The present invention relates to a belt attachment method in which a circumferentially extendable belt is looped around at least four pulleys laid out in the following order: first pulley, second pulley, third pulley, and fourth pulley. The belt attachment method comprises: a step for passing the belt through an opening and into a space on the inner circumferential side of a circumferential portion of an auxiliary jig having said opening and said circumferential portion, the space on the inner circumferential side of the circumferential portion being located on a running line of the belt between the first pulley and the second pulley; a step for attaching, to the first pulley, an attaching jig comprising a pressing portion disposed to face the outer circumference of the first pulley and a winding portion that is pressed against the first pulley by the tension of the belt; a step for passing the belt along the winding portion and between the outer circumference of the first pulley and the pressing portion, and temporarily hanging the belt on the first pulley in such a state that the inner circumferential surface of the belt is facing a lateral surface of the first pulley; and step for rotating the first pulley in a state in which the belt is looped around the second pulley, the third pulley, and the fourth pulley and in which the belt is temporarily hung on the first pulley.
F16H 7/24 - Equipment for mounting belts, ropes, or chains
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
2.
RAW EDGE COGGED V-BELT, METHOD FOR USING SAME, AND BELT TRANSMISSION MECHANISM
The present invention relates to a raw edge cogged V-belt, including: a cog at least on an inner circumferential surface side; and a compression rubber layer disposed on the inner circumferential surface side, in which the compression rubber layer includes a compression rubber layer main body and an inner surface layer covering an inner circumferential surface of the compression rubber layer main body, and a friction coefficient of a surface of the inner surface layer is higher than a friction coefficient of a surface of the compression rubber layer main body that is not covered with the inner surface layer.
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16G 5/08 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
F16H 9/18 - Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
3.
RAW EDGE COGGED V-BELT, METHOD FOR USING SAME, AND BELT DRIVE MECHANISM
The present invention relates to a raw edge cogged V-belt that has a cog part at which cog peaks and cog valleys are alternately aligned in the belt longitudinal direction on at least the inner circumferential side. The cog part on the inner circumferential side is formed from a compressed rubber layer and a fabric layer that covers an inner circumferential surface of the compressed rubber layer. Top parts of the cog peaks on the inner circumferential side are flat, and the length in the belt longitudinal direction of each top part is 18%–65% of the cog pitch.
The present invention relates to a coupled V-belt including a plurality of wrapped V-belt portions arranged in a belt width direction, and a tie band for connecting the wrapped V-belt portions, wherein each wrapped V-belt portion is formed of a V-belt body and a cover cloth covering at least a side surface of the V-belt body, and the tie band includes a core wire.
The present invention relates to a V-belt for transmission, said V-belt comprising a core wire which is formed from a Lang's lay cord obtained by combining and twisting a plurality of preliminarily twisted strands that contain aramid fibers, and which has a total fineness of 1000-3500 dtex.
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16H 9/18 - Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
The present invention relates to a wrapped banded V-belt including a plurality of wrapped V-belt portions in which a belt body portion is covered with an outer covering fabric, and a tie band for connecting the plurality of wrapped V-belt portions at the outer peripheral surfaces of the wrapped V-belt portions, wherein the outer peripheral surfaces of the wrapped V-belt portions each have a covered region covered with the outer covering fabric and an uncovered region that is not covered, the covering region is formed on at least one side portion of the outer peripheral surface, and the outer covering fabric that covers the covered region covers the side surfaces of the wrapped V-belt portions.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Power transmission belts for industrial machines; Power transmission belts for agricultural machines; Pulleys for power transmission belts for machines; Belt pulleys. Power transmission belts for land vehicles; Pulleys for power transmission belts for land vehicles; Belt pulleys for land vehicles.
10.
RUBBER COMPOSITION FOR TRANSMISSION BELT AND TRANSMISSION BELT
The present invention pertains to a rubber composition for a transmission belt, the rubber composition comprising: a polymer component including an ethylene-α-olefin elastomer; carbon black; and clay. The Mooney viscosity of the ethylene-α-olefin elastomer at 125° C. is 25 ML(1+4)@125° C. or less, and the pH of the clay is 5.5 or higher. The total amount of the carbon black and the clay is 80-180 parts by mass per 100 parts by mass of the polymer component, and the mass ratio of the clay to the carbon black is clay/carbon black=0.2/1 to 1.2/1.
An auto-tensioner includes: a base having a cylindrical part; an arm; a pulley around which a belt is to be wound; a friction member sandwiched between an inner circumferential surface of a cylindrical part and the arm; and a coil spring pressing the friction member against the arm in the axial direction and rotationally biasing the arm in one direction with respect to the base, in which the friction member includes: an arcuate surface, a first locking part, locked to the arm, and inclined with respect to the radial direction so as to face the one direction side as the first locking part goes toward an outside in the radial direction, and a second locking part, and the friction member and the arm include a restricting unit which restricts the friction member from moving toward the one direction side with respect to the arm.
The present invention pertains to a belt transmission mechanism comprising: a drive pulley which is fixed to a drive shaft driven by a drive source so as to be rotatable forward and backward; a driven pulley which is supported rotatably; a toothed belt which is wound around the drive pulley and the driven pulley; and an auto tensioner which automatically and moderately maintains the tension of the toothed belt through two tension rollers that are provided rotatably about respective base shaft parts at positions on both sides of a pulley center line connecting the center of rotation of the drive pulley and the center of rotation of the driven pulley, and that are in contact with the toothed belt. The belt transmission mechanism is characterized in that: the auto tensioner has a swing shaft provided so as to extend in the direction parallel to the drive shaft, through a point which is separated from an intersection point between the pulley center line and a roller center line connecting the rotation centers of the two tension rollers and which is on the pulley center line or a point on an extension line of the pulley center line, and has a spring for biasing the two tension rollers in a direction of being pulled to each other or in a direction of being separated from each other; and the two tension rollers are configured to swing freely about the swing shaft. The belt transmission mechanism is also characterized: by further comprising a regulation means for regulating the swings of the two tension rollers; and in that the regulation means is positioned to regulate the swinging of the two tension rollers about the swing shaft in a direction reverse to the biasing direction of the spring from the balanced position in which the driving pulley and the driven pulley are in a suspended state.
A calculation control method for a predicted value of a jumping torque Tq of a toothed belt configured to be wound around a layout including a driving pulley and a driven pulley, includes: (1a) causing, by a control device, a storage device to store values of parameters, and a value of a teeth in mesh correction factor Kmn and a value of an overall correction factor K; (1b) substituting, by the control device, the values of the parameters, the value of the overall correction factor K, and the value of the teeth in mesh correction factor Kmn stored in (1a) into Equations (1) to (3) to calculate the predicted value of the jumping torque Tq; and (1c) outputting, by the control device, the predicted value of the jumping torque Tq calculated in (1b).
G01M 13/023 - Power-transmitting endless elements, e.g. belts or chains
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
The present invention relates to a toothed belt, including: a back portion including a tension member; a plurality of tooth portions; a back rubber layer; and a first rubber layer and a second rubber layer that are formed on a belt inner circumferential side with respect to the tension member, in which an elastic modulus of the first rubber layer is larger than that of the second rubber layer, the first rubber layer includes a first crosslinked rubber composition including a first rubber component and a first short fiber, a proportion of the first short fiber is 5 parts by mass to 60 parts by mass with respect to 100 parts by mass of the first rubber component, the first short fiber is oriented in a belt longitudinal direction along a contour of the tooth portion.
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
B32B 3/08 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
B32B 3/28 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer comprising a deformed thin sheet, e.g. corrugated, crumpled
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 25/02 - Layered products essentially comprising natural or synthetic rubber with fibres or particles embedded in it or bonded with it
B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/14 - Layered products essentially comprising natural or synthetic rubber comprising copolymers in which synthetic rubber constituents predominate
The disclosure relates to a toothed belt including: a back portion in which a tension member is embedded; a plurality of tooth portions formed on an inner circumferential surface of the back portion; a back rubber layer formed on a belt outer circumference side with respect to the tension member; and a first rubber layer and a second rubber layer formed on a belt inner circumferential side with respect to the tension member, in which an inner circumferential belt surface is formed of a tooth fabric, the back portion includes the back rubber layer, an elastic modulus of the first rubber layer is larger than an elastic modulus of the second rubber layer, and the tooth portion includes the tooth fabric, the first rubber layer formed along the tooth fabric, and the second rubber layer interposed between the first rubber layer and the tension member.
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
B32B 3/08 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
B32B 3/28 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer comprising a deformed thin sheet, e.g. corrugated, crumpled
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 25/02 - Layered products essentially comprising natural or synthetic rubber with fibres or particles embedded in it or bonded with it
B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/14 - Layered products essentially comprising natural or synthetic rubber comprising copolymers in which synthetic rubber constituents predominate
The present invention relates to an idler pulley comprising: a pulley including an outer cylinder part, a boss part located concentrically inside the outer cylinder part, and a connection part that connects a widthwise center portion of the outer cylinder part and a widthwise center portion of the boss part together; a base serving as a rotation axis of the pulley; a bearing located between the pulley and the base; and a pair of dust covers provided on both side surfaces of the bearing. The dust covers cover the both side surfaces of the bearing, and the outside and widthwise end portions of the boss part. The boss part has a recessed annular groove on an outer peripheral surface.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
The present invention pertains to a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and a second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire. The back portion includes the back rubber layer. The elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer. The first rubber layer is formed from a first cross-linked rubber composition including a first rubber component and first short fibers. The proportion of the first short fibers is 5-60 parts by mass with respect to 100 parts by mass of the first rubber component. The first short fibers are aligned in the belt longitudinal direction along the contour of the tooth portions, the core wire includes high elastic modulus fibers, and the tooth portions include the first rubber layer and the second rubber layer which is interposed between the first rubber layer and the core wire.
A toothed belt includes: a back portion; at least one tension member embedded in the back portion; tooth portions arranged at a predetermined interval along a belt longitudinal direction on one surface of the back portion; and a tooth cloth covering a surface of the tooth portion and a part of the one surface of the back portion, in which the at least one tension member is a twisted cord including a high-strength glass fiber filament, a tooth pitch, a diameter of the at least one tension member, and a ratio of a thickness of the back portion to a thickness of the toothed belt are in a specific range, the tooth portion is constituted of a rubber composition, a hardness of the rubber composition at 23° C. is 73° or more and 83° or less, and the tooth portion has a specific shape.
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
The present invention relates to a toothed belt including: a back portion; a tension member embedded in the back portion in a belt longitudinal direction and including a twisted cord including a steel fiber; a plurality of belt teeth formed on an inner peripheral side of the back portion along the belt longitudinal direction; and a cover layer provided between the tension member and a belt tooth bottom formed between the belt teeth, in which the cover layer has a thickness in a range of 0.2 mm to 1.0 mm, and the back portion, the belt teeth, and the cover layer are integrally formed of a thermoplastic elastomer.
A toothed belt including a reinforcing layer with 0.05 mm to 0.2 mm thickness buried along a contour of tooth portions such that a maximum height from a bottom portion of the tooth portion to the reinforcing layer is in a range of 30% to 100% of a height from the bottom portion to a tooth tip, in which the reinforcing layer includes reinforcing fiber filaments arranged in a belt circumferential direction, in the reinforcing layer, a weight per unit area of fibers intersecting the belt circumferential direction is 30% or less of a weight per unit area of the reinforcing fiber filaments, the reinforcing layer has a structure where the reinforcing fiber filaments are arranged in the belt circumferential direction and bonded to form a sheet shape in an untwisted state, and a tensile modulus of the reinforcing fiber filament satisfies a specific condition.
The present invention relates to a joined V-belt comprising a plurality of wrapped V-belt portions and a tie band. The outer peripheral surfaces of the wrapped V-belt portions are coupled by the tie band. The wrapped V-belt portions each include a belt body and an outer fabric cover covering the outer surface of the belt body. The belt body includes a core body layer, an extension rubber layer, and a compression rubber layer. The tie band includes a short fiber–containing rubber layer, and the short fiber–containing rubber layer has a plurality of rib portions.
The present invention pertains to a rubber composition used for a compressed rubber layer of a transmission belt, the rubber composition comprising a chloroprene rubber, a short fiber, an adhesiveness improver, and carbon black, wherein: the short fiber includes an aramid short fiber; and, with respect to 100 parts by mass of the chloroprene rubber, the proportion of the short fiber is 15-38 parts by mass, the proportion of the aramid short fiber is 5-28 parts by mass, the proportion of the adhesiveness improver is 0.1-3.2 parts by mass, and the proportion of the carbon black is 30-70 parts by mass.
The present invention relates to a raw edge cogged V-belt having cogs at least on an inner circumferential surface side, and including a compressed rubber layer disposed on the inner circumferential surface side. The compressed rubber layer comprises a compressed rubber layer body, and an inner surface layer covering an inner circumferential surface of the compressed rubber layer body. A surface friction coefficient of the inner surface layer is higher than a surface friction coefficient of the compressed rubber layer body that is not covered with the inner surface layer.
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16H 9/18 - Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
28.
BELT MECHANISM PROVIDED IN BICYCLE CONTINUOUSLY VARIABLE TRANSMISSION
The present invention relates to a belt mechanism provided in a bicycle continuously variable transmission including a drive pulley and a driven pulley each configured from a pair of sheaves that can be moved toward and away from one another in the direction of an axis of rotation, and a V-belt wound between the drive pulley and the driven pulley, wherein an LT coefficient of the V-belt with respect to the drive pulley lies in a range of 8 to 12 in a usage condition in which torque is maximized with the continuously variable transmission shifted to a lowest speed side, and the V-belt has a belt transverse stiffness in a range of 1500 to 2500 N/mm in a ride-out change measurement test.
B62M 9/08 - Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically-mounted or elliptically-shaped driving or driven wheelTransmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like with expansible driving or driven wheel
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16H 9/16 - Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
29.
Frictional Transmission Belt and Production Method Therefor
A frictional power transmission belt includes a compression rubber layer having a frictional power transmission surface that is covered with a fabric. The compression rubber layer includes an inner rubber layer in contact with the fabric and an outer rubber layer on an outer peripheral side of the inner rubber layer. The inner rubber layer is formed of a cured product of a rubber composition including a surfactant as a hydrophilic plasticizer, an unsaturated carboxylic acid metal salt, and polyolefin particles.
The present invention relates to a belt transmission mechanism characterized by comprising: a drive pulley fixed to a drive shaft that is driven by a drive source so as to be rotatable forward and backward; a driven pulley that is rotatably supported; a toothed belt wound around the drive pulley and the driven pulley; and an auto tensioner that automatically maintains appropriate tension of the toothed belt through two tension rollers that are mounted rotatably around base shafts thereof at positions on both sides of a pulley center line connecting the center of rotation of the drive pulley and the center of rotation of the driven pulley, and that contact the toothed belt. The auto tensioner has a swing shaft mounted to extend in a direction parallel to the drive shaft through a point on the pulley center line or a point on an extension line of the pulley center line, and comprises a spring that is stretched between the base shafts of the two tension rollers, and biases the two tension rollers in directions toward or away from each other, along the roller center line. The two tension rollers are configured to be swingable about the swing shaft.
B25J 19/00 - Accessories fitted to manipulators, e.g. for monitoring, for viewingSafety devices combined with or specially adapted for use in connection with manipulators
31.
RUBBER COMPOSITION FOR TRANSMISSION BELT AND TRANSMISSION BELT
The present invention pertains to a rubber composition for a transmission belt, the rubber composition comprising: a polymer component including an ethylene-α-olefin elastomer; carbon black; and clay. The Mooney viscosity of the ethylene-α-olefin elastomer at 125°C is 25 ML(1+4) @ 125°C or less, and the pH of the clay is 5.5 or higher. The total amount of the carbon black and the clay is 80-180 parts by mass per 100 parts by mass of the polymer component, and the mass ratio of the clay to the carbon black is clay/carbon black = 0.2/1 to 1.2/1.
This automatic tensioner comprises: a base having an outer cylinder part; an arm; a pulley around which a transmission belt is wound; a friction member interposed between the inner circumferential surface of the outer cylinder part and the arm; and a coil spring that presses the friction member in the axial direction to the arm and turnably urges the arm in the X direction to the base, wherein the friction member includes a locking surface positioned more on the X-direction side than an arc surface, being locked to the arm, and inclining so as to be more directed toward the X direction the more directed toward the radially outside the locking surface is, and a retaining groove locked to one end of the coil spring, and wherein the friction member and the arm have a restricting means where recesses/protrusions formed on the locking surface of the friction member and recesses/protrusions formed on the locking surface of a protrusion of the arm engage with each other.
A toothed belt power-transmission apparatus includes: a toothed belt which includes a cord and a plurality of belt tooth portions; and a plurality of toothed pulleys which include a plurality of pulley tooth portions. The cord includes a carbon fiber cord formed by combining and secondarily twisting a plurality of primary twisted yarns including a carbon fiber. A twisting direction of a primary twist of the primary twisted yarns is the same as a twisting direction of the secondary twist. A primary twisting coefficient of the primary twist is 0.62 to 1.30. A secondary twisting coefficient of the secondary twist is 2.06 to 3.95. A tooth pitch of the toothed belt is within a range of −0.4% to +0.1% relative to a tooth pitch of the toothed pulley around which the toothed belt is wound.
The present invention pertains to a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and a second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire. The back portion includes the back rubber layer. The elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer. The first rubber layer is formed from a first cross-linked rubber composition including a first rubber component and first short fibers, the proportion of the first short fibers is 5-60 parts by mass with respect to 100 parts by mass of the first rubber component. The first short fibers are aligned in the belt longitudinal direction along the contour of the tooth portions, and the tooth portions include the first rubber layer and the second rubber layer which is interposed between the first rubber layer and the core wire.
A core wire for a power-transmission belt includes a plied twisted cord formed by putting together and secondary twisting a plurality of primary twisted yarns. The primary twisted yarns include a plurality of hard primary twisted yarns (A) and one soft primary twisted yarn (B). The hard primary twisted yarns (A) include an aramid fiber, and a fineness of each hard primary twisted yarn (A) is 1500 dtex or less. The soft primary twisted yarn (B) includes a low elastic modulus fiber. A ratio (B/A) of a primary twist coefficient of the soft primary twisted yarn (B) to an average value of primary twist coefficients of the hard primary twisted yarns (A) is 0.5 to 1.2.
The present invention is a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire, the belt inner circumferential surface being configured from a tooth cloth, wherein the back portion includes the back rubber layer, the elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer, and the tooth portions include the tooth cloth, the first rubber layer, which is formed along the tooth cloth, and the second rubber layer, which is interposed between the first rubber layer and the core wire.
The present invention relates to a cogged V-belt, including a cog portion containing cog ridges and cog valleys, and having a belt thickness of 19 to 36 mm and a cog height of 14 to 19 mm, in which the cog valley has a cross-sectional shape including a bottom portion formed by combining a plurality of continuous arcs and side walls of the cog valley, in which the plurality of arcs has curvature radius decreasing as a distance from a deepest portion of the cog valley increases, and includes a first arc passing through the deepest portion of the cog valley, having a diameter larger than a virtual circle tangent to the deepest portion and the both side walls and having a curvature radius of 7 to 10 mm.
00), a tight-side span length (Lt), a slack-side span length (Ls), a wrap angle (θr), and a wrap angle (θn), into an expression (1)- an expression (3) and an actually measured value of the jumping torque (Tq) to each other; storing, in a storage unit (12), the value of an overall correction coefficient (K) and the value of a mesh correction coefficient (Kmn) of a driven pulley, each of which is determined in advance as a value that minimizes the average value of the difference between the compared values; and substituting the stored various parameter values, the value of the overall correction coefficient (K), and the value of the mesh correction coefficient (Kmn) into the expression (1)- the expression (3) to calculate the jumping torque (Tq) of the toothed belt (1) wound around a driving pulley (DR) and the driven pulley (DN).
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
A rubber composition includes an elastomer component, a polyvinyl pyrrolidone-based resin, and a non-water-absorbent short fiber, and includes substantially no water-absorbent fiber. The elastomer component may include an ethylene-α-olefin elastomer. The polyvinyl pyrrolidone-based resin may have a K value of 10 to 100. The non-water-absorbent short fiber may include an aliphatic polyamide short fiber.
This toothed belt comprises: a back portion; a core strand embedded in the back portion; a plurality of tooth portions arranged at a predetermined interval along the belt longitudinal direction on one surface of the back portion; and a tooth cloth that covers the surface of the tooth portion and part of the one surface of the back portion. The core strand is a twisted cord containing high-strength glass fiber filaments. The tooth pitch PT between the tooth portions is 2.0-2.5 mm inclusive. The core strand has a diameter D of 0.15 mm or more and less than 0.30 mm. The ratio of the thickness of the back portion to the thickness of the toothed belt is 22.0-38.5% inclusive. The tooth portion is made from a rubber composition. The rubber composition has a hardness of 73-83° inclusive at 23°C. The tooth portion has a shape in which a tooth tip portion and two side surfaces sandwiching the tooth tip portion in the belt longitudinal direction are joined together with one or more of curved surfaces having a fixed curvature.
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
A frictional power transmission belt includes a compression rubber layer that includes a frictional power transmission surface at least a part of which can come into contact with a pulley and that is formed of a cured product of a rubber composition. On a surface of the frictional power transmission surface, a surface layer comprising a cured product of a rubber composition containing a polyvinyl pyrrolidone-based resin and an elastomer component is laminated.
The present invention relates to a toothed belt characterized by comprising a back portion, a core wire embedded in the back portion in a belt longitudinal direction and composed of a stranded cord containing steel fibers, a plurality of belt teeth formed on an inner peripheral side of the back portion along the belt longitudinal direction, and a cover layer provided between a belt tooth bottom portion formed between the belt teeth and the core wire, wherein the cover layer has a thickness within a range from 0.2 to 1.0 mm, and the back portion, the belt teeth, and the cover layer are integrally formed of a thermoplastic elastomer.
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
F16H 19/02 - Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary motion and reciprocating motion
43.
Transmission belt core wire production method, transmission belt production method, processing agent and processing kit
The present invention relates to a method of producing a cord for a power transmission belt, the method including: a first treatment step of treating an untreated yarn of a cord for a power transmission belt with a first treatment agent including a resin component (A) to obtain a first treated yarn; and a second treatment step of treating the first treated yarn with a second treatment agent including a condensate (B1) of resorcin and formaldehyde, an unmodified latex (B2), and an acid-modified diene-based polymer (B3) to obtain a second treated yarn.
C09D 123/16 - Ethene-propene or ethene-propene-diene copolymers
D06M 15/227 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
D07B 5/00 - Making ropes or cables from special materials or of particular form
F16G 1/10 - Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
F16G 5/08 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
The present invention relates to a transmission V-belt including a cured product of a first rubber composition, wherein: the first rubber composition comprises a polymer component (A) including an ethylene-α-olefin elastomer, a crosslinking agent (B) including a sulfur-based crosslinking agent, and a staple fiber (C); the staple fiber (C) is oriented in the belt width direction; the rubber hardness (JIS-A) of the cured product is at least 91 degrees; and the breaking elongation of the cured product in the belt longitudinal direction is at least 100%.
The present invention relates to a twisted cord for constituting a core wire of a power-transmission belt, the twisted cord including a plurality of primary twisted yarns that are bundled and secondarily-twisted, in which when secondary twist is untwisted by 25 cm, a difference in length between the longest primary twisted yarn L and the shortest primary twisted yarn S among the plurality of primary twisted yarns is 1 to 10 mm.
B29K 105/10 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns oriented
A toothed belt that has: tooth sections arranged at a prescribed interval in the belt circumferential direction; and a reinforcement layer embedded along the contours of the tooth sections. The reinforcement layer is embedded in the tooth sections such that the maximum height from the bottom of the tooth sections to the reinforcement layer is within the range of 30%–100% of the height from the bottom of the tooth sections to the tip of the tooth sections. The reinforcement layer includes a plurality of reinforcing fiber filaments arranged in the belt circumferential direction. In the reinforcement layer, the weight, per unit area, of the fibers intersecting in the belt circumferential direction is no more than 30% of the weight, per unit area, of the reinforcing fiber filaments. The reinforcement layer has a structure in which the reinforcing fiber filaments, in an untwisted state, are bonded so as to be arranged in the belt circumferential direction and in a sheet shape. The thickness of the reinforcement layer is 0.05–0.2 mm. The toothed belt is characterized by the modulus of elasticity (GPa) of the reinforcing fiber filaments fulfilling the condition 5 ≤ [thickness of the reinforcement layer (mm)] × [modulus of elasticity (GPa) of the reinforcing fiber filaments] ≤ 60.
An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120° C. to 180° C.
A V-ribbed belt which comprises core wires and a stretch rubber layer constituted of a vulcanizate of a rubber composition comprising a rubber ingredient and short is provided. The content of the short fibers in the rubber composition is 15-50 parts by mass per 100 parts by mass of the rubber ingredient and the rubber composition has a minimum Mooney scorch viscosity, as measured at 125° C., of 70-130.
A belt includes a laminate including a back surface layer disposed on a back surface side and a tension member layer including a tension member. The belt includes a sensor provided in the laminate and configured to detect a state of the belt, and a passive RFID also provided in the laminate, including an IC chip and an antenna, and configured to transmit state information on the belt detected by the sensor to an outside.
F16G 5/08 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
F16G 1/10 - Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
G01L 1/16 - Measuring force or stress, in general using properties of piezoelectric devices
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
H01Q 1/27 - Adaptation for use in or on movable bodies
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
A V-ribbed belt includes a compression rubber layer having a frictional power transmission surface that is covered with a fabric. The compression rubber layer includes an inner rubber layer in contact with the fabric and an outer rubber layer on an outer side of the inner rubber layer. The inner rubber layer is formed of a rubber composition having a Mooney Scorch minimum viscosity of 50 to 110 when measured at 125° C., and the outer rubber layer is formed of a rubber composition having a Mooney Scorch minimum viscosity of 70 to 130 when measured at 125° C.
The present invention relates to a power-transmitting friction belt having a compressed layer and a knitted fabric. The surface of the compressed layer is covered with the knitted fabric. The knitted fabric has an overlapping section in which one end and the other end of the knitted fabric overlap each other. The overlapping section has a bonding region containing a bonding component for bonding the end and the other end of the knitted fabric together.
A rubber toothed belt includes a belt main body including a plurality of tooth portions provided at predetermined intervals along a longitudinal direction of the belt and including a first rubber composition, in which the first rubber composition includes a composite polymer including a hydrogenated nitrile rubber and an unsaturated carboxylic acid metal salt in a mass ratio of the former/the later=100/80 to 100/180, and includes, with respect to 100 parts by mass of the composite polymer, 3 parts by mass to 50 parts by mass of a zinc oxide, 3 parts by mass to 50 parts by mass of a non-reinforcing filler, 10 parts by mass or less of a reinforcing filler, 5 parts by mass or less of short fibers, and 1 part by mass to 5 parts by mass of an organic peroxide.
In the present invention, a filled-via substrate in which conductive vias have high density and in which there is high airtightness and adhesion between the conductive vias and hole portions is easily produced. A filled-via substrate is produced through: a filling step for filling, into a hole portion of an insulating substrate, a first conductive via precursor which contains a filling conductive paste containing a first organic vehicle and a metal component A that is high melting point metal particles having a melting point higher than the firing temperature thereof; a lamination step for laminating, onto the first conductive via precursor filled into the hole portion in the filling step, a lamination conductive paste containing a second organic vehicle and a metal component B that is melt-resistant metal particles having a lower melting point than the firing temperature thereof; and a firing step for firing, in a nitrogen atmosphere, the insulating substrate including both precursors as obtained in the lamination step. The filling step includes a paste filling step for filling the filling conductive paste. At least one of the first conductive via precursor and a second conductive via precursor contains an active metal component containing an active metal. At least one of the filling conductive paste and the second conductive via precursor contains a metal component C having a melting point lower than that of the melt-resistant metal particles.
The present invention pertains to a toothed belt transmission device provided with: a toothed belt having a core wire that extends in a belt longitudinal direction to be embedded and a plurality of belt tooth parts that are disposed at a predetermined interval in the belt longitudinal direction; and a plurality of toothed pulleys which have a plurality of pulley tooth parts facing the belt tooth parts at an outer periphery and on which the toothed belt is wound. The core wire includes a carbon fiber cord obtained by performing over-twining of a plurality of sub-twining yarns including carbon fibers. The twining direction of the sub-twining of the sub-twining yarns is identical to the twining direction of the over-twining. A sub-twining coefficient of the sub-twining is 0.62-1.30. An over-twining coefficient of the over-twining is 2.06-3.95. The tooth pitch of the toothed belt is in a range of -0.4% to +0.1% with respect to the tooth pitch of the toothed pulleys on which the toothed belt is wound.
D02G 3/16 - Yarns or threads made from mineral substances
D02G 3/26 - Yarns or threads characterised by constructional features with characteristics dependent on the amount or direction of twist
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
55.
Friction transmission belt and production method therefor
The frictional power transmission belt includes a frictional power transmission surface formed of a composite fibrous layer containing a fibrous member, an isocyanate compound, and a resin component, wherein the fibrous member contains a cellulose-based fiber. A proportion of each of the isocyanate compound and the resin component in the composite fibrous layer may be 2 to 15% by mass.
D01F 8/02 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from cellulose, cellulose derivatives, or proteins
D01F 8/04 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers
D06M 15/564 - Polyureas, polyurethanes or other polymers having ureide or urethane linksPrecondensation products forming them
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
The present invention pertains to an auxiliary tool for fixing, on a pulley, a belt installation jig that is used when winding and suspending a belt extendable and contractible in the circumferential length direction between a plurality of pulleys. The auxiliary tool is formed in an end-including shape that has a ring-like portion extendable and contractible in a radial direction. The outer diameter of the ring-like portion in a state of having no external force being exerted thereon is greater than the inner diameter of a bottomed cylindrical recess part formed in a lateral surface of the pulley. The ring-like portion, in a state of being contracted in the radial direction and being in abutment with the bottom of the recess part, is configured to be capable of pressing an inner wall of the recess part and is configured to be capable having the belt installation jig installed at one end thereof.
In a V-ribbed belt provided with a compressed rubber layer having V-ribbed portions extending parallel to one another in a belt longitudinal direction, and having a friction transmission surface at least a portion of which is capable of coming into contact with a V-ribbed groove portion of a pulley, the friction transmission surface of the compressed rubber layer is formed from a rubber composition vulcanizate including a rubber component and a sound generation resistance improving agent. A difference between a radius of curvature of a rib distal end portion of the pulley and a radius of curvature of a rib bottom portion of the belt is adjusted to be −0.08-0.08 mm. The radius of curvature of the rib bottom portion may be approximately 0.1-0.5 mm. The radius of curvature difference may be −0.05-0.05 mm. The pulley may include a pulley having an outer diameter at most equal to 65 mm.
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
58.
Core wire for friction transmission belts, friction transmission belt, and manufacturing methods therefor
The present invention relates to a core wire for a frictional power-transmission belt, the core wire including a Lang lay cord, having a total fineness of 300 to 1000 tex, and including a rubber component adhered to at least a part of a surface of the core wire, in which the Lang lay cord comprises a first-twisted yarn, and in which the first-twisted yarn comprises a carbon fiber.
The present invention pertains to a core wire for a drive belt, the core wire including twisted cords in which a plurality of first-twisted threads are doubled and final-twisted, each first-twisted thread including a plurality of hard first-twisted threads (A) and one soft first-twisted thread (B), the hard first-twisted threads (A) including aramid fibers, and the fineness of each hard first-twisted thread (A) being 1500 dtex or less, the soft first-twisted thread (B) including low-elasticity fibers, and the ratio (B/A) of the first-twist coefficient of the soft first-twisted thread (B) to the average value of the first-twist coefficient of the hard first-twisted threads (A) is 0.5-1.2.
The present invention relates to a wrapped V-belt including: a tension member layer including a tension member; a tension rubber layer laminated on the tension member layer at a belt outer peripheral side; a compression rubber layer laminated on the tension member layer at a belt inner peripheral side; and an outside cloth covering an entire outer surface of the belt, in which the compression rubber layer includes a first compression rubber layer laminated at the belt outer peripheral side and a second compression rubber layer laminated at the belt inner peripheral side, and the tension rubber layer has a rubber hardness that is higher than a rubber hardness of the second compression rubber layer and lower than a rubber hardness of the first compression rubber layer.
A pulley structure includes: a cylindrical outer rotation body; an inner rotation body; and a torsion coil spring. The torsion coil spring includes: one end region which is in contact with one rotation body; the other end region which is in contact with the other rotation body; and a middle region. The other rotation body includes: a first contact surface; a facing surface; an inclined surface; and a second contact surface. The facing surface includes a constraining surface connected to the inclined surface. The constraining surface is configured to be capable of constraining the other end region of the torsion coil spring before press fitting so as to prevent a displacement of an axis of the torsion coil spring before the press fitting with respect to an axis of the other rotation body.
F16D 41/20 - Freewheels or freewheel clutches with expandable or contractable clamping ring or band
F16D 7/02 - Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
F16F 1/06 - Wound springs with turns lying in cylindrical surfaces
F16F 15/121 - Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
The present invention relates to a V-ribbed belt that has a medium elongation of 0.8% or more when the load of 4 cN/dtex is applied, and that contains a twisted cord in which a high-elongation aramid fiber having a tensile modulus of 50-100 GPa and a low-modulus fiber having a lower tensile modulus than the high-elongation aramid fiber are blended and twisted.
D02G 3/04 - Blended or other yarns or threads containing components made from different materials
D02G 1/18 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics by combining fibres, filaments, or yarns, having different shrinkage characteristics
F16G 5/08 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
B29D 29/10 - Driving belts having wedge-shaped cross-section
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
D02G 3/44 - Yarns or threads characterised by the purpose for which they are designed
63.
Pulley structure, sliding bearing, and production method for sliding bearing
A pulley structure includes a cylindrical outer rotation body, an inner rotation body, and a pair of bearings which is disposed between the outer rotation body and the inner rotation body. Of the pair of bearings, one bearing is a sliding bearing, and the other bearing is a rolling bearing. The sliding bearing is made of a thermoplastic resin and is formed into an ended ring shape. A thickness of the sliding bearing at each of both circumferential end portions is smaller than a reference dimension of a thickness of the sliding bearing.
A power transmission belt includes a stacked body including a back surface layer disposed on a back surface side, an inner surface layer disposed on an inner surface side, and a tension member layer containing a tension member embedded between the back surface layer and the inner surface layer, in which the power transmission belt includes a sensor configured to detect a status of the power transmission belt, as at least a part of the stacked body.
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
G01L 5/101 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using sensors inserted into the flexible member
The present invention relates to a wrapped joined V-belt in which outer peripheral surfaces of a plurality of wrapped V-belt portions are coupled via a tie band, each of the wrapped V-belt portions includes a tension member layer, a tension rubber layer laminated at a belt outer peripheral side, a compression rubber layer laminated at a belt inner peripheral side, and an outside cloth covering an entire outer surface of the belt, and the compression rubber layer includes a first compression rubber layer laminated at the belt outer peripheral side and a second compression rubber layer laminated at the belt inner peripheral side, a rubber hardness of the tension rubber layer is higher than that of the second compression rubber layer, and a rubber hardness of the first compression rubber layer is equal to or higher than that of the tension rubber layer.
F16G 5/08 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
C08L 11/00 - Compositions of homopolymers or copolymers of chloroprene
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16G 5/22 - V-belts, i.e. belts of tapered cross-section built-up from superimposed layers
67.
FRICTION TRANSMISSION BELT AND PRODUCTION METHOD THEREFOR
The present invention pertains to a friction transmission belt provided with a compression rubber layer in which a friction transmission surface thereof is coated with a fabric. The compression rubber layer has an inner circumference rubber layer in contact with the fabric and an outer circumference rubber layer located on the outer circumference side of the inner circumference rubber layer. The inner circumference rubber layer is formed of a cured product of a rubber composition containing a surfactant serving as a hydrophilic plasticizing agent, an unsaturated carboxylic acid metal salt, and polyolefin particles.
A pulley structure may be equipped with an outer rotating body, an inner rotating body, and a coil spring provided between the outer rotating body and the inner rotating body. The coil spring is configured so as to undergo torsional deformation in a diameter-expanding or a diameter-contracting direction, thereby engaging the outer rotating body and the inner rotating body and transmitting torque, and to undergo torsional deformation in the direction opposite the direction in which torque is transmitted, thereby entering a disengaged state in which the coil spring slides with the outer rotating body or the inner rotating body, thus interrupting the transmission of torque. The number of windings of the coil spring is in a range between [M-0.125] and M (both inclusive), where M is a natural number.
F02B 67/06 - Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functionsDriving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
F16D 41/20 - Freewheels or freewheel clutches with expandable or contractable clamping ring or band
F16D 7/02 - Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
F16D 13/08 - Friction clutches with a helical band or equivalent member, which may be built-up from linked parts, with more than one turn embracing a drum or the like, with or without an additional clutch actuating the end of the band
F16D 13/12 - Friction clutches with an expansible band or coil co-operating with the inner surface of a drum or the like
F16D 13/14 - Friction clutches with outwardly-movable clutching members co-operating with the inner surface of a drum or the like
F02B 63/04 - Adaptations of engines for driving pumps, hand-held tools or electric generatorsPortable combinations of engines with engine-driven devices for electric generators
F16F 1/06 - Wound springs with turns lying in cylindrical surfaces
F16F 15/121 - Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
69.
Transmission V-belt and manufacturing method therefor
Provided is a power transmission V-belt containing: a rubber layer; a cord buried in the rubber layer along the belt circumferential direction; and at least one reinforcing layer buried in the rubber layer, in which the reinforcing layer contains reinforcing fiber filaments having the same length as a belt width; and contains no fibers intersecting with the belt width direction, or contains the fibers intersecting with the belt width direction in a weight per unit area of 30% or less of the reinforcing fiber filaments, in which the reinforcing layer has a structure in which the reinforcing fiber filaments are in a non-twisted state, are oriented in the belt width direction, and are spread and bonded in a sheet shape, and in which the reinforcing layer has a thickness of 0.05 mm to 0.5 mm.
The present invention relates to a rubber composition which contains an elastomer component, a polyvinylpyrrolidone-based resin, and non-water-absorbing short fibers, and which contains substantially no water-absorbing fibers. The elastomer component may contain an ethylene-α-olefin elastomer. The polyvinylpyrrolidone-based resin may have a K value of 10-100.
C08L 39/06 - Homopolymers or copolymers of N-vinyl-pyrrolidones
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
The present invention relates to a friction transmission belt that includes a compression rubber layer formed of a cured product of a rubber composition and that has a friction transmission face at least partially contactable with a pulley, wherein, on the surface of the friction transmission face, a surface layer comprising the cured product of the rubber composition that contains an elastomer component and a polyvinylpyrrolidone-based resin is laminated.
The present invention relates to a transmission belt core wire production method comprising a first processing step of processing an unprocessed string for a transmission belt core wire with a first processing agent containing a resin component (A) to obtain a first processed string, and a second processing step of processing the first processed string with a second processing agent containing a condensate (B1) of resorcinol and formaldehyde, non-modified latex (B2), and an acid-modified diene-based polymer (B3), to obtain a second processed string.
D06M 15/227 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
The present invention relates to a helical toothed belt including: a back portion; a tension member buried in the back portion; and a plurality of tooth portions arranged at a predetermined interval along a belt longitudinal direction on one surface of the back portion, in which the plurality of tooth portions have a tooth pitch of 1.5 mm or more and less than 2.0 mm, the back portion has a thickness of 0.4 mm or more and 1.2 mm or less, the tension member is formed of a twisted cord containing a high-strength glass fiber or a carbon fiber, and the ratio of the total value of an interval between the tension members adjacent to each other to the belt width is 20% or more and 60% or less.
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
D03D 1/00 - Woven fabrics designed to make specified articles
D03D 15/283 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
F16G 1/04 - Driving-belts made of fibrous material, e.g. textiles, whether rubber-covered or not
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 1/10 - Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
A V-ribbed belt in which a friction transmission surface of a compression rubber layer is coated with a knit fabric is provided. The compression rubber layer is formed of the cured product of a rubber composition containing an ethylene-α-olefin elastomer and carbon black wherein the carbon black contains a soft carbon having a primary particle diameter of at least 40 nm and a hard carbon having a primary particle diameter of less than 40 nm. The ratio between the number of particles of the soft carbon and hard carbon is former/latter=3/97 to 25/75.
F16G 1/21 - Driving-belts built-up from superimposed layers, e.g. zig-zag folded
B32B 1/00 - Layered products having a non-planar shape
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 25/02 - Layered products essentially comprising natural or synthetic rubber with fibres or particles embedded in it or bonded with it
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/14 - Layered products essentially comprising natural or synthetic rubber comprising copolymers in which synthetic rubber constituents predominate
A power transmission V-belt includes a tension member, an adhesion rubber layer in which at least part of the tension member is embedded, and a tension rubber layer and a compression rubber layer stacked via the adhesion rubber layer. A rubber hardness of the tension rubber layer is smaller than a rubber hardness of the compression rubber layer. In the adhesion rubber layer, a rubber hardness on a tension rubber layer side relative to the tension member is smaller than a rubber hardness on a compression rubber layer side.
B32B 25/14 - Layered products essentially comprising natural or synthetic rubber comprising copolymers in which synthetic rubber constituents predominate
B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
F16G 5/22 - V-belts, i.e. belts of tapered cross-section built-up from superimposed layers
The present invention pertains to a friction transmission belt that includes a core cable. The core cable includes a cord comprising: a core yarn containing high elastic-modulus fibers; and a plurality of sheath yarns that are disposed around the core yarn and that contain low elastic-modulus fibers. The cord is twisted and the proportion of the average diameter of the sheath yarn to the average diameter of the core yarn is 0.2 to 0.4.
A frictional power-transmission belt having a frictional power-transmission surface covered with a composite fiber layer, in which the composite fiber layer includes a fiber member and an isocyanate compound, and the fiber member includes a cellulose-based fiber. In the frictional power-transmission belt, the isocyanate compound may have a proportion of 3 to 20 mass % in the composite fiber layer.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B29D 29/10 - Driving belts having wedge-shaped cross-section
B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
F16G 5/08 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
80.
TWISTED CORD FOR CORE WIRE OF TRANSMISSION BELT, MANUFACTURING METHOD AND USE OF SAME, AND TRANSMISSION BELT
The present invention relates to a twisted cord for forming a core wire of a transmission belt, the twisted cord comprising a plurality of preliminarily twisted lines that are bundled and finally twisted, wherein, when finally twisted lines are untwisted to 25 cm, a difference in length between a longest preliminarily twisted line L and a shortest preliminarily twisted line S among the plurality of preliminarily twisted lines is 1-10 mm.
The present invention relates to a V-ribbed belt which comprises core wires and a stretch rubber layer constituted of a vulcanizate of a rubber composition comprising a rubber ingredient and short fibers, wherein the content of the short fibers in the rubber composition is 15-50 parts by mass per 100 parts by mass of the rubber ingredient and the rubber composition has a minimum Mooney scorch viscosity, as measured at 125°C, of 70-130.
The present invention relates to an aqueous treatment agent, with which an untreated thread for transmission belts is treated for the preparation of a core wire, and which contains at least a first aqueous treatment agent that contains (A) an epoxy resin, (B) a polycarbonate polyol and (C) a blocked polyisocyanate.
D06M 13/473 - Compounds containing quaternary nitrogen atoms derived from heterocyclic compounds having five-membered heterocyclic rings
D06M 15/41 - Phenol-aldehyde or phenol-ketone resins
D06M 15/564 - Polyureas, polyurethanes or other polymers having ureide or urethane linksPrecondensation products forming them
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
This V-ribbed belt, which includes a compressed rubber layer, comprises a cloth that covers the friction transmission surface of the compressed rubber layer, and the compressed rubber layer comprises an inner periphery rubber layer that contacts the cloth, and an outer periphery rubber layer outside of the inner periphery rubber layer. The inner periphery rubber layer is formed from a rubber composition which, measured at 125°C, has a Mooney scorch minimum viscosity of 50-110, and the outer periphery rubber layer is formed from a rubber composition which, measured at 125°C, has a Mooney scorch minimum viscosity of 70-130.
The present invention relates to a belt comprising a layered body including a rear-surface layer disposed on a rear-surface side and a core layer having a core, wherein the belt also comprises a sensor that is provided to the layered body and that senses the state of the belt, and a passive RFID that is similarly provided to the layered body, that has an IC chip and an antenna, and that transmits the state information of the belt sensed by the sensor to an external receiver.
The present invention relates to a helical toothed belt including: a back portion in which a tension member is buried; and a plurality of tooth portions, in which: the plurality of tooth portions have a tooth pitch of 2 mm or more and less than 4 mm, in a case where the tooth pitch of the plurality of tooth portions is 2 mm or more and less than 3 mm, the back portion has a thickness of 0.4 mm or more and 1.2 mm or less, in a case where the tooth pitch of the plurality of tooth portions is 3 mm or more and less than 4 mm, the thickness of the back portion is 0.6 mm or more and 1.8 mm or less; and the tension member is a twisted cord including a high-strength glass fiber or a carbon fiber.
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
F16G 1/04 - Driving-belts made of fibrous material, e.g. textiles, whether rubber-covered or not
F16G 1/10 - Driving-belts made of rubber with reinforcement bonded by the rubber with textile reinforcement
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
The present invention relates to a belt with a protrusion, including: a belt main body including tooth portions at a predetermined tooth pitch on an inner surface of the belt in a longitudinal direction, and a cord extending in the longitudinal direction and arranged at a predetermined cord pitch in a width direction; and a protruding portion formed on a back surface of the belt main body by an integral formation, in which: the cord has a fineness of 900 to 1100 deniers, and a ratio of a total of intervals between the adjacent cords to a belt width of 12 to 45%; and the protruding portion is arranged outside the tooth portions, has a hardness of 81 to 91 degrees, and has a base width smaller than the tooth pitch.
B65G 15/32 - Belts or like endless load-carriers made of rubber or plastics
B65G 15/00 - Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
B65G 15/42 - Belts or like endless load-carriers made of rubber or plastics having ribs, ridges, or other surface projections
The present invention relates to a V-ribbed belt that includes carbon-fiber twisted cords as core wires, the V-ribbed belt having a tensile elasticity of 240-500 N/(mm·%), and the core wire diameter of the core wires being 0.6-1.2 mm. The V-ribbed belt may have a tensile strength of 620 N/mm or more per 1 mm width of the belt.
The present invention pertains to an auto tensioner (1) to be provided in an auxiliary-driving belt system, including a friction member (6) that is sandwiched between an arm (3) and an inner circumferential surface of an outer cylindrical portion (21) of a base (2) in the radial direction of the outer cylindrical portion (21) and that has an arc-shaped surface (60) locked to the arm (2) and slidable with respect to the inner circumferential surface of the outer cylindrical portion (21), in which the friction member (6) is provided so that the arc-shaped surface (60) remains at a height equal to or higher than a horizontal plane (HP) passing through a central axis (R) when sliding with respect to the inner circumferential surface of the outer cylindrical portion (21) as the arm (3) oscillates.
The present invention relates to a transmission belt which is provided with: a rubber layer that is formed from a vulcanized product of a rubber composition which contains a rubber component containing an ethylene-α-olefin elastomer, a filler containing silica, a vulcanizing agent containing a sulfur-based vulcanizing agent, and a curable resin containing an amino resin; and a fiber member that is in contact with the rubber layer.
C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
C08L 61/28 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
a) formed on the upper side of the array of the cord and having the cord buried therein, which are integrally molded with a first thermoplastic elastomer composition; and a back sheet (3) adhered to the back surface portion side of the belt main body (2) and composed of a second thermoplastic elastomer composition, in which the back sheet (3) has an uneven shape (6) in a surface on the adhesion side.
This toothed belt transmission device (1) includes a toothed belt (10) in which belt teeth (13) and belt tooth bottom parts (14) are alternately formed, and a toothed pulley (50) in which pulley teeth (53) and pulley tooth bottom parts (54) are alternately formed so as to mesh with the toothed belt (10). The tips of the belt teeth (13) come into contact with the pulley tooth bottom parts (54), but the tips of the pulley teeth (53) do not come into contact with the belt tooth bottom parts (14), and gaps (S) are provided between the tips of the pulley teeth (53) and the belt tooth bottom parts (14).
F16G 1/28 - Driving-belts with a contact surface of special shape, e.g. toothed
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
92.
POWER-TRANSMITTING FRICTION BELT AND METHOD FOR MANUFACTURING SAME
The present invention relates to a power-transmitting friction belt having a compressed layer and a knitted fabric. The surface of the compressed layer is covered with the knitted fabric. The knitted fabric has an overlapping section in which one end and the other end of the knitted fabric overlap each other. The overlapping section has a bonding region containing a bonding component for bonding the end and the other end of the knitted fabric together.
A V-ribbed belt in which a frictional power-transmission surface is formed from a weft knitted multilayer knitted fabric is provided, in which the weft knitted multilayer knitted fabric contains cellulose based natural spun yarn, polyester based composite yarn, and polyamide based yarn, and in that at least the cellulose based natural spun yarn and the polyamide based yarn are disposed in a layer on the frictional power-transmission surface side.
B32B 5/08 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments the fibres or filaments of a layer being specially arranged or being of different substances
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 37/16 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
The present invention pertains to a toothed belt that is made of rubber and comprises: a belt body including a plurality of tooth sections formed of a first rubber composition and provided at a predetermined interval in a longitudinal direction, a back section formed of a second rubber composition and integrated with the tooth sections, and core wires embedded in the back section in the longitudinal direction; and a tooth cloth covering the surfaces of the plurality of tooth sections, wherein the first rubber composition forming the tooth sections contains a composite polymer containing a hydrogenated nitrile rubber and a metal salt of an unsaturated carboxylic acid at a mass ratio (former/latter) of 100/80-100/180, and with respect to 100 parts by mass of the composite polymer, the first rubber composition contains 3-50 parts by mass of zinc oxide, 3-50 parts by mass of a non-reinforcing filler, 10 parts by mass or less of a reinforcing filler, 5 parts by mass or less of short fibers, and 1-5 parts by mass of an organic peroxide.
Provided is a toothed belt comprising: a belt body that includes a plurality of core wires; a back surface part in which the plurality of core wires are embedded; and a plurality of teeth that oppose the back surface in a belt thickness direction. The back surface part and the plurality of teeth are integrally molded using a thermoplastic elastomer. The toothed belt is characterized in that: a belt strength per 1 mm of belt width is at least 1.85 kN; a pitch of the plurality of teeth is at least 20 mm; the height of each of the plurality of teeth is at least 5 mm; and the thickness of the back surface part is at least 4 mm.
The present invention relates to a friction transmission belt which includes a friction transmission surface formed from a composite fibrous layer comprising a fibrous member, an isocyanate compound, and a resinous ingredient, wherein the fibrous member comprises cellulosic fibers. The proportions of the isocyanate compound and the resinous ingredient in the composite fibrous layer may be 2-15 mass% each. The mass ratio of the isocyanate compound to the resinous ingredient may be from 95:5 to 20:80.
The present invention pertains to a core wire for friction transmission belts that includes a Lang's lay cord, wherein the total fineness is 300-1000 tex, the core wire has a rubber component attached to at least a part of the surface of the core wire, the Lang's lay cord includes a primarily twisted yarn, and the primarily twisted yarn includes carbon fibers.
D02G 3/44 - Yarns or threads characterised by the purpose for which they are designed
B29D 29/10 - Driving belts having wedge-shaped cross-section
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 5/06 - V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
This helically toothed belt power transmitting device (1) has: a toothed belt (10) having a plurality of teeth (12) tilted relative to the width direction of the belt; a drive pulley; and a driven pulley. The width of the helically toothed belt (10) is 1 mm to 20 mm, inclusive. The core (13) of the toothed belt (10) is a twisted cord containing high-strength glass fibers or carbon fibers and has a diameter of 0.2 mm to 0.9 mm, inclusive. The compressibility of the teeth (12) of the toothed belt (10) compressed by the grooves of the drive pulley and the driven pulley is 0% to 5%, inclusive.
F16H 7/02 - Gearings for conveying rotary motion by endless flexible members with beltsGearings for conveying rotary motion by endless flexible members with V-belts
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
99.
Pulley structure and method for manufacturing pulley structure
A pulley structure may include: a tubular outer rotating body having a belt looped thereon; an inner rotating body which is disposed radially inside the outer rotating body and which is rotatable relative to the outer rotating body; and a torsional coil spring which is arranged in a spring accommodating space formed between the outer rotating body and the inner rotating body. At least in a state in which the pulley structure has not been operated even once, grease containing a rust inhibitor is applied to an opposing surface of the inner rotating body opposing an inner peripheral surface of the torsional coil spring.
F16H 57/04 - Features relating to lubrication or cooling
F02B 63/04 - Adaptations of engines for driving pumps, hand-held tools or electric generatorsPortable combinations of engines with engine-driven devices for electric generators
F02B 67/06 - Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functionsDriving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
F16C 17/02 - Sliding-contact bearings for exclusively rotary movement for radial load only
F16C 33/20 - Sliding surface consisting mainly of plastics
F16F 15/121 - Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
A frictional power transmission belt includes a tension layer forming a belt back surface, a compression rubber layer to be in contact with a pulley and frictionally engaged with the pulley, and a tension member embedded between the tension layer and the compression rubber layer along a belt length direction. The compression rubber layer has a surface to be in contact with the pulley. At least a part of the surface is coated with a fiber layer via a fiber/resin mixture layer. The fiber/resin mixture layer contains a resin component and heat-resistant fibers having a softening point or a melting point higher than a vulcanization temperature of a rubber forming the compression rubber layer. The fiber layer contains hydrophilic heat-resistant fibers having a softening point or a melting point higher than the vulcanization temperature and does not contain a resin component.
B32B 23/02 - Layered products essentially comprising cellulosic plastic substances in the form of fibres or filaments
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
F16G 1/08 - Driving-belts made of rubber with reinforcement bonded by the rubber
F16G 5/20 - V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
