In a fluid pressure cylinder, first and second cylinder chambers facing respective opposite end surfaces of a piston are formed inside a cylinder tube including a supply port and a discharge port, and a first piston rod connected to one end surface side of the piston is formed to have a greater diameter than that of a second piston rod connected to another end surface side of the piston. Therefore, a second pressure-receiving area of a second pressure-receiving surface formed on the other end surface of the piston is greater than a first pressure-receiving area of a first pressure-receiving surface formed on the one end surface. Pressure fluid in the first cylinder chamber is supplied to the second cylinder chamber, whereby area difference between the first pressure-receiving area and the second pressure-receiving area causes the piston to move toward the first cylinder chamber.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 15/17 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type of differential-piston type
F15B 11/024 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
F15B 11/064 - Servomotor systems without provision for follow-up action involving features specific to the use of a compressible medium, e.g. air, steam with devices for saving the compressible medium
In an electric clamp apparatus, a drive unit including a motor is disposed on an end of a body on which a clamp arm is rotatably supported. The drive unit includes a hollow housing connected to the body, and a motor unit, which is configured to be accommodated in the interior of the housing. After the motor unit has been inserted into the interior of the housing from one end side thereof, two lock plates, which are disposed on a frame of the motor unit, are rotated, whereby holes of the lock plates are made to engage with projections of the housing. As a result, the motor unit is fixed in a state of being accommodated in the housing.
B23Q 1/26 - Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable membersMeans for preventing relative movement of such members
A pipe joint has a tube for fluid detachably fitted thereto, and is connected to a hydraulic device such as a cylinder. The pipe joint is provided with a resin body into which the tube for fluid is inserted, and a metal body which can rotate relative to the resin body. The resin body comprises orifices which each have a different opening diameter, and, as a result of the rotation of the resin body relative to the metal body, the orifices can be disposed in a connection part providing a connection path between the tube for fluid and the hydraulic device.
F16L 37/091 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
A clamp apparatus is equipped with a body, and a drive unit having a piston displaced under the supply of a pressure fluid. A clamp arm is disposed rotatably on the body. In addition, a piston rod of the drive unit is connected detachably with respect to a displaceable body of a driving force transmission mechanism which is disposed in the interior of the body. Upon detachment of a connector of the piston rod from a connecting recess of the displaceable body, the state of connection between the drive unit and the driving force transmission mechanism is released.
A pipe joint has a tube for fluid detachably fitted thereto, and is connected to a hydraulic device such as a cylinder. The pipe joint is provided with a body into which the tube for fluid is inserted, and an attachment/detachment mechanism which is provided inside the body and which can attach/detach the tube for fluid. An inner sleeve for connecting the tube for fluid and the hydraulic device is provided in the body, the inner sleeve being interchangeable with orifices having different opening diameters.
F16L 37/091 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
A clamp apparatus includes a pair of first and second clamp arms. A driving force transmission mechanism transmits a driving force of a drive unit, whereby the first clamp arm is operated to rotate via a link arm, while simultaneously, the second clamp arm is rotated, and after being rotated through a predetermined angle, under moving action of a roller, which is inserted into a cam groove of a link plate, rotation of the second clamp arm is stopped and maintained in advance with respect to the first clamp arm. Consequently, after positioning of a workpiece has been carried out by the second clamp arm, rotation of which is stopped, the first clamp arm continues to be rotated, whereby the workpiece is clamped.
A flow rate control device is provided with a flow rate adjustment indication device for operating the displacement of a needle valve relative to a flow passage. The flow rate adjustment indication device is provided with a housing, a rotation transmission member which displaces the needle valve by rotational operation, and an annularly shaped indication ring which has a hole through which the rotation transmission member is inserted. The indication ring has graduations which indicate a change in the flow rate of liquid. The engagement of the engagement section of the needle valve displaces the indication ring in the circumferential direction and changes the position of the graduations.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
F16K 1/04 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
F16K 31/50 - Mechanical actuating means with screw-spindle
In a solenoid valve system, a plurality of first through third solenoid valve units are divided into a plurality of first through third groups. In this case, a safety power source control unit is provided for controlling the first through third solenoid valve units with respect to each of the first through third groups.
F16K 11/10 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with two or more closure members not moving as a unit
G05D 16/20 - Control of fluid pressure characterised by the use of electric means
F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
An electric clamp apparatus includes a body, a rotary drive unit which is driven rotatably by an electric signal, and a clamp arm disposed rotatably with respect to the body. By driving the rotary drive unit, a drive force is transmitted to the clamp arm through a drive force transmission mechanism, whereby the clamp arm is rotated via a link arm through a predetermined angle with respect to the body, and a workpiece is clamped between the clamp arm and a support member of the body. Further, rotational operation of the clamp arm is regulated by abutment of a sub-roller against an inclined portion of a displacement body.
B23Q 3/02 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
An electric clamp apparatus includes a body, a rotary drive unit which is driven rotatably by an electric signal, and a rotary body rotated under a driving action of the rotary drive unit. Gear teeth of a clamp arm are enmeshed with helical screw grooves formed on the outer circumferential surface of the rotary body. The rotary body is rotated by driving the rotary drive unit, whereby the clamp arm, which is enmeshed with the screw grooves, is rotated through a predetermined angle to bring about a clamped state for clamping a workpiece.
A flow rate control device, including: a body including first and second ports for supplying and discharging pressurized fluid; a set of first and second solenoid valves connected to an upper part of the body and selecting a state of flow of the pressurized fluid; and an opening/closing valve for increasing a flow rate of the pressurized fluid which flows as the result of selection by the first and second solenoid valves. The pressurized fluid is caused to flow from the first port to the second port at a predetermined flow rate while the opening/closing valve is closed, and then the flow rate of the pressurized fluid flowing from the first port to the second port is increased by opening the opening/closing valve.
F15B 13/043 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
G05D 7/03 - Control of flow with auxiliary non-electric power
F15B 11/068 - Servomotor systems without provision for follow-up action involving features specific to the use of a compressible medium, e.g. air, steam with valves for gradually putting pneumatic systems under pressure
F16K 1/52 - Means for additional adjustment of the rate of flow
F16K 17/30 - Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
In a clamping device, a detection mechanism detects a state of clamping/unclamping and includes: a detected body that moves together with a piston and a piston rod; a circuit board disposed to face the detected body and capable of detecting the position of the detected body; and an indicator lamp that is connected to the circuit board and is lit/extinguished depending on the state of clamping/unclamping. By pressing a setting button provided on the detection mechanism when the rotation angle of the arm is changed, the second detection position of the circuit board for detecting the unclamped state is changed, making it possible to detect the detected body at a newly set detection position.
A flow-through condition of a pressure fluid between first through third ports formed in a body of a residual pressure release valve is switched by a valve plug of a valve mechanism. Between an operating unit for driving the valve mechanism and the body, a converter is disposed for converting rotational movement of the operating unit into linear movement and transferring the linear movement to the valve plug. The converter includes a cylindrical shaped cam ring including a pin inserted through the valve plug, and inclined grooves for guiding the pin. The cam ring includes two divided bodies separable from each other in a radial direction.
F16K 17/168 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
F16K 31/528 - Mechanical actuating means with crank, eccentric, or cam with pin and slot
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
A pipe joint is equipped with a body, and an attachment and detachment mechanism by which a fluid tube is mounted detachably with respect to the body. A pawl of a chuck that constitutes the attachment and detachment mechanism includes a stopper member that abuts against an outer circumferential surface of the fluid tube, and piercing members, distal ends of which project more toward a side of the fluid tube than the stopper member and pierce into the outer circumferential surface of the fluid tube.
F16L 37/091 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
F16L 37/092 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
The present invention pertains to a fluid pressure cylinder. In this fluid pressure cylinder (10), first and second cylinder chambers (36, 38) facing both end surfaces of a piston (18) are formed inside a cylinder tube (12) having a feed port (26) and an exhaust port (28), and a first piston rod (20) linked to one-end-surface side of the piston (18) is formed so as to have a greater diameter than that of a second piston rod (22) linked to the other-end-surface side of the piston (18). Therefore, the second pressure-receiving area (S2) of the second pressure-receiving surface (18b) formed on the other end surface of the piston (18) is greater than the first pressure-receiving area (S1) of the first pressure-receiving surface (18a) formed on the one end surface. The pressure fluid in the first cylinder chamber (36) is fed to the second cylinder chamber (38), whereby the area difference between the first pressure-receiving area (S1) and the second pressure-receiving area (S2) causes the piston (18) to move toward the first cylinder chamber (36).
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
16.
Valve having a diaphragm capable of displacement within a retaining member
A valve mechanism, which constitutes a solenoid valve as one example of a valve, includes a valve plug that is displaced in an axial direction under an excitation action of a solenoid unit, and is equipped with a flexible diaphragm disposed between a valve body and an annular groove formed on an outer circumferential surface of the valve plug. The diaphragm is flexible accompanying displacement of the valve plug and includes first through third projections on an inner edge portion thereof. In addition, the first through third projections are capable of coming into abutment, respectively, against an inner circumferential surface, a first wall surface, and a second wall surface of the annular groove. Further, the inner edge portion is inserted in the interior of the annular groove while being movable slightly in the direction of displacement of the valve plug.
F16K 5/08 - Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary Details
F16K 7/12 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm
F16K 41/12 - Spindle sealings with diaphragm, e.g. shaped as bellows or tube with approximately flat diaphragm
A linear actuator includes a guide mechanism and a retainer. On a guide block of the guide mechanism, a pair of ball-circulating grooves is formed on the lower surface that faces a cylinder body. Multiple balls are loaded in the ball-circulating grooves. Paired cover blocks are respectively mounted on the two ends of the guide block. The retainer has the form of paired ball clips, which are formed as arms to engage with the cover blocks when the clips are inserted in the ball-circulating grooves to hold the balls. Paired cover plates are respectively mounted on the end faces of the cover blocks, and arm-shaped cover clips are mounted so as to hold the cover plates. The cover plates, the cover blocks, and the guide block are thereby integrally linked.
F16C 33/66 - Special parts or details in view of lubrication
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 15/24 - Other details for restricting the stroke
In a case structure for a fluid pressure device, a filter that constitutes part of a fluid pressure unit is equipped with a first body, a case unit connected to a lower portion of the first body, and a filter unit accommodated in the interior of the case unit. The case unit is made up from an outer case, which is formed as a bottomed cylinder from a light-permeable transparent material, and an inner case inserted into the interior of the outer case. Additionally, by insertion of the case unit into an installation hole that opens on a lower portion of the first body and rotating the case unit, projections and retaining walls provided on an outer circumferential surface of the case unit engage with support members provided in the installation hole, thus placing the case unit in a connected state.
In relation to fluid pressure devices, a connection apparatus, by which a filter, a regulator and a lubricator that constitute a fluid pressure unit are mutually connected, is equipped with a base member having a hole therein, a pair of first and second fastening members mounted respectively on one side surface and another side surface of the base member, and first and second holders in which the first and second fastening members are retained. Additionally, the first and second holders engage respectively with engagement projections of the filter, the regulator and the lubricator, and first and second nuts are screw-engaged with the first and second fastening members, whereby the fluid pressure devices are connected together through the first and second holders.
F16L 23/04 - Flanged joints the flanges being connected by members tensioned in the radial plane
F15B 21/04 - Special measures taken in connection with the properties of the fluid
F16L 17/06 - Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
A filter apparatus is equipped with a first body, a case unit connected to a lower part of the first body, and a filter unit, which is accommodated in the interior of the case unit. The case unit is made up from an outer case, which is formed as a bottomed cylinder from a light-permeable transparent material, and an inner case that is inserted into the interior of the outer case. The case unit is inserted into an installation hole that opens on the lower part of the first body, and by rotation thereof, projections and retaining walls provided on an outer circumferential surface of the case unit are made to engage with support members provided in the installation hole, to thereby result in a connected state.
A position detecting device is equipped with a device main body into which a pressure fluid supplied from a pressure fluid supply source is introduced, and an attaching/detaching mechanism that enables attachment and detachment with respect to the device main body. The attaching/detaching mechanism includes an internal nozzle that delivers, toward the side of a detection nozzle, the pressure fluid supplied to the device main body, and a detection port that supplies, to the detection nozzle, the pressure fluid delivered from the internal nozzle.
A flow rate control apparatus includes a valve mechanism capable of controlling a flow rate of a pressure fluid that flows from a second port to a first port. Second stopper walls are formed on a seating section of a needle valve constituting the valve mechanism and which is capable of advancing and retracting in an axial direction. In addition, in a total valve-closed state when the seating section of the needle valve is seated on a seat of a first body, the second stopper walls come into abutment and are stopped in a circumferential direction of the needle valve with respect to first stopper walls of the first body.
F16K 1/04 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
F16K 1/06 - Special arrangements for improving the flow, e.g. special shape of passages or casings
A piston main body in a piston assembly of a fluid pressure cylinder includes a first piston member and a second piston member including a plate-shaped member. The first piston member and the second piston member are joined in a state overlapping in the axial direction of a piston rod. The second piston member is not provided with a hole that passes through in the plate thickness direction.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F16J 1/12 - Connection to driving members with piston-rods, i.e. rigid connections
B23K 11/00 - Resistance weldingSevering by resistance heating
A coupling structure for a piston used in a fluid-pressure cylinder. The piston in the fluid-pressure cylinder includes a piston hole that runs through a central part of the piston in an axial direction thereof. One end of a piston rod and a coupling body coupled to the one end are inserted into the piston hole. The coupling body includes: a main part that contacts the one end of the piston rod; and an angled part formed around the main part and inclined at a prescribed angle with respect thereto. When the coupling body is subjected to pressure inside the piston hole, the diameter of the coupling body increases and a pointed edge of the angled part engages with an inner surface of the piston hole such that the coupling body couples the piston and the piston rod.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
In an ionizer, two output resistors are connected to a needle electrode through a switch unit. DC high voltage generating circuits, respectively, generate DC high voltages continuously during operation of the ionizer. A first switch and a second switch, which constitute the switch unit, are turned ON in mutually different time bands, respectively.
In a solenoid valve control device, a plurality of solenoid valve blocks are connected in series with respect to a solenoid valve control unit. A solenoid valve operating circuit of a given solenoid valve block, to which a block selection signal from a block selection line is supplied, operates plural solenoid valves of the same given block, based on the block selection signal.
A pipe expanding tool includes levers rotatably connected to each other through a rotary shaft, grips disposed on ends of the levers, jaws disposed on other ends of the levers, and mandrels disposed on the jaws. An adjustment screw for adjusting an angle of rotation of the levers, a lock nut for fixing the adjustment screw, and a stopper that restricts rotation of the levers are further provided.
A clamp apparatus (10) includes a pair of first and second clamp arms (14, 16). A driving force transmission mechanism (20) transmits a driving force of a drive unit (18), whereby the first clamp arm (14) is operated to rotate via a link arm (104), while simultaneously, the second clamp arm (16) is rotated, and after being rotated through a predetermined angle, under moving action of a roller (102), which is inserted into a cam groove (64) of a link plate (56), rotation of the second clamp arm (16) is stopped and maintained in advance with respect to the first clamp arm (14). Consequently, after positioning of a workpiece has been carried out by the second clamp arm (16), rotation of which is stopped, the first clamp arm (14) continues to be rotated, whereby the workpiece is clamped.
A pipe joint (10) has a tube (12) for fluid detachably fitted thereto, and is connected to a hydraulic device (14) such as a cylinder. The pipe joint (10) is provided with a resin body (16a) into which the tube (12) for fluid is inserted, and a metal body (16b) which can rotate relative to the resin body (16a). The resin body (16a) comprises orifices (70a, 70b, 70c) which each have a different opening diameter, and, as a result of the rotation of the resin body (16a) relative to the metal body (16b), the orifices (70a, 70b, 70c) can be disposed in a connection part providing a connection path between the tube (12) for fluid and the hydraulic device (14).
F16L 37/12 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members
F16L 41/08 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
A clamp apparatus (10) is equipped with a body (12), and a drive unit (14) having a piston (32) displaced under the supply of a pressure fluid. A clamp arm (16) is disposed rotatably on the body (12). In addition, a piston rod (34) of the drive unit (14) is connected detachably with respect to a displaceable body (58) of a driving force transmission mechanism (18) which is disposed in the interior of the body (12). Upon detachment of a connector (54) of the piston rod (34) from a connecting recess (64) of the displaceable body (58), the state of connection between the drive unit (14) and the driving force transmission mechanism (18) is released.
In an electric clamp apparatus (10), a drive unit (14) having a motor (66) is disposed on an end of a body (12) on which a clamp arm (16) is rotatably supported. The drive unit (14) includes a hollow housing (54) connected to the body (12), and a motor unit (56), which is capable of being accommodated in the interior of the housing (54). After the motor unit (56) has been inserted into the interior of the housing (54) from one end side thereof, two lock plates (80a, 80b), which are disposed on a frame (68) of the motor unit (56) are rotated, whereby holes (84) of the lock plates (80a, 80b) are made to engage with projections (64a, 64b) of the housing (54). As a result, the motor unit (56) is fixed in a state of being accommodated in the housing (54).
A pipe joint (10) has a tube (12) for fluid detachably fitted thereto, and is connected to a hydraulic device (14) such as a cylinder. The pipe joint (10) is provided with a body (16) into which the tube (12) for fluid is inserted, and an attachment/detachment mechanism (26) which is provided inside the body (16) and which can attach/detach the tube (12) for fluid. An inner sleeve (66) for connecting the tube (12) for fluid and the hydraulic device (14) is provided in the body (16), the inner sleeve (66) being interchangeable with orifices (74) having different opening diameters.
F16L 37/12 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members using hooks, pawls, or other movable or insertable locking members
F16L 41/08 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
A two-way valve includes a valve body made of a resilient member and connected to a lower end of a shaft. The valve body is made up from a main body portion having an axial member connected to the shaft, and a thin film skirt portion formed on an outer circumferential side of the main body portion. An outer edge of the skirt portion is sandwiched and gripped between a small diameter part of a housing and a connector of a body. Further, lips that project in a downward direction are formed in a central portion of the main body portion. The lips are seated on a top portion of a partition wall in the body, so that the two-way valve is placed in a valve-closed state.
F16K 7/12 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm
F16K 31/122 - Operating meansReleasing devices actuated by fluid the fluid acting on a piston
A flow rate control device (10) is provided with a flow rate adjustment indication device (12) for operating the displacement of a needle valve (42) relative to a flow passage (40). The flow rate adjustment indication device (12) is provided with a housing (16), a rotation transmission member (110) which displaces the needle valve (42) by rotational operation, and an annularly shaped indication ring (114) which has a hole (172) through which the rotation transmission member (110) is inserted. The indication ring (114) has graduations (174) which indicate a change in the flow rate of liquid. The engagement of the engagement section (122) of the needle valve (42) displaces the indication ring (114) in the circumferential direction and changes the position of the graduations (174).
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
F16K 3/24 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
An open end of a cylinder main body is blocked by a cap, which includes a main body portion, and an outer edge portion that bends from the main body portion toward the open end of the cylinder main body, a distal end of the outer edge portion being locked with an inner circumferential wall. When a piston comes into abutment against the main body portion, a space is formed by the outer edge portion, the inner circumferential wall, and the end surface of the piston. A first port is disposed so as to communicate with the space, whereby the space serves as a space into which the pressure fluid is introduced.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
In a solenoid valve system (10, 10a, 100, 200, 300, 300a), a plurality of first through third solenoid valve units (14a to 14d, 16a to 16d, 18a to 18d) are divided into a plurality of first through third groups (14, 16, 18). In this case, a safety power source control unit (22, 22a) is provided for controlling the first through third solenoid valve units (14a to 14d, 16a to 16d, 18a to 18d) with respect to each of the first through third groups (14, 16, 18).
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
A stopper cylinder is equipped with a body having a drive unit, a piston mechanism being displaceable along an axial direction in the interior of a tube connected to the body, and a stopper lever connected to the piston mechanism for stopping conveyance of a workpiece. Displacement of the piston mechanism is restricted by an electromagnetic lock mechanism, which is disposed on the body and is excited by supply of electric power. After approaching the workpiece, by releasing a locked state of the electromagnetic lock mechanism, the piston mechanism is displaced to a position facing the workpiece by an elastic force of a spring.
An ionizer that acts as an electric charge generating device includes a first high voltage power source and a second high voltage power source, which are disposed in confronting relation to each other, and a first wiring arrangement and a second wiring arrangement, which are disposed in confronting relation to each other. The first high voltage power source applies an AC high voltage to needle electrodes via the first wiring arrangement, whereas the second high voltage power source applies an AC high voltage, which is 180° out of phase with the aforementioned AC high voltage, to needle electrodes via the second wiring arrangement.
In a flow sensor, a horizontal dimension Xt between short side wall portions facing respective sides of a vortex generator is longer than a vertical dimension Yt between long side wall portions facing respective ends of the vortex generator. The short side wall portions are formed linearly or in straight lines along the vortex generator, whereas the long side wall portions are curved at a predetermined radius of curvature.
G01F 1/32 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
G01F 1/66 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
An electric clamp apparatus (10) is equipped with a body (12), a rotary drive unit (14) which is driven rotatably by an electric signal, and a rotary body (28) rotated under a driving action of the rotary drive unit (14). Gear teeth (38) of a clamp arm (16) are enmeshed with helical screw grooves (30) formed on the outer circumferential surface of the rotary body (28). The rotary body (28) is rotated by driving the rotary drive unit (14), whereby the clamp arm (16), which is enmeshed with the screw grooves (30), is rotated through a predetermined angle to bring about a clamped state for clamping a workpiece.
An electric clamp apparatus (10) includes a body (12), a rotary drive unit (14) which is driven rotatably by an electric signal, a drive force transmission mechanism (18) for transmitting a rotary drive force of the rotary drive unit (14) to a toggle link mechanism (16), and a clamp arm (20) disposed rotatably with respect to the body (12). By driving the rotary drive unit (14), a drive force is transmitted to the clamp arm through the drive force transmission mechanism (18), whereby the clamp arm (20) is rotated through a predetermined angle with respect to the body (12), and a workpiece is clamped between the clamp arm (20) and a support member (22) of the body (12). At this time, an adjustment mechanism (52) disposed on the clamp arm (20) includes a rod (54), which advances and retracts so as to stably clamp workpieces of different plate thicknesses.
An electric clamp apparatus (10) includes a body (12), a rotary drive unit (14) which is driven rotatably by an electric signal, and a clamp arm (20) disposed rotatably with respect to the body (12). By driving the rotary drive unit (14), a drive force is transmitted to the clamp arm (20) through a drive force transmission mechanism (18), whereby the clamp arm (20) is rotated via a link arm (50) through a predetermined angle with respect to the body (12), and a workpiece is clamped between the clamp arm (20) and a support member (22) of the body (12). Further, rotational operation of the clamp arm (20) is regulated by abutment of a sub-roller (52) against an inclined portion (46) of a displacement body (28).
In a body of an electric actuator, dust collecting pipes are disposed as a pair along an axial direction of a hole portion of the body. The dust collecting pipes are connected respectively to negative pressure supply ports provided in an end block, and include plural first through fifth suction holes separated mutually along an axial direction of the dust collecting pipes. Distances between the first through fifth suction holes are formed so as to become smaller stepwise from one end side of the dust collection pipes, on the side of the negative pressure supply ports, to the other end side thereof.
The electromagnetic actuator is a linear electromagnetic actuator in which the relative position between a slide table that supports permanent magnets thereon and a guide rail that supports a coil, which is arranged in confronting relation to the permanent magnets, is displaced by means of a thrust force generated by a current flowing through the coil. The coil is disposed on the guide rail through a low coercive force magnetizable material body, the coercive force of which is lower than a predetermined value. Consequently, generation of residual magnetization can be suppressed, and an influence on the thrust force caused by such residual magnetization can also be suppressed.
A pipe joint contains a body having a fluid passage in the interior thereof, a tightening cap screw-engaged with an end of the body for connecting a tube thereto, and an indicator ring interposed between a stopper of the body and an end of the tightening cap. The indicator ring is equipped with a flat section and an inclined section, which is inclined with respect to the flat section, and is formed with a smaller diameter than an outer circumferential surface of the tightening cap. When the tightening cap is screw-rotated to thereby connect the tube, as a result of the inclined section being pressed and deformed by movement of the tightening cap, the inclined section projects radially outward with respect to the outer circumferential surface of the tightening cap, whereby a tightened condition is visually confirmed by the outer edge of the indicator ring.
F16L 47/04 - Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
F16L 19/028 - Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
A pinch valve includes a spring disposed between a movable iron core of a solenoid and an end cover thereof, and which urges the movable iron core toward the side of a tube provided in a body. An elastic force of the spring is set to be smaller than a reactive force of the tube that is applied to a valve plug. In a non-excited state of the solenoid, the valve plug is pressed toward the solenoid by the reactive force of the tube, so as to enable a fluid to flow through a flow passage of the tube. Conversely, in an excited state of the solenoid, since an attractive force of the movable iron core toward the tube is added to the elastic force of the spring, the valve plug is pressed in opposition to the reactive force of the tube for thereby blocking the flow passage.
F16K 7/04 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with tubular diaphragm constrictable by external radial force
F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
The present invention relates to a flow rate control device, and the flow rate control device (10) comprises: a body (16) having first and second ports (12, 14) for supplying and discharging pressurized fluid; a set of first and second solenoid valves (18, 20) connected to the upper part of the body (16) and selecting the state of flow of the pressurized fluid; and an opening/closing valve (22) for increasing the flow rate of the pressurized fluid which flows as the result of the selection by the first and second solenoid valves (18, 20). The pressurized fluid is caused to flow from the first port (12) to the second port (14) at a predetermined flow rate while the opening/closing valve (22) is closed, and then the flow rate of the pressurized fluid flowing from the first port (12) to the second port (14) is increased by opening the opening/closing valve (22).
F15B 11/06 - Servomotor systems without provision for follow-up action involving features specific to the use of a compressible medium, e.g. air, steam
F15B 11/00 - Servomotor systems without provision for follow-up action
A check valve includes connected first and second bodies respectively disposed on upstream and downstream sides. A valve plug is disposed displaceably in a communication chamber formed in the interior of the first body. A skirt urges a main body portion of the valve plug in a direction for seating the main body portion on a valve seat surface, and is provided on the valve plug such that the main body portion is seated on the valve seat surface by an elastic force of the skirt. By supplying a pressure fluid to the first body, the valve plug is displaced in opposition to the elastic force of the skirt, whereby the interior of the first body and the interior of the second body are placed in communication and the pressure fluid is allowed to flow therethrough.
A solenoid valve. In a solenoid section forming part of the solenoid valve, a sleeve is provided on the inner circumferential side of a bobbin around which a coil is wound. This sleeve is formed from magnetic material and includes a cylindrical section and a flange section formed at a lower end of the cylindrical section. At an upper end of the cylindrical section, a tapered section is formed in which an outer circumferential face is recessed in the radially inward direction. The tapered section is arranged facing and in close contact with the outer circumferential face of a fixed core such that the magnetic flux density in the tapered section increases when the solenoid section is excited.
A pressure reducing apparatus includes a body being equipped with a first side port through which a pressure fluid is supplied and a second side port through which the pressure fluid having been reduced in pressure is discharged. Further, a feedback passage is formed, which establishes communication between the second side port and a third diaphragm chamber that faces toward a pilot valve. Additionally, a pressure fluid that flows through the second side port is introduced through the feedback passage into the third diaphragm chamber, whereby a third diaphragm is pressed upwardly against an elastic force of a second spring into equilibrium.
The flow-through condition of a pressure fluid between first through third ports (20, 22, 24) formed in a body (12, 14) of a residual pressure release valve (10) is switched by a valve plug (90) of a valve mechanism (16). Between an operating unit (18) for driving the valve mechanism (16) and the body (12, 14), a converting means is disposed for converting rotational movement of the operating unit (18) into linear movement and transferring the linear movement to the valve plug (90). The converting means is made up from a cylindrical shaped cam ring (68) including a pin (92) inserted through the valve plug (90), and inclined grooves (78a, 78b) for guiding the pin (92). The cam ring (68) is formed from two divided bodies (72a, 72b) which are separable from each other in a radial direction.
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
F16K 31/528 - Mechanical actuating means with crank, eccentric, or cam with pin and slot
In the clamping device (10), a detection mechanism (24) that detects the state of clamping/unclamping is provided with: a detected body (96) that moves together with a piston (48) and a piston rod (50); a circuit board (94) disposed so as to face the detected body (96) and capable of detecting the position of the detected body (96); and an indicator lamp (108) that is connected to the circuit board (94) and is lit/extinguished depending on the state of clamping/unclamping. By pressing a setting button (110) provided on the detection mechanism (24) when the rotation angle of the arm (22) is changed, the second detection position (128) of the circuit board (94) for detecting the unclamped state is changed, making it possible to detect the detected body (96) at a newly set detection position.
The invention relates to a linear actuator. On a guide block (76) that configures a guide mechanism (16), a pair of ball-circulating grooves (80) is formed on the lower surface that faces a cylinder body (12) and multiple balls (58) are loaded in the ball-circulating grooves (80). Paired cover blocks (78a, 78b) are respectively mounted on the two ends of the guide block (76). Paired ball clips (82a, 82b), which are formed as arms, are engaged with the cover blocks (78a, 78b) when the clips are inserted in the ball-circulating grooves (80) and are holding the balls (58). Paired cover plates (86a, 86b) are respectively mounted on the end faces of the cover blocks (78a, 78b), and arm-shaped cover clips (84a, 84b) are mounted so as to hold the cover plates (86a, 86b). The cover plates (86a, 86b), the cover blocks (78a, 78b) and the guide block (76) are thereby integrally linked.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F16C 29/06 - Ball or roller bearings in which the rolling bodies circulate partly without carrying load
A valve structure for a fluid pressure device. A valve element for constituting a pressure reducing valve is provided with a first housing which is interconnected with a stem, a second housing which is provided on the outer peripheral side of the first housing, and packing which is provided between the first housing and the second housing. The packing is mounted and sandwiched between a tapered section of the first housing and an outer wall section of the second housing, and thereby the packing is affixed. A first tube section of the first housing is inserted into a second tube section of the second housing, and the first housing and the second housing are affixed integrally to each other by, for example, welding or adhesion.
G05D 16/06 - Control of fluid pressure without auxiliary power the sensing element being a flexible member yielding to pressure, e.g. diaphragm, bellows, capsule
F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
68.
PISTON ASSEMBLY, FLUID PRESSURE CYLINDER, METHOD FOR MANUFACTURING PISTON ASSEMBLY
A piston main body (13) in a piston assembly (10A) of a fluid pressure cylinder (11) has a first piston member (40) and a second piston member (42) composed of a plate-shaped member. The first piston member (40) and the second piston member (42) are joined in a state overlapping in the axial direction of a piston rod (15). The second piston member (42) is not provided with a hole that passes through in the plate thickness direction.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 15/28 - Means for indicating the position, e.g. end of stroke
F16J 1/12 - Connection to driving members with piston-rods, i.e. rigid connections
A flow rate control apparatus (10) is equipped with a valve mechanism (20), which is capable of controlling a flow rate of a pressure fluid that flows from a second port (16) to a first port (12). Second stopper walls (110a, 110b) are formed on a seating section (100) of a needle valve (24) constituting the valve mechanism (20) and which is capable of advancing and retracting in an axial direction. In addition, in a total valve-closed state when the seating section (100) of the needle valve (24) is seated on a seat (50) of a first body (14), the second stopper walls (110a, 110b) come into abutment and are stopped in a circumferential direction of the needle valve (24) with respect to first stopper walls (54a, 54b) of the first body (14).
F16K 1/04 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
The present invention relates to a coupling structure for a piston used in a fluid-pressure cylinder. The piston (16) in said fluid-pressure cylinder (10) contains a piston hole (44) that runs through the central part of said piston in the axial direction thereof. One end (18a) of a piston rod (18) and a coupling body (20) coupled to said one end (18a) are inserted into the aforementioned piston hole (44). Said coupling body (20) is provided with the following: a main part (46) that contacts the aforementioned one end (18a) of the piston rod (18); and an angled part (48) that is formed around the aforementioned main part (46) and inclined at a prescribed angle with respect thereto. When the coupling body (20) is subjected to pressure inside the piston hole (44), the diameter of the coupling body increases and the pointed edge (50) of the angled part (48) engages with the inner surface of the piston hole (44) such that the coupling body (20) couples the piston (16) and the piston rod (18).
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F16J 1/12 - Connection to driving members with piston-rods, i.e. rigid connections
In relation to fluid pressure devices, a connection apparatus (18a, 18b), by which a filter (12), a regulator (14) and a lubricator (16) that constitute a fluid pressure unit (10) are mutually connected, is equipped with a base member (86) having a hole (98) therein, a pair of first and second fastening members (88, 90) mounted respectively on one side surface and another side surface of the base member (86), and first and second holders (92, 94) in which the first and second fastening members (88, 90) are retained. Additionally, the first and second holders (92, 94) engage respectively with engagement projections of the filter (12), the regulator (14) and the lubricator (16), and first and second nuts (126, 128) are screw-engaged with the first and second fastening members (88, 90), whereby the fluid pressure devices are connected together through the first and second holders (92, 94).
In a case structure for a fluid pressure device, a filter (12) that constitutes part of a fluid pressure unit (10) is equipped with a first body (20), a case unit (22) connected to a lower portion of the first body (20), and a filter unit (24) accommodated in the interior of the case unit (22). The case unit (22) is made up from an outer case (40), which is formed as a bottomed cylinder from a light-permeable transparent material, and an inner case (42) inserted into the interior of the outer case (40). Additionally, by insertion of the case unit (22) into an installation hole (36) that opens on a lower portion of the first body (20) and rotating the case unit (22), projections (58) and retaining walls (56) provided on an outer circumferential surface of the case unit (22) engage with support members (38) provided in the installation hole (36), thus placing the case unit (22) in a connected state.
A filter apparatus (12) is equipped with a first body (20), a case unit (22) connected to a lower part of the first body (20), and a filter unit (24), which is accommodated in the interior of the case unit (22). The case unit (22) is made up from an outer case (40), which is formed as a bottomed cylinder from a light-permeable transparent material, and an inner case (42) that is inserted into the interior of the outer case (40). The case unit (22) is inserted into an installation hole (36) that opens on the lower part of the first body (20), and by rotation thereof, projections (58) and retaining walls (56) provided on an outer circumferential surface of the case unit (22) are made to engage with support members (38) provided in the installation hole (36), to thereby result in a connected state.
The present invention is related to a wear ring, the wear ring (20) being attached to the outer peripheral side of a piston (16) in a fluid pressure cylinder (10). An inner peripheral surface (58b) of an annular body (58) protrudes radially inward in a cross-sectionally arcuate shape. An outer peripheral surface (58a) of the body (58) is formed in a planar shape substantially parallel to an axis of the body (58), and abuts an inner wall surface (12a) of a cylinder tube (12). The wear ring (20) is provided so as to be capable of tilting relative to a third annular groove (52) of the piston (16) in accordance with the inner peripheral surface (58b).
F16J 9/20 - Rings with special cross-sectionOil-scraping rings
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
A flow control device is provided with a first body having a first port through which pressure fluid is supplied, and a second body which is installed on the first body. A valve mechanism which controls the circulation state of the pressure fluid that circulates from the first port to a second port is provided inside this first body. Furthermore, a first connecting section of the first body is inserted into and engaged with the inside of a second connecting section formed at the upper end of the second body, resulting in the first body and the second body being integrally connected together.
F16K 1/04 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
A linear actuator includes a cylinder main body, which is provided at one end thereof with a lock mechanism capable of restricting displacement of a slide table. The lock mechanism is equipped with a lock plate and a sub-piston. The lock plate is rotatable toward a side of the slide table by an elastic force of a spring, inserted into an insertion groove, and restricts displacement of the slide table. The sub-piston is displaced by a pressure fluid supplied to a supply port, and releases a displacement restricted state of the slide table by the lock plate.
A retaining stud is inserted from a bottom portion of a suction pad that constitutes part of an ejector equipped suction apparatus, and an end of the retaining stud is inserted into an adapter plate. Further, a small diameter portion of a lock plate engages with a lock plate groove, which is exposed externally on the retaining stud, whereby the retaining stud and the lock plate are connected together integrally. In addition, an ejector is fixed using a side wall portion of the adapter plate. A mounting bracket is attached to the adapter plate while covering the lock plate, and a transfer means such as a robot arm or the like is fixed to the mounting bracket using a bolt.
A pipe joint has a body, and an annular packing is mounted to the opening of the body into which a fluid tube is inserted. The packing is provided with: a body section having a substantially rectangular cross-sectional shape; and a seal section protruding in the radial direction from the inner peripheral surface of the body section. The seal section is formed at substantially the center of the body section in the widthwise direction thereof and is formed in a triangular cross-sectional shape tapering to the inner peripheral side. When the fluid tube is inserted in the opening, the seal section of the packing makes sliding contact with the outer peripheral surface of the fluid tube.
F16L 37/091 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of a ring provided with teeth or fingers
F16L 41/00 - Branching pipesJoining pipes to walls
A flow controller includes a flow detection unit that includes a detection unit for detecting the flow rate of a fluid; and a flow control unit that is coupled to the flow detection unit and that is capable of adjusting the flow rate of the fluid. The detection sensor constituting the detection unit includes a thermal flow sensor using MEMS technology, and the flow rate of the fluid that has been detected by the detection sensor is output to a control unit. In addition, in the flow control unit, the supply state of air to a supply room is switched by each of a supply-use solenoid valve and an exhaust-use solenoid valve, and on the basis of the supply state of the air, a control valve opens and closes.
A pressure container is provided with a container body, a container lid, and a band coupling. The band coupling is provided with a retainer capable of engaging with the outer peripheries of a first flange section and a second flange section, and also with a tightening mechanism for tightening the retainer. The retainer has a first end section forming one end to which the tightening mechanism is connected, and also has a second end section forming the other end which is bent outward and faces the first end section when the retainer is tightened. The tightening mechanism is provided with a stopper rotatably mounted to the first end section of the retainer, and also with a pressing bolt engaged through thread with the stopper so as to be able to advance and recede and pressing the second end section to the first end section side with the retainer engaged with the first flange section and the second flange section. A projection section which is caught by the pressing bolt when the pressing bolt presses the second end section is provided to the second end section.
B65D 45/32 - Clamping or other pressure-applying devices for securing or retaining closure members for applying radial pressure, e.g. contractible bands encircling closure member
Clamp devices configured such that dust does not enter insides of casings. The clamp devices each include the casing, and a clamp-side end section of a clamp arm is exposed from an opening of the casing. The clamp arm includes: a first circular arc section which is exposed from the casing when a workpiece is clamped by the clamp arm and is contained within the casing when the workpiece is not clamped by the clamp arm; and a second circular arc section which is exposed from the casing when the workpiece is not clamped by the clamp arm and is contained within the casing when the workpiece is clamped by the clamp arm. A first scraper and a second scraper are in sliding contact with the first circular arc section and the second circular arc section, respectively. The clamp device can also include a side surface cleaning scraper for making sliding contact with a side surface of the first circular section.
A flow rate control valve, wherein the flow rate control valve is provided with a first circular tube section having first and second ports formed on a body forming the flow rate control valve, and also with a plate section mounted to the upper part of the first circular tube section through a mounting section. The plate section is provided to only one end side of the first circular tube section, is supported on the mounting section in a cantilever manner, and is formed flat.
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
A filter including a container and a basket which is contained in the container and has mounted thereto a bag-like filter element and filtering liquid to be processed by allowing the liquid to pass through the filter element. The filter includes an upper tubular section forming the upper part of the basket and having an upper end open, and an annular seal mounted inside the container and held between the upper tubular section and the container. The upper tubular section has a first fitting surface having an outer diameter decreasing downward. The seal has a second fitting surface having an inner diameter which decreases downward and engaging with the first fitting surface. When the seal receives force acting outward radially from the upper tubular section, compressive deformation of the seal is limited to a predetermined amount.
B01D 29/00 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor
A leg structure supports in an upright position a container having a piping port in the bottom of the container. The leg structure is provided with fixed legs fixed or removably mounted to the container, a movable leg capable of moving relative to the fixed legs so as to approach and be separated in the horizontal direction from the fixed legs while supporting the container, and the connecting section for connecting the container and the fixed legs to each other such that the container is maintained upright relative to the fixed legs.
A linear actuator displaces a relative position between a guide rail and a slide table, which is arranged in confronting relation to the guide rail. Projections are formed on opposite end sides of the guide rail, the projections extending along a direction of displacement and projecting toward the slide table. The slide table is disposed between the projections on the opposite end sides of the guide rail, with rigid balls being interposed therebetween. Guide grooves and guide grooves, which rollably support the balls, are provided on the projections on the opposite end sides of the guide rail and on the slide table. The guide grooves and the guide grooves apply, on the balls, a pressure caused by a magnetic attractive force of permanent magnets.
A solenoid pump is equipped with a housing formed therein with a fluid passage through which a fluid flows from an inlet port to an outlet port, and a movable member, which is displaced based on an excitation state of a solenoid section, for thereby opening and closing the fluid passage. The fluid passage includes an inlet side passage that communicates with the inlet port, an outlet side passage that communicates with the outlet port, and a pump chamber made up of a space in communication with the inlet side passage and the outlet side passage, and surrounded by the housing and an end portion of the movable member. Accompanying displacement thereof, the movable member opens and closes communication between the pump chamber and the outlet side passage.
Roller insertion grooves are formed along the longitudinal direction of inner wall portions of side frames, which are provided in the interior of a housing that makes up a gate valve. Respective pairs of retaining rollers are inserted into the roller insertion grooves. A valve disk is tilted, such that in a valve closed state in which the valve disk is seated on a valve seat, a load imposed from a displacement block, which is connected to a valve rod and tiltably displaced thereby, is imposed on the retaining rollers, the load being borne by first and second pressure receiving bodies, which abut against the retaining rollers and are disposed on the side frames. The first and second pressure receiving bodies are formed from a material having a hardness greater than that of the side frames.
Disclosed is a solenoid valve. In a solenoid section (22) forming part of a solenoid valve (10), a sleeve (40) is provided on the inner circumferential side of a bobbin (36) around which a coil (34) is wound. This sleeve (40) is formed from magnetic material and has a cylindrical section (46) and a flange section (48) formed at the lower end of the cylindrical section (46). At the upper end of the cylindrical section (46), a tapered section (50) is formed in which the outer circumferential face is recessed in the radially inward direction. The tapered section (50) is arranged facing and in close contact with the outer circumferential face of a fixed core (38) such that the magnetic flux density in the tapered section (50) increases when the solenoid section (22) is excited.
A pressure reducing apparatus (10) includes a body (12) being equipped with a first side port (20) through which a pressure fluid is supplied and a second side port (22) through which the pressure fluid having been reduced in pressure is discharged. Further, a feedback passage (64) is formed, which establishes communication between the second side port (22) and a third diaphragm chamber (90) that faces toward a pilot valve (93). Additionally, a pressure fluid that flows through the second side port (22) is introduced through the feedback passage (64) into the third diaphragm chamber (90), whereby a third diaphragm (78) is pressed upwardly against an elastic force of a second spring (82) into equilibrium.
A flow rate control valve, which is capable of controlling the flow rate of a fluid that flows between a pair of ports by displacing a rod, includes a valve mechanism in an axial direction. The valve mechanism includes a body having the ports and a pair of fluid passages through which fluid supplied from the ports flows. The valve mechanism includes a sub-body disposed in an interior of the body, and in which the rod is screw-engaged in an advancing and retracting manner. The valve mechanism also includes a tubular shaped seat connected to an end of the sub-body, including a seat structure to seat the rod thereon, and a hole that communicates between one of the fluid passages and another of the fluid passages.
F16K 1/04 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
In a fluid pressure apparatus, a packing includes an annular seal member made of an elastic material, and support rings made of a low-friction material, which are mounted on an outer circumference of the seal member. The seal member includes, on an outer circumference thereof, a sealing projection that contacts an inner surface of the slide hole. The support rings are disposed on both sides of the sealing projection, and protrude beyond the seal member in the axial direction. Outer circumferential surfaces of the support rings always contact the inner circumferential surface of the slide hole. When a transverse load does not act on a piston as a partitioning member, the inner circumferential surfaces of the support rings do not contact the outer circumference of the piston. When a transverse load acts on the piston, the inner circumferential surfaces of the support rings contact the outer circumference of the piston.
A fluid pressure apparatus includes a piston, and a packing provided on an outer circumference of the piston. The packing includes a support ring made of a low-friction material, and a ring-shaped seal member mounted to the support ring. When at least a certain amount of transverse load acts on the piston, an outer circumferential surface of the support ring abuts against an inner circumferential surface of the slide hole, whereby the piston is prevented from contacting with the inner circumferential surface of the slide hole.
F16J 15/16 - Sealings between relatively-moving surfaces
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F16J 15/56 - Other sealings for reciprocating rods
A non-contact transport apparatus includes a housing and a plate which is fitted into a circular recess formed at a central portion in a lower surface of the housing. The housing is formed in an octagonal shape corresponding to the shape of a workpiece to be transported. In the plate, a plurality of nozzles are arranged radially at equal angular intervals. The nozzles include first nozzle grooves and second nozzle grooves having cross sectional areas that are determined in proportion to distances between a principal side of the housing and the nozzle and between an oblique side of the housing and the nozzle for making the flow rates of the pressure fluid through the first nozzle groove and the second nozzle groove different.
In a pipe joint, a tapered male screw thread is provided at one end and a joint connection section which is connected to a joint section is provided at the other end. The tapered male screw thread has a length adapted so that, when the tapered male screw thread has been fastened to a tapered female screw thread formed in an end cap, the entire length is engaged with the tapered female screw thread, and the sealing effect is obtained by a seal member.
F16L 27/00 - Adjustable jointsJoints allowing movement
F16L 41/10 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe the extremity of the pipe being screwed into the wall
F16L 41/00 - Branching pipesJoining pipes to walls
The present invention relates to a linear actuator. A slide table of the linear actuator includes a table main body and an end plate connected to another end of the table main body. On a base portion of the table main body, four workpiece retaining holes are formed, and fitting seats are disposed respectively about the workpiece retaining holes on radial outer sides thereof. The fitting seats are formed at the same time that the table main body is formed by press molding.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
99.
Cap for use in fluid pressure device and fixing method therefor
A pair of penetrating holes are formed along a longitudinal direction in the interior of a cylinder body that constitutes a fluid pressure cylinder. One end of the pair of penetrating holes is sealed by a pair of caps formed in plate-like shapes. The caps, for example, are formed by press molding a plate body made up from a metal material such as aluminum or the like. Outer edge portions of the caps include bent portions, which are inclined at a predetermined angle in a radial outward direction. In addition, the caps are installed by means of the bent portions biting into inner circumferential surfaces of the penetrating holes.
B65D 45/16 - Clips, hooks, or clamps, e.g. C-shaped
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
A valve structure for a fluid pressure device. A valve element (50) for constituting a pressure reducing valve (10) is provided with a first housing (58) which is interconnected with a stem (48), a second housing (60) which is provided on the outer peripheral side of the first housing (58), and packing (62) which is provided between the first housing (58) and the second housing (60). The packing (62) is mounted and sandwiched between a tapered section (66) of the first housing (58) and an outer wall section (74) of the second housing (60), and thereby the packing (62) is affixed. A first tube section (64) of the first housing (58) is inserted into a second tube section (70) of the second housing (60), and the first housing (58) and the second housing (60) are affixed integrally to each other by, for example, welding or adhesion.
G05D 16/06 - Control of fluid pressure without auxiliary power the sensing element being a flexible member yielding to pressure, e.g. diaphragm, bellows, capsule
