Provided are a motor core that can be cooled effectively, and a motor comprising said motor core. In a preparation step, a through-hole is formed in first electromagnetic steel sheets that are at least some of a plurality of electromagnetic steel sheets 100, and a coating layer 38 that covers the surfaces of the plurality of electromagnetic steel sheets 100 is formed. In a stacking step S4, the plurality of electromagnetic steel sheets 100 are stacked, whereby the through-holes in the first electromagnetic steel sheets are allowed to communicate with each other, and a cooling passage 34 through which cooling medium can flow is formed. In a bonding step S6, mutually adjacent electromagnetic steel sheets 100 are bonded to each other using the coating layer 38, the coating layer 38 providing a seal between the mutually adjacent electromagnetic steel sheets 100.
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
A bearing (10) comprises a tubular substrate (12) and a resin layer (14). The resin layer (14) is joined to an inner peripheral surface (C1) of the substrate (12), and, in the surface on the side of the surface (C2) facing a shaft member that is seated at the inner peripheral surface (C1) side of the substrate (12), a plurality of grooves (MG) are provided running in a direction that intersects the direction of extension (Z) of the shaft member. The resin layer (14) contains a synthetic resin (16) and an additive (18) dispersed in the synthetic resin (16). The average particle size of the additive (18) is less than the depth (d) of the grooves (MG).
Provided is a compressing mechanism in which wear and seizure can be suppressed. The compressing mechanism is provided with a bush 60 having a first sliding surface 61 that slides along an inner surface 45a of a bush hole 45, and a second sliding surface 63 that slides along a side surface 52a of a blade of a piston. The compressing mechanism has at least one of: a first bulging portion 62 formed on one of the first sliding surface 61 and the inner surface 45a such that a gap X between the first sliding surface 61 and the inner surface 45a becomes gradually smaller in the direction in which lubricating oil Y is drawn in between the first sliding surface 61 and the inner surface 45a concomitant with rocking of the bush 60; and a second bulging portion 64 formed on the second sliding surface 63 such that a gap X between the second sliding surface 63 and the side surface 52a becomes gradually smaller in the direction in which the lubricating oil Y is drawn in between the second sliding surface 63 and the side surface 52a concomitant with advancing and retreating of the blade.
F04C 18/32 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movement defined in group and relative reciprocation between the co-operating members
4.
FUEL BATTERY COMPRESSION MECHANISM AND FUEL BATTERY EQUIPPED WITH SAME
Provided are: a fuel battery compression mechanism capable of suppressing detachment of a biasing part which biases a cell group; and a fuel battery equipped with the same. This fuel battery compression mechanism is equipped with: plates provided at one end portion 11 of a stack case 10 for accommodating a cell group 20 formed by arraying a plurality of fuel battery cells; and biasing parts (first biasing part 50, second biasing part 80) that are provided to the plates and that bias the cell group 20 so as to compress the cell group in the arraying direction. The plates include an end plate 70 and a pressure plate 30 disposed between the end plate 70 and the cell group 20. The fuel battery compression mechanism is equipped with a covering member (first film 60, second film 90) that is provided to, among the end plate 70 and the pressure plate 30, at least one of the plates, and that is provided so as to cover a portion of said plate and the corresponding one of the biasing parts provided to the plate.
Provided is a separator capable of effectively utilizing an area. A plate-shaped separator 100 that constitutes a fuel cell 1 and is arranged adjacent to a membrane electrode assembly 200 to which a fuel gas and an oxidizing gas are supplied, the separator comprising: an anode separator 110 having an anode side surface 110a in which a fuel gas flow channel 117 is formed; a cathode separator 120 having a cathode side surface 120a in which an oxidant gas flow channel 127 is formed; a joint portion 130 that extends so as to surround the fuel gas flow channel 117 and the oxidant gas flow channel 127 and joins the anode separator 110 and the cathode separator 120 to each other; and an outer peripheral seal portion 140 that is provided in the fuel gas flow channel 117 and/or the oxidant gas flow channel 127 and is formed to extend along the joint portion 130 and overlap with the joint portion 130 when viewed in the thickness direction of the separator 100.
This semi-floating bearing (2) comprises: a bearing body (20); and a journal bearing surface (21) which is disposed on the inner circumferential surface of the bearing body (20) and radially supports a rotary shaft (50) with an oil film therebetween. The semi-floating bearing (2) comprises a groove section (23) which passes through the journal bearing surface (21) in a direction including the axial direction of the bearing. In the radial cross-section of the semi-floating bearing (2), the journal bearing surface (21) has three of more arc sections (21a) which are alternately disposed in the circumferential direction of the bearing and bulge toward the radial outside; and three or more connection sections (21b) which have smaller curvatures than the arc sections (21a). The groove section (23) is disposed on the arc sections (21a) or on the connection sections (21b). The connection sections (21b) each have a narrowest section (210b) in which a gap between the connection section (21b) and the rotary shaft (50) becomes the narrowest.
Provided is a crankshaft that has excellent seizing resistance. A crankshaft (10) comprises journals (11) and pins (12), wherein: the chemical composition in mass percent is C at 0.35-0.40%, Si at 0.70% or less, Mn at 1.00-2:00%, Cr at 0.50% or less, Al at 0.050% or less, N at 0.020% or less, P at 0.020% or less, S at 0.005-0.200%, and the remainder being Fe and impurities; and the journals (11) and the pins (12) both have a surface composition that includes at least 80 vol% of tempered martensite, and a surface hardness of HV450 or less.
C21D 9/30 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for crankshaftsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for camshafts
[Problem] To provide a sliding member comprising an overlay capable of realizing good fatigue resistance while preventing peeling between layers. [Solution] A sliding member comprising an overlay formed by a Bi-Sb alloy plating film, wherein a Bi-Sb oxide is formed on the surface of the overlay.
B22F 7/04 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers with one or more layers not made from powder, e.g. made from solid metal
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
C25D 5/50 - After-treatment of electroplated surfaces by heat-treatment
C25D 7/00 - Electroplating characterised by the article coated
F16C 33/12 - Structural compositionUse of special materials or surface treatments, e.g. for rust-proofing
A sliding member (10) comprises: a base material (12); a porous sintered layer (14) disposed on the base material (12); and a resin layer (16) which is impregnated in the porous sintered layer (14) and also disposed on the porous sintered layer (14). The porous sintered layer (14) has a porosity that decreases from a second surface (S2), which is one of two end surfaces in the thickness direction and which opposes a first surface (S1) that is on the base material side, toward the first surface (S1). The porosity decrease rate in the thickness direction (Z) of a first region (E1), which is at least 50% of the thickness of the porous sintered layer (14) from the second surface (S2) toward the first surface (S1), is greater than the porosity decrease rate in the thickness direction (Z) of a second region (E2), which is a region of the porous sintered layer (14) other than the first region (E1).
A blower device comprising: a case; a motor provided inside the case and having a rotatable shaft; two blowers provided inside the case and each comprising an impeller having a number of blades disposed at regular intervals on a circumferential part thereof and fixed to the shaft to be rotatable by the motor; an intake port provided in the case for taking air in between the two blowers; and discharge ports provided in the case respectively corresponding to the two blowers for discharging the air taken through the intake port to the corresponding blowers to the outside. The side of the part of the case in which each of the two blowers is stored opposite to the side where air is taken in is closed so as to prevent an inflow of air.
A resin material 16 for sliding members according to the present invention is composed of a synthetic resin 18, graphite particles 20 that are dispersed in the synthetic resin 18, and a hard material 24. The synthetic resin 18 contains from 5% by volume to 30% by volume of PTFE 22; the graphite particles 20 have an average particle diameter of 0.5 μm or more but less than 5.0 μm; and the synthetic resin 18 has a volume of 1% by volume or more but less than 15% by volume.
The present invention addresses the problem of improving wear resistance and seizure resistance in a copper-alloy sliding material. Provided is a copper-alloy sliding material containing 0.5-12.0 mass% of Sn, 2.0-8.0 mass% of Bi, and 1.0-5.0 vol% of an inorganic compound, with the remainder comprising Cu and inevitable impurities, wherein the inorganic compound comprises a first inorganic compound having an average particle size of 0.5-3.0 μm and a second inorganic compound having an average particle size of 4.0-20.0 μm, and the value obtained by dividing the volume fraction of the first inorganic compound by the volume fraction of the second inorganic compound is 0.1-1.0.
Provided is a swash-plate for a compressor capable of suppressing the occurrence of seizure. This swash-plate (3) is provided with a flat substrate (31) and a coating layer (32) that covers the surface of the substrate (31), and slides on a shoe (5) by rotating, wherein the coating layer (32) includes: a first coating layer (32a) formed in a first range T1 set on the inner side in the radial direction of the substrate (31), in the sliding range S into the shoe (5); and a second coating layer (32b) formed in a second range T2 set outside the first range T1 in the radial direction in the sliding range S, and the first coating layer (32a) has higher wettability with respect to a lubricating oil supplied between the shoes (5) than the second coating layer (32b).
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
This sliding bearing (40) is formed by a pair of split bearings (41a, 42a). The thickness (T2) at the circumferentially central position (P2) of one (42a) of the split bearings is greater than the thickness (T1) at the circumferentially central position of the other bearing (41a). By reducing the thickness of the other bearing (41a) the further from the circumferentially central position and towards an end surface (51), the thickness of the end surface (51) is set as the first thickness. By reducing the thickness of the one bearing (42a) the further from the circumferentially central position and towards an end surface (61), the thickness of the end surface (61) is set as the second thickness. The first thickness and the second thickness are made equal.
This slide bearing (2) comprises: a bearing body (20): a radial bearing portion (21F) which is positioned on the inner peripheral surface of the bearing body (20); a thrust bearing portion (22F) which is positioned at the end surface in the axial direction of the bearing body (20); dampers (23F, 24F) which are positioned on the outer peripheral surface of the bearing body (20); a barrier portion (33) positioned on the outer peripheral surface of the bearing body (20); and an oil hole (30) having an inlet (300) which opens onto the barrier portion (33) and/or the outer peripheral surface of the bearing body (20) and an outlet (301) which opens onto the inner peripheral surface of the bearing body (20). The inlet (300), at least part of the barrier portion (33) and the dampers (23F, 24F) are arranged, in this order, from the inside in the axial direction to the outside in the axial direction. An outlet (906) of an upstream-side oil path (905) is connected with the outside in the radial direction of the inlet (300). The axial direction outer edge (H) of the outlet (906) is positioned at the same position as the axial direction outer edge (F) of the barrier portion (33) or further to the inside in the axial direction than the axial direction outer edge (F).
Provided is a technique for reducing adhesion in a slide bearing. This aluminum alloy for a slide bearing contains 0 mass% to 10.0 mass% Sn and 0 mass% to 5.0 mass% Si, contains 0 mass% to 2.0 mass% Cu as a solid solution strengthening component, contains as a precipitation strengthening component at least one component from among 0.05 mass% to 0.35 mass% Cr, 0.05 mass% to 1.5 mass% Mn, and 0.05 mass% to 0.3 mass% Zr, and contains 2.3 mass% to 6.0 mass% Ag, a portion of which is in solid solution and the remainder of which is precipitated Ag, and the remainder of the aluminum alloy comprises unavoidable impurities and Al.
[Problem]To provide a technology capable of reducing the probability of generating a Cu-Sb compound and peeling between layers in an overlay. [Solution]This sliding member is provided with an overlay formed by using a plating film of a Bi-Sb alloy, the sliding member comprising: a lining formed of an Al alloy; a first intermediate layer which has Cu as a main component and is laminated on the lining; and a second intermediate layer joining the first intermediate layer and the overlay.
A sliding member according to one embodiment of the present invention comprises: a base material that has a shape having a surface which supports a counterpart member, and from which a metal sintered layer is not exposed; and a resin coating layer which is formed on the inner circumferential surface, and which has a thickness of more than 20 μm.
[Problem] A technique is provided which makes it possible to achieve a suitable degree of wear resistance in a resin coating layer. [Solution] This sliding member is provided with a base layer and a resin coating layer formed on the base layer. The resin coating layer comprises a polyamide-imide resin as a binder, barium sulfate particles, molybdenum disulfide particles, and unavoidable impurities, and is configured from multiple coating layers obtained by coating one layer on another; the hard particle content is different in each of the multiple coating layers.
[Problem] To provide a technology which enables a sliding member to exert high welding resistance even with scratches. [Solution] A sliding member according to the present invention is provided with a base layer and a resin coating layer that is formed on the base layer; and this sliding member is configured such that the resin coating layer is composed of a polyamide imide resin that serves as a binder, barium sulfate particles, molybdenum disulfide particles and unavoidable impurities, said molybdenum disulfide particles having an average particle diameter that is from 1.0 to 2.8 times (inclusive) the average particle diameter of the barium sulfate particles.
[Problem] To provide a technology whereby high seizure resistance can be exhibited even when scratches have been formed. [Solution] This sliding member comprises a base layer and a resin covering layer formed on the base layer, the resin covering layer being composed of a polyamide-imide resin serving as a binder, barium sulfate particles having an average particle diameter of at least 0.3 μm and less than 0.7 μm, molybdenum disulfide particles, and unavoidable impurities.
[Problem] To provide a technique that can reduce the size of surface irregularities. [Solution] This sliding member is provided with a base layer and a resin coating layer formed on the base layer. The resin coating layer comprises a polyamide-imide resin as a binder, barium sulfate particles, molybdenum disulfide particles, and unavoidable impurities, and is configured from multiple coating layers obtained by coating one layer on another; the film thickness of the outermost of the multiple coating layers is less than or equal to 4 μm.
[Problem] To provide technology that makes it possible to achieve high seizing resistance even when scratches are formed. [Solution] A sliding member according to the present invention is provided with a base layer and a resin coating layer formed on the base layer. The resin coating layer comprises: a polyamide-imide resin serving as a binder; molybdenum disulfide particles; barium sulfate particles having a total volume that is 0.35-0.8 times the total volume of the molybdenum disulfide particles; and unavoidable impurities.
Provided is a sliding bearing that can improve contact with a holder on a bearing rear surface and improve material yield. This sliding bearing 1 comprises a pair of upper and lower half split members 2, 3 which are formed by bisecting a cylinder in a direction parallel to the axial direction thereof, the sliding bearing having hardened sections 25 on the end faces 2c, 2d of the upper half split member 2 in the cylinder axial direction and hardened sections 35 on the end faces 3c, 3d of the lower half split member 3 in the cylinder axial direction. The hardened sections 25, 35 are laser modified sections K in which the properties of the material have been changed by the thermal influence of a laser.
The present invention provides a sliding member provided with an overlay capable of realizing good fatigue resistance while preventing peeling between layers. The present invention is a sliding member provided with an overlay formed by a Bi and Sb alloy plating film, wherein the overlay comprises Bi, Sb, and unavoidable impurities, and the concentration of Sb in the surface of the overlay is 0.92% by mass to 13% by mass.
Provided is a sliding bearing having an improved circularity and having achieved an increase in contact area with respect to a holder. The sliding bearing 1 comprises a pair of an upper halved member 2 and a lower halved member 3 which are portions of a cylinder halved in parallel to an axial direction. The sliding bearing has an oil hole 24 penetrating therethrough in a direction orthogonal to the axial direction of the cylinder. An inner peripheral portion 24a of the oil hole 24 has formed a laser-melted portion 25 which is an area in which a change in property in comparison to the original material has been caused by the thermal influence of laser.
Provided is a sliding member that can exhibit an anti-wear effect brought about by Si particles. The present invention is a sliding member including 7.0 to 13.0mass% inclusive of Sn, 6.5 to 12.0mass% inclusive of Si, 0.5 to 3.0mass% inclusive of Cu, and unavoidable impurities, wherein the remainder includes an aluminum alloy layer formed from Al. Si particles are dispersed in the aluminum alloy layer. The Vickers hardness of the matrix is 40 to 60HV inclusive. The load resistance value, which is the product of multiplying the Vickers hardness of the matrix and the volume concentration and average surface area of the Si particles, is 0.00001 to 0.00029N inclusive.
F16C 33/12 - Structural compositionUse of special materials or surface treatments, e.g. for rust-proofing
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
[Problem] To provide a sliding member equipped with an overlay such that good fatigue resistance can be achieved while preventing peeling between layers. [Solution] A sliding member is provided with an overlay formed of a Bi-Sb alloy film, and is characterized in that the concentration of Sb in the overlay increases with depth from the surface thereof.
[Problem] To provide a sliding member which is provided with an overlay that enables the achievement of good fatigue resistance, while preventing ply separation. [Solution] A sliding member which is provided with an overlay that is formed of an alloy plating film of Bi and Sb, and which is configured such that the overlay is bonded to a lining that is formed from a copper alloy, with an intermediate layer that is mainly composed of Ag being interposed therebetween.
A thrust washer of one embodiment includes: a washer body that is annular and that has a first thrust surface and a second thrust surface which receive a thrust load; and a tapered section formed in the first thrust surface and/or the second thrust surface. In a direction perpendicular to the thrust surfaces, the washer body has a wave shape the high-point to low-point height difference of which is larger than that of the tapered sections.
A halved bearing 11 has a recess 112a, a recess 112b, and a recess 112c that penetrate from an outer circumferential surface to an inner circumferential surface, and a washer 12 has a protrusion 122a, a protrusion 122b, and a protrusion 122c on an inner circumferential surface side. While the halved bearing 11 is in a bent condition, the washer 12 is shifted to the outer circumferential surface side thereof, the protrusion 122b is inserted into the recess 112b, the protrusion 122a is matched to the location of the recess 112a, and the protrusion 122c is matched to the location of the recess 112c. Then, when the halved bearing 11 that was bent is returned to a pre-bending condition, the protrusion 122a settles into the recess 112a, and the protrusion 122b settles into the recess 112b. Even if an axial direction force acts on a slide bearing 10, the protrusion 122a, the protrusion 122b, and the protrusion 122c will catch on the recess 112a, the recess 112b, and the recess 112c, and thus the washer 12 and a washer 13 will not detach from the halved bearing 11.
The present invention addresses the problem of suppressing irregular abrasion on a resin coating layer. A swash plate according to one embodiment has: a base material having an annular shape with a surface facing a mating material; a plurality of grooves provided on the surface and extending, over the entire circumference of the annular shape, in a direction crossing the direction of sliding contact with the mating material; and a resin coating layer formed on said surface and forming a sliding contact surface with the mating material.
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
F16C 17/04 - Sliding-contact bearings for exclusively rotary movement for axial load only
F16C 33/20 - Sliding surface consisting mainly of plastics
[Problem] To provide a sliding member and a sliding bearing which are capable of improving fatigue resistance. [Solution] Provided is a sliding member in which a coating layer is laminated on a base layer, wherein the coating layer comprises: Bi or Sn as a first metal element; a second metal element which is harder than said first metal element and forms an intermetallic compound with said first metal element; C; and inevitable impurities.
[Problem] To provide a technology with which good wear resistance can be achieved using a simple structure. [Solution] A sliding member and a slide bearing in which a coating layer with a surface for sliding with respect to a mating material is formed on a base layer, wherein: the base layer is formed from a hard material that is harder than the coating layer; and in an evaluation area of the coating layer in which the distance from the interface with the base layer is 1 μm to 2 μm, the average concentration of diffused components of the hard material that have diffused from the base layer is at least 4 wt%.
A resin material for sliding members according to one embodiment of the present invention is composed of a polyimide resin in an amount of 80% by volume or more, graphite and a hard substance in an amount of from 9.5% by volume to 20% by volume (inclusive) in total, and a silane coupling agent in an amount of 0.1% by weight or more relative to the polyimide resin, with the balance being made up of unavoidable impurities.
This slide bearing, which is formed into a cylindrical shape and which has an inner peripheral surface that slides over a shaft, has, in the inner peripheral surface, first grooves (20A, 20B) of which the extension direction has a circumferential direction component, and at least two second grooves (21A, 21B, 21C, 21D) which branch from the first grooves and of which the extension direction has an axial direction component at least within a range predetermined from the first grooves. A predetermined range of the second grooves, which begins at the distal ends on the sides opposite the first-groove sides, gradually decreases in width or depth toward the distal ends.
Provided are: a washer capable of being manufactured with an increased material yield; and a washer manufacturing method. This washer is provided with: a first washer piece 11 formed in a circular arc shape and having formed thereon a first fitting section 30 which protrudes from one end of the first washer piece 11 in the circular arc direction; and a fourth washer piece 14 having formed therein a second fitting section 40 recessed from one end of the fourth washer piece 14 in a circular arc direction and fitted to the first fitting section 30. The first fitting section 30 and the second fitting section 40 are fitted to each other such that the movement of the first and second fitting sections 30, 40 toward and away from each other in the circular arc direction is restricted. One of the first fitting section 30 and the second fitting section 40 is provided with a staked section 36 formed such that the side surface of the one of the first and second fitting sections is pressed into the side surface of the other fitting section, and the one of the fitting sections is affixed to the other fitting section by the staked section 36.
Provided is a turbocharger in which it is possible to minimize leaking of lubricating oil toward a compressor impeller. A turbocharger (1) is provided with: a rotating shaft (50) linking a compressor impeller (51) and a turbine impeller (52); a retainer (60) disposed between the compressor impeller (51) and the turbine impeller (52); a deflector (61) having a deflector main body (610) that is arranged in parallel with the turbine-impeller (52) side of the retainer (60) and that has a through-hole (610a) through which the rotating shaft (50) is inserted, and a tongue part (611) that extends from the lower edge of the deflector main body (610); a seal chamber (A) sectioned between the retainer (60) and the deflector (61); and a discharge port (B) that is sectioned between the tongue part (611) and the retainer (60) and that discharges lubricating oil from the seal chamber (A). The deflector main body (610), which is disposed between the through-hole (610a) and the discharge port (B), has a leak hole (610b) through which the seal chamber (A) and a space (901b) on the turbine-impeller (52) side of the seal chamber (A) communicate.
A halved bearing (10) according to an embodiment comprises: a semi-cylindrical bearing body (19) having an inner circumferential surface (12) that slides against a counterpart shaft; and a first groove (111) formed in the inner circumferential surface (12) along a circumferential direction of the inner circumferential surface (12). In a cross section of the bearing body (19) passing through the first groove (111) and being parallel to the circumferential direction, an angle θ formed between a line connecting an end, on the inner circumferential surface side, of a mating surface on the downstream side in the rotating direction of the counterpart shaft and a center of an arc forming an outer circumferential surface (11) and a line connecting the center and an end, in the circumferential direction, of the first groove (111) on the upstream side in the rotating direction of the counterpart shaft satisfies 90°≤θ≤105°.
A halved bearing (10) according to an embodiment comprises: a semi-cylindrical bearing body (19) having an inner circumferential surface (12) that slides against a shaft; and a first groove (111) formed in the inner circumferential surface (12) along a circumferential direction of the inner circumferential surface (12). In a cross section of the bearing body (19) passing through the first groove (111) and being parallel to the circumferential direction, an angle θ formed between a line connecting an end, on the inner circumferential surface (12) side, of a mating surface on the downstream side in the rotating direction of the shaft and a center of an arc forming an outer circumferential surface (11) and a line connecting the center and an end, in the circumferential direction, of the first groove (111) on the upstream side in the rotating direction of the shaft satisfies 30°≤θ≤60°.
Provide is a washer manufacturing method that inhibits reduction of a sliding area. This method comprises: a preparing step for preparing a plate-like member (N); a cutting step for cutting the plate-like member (N) by means of laser (L2) to obtain longitudinal members (N1); and a forming step for obtaining a circular arc-shaped washer by using each longitudinal member (N1). The width of the plate-like member (N) is equal to the width, in the longitudinal direction, of the longitudinal member (N1). The cutting step is for cutting the plate-like member (N) from one end to the other end in the width direction to obtain the longitudinal member (N1). The forming step is for deforming the longitudinal member (N1) into a circular arc shape such that the cut surfaces of the longitudinal member (N1) form an outer circumferential surface and an inner circumferential surface.
A washer (31) has: a washer body (319) having a thrust surface (311), back surface (312), a through-hole formed from the thrust surface (311) to the back surface (312), and an inner peripheral surface (314) on the hole side; and grooves (3141) that are formed in the inner peripheral surface (314) and that are connected with at least the thrust surface (311).
This resin composition has: a binder resin formed using a thermosetting resin; and additives dispersed in the binder resin. The additives include polytetrafluoroethylene (PTFE) and at least either graphite or MoS2. The average particle diameter of each additive is less than 10 µm. The average particle diameter for the PTFE is greater than the average particle diameter for the graphite and MoS2.
This sliding member has a base material and a coating layer formed upon the base material and formed using a resin composition having (A)–(C). The surface roughness of the coating layer after a sliding test is less than the surface roughness prior to the sliding test. (A) A binder resin including polyamideimide (B) PFTE dispersed in the binder resin (C) At least either graphite or MoS2 dispersed in the binder resin
C10M 161/00 - Lubricating compositions characterised by the additive being a mixture of a macromolecular compound and a non-macromolecular compound, each of these compounds being essential
Provided is a vane pump capable of suppressing the sudden opening of a reed valve. Thus, a vane pump (1) is equipped with: a housing (2) having a circumferential wall section (200), a floor wall section (201), and a pump chamber (A); a rotor (3) capable of rotating and positioned in the pump chamber (A); a vane (4) which partitions the pump chamber (A) into a plurality of operating chambers (A1, A2) and is provided on the rotor (3) so as to be capable of sliding in the radial direction; and a reed valve (5) for opening and closing a discharge hole (201a) in the floor wall section (201). The position where the sliding direction of the vane (4) relative to the rotor (3) reverses from radially outward to radially inward is a reference position (θ1), and the section on the discharge hole (201a) side from the reference position (θ1) in the pump chamber (A) is the discharge section (AD). A pressure relief groove (201b) is positioned in the section of the floor wall section (201) that corresponds to the discharge section (AD), while maintaining a gap (E) between said groove and the circumferential wall section (200). When the vane (4) overlays the pressure relief groove (201b), the pair of operating chambers (A1, A2) on both sides of the vane (4) in the direction of rotation are connected to one another by the pressure relief groove (201b).
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
The present invention addresses the problem of providing a vane pump capable of minimizing noise. Thus, a vane pump (1) is equipped with: a housing (2) having a circumferential wall section (200), a floor wall section (201), and a pump chamber (A); a rotor (3) capable of rotating and positioned in the pump chamber (A); a vane (4) which partitions the pump chamber (A) into a plurality of operating chambers (A1, A2) and is provided on the rotor (3) so as to be capable of sliding in the radial direction; and a reed valve (5) for opening and closing a discharge hole (201a) in the floor wall section (201). The position where the sliding direction of the vane (4) relative to the rotor (3) reverses from radially outward to radially inward is a reference position (θ1), and the section on the discharge hole (201a) side from the reference position (θ1) in the pump chamber (A) is the discharge section (AD). A pressure relief groove (201b) is positioned in the section of the floor wall section (201) that corresponds to the discharge section (AD), while retaining a gap (E) between said groove and the circumferential wall section (200). When the vane (4) overlays the pressure relief groove (201b), the pair of operating chambers (A1, A2) on both sides of the vane (4) in the direction of rotation are connected to one another by the pressure relief groove (201b).
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 29/12 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
A half bearing 10 has a groove 111 and a groove 112 that are provided on the inner circumferential surface 12 side. These grooves 111, 112 run in a circumferential direction of the inner circumferential surface, and retain lubricant oil therein. Among the circumferential ends of the groove 111, the one (the end at the crash relief 14 side) situated on the downstream side in the rotational direction of a shaft is spaced away from the crash relief 14 so as not to interfere with the crash relief 14. Among the circumferential ends of the groove 112, the one (the end at the crash relief 14 side) situated on the downstream side in the rotational direction of the shaft is also spaced away from the crash relief 14 so as not to interfere with the crash relief 14.
A half bearing 10 has a groove 111 and a groove 112 that are provided on the inner circumferential surface 12 side so as to run in a circumferential direction of the inner circumferential surface. Among the circumferential ends of the groove 111, the one at the upstream side in the rotational direction of a shaft is positioned at a deviation angle θ1 of 135° when the deviation angle θ1 is defined to be an angle formed between a virtual line L1 that connects an inner circumferential-side end of a mating surface 16 and an original point P1 of an outer circumferential surface and a virtual line L2 that connects the position P2 of a circumferential end of the groove 111, the end being located at the upstream side in the shaft rotational direction, and the original point P1 of the outer circumferential surface. Further, among the circumferential ends of the groove 112, the end at the upstream side in the shaft rotational direction is positioned at a deviation angle θ2 of 135° when the deviation angle θ2 is defined to be an angle formed between the virtual line L1 that connects the inner circumferential-side end of the mating surface 16 and the original point P1 of the inner circumferential surface and a virtual line L3 that connects the position P3 of a circumferential end of the groove 112, the end being located at the upstream side in the shaft rotational direction, and the original point P1 of the outer circumferential surface.
Provided are an electric actuator and an electric wastegate valve system with which a load placed on an internally threaded portion of a rotary shaft can be reduced. The electric actuator is equipped with: a motor unit 100 having a rotary shaft 123 (rotor 120) in which an internally threaded portion 123a is formed; a first shaft 210, which has an externally threaded portion 212 that screws together with the internally threaded portion 123a of the rotary shaft 123, and moves linearly in the axial direction with respect to the rotary shaft 123 in conjunction with rotation of the rotary shaft 123; and a second shaft 220, which is coupled to the first shaft 210 so as to be capable of relative movement within a prescribed range in the axial direction.
Provided is a compressor shoe capable of improving seizure resistance. The compressor shoe is provided with: a first sliding surface (51) in sliding contact with a piston (4); a second sliding surface (52) in sliding contact with a inclined plate (3); and a recess part (53) formed in the second sliding surface (52), wherein, when a vertically cut cross-section is shown such that the magnification in the height direction is 1000 and the magnification in the radial direction is 10, a connecting portion (55) between the second sliding surface (52) and the recess part (53) is formed in a round shape having a radius R2 greater than 5 mm.
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
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
A vane pump (1) is provided with: a rotor (3) comprising a housing (2) having a pump section (20A) and a cylindrical section (20B), a rotor main body (30) that supports a vane (4) arranged in the pump chamber (A) of the pump section (20A), and a shaft section (31) arranged inside of the cylindrical section (20B); and an oil path (L1) for supplying lubricating oil to the pump chamber (A). The oil path (L1) comprises: a first segment (203) passing through the cylindrical section (20B) in the radial direction; a second segment (310) that is arranged in the shaft section (31) and that is connected to the first segment (203); and an opening/closing section that is arranged on the border of the first segment (203) and the second segment (310) and that cyclically opens and closes the oil path (L1) together with rotation of the rotor (3).
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 25/02 - Adaptations for special use of pumps for elastic fluids for producing high vacuum
A vane pump (1) is provided with: a rotor (3) comprising a housing (2), a rotor main body (30) that supports a vane (4) in a pump chamber (A), and a shaft section (31) arranged inside of a cylindrical section (20B); and an oil path (L1) for supplying lubricating oil to the pump chamber (A). The oil path (L1) comprises: a first segment (203) passing through the cylindrical section (20B) in the radial direction; a second segment (310) that is arranged in the shaft section (31) and that is connected to the first segment (203); third segments (204a, 301a, 206a) that are connected to the second segment (310), that extend along the border between the housing (2) and the rotor (3), and that open into the pump chamber (A); and an opening/closing section (P1) that is arranged on the border of the first segment (203) and the second segment (310) and that cyclically opens and closes the oil path (L1) together with rotation of the rotor (3). The third segments (204a, 301a, 206a) are at least partially arranged in the rotor (3).
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
The present invention addresses the problem of providing a vane pump (1) configured so that the durability of a coupling (5) can be ensured. The vane pump (1) is provided with: a rotor (3) having a rotor-side engagement protrusion (311); and a coupling (5) mounted between the rotor (3) and a camshaft (95) which has a camshaft-side engagement recess (950). The direction of the rotation axis (X) of the rotor (3) is defined as an axial direction, and the direction of rotation of the rotor (3) is defined as a rotational direction (θ). The coupling (5) has: a coupling body (50); an engagement recess (51) formed in the outer peripheral surface of the coupling body (50) and engaging with the rotor-side engagement protrusion (311); and an engagement protrusion (52) protruding in the axial direction from the coupling body (50) and engaging with the camshaft-side engagement recess (950). The vane pump (1) is provided with durability sections (51c, 54, 55) for preventing a deterioration in the durability of the coupling (5) caused by transmission of rotational force.
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 25/02 - Adaptations for special use of pumps for elastic fluids for producing high vacuum
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
A lead valve (5) is provided with a valve (50) having a free part (501) capable of elastic deformation, a stopper (51) that restricts the deformation of the free part (501), a seat member (2) having a seat part (221) sealed in by the free part (501), and a fastening member (52) that secures the valve (50) and the stopper (51) to a securing hole (201a) of the seat member (2). When the valve is closed, the portion where the free part (501) and the seat part (221) come into contact is a contact part (C), and the portion where said parts do not come into contact is a non-contact part (D). The portion of the seat part (221) that is nearer to a center of gravity (A) than is a center of gravity (B) is a base part (221a), and the portion of the seat part (221) that is farther from the center of gravity (A) than is the center of gravity (B) is a distal end part (221b). The contact part (C) seals a valve hole (201b) through the entire periphery. The non-contact part (D) is disposed at least on the distal end part (221b). The surface area of the contact part (C) is smaller on the distal end part (221b) than on the base part (221a).
F16K 15/16 - Check valves with flexible valve members with tongue-shaped laminae
F04C 2/344 - Rotary-piston machines or pumps having the characteristics covered by two or more of groups , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 15/06 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Provided is a washer manufacturing method capable of improving material yield. The method is provided with a preparation step S1 for preparing a sheet material 1, a first cutting step S12 for obtaining a roughly circular arc-shaped first thrust washer 10 by cutting the material 1, and a second cutting step S13 for obtaining, by cutting the material 1, a second thrust washer 10 from a portion that contacts the portion from which the first thrust washer 10 was cut.
A mating member 8a rotates in the direction of an arrow D2. A washer 1 rotates in the direction of an arrow D1 in accompaniment with the rotation of the mating member 8a. In the gap between a tapered section 12a and the mating member 8a, a lubricant flows in a -θ direction viewed from the washer body, and the lubricant flows into a region Ra that gradually becomes narrower in the -θ direction. A "wedge effect" occurs thereby, and the pressure increases in the gap between a first surface 10a and the mating member 8a. In the gap between a tapered section 12b and a mating member 8b, the lubricant flows in a +θ direction viewed from the washer body, and the lubricant flows into a region Rb that gradually becomes wider in the +θ direction. An effect that is opposite the "wedge effect" occurs thereby, and the pressure decreases in the gap between a second surface 10b and the mating member 8b.
A washer 1 has a washer main body that slides against another member by a first surface 10a and a second surface 10b of a plate formed into an annular shape. The first surface 10a is provided with a land part 11a, a taper part 12a, and an oil groove 13a. The land part 11a is a portion extending along the first surface 10a. The taper part 12a is a portion inclined so as to decrease in height from both sides of the land part 11a in the circumferential direction of the washer 1. The oil groove 13a is a groove facing the thinnest portion of the taper part 12a. The oil groove 13a and the taper part 12a on both circumferential-direction sides are sections recessed further in a -z direction is than the land part 11a, and are included in a first recess Ua. The second surface 10b has a second recess Ub provided to a different position than the first recess Ua in the circumferential direction. A notched part is provided in an inner peripheral surface 17 of the washer 1.
The present invention provides a swashplate compressor wherein problems arising from an area where a rotor, a swashplate, and a transmission mechanism come into contact with each other are remedied. The present invention is provided with: a rotor 30 which is fixed on a rotary shaft 20; a swashplate 40 which is coupled to a piston 50 and tiltably supported on the rotary shaft 20; a transmission mechanism 100 which rotates the swashplate 40 in conjunction with the rotation of the rotor 30, and which guides the tilting of the swashplate 40; and a coating part which covers the surface of the area where the rotor 30, the swashplate 40, and the transmission mechanism 100 come into contact with each other.
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
60.
SHOE AND SWASHPLATE TYPE COMPRESSOR EQUIPPED WITH SAID SHOE
Provided is a shoe with which it is possible to suppress deformation of a slid member. This shoe is provided with: a first sliding surface 210 which slides along a concave curved surface of a piston (first movable member); and a second sliding surface 220 which is formed in such a way as to bulge out on the opposite side to the first sliding surface 210, and which slides along a flat surface of a swashplate (second movable member). The second sliding surface 220 is provided with: an outer peripheral portion 221 in the shape of a curved surface, provided along the outer periphery of the second sliding surface 220; and a central portion 222 which is provided continuously with the outer peripheral portion 221, in the center of the second sliding surface 220, and which is formed in such a way that the radius of curvature thereof is greater than that of the outer peripheral portion 221.
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
Provided is a valve device capable of properly performing switching between a valve-opened state and a valve-closed state. For the valve-closed state, a partitioning wall through-hole 131 is brought into a closed state by a solenoid part 160, and a total forward load, which acts on a valve 140 by a spring and the pressure of oil in a hydraulic control space R1a, is caused to be greater than a rearward load, which acts on the valve 140 by the pressure of oil flowing in through an inflow hole 121, so that the valve 140 is moved forward so as to allow an outflow hole 112 to be closed. For the valve-opened state, the partitioning wall through-hole 131 is brought into an opened state by the solenoid part 160, and the rearward load, which acts on the valve by the pressure of oil flowing in through the inflow hole 121, is caused to be greater than the total forward load, which acts on the valve 140 by the spring and the pressure of oil in the hydraulic control space R1a, so that the valve 140 is moved rearward so as to allow the outflow hole 112 to be opened. Four front-wall inflow holes 144 are provided.
F16K 31/40 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
F01M 1/08 - Lubricating systems characterised by the provision therein of lubricant-jetting means
F01M 1/16 - Controlling lubricant pressure or quantity
F01P 3/08 - Cooling of piston exterior only, e.g. by jets
The present invention addresses the problem of providing a vane pump configured so that an increase in the number of parts can be suppressed and so that the sealing performance between sliding surfaces can be easily ensured. A vane pump (1) comprises: a housing (2) having a pump chamber (C); a rotor (3) having a cylindrical peripheral wall (300) which is accommodated within the pump chamber (C) and which has a pair of vane holding grooves (300a) facing each other in the diameter direction, the rotor (3) also having an oil chamber (A) defined inside the peripheral wall (300) and accumulating lubricating oil (O); and a vane (4) held by the pair of vane holding grooves (300a) and moving across the oil chamber (A) in the diameter direction. The inner surface of the housing (2) and/or the end surface of the peripheral wall (300), which defines a sliding interface (B) between the end surface and the inner surface, has oil grooves (300b-300h) for the lubricating oil (O).
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 25/02 - Adaptations for special use of pumps for elastic fluids for producing high vacuum
F04C 27/00 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
Provided is a valve device wherein a seat and a seal ring can be prevented from wearing. Provided is a valve device comprising: a seat 20 having a flow passage 21 formed therein so as to extend therethrough; a valve 30 which is disposed in the flow passage 21 so as to be capable of pivoting and which pivots to open and close the flow passage 21; a seal ring 40 fitted to the outer periphery of the valve 30; and a notch pin 60 which, when the valve 30 pivots to a position where the valve 30 closes the flow passage 21, increases the diameter of the seal ring 40 to seal the gap between the seat 20 and the seal ring 40.
The purpose of the present invention is to provide a method for manufacturing an end plate of a pump whereby sagging can be easily removed. The method for manufacturing the end plate (21) of the pump (1) includes a punching step of punching, out of a sheet material (B), a work (W) that is to provide the end plate (21) including a mounting seat (213) through which a fastener (90) is passed. The manufacturing method further includes a pressing step of forming a press-trace face (212) by pressing an outer edge of an outer face (210a), where, of upper and lower faces of the punched-out work (W), the face farther from a sagging (F) formed at a cut-face is the outer face (210a), and a face closer to the sagging (F) is an inner face (211a). The method is characterized in that a fastened section (212a) has a radial width (Ra) which is shorter than a radial width (Rb) of a non-fastened section (212b), where, of the press-trace face (212), the fastened section (212a) is a section disposed along an outer edge of the mounting seat (213), and the non-fastened section (212b) is a section other than the fastened section (212a).
F04C 18/344 - Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups , , , , , or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group or and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
A slide bearing has a semi-cylindrical bearing body having a sliding surface that slides against an axially extending shaft, a circumferentially extending groove formed in the sliding surface nearer to at least one end side relative to the axial center, and a bottom wall part which is an area on the axially outward side of the groove and of which the height from the bottom surface of the groove is lower than the sliding surface.
A swash plate 3 which is a sliding member, the swash plate 3 comprising a base 31 and a coating layer 32 formed on the base 31. The coating layer 32 comprises a binder resin 321 and a solid lubricant 322 dispersed in the binder resin 321. In the coating layer 32, the degree of exposure of the solid lubricant 322 in the sliding surface is 7% or higher.
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
C10M 169/04 - Mixtures of base-materials and additives
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
[Problem] To provide a feature that makes it possible to achieve conformability and fatigue resistance. [Solution] A sliding member and a sliding bearing have formed thereon, on a base layer, a coated layer having a mating-material sliding surface. The coated layer is formed from a soft material that is more supple than the base layer, and on the sliding surface, crystal grains made of the soft material with an average grain diameter of no less than 0.1μm and no greater than 1μm are aggregated in a lump shape, thereby forming an aggregate having an average diameter of no less than 3μm and no greater than 30μm.
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
A half bearing 11 has: a bearing body 111 that has a semicircular cylindrical shape having mating surfaces 114 and 115 brought into contact with a half bearing 12; and an oil groove 116 provided in a sliding surface and extending in the rotational direction of the shaft. The oil groove 116 has a curved shape in a cross section parallel to the axial direction, the width of the oil groove 116 is uniform within the range of at least ±30° in a cross section perpendicular to the axial direction, and the width of the oil groove 116 is narrower than the width within this range at at least the downstream side of the rotational direction in the area outside the range.
Provided is a washer production method that enables improving material yield rate. This method comprises: a preparation step for preparing a long member N1 provided with upper-side ridges 20 and lower-side ridges 40 that are formed in the upper-side surface and/or the lower-side surface, and provided with upper-side troughs 30 and lower-side troughs 50 that are formed continuously leftward and rightward to the upper-side ridges 20 and the lower-side ridges 40, wherein protrusions 33, 53 are formed in the upper-side troughs 30 and the lower-side troughs 50; and a transformation step for deforming the long member N1 such that the upper-side surface and the lower-side surface have a circular-arc shape as viewed from an anterior direction thereof.
Provided is a compressor swashplate that is capable of suppressing wear of a coating layer. A swashplate 3 is provided with a flat plate-like base material, and a coating layer 20 which is formed on the surface of the base material and which has projected sections 22 formed linearly. The swashplate is formed so as to satisfy the following equations when a planar part formed in a prism is pushed against the coating layer 20 with pressure of 30 MPa: 0.01≤B≤0.06 ... (1), and 10≤S≤40 ... (2). Here, B represents the width (mm) of a surface in which the projected sections 22 come into contact with the planar part, and S represents the proportion (%) of the sum total of areas Si of contact surfaces (total area of surfaces in which the projected sections 22 come into contact with the planar part) with respect to a reference area (area of portions of coating layer 20 against which the planar part is pushed).
F04B 27/12 - Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders having plural sets of cylinders or pistons
F16C 17/10 - Sliding-contact bearings for exclusively rotary movement for both radial and axial load
F16C 33/12 - Structural compositionUse of special materials or surface treatments, e.g. for rust-proofing
A swash plate (3), which is a sliding member, comprises a base material (31), and a coating layer (32) of at least 10 µm thickness formed on the base material (31). The coating layer (32) comprises a binder resin (321) and a c-axis-orienting solid lubricant (322) that is dispersed in the binder resin (321). The relative c-axis intensity ratio of the solid lubricant (321) in the coating layer (32) is at least 80%.
C10M 107/44 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
C10M 111/04 - Lubricating compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups , each of these compounds being essential at least one of them being a macromolecular organic compound
F16C 33/20 - Sliding surface consisting mainly of plastics
C10N 30/06 - OilinessFilm-strengthAnti-wearResistance to extreme pressure
C10N 50/02 - Form in which the lubricant is applied to the material being lubricated dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
C10N 80/00 - Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal
Provided is a washer which can be obtained with an improved material yield. A washer is provided with: an inner peripheral surface 11 formed in a circular arc shape; an outer peripheral surface 12 formed in a circular arc shape on the outside radially of the inner peripheral surface 11 so as to be concentric with the inner peripheral surface 11; and outer peripheral cutouts (left outer peripheral cutout 15L and right outer peripheral cutout 15R) formed at the positions of the outer peripheral surface 12, which correspond to end portions (first end portion D1 and second end portion D2) of the inner peripheral surface 11, and formed so as to have the same shape as the external shape of the corresponding end portions of the inner peripheral surface 11.
A bearing 10 comprises: a half bearing member having an inner peripheral surface against which slides a corresponding shaft, and a plurality of recesses provided to a first end surface in the axial direction of said opposing shaft; a first flange member having a plurality of protrusions provided at positions corresponding to the plurality of recesses provided to the first end surface; and a plurality of crimping marks respectively formed in the periphery of each recess when crimping the recess with the plurality of protrusions on the first end surface engaged with the plurality of recesses in order to fix the first flange member to the half bearing member. With regard to the crimping marks that are formed on both sides of at least one of the plurality of recesses, the volume of the deformed part of the crimping mark positioned to the outside in the circumferential direction when viewed from the radial direction of the opposing shaft, is smaller than the volume of the deformed part of the crimping mark positioned to the inside.
F16C 17/10 - Sliding-contact bearings for exclusively rotary movement for both radial and axial load
B21D 39/03 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of sheet metal otherwise than by folding
Provided is a method for manufacturing washers, which can manufacture the washers with an improved material yield. A method for manufacturing washers comprises: a preparation step for preparing long members (N1) each provided with an upper wave-shaped section (20) and a lower wave-shaped section (30), the upper and lower wave-shaped sections (20, 30) having crests (21, 31) which are formed on the upper surface and/or the lower surface of the long member (N1), and having troughs (22, 32) continuous with the crests (21, 31) in the left-right direction; and a deformation step for deforming the long member (N1) so that the upper surface and the lower surface will have a circular arc shape in a front view.
A bearing 10 comprises: a half bearing member having an inner peripheral surface against which slides a corresponding shaft, and a plurality of recesses provided to an end surface in the axial direction of said opposing shaft; a flange member having a plurality of protrusions provided at positions corresponding to the plurality of recesses provided to the end surface; and a plurality of crimping marks respectively formed in the periphery of each recess when crimping the recess with the plurality of protrusions on the end surface engaged with the plurality of recesses in order to fix the flange member to the half bearing member. The unrestrained width of the half bearing member before crimping is at least 0.2mm longer than the width of the half bearing member after crimping.
Provided is a molding device 1 for manufacturing a molded product having an internal space that curves in a circular arc shape, said molding device comprising: a pair of metal molds 10, 20 which can be united or separated and which, when united during molded, is capable of forming a cavity C having a shape corresponding to the outside shape of the molded product; a core 30 having a shape corresponding to the inside shape of the molded product and disposed within the cavity C formed by the pair of molds 10, 20 during molding; and a rotating member 40 attached to the end of the core 30 and rotatable together with the core 30 after molding. In comparison to conventional molding devices, the molding device 1 according to the present invention can better suppress the formation of scratches in the molded product having an internal space that curves in a circular arc shape when extracting the molded product.
B22C 9/10 - CoresManufacture or installation of cores
B22D 17/22 - DiesDie platesDie supportsCooling equipment for diesAccessories for loosening and ejecting castings from dies
B29C 33/44 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
According to the present invention, a crank washer 30 is a ring-shaped flat plate that has a downwardly protruding section and is divided into an upper washer 31 and a lower washer 32 at a plane that passes through the center of the ring. Two of the crank washers 30 form a set, a surface of each of the two that is on the reverse side from a sliding surface is made to face the other, and the two are assembled with a main bearing therebetween. Other than having a rotation stop, the lower washer 32 has the same configuration as the upper washer 31. The rotation stop engages a rotation-stop groove that is provided to a housing and prevents the lower washer 32 from rotating in association with the rotation of a crank shaft. A mating-surface indent prevents mating surfaces of the lower washer 32 and the upper washer 31 from contacting a shaft during assembly. The sliding surface 320 is a surface along which a crank shaft slides, receives a thrust load, and supports the crank shaft. The crank washer 30 is formed entirely from a resin.
According to the present invention, a half-cylinder bearing 11 has a bearing main body 111 that is formed from a resin so as to have a half-cylinder shape that has an inner-circumferential surface 112 along which a counter shaft slides and an outer circumferential surface 113 that contacts a housing. The half-cylinder bearing 11 may have a structure in which a resin layer, which is formed from a resin and includes at least one portion of the inner circumferential surface, and a reinforcing layer, which is formed so as to tightly adhere to the resin layer and reinforces the resin layer, are laminated. When such is the case, the bearing main body 111 has a resin layer 1111 that includes the inner circumferential surface 112 and a reinforcing layer 1112 that is formed so as to tightly adhere to the resin layer 1111. A material that has a higher rigidity than the resin that forms the resin layer 1111 is used for the reinforcing layer 1112, which increases the rigidity of the resin layer 1111 as a result of being formed so as to tightly adhere to the resin layer 1111. The material of the reinforcing layer 1112 is, for example, a metal such as iron, aluminum, or stainless steel.
According to the present invention, a half-cylinder bearing (11) has a bearing main body (111) that is formed from a resin to have a half-cylinder shape that has an inner circumferential surface (112) along which a counter shaft slides and an outer circumferential surface (113) that contacts a housing. The half-cylinder bearing (11) may also have a structure in which a plurality of resin layers are laminated in the radial direction from a shaft center. When such is the case, the bearing main body (111) has a first layer (1111) that includes the outer circumferential surface (113) and a second layer (1112) that includes the inner circumferential surface (112). The first layer (1111) is formed from a heat-curable resin, and the second layer (1112) is formed from a thermoplastic resin. The first layer (1111) may include a fiber-reinforced resin in which fibers have been mixed with a heat-curable resin, and the second layer (1112) may include a fiber-reinforced resin in which fibers have been mixed with a thermoplastic resin.
A split bearing 11 comprises: a bearing body 111 formed with a resin into a semi-cylindrical shape having an inner circumferential face 112 that slides with a mating shaft and an outer circumferential face 113 that contacts a housing; and an oil relief and a crush relief that are formed on the bearing body 111.
Provided are a synthetic resin welded body and a manufacturing method therefor which make it possible for only a part to be welded, of an absorption-side synthetic resin component, to be easily melted during laser welding. The synthetic resin welded body is provided with: an oil passage forming member 120 (absorption-side synthetic resin component) having absorbency with respect to laser light; and a baffle plate 110 (transmission-side synthetic resin component) which is laser-welded while overlapped by the oil passage forming member 120, and which has permeability with respect to laser light. The baffle plate 110 is formed such that the laser permeability of a welding region 111 to be laser-welded to the oil passage forming member 120 is higher than the laser permeability of a non-welding region 112, which is a region other than the welding region 111.
Provided are: a welded synthetic resin body capable of inhibiting the protrusion, at undesirable positions where performance is likely to be affected, of welding burrs formed in welding parts; and a production method therefor. The present invention is provided with: a step for preparing an oil-path-forming member 120 provided with welding parts 124 having tops which form welding surfaces 124a; a step for preparing a baffle plate 110 provided with surfaces 111a to be welded; a step in which the oil-path-forming member 120 and the baffle plate 110 are disposed such that the welding surfaces 124a are in contact with the surfaces 111a to be welded; and a step in which the welding parts 124 are irradiated with a laser beam to weld together the welding surfaces 124a and the surfaces 111a to be welded. Recesses 111 are formed in the baffle plate 110 such that, when the welding surfaces 124a are disposed so as to be in contact with the surfaces 111a to be welded, grooves 140 are formed along the outer circumferential surfaces of the welding parts 124.
Provided are: a joined synthetic resin body which is capable of ensuring both flow-path sealing properties and joining strength between synthetic resin components, even if the surface areas of regions to be welded are small; and a production method therefor. The present invention is provided with: a baffle plate 110; an oil-path-forming member 120 which is in contact with the baffle plate 110; an oil path 130 which is formed between the baffle plate 110 and the oil-path-forming member 120, and in which a lubricating oil circulates; seal parts 140 which seal the periphery of the oil path 130 as a result of the baffle plate 110 and the oil-path-forming member 120 being welded together outside the oil path 130; and joining parts 150 which join the baffle plate 110 and the oil-path-forming member 120.
The present invention addresses the problem of providing a thrust sliding bearing capable of reducing frictional resistance. Provided is a crank washer (10) for supporting a load exerted in the thrust direction of a crankshaft, wherein an oil groove (16) is radially formed in a thrust receiving surface, a first resin sheet (11), a second resin sheet (12), and a third resin sheet (13) are laminated in a tapered land region TP partitioned by the oil groove (16), and the widths of the laminated first resin sheet (11), second resin sheet (12), and third resin sheet (13) in the circumferential direction gradually decrease in the direction toward the top layer.
[Problem] To prevent the rotation of a bearing without using a protrusion on the outer peripheral surface of a circular arc section of the bearing. [Solution] A bearing 10 has: a circular arc section 11, the cross-section of which, taken perpendicular to the axial direction, has a circular arc shape; a rotation prevention section 12 extending from one end of the circular arc of the circular arc section 11 and having a portion which, in a cross-section perpendicular to the axial direction, protrudes to the outside of the circle circumscribed on the circular arc section 11; and a rotation prevention section 13.
The present invention addresses the problem of providing a sliding bearing with which it is possible to obtain a friction reducing effect and to suppress the total quantity of outflow oil. Provided is a manufacturing method for a sliding bearing (1) comprising vertically-arranged half members (2), (2) that are obtained by halving a cylinder in parallel with the axial direction and that have a metal layer (21) and a lining layer (22), which is provided to the inner peripheral surface of the metal layer (21). The manufacturing method has a thin groove forming step (S30) (first step) in which a thin groove (3) is provided circumferentially to the axial direction end of the lower half member (2) at the downstream side of the rotational direction. During the thin groove forming step (S30), the depth (d) of the thin groove (3) is formed so as to be shorter than the length obtained by subtracting, from the thickness (h1) of the lining layer (22), the sum of the tolerance (a1) of the thickness of the lining layer (22) and the tolerance (a2) of the depth of the thin groove (3).
The present invention relates to a slide bearing (1) in which half members (2, 2) obtained by bisecting a cylinder in parallel to the axial direction are arranged vertically, wherein: in an axial-direction end section of the lower half member (2), a narrow groove (3) is provided along the circumferential direction on the downstream side in the rotating direction; a circumferential edge section (2a) formed so as to be lower than the surface that abuts against a crankshaft (11) is provided on the outer side of the narrow groove 3 in the axial direction; and in a cross-sectional view orthogonal to the length direction of the narrow groove (3), the bottom surface (3a) of the narrow groove (3) is formed in a curved manner. Thus, the present invention can achieve a friction-reducing effect and also suppress the total amount of effluent oil.
Provided is a sliding bearing capable of achieving a friction reduction effect and limiting a total outflow oil amount. This sliding bearing (1) has vertically disposed halved members (2)·(2) which are formed by halving a cylinder in the direction parallel to the axial direction of the cylinder, wherein narrow grooves (3) are provided on an axial end of the lower halved member (2) in a circumferential direction on the downstream side in the rotation direction; peripheral sections (2a) are formed outward from the narrow grooves (3) in the axial direction so as to be lower than a contact surface between the sliding bearing (1) and a crankshaft (11); and, when viewed in a cross-section perpendicular to the longitudinal direction of the peripheral section (2a), a chamfered section (2b) is formed at an outer edge section in the axial direction of the peripheral section (2a).
The present invention addresses the problem of providing a sliding bearing with which it is possible to suppress the total quantity of outflow oil and to obtain a friction reducing effect. Provided is a sliding bearing (1) comprising vertically-arranged half members (2), (2) obtained by halving a cylinder in parallel with the axial direction. A thin groove (3) is provided circumferentially to the axial direction end of the lower half member (2) at the downstream side of the rotational direction. An inclined part (3b), which is inclined toward the inner peripheral side when approaching the downstream side, is provided to the downstream side end, in the rotational direction, of the thin groove (3). A coating layer (23a) is provided to at least part of the inner peripheral surface of the inclined part (3b).
Provided is a slide bearing capable of achieving a friction-reducing effect and capable of suppressing the total amount of effluent oil. Disclosed is a method for producing a slide bearing (1) in which half members (2, 2) obtained by bisecting a cylinder in parallel to the axial direction are arranged vertically, each half member having a metal layer (21) and a lining layer (22) provided on the inner circumferential surface of the metal layer (21), the production method comprising a narrow groove forming step (S30) (first step) for providing, in an axial-direction end section of the lower half member (2), a narrow groove (3) along the circumferential direction on the downstream side in the rotating direction. In the narrow groove forming step (S30), the depth (d) of the narrow groove 3 is formed so as to be greater than the length found by subtracting the tolerance (a1) of the thickness of the lining layer (22) from the thickness (h1) of the lining layer (22).
The present invention addresses the problem of providing a manufacturing method for a sliding bearing and a sliding bearing with which it is possible to suppress the total quantity of outflow oil and to obtain a friction reducing effect. Provided is a manufacturing method for a sliding bearing (1) comprising vertically-arranged half members (2), (2) obtained by halving a cylinder in parallel with the axial direction. The manufacturing method has: a thin groove forming step (S30) (first step) in which a thin groove (3) is provided circumferentially to the axial direction end of the lower half member (2) at the downstream side of the rotational direction; a satin-finished surface forming step (S50) (second step) in which the surface of the thin groove (3) is shotblasted; and a coating layer forming step (S60) (third step) in which a coating layer (23) is formed on the surface of the half member (2). During the coating layer forming step (S60), a coating layer (23a) is formed on the upstream-side end and the downstream-side end of the thin groove (3).
The purpose of the present invention is to provide: a copper alloy for sliding bearings, whereby it becomes possible to prevent a primary Mn-Si crystal from causing seizure; and a sliding bearing. The copper alloy for sliding bearings and the sliding bearing according to the present invention are characterized in that the copper alloy for sliding bearing contains 25 to 48 wt% inclusive of Zn, 1 to 7 wt% inclusive of Mn, 0.5 to 3 wt% inclusive of Si, 1 to 10 wt% inclusive of Bi, and a remainder made up by unavoidable impurities and Cu, wherein the copper alloy contains, on a sliding surface thereof against a counter material, both Bi particles each having an equivalent circle diameter that is larger than an average equivalent circle diameter of primary Mn-Si crystals and Bi particles each having an equivalent circle diameter that is smaller than the average equivalent circle diameter of the primary Mn-Si crystals.
The purpose of the present invention is to provide: a copper alloy for a slide bearing for which seizure in Mn-Si primary crystals can be prevented; and a slide bearing. The copper alloy for slide bearings and the slide bearing of the present invention are characterized in that: the copper alloy for slide bearings contains 25 wt% to 48 wt% Zn, 1 wt% to 7 wt Mn, 0.5 wt% to 3 wt% Si, and 1 wt% to 10 wt% Bi, the balance being obtained from unavoidable impurities and Cu; and on the surface that is in sliding contact with the partner material, the proportion of triangles, among triangles having the closest three Mn-Si primary crystals as apices, with an area that is at least 5000 µm2 and an equivalent circle diameter that is at least 10 µm in which there are no Bi particles is not more than 20%.
Provided is a waste gate valve with which it is possible to absorb pulsation in fluid pressure as such pulsation occurs. A waste gate valve (60) in which a drive gear (70) is rotatably driven by a drive motor (55), a valve shaft (65) threaded into the drive gear (70) is made to reciprocate in an axial direction by the rotational driving of the drive gear (70), a valve (61) provided to the valve shaft (65) is moved from a valve seat (62) by the reciprocation of the valve shaft (65) to open and close a flow channel (82), a main spring (91) is provided for urging the valve (61) in a closing direction, and fluid pressure exerted on the valve (61) is transmitted as a load to the drive motor (55), wherein a damper spring (92) is provided for urging the valve (61) in an opening direction.
In order to provide a sliding bearing and a copper alloy for a sliding bearing in which an Mn-Si compound is prevented from breaking and becoming foreign matter, this sliding bearing and copper alloy for a sliding bearing contain 25-48 wt%, inclusive, of Zn, 1-7 wt%, inclusive, of Mn, 0.5-3 wt%, inclusive, of Si, and 1-10 wt%, inclusive, of Bi, wherein the balance comprises inevitable impurities and Cu, said copper alloy being characterized in that the average value for the width of Mn-Si primary crystal particles dispersed in a surface that slides against a counter shaft is 3 µm or more.
Provided is a lubricating oil supply mechanism for a turbocharger, capable of suppressing increases in the temperature of a flow control valve. A lubricating oil supply mechanism (1) of a turbocharger (6) supplies lubricating oil to a bearing (41) provided to an engine (E), the lubricating oil supply mechanism comprising a lubricating oil supply channel (a pressure-feed channel (3) and a supply channel (42)) for guiding lubricating oil to the bearing (41), a lubricating oil discharge channel (a discharge channel (43) and a return channel (7)) for guiding lubricating oil discharged from the bearing (41), and a flow control valve (100) which is provided to the lubricating oil supply channel at a position where the lubricating oil discharge channel is not overlapped, and which regulates the flow of lubricating oil by narrowing the channel through which the lubricating oil flows in the lubricating oil supply channel.
The present invention provides an oil feeding member capable of securing a wide interval between oil passages and achieving a reduction in space of the oil passages, and an engine lubricating oil supply mechanism provided with the same. An oil feeding member (100) is provided with a lubricating oil passage and a plurality of ejection ports (134) that is formed on a downstream side end portion of the lubricating oil passage and that ejects lubricating oil, having flowed through the lubricating oil passage, toward a lubricating portion, wherein the lubricating oil passage includes: an essential oil passage (150); a first upstream side branched oil passage (125) branched from the essential oil passage (150) and in which the lubricating oil being guided to two ejection ports (134a, 134b) out of the plurality of ejection ports (134) flows; and a second upstream side branched oil passage (126) branched from the essential oil passage (150) and in which the lubricating oil being guided to two ejection ports (134c, 134d) out of the plurality of ejection ports (134) flows.
Provided is an actuator in which it is possible to prevent a decrease in plate strength by hydrolysis. This invention is provided with: a diaphragm (30) for dividing the interior of a casing (20) into a negative pressure chamber (21a) and an atmospheric pressure chamber (22a); a plastic plate (40) provided in the negative pressure chamber (21a) so as to be in contact with the diaphragm (30); and an operation shaft (60) having one end connected to the plate (40) and the diaphragm (30), and the other end extending through the atmospheric pressure chamber (22a) to the exterior of the casing (20), the operation shaft (60) being capable of displacement in the axial direction in response to a deformation of the diaphragm (30). The plate (40) is cut off from the atmospheric chamber (22a) by the linkage of the operation shaft (60) to the plate (40) in the negative pressure chamber (21a) through the diaphragm (30).
F15B 15/10 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit the motor being of diaphragm type
[Problem] To provide a technique that enables the achievement of a good balance between fittability and fatigue resistance. [Solution] A sliding member and a slide bearing according to the present invention comprise a base layer on which a cover layer having a sliding surface for a counterpart member is formed. The cover layer is formed of a soft material that is softer than the base layer, and assemblies having an average diameter of from 3 μm to 30 μm (inclusive) are formed in the sliding surface by having crystal grains of the soft material having an average grain size of from 0.1 μm to 1 μm (inclusive) gather together in the form of agglomerates.
Provided are an oil-feeding member by which excess supply of lubricating oil from the oil-feeding member to a lubricated part of a valve mechanism can be prevented, and a lubricating-oil-supplying mechanism for an engine comprising the oil-feeding member. An oil-feeding member for supplying lubricating oil to a lubricated part of a valve mechanism (30) for opening/closing an intake valve (31B) and an exhaust valve (31A) of an engine (1), wherein: the oil-feeding member comprises an upper-side plate member (110) and a lower-side plate member (120) superimposed on each other, and an oil-feeding channel (102) formed by indenting the superimposed surfaces of the upper-side plate member (110) and the lower-side plate member (120); and the oil-feeding channel (102) includes a foundation oil channel (150) formed in the downstream side, and an inlet oil channel (130) formed in the upstream side, the inlet oil channel (130) having less area of lubricating oil flow than does the foundation oil channel (150).
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