Abstract: The invention provides a metal bellows type accumulator having an outer shell provided in its one end with a pressure introducing passage in an opening manner, and a metal bellows repeatedly formed peak portions directed to an outer side in a radial direction and trough portions directed to an inner side, capable of expanding and contracting in an axial direction and separating an inner chamber of the outer shell into a pressure introducing chamber communicated with the pressure introducing passage and a gas chamber charged with cushion gas. A tubular portion is provided at a position where an amplitude of vibration in a radial direction becomes maximum in the metal bellows, has a greater diameter than a maximum diameter portion of each of the peak portions and is in contactable with an inner peripheral surface of the outer shell at a predetermined width in the axial direction.

Abstract: A solenoid includes a molded coil having a hole at the center of a coil of a plurality of turns, a solenoid body having a case covering the outer perimeter of the molded coil, a movable plunger inserted in the hole, and a magnetic attraction portion disposed in a direction in which the plunger is moved and attracted by magnetic force produced by the coil, an annular plate adjacent to the coil of the molded coil opposite to the solenoid body, and a sleeve facing the magnetic attraction portion via an air gap and supporting one end of a rod connected to the plunger, in which a magnetic circuit L is formed through the magnetic attraction portion, the case, the sleeve, and the plunger, and back to the magnetic attraction portion, and the plunger has at least one outer edge extension formed by an outer edge portion extended axially.

Abstract: A displacement control valve is provided for discharging liquid refrigerant in a control chamber at startup and achieves a reduction in startup time and an improvement in operating efficiency during control of a variable displacement compressor simultaneously. The opening area between communicating holes in a third valve section and a third valve seat surface in a control area to control the flow rate or pressure in a working control chamber is set smaller than the area of auxiliary communicating passages.

Abstract: A seal structure is provided which enables a reduction in the number of components and an improvement of the stability in sliding of the seal portion or the backup ring portion. A sealing structure seals two members which move relative to each other, in which a seal portion or a backup ring portion placed between the two members and a bearing portion similarly placed between the two members are formed into an integral structure. The seal portion or the backup ring portion is integrally provided to one end portion in the axial direction or both end portions in the axial direction of the bearing portion having a cylindrical shape. The seal structure is used as a piston seal or a rod seal in hydraulic and pneumatic devices in which a piston is inserted into a shell or a cylinder tube.

Abstract: A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.

Abstract: In an embodiment, a slide component includes a circular ring-shaped stationary-side seal ring 5 fixed to a stationary side and a circular ring-shaped rotating-side seal ring 3 rotating with a rotating shaft 1, and relatively rotates respective opposed sliding faces S of the stationary-side seal ring 5 and the rotating-side seal ring 3, thereby sealing a sealed fluid present on one side in a radial direction of the sliding face relatively rotating and sliding, wherein the sealed fluid is a silicate containing fluid; and on at least either one sliding face of the stationary-side seal ring 5 and the rotating-side seal ring 3, an amorphous carbon film 10 formed by using hydrocarbon gas not containing organosilicon compound gas in a plasma CVD method is laminated. The slide component can seal a silicate containing sealed fluid to which silicate is added.

Abstract: An accumulator is provided, which is aimed at stabilization in mounting state of a damping member while diminishing the impact on a metal bellows. In an accumulator (100), a damping member (190) formed slidably at the inner circumferential surface of a pressure vessel (110) and suppressing the oscillation of a metal bellows (130) while keeping a gap between the metal bellows (130) and the inner circumferential surface of the pressure vessel (110) is mounted at at least one site of a plurality of annular valley parts of the metal bellows(130) including a plurality of annular crest parts and the plurality of annular valley parts alternately formed therein. In the damping member (190), a radially inward tip is fitted with the valley part, and a radially outward tip is longer than the crest part of the metal bellows radially and outwardly.

Abstract: A spool 220 is provided with a second land section 224 that blocks a portion between the spool 220 and the valve sleeve 210 at a position between the output port P21 and the lead-in port P22 when the spool 220 is located in a position for connecting the channel for input T1 and the channel for output T2 via the input port P10 and the output port P21 and blocking a channel leading from the channel for output T2 to the channel for discharge T3, and when the spool 220 is located in a position for connecting the channel for output T2 and the channel for discharge T3 via the lead-in port P22 and the discharge port P30 and blocking a channel leading from the channel for input T1 to the channel for output T2.

Abstract: Provided is a slide component that can prevent deposit formation on a sealing face as well as promoting circulation of a fluid on sealing faces while fulfilling both conflicting conditions of sealing and lubrication, to maintain the sealing function of the sealing faces for a long period of time. The slide component includes a pair of slide parts that relatively slide on each other, one of the slide parts being provided in a sealing face with fluid circulation grooves 10 that communicate with a high-pressure fluid side via an inlet portion and an outlet portion and are separated from a low-pressure fluid side by a land portion, the other of the slide parts being provided in a sealing face with interference grooves 15 that communicate with the high-pressure fluid side and produce pressure variations in a fluid in the fluid circulation grooves 10.

Abstract: Disclosed is a solenoid configured so that vibration and noise in energization can be reduced. The solenoid is configured to use magnetic action in energization of a coil to drive, in an axial direction, a core at least including a first magnetic resistor. The solenoid includes a shaft attached to the core, and bearings supporting both end portions of the core. The solenoid further includes a second magnetic resistor configured to generate force for moving at least the core in a radial direction by the magnetic action.

Abstract: A sealing device which can stably exhibit a sealing function and enables a reduction in the number of components as well as in a radial size of the device. The sealing device includes a metal cartridge case (110) having a case main body (111) and a first supporting portion (113), a resin sealing member (120), an elastic sealing member (130), and a metal fixing member (140). An outer diameter of a cylindrical portion (141) of the fixing member (140) is set to be equal to or smaller than an inner diameter of the case main body (111), and the cylindrical portion (141) and the case main body (111) are secured by welding. The resin sealing member (120) and the elastic sealing member (130) are fixed by being held in between the first supporting portion (113) and a second supporting portion (142) of the fixing member (140).

Abstract: A mechanical seal device for use in a water environment includes: a stationary sealing ring made of SiC; and a rotating sealing ring made of SiC and arranged opposite to the stationary sealing ring, the mechanical seal device bringing opposite sliding surfaces of the stationary sealing ring and the rotating sealing ring into close contact with each other to seal a sealed fluid, wherein at least one of the sealing rings including the sliding surfaces is configured by a sintered compact of a material including SiC as a base material compounded with an Al additive, and a specific resistance value of the sealing ring configured by the sintered compact including the sliding surface is equal to or lower than 100 ?·cm.

Abstract: A fluid circuit includes a pressure fluid source, a switching valve, and a cylinder device having first and second chambers and partitioned by a piston. A first accumulator is configured to communicate with the second chamber when pressure fluid is supplied to the first chamber and to accumulate part of the pressure fluid from the second chamber. A pressure booster is connected in hydraulically parallel to the first accumulator, the pressure booster communicative with the second chamber when the pressure fluid is supplied to the first chamber to boost pressure of the pressure fluid by using part of the pressure fluid from the second chamber. A second accumulator accumulates the pressure fluid whose pressure is boosted by the pressure booster.

Abstract: A liquid supply system includes first and second bellows 41 and 42 arranged in series in an expanding/contracting direction thereof in a vessel 12 and having first end portions respectively, which are close to each other and fixed to an inner wall of the vessel 12, and also having second end portions respectively, which are distant from each other and movable in the expanding/contracting direction. An inner space of the vessel 12 located outside the first bellows 41 serves as a first pump chamber P1. An inner space of the vessel 12 located outside the second bellows 42 serves as a second pump chamber P2. An inner space of the vessel 12 located inside the first and second bellows 41 and 42 serves as a sealed space R1. A shaft 15 to which the respective second end portions of the first and second bellows 41 and 42 are fixed is reciprocally moved to expand/contract the first and second bellows 41 and 42.

Abstract: A solenoid is provided that includes: a primary package that is made of a molding resin and covers a solenoid body in which a coil is wound around a bobbin; and a secondary package that is made of a molding resin and covers the primary package. A contact surface between the primary package and the secondary package is provided with an anchor shape for enhancing joint strength between the primary package and the secondary package. The solenoid includes a connector part for electrifying the coil in addition to the solenoid body, the primary package covers both the solenoid body and the connector part, and the secondary package covers only a part of the primary package covering the solenoid body.

Abstract: The present invention provides a fuel supply system having improved assembly and pulsation reducing efficiency. A housing (20) of a fuel supply system (1) is formed by joining a first housing member (20a) forming one end side of a tubular chamber (23) in the direction of the backward and forward movement of a plunger (10) and a second housing member (20b) forming the other end side. A pulsation reducing mechanism (60) includes a tubular bellows damper (61) housed in the tubular chamber (23).

Abstract: A water lubrication type bearing material contains 12 wt. % to 25 wt. % of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin (PFA resin), 18 wt. % to 33 wt. % of a carbon fiber, and a remainder including a polytetrafluoroethylene (PTFE) resin and/or a modified PTFE resin. The bearing material has excellent wear resistance and sliding characteristics for a water lubrication type bearing.

Abstract: A displacement control valve includes a valve housing, a valve element fitted in a guide passage of the valve housing, and a solenoid for driving the valve element to open and close it, a tapered portion is provided at one of an outer peripheral surface of the valve element and a guide surface of the guide passage, and a spiral groove is provided in the other, wherein the tapered portion is set such that a gap between the valve element and the guide passage is larger toward the low-pressure side than on the high-pressure side, and the tapered portion and the spiral groove are provided such that a starting point of the tapered portion is located within the region of the spiral groove in the entire range between the starting point and the ending point of the stroke of the valve element.

Abstract: A mechanical seal device has a mating ring that rotates with a rotating shaft, as well as a seal ring that slidably contacts the mating right, so as to seal between the rotating shaft and a seal cover fixed to an equipment main body, wherein the seal cover is a split structure comprising at least an inner-diameter-side seal cover and an outer-diameter-side seal cover, the inner-diameter-side seal cover is detachably connected to the outer-diameter-side seal cover, and the seal ring is connected to the inner-diameter-side seal cover in a securely following manner.

Abstract: Disclosed is a lip seal for water pump made of a rubber-like elastic material, fixed to a housing as a fixed side and in sliding contact with a shaft rotating relative to the housing; the lip seal having sliding surface with a surface roughness Ra (according to JIS B0601 corresponding to ISO 4287) of 1 to 30 ?m, being obtained by vulcanization-molding of a rubber composition comprising 100 parts by weight of the rubber-like elastic material, 1 to 150 parts by weight of a reinforcing filler, 5 to 90 parts by weight of a non-reinforcing filler having an average particle diameter of 1 ?m or more, 0.1 to 5 parts by weight of a coupling agent, 1 to 15 parts by weight of a co-crosslinking agent, and 0.5 to 10 parts by weight of an organic peroxide. The lip seal effects to prevent softening and volume swelling of the rubber-like elastic material and furthermore the generation of deposits in the rotating shaft, which are problematic for rotation torque and LLC resistance.