Abstract: In a piston type compressor, a housing includes a cylinder head which defines a discharge chamber and a cooling chamber. The cooling chamber located adjacent to the discharge chamber surrounds the discharge chamber. The housing also defines a suction chamber, a compression chamber, and a crank chamber. The cooling chamber is isolated from the suction chamber. Gas is introduced from outside of the housing into the suction chamber. A rotary shaft is rotatably supported in the housing. The cam is accommodated in the crank chamber. A piston is operatively coupled to the rotary shaft through the cam. Rotation of the rotary shaft is converted to reciprocation of the piston. A seal member shuts communication between the cooling chamber and an atmosphere outside the compressor to seal an inside of the cylinder head. An introducing passage interconnects the cooling chamber and the crank chamber.

Abstract: An engine mount has: a mount body including an upper and lower fitting of plate shape, and a pair of rubber mount elements of block shape; and an inner tube fitting situated within a through-hole in the upper fitting, formed at a location between the pair of rubber mount elements, and a vibration damping bushing integrally vulcanization bonded with the inner tube fitting and the upper fitting, and connecting the inner and upper fittings in the diametrical direction. The pair of rubber mount elements and the bushing rubber are integrally vulcanization molded. A stopper fitting is affixed within the inner tube fitting, with a vehicle front-back direction fitting stopper portion and/or a left-right direction fitting stopper portion being disposed on the stopper fitting, and a corresponding rubber stopper portion is disposed on the upper fitting side, with the fitting stopper portion and the rubber stopper portion being placed abutting one another.

Abstract: A lubricating structure in a fixed displacement piston type compressor has a housing, a rotary shaft, a cam, a piston, a rotary valve and a rotary body. The housing defines a cam chamber, cylinder bores and a suction pressure region. The rotary shaft is rotatably supported by the housing. The cam is located in the cam chamber and is connected to the rotary shaft. The piston is located in each of the cylinder bores and engages the cam to reciprocate with rotation of the rotary shaft through the cam. The rotary valve connected to the rotary shaft includes an introducing passage and a supply passage that interconnects the introducing passage and the suction pressure region. The introducing passage introduces fluid into the cylinder bores through the supply passage. The rotary body connected to the rotary shaft includes a communication passage that interconnects the cam chamber and the suction pressure region.

Abstract: An orifice device is adapted to be disposed within a fluid chambers of a vibration absorption device. The fluid chamber is defined by at least a wall portion made of resilient material. The orifice device includes an orifice casing, a retaining cover and a membrane that is made of resilient material, such as rubber. The membrane is adapted to be clamped between the orifice casing and the retaining cover. A lock mechanism serves to lock the orifice casing and the retaining cover together when the orifice casing and the retaining cover rotate relative to each other about an axis while the orifice casing and the retaining cover are overlapped with each other.

Abstract: A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to the surface of the swash plate. The sliding film is formed of binder resin which contains a solid lubricant and titanium oxide powder. This allows the surface of the swash plate and the flat surface of the shoe to smoothly slide upon each other.

Abstract: A lubricating structure in a piston type compressor has a housing, a device for being lubricated and a rotary shaft. The housing defines an accommodating chamber and a suction pressure region. The device for being lubricated is located in the accommodating chamber. The rotary shaft is rotatably supported by the housing. The rotary shaft includes a supply passage, a communicating port, a lubricating hole and a flow guiding portion. The supply passage transfers fluid that contains lubricant. The communicating port interconnects the supply passage and the suction pressure region. The lubricating hole interconnects the accommodating chamber and the supply passage. The flow guiding portion is formed on a circumferential surface of the supply passage and is located near the lubricating hole. The flow guiding portion guides the lubricant toward the lubricating hole.

Abstract: A refrigeration suction mechanism used in a piston type compressor. The compressor comprises a rotary shaft, a plurality of pistons, a compression chamber and a rotary valve. The pistons are arranged in a circumference of the rotary shaft to reciprocate in conjunction with a rotating motion of the rotary shaft through a cam member. An end surface of one of said pistons reciprocates in the compression chamber. The rotary valve includes an introducing passage which allows refrigerant to flow into the compression mechanism through an end opened on an outer surface of the rotary valve. The refrigeration suction mechanism comprises a suction passage and a reactive force transmitting mechanism. The suction passage communicates with the cylinder bore and intermittently communicates with the end of the introducing passage in conjunction with a rotating motion of the rotary valve.

Abstract: A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to the surface of the swash plate. The sliding film is formed of binder resin which contains a solid lubricant and titanium oxide powder. This allows the surface of the swash plate and the flat surface of the shoe to smoothly slide upon each other.

Abstract: A double-headed piston type compressor forms a first compression chamber and a second compression chamber for compressing gas. The compressor has rotary shaft having an inner chamber that interconnects a suction chamber and the first and second compression chambers for introducing the gas into the first and second compression chambers. The compressor also has a partition wall that is located in the inner chamber for dividing the inner chamber into a first passage and a second passage. The first passage interconnects the suction chamber and the first compression chamber. The second passage interconnects the suction chamber and the second compression chamber.

Abstract: In a piston type compressor, a housing includes a cylinder head which defines a discharge chamber and a cooling chamber. The cooling chamber located adjacent to the discharge chamber surrounds the discharge chamber. The housing also defines a suction chamber, a compression chamber, and a crank chamber. The cooling chamber is isolated from the suction chamber. Gas is introduced from outside of the housing into the suction chamber. A rotary shaft is rotatably supported in the housing. The cam is accommodated in the crank chamber. A piston is operatively coupled to the rotary shaft through the cam. Rotation of the rotary shaft is converted to reciprocation of the piston. A seal member shuts communication between the cooling chamber and an atmosphere outside the compressor to seal an inside of the cylinder head. An introducing passage interconnects the cooling chamber and the crank chamber.

Abstract: A rear engine mount includes a rectangular upper metal plate member, a metal stopper member, and a lower metal plate member. The metal stopper member includes a pair of side plates, and a bottom plate. The lower metal plate member is disposed a predetermined distance away from the upper metal plate member in a facing condition, with the metal stopper member disposed therebetween, and includes a pair of retaining portions provided at opposite end positions. A second stopper portion includes a pair of vertical plate portions standing on the lower metal plate member, and a horizontal plate member which is attached to the ends of the vertical plate portions and extended over the bottom plate of the metal stopper member. A pair of elastic rubber support members is bonded to the lower surface of the upper metal plate member at opposite end portions.

Abstract: A fluid-filled vibration-damping device includes an elastic body elastically connecting a first and a second mounting member so as to close one open-end portion of the second mounting member, and a partition member assembled with the second mounting member on one side thereof to form therebetween a pressure-receiving chamber partially defined by the elastic body and assembled with a fixing member on the other side thereof to form an equilibrium chamber partially defined by a flexible layer supported by one pen-end portion of the fixing member. The partition member includes a first and second fixing grooves axially spaced apart from each other with an intermediate portion therebetween, to which the other open-end portions of the second mounting and fixing members are respectively press-fitted, and an air passage for connecting a working air chamber to an external air conduit is open in the intermediate portion.

Abstract: An orifice device is adapted to be disposed within a fluid chambers of a vibration absorption device. The fluid chamber is defined by at least a wall portion made of resilient material. The orifice device includes an orifice casing, a retaining cover and a membrane that is made of resilient material, such as rubber. The membrane is adapted to be clamped between the orifice casing and the retaining cover. A lock mechanism serves to lock the orifice casing and the retaining cover together when the orifice casing and the retaining cover rotate relative to each other about an axis while the orifice casing and the retaining cover are overlapped with each other.

Abstract: A rear engine mount includes a rectangular upper metal plate member, a metal stopper member, and a lower metal plate member. The metal stopper member includes a pair of side plates, and a bottom plate, which collectively form a shape resembling the letter U, and stands on the lower surface of the upper metal plate member at longitudinally opposite end portions. The lower metal plate member is disposed a predetermined distance away from the upper metal plate member in a facing condition, with the metal stopper member disposed therebetween, and includes a pair of retaining portions provided at opposite end positions located in opposition to the opposite end portions of the upper metal plate member. A second stopper portion includes a pair of vertical plate portions which stands on the lower metal plate member, and a horizontal plate member which is attached to the ends of the vertical plate portions and extends over the bottom plate of the metal stopper member, thereby surrounding the bottom plate.

Abstract: A lubricating structure in a piston type compressor has a housing. a rotary shaft, a rotary valve and a shaft seal device. The housing defines a seal chamber, a plurality of cylinder bores and a suction pressure region. The rotary shaft is rotatably supported by the housing and includes a lubricating passage that interconnects the seal chamber and the suction pressure region. The rotary valve is connected to the rotary shaft and includes an introducing passage. The rotary shaft further includes a supply passage that interconnects the introducing passage and the suction pressure region for introducing fluid into the cylinder bores. The shaft seal device is located in the seal chamber and is located between the housing and the rotary shaft for preventing the fluid from leaking along a circumferential surface of the rotary shaft from the housing.

Abstract: A lubricating structure in a piston type compressor has a housing, a device for being lubricated and a rotary shaft. The housing defines an accommodating chamber and a suction pressure region. The device for being lubricated is located in the accommodating chamber. The rotary shaft is rotatably supported by the housing. The rotary shaft includes a supply passage, a communicating port, a lubricating hole and a flow guiding portion. The supply passage transfers fluid that contains lubricant. The communicating port interconnects the supply passage and the suction pressure region. The lubricating hole interconnects the accommodating chamber and the supply passage. The flow guiding portion is formed on a circumferential surface of the supply passage and is located near the lubricating hole. The flow guiding portion guides the lubricant toward the lubricating hole.

Abstract: A rotary valve is used as a suction valve mechanism of a compressor. The rotary valve rotates integrally with a drive shaft to selectively open or close a suction passage of refrigerant gas from a suction chamber to a compression chamber in accordance with relative positions of the suction communicating passage and the suction guiding groove. An outer surface of the rotary valve directly slides on an inner surface of a valve accommodating chamber formed in a cylinder block, thereby constituting a slide bearing surface. The slide bearing surface rotatably supports the rear end of the drive shaft on housings. Accordingly, a piston type compressor which is comfortably used, inexpensively manufactured, and has high compression efficiency is provided.

Abstract: A lubricating structure in a fixed displacement piston type compressor has a housing, a rotary shaft, a cam, a piston, a rotary valve and a rotary body. The housing defines a cam chamber, cylinder bores and a suction pressure region. The rotary shaft is rotatably supported by the housing. The cam is located in the cam chamber and is connected to the rotary shaft. The piston is located in each of the cylinder bores and engages the cam to reciprocate with rotation of the rotary shaft through the cam. The rotary valve connected to the rotary shaft includes an introducing passage and a supply passage that interconnects the introducing passage and the suction pressure region. The introducing passage introduces fluid into the cylinder bores through the supply passage. The rotary body connected to the rotary shaft includes a communication passage that interconnects the cam chamber and the suction pressure region.

Abstract: A refrigeration suction mechanism used in a piston type compressor. The compressor comprises a rotary shaft, a plurality of pistons, a compression chamber and a rotary valve. The pistons are arranged in a circumference of the rotary shaft to reciprocate in conjunction with a rotating motion of the rotary shaft through a cam member. An end surface of one of said pistons reciprocates in the compression chamber. The rotary valve includes an introducing passage which allows refrigerant to flow into the compression mechanism through an end opened on an outer surface of the rotary valve. The refrigeration suction mechanism comprises a suction passage and a reactive force transmitting mechanism. The suction passage communicates with the cylinder bore and intermittently communicates with the end of the introducing passage in conjunction with a rotating motion of the rotary valve.

Abstract: A fluid-filled vibration damping device includes an elastic body elastically connecting a first and a second mounting member so as to close one open-end portion of the second mounting member, and a partition member assembled with the second mounting member on one side thereof to form therebetween a pressure-receiving chamber partially defined by the elastic body and assembled with a fixing member on the other side thereof to form an equilibrium chamber partially defined by a flexible layer supported by the fixing member. The partition member includes a fixing groove to which open end peripheral portions of the cylindrical portion of the second mounting and the fixing sleeve portion of the fixing members are press-fitted, whereby the peripheral portion of the flexible layer is fixed to the partition member.