Patent ID: 6189434
Filing Date: 2001-02-20
Classification: F04B,F05C

Abstract:
A single-headed piston type swash-plate-operated refrigerant compressor comprising:a rotatably supported drive shaft having an axis of rotation thereof;a swash plate having a body comprising an axially front surface and an axially rear surface thereof, and mounted on said drive shaft for rotation together with said drive shaft, said swash plate body having a sprayed coating layer being applied to said front surface of said body, and a sprayed coating layer and a solid lubricant layer being applied to said rear surface of said body;at least one single headed piston arranged on the rear side of said swash plate;a pair of shoes arranged to keep in slide-contact with said front and rear surfaces of said swash plate to operatively engage an end part of said single headed piston with a peripheral part of said swash plate to thereby convert a rotating motion of said swash plate into a reciprocating motion of said single headed piston; anduppermost layers provided on said front and rear surfaces of said swash plate, said uppermost layers having physical surface properties different from one another in a manner such that a slide-contact performance between said rear surface of said swash plate and the corresponding one of said pair of shoes is superior to that between said front surface of said swash plate and the corresponding other of said pair of shoes and wherein said uppermost layers of said front and rear surfaces of said swash plate are made of different materials exhibiting said physical surface properties different from one another;wherein said solid lubricant layer contains a solid lubricant at least in a part thereof, and is formed in said uppermost layer of said rear surface of said swash plate;wherein said solid lubricant is at least one of lubricating materials including molybdenum disulfide, tungsten disulfide, graphite, boron nitride, antimony oxide, lead oxide, lead, indium, tin and fluorocarbon resins.