Compressor and sliding member thereof

Abstract

Swash plate connected to the driving shaft through lag plate and hinge structure, and slidably connected to edge of each piston through a pair of shoes in front and rear. The rotational motion of the swash plate accompanied by the rotational motion of driving shaft is converted to the reciprocating motion of the piston through shoes. PEEK coating is formed on the swash plate and the shoes that function as sliding members in the invention, at least on the sliding surface. Solid lubricant may be contained in the PEEK coating. Polytetrafluoroethylene (PTFE) is used for example as the solid lubricant.

1 . A sliding member used in an operating mechanism of a compressor, said sliding member having a surface slidably connecting a surface of another member, wherein the sliding member is made of at least one metal and has a polyether-ether-keton coating formed at least on a portion of the surface thereof.  
     
     
         2 . A sliding member according to  claim 1 , wherein the polyether-ether-keton coating contains a solid lubricant.  
     
     
         3 . A sliding member according to  claim 1 , wherein the polyether-ether-keton coating is formed by electrostatic powder coating.  
     
     
         4 . A sliding member according to  claim 1  wherein the compressor is a swash plate type compressor and the member is a swash plate, wherein a piston is coupled to the swash plate and wherein a shoe is interposed between the piston and swash plate, said shoe slidably contacting the swash plate, and a piston.  
     
     
         5 . A swash plate type compressor comprising: 
 a swash plate;    a piston which reciprocates in accordance with the rotating motion of the swash plate;    a shoe which is disposed between said piston and said swash plate; and    a first polyether-ether-keton coating formed on said swash plate for contacting the shoe.    
     
     
         6 . A swash plate type compressor according to  claim 5  wherein a second polyether-ether-keton coating formed is on said shoe for contacting the swash plate.  
     
     
         7 . A swash plate used in an operating mechanism of a compressor, comprising: 
 a piston coupled to the swash plate;    a shoe interposed between the piston and the swash plate, said shoe having a surface slidably contacting a surface of said swash plate; and    a polyether-ether-keton coating formed on at least a portion of the surface of the swash plate.    
     
     
         8 . A swash plate according to  claim 7 , wherein the polyether-ether-keton coating contains a solid lubricant.  
     
     
         9 . A swash plate according to  claim 7 , wherein the polyether-ether-keton coating is formed by electrostatic powder coating.