Swash plate and compressor utilizing the same

Abstract

A swash plate of a compressor comprising a plate member supported by a rotation shaft and contacting a shoe supported capable of sliding with respect to a piston, for reciprocating the piston, wherein an intermediary layer is formed on the surface of the plate member, and a solid lubrication layer formed of silver or silver alloy in which an adhesive force to the plate member is strengthened by the intermediary layer. Thus, the swash plate of the compressor according to the present invention exhibits an improved lubrication feature at a high temperature and under heavy load while frictionally contacting the shoe and rotating at a high speed and is prevented from being seizured into the shoe. Also, reliability according to driving of the compressor is improved. Further, the lubrication features of the swash plate and the shoe are improved and the life span of the compressor is extended

What is claimed is:  
     
         1 . A swash plate of a compressor comprising a plate member supported by a rotation shaft and contacting a shoe supported capable of sliding with respect to a piston, for reciprocating the piston, wherein an intermediary layer is formed on the surface of the plate member, and a solid lubrication layer formed of silver or silver alloy in which an adhesive force to the plate member is strengthened by the intermediary layer.  
     
     
         2 . The swash plate as claimed in  claim 1 , wherein the intermediary layer is formed of any of copper, nickel, manganese, and cobalt, or an alloy thereof.  
     
     
         3 . The swash plate as claimed in  claim 1 , wherein the solid lubrication layer is formed into an alloy layer of silver and at least one of soft metal elements of Sn, In, Pd, Cd, Zn, and Au.  
     
     
         4 . The swash plate as claimed in either  claim 1  or  claim 3 , wherein the solid lubrication layer is compound-plated with a mixture of a solid lubricant and silver.  
     
     
         5 . The swash plate as claimed in  claim 4 , wherein the solid lubricant is formed of at least one of molybdenum di-sulphide, tungsten di-sulphide, graphite, boron nitride, and Teflon including polytetra-fluorethylen.  
     
     
         6 . The swash plate as claimed in any of claims  1  through  3 , wherein an auxiliary lubrication layer is formed on the upper surface of the solid lubrication layer.  
     
     
         7 . The swash plate as claimed in  claim 6 , wherein the auxiliary lubrication layer is formed any of Sn, In, Pd, Cd, Zn, and Au, or an alloy thereof.  
     
     
         8 . The swash plate as claimed in  claim 6 , wherein the auxiliary lubrication layer is formed any of Sn, In, Pd, Cd, Zn, and Au, or an alloy of these elements and silver.  
     
     
         9 . The swash plate as claimed in  claim 6 , wherein the upper surface of the solid lubrication layer is compound-plated with a mixture of solid lubricant and silver.  
     
     
         10 . The swash plate as claimed in  claim 9 , wherein the solid lubricant is formed of at least one of molybdenum di-sulphide, tungsten di-sulphide, graphite, boron nitride, and Teflon including polytetra-fluorethylen.  
     
     
         11 . The swash plate as claimed in  claim 1 , wherein the thickness of the solid lubrication layer is 2 through 30 μm and the thickness of the intermediary layer is 0.05 through 3 μm.  
     
     
         12 . The swash plate as claimed in  claim 1 , wherein the surface roughness Ra of the solid lubrication layer is 1.0 μm or less.  
     
     
         13 . The swash plate as claimed in  claim 1 , wherein the intermediary layer and the solid lubrication layer are formed along a trace made as the swash plate contacts the shoe.  
     
     
         14 . A compressor using a swash plate claimed in any of claims  1  through  3 ,  5 , and  7  through  13 .  
     
     
         15 . A compressor comprising: 
 an intermediary layer formed at at least one side of a friction surface of a driving portion of the compressor; and    a solid lubrication layer formed of silver or a silver alloy and having an adhesive force strengthened by the intermediary layer.