Contact member, slide member, compressor comprising contact member or slide member, and manufacturing method of compressor

Abstract

A contact member or a slide member of the present invention comprises a surface treatment film ( 160 ) including two or more coating layers stacked together, in at least a portion of a contact surface or a slide surface thereof, wherein each of the coating layers includes synthetic resin and a solid lubricant, and wherein the solid lubricant ( 162 ) of the coating layer located at an innermost side is lower in content percentage than the solid lubricant of the coating layer located at an outermost side. A contact member or a slide member of the present invention comprises a surface treatment film ( 160 ) including two or more coating layers stacked together, in at least a portion of a contact surface or a slide surface thereof, each of the coating layers includes synthetic resin, and the coating layer located at an innermost side is larger in elastic deformation amount than the coating layer located at an outermost side.

1 . A contact member comprising:
 a surface treatment film including two or more coating layers stacked together, in at least a portion of a contact surface thereof,   wherein each of the coating layers includes synthetic resin and a solid lubricant, and   wherein the solid lubricant of the coating layer located at an innermost side is lower in content percentage than the solid lubricant of the coating layer located at an outermost side.   
     
     
         2 . The contact member according to  claim 1 ,
 wherein the solid lubricant of the coating layer located at an inner side, of adjacent coating layers, is lower in content percentage than the solid lubricant of the coating layer located at an outer side, of the adjacent coating layers.   
     
     
         3 . The contact member according to  claim 1 ,
 wherein the solid lubricant comprises at least one compound selected from a compound group consisting of molybdenum disulfide, graphite, polytetrafluoroethylene resin, and antimony trioxide.   
     
     
         4 . The contact member according to  claim 1 ,
 wherein the solid lubricant of the coating layer located at the innermost side is smaller in average particle diameter than the solid lubricant of the coating layer located at the outermost side.   
     
     
         5 . A contact member comprising:
 a surface treatment film including two or more coating layers stacked together, in at least a portion of a contact surface thereof,   wherein each of the coating layers includes synthetic resin, and   wherein the coating layer located at an innermost side is larger in elastic deformation amount than the coating layer located at an outermost side.   
     
     
         6 . The contact member according to  claim 5 ,
 wherein the coating layer located at an inner side, of adjacent coating layers, is larger in elastic deformation amount than the coating layer located at an outer side, of the adjacent coating layers.   
     
     
         7 . The contact member according to  claim 1 ,
 wherein the surface treatment film has a thickness of 1 μm to 30 μm.   
     
     
         8 . The contact member according to  claim 1 ,
 wherein the synthetic resin comprises at least one resin selected from a resin group consisting of polyamide resin, epoxy resin, and phenol resin.   
     
     
         9 . A compressor comprising:
 a cylinder which accommodates a reciprocatable piston therein;   a valve plate placed at an opening end of the cylinder and includes a suction hole, a suction valve seat provided to surround the suction hole, a discharge hole, and a discharge valve seat provided to surround the discharge hole;   a suction valve which opens and closes the suction hole; and   a discharge valve which opens and closes the discharge hole,   wherein at least one of the suction valve seat, the discharge valve seat, the suction valve, and the discharge valve comprises the contact member as recited in  claim 1 .   
     
     
         10 . A slide member comprising:
 a surface treatment film including two or more coating layers stacked together, in at least a portion of a slide surface thereof,   wherein each of the coating layers includes synthetic resin and a solid lubricant, and   wherein the solid lubricant of the coating layer located at an innermost side is lower in content percentage than the solid lubricant of the coating layer located at an outermost side.   
     
     
         11 . The slide member according to  claim 10 ,
 wherein the solid lubricant of the coating layer located at an inner side, of adjacent coating layers, is lower in content percentage than the solid lubricant of the coating layer located at an outer side, of the adjacent coating layers.   
     
     
         12 . The slide member according to  claim 10 ,
 wherein the solid lubricant comprises at least one compound selected from a compound group consisting of molybdenum disulfide, graphite, polytetrafluoroethylene resin, and antimony trioxide.   
     
     
         13 . The slide member according to  claim 10 ,
 wherein the solid lubricant of the coating layer located at the innermost side is smaller in average particle diameter than the solid lubricant of the coating layer located at the outermost side.   
     
     
         14 . A slide member comprising:
 a surface treatment film including two or more coating layers stacked together, in at least a portion of a slide surface thereof,   wherein each of the coating layers includes synthetic resin, and   wherein the coating layer located at an innermost side is larger in elastic deformation amount than the coating layer located at an outermost side.   
     
     
         15 . The slide member according to  claim 14 ,
 wherein the coating layer located at an inner side, of adjacent coating layers, is larger in elastic deformation amount than the coating layer located at an outer side, of the adjacent coating layers.   
     
     
         16 . The slide member according to  claim 10 ,
 wherein the surface treatment film has a thickness of 1 μm to 10 μm.   
     
     
         17 . The slide according to  claim 10 ,
 wherein the synthetic resin comprises at least one resin selected from a resin group consisting of polyamide resin, epoxy resin, and phenol resin.   
     
     
         18 . A compressor comprising:
 an electric component including a stator and a rotor;   a compression component activated by the electric component; and   a sealed container in which the electric component and the compression component are accommodated and lubricating oil is stored,   wherein the compression component includes a crankshaft including a main shaft and an eccentric shaft, a main bearing supporting the crankshaft such that the crankshaft is rotatable, a cylinder block defining a cylinder, a piston which is reciprocatable inside the cylinder, a piston pin mounted to the piston such that a center axis of the piston pin is parallel to the eccentric shaft; and a connecting rod connecting the eccentric shaft and the piston pin to each other, and   wherein at least one of members constituting the compression component comprises the slide member as recited in  claim 10 .   
     
     
         19 . The compressor according to  claim 18 ,
 wherein a suction pressure is applied to the lubricating oil stored in the sealed container.   
     
     
         20 . A manufacturing method of a compressor comprising:
 (A) applying a first surface treatment agent including synthetic resin and a solid lubricant to at least a portion of a slide surface or a contact surface thereof to form a first coating layer; and   (B) applying onto the first coating layer a second surface treatment agent including a solid lubricant with a larger average particle diameter than the solid lubricant of the first surface treatment agent to form a second coating layer.   
     
     
         21 . The contact member according to  claim 2 ,
 wherein the solid lubricant comprises at least one compound selected from a compound group consisting of molybdenum disulfide, graphite, polytetrafluoroethylene resin, and antimony trioxide.   
     
     
         22 . The contact member according to  claim 5 ,
 wherein the surface treatment film has a thickness of 1 μm to 30 μm.   
     
     
         23 . The contact member according to  claim 5 ,
 wherein the synthetic resin comprises at least one resin selected from a resin group consisting of polyamide resin, epoxy resin, and phenol resin.   
     
     
         24 . A compressor comprising:
 a cylinder which accommodates a reciprocatable piston therein;   a valve plate placed at an opening end of the cylinder and includes a suction hole, a suction valve seat provided to surround the suction hole, a discharge hole, and a discharge valve seat provided to surround the discharge hole;   a suction valve which opens and closes the suction hole; and   a discharge valve which opens and closes the discharge hole,   wherein at least one of the suction valve seat, the discharge valve seat, the suction valve, and the discharge valve comprises the contact member as recited in  claim 5 .   
     
     
         25 . The slide member according to  claim 11 ,
 wherein the solid lubricant comprises at least one compound selected from a compound group consisting of molybdenum disulfide, graphite, polytetrafluoroethylene resin, and antimony trioxide.   
     
     
         26 . The slide member according to  claim 14 ,
 wherein the surface treatment film has a thickness of 1 μm to 10 μm.   
     
     
         27 . The slide according to  claim 14 ,
 wherein the synthetic resin comprises at least one resin selected from a resin group consisting of polyamide resin, epoxy resin, and phenol resin.   
     
     
         28 . A compressor comprising:
 an electric component including a stator and a rotor;   a compression component activated by the electric component; and   a sealed container in which the electric component and the compression component are accommodated and lubricating oil is stored,   wherein the compression component includes a crankshaft including a main shaft and an eccentric shaft, a main bearing supporting the crankshaft such that the crankshaft is rotatable, a cylinder block defining a cylinder, a piston which is reciprocatable inside the cylinder, a piston pin mounted to the piston such that a center axis of the piston pin is parallel to the eccentric shaft; and a connecting rod connecting the eccentric shaft and the piston pin to each other, and   wherein at least one of members constituting the compression component comprises the slide member as recited in  claim 14 .   
     
     
         29 . The compressor according to  claim 28 ,
 wherein a suction pressure is applied to the lubricating oil stored in the sealed container.