Sliding parts, precision parts and timepieces and electronic equipment using the same

Abstract

The present invention relates to sliding parts, precision parts and timepieces and electronic equipment using those parts. Sliding parts are composed by a resin in which the degree of orientation of a fibrous filler is higher at the portion serving as the sliding surface than inside the sliding part, and the fibrous filler is oriented along the sliding surface on the sliding surface. Alternatively, precision parts are composed by a resin to which has been added carbon fibers for which a carbon compound is thermally decomposed to carbon in the vapor phase and simultaneously grown directly into fibers simultaneous to this thermal decomposition. Moreover, timepieces and electronic equipment are composed by these sliding parts or these precision parts.

1 . A method for producing a precision part composed of a resin composition comprising a resin and carbon fibers, the method comprises:
 thermally decomposing a carbon compound to carbon in a vapor phase-liquid phase-solid phase reaction system in which three phases consisting of the vapor phase, liquid phase and solid phase are all present while using a transition metal as a catalyst, so that the carbon is simultaneously grown directly into the carbon fibers.   
     
     
         2 . A method for producing a precision part according to  claim 1 , wherein the carbon fibers have an apparent density of 0.02-0.08 g/cm 3  and a fiber length of 10-20 μm. 
     
     
         3 . A method for producing a precision part according to  claim 1 , wherein the carbon fibers are carbonaceous products heat treated at 1300° C. 
     
     
         4 . A method for producing a precision part according to  claim 1 , wherein the carbon fibers are graphitized products heat treated at 2800° C. 
     
     
         5 . A method for producing a precision part according to  claim 1 , wherein the resin is at least one resin among polyacetal resin, polyamide resin, polyphenylenesulfide resin and polycarbonate resin.