WATCH PART AND WATCH EQUIPPED WITH IT

摘要

PROBLEM TO BE SOLVED: To provide watch part with improved abrasion resistance and lubricating property in a friction sliding section and a switching section. SOLUTION: In this watch part, upper and lower tenons of rotor 121 are supported by gear train carrier and cap jewel 150 built in main plate 220. The rotor 121 is provided with a lower tenon 124 on its bottom position. The cap jewel 150 consists of ruby with a pivot hole 151 formed in its center, etc. Surfaces of the rotor 121 and the lower tenon 124 are coated with composite plating 160. This composite plating 160 comprises nickel plating 161 coated through electroplating process and graphite layer 162 exposed to be formed on surface of the nickel plating 161 by using dispersant such as polyacrylic acid. The rotor 121, the lower tenon 124 and the pivot hole 151 are thereby slid through the graphite layer 162. COPYRIGHT: (C)2008,JPO&INPIT