| 摘要 |
PROBLEM TO BE SOLVED: To provide a sliding part with improved durability and wear resistance by forming a lubricant sump for guiding lubricant in the sliding direction. SOLUTION: A thread take-up shaft 25 has a sliding part 33 on which a connection member slides, and the sliding part 33 is equipped with a structure having a Cr coating 31 and a DLC coating 32 formed on the surface layer of a base material. The DLC coating 32 has the lubricant sump 35 formed, comprising a plurality of rhombus recessed parts 34 and having a lubricant guiding part 38 which is narrower in width on the forward side in the sliding direction. Lubricant accumulated in the lubricant sump 35 is made to flow by the sliding connection member, guided to the forward side in the sliding direction by the lubricant guiding part 38, oil pressure is increased, and lubricant is positively supplied to the sliding part 33. COPYRIGHT: (C)2005,JPO&NCIPI
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