| 摘要 |
PROBLEM TO BE SOLVED: To reduce mass-production cost by simplifying a constitution while uniformly keeping roller retaining attitude and retaining function. SOLUTION: In this retainer 10, both sides of a window hole 13 are defined by both inner faces opposite to each other in the circumferential direction, of two pole portions 12, bent extending portions 15 are formed on pole central portions of the inner faces of both pole portions, circumferential extending portions 16 are formed on pole end portions of the inner faces of both pole portions, the bent extending portions 15 accessibly retain one half side of the roller 14 tangentially or at their end edges, and the circumferential extending portions 16 retain the other half side of the roller 14 at their end edges. COPYRIGHT: (C)2006,JPO&NCIPI
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