| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulley made of magnesium which prevents a body and a bearing from idling while not only obtaining characteristics of magnesium by employing magnesium (or a magnesium alloy) as molding materials but also being able to form and surely hold an almost complete round pulley by insert molding in which a bearing is inserted. SOLUTION: In a pulley having a bearing structure in which a bearing is integrally assembled, a pulley body is formed of magnesium or a magnesium alloy. An annular resin part made of a plastic is interposed between the pulley body and a bearing. By so doing, the annular resin part is insert-molded taking the pulley body and the bearing as insert parts. COPYRIGHT: (C)2005,JPO&NCIPI
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