| 摘要 |
PURPOSE:To reduce a thrust load by disposing oil-contained members on both side surfaces of a thrust retainer, and devising the assembling structure of the members. CONSTITUTION:A thrust load acted when a motor 12 rotates is applied to a contacting portion of a metal thrust member 24 and a thrust retainer 19. However, one 22 of oil-contained members 21, 22 supply oil to the rotary contacting portion of the member 24 and the retainer 19 to reduce the rotary contacting resistance, thereby smoothly rotating a motor and reducing the noise. Since the fine metal chips produced by the friction of the members 24 and 19 are mixed with the oil so that the greased oil is not scattered by the rotation. Accordingly, the supply of oil to the contacting portion of the members 24, 29 is continuous to increase the lifetime. |
