| 摘要 |
PROBLEM TO BE SOLVED: To simplify processes and reduce a manufacturing cost without losing easiness of assembling, by fitting the inner circumference of the edge of a yoke with a separator and a bottom plate using a tongue and a groove,and by fitting the outer peripheral edge of the separator with the inner circumference of a covering member using a tongue and a groove. SOLUTION: The inner circumference of the right edge of a yoke 44 is fitted with a tongue groove part 11a which as formed with steps projecting in the shaft direction of a bottom plate 11. The inner circumference of the left edge of the yoke 44 is fitted with a tongue groove part 43b which is formed with steps projecting in the plural shaft directions of a separator 43. Furthermore, the outer peripheral edge 43c of a separator 43 is fitted with a tongue groove part 17b which is formed with steps projecting in the inner peripheral face of a gear cover 17. In other words, the separator 43, the yoke 44, and the bottom plate 11 are relatively positioned by a tongue groove fitting, the gear cover 17 and the separator 43 are relatively positioned by the tongue groove fitting, and therefore, they are centered. |
