| 摘要 |
PURPOSE:To improve assembly work efficiency, to improve a drive force during drive, to increase the degree of freedom of a design, and to provide the stable mounting state of a drive shaft. CONSTITUTION:Inclination peripheral surfaces 3a and 4a on the gear side inclined toward an axis are formed on the inner peripheral parts of the sides, positioned facing each other, of first and second side gears 3 and 4. Inclination peripheral surfaces 21 and 22 on the block side making contact with the inclination peripheral surfaces 3a and 4a on the gear side are formed on the outer peripheral parts both sides, positioned facing each other, of the first and second drive shafts 101 and 102 of a thrust block 2.
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