| 摘要 |
PURPOSE:To simplify construction of a shaft on an output side, to permit a reduction in an overall length in an axial direction and to make a device lighter in weight, by providing a first shaft between an inner pin holding flange and an internal gear and providing an inner pin support ring serving as an outer pin circumscribing an outer pin. CONSTITUTION:An internal gear 8 serves also as a casing on one side and the other side is covered by a cover 20 and a bearing 21 is interposed between an inner pin holding flange 13 and an inner gear 8. The bearing 21 serves also as a presser plate and prevents slipping-off of an inner pin 11. In addition, an outer circumference of an inner support ring 16 fixed to a carrier 15 has an outer circumference is such that it circumscribes (T) an outer pin 9. The contact of the inner pin support ring 16 with the outer pin 9 produces an action as a bearing, whereby a speed reduction mechanism is supported at both sides by the bearing 21 and the contact T. With the arrangement since only one bearing is necessary for supporting the speed reduction mechanism, a height in an axial direction of the overall device is reduced so that the construction of an output end of a reducer is simplified and the reducer is made smaller in size and lighter in weight. |
