| 摘要 |
PURPOSE:To design a device of a small size and light weight with a reduced axial directional length of a planetary gear speed increasing/decreasing device by inserting an inner pin support roller into each inner pin of the speed increasing/decreasing device so that the inner pin comes into sliding contact with an inner circumferential surface of an inner pin support ring and hat the inner pin support ring is brought into internal contact with an internal gear. CONSTITUTION:An input rotary shaft 1 being integral with an output shaft of a motor M is provided with an eccentric body 3 to which an external gear 5 is fitted. An inner pin support ring 22 consisting of an annular disk 22 is arranged opposite to an inner pin support flange 13 with the external gear 5 located in between and to come into internal contact with an outer pin 9 of an internal gear 8. An inner pin support roller 23 is fitted to an end opposite to the inner pin support flange 13 of the inner pin 11 so that the roller 23 is brought into internal contact with the inner pin support ring 22. As a result, the inner pin 11 is supported on both ends by the support ring 22 and a bearing 21 to increase rigidity of the structure of the speed increasing/reducing device. |
