| 摘要 |
PURPOSE:To maintain a clutch outer and clutch inner coaxially stably without setting them eccentrically and prevent a bearing and coupling member from abnormal wear by supporting the clutch outer and clutch inner of an overrunning clutch on both end bearings. CONSTITUTION:A clutch inner 66 of an overrunning clutch 65 is supported on the rear end by a ball bearing 22 in the front end of an armature rotary shaft 7 and on the front end by a ball bearing 29 in the front inner periphery of a front bracket 60. A clutch outer 67 is supported at the rear end by a bearing 69 on the clutch inner 66 and a plurality of rollers 26 are disposed between both clutch inner and clutch outer. A holding cap 68 caulked fixedly to the outer periphery of the clutch outer 67 is supported by a bearing 70 on the clutch inner 66. The inner periphery of a cylindrical part 63b of a planet gear frame 63 is shrinkage fitted on the outer peripheral part of the clutch outer 67 so that a slip is generated under above predetermined rotary torque to provide an interference for buffering an impact load. |
