| 摘要 |
PURPOSE:To avoid the generation of abnormal sounds by supporting the bearing which supports a motor shaft by another bearing so that the shaft can be slidden in the axial direction, sliding the motor shaft when the power is transmitted to the output shaft, and eliminating a spline mechanism. CONSTITUTION:A cylindrical bearing 23 is provided on the inner periphery of a ball bearing 22 for supporting the motor shaft 15, so that the motor shaft 15 can be slidden in the axial direction. A clutch friction disk 6 is coupled to the motor shaft 15 via a flywheel 5 and opposes a sliding face 8 of a rotary plate 20 which is coupled with an output shaft 7. In the case the power is transmitted to the output shaft 7, a clutch electromagnet 1 is conducted, a motor shaft 15 is attracted and slidden to the output shaft 7, and the clutch friction disk 6 and the sliding face 8 are engaged by friction. In this constitution, since the spline mechanism on the output shaft 7 is eliminated, the abnormal sounds are not generated. |
