| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a motive power transmission device capable of preventing sliding of a friction clutch, by making quick recovery of the vibration-absorbing function of a vibration absorbing material at low-temperature time. SOLUTION: A copper material 124a as a heat high transmission mechanism is arranged over an outer peripheral surface 114b from a friction surface 114d of a clutch rotor 114. Thus, a main damper rubber 112 hardens at low- temperature time, and when the slide is caused in an electromagnetic friction clutch 20, frictional heat generated in the friction surface 114d can be transmitted quickly to the main damper rubber 112 by the copper material 124a. Thereby, the main damper rubber 112 rises in temperature, the vibration-absorbing function is recovered quickly, and sliding of the electromagnetic friction clutch 20 can be prevented. Even if the main damper rubber 112 turns to a high- temperature state due to excessive vibration absorption, since the copper material 124a disperses the heat of the main damper rubber 112 to the side of the electromagnetic friction clutch 20 side, overheating of the main damper rubber 112 can be prevented.</p> |
