| 摘要 |
Abrasion dust that is generated between clutch plates that are pressed together via a friction facing is carried in an axial air flow and is externally discharged. In a hybrid drive power transmission system, a dry multi-plate clutch 7 that is disposed in a sealed space and disconnects the transmitting of drive power comprises a drive plate 71, a driven plate 72, a friction facing 73, and a front cover 60. The drive plate 71 is joined by splines to a clutch hub 3. The driven plate 72 is joined by splines to a clutch drum 6. The front cover 60 has an external air intake hole 66 that takes external air into the sealed space and an external air discharge hole 67 that discharges a flow of air from the sealed space. In the front cover 60 that is disposed on a side face of the clutch, the external air intake hole 66 that passes through axially is provided at a radially inward location relative to the two clutch plates 71, 72, and an external air discharge hole 67 that passes through axially is provided at a radially outward location relative to the two clutch plates 71, 72. |
