| 摘要 |
<p>A friction clutch driven plate incorporates a torsional vibration damper which comprises a hub (11), a friction facing carrier (16) mounted co-axially with the hub for limited relative rotation thereto and an intermediate member (12) mounted co-axially with the hub for limited relative rotation thereto (13 in 14). Main torsion damping springs (25, 26, 27, 28) are arranged in a driving connection between the friction facing carrier and the intermediate member (12) to control a range of the relative rotation (17 in 21) between the hub and carrier. Auxiliary torsion damping springs (15), weaker than the main torsion damping springs, are arranged in a driving connection between the hub and the intermediate member (12) to control a further range (13 in 14) of the relative rotation between the hub and carrier over which the main springs are ineffective. A selectively operable locking member (41) arranged to lock the intermediate member (12) against at least some of the rotation (13 in 14) relative to said other of the driving and driven members (11), comes into operation in response to deflection under load of a main torsion damping spring (26) when that spring engages the locking member (41) and moves it into a locking position (48 in 47).</p> |
