| 摘要 |
The clutch plate of a friction clutch in a motor vehicle has a first damping unit whose input element carries the friction linings and whose output element is a first hub having a radially outwardly extending first flange, and a second damping unit whose input element constitutes the input element of the first damping unit and whose output element has a second hub surrounding a portion of the first hub and having a second flange extending radially outwardly therefrom. The first damping unit has first coil springs in registering openings of the first flange and the input element, and the second damping unit has second coil springs in registering openings of the input element and second flange. The springs of the first unit oppose rotation of the linings relative to the first hub during a first stage of angular movement of the input element relative to the first hub, and the springs of the second unit cooperate with the springs of the first unit to yieldably oppose further rotation of the linings relative to the first hub. The extent to which the springs of the first unit alone oppose rotation of the linings relative to the first hub is determined by the circumferential play between the external teeth of the first hub and the internal teeth of the second hub.
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