| 摘要 |
An automatic adjusting device for a spring loaded friction type clutch is incorporated, as a sub-assembly, in the lever system of the clutch between an actuating collar and an axially movable adjuster ring so as to be operable to advance the adjusting ring by very small increments as the friction surfaces of the clutch wear. The improvement being an adjusting device having support means secured to the clutch cover and coil springs concentrically disposed about a pair of hub members adapted to be coupled through a lost motion connection and rotatably carried on the support means. The coil spring associated with the first hub member is connected to the actuating collar and operable thereby to rotatably drive the hub members through the coupling connection. The coil spring associated with the second hub member engages the support means and reacts thereon to function as a backstop or drag brake when the first coil spring is not rotatably driving the first hub member. A worm gear integral with the second hub member engages and effects axial movement of the adjusting ring when the hub members are rotated past their lost motion connection by the first spring. |
