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    • 5. 发明授权
    • Self-adjusting clutch mechanism
    • 自动调节离合器机构
    • US5456345A
    • 1995-10-10
    • US216621
    • 1994-03-23
    • Kevin J. Bissett
    • Kevin J. Bissett
    • F16D13/75
    • F16D13/757
    • A self-adjusting mechanism compensates for wear of over-center clutches and the like and is adapted to mechanically sense clutch wear or slack when the clutch is engaged and to compensate for such wear or slack upon disengagement of the clutch. The self-adjusting mechanism preferably comprises a relatively durable and simple ratchet mechanism including teeth mounted on the adjusting ring and a pawl mounted on the clutch face plate. The pawl retracts upon clutch engagement by an amount determined by the thickness of the gap between the adjusting ring and the face plate which is in turn dependent at least in part on clutch wear, and advances upon clutch disengagement by an equal amount. Slack adjustment takes place when the pawl engages a new tooth upon retraction and then advances upon clutch disengagement to drive the tooth and thus the adjusting ring to rotate on the hub. The maximum stroke of the pawl, and thus the minimum adjusted gap between the adjusting ring and the face plate and the maximum torque transmitting capacity of the clutch, can be set by varying the effective length of the lever assembly supporting the pawl.
    • 自调节机构补偿了超中心离合器等的磨损,并且适于在离合器接合时机械地感测离合器磨损或松弛,并且在离合器脱离时补偿这种磨损或松弛。 自调节机构优选地包括相对耐用和简单的棘轮机构,其包括安装在调节环上的齿和安装在离合器面板上的棘爪。 棘爪在离合器接合时缩回由调节环和面板之间的间隙厚度确定的量,该量至少部分地取决于离合器磨损,并且在离合器脱离接合时前进相等的量。 松弛调整发生在棘爪在收回时接合新牙齿,然后在离合器分离时前进,以驱动齿并因此调节环在轮毂上旋转。 可以通过改变支撑棘爪的杠杆组件的有效长度来设定棘爪的最大行程,从而调节环和面板之间的最小调节间隙和离合器的最大扭矩传递能力。