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热词
    • 8. 发明授权
    • Automatic shaft lock
    • 自动轴锁
    • US5984022A
    • 1999-11-16
    • US112728
    • 1998-07-09
    • William G. Harman, Jr.Michael F. CannaliatoDale K. Wheeler
    • William G. Harman, Jr.Michael F. CannaliatoDale K. Wheeler
    • B25B21/00B25F5/00B25B17/00
    • B25F5/001B25B21/00
    • An automatic shaft lock is incorporated into the transmission or drive components of a power driving tool of the type commonly used to tighten or loosen threaded fasteners, for example. The automatic shaft lock operates to prevent an externally-applied rotational back-force or back-torque, such as results from use of the tool to manually tighten or loosen a fastener, from being transmitted all the way through the drive components to the tool's motor or armature shaft. The shaft lock also effectively reduces the amount of back-torque, functioning automatically in either rotational direction, due to being disposed at an intermediate location in the drive train, between an intermediate gear enmeshed for driving rotation with the tool's armature shaft and an output gear enmeshed in a driving relationship with the tool's output shaft.
    • 例如,通常用于拧紧或松开螺纹紧固件的动力驱动工具的变速器或驱动部件中并入有自动轴锁。 自动轴锁操作以防止外部施加的旋转后退力或反向扭矩(例如由于使用工具来手动地拧紧或松开紧固件而导致的)不被传递到驱动部件到工具的马达 或电枢轴。 轴锁还有效地减少了由于设置在传动系中的中间位置处,用于与工具的电枢轴驱动旋转的中间齿轮与输出齿轮之间的旋转方向自动地起作用的反向扭矩的量 与工具的输出轴处于驱动关系。