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    • 7. 发明授权
    • Power smoothing crank arm
    • 电动平滑曲柄臂
    • US09403576B2
    • 2016-08-02
    • US13962142
    • 2013-08-08
    • Willem den Boer
    • Willem den Boer
    • B62M3/00
    • B62M3/00Y10T74/2168
    • A crank arm for a pedal-driven vehicle is described herein. The crank arm includes a first member that pivots about a crank axis of the pedal-driven vehicle and a second member rotationally coupled to the first member and configured to receive a pedal. The crank arm further includes a spring assembly configured to bias the second member towards a neutral rotation configuration relative to the first member and to resist rotation of the second member away from the neutral rotation configuration, wherein a distance between the crank axis and the pedal interface is greater than a distance between the crank axis and the member pivot point when the second member is in the neutral rotation configuration.
    • 本文描述了用于踏板驱动车辆的曲柄臂。 曲柄臂包括围绕踏板驱动车辆的曲柄轴线枢转的第一构件和旋转地联接到第一构件并构造成接收踏板的第二构件。 曲柄臂还包括弹簧组件,其构造成相对于第一构件偏压第二构件朝向中性旋转构造并且阻止第二构件远离中立旋转构型的旋转,其中曲柄轴和踏板接口之间的距离 大于当第二构件处于中立旋转构型时曲柄轴和构件枢转点之间的距离。