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    • 3. 发明申请
    • TORQUE WRENCH
    • 扭矩扳手
    • WO2011143315A2
    • 2011-11-17
    • PCT/US2011036082
    • 2011-05-11
    • DAGLOW TERRY
    • DAGLOW TERRY
    • A61B19/00A61B17/84A61F2/00B25B19/00B25B21/00
    • B25B23/1427
    • A torque wrench comprising a shaft with a longitudinal axis; wherein the shaft has a lower end and an upper end, the lower end being configured to engage a fastener. A shaft cam is configured to rotate with the shaft around the longitudinal axis. A groove is defined in the shaft cam, the groove comprising a groove upper surface. A ramp is positioned within the groove at a position below the groove upper surface, wherein the ramp comprises a ramp upper surface that is at an angle with respect to the longitudinal axis. A housing surrounds the shaft and shaft cam. The wrench comprises an outer cam comprising an engaging member extending within the housing, wherein the engaging member is configured to selectively contact ramp upper surface or groove upper surface. The wrench also comprises a spring configured to apply a downward force on the outer cam, such that the outer cam tends to prevent the shaft cam from rotating when the upper surface of the ramp is in contact with the engaging member of the outer cam. A void is defined in the groove between the ramp and a side wall of the groove, the void being configured to allow the engaging member to escape the groove when it is not constrained by the ramp.
    • 一种扭矩扳手,包括具有纵向轴线的轴; 其中所述轴具有下端和上端,所述下端构造成接合紧固件。 轴凸轮构造成随着轴围绕纵向轴线旋转。 在轴凸轮中限定有凹槽,所述凹槽包括凹槽上表面。 坡道位于凹槽上表面下方的一个位置内,其中斜坡包括相对于纵向轴线成一定角度的坡道上表面。 外壳围绕轴和轴凸轮。 扳手包括外凸轮,其包括在壳体内延伸的接合构件,其中接合构件构造成选择性地接触斜坡上表面或凹槽上表面。 扳手还包括构造成向外凸轮施加向下的力的弹簧,使得当斜面的上表面与外凸轮的接合构件接触时,外凸轮倾向于防止轴凸轮旋转。 在凹槽中的凹槽中限定了空隙,该凹槽在凹槽的侧壁之间,空隙构造成允许接合构件在不受斜坡约束的情况下从凹槽中逸出。