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    • 16. 发明授权
    • Depth adjusting system for a power tool
    • 电动工具深度调节系统
    • US5380132A
    • 1995-01-10
    • US119767
    • 1993-09-10
    • James R. Parks
    • James R. Parks
    • B25B23/00B25B21/00
    • B25B23/0064Y10T408/566Y10T408/8925Y10T408/99
    • A depth adjusting system particularly for power-driven screwdrivers comprising an adjustment collar that is releasably fitted to the housing of the tool and a depth locator which screws onto the collar. The adjustment collar has a forward cylindrical portion and an enlarged rearward cylindrical portion that includes a pair of diametrically opposed, axially extending cantilevered spring fingers for detachably connecting the adjustment collar to a circular opening in the housing. The free ends of the spring fingers are provided with a hook and groove that are adapted to engage and mate with a corresponding circumferential groove and rib in the housing opening, thereby permitting relative rotation of the adjustment collar to the housing which serves to set the relative axial position of the depth locator. The adjustment collar and depth locator subassembly may be removed from the housing without disturbing the depth setting by depressing the spring fingers sufficiently to release the hooks from the groove in the housing. The rearward facing ends of the hooks are preferably provided with chamfered cam surfaces so that the depth adjustment subassembly can be readily reinstalled onto the tool by inserting the rearward end of the adjustment collar into the opening in the tool housing until the hooks on the spring fingers snap into the groove in the housing.
    • 特别是用于动力驱动的螺丝刀的深度调节系统,包括可拆卸地装配到工具的壳体上的调节套环和螺钉到套环上的深度定位器。 调节套环具有前圆柱形部分和扩大的后圆柱形部分,其包括一对径向相对的轴向延伸的悬臂弹簧指,用于将调节环可拆卸地连接到壳体中的圆形开口。 弹簧指的自由端设置有钩和凹槽,其适于与壳体开口中的对应的周向凹槽和肋接合并配合,从而允许调节环相对于壳体的相对旋转,其用于将相对 深度定位器的轴向位置。 调节轴环和深度定位器子组件可以从壳体中移除,而不会通过充分地按压弹簧指头来扰乱深度设置,以将钩从壳体中的凹槽释放。 钩的朝后的端部优选地设置有倒角凸轮表面,使得深度调节子组件可以通过将调节环的后端插入工具壳体中的开口中而容易地重新安装到工具上,直到弹簧手指上的钩 卡入外壳中的凹槽。