Tool and tool holder for hand-tool apparatus
    1.
    发明授权
    Tool and tool holder for hand-tool apparatus 失效
    手动工具的工具和刀架

    公开(公告)号:US5397203A

    公开(公告)日:1995-03-14

    申请号:US90356

    申请日:1993-07-12

    摘要: The tool for a tool holder of hand tools used for chiseling and/or percussion drilling has a chucking shank (9). This chucking shank (9) is provided with two rotary driving grooves (10) which are located diametrically opposite one another and open axially toward the free end of the chucking shank (9). Also, the chucking shank (9) has two diametrically opposite, axially closed locking grooves (11). In order to increase the total working surface decisive for the transmission of torque, two longitudinal grooves (12) are provided which are likewise arranged diametrically opposite one another and open axially toward the free end of the chucking shank (9). The length of these longitudinal grooves (12) exceeds the length of the locking grooves (11). The axes of symmetry (L) of the longitudinal grooves (12) are arranged at an acute angle (a) to the axes of symmetry (V) of the locking grooves (11). In addition, the flanks (12a) of the longitudinal grooves on the driving side extend in a straight line and tangentially relative to the base of the locking grooves (11) so as to form optimal working surfaces for the transmission of torque.

    摘要翻译: 用于凿孔和/或敲击钻孔的手动工具的工具夹具的工具具有夹紧柄(9)。 该夹紧柄(9)设置有两个旋转驱动槽(10),两个旋转驱动槽(10)彼此沿径向相对并且朝向夹紧柄(9)的自由端轴向敞开。 此外,夹紧柄(9)具有两个直径相对的轴向闭合的锁定槽(11)。 为了增加转矩传递的总工作面,提供了两个纵向槽(12),它们同样地沿径向相对地布置,并且朝着夹紧柄(9)的自由端轴向地敞开。 这些纵向槽(12)的长度超过锁定槽(11)的长度。 纵向槽(12)的对称轴(L)以与锁定槽(11)的对称轴线(V)成锐角(a)的方式配置。 此外,驱动侧的纵向槽的侧面(12a)相对于锁定槽(11)的基部以直线和切线延伸,以形成用于扭矩传递的最佳工作表面。