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    • 9. 发明申请
    • Impact drill
    • 冲击钻
    • US20050028995A1
    • 2005-02-10
    • US10912098
    • 2004-08-06
    • Takuma SaitoShinki OhtsuJyunichi ToukairinKenji KataokaKazuhide OhzekiShigeru IshikawaHideki Watanabe
    • Takuma SaitoShinki OhtsuJyunichi ToukairinKenji KataokaKazuhide OhzekiShigeru IshikawaHideki Watanabe
    • B23B45/16B25D17/24B25F5/00B25D15/00
    • B25D17/24B25D2211/064B25F5/001
    • An impact drill minimizing transmission of vibration to a handle gripped by a user's hand. A spindle extends through a main frame and is movable in its axial direction and rotatable about its axis. A first ratchet is rotatable and axially movable together with the spindle. A second ratchet is axially movable but unortatable. The first ratchet has a first serrated surface and the second ratchet has a second serrated surface in confrontation with the first serrated surface. In an impact drilling mode, the first serrated surfaces is brought into abutment with the second serrated surface so that the spindle is reciprocally moved in the axial direction. A first spring is interposed between the main frame and the second ratchet to urge the second ratchet toward the first ratchet. A second spring is interposed between the main frame and the second ratchet to urge the second ratchet away from the first ratchet. In the impact drilling mode, the second ratchet is always out of contact from the main frame and is floatingly maintained within the main frame.
    • 冲击钻最小化由用户的手握住的手柄的振动传播。 主轴延伸穿过主框架并且可以在其轴向方向上移动并且可围绕其轴线旋转。 第一棘轮可旋转并与主轴一起轴向移动。 第二棘轮是可轴向移动的,但不可调节。 第一棘轮具有第一锯齿状表面,第二棘轮具有与第一锯齿状表面对置的第二锯齿状表面。 在冲击钻削模式中,第一锯齿状表面与第二锯齿状表面邻接,使得主轴沿轴向往复运动。 第一弹簧设置在主框架和第二棘轮之间,以将第二棘轮推向第一棘轮。 第二弹簧设置在主框架和第二棘轮之间,以将第二棘轮推离第一棘轮。 在冲击钻削模式中,第二棘轮总是与主框架脱离接触,并且浮动地保持在主框架内。