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    • 3. 发明授权
    • Control collar and bearing support for power tool shaft
    • 电动工具轴的控制支架和轴承支撑
    • US3736992A
    • 1973-06-05
    • US3736992D
    • 1971-07-14
    • BLACK & DECKER MFG CO
    • ZANDER ROSTWALD ESIDES D
    • B23B45/16B25D11/10B25D16/00E02D7/02
    • B25D16/00B25D16/006B25D2211/064B25D2211/067
    • A portable electric tool having a motor supported within a housing and adapted to rotate an output shaft. A toothed, hammer member is fixed to the output shaft and, when engaged with a stationary toothed member, imparts longitudinal impact blows to the output shaft during rotation thereof. An adjustable collar supports the shaft in the tool housing and is operable, in one position of adjustment, to allow the toothed members to engage, and in another adjusted position, to prevent the toothed members from engaging. The collar embodies a novel, simplified construction and is frictionally retained in position during use of the tool. In addition, a novel bearing arrangement is provided between the collar and the shaft to insure proper lubrication of the shaft during use of the tool.
    • 一种便携式电动工具,其具有支撑在壳体内并适于旋转输出轴的马达。 齿形的锤构件固定到输出轴上,并且当与固定的齿形构件接合时,在其旋转期间将纵向冲击吹送到输出轴。 可调套环支撑工具壳体中的轴,并且在一个调整位置中可操作,以允许齿形构件接合,并且在另一调节位置,以防止齿形构件接合。 衣领体现了一种新颖的,简化的结构,并在使用工具时摩擦保持在适当的位置。 此外,在轴环和轴之间提供了一种新颖的轴承装置,以确保在使用工具期间轴的适当润滑。