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    • 98. 发明公开
    • Power tool with force sensing electronic clutch
    • 带力感应电子离合器的电动工具
    • EP2604988A2
    • 2013-06-19
    • EP12189909.0
    • 2012-10-25
    • Black & Decker Inc.
    • Murthy, Sankarshan NPuzio, DanielSchell, Craig AlanHowson, JohnGottesman, TalEshleman, Scott J.Hester, Russell DavidSchwartz, Daniel L.
    • G01L1/20H01C10/10
    • B25B21/00B25B23/14B25B23/147G01L5/0042G01L5/0061Y10T477/757
    • A power tool includes a housing, a motor (20) disposed in the housing (12), a transmission (22) disposed in the housing (12) and coupled to the motor (20), an output end effector (24) coupled to the transmission (22), a control circuit for controlling power delivery from a power source (16) to the motor (20), and a force sensing electronic clutch including a force sensor coupled to a substantially stationary element of the transmission (22). The force sensor senses a reaction torque transmitted from the end effector (24) to at least a portion of the transmission (22). The sensor is configured to generate a first electronic signal corresponding to an amount of the reaction torque. The control circuit compares the first electronic signal with a second electronic signal corresponding to a desired threshold torque value, and initiates a protective operation when a value of the first electronic signal indicates that the reaction torque has exceeded the desired threshold torque value.
    • 一种电动工具,包括壳体,设置在壳体(12)中的电动机(20),设置在壳体(12)中并连接到电动机(20)的变速器(22),输出端部执行器(24) 所述变速器(22),用于控制从动力源(16)到所述电动机(20)的动力传递的控制电路以及包括与所述变速器(22)的基本静止的元件相连的力传感器的力传感电子离合器。 力传感器感测从末端执行器(24)传递到变速器(22)的至少一部分的反作用转矩。 传感器被配置为产生与反作用力矩量相对应的第一电子信号。 控制电路将第一电子信号与对应于期望阈值转矩值的第二电子信号进行比较,并且当第一电子信号的值指示反作用转矩已经超过期望阈值转矩值时开始保护操作。