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    • 9. 发明申请
    • APPARATUS WITH ACTIVE SOFTWARE CLAMPING OF SUPPLY VOLTAGE
    • 具有主动软件钳位电源的装置
    • US20140225544A1
    • 2014-08-14
    • US14176812
    • 2014-02-10
    • Milwaukee Electric Tool Corporation
    • Matthew J. Mergener
    • H02P6/00
    • H02P29/0241B25D17/00B25D2250/091B25D2250/221B25F5/00G01R19/165H02H7/0833H02P6/14H02P6/16H02P6/17
    • A power tool that includes a motor configured to drive a working element, a power supply that is coupled to the motor to provide power to the motor, a shunt circuit that is coupled to the power supply and the motor, and a controller. The shunt circuit includes a shunt switch and a shunt element and is configured to hold a voltage of the power supply below a high voltage threshold. The shunt switch is switchable between a conducting state, in which the shunt switch conducts current through the shunt element, and a non-conducting state, in which the shunt switch does not conduct current through the shunt element. The controller is coupled to the motor, the power supply, and the shunt circuit and is configured to determine the voltage of the power supply, and control the shunt switch based on the voltage from the power supply.
    • 一种电动工具,其包括被配置为驱动工作元件的电动机,耦合到所述电动机以向所述电动机供电的电源,耦合到所述电源和所述电动机的分流电路以及控制器。 分流电路包括分流开关和并联元件,并且被配置为将电源的电压保持在高电压阈值以下。 分流开关可以在分流开关通过分流元件导通电流的导通状态和不连通开关不通过分流元件导通电流的非导通状态之间切换。 控制器耦合到电动机,电源和分流电路,并且被配置为确定电源的电压,并且基于来自电源的电压来控制分流开关。
    • 10. 发明公开
    • Lockable trigger button for hammer drill
    • Verriegelbare Drucktastefüreinen Bohrhammer
    • EP1640118A1
    • 2006-03-29
    • EP04255746.2
    • 2004-09-22
    • Black & Decker Inc.
    • Kunz, Michael, c/o Black & Decker Gmbh
    • B25F5/00B25F5/02H01H13/08H01H13/62
    • H01H3/20B25D17/00B25D2250/091B25D2250/261H01H9/06H01H13/08
    • A hammer drill, in particular a chipper comprising: a body 2 having at least one support handle 4; an electric motor mounted within the body 2 ;an electric switch 22, capable of being switched on and off by a trigger button 8 connected to it, to activate or deactivate respectively the electric motor, wherein the trigger button 8 is moveable between two positions, a first position where the electric switch 22 is off and a second position where the electric switch 22 is on; a locking arm 38 moveably mounted on the electric switch 22 which, when the trigger button 8 is located in its second position, is moveable between two positions, a first position where it is disengaged from the trigger button 8 and a second position where it engages with the trigger button 8 and holds the trigger button 8 in its second position. When the locking arm is in its second position it causes the hammer to remain switch on even if the operator removes their fingers from the trigger button.
    • 锤钻,特别是切屑机,包括:具有至少一个支撑手柄4的主体2; 安装在主体2内的电动马达;能够通过与其连接的触发按钮8接通和断开的电开关22,分别启动或停用电动马达,其中触发按钮8可在两个位置之间移动, 电开关22断开的第一位置和电开关22接通的第二位置; 可移动地安装在电开关22上的锁定臂38,当触发按钮8位于其第二位置时,其可在两个位置之间移动,其中第一位置与触发按钮8脱离,第二位置接合 触发按钮8并将触发按钮8保持在其第二位置。 当锁定臂处于其第二位置时,即使操作者从触发按钮上移开手指,也会使锤子保持开启。