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    • 2. 发明申请
    • METHOD AND DEVICE FOR OPERATING AN ELECTRIC HAND TOOL DRIVEN BY AN ELECTRIC MOTOR
    • 用于操作电动机的方法和装置驱动的电动手工具
    • WO2012079936A2
    • 2012-06-21
    • PCT/EP2011070791
    • 2011-11-23
    • BOSCH GMBH ROBERTWIRNITZER BERNDKOEDER THILOMOCK STEFAN
    • WIRNITZER BERNDKOEDER THILOMOCK STEFAN
    • B25F5/00H02P29/60H02P29/68
    • The invention relates to a method for operating an electric hand tool (10) driven by an electric motor, comprising an overload protection for protecting at least one component (12, 30) of the electric hand tool (10) against thermal overload. According to the invention, during the operation of the electric hand tool (10), a current thermal energy content of the component (12, 30) is determined on the basis of a current energy inflow (E_i) and a current energy outflow (E_o) and is compared to a thermal model of the at least one component (12, 30), wherein the electric hand tool (10) is switched off when a critical value (T_krit) of the energy content is reached and/or exceeded, and wherein, at least in a range close to the critical value (T_krit), the energy inflow (E_i) and/or the energy outflow (E_o) are controlled by means of closed loop or open loop control depending on at least one operating parameter which influences the thermal energy content of the at least one component (12, 30).
    • 本发明涉及一种用于保护电动手持工具(10)对热过载中的至少一个构件(12,30)操作电动马达驱动的手持式工具(10)与过负荷保护装置的方法。 所以建议从当前供给口(E_i)和所确定的当前功率消耗(E_o)的部件的当前热能含量(12,30),并且所述手持式电动工具(10)的操作(与所述至少一个部件12的热模型中, 30)与电动手用工具(10)在达到和/或超过的能量含量的临界值(T_krit)相比被关断,并且其中至少(在靠近电源(E_i)和/或功率消耗的临界值T_krit)的区域 (E_o)取决于其影响所述至少一个构件(12,30)的热能内容的至少一个操作参数调节或控制。