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    • 1. 发明授权
    • Terminal protection system for portable power tools
    • 便携式电动工具端子保护系统
    • US06237698B1
    • 2001-05-29
    • US09521560
    • 2000-03-09
    • David CarrierSamuel G. WoodsChris YahnkerZollie W. Privett
    • David CarrierSamuel G. WoodsChris YahnkerZollie W. Privett
    • H02P700
    • B25F5/02B25F5/008H02H7/0852H02J7/0044H02M2003/1555H02P7/288Y10T307/625
    • A thermal control circuit (49) for inexpensively protecting the power interface of cordless and dual-mode powered devices (12), such as hand-held power tools and appliances. The powered device includes a motor (11) that is operable in a preselected voltage range. A switch assembly (110) controls the flow of electrical energy to the motor (11). A power module (14, 16) is configured to supply electric power and to mate with the low-voltage DC power tool (12). The power module (14, 16) is adapted to provide a DC voltage in the preselected voltage range suitable for powering the low-voltage DC power tool (12). A case (91) for the power tool (12) has a pre-defined envelope for electrically and mechanically mating with the power module (14, 16). A power interface that includes at least two terminals, electrically couples the power module (14, 16) to the motor (11). The thermal control circuit (49) protects the power interface from damage caused by an overtemperature level. The thermal control circuit (49), in response to detecting an operating temperature that exceeds the overtemperature level, permanently interrupts the flow of electricity from the power module (14, 16) to the motor (11).
    • 一种用于廉价地保护无绳和双模式动力装置(12)的电力接口的热控制电路(49),例如手持电动工具和电器。 动力装置包括可在预选电压范围内操作的电动机(11)。 开关组件(110)控制到电动机(11)的电能的流动。 电源模块(14,16)被配置为提供电力并与低压DC电动工具(12)配合。 功率模块(14,16)适于提供适于为低压DC电动工具(12)供电的预选电压范围内的DC电压。 用于电动工具(12)的壳体(91)具有预定义的用于与功率模块(14,16)电气和机械配合的封套。 一种电源接口,包括至少两个端子,将电源模块(14,16)电连接到电动机(11)。 热控制电路(49)保护电源接口免受过热等级的损害。 热控制电路(49)响应于检测到超过温度水平的工作温度,永久地中断从电力模块(14,16)到电动机(11)的电流。
    • 5. 发明授权
    • Electrically isolated module
    • 电隔离模块
    • US06731503B2
    • 2004-05-04
    • US10300132
    • 2002-11-20
    • Zollie W. PrivettBrian R. CrowellRobert J. Opsitos, Jr.
    • Zollie W. PrivettBrian R. CrowellRobert J. Opsitos, Jr.
    • H05K720
    • H05K7/209H01H9/061H01H9/52H01L2924/0002H01L2924/00
    • An electronic control module provides dual insulation layers between an internal line voltage and a separate tool housing that serves as a heat sink, thereby allowing versatility in mounting the electronic control module within the tool housing interior, and thereby also eliminating the risk of electrical shock to a user making contact with an exterior tool housing surface. The control module includes a power device, connected to a line voltage, and a thermal pad. The power device provides a first layer of electrical insulation between the line voltage and an external tab of the power device while the thermal pad provides a second layer of electrical insulation. The combined first and second layers provide a minimum amount of electrical insulation between the line voltage and the tool housing thereby preventing electrical shock. Alternatively, the thermal pad is provided between the control module and the tool housing.
    • 电子控制模块在内部线路电压和用作散热器的单独的工具外壳之间提供双重绝缘层,从而允许将电子控制模块安装在工具外壳内部的通用性,从而也消除了电击的风险 用户与外部工具外壳表面接触。 控制模块包括连接到线路电压的功率器件和散热焊盘。 功率器件在线路电压和功率器件的外部接线片之间提供第一层电绝缘,同时热垫提供第二层电绝缘。 组合的第一和第二层在线路电压和工具壳体之间提供最小量的电绝缘,从而防止电击。 或者,散热垫设置在控制模块和工具壳体之间。
    • 7. 发明授权
    • Electrically isolated module
    • 电隔离模块
    • US06920047B2
    • 2005-07-19
    • US10790580
    • 2004-03-01
    • Zollie W. PrivettBrian R. Crowell
    • Zollie W. PrivettBrian R. Crowell
    • B25F5/00B25F5/02H01H9/06H01H9/52H01L23/36H05K7/20
    • H05K7/209H01H9/061H01H9/52H01L2924/0002H01L2924/00
    • An electronic control module provides dual insulation layers between an internal line voltage and a separate tool housing that serves as a heat sink, thereby allowing versatility in mounting the electronic control module within the tool housing interior, and thereby also eliminating the risk of electrical shock to a user making contact with an exterior tool housing surface. The control module includes a power device, connected to a line voltage, and a thermal pad. The power device provides a first layer of electrical insulation between the line voltage and an external tab of the power device while the thermal pad provides a second layer of electrical insulation. The combined first and second layers provide a minimum amount of electrical insulation between the line voltage and the tool housing thereby preventing electrical shock. Alternatively, the thermal pad is provided between the control module and the tool housing.
    • 电子控制模块在内部线路电压和用作散热器的单独的工具外壳之间提供双重绝缘层,从而允许将电子控制模块安装在工具外壳内部的多功能性,从而也消除了电击的风险 用户与外部工具外壳表面接触。 控制模块包括连接到线路电压的功率器件和散热焊盘。 功率器件在线路电压和功率器件的外部接线片之间提供第一层电绝缘,同时热垫提供第二层电绝缘。 组合的第一和第二层在线路电压和工具壳体之间提供最小量的电绝缘,从而防止电击。 或者,散热垫设置在控制模块和工具外壳之间。