公开(公告)号：US09246416B2

公开(公告)日：2016-01-26

申请号：US13895890

申请日：2013-05-16

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka Ichikawa

IPC: H02P3/12 ,  H02P3/06 ,  H02P3/22 ,  H02P6/24

CPC classification number: H02P3/06 ,  H02P3/22 ,  H02P6/24

Abstract: A braking apparatus for a three-phase brushless motor is provided in a motor-driven appliance, and includes a switching circuit having six switching elements and a brake control device. The brake control device executes two-phase short-circuit control in braking control in which a braking force is generated in the motor. In the two-phase short-circuit control, an on/off state of each of the switching elements is set in such a manner that two out of three conduction paths constituting one of a positive electrode side conduction path that connects three terminals of the motor and a positive electrode side of a direct current power source and a negative electrode side conduction path that connects the three terminals and a negative electrode side of the power source are in a conducting state and other of the three conduction paths is in a non-conducting state.

Abstract translation: 一种用于三相无刷电动机的制动装置设置在电动机具中，并且包括具有六个开关元件和制动控制装置的开关电路。 制动控制装置在电动机中产生制动力的制动控制中进行两相短路控制。 在两相短路控制中，每个开关元件的导通/截止状态被设置成使三个导通路径中的两个构成连接电动机的三个端子的正极侧导电路径之一 直流电源的正极侧和连接电源的三个端子和负极侧的负极侧导电路径处于导通状态，三个导通路径中的另一个处于不导通状态 州。

公开(公告)号：US09190947B2

公开(公告)日：2015-11-17

申请号：US13760435

申请日：2013-02-06

Applicant: MAKITA CORPORATION

Inventor： Kenya Yanagihara ,  Yoshitaka Ichikawa ,  Motohiro Omura ,  Yutaka Matsunaga

IPC: H02P6/00 ,  H02P23/08 ,  H02P23/00 ,  B25F5/00

CPC classification number: H02P23/08 ,  B25F5/00 ,  H02P23/00

Abstract: An electric power tool according to the present invention is provided with a tool main body, an induction motor, a power supply unit, and an inverter. The power supply unit and the inverter are integrally incorporated in the tool main body together with the induction motor.

Abstract translation: 根据本发明的电动工具设置有工具主体，感应电动机，电源单元和逆变器。 电源单元和逆变器与感应电动机一体地并入工具主体。