公开(公告)号：US20180205244A1

公开(公告)日：2018-07-19

申请号：US15742107

申请日：2016-05-13

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka ICHIKAWA ,  Takuya KUSAKAWA ,  Hideki KACHI

IPC: H02J7/00 ,  H01H9/06 ,  B25F5/02

CPC classification number: H02J7/0032 ,  B25F5/00 ,  B25F5/02 ,  H01H9/06 ,  H02J7/0036 ,  H02J2007/004 ,  H02J2007/0067

Abstract: A hand-held electric power tool includes a main power SW provided in a motor housing, a trigger SW provided in a grip portion that protrudes from the motor housing, and a controller. The controller switches an operation mode to one of a drive enabled mode in which driving of the motor is enabled and a drive disabled mode in which driving of the motor is disabled, in accordance with a switching command from the main power SW. In the drive enabled mode, driving of the motor is controlled in accordance with a driving command input from the trigger SW. The controller switches the operation mode to the drive disabled mode in response to the driving of the motor being stopped due to stopping input of the drive command from the trigger SW.

公开(公告)号：US20160190960A1

公开(公告)日：2016-06-30

申请号：US14978697

申请日：2015-12-22

Applicant: MAKITA CORPORATION

Inventor： Yuki KAWAI ,  Yoshitaka ICHIKAWA ,  Hirokatsu YAMAMOTO ,  Ying YANG

IPC: H02P6/00 ,  H02P6/14

CPC classification number: H02P6/157 ,  H02P6/085 ,  H02P6/14 ,  H02P27/08 ,  H02P2201/03

Abstract: A motor-driven apparatus in one aspect of the present disclosure includes: a brushless motor; a full-wave rectifier circuit; a drive circuit; a controller; and a forcible stop unit. The forcible stop unit performs a forcible stop control to temporarily forcibly stop a switching operation of a plurality of switching elements during a stop period when a full-wave rectified voltage is smaller than an induced voltage generated by a plurality of coils, and the switching operation of the plurality of switching elements is to be stopped.

Abstract translation: 本公开的一个方面的电动驱动装置包括：无刷电动机; 全波整流电路; 驱动电路; 控制器 和强制停机单元。 强制停止单元执行强制停止控制，以在全波整流电压小于由多个线圈产生的感应电压的停止期间临时强制停止多个开关元件的开关动作，并且开关动作 要停止多个开关元件。

公开(公告)号：US20130207590A1

公开(公告)日：2013-08-15

申请号：US13760435

申请日：2013-02-06

Applicant: MAKITA CORPORATION

Inventor： Kenya YANAGIHARA ,  Yoshitaka ICHIKAWA ,  Motohiro OMURA ,  Yutaka MATSUNAGA

IPC: H02P23/08 ,  H02P23/00

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。

公开(公告)号：US20220393619A1

公开(公告)日：2022-12-08

申请号：US17889109

申请日：2022-08-16

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka ICHIKAWA

IPC: H02P1/12 ,  H02P29/00 ,  H02J7/00 ,  H01M10/48

Abstract: An electric working machine in one aspect of the present disclosure includes a motor and a controller. The motor is configured to be electrically coupled to a battery pack and to be driven with electric power from the battery pack. The controller is configured to acquire an internal resistance information of the battery pack and to change control of the motor based on the internal resistance information acquired.

公开(公告)号：US20220123565A1

公开(公告)日：2022-04-21

申请号：US17275504

申请日：2019-09-12

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka ICHIKAWA ,  Akihiro NAKAMOTO ,  Minoru GYODA ,  Hayato KANO ,  Toru YAMADA ,  Hitoshi SUZUKI

IPC: H02J7/00 ,  H02P3/06

Abstract: A battery pack is configured to supply electric power to an electric work machine, such as a power tool or outdoor power equipment. The battery pack includes a first battery-signal terminal and a second battery-signal terminal. The first battery-signal terminal outputs, to the electric work machine, a first signal indicating that discharging is to be prohibited or permitted. The second battery-signal terminal outputs, to the electric work machine, a second signal indicating that discharging is to be prohibited or permitted. Thus, two communication paths are provided for transmitting signals to permit or prohibit discharging of the battery pack.

公开(公告)号：US20150372633A1

公开(公告)日：2015-12-24

申请号：US14744721

申请日：2015-06-19

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka MACHIDA ,  Yoshitaka ICHIKAWA

IPC: H02P29/00 ,  B25D16/00 ,  H02P7/18

CPC classification number: H02P29/20 ,  B23D51/16 ,  B23D59/001 ,  B25D11/00 ,  B25D16/00 ,  B25D16/006 ,  B25D2250/201 ,  B25D2250/221 ,  H02P7/18

Abstract: A hammer drill (100) comprises an electric motor (110), a piston (127) as a driving member and a controller (199) which controls and drives the electric motor (110). The piston (127) is reciprocated by rotation of the electric motor (110) and thereby a hammer bit (119) is driven in its longitudinal direction. The hammer bit (119) is moved forward in response to a forward movement stroke of the piston (127) and thereby a hammering operation is performed by the hammer bit (119). The controller (199) sets a duty ratio of a driving pulse signal which drives the electric motor (110) in the forward movement stroke of the piston (127) to be larger in order to prevent a reduction of a rotation speed of the electric motor (110) due to a load applied on the electric motor (110) during the forward movement stroke of the piston (127).

Abstract translation: 锤钻（100）包括电动机（110），作为驱动构件的活塞（127）和控制和驱动电动机（110）的控制器（199）。 活塞（127）通过电动机（110）的旋转而往复运动，从而使锤头（119）在其长度方向上被驱动。 响应于活塞（127）的向前移动行程，锤钻头（119）向前移动，从而通过锤钻头（119）执行锤击操作。 控制器（199）将活塞（127）的前进行程中驱动电动机（110）的驱动脉冲信号的占空比设定得较大，以防止电动机的转速降低 （110）在活塞（127）的向前移动行程期间由于施加在电动机（110）上的负载而产生。

公开(公告)号：US20140165946A1

公开(公告)日：2014-06-19

申请号：US14097366

申请日：2013-12-05

Applicant: MAKITA CORPORATION

Inventor： Kenya YANAGIHARA ,  Hideo KAWASHIMA ,  Yoshitaka ICHIKAWA ,  Shinji HIRABAYASHI

IPC: F02B63/02

Abstract: To attain further rationalization in a power tool in which a tool bit is driven by an engine. During driving of the saw chain, when the user returns a throttle lever to its initial position by releasing only the throttle lever while keeping pressing a throttle lock lever, or when the user returns the throttle lever to the initial position by releasing the throttle lever and releases the throttle lock lever, driving of an engine is stopped. Thus, further rationalization can be attained in the power tool.

Abstract translation: 为了在由发动机驱动工具钻头的电动工具中进一步合理化。 在锯链的驱动期间，当使用者在保持按压节气门锁杆的同时仅释放节流杆而返回节流杆至其初始位置时，或者当用户通过释放节流杆而将节流杆返回初始位置时， 释放油门锁杆，停止发动机的行驶。 因此，在电动工具中可以进一步合理化。

公开(公告)号：US20230318314A1

公开(公告)日：2023-10-05

申请号：US18126584

申请日：2023-03-27

Applicant: MAKITA CORPORATION

Inventor： Tadahiko KOBAYAKAWA ,  Hayato KANO ,  Yoshitaka ICHIKAWA

IPC: H02J7/00 ,  H01M10/46 ,  A01D34/78 ,  H01M10/48 ,  H02P23/14 ,  H01M10/42 ,  A01D101/00 ,  A01D34/90

CPC classification number: H02J7/0013 ,  H02J7/007182 ,  H02J7/00045 ,  H01M10/46 ,  A01D34/78 ,  H02J7/0047 ,  H01M10/486 ,  H02J7/0063 ,  H02P23/14 ,  H02J7/007194 ,  H01M2010/4278 ,  A01D2101/00 ,  A01D34/90 ,  H01M2220/30

Abstract: A system in one aspect of the present disclosure includes a battery pack and an electric work machine. The battery pack includes a battery, a first interface, a first memory and a first controller. The first controller is configured to transmit battery data identifying a type of the battery pack. The electric work machine includes a motor, a second interface, a switching element, a manual switch, a second memory and a second controller. The second controller is configured to transmit electric apparatus data identifying a type of the electric work machine.

公开(公告)号：US20210213593A1

公开(公告)日：2021-07-15

申请号：US17145965

申请日：2021-01-11

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka ICHIKAWA ,  Takuya KUSAKAWA

IPC: B25B23/147 ,  B25B21/02 ,  B25F5/00

Abstract: An electric powered work machine in one aspect of the present disclosure includes a motor, a tool driver, a command receiver, a diagnosis circuit, and a result transmitter. The diagnosis circuit executes a failure diagnosis of the electric powered work machine in response to the command receiver receiving a diagnosis command signal from a diagnosis device. The result transmitter transmits a diagnosis result signal to the diagnosis device. The diagnosis result signal indicates a result of the failure diagnosis that is executed by the diagnosis circuit.

公开(公告)号：US20170133965A1

公开(公告)日：2017-05-11

申请号：US15339327

申请日：2016-10-31

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka ICHIKAWA ,  Ryunosuke KUMAGAI ,  Tokuo HIRABAYASHI

IPC: H02P23/14 ,  H02P27/08 ,  H02P6/17 ,  B25F5/00

CPC classification number: H02P23/14 ,  B25F5/00 ,  H02P6/17 ,  H02P27/08

Abstract: An electric working machine in one aspect of the present disclosure comprises a motor, a first operation unit, a control unit, a second operation unit, and a storage unit. The storage unit stores a reference speed that is set via the second operation unit. The control unit drives the motor at a rotation speed corresponding to a drive command from the first operation unit, in accordance with a control characteristic that is set based on the reference speed stored in the storage unit.