公开(公告)号：US11407091B2

公开(公告)日：2022-08-09

申请号：US17028058

申请日：2020-09-22

Applicant: MAKITA CORPORATION

Inventor： Ryunosuke Kumagai ,  Akira Tomonaga ,  Kazuya Arakawa

IPC: B25F5/02 ,  B25B21/02 ,  B25D11/10 ,  B25D11/04 ,  B25F5/00 ,  F16H3/54

Abstract: A power tool includes a motor disposed in a motor housing, a handle extending downward from the motor housing, a main switch provided on the handle and configured to switch the motor ON and OFF, and a state-changing operation part located on a lower portion of the motor housing or on an upper-end portion of the handle. The state-changing operation part is located upward of the main switch and is configured to effect a change of a rotational state of the motor, other than a direction of rotation of the motor, or an illumination level of a light.

公开(公告)号：US11247323B2

公开(公告)日：2022-02-15

申请号：US16056717

申请日：2018-08-07

Applicant: MAKITA CORPORATION

Inventor： Ryunosuke Kumagai ,  Masahiro Watanabe ,  Jiro Suzuki ,  Kosuke Ito

IPC: B25B23/151 ,  B25F5/00 ,  B25B21/00 ,  B25B23/147 ,  H02P6/08 ,  B25B21/02 ,  H02K7/14 ,  H02P27/04

Abstract: An electric working machine in one aspect of the present disclosure includes a motor, a setter, and a controller. The setter is configured to modifiably set a change characteristic in changing a rotational state of the motor from a low speed rotation to a high speed rotation. The high speed rotation is greater than the low speed rotation in rotational frequency of the motor.

公开(公告)号：US10906163B2

公开(公告)日：2021-02-02

申请号：US16654461

申请日：2019-10-16

Applicant: MAKITA CORPORATION

Inventor： Hidenori Nagasaka ,  Ryunosuke Kumagai ,  Koji Tsukamoto ,  Tomonori Kawase ,  Kosuke Ito ,  Tokuo Hirabayashi ,  Yasuhito Kawai

IPC: B25B23/00 ,  B25B23/147 ,  H02K7/14 ,  B25F5/02 ,  H02K11/33 ,  B25B21/02 ,  H01H13/02 ,  H01H13/08

Abstract: A power tool includes a tool-main-body part, an electric motor as a drive source, a grip part, which extends downward from the tool-main-body part and is configured to be gripped by a user, and a power-supply unit at a tip of the grip part. The power tool includes a controller configured to control the operation of the electric motor, the controller being located on the power-supply unit, and a display controlled by the controller and configured to indicate an operating state of the electric motor. The controller and the display each have a flat-plate shape and are disposed along a surface direction with respect to one another, and the display includes a first portion that overlies the controller and a second portion that projects beyond an end edge of the controller.

公开(公告)号：US10478950B2

公开(公告)日：2019-11-19

申请号：US15356862

申请日：2016-11-21

Applicant: MAKITA CORPORATION

Inventor： Hidenori Nagasaka ,  Ryunosuke Kumagai ,  Koji Tsukamoto ,  Tomonori Kawase ,  Kosuke Ito ,  Tokuo Hirabayashi ,  Yasuhito Kawai

IPC: B25B23/147 ,  H02K11/33 ,  B25B21/02 ,  H01H13/02 ,  H01H13/08 ,  B25F5/02 ,  B25B23/00 ,  H02K7/14

Abstract: A power tool includes a tool-main-body part, an electric motor as a drive source, a grip part, which extends downward from the tool-main-body part and is configured to be gripped by a user, and a power-supply unit at a tip of the grip part. The power tool includes a controller configured to control the operation of the electric motor, the controller being located on the power-supply unit, and a display controlled by the controller and configured to indicate an operating state of the electric motor. The controller and the display each have a flat-plate shape and are disposed along a surface direction with respect to one another, and the display includes a first portion that overlies the controller and a second portion that projects beyond an end edge of the controller.

公开(公告)号：US20150135907A1

公开(公告)日：2015-05-21

申请号：US14404261

申请日：2013-05-20

Applicant: MAKITA CORPORATION

Inventor： Tokuo Hirabayashi ,  Ryunosuke Kumagai ,  Takeshi Nishimiya ,  Goshi Ishikawa ,  Takuya Kusakawa

IPC: B25B21/00 ,  B23Q5/04 ,  B23Q15/12

CPC classification number: B25B21/008 ,  B23Q5/048 ,  B23Q15/12 ,  B25B21/02 ,  B25B23/1475

Abstract: A power tool of one aspect for tightening a screw to a tightening-target-object is provided with a motor as a drive force. A motor controlling device controls the motor so as to make rotational frequency of the motor in accordance with an input operation received by an input-operation receiving unit. A first setting unit sets a maximum rotational frequency to a given first maximum rotational frequency when the motor is initiated. If the power tool clears a given condition for increasing rotational frequency after the motor is initiated, a second setting unit sets the maximum rotational frequency to a given second maximum rotational frequency that is larger than the first maximum rotational frequency.

Abstract translation: 将用于将螺钉拧紧到紧固目标物体的一个方面的电动工具设置有作为驱动力的电动机。 电动机控制装置控制电动机，以便根据由输入操作接收单元接收到的输入操作使电动机的转速变化。 当电动机起动时，第一设定单元将最大转动频率设定为给定的第一最大转速。 如果电动工具在电动机起动之后清除用于增加转速的给定条件，则第二设定单元将最大转动频率设定为大于第一最大转速的给定第二最大转速。