公开(公告)号：US10974372B2

公开(公告)日：2021-04-13

申请号：US16251425

申请日：2019-01-18

Applicant: MAKITA CORPORATION

Inventor： Haruki Tejima ,  Tomoyuki Kondo ,  Kenji Abe ,  Koji Tsukamoto

IPC: B25B21/02 ,  B25B19/00

Abstract: An impact driver includes a hammer that is rotated by a motor and an anvil configured to be struck by the hammer to rotate the anvil about a rotational axis. A hammer case houses the hammer. Two or more bearings are provided inside the hammer case and support the anvil. To inhibit vibration of the anvil during operation, the bearings may be differing types, such as a regular ball bearing and an angular contact ball bearing, and/or the bearings may have different inner and/or outer diameters. A contact member, such as an O-ring, may be disposed in an insertion hole of the anvil to reduce vibrations that are transmitted to the tool bit.

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.