US 12,030,170 B2
Electric power tool
Hiroki Kaneko, Anjo (JP); Akira Mizutani, Anjo (JP); Ryosuke Otani, Anjo (JP); Shunpei Yamaji, Anjo (JP); Junya Ishikawa, Anjo (JP); and Fumiyoshi Saito, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Appl. No. 17/640,643
Filed by MAKITA CORPORATION, Anjo (JP)
PCT Filed Aug. 6, 2020, PCT No. PCT/JP2020/030217
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/044799, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 2019-162965 (JP), filed on Sep. 6, 2019.
Prior Publication US 2023/0011055 A1, Jan. 12, 2023
Int. Cl. B25F 5/00 (2006.01); B24B 47/12 (2006.01); B25F 5/02 (2006.01)
CPC B25F 5/026 (2013.01) [B24B 47/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electric power tool comprising:
a motor;
a power transmission mechanism connected to the motor;
a housing that houses the motor and the power transmission mechanism;
an end tool holder to which an end tool is configured to be attached and from which the end tool is configured to be detached, and connected to the power transmission mechanism;
a handle attached to the housing;
an intermediate member configured to move between a first position and a second position;
a control unit configured to control an operation of the motor; and
a detection sensor connected to the control unit and configured to detect a movement of the intermediate member,
wherein the intermediate member is in the first position when the user is not gripping the handle, and moves from the first position to the second position in response to a manipulation performed by the user while the user is gripping the handle,
the detection sensor is disposed inside the housing, and
the control unit is configured to prohibit the rotation of the motor when the detection sensor does not detect that the intermediate member has moved from the first position to the second position, and allow the rotation of the motor when the detection sensor detects that the intermediate member has moved from the first position to the second position.