公开(公告)号：US20210031342A1

公开(公告)日：2021-02-04

申请号：US16915068

申请日：2020-06-29

Applicant: MAKITA CORPORATION

Inventor： Koji TAKAHAGI

IPC: B25B23/145 ,  B25B21/02 ,  B25B21/00

Abstract: Torque produced in an oil unit is leveled irrespective of the temperature variation to maintain intended operation efficiency. An impact driver includes a brushless motor, and an oil unit rotatable by the brushless motor. The oil unit includes a case including a projection inside, a spindle protruding from the case, a coil spring held at the spindle in the case, and a blade held at the spindle in the case and urged outward in a radial direction of the case by the coil spring. The blade comes in contact with the projection in a rotation direction of the case.

公开(公告)号：US20230356382A1

公开(公告)日：2023-11-09

申请号：US17795398

申请日：2021-03-02

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA ,  Koji TAKAHAGI ,  Tomohiko IMAE ,  Jun UEDA ,  Yuta ARAKI ,  Hidenori NAGASAKA

IPC: B25F5/02

CPC classification number: B25F5/026

Abstract: A power tool receives a reaction force with an auxiliary handle attached to the power tool. An auxiliary handle attachable to a power tool includes a first arm, a second arm that fastens, together with the first arm, at least a part of the power tool located between the first arm and the second arm, a handle, a grip sensor that detects the handle being gripped with the first arm and the second arm fastening at least the part of the power tool in between, and a signal output unit that outputs, to the power tool, a grip signal indicating that the handle is gripped based on a detection signal from the grip sensor.

公开(公告)号：US20230043839A1

公开(公告)日：2023-02-09

申请号：US17845572

申请日：2022-06-21

Applicant: MAKITA CORPORATION

Inventor： Koji TAKAHAGI ,  Yuta ARAKI

IPC: B25F5/02 ,  H02K7/14 ,  B25F5/00 ,  B25B21/00

Abstract: A driver drill allows smooth change of the drive conditions of a motor. The driver drill includes a motor, an output unit located frontward from the motor and rotatable with a rotational force from the motor, a trigger lever operable to activate the motor, a forward-reverse switch lever operable to change a rotation direction of the motor, a first operation member operable to change a drive condition of the motor, a second operation member located upward from the first operation member and operable to change the drive condition of the motor, and a controller that sets the drive condition of the motor in response to an operation on at least one of the first operation member or the second operation member.

公开(公告)号：US20230311290A1

公开(公告)日：2023-10-05

申请号：US18178111

申请日：2023-03-03

Applicant: MAKITA CORPORATION

Inventor： Koji TAKAHAGI

IPC: B25D17/26 ,  B25D11/06

CPC classification number: B25D17/26 ,  B25D11/066

Abstract: To prevent, for example, a tube in a case from blocking an oil port, an oil unit includes a case that contains oil, a blade inside the case, an output shaft holding the blade and protruding from the case, at least one oil port formed on the case, a hollow tube adjacent to an inner surface in which the at least one oil port is open in the case, and a flow channel definer positioning the tube adjacent to an opening of the at least one oil port in the inner surface at a predetermined position and defining a flow channel of oil to flow into the case through the opening.

公开(公告)号：US20220118589A1

公开(公告)日：2022-04-21

申请号：US17466093

申请日：2021-09-03

Applicant: MAKITA CORPORATION

Inventor： Koji TAKAHAGI

IPC: B25B21/02 ,  B25F5/00 ,  H02K7/14 ,  H02K5/20 ,  H02K9/04 ,  H02K11/25 ,  H02P29/60

Abstract: An oil pulse tool cools an oil unit and a motor. A soft impact driver includes a brushless motor, an oil unit located frontward from the brushless motor and driven by the brushless motor, a spindle located frontward from the oil unit and driven by the oil unit, a cylindrical portion and a rear cover accommodating the brushless motor and having outlets, a grip located below the cylindrical portion and the rear cover, and a unit case accommodating the oil unit and located frontward from the cylindrical portion and having an inlet. The inlet is located in the unit case alone, and the outlets are located in the cylindrical portion and the rear cover alone.