公开(公告)号：US20240189970A1

公开(公告)日：2024-06-13

申请号：US18528934

申请日：2023-12-05

Applicant: MAKITA CORPORATION

Inventor： Tokuo HIRABAYASHI ,  Kihiro KUSUMOTO ,  Tomoya HATTORI

IPC: B25B21/02 ,  B25B23/00

CPC classification number: B25B21/02 ,  B25B23/0035 ,  B25F5/001

Abstract: An impact wrench includes a motor including a rotor rotatable about a rotation axis extending in a front-rear direction, a spindle rotatable with a rotational force from the rotor, an anvil frontward from at least a part of the spindle and including an anvil shaft and an anvil projection, and a hammer including a hammer projection that strikes the anvil projection in a rotation direction. The anvil shaft includes a first shaft having a circular cross section, a second shaft having a rectangular cross section, and an intermediate portion between the first and second shafts. The second shaft includes four flat portions and four flat portion connectors. Each flat portion has a first edge and a second edge. The intermediate portion includes support portions each connected to the first edge and is connected to the second edge of each flat portion at positions rearward from the support portions.

公开(公告)号：US20240075609A1

公开(公告)日：2024-03-07

申请号：US18235112

申请日：2023-08-17

Applicant: MAKITA CORPORATION

Inventor： Ding ZHAO ,  Yuta SUZUKI ,  Tomoya HATTORI

IPC: B25F5/02

CPC classification number: B25F5/02

Abstract: A power tool is less likely to have lower workability. A power tool includes a motor including a rotor rotatable about a rotation axis extending in a front-rear direction and a stator, an output unit located frontward from the motor and rotatable in response to a rotational force from the rotor, a motor compartment accommodating the motor, a grip extending downward from the motor compartment, a rear rotor bearing supporting a rear portion of the rotor, and a rear cover covering an opening at a rear end of the motor compartment and holding the rear rotor bearing. The motor compartment includes a guide that guides the rear cover in a first circumferential direction and frontward, a front-rear restrictor that restricts front-rear movement of the rear cover, and a circumferential restrictor that restricts circumferential movement of the rear cover.

公开(公告)号：US20250073885A1

公开(公告)日：2025-03-06

申请号：US18787219

申请日：2024-07-29

Applicant: MAKITA CORPORATION

Inventor： Miyuki ASAHI ,  Yasuhito KAWAI ,  Tomoya HATTORI ,  Yuta SUZUKI ,  Haruki TEJIMA ,  Tokuo HIRABAYASHI ,  Tomoyuki KONDO

IPC: B25F5/02 ,  B25B21/02 ,  B25B23/18 ,  B25F5/00 ,  H02K5/04 ,  H02K7/102 ,  H02K11/30

Abstract: A power tool includes a motor, an output part, a housing, a control circuit board, and a panel. The motor includes a rotor rotatable about a motor rotation axis extending in a front-rear direction. The output part is disposed forward of the motor and is rotated by a rotational force of the rotor. The housing includes: a motor housing part that houses the motor; a grip part that extends downward from the motor housing part; and a battery holding part that is connected to a lower end of the grip part. The control circuit board is housed in the grip part and is configured to control the motor. The panel is disposed at a rear portion of the battery holding part and is manipulated to change a control method of the motor.

公开(公告)号：US20240157521A1

公开(公告)日：2024-05-16

申请号：US18378210

申请日：2023-10-10

Applicant: MAKITA CORPORATION

Inventor： Tomoya HATTORI

IPC: B25B21/02

CPC classification number: B25B21/02 ,  B25F5/001

Abstract: A leak of a lubricant oil contained in a hammer case is reduced. An impact tool includes a motor including a rotor, a striker rotatable by the rotor, an anvil strikable by the striker, a hammer case having an opening, an anvil bearing fixed to the hammer case inside the hammer case and supporting the anvil, a seal between the anvil bearing and the anvil inside the hammer case, and a support facing the opening and supporting the seal from a front. The support has a smaller inner diameter than the opening.