公开(公告)号：US20250112527A1

公开(公告)日：2025-04-03

申请号：US18834226

申请日：2023-05-30

Applicant: MABUCHI MOTOR CO., LTD.

Inventor： Takuya TAKAHASHI ,  Naoya NEGORO

IPC: H02K11/215 ,  H02K5/22 ,  H02K21/22

Abstract: A brushless motor includes: a rotor configured to rotate integrally with a shaft; a stator that is placed, facing the rotor in a radial direction, and includes a core around which a winding is wound; a board that is placed, spaced away in an axial direction from one end surface of the shaft, and extends in a direction intersecting with the axial direction; a holder that is fixed to the stator and configured to hold the board; and a connecting means configured to be electrically connected to the winding.

公开(公告)号：US20190140493A1

公开(公告)日：2019-05-09

申请号：US16133712

申请日：2018-09-18

Applicant: MABUCHI MOTOR CO., LTD.

Inventor： Takuya TAKAHASHI

IPC: H02K1/14 ,  H02K1/27 ,  H02K3/18 ,  H02K3/32 ,  A45D20/12

Abstract: Provided is a stator of a single-phase motor with which an efficient magnetic circuit can be formed and a large torque can be obtained. The stator includes a pair of stator cores each having C-shape in a plan view and including distal end portions E disposed proximate to an outer peripheral surface of an axial rotor having a rotating shaft. The stator cores are disposed to opposite to each other with the rotor disposed therebetween in a first radial direction X orthogonal to an axial direction along a central axis line O of the rotating shaft. The stator cores include a pair of arm portions each extending in a radial direction intersecting the first radial direction X, and a base portion. The base portion connects ends of the arm portions on the opposite side from the distal end portions E, and extends in a circumferential direction encircling the central axis line O.

公开(公告)号：US20240405631A1

公开(公告)日：2024-12-05

申请号：US18704921

申请日：2023-05-30

Applicant: MABUCHI MOTOR CO., LTD.

Inventor： Takuya TAKAHASHI

IPC: H02K5/167 ,  F16C17/02 ,  H02K1/14 ,  H02K7/08 ,  H02K21/22

Abstract: An outer rotor brushless motor includes: a shaft; a rotor; a stator; a tubular bushing at one side of the stator; an impregnated bearing at the other side of the bushing; and a washer rotatable integrally with the shaft. The bushing has: a fixed portion fixed to a core inner peripheral surface, the fixed portion having a first end surface facing a bearing end surface, and a first inner peripheral surface facing an outer peripheral surface with first clearance in between; and a housing having a second inner peripheral surface with a greater diameter than the first inner peripheral surface, on the one side of the fixed portion. An oil repellent finish is applied to a surface of the bushing. The washer is placed radially inward of the second inner peripheral surface. Second clearance greater than the first clearance is between the bearing end surface and the first end surface.

公开(公告)号：US20220069666A1

公开(公告)日：2022-03-03

申请号：US17458542

申请日：2021-08-27

Applicant: MABUCHI MOTOR CO., LTD.

Inventor： Kenji SHIRAKI ,  Katsuhito NISHIZAWA ,  Shou KUBOTA ,  Takuya TAKAHASHI

IPC: H02K5/22 ,  H02K3/52 ,  H02K29/08

Abstract: To provide a brushless motor with a simple configuration, which has accomplished size reduction.
An inner rotor brushless motor having a rotor in a center of a cylindrical stator includes: three bus bars on one end side of the stator in an axial direction thereof, the bus bars connecting three phase coils provided to the stator on a phase-by-phase basis; a bottomed tubular connector portion adjacent to a housing that houses the stator and the rotor; a plurality of connector terminals fixed, penetrating a bottom portion of the connector portion, the plurality of connector terminals being exposed to an internal space of the connector portion; and a board stretching from the one end side of the stator in the axial direction to the bottom portion side of the connector portion, the board being configured to electrically connect an end of each of the bus bars and the penetrating connector terminal.