公开(公告)号：US20210057974A1

公开(公告)日：2021-02-25

申请号：US16962011

申请日：2019-01-15

Applicant: MINEBEA MITSUMI Inc.

Inventor： Mutsumi MATSUURA ,  Takashi NAKAGAWA ,  Hiroshi ABE ,  Shinya SUZUKI

IPC: H02K24/00 ,  H02K1/14 ,  H02K1/16 ,  G01D5/20

Abstract: A stator structure of an embodiment includes a stator core that comprises: a ring-shaped main body; and a plurality of teeth extending in a radial direction of the main body and arranged along a circumferential direction of the main body. The main body comprises a plurality of elongated holes that are formed in an arc shape along the circumferential direction of the main body and that are arranged along the circumferential direction of the main body, and a plurality of holes that are arranged along the circumferential direction of the main body between the teeth and the elongated holes in the radial direction of the main body. At least one of the holes is disposed between beams and the teeth located close to the beams, the beams being provided between the adjacent elongated holes.

公开(公告)号：US20180269762A1

公开(公告)日：2018-09-20

申请号：US15918360

申请日：2018-03-12

Applicant: MINEBEA MITSUMI Inc.

Inventor： Hiroshi ABE ,  Takashi NAKAGAWA

IPC: H02K24/00 ,  H02K1/24 ,  H02K11/21

CPC classification number: H02K24/00 ,  G01D1/00 ,  G01D5/2046 ,  G01D5/24442 ,  H02K1/246 ,  H02K1/28 ,  H02K11/21 ,  H02K2201/03

Abstract: A rotor in one embodiment includes an annular rotor main unit and a fitting portion that extends inward or outward one of an inner circumference and an outer circumference of the rotor main unit to be connected with a rotary shaft. The fitting portion is formed at a position at which a centerline of the fitting portion is offset in parallel with respect to a normal line that is associated with a tangent line of the one of the inner circumference and the outer circumference.

公开(公告)号：US20230223829A1

公开(公告)日：2023-07-13

申请号：US18180474

申请日：2023-03-08

Applicant: MINEBEA MITSUMI Inc.

Inventor： Mutsumi MATSUURA ,  Takashi NAKAGAWA ,  Hiroshi ABE ,  Shinya SUZUKI

IPC: H02K24/00 ,  H02K11/225

CPC classification number: H02K24/00 ,  H02K11/225

Abstract: A stator structure of an embodiment includes a stator core that comprises: a ring-shaped main body; and a plurality of teeth extending in a radial direction of the main body and arranged along a circumferential direction of the main body. The main body comprises a plurality of elongated holes that are formed in an arc shape along the circumferential direction of the main body and that are arranged along the circumferential direction of the main body, and a plurality of holes that are arranged along the circumferential direction of the main body between the teeth and the elongated holes in the radial direction of the main body. At least one of the holes is disposed between beams and the teeth located close to the beams, the beams being provided between the adjacent elongated holes.