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：US20170288518A1

公开(公告)日：2017-10-05

申请号：US15474625

申请日：2017-03-30

Applicant: MINEBEA MITSUMI INC.

Inventor： Mutsumi MATSUURA ,  Hiroshi ABE

IPC: H02K24/00 ,  G01D5/20 ,  H02K5/22 ,  H02K1/14 ,  H02K3/18

CPC classification number: H02K24/00 ,  G01D5/20 ,  H02K1/146 ,  H02K3/18 ,  H02K5/225

Abstract: A stator structure includes a stator section, coil cover, terminal block section, plurality of terminals and terminal-block cover section. Stator section includes stator core including first main body section and plurality of teeth sections extending on inner circumference side of first main body section and coils configured by winding wires wound around teeth sections via an insulator. Coil cover covers coils from axial direction of stator core. Terminal block section extends from insulator outward in radial direction of stator core. Plurality of terminals are provided in terminal block section, ends of winding wires configuring coils are bound to terminals. Terminal-block cover section is provided in coil cover, terminal-block cover section covers terminal block section. Terminal-block cover section includes a plurality of isolating members provided on interior, respective plurality of terminals are housed to be separated from one another in respective plurality of spaces formed by plurality of isolating members.

公开(公告)号：US20180323691A1

公开(公告)日：2018-11-08

申请号：US15967762

申请日：2018-05-01

Applicant: MINEBEA MITSUMI Inc.

Inventor： Ryo NAKANO ,  Mutsumi MATSUURA ,  Hiroshi ABE

IPC: H02K24/00 ,  H02K1/14 ,  H02K3/18 ,  H02K3/32 ,  H02K11/22 ,  H02K11/21

CPC classification number: H02K24/00 ,  H02K1/146 ,  H02K1/185 ,  H02K3/18 ,  H02K3/325 ,  H02K3/38 ,  H02K3/522 ,  H02K11/022 ,  H02K11/21 ,  H02K11/225

Abstract: A stator structure includes a stator core, insulators, a coil, and shield plates. The stator core includes a plurality of teeth extending from a body part of the stator core in a radial direction thereof. The body part is formed in an annular shape. The insulators cover the teeth from both sides in an axial direction of the stator core. The coil is wound around each of the teeth with the insulators interposed therebetween. The coil covers cover the coil from both sides in the axial direction. Each of the coil covers is formed in an annular shape. The shield plates are attached to the stator core from both sides in the axial direction of the stator core with the respective coil covers interposed therebetween.

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.

公开(公告)号：US20180097421A1

公开(公告)日：2018-04-05

申请号：US15716989

申请日：2017-09-27

Applicant: MINEBEA MITSUMI Inc.

Inventor： Hiroshi ABE ,  Naohiro YAMADA ,  Mutsumi MATSUURA

IPC: H02K5/08 ,  H02K3/32 ,  H02K1/16 ,  H02K3/48

CPC classification number: H02K5/08 ,  H02K1/16 ,  H02K3/32 ,  H02K3/34 ,  H02K3/48 ,  H02K5/225 ,  H02K2203/09

Abstract: A stator structure according to an embodiment includes a stator core having a plurality of teeth; insulators configured to cover the teeth; a coil wound around each of the teeth with the insulators interposed therebetween; and first and second coil covers configured to cover the coil, each of the first and second coil covers being formed in an annular shape. The insulators have respective flange parts configured to cover respective distal end portions of the teeth. Each of the first and second coil covers has a first peripheral wall. The first peripheral wall of the first coil cover and the flange part located on one side of the insulator are arranged to face each other with a space therebetween. The first peripheral wall of the second coil cover and the flange part located on the other side of the insulator are arranged to face each other with a space therebetween.

公开(公告)号：US20170284833A1

公开(公告)日：2017-10-05

申请号：US15475560

申请日：2017-03-31

Applicant: MINEBEA MITSUMI INC.

Inventor： Hiroshi ABE ,  Naohiro YAMADA ,  Mutsumi MATSUURA

IPC: G01D5/20 ,  H02K3/32 ,  H02K3/18 ,  H02K5/22 ,  H02K24/00 ,  H02K1/14

Abstract: A stator structure includes a stator core including a plurality of tooth sections, coils wound around the respective plurality of tooth sections via an insulator, and a first coil cover and a second coil cover that cover the coils from both sides in an axial direction of the stator core. The first coil cover and the second coil cover being coupled via the insulator.