公开(公告)号：US20250092938A1

公开(公告)日：2025-03-20

申请号：US18656526

申请日：2024-05-06

Applicant: MITSUBA Corporation

Inventor： MASATOSHI SUZUKI ,  TETSUYA WATANABE

IPC: F16H1/32 ,  F16H57/02 ,  F16H57/021 ,  H02K7/116

Abstract: A speed reducer includes a casing, a crankshaft, and a speed reducer main body. The crankshaft has a rotation support part rotatably supported by the casing and an eccentric part eccentric with respect to the rotation support part. The speed reducer main body has an engagement part engaged with an outer circumferential surface of the eccentric part, decelerates rocking rotation of the eccentric part received by the engagement part, and outputs the decelerated rotation to outside. The crankshaft is provided with a flange part protruding to an outward side in a radial direction from an end part of the rotation support part on the eccentric part side and abutting an end surface of the engagement part in an axial direction. The flange part is formed such that a center thereof coincides with a center of the eccentric part in a direction orthogonal to the axial direction.

公开(公告)号：US12249897B2

公开(公告)日：2025-03-11

申请号：US18089528

申请日：2022-12-27

Applicant: MITSUBA Corporation

Inventor： Satoshi Nagamoto ,  Keiichi Hosoi

IPC: H02K9/06 ,  H02K3/46 ,  H02K5/04 ,  H02K11/33

Abstract: The motor includes a shaft fixed to a front surface side of a motor bracket; a rotor rotatably supported on the shaft; a stator wound with coils for generating a magnetic field to rotate the rotor; a substrate, a front surface of which mounted with a driver circuit for controlling magnetic field generation by the coils; a conductive driver case forming an accommodation space accommodating the substrate between itself and the motor bracket; a terminal disposed on a front surface side of the substrate facing the motor bracket and connecting the driver circuit and the coils; a conductive fixing member penetrating the substrate from a rear surface side and fixing the terminal in contact with the substrate; and an insulating driver insulator disposed on a rear surface side of the substrate to surround the fixing member, and protruding to a position closer to the driver case than the fixing member.

公开(公告)号：US12224638B2

公开(公告)日：2025-02-11

申请号：US17994396

申请日：2022-11-28

Applicant: MITSUBA Corporation

Inventor： Ryo Ohori ,  Minori Shoda ,  Yuzu Isomura

IPC: H02K3/34 ,  H02K1/16

Abstract: An insulator, a stator, and an electric motor capable of improving molding accuracy and assemblability are provided. An insulator 26 includes a first insulator 61 and a second insulator 62 to be attached from both axial sides of a stator core. The first insulator 61 has a first core end surface covering portion 65 and a first skirt portion 79. The second insulator 62 has a second core end surface covering portion 265 and a second skirt portion 279. The insulator 26 includes a coil lead-out portion 77 provided integrally with only the first core end surface covering portion 65 for leading out terminal portions of coils from the first insulator 61 to the outside. A length of the longest portion of the second skirt portion 279 in the axial direction is greater than a length of the longest portion of the first skirt portion 79 in the axial direction.

公开(公告)号：US20250035192A1

公开(公告)日：2025-01-30

申请号：US18605860

申请日：2024-03-15

Applicant: MITSUBA Corporation

Inventor： MOTOAKI KOBAYASHI ,  TEPPEI TOKIZAKI ,  TOHRU YUMOTO ,  NOBUYUKI NAGAI

IPC: F16H1/34 ,  F16H57/08

Abstract: A fifth ball bearing that rotatably supports a rotating shaft is provided on one side of a pinion gear in an axial direction of the rotating shaft. A sixth ball bearing that rotatably supports the rotating shaft is provided on the other side of the pinion gear in the axial direction of the rotating shaft. A carrier is provided with a bearing fixing portion that supports the fifth ball bearing immovably in the axial direction of the rotating shaft, and a bearing guide portion that supports the sixth ball bearing movably in the axial direction of the rotating shaft. The fifth and sixth ball bearings are provided so as not to be close to each other in the axial direction of the rotating shaft, and a female screw portion has a rattling adjustment member that presses the sixth ball bearing toward the side where the fifth ball bearing is provided.

公开(公告)号：US12176790B2

公开(公告)日：2024-12-24

申请号：US18334359

申请日：2023-06-13

Applicant: MITSUBA Corporation

Inventor： Teppei Tokizaki ,  Motoaki Kobayashi ,  Satoshi Tamura ,  Masaki Hayata ,  Masakazu Saito ,  Yoshichika Kawashima

IPC: H02K7/116 ,  F16H1/08 ,  B60S1/08 ,  B60S1/26 ,  F16H57/02

Abstract: A brushless motor includes a motor part and a gear part. The motor part includes: a rotating shaft, having a first gear; a rotor, having a bottom wall and a side wall, the bottom wall being fixed to the rotating shaft; magnets, fixed to the side wall and arranged side by side in a circumferential direction of the rotor; a stator, provided between the rotating shaft and the magnets in a radial direction of the rotor and wound with a coil; and a motor housing, rotatably supporting the rotating shaft, and accommodating the rotor and the stator. The gear part includes: a second gear, meshed with the first gear; an output shaft, having an output part, having a base end side thereof fixed to the second gear, and parallel to the rotating shaft; and a gear housing, rotatably supporting the output shaft, and accommodating the second gear.

公开(公告)号：US12176780B2

公开(公告)日：2024-12-24

申请号：US17784111

申请日：2021-07-27

Applicant: MITSUBA Corporation

Inventor： Keisuke Toriyama ,  Ryo Ohori

IPC: H02K3/52

Abstract: In a brushless motor including a stator core and a rotor which rotates with respect to the stator core, a coil support wall supports a coil wound around a core main body part from a radially inner side of the core main body part. A first wall part and a second wall part constituting the coil support wall are connected to each other at an angle at a portion of a tooth tip part protruding from a tooth main body part along a circumferential direction of the core main body part, and a thickness dimension of the second wall part is equal to or larger than a thickness dimension of the first wall part along a radial direction of the core main body part.

公开(公告)号：US12119710B2

公开(公告)日：2024-10-15

申请号：US17790497

申请日：2021-09-01

Applicant: MITSUBA Corporation

Inventor： Ryo Ohori ,  Takeshi Kanai

IPC: H02K1/18 ,  H02K7/116 ,  H02K21/16

CPC classification number: H02K1/185 ,  H02K7/116 ,  H02K21/16

Abstract: The motor comprises: a stator around which coils are wound and which forms a rotating magnetic field rotating a rotor; and a first motor case housing the stator. The stator has: a core body portion forming an annular magnetic path; and a fastening portion projecting outside in the radial direction from the outer circumferential surface of the core body portion. The fastening portion has an attachment hole which is formed in a penetrating manner along the rotating axis line direction of the rotor and into which a fastening screw for fixing the stator to the first motor case is inserted. The first motor case has: first to third core receiving portions receiving an end portion of the core body portion in the rotating axis line direction; and first and second fastener receiving portions receiving an end portion of the fastening portion in the rotating axis line direction.

公开(公告)号：US20240305231A1

公开(公告)日：2024-09-12

申请号：US18540836

申请日：2023-12-14

Applicant: MITSUBA Corporation

Inventor： MIYA YAMADA ,  KOTA FUKASHIRO

IPC: H02P23/28 ,  H02K11/33 ,  H02K11/35 ,  H02P27/06

CPC classification number: H02P23/28 ,  H02K11/33 ,  H02K11/35 ,  H02P27/06

Abstract: A motor control device includes an MCU and a predriver configuring at least a part of a circuit for controlling driving of a motor. The MCU includes a communication timing judgment portion, outputting a communication verification command when a diagnostic signal including information indicating whether the mechanism or equipment to be controlled by a combination of the MCU and the predriver is in a fail state is input from the predriver to the MCU; a signal content judgment portion, judging whether a content of the diagnostic signal is in the fail state when the communication verification command is input and outputting a communication execution command when the content of the diagnostic signal indicates the fail state; and a communication portion, executing a communication between the MCU and the predriver for reading fail information of the predriver when the communication execution command is input.

公开(公告)号：US12083722B2

公开(公告)日：2024-09-10

申请号：US17420715

申请日：2019-12-24

Applicant: MITSUBA Corporation

Inventor： Takao Umezawa ,  Hitoshi Konuma ,  Mitsunori Sato

IPC: B29C45/16 ,  B29C45/00 ,  B29C45/04 ,  B29C45/06 ,  B29C45/14 ,  C23C14/34 ,  C23C14/50 ,  B29L9/00 ,  B29L31/34

CPC classification number: B29C45/162 ,  B29C45/0053 ,  B29C45/0416 ,  B29C45/062 ,  B29C45/14778 ,  B29C45/1618 ,  B29C45/1635 ,  B29C45/1671 ,  C23C14/34 ,  C23C14/505 ,  B29C2045/0079 ,  B29C2045/1673 ,  B29K2995/0003 ,  B29L2009/008 ,  B29L2031/3456

Abstract: The present invention achieves cost reduction by simplifying the manufacturing process for a film-formed molded product provided with a metal coating film capable of transmitting electromagnetic waves therethrough. This method for manufacturing a film-formed molded product which includes a molded product and a metal coating film covering the molded product comprises: forming the molded product between a movable mold and a fixed mold; and then forming the metal coating film which covers the molded product by a film-forming part of a second mold without taking the molded product out from between the movable mold and the fixed mold. The metal coating film is capable of transmitting electromagnetic waves therethrough as a result of generation of cracks after being formed.

公开(公告)号：US12081150B2

公开(公告)日：2024-09-03

申请号：US17976885

申请日：2022-10-31

Applicant: MITSUBA Corporation

Inventor： Ryo Ohori ,  Takeshi Kanai

IPC: H02P23/18 ,  B60S1/08 ,  H02P101/45

CPC classification number: H02P23/18 ,  B60S1/08 ,  H02P2101/45 ,  H02P2203/03

Abstract: An advance angle correction method of a motor device includes: acquiring first advance angle correction information indicating a correspondence relationship between an advance angle correction amount and a rotation speed difference of a rotor of the motor calculated in advance based on a rotation speed change rate; measuring the rotation speed difference of the rotor; calculating a first advance angle correction amount for each rotation direction of the rotor as a first forward rotation advance angle correction amount and a first reverse rotation advance angle correction amount so that a rotation speed difference of an output shaft becomes smaller based on the first advance angle correction information and the rotation speed difference of the rotor; and storing the calculated first forward rotation advance angle correction amount and the first reverse rotation advance angle correction amount as advance angle correction information for each motor device.