公开(公告)号：US20150171712A1

公开(公告)日：2015-06-18

申请号：US14548441

申请日：2014-11-20

Applicant: Nidec Corporation

Inventor： Ba YONGZUO ,  Luan BAOJUN ,  Wang XIN ,  Kazunori TATEGATA

IPC: H02K11/00

CPC classification number: H02K11/0094 ,  H02K3/522 ,  H02K5/225 ,  H02K11/30 ,  H02K2203/09 ,  H02K2213/03

Abstract: A motor includes a stator around which an armature coil is wound, a bus bar unit including a coil-connection bus bar electrically connected to the armature coil and an electronic-component-connection bus bar to which a plurality of electronic components is welded, and a bus bar holding member arranged to hold the bus bar unit. The electronic-component-connection bus bar includes an electronic component welding portion including a plurality of welding points at which the electronic components are welded to a leading end of the electronic component welding portion, a base portion held by the bus bar holding member, and a connection portion configured to interconnect the electronic component welding portion and the base portion. A distance between the welding points adjoining each other is larger than a width of a thinnest section of the connection portion.

Abstract translation: 电动机包括：电枢线圈绕其上的定子;汇流条单元，包括电连接到电枢线圈的线圈连接母线和焊接有多个电子部件的电子部件连接母线;以及 汇流条保持构件布置成保持母线单元。 电子部件连接汇流条包括电子部件焊接部，该电子部件焊接部包括多个焊接点，电子部件焊接到电子部件焊接部的前端，由母线保持部保持的基部， 连接部，其构造成将电子部件焊接部和基部相互连接。 彼此相邻的焊接点之间的距离大于连接部分的最薄部分的宽度。

公开(公告)号：US20220376588A1

公开(公告)日：2022-11-24

申请号：US17770988

申请日：2020-09-17

Applicant: NIDEC CORPORATION

Inventor： Keigo NAKAMURA ,  Hibiki TAKADA ,  Kazunori TATEGATA

IPC: H02K11/33 ,  H02K5/20 ,  H02K7/116 ,  H02K9/19 ,  H02P27/06

Abstract: A drive device includes a motor having a motor shaft that rotates, a motor housing unit that houses the motor, a gear unit that transmits rotation of the motor shaft to an intermediate shaft, and an inverter housing unit that houses the inverter, wherein the inverter housing unit is disposed above the intermediate shaft, a lower wall portion of the inverter housing unit faces outside air, and the inverter housing unit has a vent that allows an inside of the inverter housing unit and an outside below the inverter housing unit to communication with each other.

公开(公告)号：US20210013754A1

公开(公告)日：2021-01-14

申请号：US16978115

申请日：2019-02-28

Applicant: Nidec Corporation

Inventor： Jürgen SCHMID ,  Thomas KÜBLER ,  Kazunori TATEGATA

IPC: H02K1/28 ,  H02K1/27

Abstract: The invention relates to a rotor unit for a brushless electric motor with an annular rotor core surrounding a central axis, a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction, a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder, wherein the holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion, wherein the shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements, wherein the head portion lies on the peripheral faces in a contact area, which contact area is separated by a distance from a transition between the shank portion and the head portion.

公开(公告)号：US20210021165A1

公开(公告)日：2021-01-21

申请号：US16978109

申请日：2019-02-28

Applicant: Nidec Corporation

Inventor： Jürgen SCHMID ,  Thomas KÜBLER ,  Kazunori TATEGATA

IPC: H02K1/28 ,  H02K1/27

Abstract: The invention relates to a rotor unit for a brushless electric motor with an annular rotor core surrounding a central axis, a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction, a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder, wherein the holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion, wherein the shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements, wherein the contact region of the shaft portion in the radial direction of the side faces has an extension of 30% to 70% of the radial extension of the side surfaces.

公开(公告)号：US20200266680A1

公开(公告)日：2020-08-20

申请号：US16773984

申请日：2020-01-28

Applicant: NIDEC CORPORATION

Inventor： Shohei FUJIMOTO ,  Kazunori TATEGATA ,  Keisuke FUKUNAGA

IPC: H02K5/22 ,  F16H57/027 ,  F16H57/04 ,  H02K7/116 ,  H02K9/19 ,  H02K15/14 ,  H02M7/48

Abstract: A motor unit includes a motor including a rotor arranged to rotate about a motor axis, and a stator arranged opposite to the rotor; a housing arranged to house the motor; an inverter electrically connected to the motor; a busbar arranged to connect the motor and the inverter to each other; and a cover portion. The housing includes a motor housing portion arranged to house the motor, a top wall portion arranged to cover an upper side of the motor housing portion, and a work-use hole portion arranged to pass through the top wall portion. The cover portion is arranged to close an upper opening of the work-use hole portion. The cover portion includes a pressure regulating passage arranged to regulate the pressure in an interior of the housing.