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公开(公告)号：US20210305875A1
公开(公告)日：2021-09-30
申请号：US17205074
申请日：2021-03-18
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Takayuki MIGITA , Takumi OKADA
Abstract: In manufacturing a motor, a second protrusion of a lead bushing is inserted into a second through-hole in a bearing holder. A diameter increased portion on an upper end of the second protrusion fixes the lead bushing to the bearing holder. This configuration thus requires less dimensional accuracy as compared with a case where the lead bushing is press fitted to the bearing holder.
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公开(公告)号：US20190356203A1
公开(公告)日：2019-11-21
申请号：US16470567
申请日：2018-01-12
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI
IPC: H02K11/215 , H02K7/00 , H02K21/14
Abstract: A sensor magnet assembly has a cylindrical shape extending in an axial direction and includes a fixing member fixed to a one side end of a shaft in the axial direction and a sensor magnet fixed to an outer circumferential surface of the fixing member. The fixing member includes a first groove recessed inward from the outer circumferential surface in a radial direction and has an annular shape extending in a circumferential direction and first recesses recessed inward from the outer circumferential surface in the radial direction and disposed spaced apart along the circumferential direction. The first recesses are disposed at positions different from the first groove in the axial direction. The first groove and the first recesses are disposed in a portion of the outer circumferential surface of the fixing member, to which the sensor magnet is fixed.
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公开(公告)号：US20170324313A1
公开(公告)日：2017-11-09
申请号：US15319485
申请日：2015-03-13
Applicant: Nidec Corporation
Inventor： Naohiro HASHIZUME , Shunsuke TAKAHASHI , Kuniaki TANAKA , Keisuke SAITO
CPC classification number: H02K23/26 , H02K3/28 , H02K13/006 , H02K15/00 , H02K23/04
Abstract: Provided is a motor having a rotary unit includes a shaft extending along the center axis, an armature core attached to the shaft and having six teeth radially extending toward a radial direction, a coil group of 6·n (however, n is 1 or 2) concentrated winding coils installed at the six teeth, using a coil by concentratedly winding a lead wire around one teeth as a concentrated winding coil, and a commutator electrically connected to the coil group. The stationary unit includes a pair of field magnets having same polarity facing each other, having the armature core disposed therebetween and a housing having a cylindrical yoke accommodating the pair of field magnets, wherein in the yoke, a pair of portions facing each other between the pair of magnets in a circumferential direction is a pair of magnetic poles directly facing the teeth of the armature core while having an opposite polarity to that of the magnetic poles, and a brush group contacting the commutator.
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公开(公告)号：US20200059127A1
公开(公告)日：2020-02-20
申请号：US16487510
申请日：2018-03-13
Applicant: Nidec Corporation
Inventor： Yoshiaki YAMASHITA , Shunsuke TAKAHASHI , Takao ATARASHI
IPC: H02K3/52
Abstract: A bus bar unit includes a bus bar holder, a bus bar extending in a direction perpendicular to an axial direction and fixed to the bus bar holder, and an external connection terminal connected to the bus bar and extending to one side in the axial direction from the bus bar. The external connection terminal has a plate shape. The external connection terminal includes a first plate portion extending toward one side in the axial direction and a second plate portion that is positioned on a base end side of the first plate portion, is provided with a connection portion connected to the bus bar, and faces a direction different from the first plate portion. The first plate portion and the second plate portion are connected to each other in a bending line extending in the axial direction, and the second plate portion extends from one surface side to the other surface side of the first plate portion when viewed in the axial direction.
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公开(公告)号：US20200059126A1
公开(公告)日：2020-02-20
申请号：US16487507
申请日：2018-03-20
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI
IPC: H02K3/52
Abstract: A bus bar unit includes a bus bar holder provided on one side in an axial direction of a stator disposed in an annular shape around a central axis extending in a vertical direction, a bus bar extending along a plane perpendicular to the axial direction and fixed to the bus bar holder, and an external connection terminal connected to the bus bar and extending upward from the bus bar. The bus bar includes a wire and a terminal connector located on one end thereof and connected to the external connection terminal, and a lead wire connector located on the other end thereof and connected to a lead wire extending from the stator. The lead wire connector is U-shaped or substantially U-shaped. The lead wire connector includes a first end located on the external connection terminal side and a second end located on the opposite side of the first end. The second end includes an extension extending in a direction away from an opening of the lead wire connector.
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Patent Agency Ranking
公开(公告)号：US20200059124A1
公开(公告)日：2020-02-20
申请号：US16487509
申请日：2018-03-13
Applicant: Nidec Corporation
Inventor： Yoshiaki YAMASHITA , Shunsuke TAKAHASHI , Takao ATARASHI
Abstract: A bus bar unit includes a bus bar holder, a U-phase bus bar group, a V-phase bus bar group, and a W-phase bus bar group each including a first layer bus bar located on one side of the bus bar holder in an axial direction and extending along a plane perpendicular to the axial direction, a second layer bus bar located on one side of the first layer bus bar in the axial direction and extending along the plane perpendicular to the axial direction, and an external connection terminal connected to the first layer bus bar and the second layer bus bar and extending from the first layer bus bar and the second layer bus bar toward one side in the axial direction. The first and second layer bus bars of each of the U-phase bus bar group, the V-phase bus bar group, and the W-phase bus bar group extend to opposite sides from each other in a circumferential direction from the external connection terminal connected thereto.
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公开(公告)号：US20210305870A1
公开(公告)日：2021-09-30
申请号：US17205076
申请日：2021-03-18
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Takumi OKADA
Abstract: A bus bar assembly includes conductors and a bus bar holder made of a resin, the bus bar holder holding the conductors. The conductors each include a plate-shaped portion extending perpendicularly to a central axis. The plate-shaped portions axially overlap one another. An upper plate-shaped portion corresponding to an uppermost one of the plate-shaped portions includes an upper surface at least partially exposed from the bus bar holder.
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公开(公告)号：US20200059128A1
公开(公告)日：2020-02-20
申请号：US16487512
申请日：2018-03-20
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Hiroshi TANGE , Yoshiaki YAMASHITA , Takashi SEGUCHI
Abstract: A motor includes a rotor, a stator surrounding an outer side of the rotor in a radial direction and including a coil, and a bus bar of a wire electrically connected to the coil and having conductivity, wherein the stator is provided with a hole extending in an axial direction, the bus bar includes stretched portions extending in the axial direction, and each of the stretched portions is disposed in the hole.
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公开(公告)号：US20210305884A1
公开(公告)日：2021-09-30
申请号：US17205072
申请日：2021-03-18
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Takayuki MIGITA
Abstract: A motor includes a housing and a metal shield plate. The housing includes a bearing holder. The shield plate includes a shield plate main body and a protrusion that protrudes upward from the shield plate main body. The protrusion has a tubular shape. In manufacturing the motor, the protrusion of the shield plate is inserted into a through-hole in the bearing holder. A working deformation portion is then formed such that an upper end of the protrusion is deformed to contact an upper surface of the bearing holder.
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公开(公告)号：US20210305853A1
公开(公告)日：2021-09-30
申请号：US17205080
申请日：2021-03-18
Applicant: Nidec Corporation
Inventor： Shunsuke TAKAHASHI , Takayuki MIGITA , Takumi OKADA
Abstract: A connection terminal includes a lower terminal portion, a bent portion, and an upper terminal portion. The bent portion extends radially inward from an upper end of the lower terminal portion. The upper terminal portion extends axially upward from a radially inner end of the bent portion. The upper terminal portion is located radially inside a radially inner end surface of a tooth. In a process of manufacturing a motor, a rotor main body is inserted into a radially inner side of a stator core, using a space defined radially inside the lower terminal portion.
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