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公开(公告)号：US11942740B2
公开(公告)日：2024-03-26
申请号：US17339469
申请日：2021-06-04
Applicant: MINEBEA MITSUMI INC.
Inventor： Mikio Umehara , Atsushi Omura , Kazuaki Sato
Abstract: A motor includes a frame having an outer diameter of 10 millimeters or less and an inner surface. The motor also includes an annular magnet attached to the inner surface of the frame, a bracket provided at the frame, and a columnar brush formed of carbon and having an outer peripheral surface. In addition, the motor includes a commutator contacting the outer peripheral surface of the brush, and an elastic member supporting the brush at the bracket. A part of the elastic member is disposed inside of the columnar brush.
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公开(公告)号：US20180166934A1
公开(公告)日：2018-06-14
申请号：US15577345
申请日：2016-04-19
Applicant: TAMAS CO., LTD.
Inventor： Sung Moon KANG
CPC classification number: H02K1/24 , H02K1/2753 , H02K3/12 , H02K3/28 , H02K3/52 , H02K5/145 , H02K5/225 , H02K13/10 , H02K15/067
Abstract: The present invention relates to a direct current motor for a vehicle, the motor having a novel electromagnetic structure and exhibiting excellent driving efficiency. The direct current motor comprises: a cover assembly; a yoke assembly that has a housing coupled with the cover assembly and a plurality of excitation poles arranged within the housing; an armature assembly that includes an armature core having a plurality of pole teeth around which coils interacting with the excitation poles are wound and a commutator having, on the armature core, the same number of commutator films as the excitation poles; and a brush disposed inside the cover assembly and selectively making contact with the commutator as the armature assembly rotates, wherein the excitation poles are provided such that three N-poles and three S-poles are alternately arranged, and 13 pole teeth and 13 commutator films are radially formed with a predetermined angle therebetween.
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公开(公告)号：US20180145568A1
公开(公告)日：2018-05-24
申请号：US15817681
申请日：2017-11-20
Applicant: SEG Automotive Germany GmbH
Inventor： Oliver CAPEK
CPC classification number: H02K13/10 , H01R39/04 , H01R39/18 , H02K7/20 , H02K13/006
Abstract: A commutation apparatus for an electric machine, having brushes with a front face which lies against the peripheral surface of a collector which has a plurality of collector segments separated by gaps, is designed in such a manner that a contact edge which runs obliquely to the gaps is formed on the front face of at least one brush.
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公开(公告)号：US20180076697A1
公开(公告)日：2018-03-15
申请号：US15696744
申请日：2017-09-06
Applicant: Johnson Electric S.A.
Inventor： Rui Feng QIN , Fei LIU
Abstract: An electric power steering system and its brush motor are disclosed. The brush motor includes a stator and a rotor rotatably mounted to the stator. The rotor includes a rotary shaft, a commutator and a rotor core fixed to the rotary shaft, and a rotor winding wound around the rotor core. The commutator includes a plurality of commutator segments. The rotor core includes a plurality of teeth. The rotor winding includes a plurality of winding elements. Adjacent teeth define therebetween wire slots for receiving the winding elements. The winding elements include a plurality of first winding elements and a plurality of second winding elements. The first winding elements are connected in series through the commutator segments. The second winding elements are connected in series through the commutator segments. The first winding elements and the second winding elements are received in different wire slots. Implementation of the present invention can improve the reliability of the product.
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公开(公告)号：US20170257009A1
公开(公告)日：2017-09-07
申请号：US15447750
申请日：2017-03-02
Applicant: Johnson Electric S.A.
Inventor： Qing Bin LUO , Chi Wai LAI , Xin Peng WEI , Gui Hong TIAN , Bo HU , Xiao Lin REN , Wen Ming WU
CPC classification number: H02K11/02 , H02K5/148 , H02K5/225 , H02K11/026 , H02K11/215 , H02K11/25 , H02K13/10
Abstract: A brush assembly includes a circuit board, at least two brushes, power connecting terminals for connecting with an external power supply, and a power supply branch circuit connected in series between a corresponding one of the power connecting terminals and a corresponding one of the brushes. The brush assembly further comprises an EMI suppressor connected between the power supply branch circuit and ground. The EMI suppressor is an axial capacitor formed by a conductor core, a cover, and a filling medium. The cover is attached around the conductor core, and the filling medium is filled between the conductor core and the cover. A motor utilizing the brush assembly is also provided.
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Patent Agency Ranking
公开(公告)号：US20170104395A1
公开(公告)日：2017-04-13
申请号：US15128491
申请日：2015-05-13
Applicant: MITSUBA Corporation
Inventor： Natsumi TAMURA , Tomoo IIJIMA , Teppei TOKIZAKI , Satoshi TAMURA
CPC classification number: H02K13/10 , B60S1/08 , B60S1/166 , H02K5/145 , H02K5/148 , H02K5/225 , H02K7/1166 , H02K11/026 , H02K11/38 , H02K13/006
Abstract: An electric motor includes: brushes (31) that are brought into sliding contact with a commutator of an armature that is fixed to a rotation shaft and feeds electric power; a brush holder stay (33) that supports the brushes (31) via brush holders (41); noise prevention elements (110) that are electrically connected to the brushes (31); and terminals (130) and jump wires (141) that electrically connect between the brush holders (41) and the noise prevention elements (110), wherein first connection portions, which connect between the noise prevention elements (110) and the terminals (130), and second connection portions, which connect between the terminals (130) and the jump wires (141), are both disposed only on a first surface (S1) of the brush holder stay (33).
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公开(公告)号：US20170104394A1
公开(公告)日：2017-04-13
申请号：US15383177
申请日：2016-12-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： MASUMI NOGUCHI
CPC classification number: H02K13/006 , H02K5/145 , H02K13/04 , H02K13/10 , H02K15/00
Abstract: A rotary device having a brush that includes a slide-contact portion, a fixing section, and a conductive bonding material. The conductive bonding material bonds together the slide-contact portion and the fixing section. The conductive bonding material is composed of an intermetallic compound phase that is an alloy containing one of (1) at least two selected from a first group consisting of Sn, Cu and Ni, and (2) at least two selected from a second group consisting of Su, Cu, and Mn.
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公开(公告)号：US09601967B2
公开(公告)日：2017-03-21
申请号：US14325602
申请日：2014-07-08
Applicant: The Scott Fetzer Company
Inventor： Daniel K. Amonett
CPC classification number: H02K5/145 , H01R39/04 , H01R39/381 , H01R39/40 , H02K5/148 , H02K5/225 , H02K13/00 , H02K13/006 , H02K13/10 , H02K23/08 , Y10T29/49011
Abstract: A motor assembly includes: a motor housing including: at least one brush receptacle having top and bottom ends; a locking element extending from the top end toward the bottom end; and a housing spring member; at least one brush holder apparatus including: a brush holder housing sized to be received within the brush receptacle, including: an upper surface and a lower surface; a receiving aperture; and an open end; a brush spring enclosed by the brush holder housing; and a brush located inside the brush holder housing; wherein the brush holder apparatus is inserted inside the brush receptacle; and wherein the housing spring member urges the brush holder apparatus toward the top end such that the locking element is received inside the receiving aperture.
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公开(公告)号：US09570963B2
公开(公告)日：2017-02-14
申请号：US13692616
申请日：2012-12-03
Applicant: Maxon Motor AG
Inventor： Arnold Teimel , Reto Walker , Dirk Uhlich
Abstract: The present invention relates to a brush cover for a brush-commutated electric motor. The brush cover comprises at least one lever brush which is mounted rotatably about an axis at the brush cover by means of a bolt. According to the invention, the bolt is surrounded, at least in sections, by at least one damping sleeve of an elastomer.
Abstract translation: 本发明涉及一种刷换电动机的刷盖。 刷盖包括至少一个杠杆刷，其通过螺栓绕轴线可旋转地安装在刷盖处。 根据本发明，螺栓至少部分地由弹性体的至少一个阻尼套筒包围。
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公开(公告)号：US09470181B2
公开(公告)日：2016-10-18
申请号：US14054994
申请日：2013-10-16
Applicant: DELPHI TECHNOLOGIES, INC.
Inventor： John G. Fischer , Mitchal A. Peterson
CPC classification number: F02M21/0245 , F02M21/0296 , F02M37/08 , F04D13/0693 , H01R39/36 , H02K5/12 , H02K5/148 , H02K7/14 , H02K13/10 , Y10T29/49236
Abstract: A fluid pump includes a hollow housing, an electric motor having an armature with a commutator, a pump section rotationally coupled to the electric motor for receiving fuel at a relatively low pressure through a fuel inlet and pressurizing the fuel to a relatively high pressure, a motor brush is in electrical contact with the commutator and including a shunt wire extending therefrom, and an end cap that closes one end of the housing and defines a high pressure chamber with the housing. The end cap includes a hollow brush tower extending therefrom and defining a brush holder slidably receiving the motor brush therein such that the brush holder defines in part the high pressure chamber. The end cap also includes an aperture with the shunt wire extending therethrough such that the shunt wire is sealed with the aperture to prevent the fuel from passing therethrough.
Abstract translation: 流体泵包括中空壳体，具有换向器的电枢的电动机，与电动机旋转耦合的泵部分，用于通过燃料入口在相对低的压力下接收燃料并将燃料加压到相对较高的压力， 马达刷与换向器电接触并且包括从其延伸的分流线以及封闭壳体的一端并且与壳体限定高压室的端盖。 端盖包括从其延伸的中空刷塔，并且限定了可将电机刷可滑动地容纳在其中的电刷架，使得电刷架部分地限定高压室。 端盖还包括孔，其中分流线延伸穿过其中，使得分流线用孔密封以防止燃料通过。
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