公开(公告)号：US20170222519A1

公开(公告)日：2017-08-03

申请号：US15415354

申请日：2017-01-25

Applicant: DENSO CORPORATION

Inventor： Yosuke SEKIYAMA

IPC: H02K9/06 ,  H02K11/04 ,  H02K5/20 ,  B60L1/00 ,  H02K5/18

CPC classification number: H02K9/06 ,  B60K11/06 ,  B60K25/02 ,  B60K2001/006 ,  B60K2025/022 ,  B60L1/00 ,  B60L2220/50 ,  B60Y2400/604 ,  H02K5/18 ,  H02K5/20 ,  H02K11/046 ,  Y02T10/641

Abstract: An AC generator for a vehicle includes a housing having an inlet and an outlet, a stator fixed to the housing, a rotor disposed inside of the stator, a cooling fan fixed to a rotor, one or more cooling fins disposed in an air flow passage of a cooling air, and a rectifying element for rectifying an AC voltage generated by a stator winding. A positive-side cooling fin has a plurality of tapered first and second cooling holes penetrating in a thickness direction and serves as the air flow passages of the cooling air. Tapering directions of tapered surfaces extending in the thickness direction of each cooling hole in at least one pair of adjacent first and second cooling holes are reversed in the thickness direction with respect to each other.

公开(公告)号：US20170279337A1

公开(公告)日：2017-09-28

申请号：US15462404

申请日：2017-03-17

Applicant: DENSO CORPORATION

Inventor： Masatoshi KOMURA ,  Tomoyuki SHIMA ,  Yosuke SEKIYAMA ,  Takuya KUDO

IPC: H02K9/02 ,  H02K5/18

CPC classification number: H02K9/02 ,  H02K5/18 ,  H02K5/20 ,  H02K9/06

Abstract: An electrical rotating machine includes a housing which has a bearing mounted on a wall thereof. The housing also has a plurality of air inlets, a plurality of air outlets, and spokes. The spokes extend from the bearing in a radial direction of the housing to isolate the air inlets from each other in a circumferential direction of the housing. Each of the spokes is equipped with a heat sink exposed to a flow of cooling air entering the housing through the air inlet to dissipate heat, as transmitted to the spoke, thereby minimizing transfer of the heat to the bearing through the spokes.

公开(公告)号：US20140175939A1

公开(公告)日：2014-06-26

申请号：US14099182

申请日：2013-12-06

Applicant: DENSO CORPORATION

Inventor： Yosuke SEKIYAMA ,  Nobuhiro ASANO

IPC: H02K1/24

CPC classification number: H02K1/243

Abstract: A rotor includes a rotating shaft and a pair of first and second pole cores fixed on the rotating shaft. Each of the first and second pole cores includes a plurality of magnetic pole claws each having a root portion and a distal end. Each of the magnetic pole claws are configured to have a constant circumferential width at the root portion and taper from the root portion to the distal end. The magnetic pole claws of the first pole core are arranged alternately with those of the second pole core in a circumferential direction of the rotating shaft. Further, at least part of the magnetic pole claws of the first and second pole cores each have at least one chamfered portion formed at a circumferential end of the root portion of the magnetic pole claw so as to extend parallel to an axial direction of the rotating shaft.

Abstract translation: 转子包括旋转轴和固定在旋转轴上的一对第一和第二极芯。 第一和第二极芯中的每一个包括多个磁极爪，每个磁极爪具有根部部分和远端部分。 每个磁极爪构造成在根部处具有恒定的周向宽度，并且从根部到远端是锥形的。 第一极芯的磁极爪与旋转轴的圆周方向上的第二磁极铁芯的磁极爪交替配置。 此外，第一和第二极芯的至少一部分磁极爪各自具有形成在磁极爪的根部的圆周端部的至少一个倒角部分，以便平行于旋转的轴向方向延伸 轴。