公开(公告)号：US20180309333A1

公开(公告)日：2018-10-25

申请号：US16022283

申请日：2018-06-28

Applicant: NTN CORPORATION

Inventor： Yusuke MAKINO

IPC: H02K1/27

CPC classification number: H02K1/276 ,  B60L15/00 ,  H02K1/22 ,  H02K1/27 ,  H02K1/2706 ,  H02K21/14 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03 ,  Y02T10/641

Abstract: The rotating electric motor includes a stator including a stator coil and a stator core, and a rotor located at an inner peripheral side of the stator core and rotatable relative to the stator. The rotor includes a rotor core provided at an outer periphery of a rotor rotation shaft via a core support portion. The rotor core has a plurality of magnetic poles in which a plurality of sets of permanent magnets are provided along a circumferential direction. The rotor core includes a plurality of rotor core divided bodies that are aligned in an axial direction, concentrically arranged, and shifted in phase from each other by a determined angle. A pair of grooves are provided on an outer peripheral portion of each rotor core divided body to be spaced apart from each other in the circumferential direction with a center of each magnetic pole.

公开(公告)号：US20160233738A1

公开(公告)日：2016-08-11

申请号：US15132848

申请日：2016-04-19

Applicant: NTN CORPORATION

Inventor： Yusuke MAKINO ,  Kenichi SUZUKI

IPC: H02K7/14 ,  H02K9/19 ,  H02K1/27 ,  H02K7/116 ,  H02K11/225

CPC classification number: H02K7/14 ,  B60K7/0007 ,  B60K17/046 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60Y2306/03 ,  H02K1/27 ,  H02K1/28 ,  H02K7/006 ,  H02K7/116 ,  H02K9/19 ,  H02K11/225 ,  Y02T10/641

Abstract: An electric motor which is an in-wheel motor includes a motor housing, a motor stator, a rotation shaft, a motor rotor, and a rotational sensor. The rotation shaft has: a shaft portion rotatably supported by a plurality of bearings; a flange portion spreading toward the outer diameter side from the outer circumference of the shaft portion; and a cylindrical portion extending from the outer diameter end of the flange portion in parallel with the shaft portion, and having an outer circumference to which the motor rotor is fitted. The axial position of the rotational sensor is between the plurality of bearings, and the rotational sensor is provided on the inner diameter side of the cylindrical portion of the rotation shaft.

Abstract translation: 作为轮内电动机的电动机包括电动机壳体，电动机定子，旋转轴，电动机转子和旋转传感器。 旋转轴具有：由多个轴承可旋转地支撑的轴部; 从所述轴部的外周向外径侧扩展的凸缘部; 以及从所述凸缘部的外径端与所述轴部平行地延伸的圆筒部，并且具有安装所述电动机转子的外周。 旋转传感器的轴向位置在多个轴承之间，旋转传感器设置在旋转轴的圆筒部的内径侧。