公开(公告)号：US20160301270A1

公开(公告)日：2016-10-13

申请号：US15100382

申请日：2015-01-05

Applicant: NSK LTD.

Inventor： Yusuke OTA ,  Hayao WATANABE ,  Shigeru ENDOU

IPC: H02K1/27 ,  H02K21/16 ,  H02K1/14

CPC classification number: H02K1/278 ,  H02K1/08 ,  H02K1/146 ,  H02K1/276 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/03 ,  H02K2213/03

Abstract: To provide a motor core and a motor capable of reducing cogging torque and torque ripple by the shape of a pole tooth of a stator. An end surface of a pole tooth of a stator is formed such that a cross-section of the end surface along a circumferential direction is a curved surface having an arc shape that protrudes in a direction opposite to a direction in which an end surface of a magnet of a rotor (equivalent to an outer periphery of a rotor yoke part), which is opposed to the end surface, protrudes.

Abstract translation: 提供一种能够通过定子的极齿的形状减少齿槽转矩和转矩脉动的电动机芯和电动机。 定子的极齿的端面形成为使得沿着圆周方向的端面的横截面是具有弧形的弯曲表面，该弧形表面沿与方向的端面的方向相反的方向突出 与端面相对的转子的磁体（相当于转子磁轭部的外周）突出。

公开(公告)号：US20160118855A1

公开(公告)日：2016-04-28

申请号：US14892442

申请日：2014-05-07

Applicant: NSK LTD.

Inventor： Masayuki MARUYAMA ,  Yusuke OTA ,  Kazunori KOIZUMI ,  Hayao WATANABE ,  Toshinori SATOU

IPC: H02K5/10 ,  H02K11/225

CPC classification number: H02K5/10 ,  H02K11/225 ,  H02K2205/09

Abstract: Provided are a motor having a small number of parts and provided with waterproof performance in a low-cost method, and a positioning device and a conveyance device that are positioned and driven by the motor. The motor includes a columnar motor body that is formed with a center hole penetrating in an axial direction, and a housing for accommodating the motor body. The housing includes a cylindrical part that covers an outer peripheral surface of the motor body; a rotation output part provided on an upper side of the cylindrical part in the axial direction and fixed to rotary bodies of the motor body; and a fixed part provided on a lower side of the cylindrical part in the axial direction and fixed to fixed bodies of the motor body. The housing is sealed by a sealing mechanism at only one place of the cylindrical part in the axial direction.

Abstract translation: 本发明提供一种具有少量部件并以低成本方法提供防水性能的电动机，以及由电动机定位和驱动的定位装置和输送装置。 电动机包括形成有沿轴向贯通的中心孔的柱状电动机主体和容纳电动机主体的壳体。 壳体包括覆盖电动机主体的外周面的圆筒部; 旋转输出部，其设置在所述筒状部的轴向上侧上并固定于所述电动机主体的旋转体; 以及固定部，其设置在所述圆筒部的轴向的下侧，并固定到所述电动机主体的固定体。 壳体通过密封机构在轴向方向上仅在圆柱形部分的一个位置处密封。