公开(公告)号：US20150042199A1

公开(公告)日：2015-02-12

申请号：US14378397

申请日：2013-02-07

Applicant: NHK SPRING CO., LTD.

Inventor： Kazuo Iwata ,  Yohei Kameda

IPC: H02K1/18 ,  H02K1/16

CPC classification number: H02K1/185 ,  H02K1/148 ,  H02K1/16 ,  H02K2213/03

Abstract: A stator core includes an annular yoke portion and tooth portions, wherein an outer peripheral edge of the yoke portion is attached to an inner peripheral surface of a motor case. The yoke portion includes displacement portions displaced by receiving the radially-inward pressing force from the motor case, and deformation portions deformed according to the displacements of the displacement portions to generate tensile stress so as to form tensile stress regions through which magnetic flux passes between the tooth portions and the yoke portion or so as to counterbalance compression stress generated by the pressing force from the motor case. The displacement portions perform the displacements by attaching the yoke portion to the annular member with the interference.

Abstract translation: 定子铁芯包括环形磁轭部分和齿部分，其中磁轭部分的外周边缘附接到电动机壳体的内周表面。 轭部包括通过从马达壳体接收径向向内的压力而移位的位移部分，以及根据位移部分的位移而变形的变形部分以产生拉伸应力，以形成拉伸应力区域，磁通量通过该拉伸应力区域 齿部和轭部，或者抵消来自马达壳体的按压力产生的压缩应力。 位移部通过将轭部与干涉件连接在环状构件上而进行位移。

公开(公告)号：US20150001985A1

公开(公告)日：2015-01-01

申请号：US14378482

申请日：2013-02-14

Applicant: NHK SPRING CO. LTD.

Inventor： Yohei Kameda ,  Kazuo Iwata ,  Ken Okura ,  Yoshiki Ono

IPC: H02K1/16

CPC classification number: H02K1/16 ,  H02K1/02 ,  H02K1/165 ,  H02K15/024 ,  H02K2213/03

Abstract: Provided is a stator core for a motor capable of facilitating an assembly work and parts management without increasing the number of components while suppressing leakage of magnetic flux passing through a flange to a coil. A stator core has an annular yoke portion and tooth portions inwardly protruding from an inner periphery of the yoke portion in a radial direction, wherein at a front end of the tooth portion inwardly protruding in the radial direction, a flange portion is provided so as to face a coil wound around the tooth portion and wherein to the flange portion, a compressive residual stress portion M is provided.

Abstract translation: 提供一种用于电动机的定子铁心，其能够在不增加部件数量的同时便于组装工作和部件管理，同时抑制通过法兰到线圈的磁通量的泄漏。 定子铁芯具有环形磁轭部分和从磁轭部分的内周沿径向向内突出的齿部分，其中在沿径向向内突出的齿部分的前端处设有凸缘部分， 面对缠绕在齿部上的线圈，并且其中在凸缘部分设置有压缩残余应力部分M.

公开(公告)号：US09570948B2

公开(公告)日：2017-02-14

申请号：US14785168

申请日：2014-04-15

Applicant: NHK SPRING CO., LTD.

Inventor： Yohei Kameda ,  Kazuo Iwata ,  Yuji Araoka ,  Yoshiki Ono

IPC: H02K1/27 ,  H02K15/03 ,  H02K29/03

CPC classification number: H02K1/276 ,  H02K1/27 ,  H02K1/2766 ,  H02K15/03 ,  H02K29/03

Abstract: A magnet plate used for a rotor core of a motor, includes a magnetic pole portion being set between an outer peripheral edge of a body portion and a magnet slot and having a radial width being smaller than a radial sectional width of the permanent magnet, and a higher hardness portion being formed into a hook shape along an end corner of the magnet slot and have a smaller width than the radial sectional width of the permanent magnet.

Abstract translation: 用于电动机的转子铁芯的磁板包括设置在主体部分的外周边缘和磁体槽之间并具有小于永磁体的径向截面宽度的径向宽度的磁极部分，以及 较高的硬度部分沿着磁体槽的端角形成钩状并且具有比永磁体的径向截面宽度更小的宽度。