公开(公告)号：US20160065015A1

公开(公告)日：2016-03-03

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

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。

公开(公告)号：US20220186331A1

公开(公告)日：2022-06-16

申请号：US17593103

申请日：2020-03-27

Applicant: NIPPON STEEL CORPORATION ,  NHK SPRING CO., LTD.

Inventor： Yukinobu NAGATA ,  Yuki MOTEGI ,  Yuji ARAOKA ,  Ken OU

IPC: C21D9/08 ,  B23K11/087 ,  B23K11/16 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/32 ,  C22C38/28

Abstract: This electric resistance-welded steel tube for a hollow stabilizer is an electric resistance-welded steel tube for a hollow stabilizer including a base material portion and a weld, in which the base material portion has predetermined chemical components, a wall thickness of the base material portion is 2.0 to 6.0 mm, an outer diameter of the electric resistance-welded steel tube is 10 to 40 mm, in a C direction cross section of the electric resistance-welded steel tube, a recessed bead cut is present in a region including the weld on an inner surface side of the electric resistance-welded steel tube, when an imaginary line is drawn from one opening edge to the other opening edge of the bead cut in a shortest distance, a maximum depth from the imaginary line to a bottom of the bead cut is 300 μm or less, a maximum inclusion diameter that is included in the base material portion is 300 μm or less, in the base material portion of the electric resistance-welded steel tube, a surface roughness of the inner surface side is 300 μm or less in terms of a maximum profile valley depth Rv, and maximum hardness of the electric resistance-welded steel tube including the weld is 300 Hv or less.