公开(公告)号：US20140117792A1

公开(公告)日：2014-05-01

申请号：US14066930

申请日：2013-10-30

Applicant: DENSO CORPORATION

Inventor： Akihito NAITOU

IPC: H02K7/04

CPC classification number: H02K7/04 ,  H02K1/2746 ,  H02K1/28 ,  H02K21/14 ,  H02K2213/03

Abstract: A rotor for a rotating electric machine has a core body and a magnet. The core body has a through-hole, a first polar portion, and a second polar portion. The first polar portion and the second polar portion are alternately arranged in the circumference direction. The magnet is disposed on the core body at a position corresponding to the first polar portion or the second polar portion. The through-hole has an arc-shaped surface having a first curvature radius. The first polar portion has an arc-shaped surface having a second curvature radius. The second polar portion has an arc-shaped surface having a third curvature radius. The first curvature radius is larger than or equal to the second curvature radius.The first curvature radius is larger than or equal to the third curvature radius.

Abstract translation: 用于旋转电机的转子具有芯体和磁体。 芯体具有通孔，第一极性部分和第二极性部分。 第一极性部分和第二极性部分沿圆周方向交替布置。 磁体在对应于第一极性部分或第二极性部分的位置处设置在芯体上。 通孔具有具有第一曲率半径的弧形表面。 第一极区具有具有第二曲率半径的弧形表面。 第二极性部分具有具有第三曲率半径的弧形表面。 第一曲率半径大于或等于第二曲率半径。 第一曲率半径大于或等于第三曲率半径。

公开(公告)号：US20140145564A1

公开(公告)日：2014-05-29

申请号：US14027625

申请日：2013-09-16

Applicant: DENSO CORPORATION

Inventor： Makoto TANIGUCHI ,  Jirou HAYASHI ,  Tatsuya INAGAKI ,  Akihito NAITOU ,  Hiroki TOMIZAWA ,  Masaaki YAMADA ,  Masashi YAMASAKI ,  Yasufumi MATSUO ,  Shuhei MIYACHI ,  Nobuhiko URYU

IPC: H02K11/00

CPC classification number: H02K11/215 ,  H02K3/12 ,  H02K5/1732

Abstract: A housing and a rotary shaft of a motor are formed of non-magnetic material. A soft magnetic member is provided between a first axial end surface of a fixed core and a bearing. The soft magnetic member is provided on the fixed core side relative to the first bearing thereby to suppress magnetic flux leaking to a vicinity of one end part of the rotary shaft by leading the magnetic flux, which is generated from a rotor, to the rotor core through the fixed core and a casing. A magnetic angular position sensor fixed to one end part of the rotary shaft can detect a magnetic angular position of the rotor accurately without being affected by external magnetic field. As a result, noise generated by vibration of the motor can be suppressed.

Abstract translation: 电动机的壳体和旋转轴由非磁性材料形成。 在固定铁心的第一轴向端面和轴承之间设置软磁性构件。 软磁性构件相对于第一轴承设置在固定芯侧，从而通过将从转子产生的磁通引导到转子铁心来抑制向旋转轴的一个端部附近泄漏的磁通量 通过固定芯和套管。 固定在旋转轴的一端的磁性角位置传感器可以精确地检测转子的磁角位置而不受外部磁场的影响。 结果，可以抑制由电动机的振动产生的噪声。