公开(公告)号：US20030080642A1

公开(公告)日：2003-05-01

申请号：US10233656

申请日：2002-09-04

申请人： KOYO SEIKO CO., LTD.

发明人： Sadaaki Mori ,  Hirohide Inayama ,  Atsushi Ishihara ,  Tomofumi Takahashi ,  Minoru Kitabayashi ,  Tetsuo Horie

IPC分类号： H02K021/12

CPC分类号： H02K1/276 ,  H02K1/2766 ,  H02K21/14

摘要： A bridge (8) in conformity with a tooth opening angle of the stator (1) is provided between a permanent magnet (5) and a permanent magnet (5) in a rotor (4), so that a magnetic flux for a reluctance torque is made to pass an inner side of the permanent magnet (5). An opening angle of each of ribs (7) on both sides of the permanent magnet (5) is set to be equal to or smaller than the teeth interval opening angle and equal to or larger than a half thereof. Thereby, reluctance of the rib (7) against a magnetic flux in a circumferential direction is increased and leakage of the magnetic flux of the permanent magnet (5) is prevented.

摘要翻译： 在转子（4）中的永久磁铁（5）和永久磁铁（5）之间设有与定子（1）的齿孔角度一致的桥（8），以使得磁阻转矩 使永磁体（5）的内侧通过。 永磁体（5）的两侧的肋（7）的开口角度被设定为等于或小于齿间隔开度，等于或大于其一半。 由此，肋（7）在圆周方向上的磁通量的磁阻增加，并且防止了永磁体（5）的磁通量的泄漏。

公开(公告)号：US20020140308A1

公开(公告)日：2002-10-03

申请号：US10068344

申请日：2002-02-06

申请人： KOYO SEIKO CO. LTD.

发明人： Hirohide Inayama ,  Hideki Jonokuchi ,  Sadaaki Mori ,  Atsushi Ishihara ,  Tomofumi Takahashi ,  Minoru Kitabayashi ,  Tetsuo Horie

IPC分类号： H02K021/12

CPC分类号： H02K1/278 ,  H02K29/03 ,  H02K2201/06 ,  Y10T29/49009

摘要： A brushless DC motor including a stator having plural slots; and a rotor which has plural permanent magnets and is divided into three rotor blocks in a rotation axis direction, the three rotor blocks being layered so that the arrangement angles of the rotor blocks differ from each other by an amount of a mechanical angle in a rotary direction that is equivalent to one third of a pulsation period of cogging torque generated by the rotor and stator. A brushless DC motor including a rotor having plural magnetic poles provided at an equal pitch in a circumferential direction by mounting permanent magnets in magnet mounting holes; and a stator having plural slots arranged at an equal pitch in a circumferential direction. The magnetic poles of the rotor include magnetic poles whose magnet deviation angle formed by the central line of an effective polar opening angle and the central line of the magnet mounting hole is the first angle; and magnetic poles whose magnet deviation angle is the second angle different from the first angle.

摘要翻译： 一种无刷直流电动机，包括具有多个槽的定子; 以及具有多个永久磁铁并沿旋转轴线方向分成三个转子块的转子，所述三个转子块被层叠，使得转子块的配置角度彼此相差一个旋转中的机械角度的量 方向相当于由转子和定子产生的齿槽转矩的脉动周期的三分之一。 一种无刷直流电动机，其包括通过将永磁体安装在磁铁安装孔中而具有沿周向等间距设置的多个磁极的转子; 以及具有沿圆周方向等间距排列的多个槽的定子。 转子的磁极包括由有效极性开放角度的中心线和磁体安装孔的中心线形成的磁体偏离角度为第一角度的磁极; 磁极的磁偏离角度与第一角度不同的第二角度。