公开(公告)号：US09431859B2

公开(公告)日：2016-08-30

申请号：US14142218

申请日：2013-12-27

申请人： DENSO CORPORATION

发明人： Makoto Taniguchi ,  Hiroki Tomizawa ,  Tatsuya Inagaki ,  Masahiro Goto

IPC分类号： H02K21/12 ,  H02K1/27

CPC分类号： H02K1/2746 ,  H02K2213/03

摘要： A motor is provided having a consequent-pole type rotor that has soft magnetic material poles and magnetic poles positioned around the rotor in an alternating manner. A convex surface on each of the poles is formed as a surface in which a midpoint of the convex surface has a radial distance from the rotation axis that is greater than a radial distance of the circumferential edges of the convex surface from the rotation axis. A radial width of a first magnetism transfer part of a cylindrical yoke and a radial width of a second magnetism transfer part of the magnetic pole fulfill a relationship such that an appropriate balance of the magnetic resistance between the first magnetism transfer part and the second magnetism transfer part is achieved. As a result, cogging torque is reduced without reducing output torque.

摘要翻译： 提供一种电动机，其具有随后的极型转子，其具有以交替方式设置在转子周围的软磁性材料极和磁极。 每个极上的凸表面形成为凸表面的中点距离旋转轴线的径向距离大于凸表面的周向边缘与旋转轴线的径向距离的表面。 圆柱形磁轭的第一磁性传递部分的径向宽度和磁极的第二磁性传递部分的径向宽度实现了这样的关系，使得第一磁传递部分和第二磁传递部分之间的磁阻的适当平衡 部分实现。 结果，齿槽转矩减小而不降低输出转矩。

公开(公告)号：US20140184009A1

公开(公告)日：2014-07-03

申请号：US14142218

申请日：2013-12-27

申请人： DENSO CORPORATION

发明人： Makoto TANIGUCHI ,  Hiroki Tomizawa ,  Tatsuya Inagaki ,  Masahiro Goto

IPC分类号： H02K1/27

CPC分类号： H02K1/2746 ,  H02K2213/03

摘要： A motor is provided having a consequent-pole type rotor that has soft magnetic material poles and magnetic poles positioned around the rotor in an alternating manner. A convex surface on each of the poles is formed as a surface in which a midpoint of the convex surface has a radial distance from the rotation axis that is greater than a radial distance of the circumferential edges of the convex surface from the rotation axis. A radial width of a first magnetism transfer part of a cylindrical yoke and a radial width of a second magnetism transfer part of the magnetic pole fulfill a relationship such that an appropriate balance of the magnetic resistance between the first magnetism transfer part and the second magnetism transfer part is achieved. As a result, cogging torque is reduced without reducing output torque.

摘要翻译： 提供一种电动机，其具有随后的极型转子，其具有以交替方式设置在转子周围的软磁性材料极和磁极。 每个极上的凸表面形成为凸表面的中点距离旋转轴线的径向距离大于凸表面的周向边缘与旋转轴线的径向距离的表面。 圆柱形磁轭的第一磁性传递部分的径向宽度和磁极的第二磁性传递部分的径向宽度实现了这样的关系，使得第一磁传递部分和第二磁传递部分之间的磁阻的适当平衡 部分实现。 结果，齿槽转矩减小而不降低输出转矩。

公开(公告)号：US09793768B2

公开(公告)日：2017-10-17

申请号：US14450404

申请日：2014-08-04

申请人： DENSO CORPORATION

发明人： Asuka Tanaka ,  Tatsuya Inagaki

IPC分类号： H02K1/27 ,  H02K29/03

CPC分类号： H02K1/2746 ,  H02K1/276 ,  H02K1/278 ,  H02K29/03 ,  H02K2213/03

摘要： A rotor has a projection part projected from an inner wall of a central hole part toward a central axis and a rib part defined between opening parts adjacent with each other in a circumferential direction. A first imaginary straight line is defined to extend from the central axis outward in a radial direction through a center of the projection part. The projection part is formed so that the first imaginary straight line passes the opening part. A second imaginary straight line is defined to extend from the central axis outward in the radial direction through a center of the rib part. The rib part is formed so that the second imaginary straight line passes a center of a pole part or an intermediate position between pole parts adjacent with each other in the circumferential direction.