发明申请
- 专利标题: Electric motor
- 专利标题(中): 电动马达
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申请号: US10587935申请日: 2005-02-08
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公开(公告)号: US20070188040A1公开(公告)日: 2007-08-16
- 发明人: Yoshichika Kawashima , Shunji Kumagai
- 申请人: Yoshichika Kawashima , Shunji Kumagai
- 优先权: JP204-033330 20040210
- 国际申请: PCT/JP05/01841 WO 20050208
- 主分类号: H02K23/26
- IPC分类号: H02K23/26 ; H02K13/14 ; H01R39/32
摘要:
In an electric motor having high-speed and low-speed brushes, durability is improved and vibration/noise is reduced. The electric motor has a low-speed brush 21a, a high-speed brush 21b, and a common brush 21c. Formed in the electric motor are a first coil 7A1 which is wound between given slots 11, and a second coil 7A2 which is wound in a direction opposite to a direction of the first coil 7A1 between slots 11 existing at positions point-symmetric to the given slots 11 with respect to a center of a rotation shaft. An armature coil 7 is formed by the first and second coils 7A1 and 7A2. If the armature coil 7 is short-circuited by the high-speed brush 21b, the first coil 7A1 and the second coil 7A2 of the short-circuited armature coil 7 exist at positions symmetric to each other with respect to an axis line extending through the center of the high-speed brush 21b and the center of the rotation shaft.
公开/授权文献
- US07557484B2 Electric motor 公开/授权日:2009-07-07