发明授权
- 专利标题: Direct-current motor with improved branched tooth arrangement
- 专利标题(中): 具有改进的分支齿布置的直流马达
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申请号: US12564703申请日: 2009-09-22
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公开(公告)号: US08350437B2公开(公告)日: 2013-01-08
- 发明人: Yoshiaki Doushita , Keita Kawai , Kazumitsu Moriya , Toshio Yamamoto , Masaya Horikawa , Masaaki Shimizu
- 申请人: Yoshiaki Doushita , Keita Kawai , Kazumitsu Moriya , Toshio Yamamoto , Masaya Horikawa , Masaaki Shimizu
- 申请人地址: JP Shizuoka-Ken
- 专利权人: Asmo Co., Ltd.
- 当前专利权人: Asmo Co., Ltd.
- 当前专利权人地址: JP Shizuoka-Ken
- 代理机构: Duane Morris LLP
- 代理商 J. Rodman Steele, Jr.; Gregory M. Lefkowitz
- 优先权: JP2009-203069 20090902
- 主分类号: H02K3/28
- IPC分类号: H02K3/28 ; H02K3/20 ; H02K23/26
摘要:
A motor is provided that includes magnetic poles, an armature core, armature coils, a commutator, and power supply brushes. The armature core includes teeth arranged in the circumferential direction to extend in a radial pattern. The armature coils include inner layer coils and outer layer coils. Each of the inner layer coils is wound around radially proximal end portions of two circumferentially adjacent teeth or a radially proximal end portion of one of the teeth. The inner layer coils are arranged in the circumferential direction without overlapping each other in the radial direction. Each of the outer layer coils is wound around radially distal end portions of two circumferentially adjacent teeth by distributed winding. The outer layer coils are arranged radially outward of the inner layer coils and are arranged in the circumferential direction without overlapping each other in the radial direction. The circumferential center of the inner layer coils and the circumferential center of the outer layer coils are displaced in the circumferential direction.
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