Invention Grant
- Patent Title: Direct-current motor with improved branched tooth arrangement
- Patent Title (中): 具有改进的分支齿布置的直流马达
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Application No.: US12564703Application Date: 2009-09-22
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Publication No.: US08350437B2Publication Date: 2013-01-08
- Inventor: Yoshiaki Doushita , Keita Kawai , Kazumitsu Moriya , Toshio Yamamoto , Masaya Horikawa , Masaaki Shimizu
- Applicant: Yoshiaki Doushita , Keita Kawai , Kazumitsu Moriya , Toshio Yamamoto , Masaya Horikawa , Masaaki Shimizu
- Applicant Address: JP Shizuoka-Ken
- Assignee: Asmo Co., Ltd.
- Current Assignee: Asmo Co., Ltd.
- Current Assignee Address: JP Shizuoka-Ken
- Agency: Duane Morris LLP
- Agent J. Rodman Steele, Jr.; Gregory M. Lefkowitz
- Priority: JP2009-203069 20090902
- Main IPC: H02K3/28
- IPC: H02K3/28 ; H02K3/20 ; H02K23/26

Abstract:
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.
Public/Granted literature
- US20110050025A1 DIRECT-CURRENT MOTOR AND MANUFACTURING METHOD FOR THE DIRECT-CURRENT MOTOR Public/Granted day:2011-03-03
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