Invention Grant
- Patent Title: Claw pole type motor and pump
- Patent Title (中): 爪式电机和泵
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Application No.: US12232556Application Date: 2008-09-19
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Publication No.: US07839046B2Publication Date: 2010-11-23
- Inventor: Toshiharu Hashimoto , Hiroki Inoue , Hidekazu Yabuuchi , Masaaki Nishikata , Shinji Suematsu
- Applicant: Toshiharu Hashimoto , Hiroki Inoue , Hidekazu Yabuuchi , Masaaki Nishikata , Shinji Suematsu
- Applicant Address: JP Osaka
- Assignee: Panasonic Electric Works Co., Ltd.
- Current Assignee: Panasonic Electric Works Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Bacon & Thomas, PLLC
- Priority: JP2007-243423 20070920
- Main IPC: H02K1/12
- IPC: H02K1/12 ; H02K1/14

Abstract:
A claw pole type motor includes a rotor having a magnet arranged on an outer circumferential surface thereof and a stator including an annular iron core and an annular coil received within the iron core. The iron core includes a yoke portion opened in an inner circumferential surface opposite to the rotor, a plurality of upper claw-shaped magnetic poles and a plurality of lower claw-shaped magnetic poles which are arranged along an inner circumferential surface of the annular coil. The upper/lower claw-shaped magnetic poles are curved to extend axially downwardly/upwardly from an upper/lower inner edge of the yoke portion, respectively. The upper and the low claw-shaped magnetic poles are alternately arranged along a circumferential direction of the iron core. The yoke portion has cutout portions formed in non-magnetic path regions which do not include magnetic paths through which magnetic flux flows between neighboring claw-shaped magnetic poles across the annular coil.
Public/Granted literature
- US20090079293A1 Claw pole type motor and pump Public/Granted day:2009-03-26
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