发明授权
- 专利标题: Claw pole generator, especially for bicycle generator hub
- 专利标题(中): 爪式发电机,特别适用于自行车发电机集线器
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申请号: US12485452申请日: 2009-06-16
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公开(公告)号: US07855486B2公开(公告)日: 2010-12-21
- 发明人: Hiroshi Hasegawa
- 申请人: Hiroshi Hasegawa
- 申请人地址: JP Osaka
- 专利权人: Shimano Inc.
- 当前专利权人: Shimano Inc.
- 当前专利权人地址: JP Osaka
- 代理机构: Global IP Counselors, LLP
- 优先权: JP2008-289437 20081112
- 主分类号: H02K1/12
- IPC分类号: H02K1/12
摘要:
A claw pole generator is basically provided with a circularly arranged permanent magnet and an internal stationary unit with a yoke and a coil. The yoke includes a first laminated yoke and a second laminated yoke. The first and second laminated yokes include a disc-shaped connecting portion arranged on one side of the coil and a plurality of outer circumferential yoke portions that are arranged between the coil and the permanent magnet with circumferential spaces in-between. Each of the outer circumferential yoke portions has a plurality of outer circumferential yoke layers laminated overlying each other along a radial direction with respect to the axial centerline of the coil. An outermost one of the outer circumferential yoke layers that is closest to the permanent magnet with a longer axial length than an innermost one of the outer circumferential yoke layers.
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