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US Patent 7994684 Automotive alternating-current generator

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Patent
Patent
1

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
79946841
Patent Inventor Names
Yoshinori Miyamoto1
Kouki Naka1
Masaya Inoue1
Toshiyuki Yoshizawa1
Haruyuki Kometani1
Hiroyuki Akita1
Kanji Shinkawa1
Date of Patent
August 9, 2011
1
Patent Application Number
123769691
Date Filed
August 22, 2007
1
Patent Primary Examiner
‌
Quyen Leung
1
Patent abstract

An automotive generator that includes a Lundell rotor. First and second protruding portions are disposed so as to project from inner wall surfaces of portions of first and second yoke portions at root portions of first and second claw-shaped magnetic pole portions, and first and second recess portions are recessed into inner wall surfaces of portions of the first and second yoke portions that face the second and first protruding portions. In addition, a shape of a region in which the field coil is disposed is configured into a wave shape that has a cross-sectional shape in a plane that includes a central axis of the pole core that is approximately constant in a circumferential direction and that zigzags alternately in an axial direction at positions of each of the first and second claw-shaped magnetic pole portions.

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