Title:
CLAW-POLE GENERATOR AND HUB DYNAMO FOR BICYCLE
Document Type and Number:
Japanese Patent JP3644636
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress an eddy current to be generated when power is generated and to improve generation efficiency in a claw-pole generator.
SOLUTION: A yoke 21 of the generator has a plurality of pairs of the first and the second laminated yokes 30, 31 provided on both sides in the axial direction of a coil 20 and respectively comprising a plurality of plate-like laminated pieces 32. Each of a plurality of the plate-like laminated pieces 32 has a yoke outer peripheral part 32a extended to the opposite side from one side or the other side in the axial direction and arranged between a permanent magnet 9 and the coil 20, and a yoke inner peripheral part 32b magnetically connected with the yoke outer peripheral part 32a and arranged on one side or the other side in the axial direction of the coil inner periphery. Also, the respective yoke inner peripheral parts 32b of a plurality of the pairs of the first and the second laminated yokes 30, 31 are opposed in the axial direction and their end parts in the axial direction are made into contact with each other. The yoke outer peripheral parts 32a are provided so as to be alternately located in the circumferential direction.
Inventors:
Takahiro Endo
Application Number:
JP2002134411A
Publication Date:
May 11, 2005
Filing Date:
May 09, 2002
Export Citation:
Assignee:
SHIMANO INC.
International Classes:
H02K1/14; H02K1/26; H02K21/22; H02K21/26; H02K7/18; (IPC1-7): H02K1/26; H02K21/26
Domestic Patent References:
| JP7236238A |
Attorney, Agent or Firm:
Yukio Ono
Kenichi Sui
Hidetada Kato
Kenichi Sui
Hidetada Kato