WHEEL INTEGRAL TYPE ELECTRIC MOTOR

Japanese Patent JP3181835

B2

PROBLEM TO BE SOLVED: To provide a wheel integral type electric motor to improve cooling efficiency and facilitate manufacture maintenance.
SOLUTION: A wheel integral electric motor comprises a cylinder 2 having a cooling water passage 12 formed in the inner part and fitted in the outer periphery of an axle 1 to support a car body in a non-rotation state; a wheel 3 rotatably supported through a bearing 5 fitted in one end of the outer periphery of the cylinder 2; a rotor frame 4 and a permanent magnet 11 coupled to the wheel 3 and rotatably supported and through a bearing 6, fitted in the other end of the outer periphery of the cylinder coupled to the wheel 3, and rotationally driving the wheel 3; a stator coil 8 and a stator core 9 arranged in the vicinity of the inner side of the permanent magnet 11 and arranged on the outer periphery of the cylinder between the two bearings; and a cooling jacket 7 brought into surface contact with and fitted in the inner surface of the stator core 9 and fitted in the outer peripheral portion of the cylinder 2. The cooling jacket 7 is provided at an internal part with a plurality of cooling water passages 14 communicated with the cooling water passage 12, and cooling water flowing through cooling water passages 12 and 14 cools the stator core 9.

Koichi Matsuoka
Hiroshi Hata
Keiichiro Kondo
Hiroaki Mita
Seikichi Masuda
Hirofumi Ihara
Toshio Nemoto
Makoto Tsunekawa
Takashi Watanabe

JP21015196A

July 03, 2001

August 08, 1996

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財団法人鉄道総合技術研究所
株式会社日立製作所

B61C3/00; B61C9/46; B61C17/00; H02K9/19; (IPC1-7): B61C3/00

JP79993A
JP865960A

Yukihiko Takada (1 outside)

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