| US 7,375,450 B2 | ||
| Hub unit for use in electrically movable wheels and vehicle comprising the hub unit | ||
| Tatsuaki Tanaka, Kasai (Japan); Kazuhiro Tomoshige, Kasai (Japan); and Ryohei Adachi, Hyogo (Japan) | ||
| Assigned to Sanyo Electric Co., Ltd., Osaka (Japan) | ||
| Filed on May 25, 2005, as Appl. No. 11/137,236. | ||
| Claims priority of application No. 2004-156966 (JP), filed on May 27, 2004. | ||
| Prior Publication US 2005/0264111 A1, Dec. 01, 2005 | ||
| Int. Cl. H02K 1/18 (2006.01); H02K 1/22 (2006.01); H02K 1/28 (2006.01); H02K 7/00 (2006.01) | ||
| U.S. Cl. 310—217 [310/75 C] | 4 Claims |
| 1. An electrically movable wheel hub unit comprising a motor composed of a stator and a rotor, a hub enclosing the motor therein
and rotatingly drivable by the rotation of the rotor, and a fixing support shaft disposed on an axis of rotation of the hub
and projecting from the motor housing fixedly relative thereto, the support shaft projecting outward beyond the hub,
the stator comprising: a laminated stator core having a plurality of laminated core units, each of said core units having a predetermined number
of stacked non-split annular metal plates blanked out, said stator core is formed by a predetermined number of said core units
displaced from one another in the direction of rotation through an angle obtained by dividing 360 degrees by the number of
the units,
a pair of end plates opposed to each other with the stack of metal plates held therebetween and fastened to each other by
tightening up bolts inserted through the stack of metal plates, whereby the end plates are caused to clamp the metal plate
stack therebetween, and
the stator having an outer peripheral surface left exposed to face an inner surface of the hub between the end plates.
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