Patent ID: 7456539
Filing Date: 2008-11-25
Classification: B60L,H02K,Y02T

Abstract:
1. A rotor comprising: a rotor core fixedly provided on a rotational shaft and having a hole, the shaft extending along an axial direction thereof; a magnet inserted into the hole; and a filling portion injected into a gap between a side surface of the hole and a side surface of the magnet, wherein: the filling portion is injected into the gap at a first hole on an end surface of the rotor core and discharged from a second hole on the end surface of the rotor core, at least one of the magnet and the rotor core has a spread-promoting portion formed therein for promoting spread of the filling portion injected into the gap, and the spread-promoting portion comprises a plurality of elongated elements formed on the magnet, a direction in which the elements elongate being non-parallel to the axial direction of the shaft.