Patent ID: 8698371
Filing Date: 2014-04-15
Classification: H02K,Y10T

Abstract:
1. A rotor comprising: a core made of a laminated steel sheet assembly including a plurality of laminated magnetic steel sheets each having a flat plate shape, the core being formed with a through hole at a rotation center; a rotation transmitting member inserted in the through hole of the core; an inner-peripheral-side welded part provided on an inner peripheral side of the core to join between the magnetic steel sheets constituting the laminated steel sheet assembly, the inner-peripheral-side welded part being a welded section that joins the laminated steel sheets to the rotation transmitting member over a laminating direction of the magnetic steel sheets; and an outer-peripheral-side welded part provided on an outer peripheral side of the core and at an end in the laminating direction, the outer-peripheral-side welded part being a welded section that joins between the steel sheets including a steel sheet forming an end face of the core in the laminating direction, the through hole for the rotation transmitting member being inserted defining a first through hole, and the core further being formed with a second through hole located adjacent to the first through hole, the first and second through holes extending over the laminating direction, and the inner-peripheral-side welded part being a welded section that joins a portion of the core between the first through hole and the second through hole to the rotation transmitting member.