Patent ID: 7737602
Filing Date: 2010-06-15
Classification: B21K,H02K,Y10T

Abstract:
1. A rotating electrical machine comprising: a rotor core made up of a claw-equipped core having claws projecting in the axial direction and a tubular yoke disposed on the inner peripheral side of said claws in contact with an axially-faced side surface of said claw-equipped core; a field coil disposed around said yoke a stator core disposed with a gap left relative to said claw-equipped core; and a groove provided in one of said claw-equipped core and said yoke, wherein said yoke is joined to said claw-equipped core by plastic flow into the groove provided in one of said claw equipped core and said yoke; and a pressing mark generated in joining the yoke to the claw-equipped core by plastic flow is formed in said claw-equipped core, wherein said yoke is joined to said claw-equipped core joined within a joining hole in said claw equipped core that does not extend entirely through the claw-equipped core along said axially-faced side surface.