Patent ID: 7923889
Filing Date: 2011-04-12
Classification: H02K,Y10T

Abstract:
1. A manufacturing method of a rotor for an electric motor including a core formed of stacked steel plates, each of which has a center hole, and a shaft inserted through the center hole of the core, in which method the shaft is deformed to fit an end plate in a state where the end plate is pressed against the core, the manufacturing method comprising deforming a deformed portion of the shaft that engages with an edge of the end plate, along a core-side edge portion and a no core-side edge portion of the edge of the end plate with respect to a thickness direction of the edge of the end plate to cause the deformed portion to be in the same shape as a shape of the edge of the end plate, wherein the shape of the deformed portion on the core side in the thickness direction of the edge of the end plate is such that the deformed portion fits in between the end plate and the core, so that a load in a direction of the core that occurs when the deformed portion is deformed on the no core side in the thickness direction of the edge of the end plate is received.