Patent ID: 8572638
Filing Date: 2013-10-29
Classification: G11B,H02K,Y10T

Abstract:
1. A motor, comprising: a shaft rotatably inserted into a bearing assembly; and a rotor case fixedly fastened to the shaft, and the rotor case rotating together with the shaft and including a rotor hub fastened to an end of the shaft, an extending part extending in an outer-diameter direction from the rotor hub, a chamfered part along an outer peripheral edge of a bottom surface thereof, and a vertical extending part formed to be vertically extended downwardly in a shaft direction from an outer peripheral edge of the extending part and having the chamfered part formed on the bottom end surface thereof, wherein a fracture part having a rough surface is formed to come into contact with the chamfered part at a top portion of the chamfered part along an outer peripheral edge of the vertical extending part.