Patent ID: 9384776
Filing Date: 2016-07-05
CPC Classification: G11B

Claim Text:
1. A clamping device of a spindle motor, the device comprising: a case rotating with a rotation shaft and configured to be positioned in a central hole of a disk; a plurality of arms; and a plurality of elastic members elastically supporting the plurality of arms, respectively, wherein each elastic member is supported by a support protruder at a lateral inner surface of the case; wherein the case comprises a plurality of inclination surfaces, each at an inner surface of an upper portion of the case and corresponding to each arm, respectively, wherein each inclination surface has a thickness which tapers off in a direction approaching the rotation shaft, and wherein a thickness of each inclination surface, measured at a position farthest away from the rotation shaft, is less than a distance between the inner surface of the upper portion of the case and the support protruder.