Patent ID: 8645981

Claim:
An apparatus for chucking a disk placed onto a rotor casing coupled to a motor for providing a rotating force to the rotor casing, the apparatus comprising: a central boss coupled to a rotating shaft of the motor; a guide extending from the central boss outwards, the guide being inserted into a center hole of the disk; and a chucking unit extending from the central boss outwards, the chucking unit being elastically deformable inwards when being pushed by the disk that is fitted over the guide, wherein the chucking unit is integrated with the central boss, and the chucking unit comprises: a lower horizontal part connected with the central boss, extending from a lower portion of the central boss outwards in a horizontal direction; a vertical part bent from an outer end of the lower horizontal part upwards, the vertical part extending a predetermined length in a direction inclined outwards; an upper horizontal part extending from an upper end of the vertical part inwards in a horizontal direction; and an elastic member provided between the central boss and the vertical part to provide an elastic force inwards to the vertical part, the elastic member being located in a space which is formed by the lower horizontal part, the vertical part and the upper horizontal part.