DISK CHUCKING DEVICE

摘要

PURPOSE: A disc chucking apparatus is provided to prevent eccentricity by uniformly pressing the inner circumference of a disc by elastically supporting chuck pins respectively using a plurality of a second elastic member. CONSTITUTION: A disc chucking apparatus is composed of a boss(10), a first elastic member(20), a plurality of a second elastic members(30), and chuck pins(40). The boss is coupled to a rotor. The first elastic member comprises an inner circumference that surrounds the boss. The first elastic member has elasticity in a radial direction from the center of the boss. The second elastic member is elastically supported with the first elastic member. The second elastic member is arranged in a radial shape from the first elastic member. The chuck pins are elastically supported by the second elastic members, respectively. The chuck pins presses the disc.