Disk device having a clamper restricting member

1. A disk device comprising:

a turntable housed inside a casing, which is rotationally driven by a spindle motor and, for placing a disk thereon;

a clamper for rotatably holding the disk between the turntable and the clamper, which has a hook on a side opposite to a side on which the disk is held;

a loading mechanism for carrying the disk inserted from outside of the casing to between the turntable and the clamper;

a clamp arm which includes a clamper holder for rotatably holding the clamper by a claw fitted to the hook of the clamper with a clearance in a thickness direction of the clamper and an arm unit extending from the clamper holder and disposed pivotably on a pivot shaft positioned apart from the clamper holder, the clamp arm moving the clamper between a disk pressing position at which the disk is pressed onto the turntable and a retreat position apart from the disk pressing position toward a side remote from the turntable according to the pivot of the arm unit; and

a clamper restricting member including a resilient portion formed with a plurality of resilient claws so that the resilient claws can be brought into contact with an outer periphery of the clamper on the side opposite to the side, on which the disk is held, and on a side apart from the pivot shaft of the arm unit with the clamper moved to the retreat position;

wherein the clamper restricting member is formed so that its position is apart from the pivot shaft of the arm unit more than the center of rotation of the clamper, and the plurality of resilient claws are connected to each other at portions out of contact with the outer periphery of the clamper, thus to be integrated with each other, and

wherein the outer periphery of the clamper is moved to the retreat position by the pivot of the arm unit of the clamp arm and is brought into contact with the resilient claws of the clamper restricting member so as to be restricted, whereby moment acts at a contact portion, serving as a fulcrum, between the hook of the clamper and the claw of the clamp holder, and a side near the pivot shaft of the arm unit of the clamper is pivoted in a direction apart from the turntable.

2. A disk device as claimed in claim 1 , wherein the clamper restricting member includes a leaf spring having an opening at a center thereof.

3. A disk device as claimed in claim 2 , wherein the arm unit of the clamp arm is partly or entirely constituted of a resilient member; and

an elastic modulus of the resilient member is greater than that of the resilient portion of the clamper restricting member.