Holding device for an optical disk drive

A holding device for an optical disk drive, the holding device comprising:

• a base lying on a plane, the base including an annular wall extending in a direction substantially orthogonal to the plane on which the base lies, the annular wall including a plurality of notches;
• a plurality of holding members mounted in the annular wall and spaced along an angular direction, the holding members together forming a circular ring, each said holding member including a pressing member extending beyond the annular wall of the base via an associated one of the notches of the annular wall;
• and
• a plurality of elastic elements, each said elastic element being mounted between two of said holding members adjacent to each other;
• wherein a diameter of the circular ring formed by the holding members changes in response to expansion or compression of the elastic elements, causing the pressing member of each said holding member to move between a holding position outside the annular wall and a release position inside the annular wall.