Disk clamping device
AssigneePioneer Electronic Corporation
InventorsToshihiko Kurihara, Tadashi Funabashi
Life of this patent
Estimating the term…
Abstract
A disk clamping device for clamping either one of a disk having a small center hole, such as a compact disk, and a disk having a larger center hole, such as a video disk, to a turntable with which the diameter of the turntable can be increased to reduce the amount of bending and vibration of the disk while it is being played. A first hub for centering a disk having a small center hole is mounted on the disk drive shaft of the drive motor, while a second hub, separate from the first hub, is mounted on the other side of the disk playing position together with a clamper. The second hub has a clamping surface which is brought into contact with the surface of the disk having a small diameter hole when engaged with the disk drive shaft.
Claims7
A disk clamping device, comprising:
- a turntable mounted fixedly on a disk drive shaft of a motor;
- a first hub for centering a disk having a small diameter hole, said first hub being mounted on said disk drive shaft;
- a second hub for centering a disk having a large diameter hole, said second hub being separated from said first hub and movably mounted to engage said disk drive shaft and having a clamping surface which is brought into contact with a surface of said disk having a small diameter hole when engaged with said disk drive shaft;
- and
- a separate clamper movably mounted so as to be brought into contact with a surface of said disk having said large diameter hole, wherein when said clamping surface of said second hub is brought into contact with said surface of said disk having a small diameter hole, said clamper is positioned away from said surface of said disk having a small diameter hole.
Dependencies are inferred from the claim text.