Title:
OPTICAL DISK DRIVING DEVICE
Document Type and Number:
Japanese Patent JP2587581
Kind Code:
B2
Abstract:
PURPOSE: To provide the compact disk driving device, which surely performs disk clamp, by pulling an entire disk to the side of a rotary driving part with a magnetic force generating means and a magnetic member inside a hub.
CONSTITUTION: On a turn table 22 fixed to a spindle 21 of a disk motor 20, an information recording part 2 is formed on the side of a first side 1a and the clamp area of a second side 1b of a unit disk 1, to which a hub 10 is fixed, is held. Then, the central position of the optical disk with hub is decided by engaging a center hole 12a of a magnetic substance 12 of the hub 10 with the spindle 21. On the other hand, the clamping force of the optical disk with hub is surely clamped by magnetic attraction force between the magnetic substance 12 of the hub 10 and a magnet 23 fixed inside the turn table 22. Therefore, even when the fixing of the disk 1 and the hub 10 is released, the disk 1 can be surely depressed and the compact disk driving device, which surely performs disk clamp, can be provided.
Inventors:
OKAZAKI KICHIZAEMON
Application Number:
JP4215494A
Publication Date:
March 05, 1997
Filing Date:
March 14, 1994
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G11B7/24097; G11B17/028; G11B23/00; (IPC1-7): G11B23/00; G11B7/24
Domestic Patent References:
| JP62129985A | ||||
| JP6145759U |
Attorney, Agent or Firm:
Kenjiro Take