Shutter for preventing double insertion and disc player having t

Details Shutter for preventing double insertion and disc player having t Shutter for preventing double insertion and disc player having t

1994-12-28

1997-03-11

Levy, Stuart S.

Dynamic information storage or retrieval

With particular cabinet structure

Slotted for edgewise insertion of storage disc

360 9906, G11B 3302, G11B 1704, G11B 17035

Patent

active

056108923

ABSTRACT:
A shutter for preventing double insertion with a simple machinery mechanism without giving a disc in a disc player impacts when inserting another disc, and a disc player having the shutter. The shutter has elastic members located above a disc cartridge insertion opening. At the lower end of the elastic members a shutter plate for opening and shutting vertically is provided. A lower part of an inside wall of the shutter plate is inclined toward its outside wall. Guide pieces are provided at side edges of shutter plate for guiding the shutter plate in the vertical direction. When the disc cartridge is inserted into a tray through the disc cartridge insertion opening which is projected outward of a housing, a front portion of the tray is inserted into the housing, and the shutter plate disposed thereon is slid straight down to shut the disc cartridge insertion opening. Thus, since the shutter is closed in a loading state, another disc can not be double inserted. In an ejecting operation, the tray with the disc cartridge is moved forward, and at this time, the tray pushes to raise up the inclined inside wall of the shutter to be able to eject the disc cartridge.

REFERENCES:
patent: 4691257 (1987-09-01), Taguchi
patent: 5067121 (1991-11-01), Einhaus
patent: 5172362 (1992-12-01), Hattori et al.
patent: 5300763 (1994-04-01), Ito et al.
patent: 5301179 (1994-04-01), Okamoto

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