Dynamic information storage or retrieval – With particular cabinet structure – Slotted for edgewise insertion of storage disc
Patent
1996-10-29
1998-07-21
Cao, Allen
Dynamic information storage or retrieval
With particular cabinet structure
Slotted for edgewise insertion of storage disc
G11B 3302
Patent
active
057843511
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a loading apparatus for disk cartridge for use with a disk recording and reproducing apparatus for recording or reproducing and recording and reproducing information in or from a disk housed in a disk cartridge with an opening portion and a shutter which opens and closes the opening portion.
BACKGROUND ART
When a disk recording and reproducing apparatus records or reproduces and records and reproduces a disk, during a disk cartridge is loaded, i.e., in the disk cartridge loading operation, a shutter is opened and the disk exposed to the opening portion is chucked at its central portion to the turntable.
FIGS. 14 and 15 show a conventional disk cartridge loading apparatus for such disk recording and reproducing apparatus and in which a disk is loaded on the disk recording and reproducing apparatus while a shutter of a disk cartridge is being opened.
This disk loading apparatus 1 comprises a main chassis 5 to which a disk rotation mechanism 4 comprising a spindle motor 2 and a turntable 3 is attached, a cartridge holder 7 for holding a disk cartridge 6 such that the disk cartridge 6 can be loaded and unloaded, a slider 8 slidably moved over the main chassis 5 in the front and rear direction thereby to elevate or lower the cartridge holder 7 relative to the main chassis 5, i.e., turntable 3, and a clamper supporting plate 10 elevated and lowered by the slider 8 so as to move a disk clamper 9 inside or outside of a clamper insertion window 7a of the cartridge holder 7.
The cartridge holder 7 of this loading apparatus 1 includes a shutter opening and closing mechanism 12 for opening and closing the shutter 11 which opens and closes an opening portion 6a for exposing a part of a disk D housed in the disk cartridge 6 from the central portion to the outer peripheral direction. The shutter opening and closing mechanism 12 pivotally supports a shutter opening and closing arm 13 located at the second half portion of the cartridge holder 7, i.e., at the rearward of a chucking portion to which the turntable 6 and the disk clamper 9 are opposed and having an engagement protrusion 13a attached to the tip end thereof. Also, the shutter opening and closing mechanism is constantly spring-biased forward under spring force of a spring member 14.
In the thus arranged loading apparatus 1, the cartridge holder 7 is placed in the elevated position relative to the main chassis 5 by the slider in such a manner that the lower surface of the cartridge holder 7 is substantially in flush with the centering portion 3a of the turntable 3 under the condition that the disk cartridge 6 is not inserted into the cartridge holder 7. Also, the clamper supporting plate 10 is placed at the elevated position by the slider such that the disk damper may be prevented from being inserted into the inside from the clamper insertion window 7a of the cartridge holder 7.
Therefore, if the disk cartridge 6 is inserted into the cartridge holder 7, then the disk cartridge 6 is brought into the position at which the turntable 3 and the disk clamper 9 are opposed to each other under the condition that the shutter 11 is closed. Further, if the disk cartridge 6 is inserted and passed through the chucking portion, then the engagement protrusion 13a of the shutter opening and closing arm 13 of the shutter opening and closing mechanism 12 is engaged with the engagement portion of the shutter 11. Under this condition, if the disk cartridge 6 is pressed and further inserted, then the shutter opening and closing arm 13 is rotated backward against a spring-biasing force of the spring member 14. At the same time the shutter opening and closing arm 13 is rotated backward, the shutter 11 is opened and under the condition that the disk cartridge 6 is inserted into the end of the cartridge holder 7, the shutter opening and closing arm 13 also is rotated to the end, whereby the shutter 11 is fully opened and a part of the housed disk D from the central portion to the outer peripheral direction is exposed to the outside from
REFERENCES:
patent: 5386406 (1995-01-01), Ikuma et al.
patent: 5448434 (1995-09-01), Hirose
Cao Allen
Sony Corporation
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