Disk device for disks having different sizes

Details Disk device for disks having different sizes Disk device for disks having different sizes

2000-10-10

2003-06-24

Nguyen, Hoa T. (Department: 2652)

Dynamic information storage or retrieval

With particular cabinet structure

Slotted for edgewise insertion of storage disc

Reexamination Certificate

active

06584055

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a disk device which can load information recording media of different types on a turntable and eject the information recording media from the turntable. Such information recording media may include an MD (Mini Disk) for example which is stored in a cartridge or a CD (Compact disk) which is used as a single disk.
2. Description of the Related Art
FIGS. 1 and 2
are schematic lateral figures of a loading device which is disclosed in for example JP-A-8-87796.
FIG. 3
is a similar schematic plan figure. In
FIGS. 1 and 2
, reference numeral
400
denotes a disk which is a circular information recording medium,
401
is a cartridge in which an information recording medium
401
a
is stored,
399
is an insertion aperture of a cartridge
401
or a disk
400
provided in the front face of the device.
410
is a first roller the surface of which is formed by a high friction elastic member such as rubber, and which rotates bi-directionally in the direction of the arrow
410
A or
410
B about a fixed shaft
410
a
.
420
is a second roller the surface of which is formed by a high friction elastic member such as rubber, and which rotates bi-directionally in the direction of the arrow
420
A or
420
B about a fixed shaft
420
a
.
423
is a second guiding body which is supported in free rotation about a fixed shaft
423
a
.
421
is a second guiding face which is provided on the second guiding body
423
and which has low frictional resistance due to the provision of a resin coating or the like.
422
is a second contacting means one end of which is fixed and the other end of which is compressed so that the second guiding face
421
of the second guiding body
423
is pressed onto the second roller
420
.
413
is a first guiding body which is provided on the second guiding body
423
and which is supported in free rotation about an shaft
413
a
.
411
is a first guiding face which is provided on a first guiding body
413
and which has low frictional resistance due to the provision of a resin coating or the like.
412
is a first contacting means one end of which is fixed to the second guiding body
423
and the other end of which is compressed so that the first guiding face
411
of the first guiding body
413
is pressed onto the first roller
410
.
424
is a cam which is normally pressed onto the second guiding body
423
by the second contacting means
422
. The cam
424
supports the second guiding body
423
by rotational movement so that the second guiding body
423
is supported in two positions, one high and one low.
301
is a head chassis which is supported in free rotation about an enlarging central shaft
301
a
.
310
is a head which performs recording and playing of the disk
400
or the information recording medium
401
a
stored in the cartridge
401
.
311
is a guide shaft which is fixed at both ends to the head chassis
301
. The guide shaft
311
supports the head
310
and guides the head
310
through sliding motion in the direction of the arrow
310
A or
310
B.
312
is a disk motor which is identified with the head chassis
301
.
313
is a turntable which is fixed to a rotational axis of the disk motor
312
and which is provided with a magnetic plate
313
a
on its upper face.
302
is a clamp arm which is supported to be rotatable about the enlarging central shaft
301
a
.
321
is a clamp which is supported to be rotatable about the clamp arm
302
and which is provided on the lower face of the magnetic plate
321
a
.
330
is a sensor which is disposed in proximity to an insertion aperture
399
and which detects a cartridge
401
or a disk
400
.
331
is a sensor which detects a recording/playing position of a disk
400
at the innermost position of the device.
428
is a cartridge stopper which determines a recording/playing position of a cartridge
401
.
With reference to
FIG. 3
,
415
is a disk position determining arm which is supported to be rotatable about a fixed shaft
415
a
.
416
is a disk position determining pin (stopper member) which is fixed to the distal rotational end of the disk position determining arm
415
and which extends downwardly to a height which obstructs the carrying path of the disk
400
.
417
is a compression means which provides pressure so that the disk position determining pin
416
rotates the disk positioning arm
415
in the direction of the arrow
415
A so that it separates from the positioned disk
400
.
425
is a disk position release arm which is supported to be rotatable about a fixed shaft
425
a
. The bent section
425
b
on the rotating distal end and is bent to a position which extends downwardly to a height which obstructs the carrying path of the cartridge
401
but which does not obstruct the carrying path of the disk
400
.
426
is a disk position release pin which is fixed on the disk position release arm
425
and which extends to a height which abuts with the disk position determining arm
415
.
427
is a pressing means which is compressed so that the disk position releasing arm
425
is rotated in the direction of the arrow
425
A. The disk position releasing arm
425
is held by the compression means
427
against the edge of the hole
1126
in which the disk position releasing pin
426
is fixed. The disk position determining arm
415
is secured to a fixed position abutting against the disk position release pin
426
by the pressure of the compression means
417
. When a carried disk
400
abuts with and is stopped by the disk position determining pin
416
, recording and playing of the disk
400
is performed in that position by the head
310
.
The operation of the conventional disk device will now be explained.
When a disk
400
is inserted into this disk device, the disk
400
is tightly gripped between the first roller
410
and the first guide face
411
by the first contacting means
412
. The disk
400
is carried to a fixed position in the disk device by the rotations of a first roller
410
. When a cartridge
401
is inserted, the cartridge
401
is tightly gripped between the second roller
420
and the second guide face
421
by the second contacting means
422
. The cartridge
401
is carried to a fixed position in the disk device by the rotations of a second roller
420
. In particular, while the disk
400
is carried, the second roller
420
and the second guide face
421
are removed from the disk carrying path. In the same way, while a cartridge
401
is being carried, the first roller
410
and the first guide face
411
are removed from the cartridge carrying path.
Since a conventional disk device is constructed as above, both first and second rollers are necessary to respectively carry a disk and a cartridge. Therefore, problems have arisen regarding increases in the complexity of the structure and reduced reliability.
SUMMARY OF THE INVENTION
The present invention is proposed to solve the above problems and has the object of providing a disk device with improved reliability and a simplified structure which can be used with any information recording media which is used by storage in a cartridge such as an MD or an information recording media which is used as a single disk such as a CD.
The disk device of the present invention comprises a circular disk carrying device which has a carrying roller for performing the loading and ejection of a circular disk, and a cartridge carrying device which is provided with a holder for supporting a cartridge, said cartridge carrying device loading a disk storing cartridge when the cartridge is inserted in the holder by the displacement of a carrying arm which comprises one part of a linking structure, which places a loaded disk stored in a cartridge on a turntable and which ejects a disk stored in a cartridge from a turntable.
In this way, it is possible to use circular disks or disk storing cartridges of differing sizes and to perform the loading and ejection of the respective disks with a relatively simple structure and with high reliability.
The d

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