Disk device

Details Disk device Disk device

2000-05-18

2002-09-17

Tupper, Robert S. (Department: 2652)

Dynamic information storage or retrieval

With particular cabinet structure

Slotted for edgewise insertion of storage disc

Reexamination Certificate

active

06452888

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a disk device which loads two types (large and small) of disk onto a turntable of a playing unit (floating deck) and which expels (ejects) the disk from the turntable.
PRIOR ART
FIG. 1
is a schematic view of a disk device mounted in a vehicle. In
FIG. 1
, reference numeral
1
denotes a disk device,
2
is a chassis (frame) which is disposed in a vehicle,
3
is a playing unit which rotates a turntable and reads information recorded on the disk D which is mounted on the turntable.
4
is a conveying unit which inserts the disk D from the disk insertion aperture formed in the chassis into the chassis, which conveys the disk to the turntable of the playing unit
3
, which conveys a disk from the top of the turntable to the disk insertion aperture and which ejects the disk outside the chassis
2
.
5
is a flexible member such as an oil clamper which prevents the transmission of vibrations from the vehicle to the playing unit which a disk D is being played and which is disposed between the chassis
2
and the playing unit
3
.
In the playing unit
3
,
11
is a playing unit base which stores a motor or the like for the purpose of driving the motor or pickup which rotates the turntable.
11
a
is a rotation shaft of a pressuring arm (arm clamper) and which is provided on the playing unit base
11
.
12
is a turntable which rotates the mounted disk D and which is provided on the playing unit base
11
.
13
is a pressuring arm which rotates about the rotational shaft
11
a
, provided on the playing unit base, in the direction a-b.
14
is a disk clamp which grips the disk D with the turntable
12
by rotating the pressuring arm
13
towards the turntable
12
and which is mounted on the pressuring arm
13
.
15
is a pickup which reads information recorded on the disk D and which is provided on the playing unit base
11
.
In the conveying unit
4
,
21
is a disk guiding section which is secured onto the upper plate of the chassis
2
.
22
is a conveying roller which grips a disk D, which is inserted into the chassis
2
from the disk insertion aperture, with the disk guiding section
21
, which conveys a disk D to the playing unit
3
by rotating in a positive direction while a disk D is gripped, which grips a disk D which has been conveyed to the playing unit
3
with the disk guiding section
21
, and which conveys a disk D to the disk insertion aperture by rotating in the opposite direction while a disk D is gripped and which ejects a disk D outside the chassis.
In
FIG. 1
, the pressuring arm
13
which is provided on the playing unit
3
and the conveying roller
22
which is provided on the conveying unit
4
are driven by sliding displacement in the direction of disk ejection and direction of disk insertion. The fixation and release of the playing unit
3
are performed by a cam plate. These operations are not shown in the figures and their explanation will be omitted below.
The operation of the invention will now be explained.
Disk Loading
When a disk D is inserted into the chassis
2
from the disk insertion mouth, the disk D is gripped by the disk guiding section
21
. The disk is conveyed to the playing unit
3
by the rotations of the conveying roller
22
. A disk D which has been conveyed to the playing unit
3
is gripped by the turntable
12
and the disk clamp
14
due to the pressuring arm is rotating towards the turntable
12
and is loaded onto the turntable
12
. At this time, the conveying roller
22
displaces to a position away from the disk D due to a cam plate (not shown). As a result, the fixation of the playing unit base
11
(which had been fixed) is released, the playing unit base
11
is supported by the flexible member
5
and the information recorded on the disk D is read. That is to say, the disk D is placed into a playable state.
Disk Playing
The playing of the disk D, which is mounted in a stationary position on the turntable
12
, is initiated by the turntable
12
rotating. The information recorded on the disk D is read by the pickup
15
. At this time, the vibrations of the vehicle are absorbed by the flexible member
5
and such vibrations are prevented from being transmitted to the playing unit
3
.
Disk Ejection
When the playing of the disk D is finished, the ejection of the disk D is initiated when the disk D is gripped by the turntable
12
and the disk clamp
14
and the disk D is in a stationary position on the turntable
12
. The pressuring arm
13
rotates in a direction away from the turntable
12
and the conveying roller
22
which had been in a position removed from the disk D displaces back to a position adjacent to the disk D. The disk D is then gripped by the disk guiding section
21
and the conveying roller
22
. The disk D is conveyed to the disk insertion aperture and ejected outside the chassis by the rotations of the conveying roller
22
. At this time, the playing unit base
11
is fixed by a cam plate (not shown).
The structure and operation of the disk device for use in a vehicle was outlined above. However each component will now be explained in detail below.
FIG. 2
is a plan view showing the horizontal operation of the mechanism of loading the disk D onto a turntable (not shown in
FIG. 2
) and ejecting the disk from the turntable in a conventional disk device.
FIG. 3
is a lateral view of the right side of FIG.
2
. In FIG.
2
and
FIG. 3
,
31
is a lever open member which is supported in the chassis
2
by a rotation shaft
32
.
33
is a rocker arm which engages the long hole
33
a
with the pin
13
e
on the pressuring arm
13
. An impelling force is provided by the springs
34
which are provided on both components.
35
,
36
are a pair of lever stoppers one end of which is stacked and is pivotally supported by the shaft
37
which is provided on the pressuring arm
13
.
38
is a lever rod.
39
is a slider rack (lever trigger).
Circular arc shaped long holes
13
a
,
13
b
,
13
c
,
13
d
are formed on the pressuring arm
13
respectively on the left and right about the axis
37
. Pins
35
a
,
35
b
provided on the lever stopper
35
engage with long holes
13
a
,
13
b
, and pins
36
a
,
36
b
provided on the lever stopper
36
engage with long holes
13
c
,
13
d
. A lever rod
38
above is mounted on the pin
36
a
and the pin
36
b
engages with an indentation
38
a
.
40
is a spring which is mounted between the lever stoppers
35
,
36
so that they are compressed towards each other.
41
is a spring which compresses one end of the lever rod
38
so that the lever rod is normally pushed in an abutting direction to the slide rack
39
.
14
is a disk clamp which is mounted on the pressuring arm
13
so that it is positioned in the center of the chassis
2
.
The operation of the invention will now be explained.
FIG. 4
shows a large diameter (12 cm) as loaded in the disk device.
FIG. 5
shows the disk device immediately after the switching from the horizontal operation to the vertical operation due to the insertion of a disk D.
Firstly as shown in
FIG. 2
, when a disk D is inserted, the disk D is conveyed into the chassis
2
by a conveying roller (not shown). A pin
31
a
is pushed by the peripheral edge of the disk D during the conveying process, the lever open member
31
is rotated in a clockwise direction about the rotation shaft
32
, and the rocker arm
33
is displaced in the direction of the arrow a by the projection
31
b
on the tip of the rocker arm
33
.
Due to this displacement, since the engagement of the pin
35
b
with the engagement section
33
b
is released, the pins
35
a
,
35
b
displace along the long holes
13
a
,
13
b
and the pins
36
a
,
36
b
displace along the long holes
13
c
,
13
d
. This is because the pins
35
a
,
3
a
,
36
b
are pushed by the disk D due to the insertion of the disk D, as shown in FIG.
4
and FIG.
5
. Thus the lever stopper
35
,
36
rotates transversely about the axis
37
.
When the disk D progresses further into the device, passes the position shown in FIG.
6
and is inserted in

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