Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Reexamination Certificate
2001-02-12
2003-11-18
Davis, David (Department: 2652)
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
C369S030780
Reexamination Certificate
active
06650602
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a disk device. In particular, the present invention relates to a disk device adapted to operate a plurality of disks selectively without using a detachable magazine.
2. Description of Related Art
FIG. 104
is a schematic cross sectional view showing the main components of a general conventional disk device adapted to operate a plurality of disks selectively.
FIG. 105
is another schematic cross sectional view of main components.
In
FIGS. 104 and 105
, reference numeral
1
denotes a magazine loading interchangable disks and
2
is a disk drive section. The disk drive section
2
comprises a disk motor
3
, a disk clamp hub
13
provided on a shaft of the disk motor
3
, a disk clamp
4
, a disk roller
6
provided in the magazine
1
and transferring disks
8
transferred from the drive lever
5
driven by a drive means (not shown) to the disk drive section
2
, a drive shaft
9
fixed to a housing
7
which supports the disk drive section
2
, an inclined plate cam
10
which operates in direction A in the figure and being driven by the drive means, and a vertical guide plate
11
.
In the above disk device, when extracting (hereafter selecting) a plurality of disks
8
loaded in the magazine
1
, the drive shaft
9
, inclined plate cam
10
and vertical guide plate
11
are respectively displaced. The disk rotation drive section
2
is displaced in the direction B shown in the figure to determine the position of the desired disk in the magazine
1
.
Since the type of conventional disk device above arranges a disk loaded in the magazine
1
and a disk rotating near the disk drive section
2
in an orientation in which the disks are completely independent in a planar region, the problem of the length of the disk device arises. That is to say, the dimension D of the device is increased as a result.
A device as disclosed in JP-A-63-200354 for example has been proposed to solve problems such as the above.
FIGS. 106 and 107
are schematic cross sectional views of a lateral cross section of main components.
FIG. 108
is a schematic cross sectional view of an upper cross section of main components.
In
FIGS. 106
,
107
and
108
, reference numeral
19
denotes a magazine loading an interchangeable disk,
21
is a disk motor,
22
is a disk clamp hub disposed on a shaft of the disk motor, and
23
is a disk clamp.
26
is a disk roller which transfers a disk
25
, which is ejected by a drive lever
24
driven by a drive means (not shown), to a disk drive section and
27
is a subordinate roller which operates in an opposed direction to the disk roller
26
.
32
is a pair of inclined plate cams which engage with a plurality of trays
31
in the magazine
19
and which operate so that when a disk displaces in a lateral direction, a gap E at least having a thickness greater than or equal to the thickness of the disk is provided with respect to the disk drive section
20
in an axial rotation direction of a disk
25
which is selected by the magazine displacement means (not shown).
The disk rotation drive means
20
is comprised of a disk motor
21
, a disk clamp hub
22
, a disk clamp
23
, a drive lever
24
, a disk
25
, a disk roller
26
, a subordinate roller
27
, and an inclined plate cam
32
.
The operation of the conventional disk device will be described below.
When any one of a plurality of disks
25
which are loaded in a magazine
19
is selected, the magazine
19
is displaced in a direction F as shown by the arrow in the figure by a drive means and positioned at a desired disk position in the magazine
19
.
A drive lever
24
in the magazine
19
is operated, and the disk
25
slides the disk guide
35
in the magazine
19
. The leading edge of the disk
25
is gripped between the disk roller
26
of the disk drive section
20
and the subordinate roller
27
. After the disk is conveyed to a position of the disk clamp
23
and the disk clamp hub
22
which is provided on a shaft of the disk motor
21
, the clamp position of the disk
25
is confirmed by a disk detection means (not shown). The roller
27
on the subordinate side of the disk clamp
23
and the disk roller
26
is displaced in the direction of the disk clamp hub
22
by the drive means and the disk
25
is clamped.
At the same time as the subordinate roller
27
displaces in the direction of the disk clamp hub
22
, the pair of inclined plate cams
32
provided on the disk drive section
20
are displaced toward the magazine
19
by the drive means. A suitable gap E as shown in
FIG. 107
is formed by the inclination of the tray
31
.
Since a conventional disk device is comprised as shown above, the problem has arisen that disks can not be selectively inserted or retracted as required one at a time since a magazine case is required and that the size of the device is increased.
As a conventional disk device uses a conveyable magazine case, a complicated mechanism is required in order to separate each of the loading shelves loading disks in the disk device. When disks are played and a gap is formed between a played disk and an opposed disk, the gap may be enlarged as only one end can be opened. As a result, the problem has arisen that it becomes necessary to provide a space in the device which as a result, enlarges the size of the disk device to that degree.
As a result of the conventional disk device using a conveyable magazine case, it is extremely difficult to divide each loading shelf loading disks in the disk device by inclining each loading shelf.
In order to maintain a space in the disk device, the problem has arisen that the size of the device is increased.
Since the conventional disk device is constructed to retain a disk outer periphery when retaining a disk in the device, the problem arises that the number of components is increased when retaining sections must be provided which corresponds to disks with a plurality of differing diameters.
It has been proposed to solve the above problem by the provision of a retaining section with the functions of retaining a plurality of disks of differing diameters with a single retaining section. However when such a device is constructed in this way, since a retaining section which retains small diameter disk must be provided, the problem arises that the retaining section for small diameter disks abuts and damages the face of large diameter disks when such disks are also loaded.
SUMMARY OF THE INVENTION
The present invention is proposed to solve the above problems and has the object of providing a disk device with reduced dimensions which is adapted to store a plurality of disks without using a detachable magazine and to perform respective operations, that is to say, to selectively insert, eject and play each disk.
The present invention has the further object of providing a disk device with reduced space by the disposition of a disk loading position and disk playing position on the same rotational axis with respect to a disk insertion/ejection direction.
The present invention has the further object of providing a disk device which prevents damage to the face of a disk by supporting a section of the disk when a disk is inserted or ejected by a plurality of support sections.
The disk device of the present invention comprises a fixing means which is rotatable and has a rod shape. The fixing means is fixed loosely on an inner diameter of the disk. A support means is also provided which forms a support section supporting a section of the disk on a peripheral section of the fixing means. The present invention is adapted to displace the support means in a rotating axial direction of the fixing means.
By the above arrangement, since it is possible to support disks with a simple structure even when disks having a plurality of diameters are loaded, the number of components is reduced. Furthermore the size of the device is reduced as disks are retained at a position proximate to an inner diameter of the disk.
The disk device of the present invention comprises a fixing means which is ro
Adachi Ryoto
Ieda Masahiro
Matsuda Takashi
Nagami Tetsurou
Nakanishi Yasuyuki
Davis David
Mitsubishi Denki & Kabushiki Kaisha
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