JP3296124B2 - Disk unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a disc cartridge housing a disc-shaped SL Rokunakadachi body such as an optical disk or disc cassette, or to a disk apparatus using the disk half.

[0002]

2. Description of the Related Art A compact disk (hereinafter, referred to as CD) system, which is standardized as a red book, a yellow book and the like and records information on a disk having a diameter of 120 mm, is widely used mainly for music. In this CD system, one side of the disk is used and is mainly used for reproduction only. In addition, discs are often handled in a bare state, and from the viewpoint of good operability, a tray loading method in which the disc is mounted on a drawer-like tray coming out of a disc device is mainly used. However, on the other hand, there is a disk cartridge called a CD caddy capable of taking a disk in and out, and a front loading method for inserting this disk cartridge into the apparatus also exists.

On the other hand, the CD system has a capacity sufficient to handle music information, but when recording video information such as a CD-ROM, the capacity of the CD system is insufficient due to an increase in the amount of information. Insufficiency and deterioration of image quality were inevitable. As a movement to cope with this, for example, a digital video disk (hereinafter, referred to as a DVD) system that is being standardized is cited. This D
In a VD system, the disc uses both sides and is used for recording and / or playback. In addition, from the viewpoint of ensuring the reliability associated with high-density recording, there is a tendency that the disk is basically stored in a dedicated cartridge and protected.

[0004] Furthermore, the above-mentioned C
There is also an announcement of a PD system that enables rewriting to the D system. In this PD system, the disc uses one side thereof and is used for recording and / or reproduction. Further, the disc is housed in a dedicated cartridge from the viewpoint of ensuring the reliability accompanying rewriting.

The disks used in the CD, DVD, and PD systems have the same dimensions of 120 mm in diameter, and the cartridges of the systems have substantially the same shape.
They have the same dimensions.

[0006]

As described above, the following problems arise when three similar disk cartridges are mixed.

1) Discrimination of a disk cartridge of each system.

2) Prevention of incorrect insertion The above-mentioned CD caddy is a single-sided recording and a disk clamper is attached to the case side of the caddy, whereas a new disk cartridge is a double-sided recording method. The configuration is on the device side.
Therefore, when the CD caddy is mounted on the disk device of the new disk cartridge, the two clampers interfere with each other. Therefore, it is necessary to prevent the CD caddy from being mounted on the disk device of the new disk cartridge. Also, the disc of the PD system is used on one side, and it is necessary to prevent the disc from being mounted on the non-use side.

3) The cartridge mounting method to the apparatus can be adapted to both the front loading method and the tray loading method.

An object of the present invention is to solve the above-mentioned problems and to provide a disk device suitable for discriminating between similar and different types.

[0011]

In order to solve the above-mentioned problems, the present invention has the following configuration. That is, the information is written on one side.
A first disk-shaped recording medium capable of recording and reproduction is stored therein,
A window for exposing the first disk-shaped recording medium is provided.
Recording and reproduction of information on both sides with first disc cartridge
And substantially the same shape as the first disk-shaped recording medium
A second disk-shaped recording medium having the same
Before providing a window for exposing the disk-shaped recording medium 2
The first disk cartridge has substantially the same shape and dimensions as the first disk cartridge.
Disk cartridge that can be used with
Disk device, wherein the first disk cartridge
Is a non-penetrating shape in a direction perpendicular to the disc-shaped recording medium.
A first parallel plane reducing section is provided, and the second
For the cartridge, it corresponds to the first parallel surface reduction part.
At a position perpendicular to the disk-shaped recording medium.
A continuous second parallel surface reducing portion is provided, and the first
Or to the mounting part where the second disk cartridge is mounted
Is a disk provided with a projection that fits into the first reduction portion.
Device.

[0012]

[0013]

[0014]

[0015]

According to the above construction, different kinds of disks having substantially the same diameter are used.
The cartridge can be determined. Also, the cartridge to the device
Front loading method,
And tray loading method.
You. The cartridge is turned upside down to support double-sided recording.
Even if it is inserted into the device, the discriminating means on the device side is a set,
It can be determined.

[0016]

[0017]

[0018]

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
5 will be described.

First, a first embodiment corresponding to the front loading method will be described.

FIG. 2 shows a disk cartridge of the present invention. (A) is a plan view partially broken away, (b),
(C), (d) is a side sectional view from below, right side, and above.

The basic structure of the disc cartridge 100 of the present invention includes a disc 1 for recording information, cases 2 and 3 for accommodating the disc, a shutter 4 for opening and closing windows 2a and 3a of the case, and a shutter 4. Two springs 40, 41 for urging, a door 5 opening a part of the case,
Consists of

The disc 1 can record and reproduce signals on both sides thereof.

The cases 2 and 3 are formed by being divided into two pieces and bonded together. Windows 2a and 3a are formed to expose a part of the disk surface so that information can be recorded and reproduced. Between the disk 1 and the springs 40 and 41, partition walls 2p and 3p for dust prevention are formed.

The shutter 4 is integrally formed in a U-shape with shutter surfaces 4a and 4b corresponding to both surfaces of the disk and a side surface portion 4c for integrally connecting the both surfaces. The projections 4p and 4q are engaged with a guide groove 2g formed linearly in the case, and are mounted so as to be linearly slidable in the left-right direction in the figure.

The two springs 40 and 41 are torsion coil springs, which are in a stretched state and urge so that the shutter surfaces 4a and 4b of the shutter 4 are held at positions for closing the windows 2a and 3a, respectively. ing. Also, the two springs have the same shape, so as not to increase the number of parts,
We are trying to reduce costs. And two cases 2, 3
And one in each of the two corner areas 50 and 51 sandwiching the shutter 4 from side to side. The tip of each spring arm is bent at a right angle to the axial direction of the winding of the coil portion, and each end 40a,
41a is engaged with the grooves 2d and 3d of the case corner. Further, the other ends 40b and 41b are engaged with stoppers 3p and 3q formed on the case 3 and having a V-shaped cross section, and the spring is in a stretched state as described above. It is positioned with high precision in the left and right direction. According to the present invention, the torsion coil spring has a configuration in which both ends are directly engaged with the case without any intervening other components, and does not increase the number of components. The deepest portions of the groove portions of the hook portions 4d and 4e formed integrally with the shutter 4 are aligned with the above-mentioned vertical and horizontal positions and shifted in height in the thickness direction of the disk. As a result, the shutter 4 moves left and right in the drawing,
That is, it is held at the center position shown in the sliding direction.

The sides of the cases 2 and 3 viewed from the direction shown in FIG. 2B are open, and the two springs can be inserted and assembled from one direction at a time with the two springs bent. Very easy to assemble.

The door 5 is rotatably engaged with the case 2 at 5a and 5b, and is opened so that a disk can be taken in and out as shown by dotted lines 5c and 1a. Here, since the door 5 has a surface that is parallel to the disk surface and is opened, the visibility of the disk when the door 5 is opened and the accessibility of the disk are good.

The door 5 is a commercially available 8 cm CD-RO.
A configuration in which the side surface of the case is opened like a cartridge for M may be used.

If the user does not want to take out a disk such as a rental disk, the door 5 need not be provided.

Next, the operation when the shutter opens and closes the window is shown in FIGS.

In FIG. 3, the disk cartridge 10
When 0 is inserted into the apparatus 200 (downward in the figure), it is supported by a shaft 202 fixed to the apparatus side, urged clockwise by a spring 203 in the figure, and abuts against a stopper 204. in sheet Yatta of the place that are waiting the opening lever 20
1 is the end 4r of the side surface of the shutter 4
Abut. When inserted further from this state,
The shutter opening lever 201 rotates counterclockwise in the figure,
Slide the shutter 4 to the left in the figure. When the slide is started, the right end 40b of the left spring 40 is pressed and engaged with the groove of the left hook 4d of the shutter as shown in FIG. 4, and is separated from the projection 3p of the case. On the other hand, the left end 41 of the right spring 41 in the drawing
b is released from the right hook 4e of the shutter while being pressed and engaged with the projection 3q of the case, and the right spring 4
1 is retained in its original form. And shutter 4
As a result, the right end 40b of the left spring 40 moves linearly and deforms in the corner region 50 as shown in FIG. Here, the side portion 4c of the shutter 4 has C
A discriminating hole 4s for the D caddy is provided, and a projection 210 is provided on the device 200 side corresponding to the discriminating hole 4s at a position where the disc cartridge 100 is inserted to the innermost position. Only when the protrusion 210 is fitted into the hole 4s, the disc cartridge 100
Can be inserted. Then, a sensor (not shown) detects that the disk cartridge 100 has been inserted up to the completion position, and thereafter, the entire disk cartridge 100 is moved in the direction of the rotation axis of the disk, and the disk is mounted in a recordable / reproducible manner.

Here, the CD caddy has the discrimination hole 4s.
There is no side portion 4 of the shutter 4 just before the insertion is completed.
c collides with the tip of the protrusion 210, and the insertion cannot be completed. As a result, the mounting of the CD caddy is prevented.

In the present invention, the disk cartridge 100 is symmetrical in the state shown in FIG. FIGS. 5 and 7 are side views showing the outer shapes of the cases 2 and 3 and the shutter 4. In FIG. 5, the discriminating hole 4s corresponds to FIG.
As shown in (a), the shutter 4 is formed at the center of the side surface 4c of the shutter 4 so as to be point-symmetrical. Therefore, when the disk cartridge 100 is inserted upside down, the recording / reproducing operation on the back surface is performed as shown in FIGS.
It is configured to operate in exactly the same manner as
The mechanism shown in FIG. 3 and FIG. 4 on the zero side can support both sides of the disk with only one set, and realizes a simplified configuration and low cost of the apparatus. In the present embodiment, the discriminating hole 4s has a rectangular shape, but may have a circular shape as shown in FIG. 5B. Also, as described above, the side portion 4c of the shutter 4
If it is point symmetric in the above, a plurality of holes may be used as shown in FIG. Also, as shown in FIG. 7, reducing portions 20a and 20b are provided on the front surface orthogonal to the insertion direction of the cases 2 and 3 so as to be point-symmetric with respect to the front surface orthogonal,
The projection 210a may be fitted in correspondence with this. Further, the reduction unit 20 only needs to be point-symmetric, and
(A) to (d).

In the outer dimensions of the case, the width dimension and / or the thickness dimension, which is the width dimension for insertion into the apparatus, may be smaller than the CD caddy as the cartridge to be prevented from being inserted.

When the disc is a single-sided recording, by forming only one of the reduction units 20a and 20b corresponding to the recording side, discrimination between double-sided recording and further recording Can be specified.

The combination of the reduced portion and the protruding portion using the above-mentioned shape means may include, for example, the following as long as the arrangement relationship is configured to be point-symmetrical on the front-edge-side orthogonal plane. All of the detection means can be replaced.

1) Combination of light emitting diode and light receiving element using optical means.

2) Combination of an MR sensor and a magnet using magnetic means.

3) Combination of an ultrasonic transmitter using acoustic means and its receiver.

4) Combination of a contact switch using electric means and a conductor.

When the disk cartridge 100 is removed from the apparatus 200, the operation is reversed.
2 to 4, the right end 40 of the left spring 40.
“b” returns to the state pressed by the protrusion 3p of the case 3.

Further, in this embodiment, the structure using the torsion coil spring as the urging means of the shutter means is different from that of the currently commercially available CD caddy in the case where the disc is not arranged in the case and in the case. A configuration in which one tension coil spring is arranged in an area occupied by the shutter means at the position where the window is closed may be employed.

Next, a second embodiment of the present invention will be described.

The second embodiment corresponds to a disk device of a tray loading system in addition to the front loading system in the first embodiment.

FIG. 8 shows a schematic outline of the disk cartridge, in which the inside and the shutter configuration are the same as those in the first embodiment, and the disk loading / unloading configuration is not adopted. The same parts as those in the first embodiment are denoted by the same reference numerals. As a means for discrimination and erroneous insertion prevention in the front loading method, reduction units 20a and 20b having the configuration shown in FIG. 7A are formed. In addition, as means for discriminating and erroneous insertion in the tray loading method, reducing portions 302a and 302b which open a surface parallel to the disk surface of the disk cartridge 100 from both sides and penetrate in the thickness direction thereof are provided as the reducing portions. 20a, 2
0b and are provided symmetrically on both sides corresponding to 0b. Figure 1
Then, as an example, the reduction units 20a and 20b
Intersects with the reduced portions 302a and 302b penetrating in the thickness direction.
It is provided in such a manner.

FIGS. 9 and 10 show the structure of the disk cartridge for the CD caddy and PD system corresponding to FIG.

In FIG. 9, the CD caddy does not have a reduction portion that opens a surface parallel to the disk surface.
On the other hand, in FIG. 10, the PD system disk cartridge is provided with reduction units 302a and 302b each having an opening on one side of a surface parallel to the disk surface of the disk cartridge 100, corresponding to the recording surface side of the single-sided recording disk. ing.

The structure when these disk cartridges are mounted on a disk device will be described with reference to FIG. 1 and FIGS.

In FIG. 1, reference numeral 200 denotes a disk device,
Reference numeral 51 denotes the tray, and reference numeral 250 denotes a pull-in command button for giving a command to start the tray pull-in operation. Tray 25
In FIG. 1, two projecting portions 252a and 252b are formed symmetrically at positions and shapes corresponding to the reducing portions 302a and 302b.

FIGS. 11A and 11B show the configuration when the disk cartridge of the present invention is mounted on a disk device. FIG. 11A is a plan view, and FIG. 11B is a side sectional view. In FIG. 9A, the two protruding portions 252a and 252b provided on the tray 251 are provided with the reducing portions 302a and 30 provided on the disc cartridge 100, respectively.
2b is fitted in both the position and the shape, and is lowered to the lowermost portion of the tray 251 as shown in FIG. Then, in this state, the retract command button 2
The front of 50 is opened so that the button can be pressed. The disc of the present invention uses both sides of the disc. As described above, the protruding portions 252a and 252b provided on the tray 251 and the reducing portions 302a and 30b provided on the disc cartridge 100 as described above.
2b are provided symmetrically with each other, and the reduction units 302a and 302b
The opening parallel to the disk surface is opened from both sides and penetrated in the thickness direction. Therefore, when the disk cartridge 100 is turned over and the reverse surface is used, the mounting is completed in the same manner as in FIG. can do.

Next, the structure when the PD system disk cartridge is mounted will be described with reference to FIGS.

The PD system disk uses only one side of the disk. FIG. 12 shows a configuration when the disk cartridge is correctly mounted on the disk device with respect to the side to be used. ) Is a plan view, (b)
Is a side sectional view thereof. In FIG.
51, the two protrusions 252a, 252b
Are fitted in the positions, shapes and heights (depths) of the reduction portions 302a and 302b provided on the disk cartridge 100, respectively, and are lowered to the lowermost portion of the tray 251 as shown in FIG. Then, the mounting can be completed. Then, in this state, the front of the retraction command button 250 is opened, and the button can be pressed.

On the other hand, FIGS. 13A and 13B show the configuration when the disk cartridge is mounted in the disk device in the opposite direction to the surface to be used, and FIG. 13A is a plan view, and FIG.
Is a side sectional view thereof. In FIG.
51, the two protrusions 252a, 252b
Cannot be fitted to the reduction portions 302a and 302b provided in the disk cartridge 100, and the upper portion cannot be lowered to the lowermost portion of the tray 251 as shown in FIG. Installation cannot be completed.
In this state, the retraction command button 250
Is retracted by the disc cartridge 100, and the retract command button 250 is arranged so that the button cannot be pressed.

As described above, 1) the disk cartridge 100 cannot be properly mounted.

2) At this time, the disk cartridge 100
The inclination is configured so that abnormalities can be easily recognized.

3) The retraction command button 250 cannot be pressed.

Thus, the erroneous insertion is reliably notified to the operator and can be avoided.

The discriminating means is provided on the leading side of the disc cartridge 100 in the direction of insertion into the disc device 200. 1) The side near the entrance side of the device is lifted and displaced from the entrance, It is easy to understand that the cartridge 100 does not enter.

2) Often provided at similar positions,
It is easy to double as a gripper for holding the disk cartridge 100.

The following effects can also be obtained.

In the corner area of the disk cartridge 100 where the disk is not located, the shutter 4
The two corner areas 50 and 51 which are originally difficult to utilize because they are blocked by the movement of
Furthermore, since the discriminating means for both front loading and tray loading is provided, the remaining two corner areas can be opened, and for example, the reference hole, the disc loading / unloading mechanism and the like can be effectively and sufficiently provided. The effect that can be utilized is also obtained.

Further, since the discriminating means for front loading extends only to the front of the center of the disc, the effect of reducing the size of the disc cartridge can be obtained without increasing the width of the disc cartridge.

FIG. 14 shows a configuration in which a CD caddy which should not be mounted as described above is erroneously mounted on a disk drive, wherein (a) is a plan view,
(B) is a side sectional view thereof. 1A, the two protrusions 252a and 252b provided on the tray 251 cannot be fitted to the disk cartridge 100 in either case.
As in the case of No. 3, the mounting cannot be completed, and the retraction command button 250 cannot be pressed. And erroneous insertion can be avoided reliably.

It is needless to say that all of the above three types of discs are configured so as to prevent erroneous insertion even when the disc cartridge is to be mounted in a state rotated by 90 or 180 degrees. .

Finally, FIG. 15 shows the specific outline dimensions of the disk cartridge of the present invention. 14A is a plan view thereof, and FIG. 14B is a side view thereof.
Is a reference hole.

[0067]

According to the present invention, it is possible to obtain the effect of reliably discriminating different kinds of disk cartridges having substantially the same shape.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk device and a disk cartridge of the present invention.

FIG. 2 is a plan view and a side view showing a disk cartridge used in the present invention.

FIG. 3 is a plan view showing a state where the disk cartridge used in the present invention has been inserted into the apparatus.

FIG. 4 is a plan view showing a state where the disk cartridge used in the present invention has been completely inserted into the apparatus.

FIG. 5 is a plan view showing a configuration of a discriminating hole provided in a shutter of the disk cartridge used in the present invention.

FIG. 6 is a plan view showing a configuration of a reduction unit provided in a case of the disk cartridge used in the present invention.

FIG. 7 is a plan view showing an alternative to the configuration of the reduction unit provided in the case of the disk cartridge used in the present invention.

FIG. 8 is a perspective view showing a disk cartridge of the present invention.

FIG. 9 is a perspective view showing a CD caddy.

FIG. 10 is a perspective view showing a disk cartridge of the PD system.

FIG. 11 shows a disk cartridge used in the present invention and
FIG. 2 is a plan view and a side view showing the disk device of the present invention .

FIG. 12 is a plan view and a side view showing a disk cartridge of the PD system and the disk device of the present invention.

FIG. 13 is a plan view and a side view showing a disk cartridge of the PD system and the disk device of the present invention.

FIG. 14 is a plan view and a side view showing a CD caddy and the disk device of the present invention.

FIG. 15 is a plan view and a side view showing the external dimensions of the disk cartridge of the present invention.

Claims (2)

(57) [Claims] 1. A first disk cartridge containing a first disk-shaped recording medium capable of recording and reproducing information on one side thereof and having a window for exposing the first disk-shaped recording medium; A window for storing a second disk-shaped recording medium capable of recording and reproducing information and having substantially the same shape and dimensions as the first disk-shaped recording medium, and exposing the second disk-shaped recording medium And a second disk cartridge having substantially the same shape and the same size as the first disk cartridge, wherein the first disk cartridge has the disk-shaped recording medium. A non-penetrating first parallel surface reducing portion is provided in a direction perpendicular to the medium, and the second disk cartridge has the disk-shaped recording medium at a position corresponding to the first parallel surface reducing portion. Hanging on medium A second parallel surface reducing portion penetrating in a predetermined direction, and a mounting portion for mounting the first or second disk cartridge is provided with a protruding portion that fits into the first parallel surface reducing portion. A disk device comprising: 2. A first disk cartridge containing a first disk-shaped recording medium capable of recording and reproducing information on one side, and a window for exposing the first disk-shaped recording medium, and both sides. A window for storing a second disk-shaped recording medium capable of recording and reproducing information and having substantially the same shape and dimensions as the first disk-shaped recording medium, and exposing the second disk-shaped recording medium And a second disk cartridge having substantially the same shape and the same size as the first disk cartridge, wherein the first disk cartridge has the disk-shaped recording medium. A first parallel surface reducing portion that is non-penetrating in a direction perpendicular to the medium, and a first orthogonal surface reducing portion provided at one end of a front edge side orthogonal surface in the direction of insertion into the disk device; 2 disk cartridge A second parallel surface reducing portion penetrating in a direction perpendicular to the disk-shaped recording medium at a position corresponding to the first parallel surface reducing portion, and a front edge side orthogonal to a direction of insertion into the disk device. A second orthogonal surface reduction portion is provided at both ends of the surface, and a mounting portion for mounting the first or second disk cartridge has a first fitting portion fitted to the first parallel surface reduction portion. A disk device provided with a projection or a second projection fitted to the first orthogonal surface reducing portion.