JP2970070B2 - Disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge (hereinafter, referred to as "cartridge") used for loading a disk into an optical disk device for recording, reproducing, and erasing.

[0002]

2. Description of the Related Art Conventionally, optical disk devices are often used exclusively for reproduction of CDs, laser disks, and the like. In recent years, recordable / reproducible optical disks using magneto-optical disks and phase change type disks have been developed.

[0003] In a recordable optical disk device, if dust or fingerprints adhere to the optical disk, the recording cannot be performed correctly. Therefore, the optical disk device is loaded into a cartridge for protecting the optical disk and loaded onto the optical disk device.

Hereinafter, an example of the above-described cartridge will be described with reference to the drawings. FIG. 11 is a plan view of the conventional optical disk cartridge when the opening / closing means is closed, and FIG. 12 is a plan view of the conventional optical disk cartridge when the opening / closing means is opened.

In FIGS. 11 and 12, 1 is a cartridge, 1a is a housing of the cartridge, 1b is an access opening for an optical head to access the optical disk 6, and 1c is a clamp for inserting a clamper (not shown) for fixing the optical disk to the turntable. An opening, 1d is a boss for applying the spring 3, 1e is a wall on which the engaging member 5 slides, and 1f is a recess, on which the opening / closing means 2 slides on the housing 1a. Reference numeral 2 denotes an opening / closing means which prevents dust from entering from the access opening 1b and the clamp opening 1c and is slidably movable on the recessed portion 1f of the housing. Reference numeral 2a denotes a cut-and-raised portion for applying a spring 3 to the opening / closing means 2. A spring for biasing the opening / closing means 2 in one direction, and 4 is a housing 1a
A holding plate 5 for holding the locking member 5 so as not to come off is an engagement member having one end connected to the opening / closing means 2 and an engagement portion 5a formed at the other end, and 6 is an optical disk.

The operation of the conventional cartridge constructed as described above will be described below.

In FIG. 11, a spring 3 has a housing 1a.
The opening / closing means 2 is normally urged rightward and stops at the step at the right end of the concave portion 1f, closing the access opening 1b and the clamp opening 1c. .

Next, as shown in FIG.
When is loaded into the optical disk device, the engaging portion 5a of the engaging member 5 is engaged with the engaging portion (not shown) on the optical disk device side.
And slides on the wall 1e in the direction opposite to the biasing direction of the spring 3, and the opening / closing means 2 moves to open the access opening 1b and the clamp opening 1c.

Next, a turntable and a clamper (not shown) of the optical disk device clamp the optical disk 6 through the clamp opening 1c, and read a signal on the optical disk with an optical head (not shown) through the access opening 1b. Can be.

[0010]

However, in the above configuration, when the cartridge is loaded on the optical disk device, the opening / closing means of the cartridge is always open. If the cartridge is left for a long time, the cartridge enters through the access opening 1b. Dust adheres to the optical disk, and the beam is not correctly connected to the optical disk.
There was a problem that the data could not be erased.

The present invention solves the above-mentioned conventional problem. When the cartridge is loaded, the access opening is closed to prevent dust from entering, except when recording, reproducing, or erasing. It is an object of the present invention to provide a cartridge that can prevent adhesion.

[0012]

In order to achieve this object, the present invention provides a housing for holding an optical disk, and an access opening provided in the housing for an optical head for recording and / or reproducing data on and from the optical disk. And a clamp opening provided in the housing for clamping the optical disc, and a predetermined sliding range in the housing.
The access opening and the clamp opening are configured to be opened and closed by one member that is mounted to slide within the enclosure.
Opening and closing means, wherein the opening and closing means
When at the one end position, the access opening and the
Pump opening both open, and the other end position
In some cases, the access opening and the clamp opening
Both are closed, and the one end point and the other end point
When in the approximate middle position, close only the access opening
It is characterized by

[0013]

Further, according to the present invention, there is provided a housing for holding an optical disk and an optical head for recording and / or writing data on the optical disk.
Or, an access opening provided in the housing for performing reproduction, a clamp opening provided in the housing for clamping the optical disc, and attached to the housing so as to slide within a predetermined sliding range. Having opening / closing means constituted by one member for opening / closing the access opening and the clamp opening, wherein the opening / closing means comprises:
When at the one end position of the sliding range, the access is open.
The mouth and the clamp opening are both open,
At the other end, the access opening and the
Make sure that the lamp openings are both closed, and
When the access point is at a substantially intermediate position between the other end points,
It is characterized in that part of the opening is closed and the clamp opening is opened.
Sign.

[0015]

[0016]

According to the present invention, when the cartridge is mounted on the optical disk apparatus, the opening / closing means slides, the access opening is closed, and the clamp opening is opened, so that the optical disk is loaded. When the recording / reproducing / erasing operation starts, the access opening is opened to enter the third state, and the optical head performs the above operation through the access opening. After the operation is completed, the opening / closing means is returned to the original position to close the access opening.

Further, according to the present invention, when the cartridge is mounted on the optical disk device, the opening / closing means slides to the second position.
Part of the access opening and the clamp opening
The state is reached and the optical disk is loaded. access
Position the optical head where the opening is open and wait
To Opening / closing means when starting recording / reproducing / erasing operations
Slides to the third position and fully opens the access opening
The above operation is performed through the access opening. Also works
After closing, close the access opening by returning the opening and closing means
I will.

[0018]

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a state in which the opening / closing means is closed in the cartridge according to the first embodiment of the present invention. FIG. 2 is a plan view showing a state in which the opening / closing means has opened the clamp opening in this embodiment. FIG. 3 is a plan view showing a state where the opening / closing means opens the access opening in the present embodiment.

In FIGS. 1, 2 and 3, 1, 1a, 1
b, 1c, 1d, 1e, 1f, 3, 4, 5, 5a, and 6 are the same as the constituent element names of the conventional example. Reference numeral 7 denotes an opening / closing means having a notch 7b having a side larger than the diameter A of the clamp opening 1c.

The operation of the thus constructed cartridge of this embodiment will be described below.

In FIG. 1, a spring 3 is hung on a boss 1d of a housing 1a and a cut-and-raised portion 7a of an opening / closing means 7.
The opening / closing means 7 is biased in one direction, and the access opening 1b and the clamp opening 1c are closed at the step of the end of the concave portion 1f.

Next, when the cartridge of this embodiment is loaded on the optical disk device, the engaging portion 5a of the engaging member 5 engages with the engaging portion (not shown) on the optical disk device side, and is opposite to the biasing direction of the spring 3. Pushing in the direction (arrow C) causes the opening / closing means 7 to move as shown in FIG. The opening / closing means 7 is the clamp opening 1
Since the notches 7b of the sides B1 and B2 larger than the diameter A of c are formed, only the clamp opening 1c is opened while the access opening 1b is closed, and the optical disk 6 is placed on a turntable (not shown) of the optical disk device. Is placed.

Next, when recording a signal on the optical disk 6 or erasing / reproducing the recorded signal, as shown in FIG. 3, the engaging portion 5a is further pushed in the direction C, the opening / closing means 7 moves, and the access opening 1b is opened. Is opened.

After the recording / reproducing / erasing operation is completed, the opening / closing means 7 is moved to the state shown in FIG. 2 to close the access opening 1b.

As described above, according to the present embodiment, when the optical disk loaded in the cartridge 1 is placed on the turntable of the optical disk device, the access opening 1b of the cartridge is closed, and the recording / reproducing / erasing operation is performed. By moving the opening / closing means 7 to open the access opening 1b when performing the operation, and closing the access opening 1b again after the above operation, the access opening can be opened even when the cartridge is inserted into the optical disk device for a long time. Since it is closed, dust can be prevented from adhering to the optical disc.

In this embodiment, the notch is formed as the opening and closing means, but a hole may be formed as the opening and closing means instead of the notch.

Hereinafter, a reference example of the present invention will be described with reference to the drawings. Figure 4 is a plan view showing a state in which the switching means is closed in the cartridge in the present embodiment, FIG. 5 is a plan view showing a state where the opening and closing means opens the clamp opening in this reference example, FIG. 6 in the present reference example It is a top view showing the state where opening and closing means opened an access opening.

In FIGS. 4, 5 and 6, 1, 1a, 1
b, 1c, 1e, 1f, and 6 are the same as the component names of the first embodiment. 1g is a boss on which a spring 12 is applied, 1h is a wall on which the engaging member 11 slides, 8 is an access opening 1
b, opening / closing means capable of closing both of the clamp openings 1c, 8a is a cut-and-raised portion for applying the spring 13 to the opening / closing means 8, 9 is opening / closing means capable of closing only the access opening 1b, and 9a is opening / closing means for the spring 13 9 is an engagement member having one end connected to the opening / closing means 8 and the other end formed with an engaging part 10a;
An engagement member having an engagement portion 11a formed at the other end thereof,
Reference numeral 12 denotes a boss formed on the housing 1 at one end and a spring applied to a part of the engagement member 10 at the other end. Reference numeral 13 denotes one end of the cut-and-raised portion 8a of the opening / closing means 8 and the other end thereof.
A reference numeral 14 denotes a holding plate for holding the opening / closing means 9 so as not to come off from the housing 1a, and 15 denotes a holding plate for holding the opening / closing means 8 so as not to come off from the housing 1a.

The operation of the thus constructed cartridge of the present embodiment will be described below.

In FIG. 4, the opening / closing means 8 and the opening / closing means 9 are connected with a constant force by a spring 13, and the opening / closing means 8 is connected to a spring 12 applied to an engaging portion 10a of an engaging member 10.
The access opening 1b and the clamp opening 1c are closed.

Next, when loading the cartridge of the present embodiment into the optical disk apparatus, the engaging portion 10 of the engaging member 10 is used.
a engages with an engaging portion (not shown) on the optical disk device side and is pushed in a direction opposite to the biasing direction of the spring 12, and the opening / closing means 8 and the opening / closing means 9 move simultaneously as shown in FIG. In the opening / closing means 9, the width is B3 larger than the diameter A of the clamp opening 1c, and the length is configured so as not to cover the clamp opening 1c. Therefore, only the clamp opening 1c is kept with the access opening 1b closed. The optical disk 6 is opened and the optical disk 6 is placed on a turntable (not shown) of the optical disk device.

Next, when recording a signal on the optical disk 6 or erasing / reproducing the recorded signal, the engaging portion 11a is moved in the direction E while the engaging portion 10a is fixed in FIG. At this time, the opening / closing means 8 does not move because the engaging portion 10a is fixed, and only the opening / closing means 9 moves, and the access opening 1b is opened as shown in FIG.

After the recording / reproducing / erasing operation is completed, the engaging portion 11a is moved to the state shown in FIG.

As described above, according to this embodiment, when the optical disk loaded in the housing 1a is placed on the turntable of the optical disk device, the access opening 1b is closed by the opening / closing means 9 to perform recording / reproduction / erasing. When performing the operation, the opening / closing means 9 is moved to open the access opening 1b,
By closing the access opening 1b again after the above operation, the opening / closing means can be closed even when the cartridge is inserted into the optical disk device for a long time, so that dust is prevented from adhering to the optical disk. it can. In addition, according to the present embodiment , the moving distance of the opening / closing means only has to secure a distance in which one of the two opening / closing means can move.

Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a plan view showing a state where the opening / closing means is closed in the cartridge according to the present embodiment . FIG. 5 is a plan view showing a state where the opening / closing means opens a part of the clamp opening and the access opening in the present embodiment. FIG. 6 is a plan view showing a state where the access opening is opened by the opening / closing means in this embodiment.

In FIGS. 7, 8 and 9, 1, 1a, 1
b, 1c, 1d, 1e, 1f, 3, 4, 5, 5a, and 6 are the same as the component names of the first embodiment.

7, 8, and 9, reference numeral 16 denotes a width B4 larger than the diameter A of the clamp opening 1c in the moving direction of the opening / closing means, and a part of the access opening 1b in a direction perpendicular to the moving direction. This is an opening / closing means having a cutout portion 16b of a size that opens.

The operation of the thus constructed cartridge of this embodiment will be described below.

In FIG. 7, the spring 3 is hung on the boss 1d of the housing 1a and the cut-and-raised portion 16a of the opening / closing means 16, the opening / closing means 16 is urged in one direction, and the access opening 1b and the clamp opening 1c are closed. Have been.

Next, when the cartridge of this embodiment is loaded on the optical disk device, the engaging portion 5a of the engaging member 5 is used.
Is engaged with an engaging portion (not shown) on the optical disk device side and the spring 3
8, the opening / closing means 16 moves as shown in FIG. The opening / closing means 16 has a clamp opening 1c and a part of the access opening 1b opened, and the optical disk 6 is placed on a turntable (not shown) of the optical disk device.

Next, when recording a signal on the optical disk 6 or erasing / reproducing the recorded signal, the engaging portion 5a is further pushed in the direction of the arrow F as shown in FIG. As shown, the access opening 1b is fully opened.

After the recording / reproducing / erasing operation is completed, the opening / closing means 16 is moved to the state shown in FIG. 8 to close the access opening 1b.

In the state shown in FIG. 8, since the access opening 1b is partially open, the optical disk 6 is rotated, and the optical head can be put into focus servo to be in a standby state.

As described above, according to the present embodiment, in the state shown in FIG. 8, since the access opening 1b is partially open, the optical disk 6 can be rotated and the optical head can be on standby with focus servo applied. Quickly move to recording / playback / erasing operations.

Further, since the access opening 1b opened in FIG. 8 can be made small and the open portion is covered with the optical head, even if the cartridge is inserted into the optical disk apparatus for a long time, the access opening 1b can be removed from the access opening. The amount of invading dust can be reduced.

The present embodiment is applied to the above-mentioned reference example , and a notch 9b is provided in the opening / closing means 9 as shown in FIG.
By opening a part of the access opening 1b, the optical head can be on standby with focus servo applied, and the same effect as described above can be obtained.

[0049]

As described above, according to the present invention, the access opening and the clamp opening of the cartridge are selectively provided.
The opening / closing means is constituted by one member so that the access opening can be opened and closed, and the access opening is closed in a standby state where the optical disc is placed on the turntable, and the access opening is opened during recording / reproducing / erasing operations. In the standby state, the access opening can be closed, and even if the cartridge is in the standby state for a long time in the optical disk apparatus, dust can be prevented from entering from the access opening and adhering to the optical disk.

Further , the minimum access opening is opened by the opening / closing means , and the optical head is formed with the opened access opening.
Recording / reproducing while in standby mode with cas servo
・ When starting the erase operation, fully open the access
And quick operation is possible. Ma
Also, since the opening / closing means is composed of one member, the cartridge
It has a feature that does not increase the cost of the cartridge, and its practical effect is very large.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of the present invention when a cartridge opening / closing unit is closed.

FIG. 2 is a plan view when only a clamp opening of the cartridge according to the first embodiment is opened.

FIG. 3 is a plan view when the clamp opening and the access opening of the cartridge according to the first embodiment are opened.

FIG. 4 is a plan view of the reference example of the present invention when the cartridge opening / closing means is closed.

FIG. 5 is a plan view of the reference example when only the clamp opening of the cartridge is opened.

FIG. 6 is a plan view of the reference example when the clamp opening and the access opening of the cartridge are opened.

FIG. 7 is a plan view of the second embodiment of the present invention when the cartridge opening / closing means is closed.

FIG. 8 is a plan view when only the clamp opening of the cartridge according to the second embodiment is opened.

FIG. 9 is a plan view of the cartridge according to the second embodiment when the clamp opening and the access opening are opened.

FIG. 10 is a plan view when a part of the access opening and the clamp opening of the cartridge according to the second embodiment are opened.

FIG. 11 is a plan view of a conventional cartridge.

FIG. 12 is a plan view showing a state in which a conventional cartridge opening / closing means is opened.

Claims (2)

(57) [Claims] A housing for holding an optical disk; an access opening provided in the housing for an optical head to perform recording and / or reproduction on the optical disk;
A clamp opening provided in said housing for clamping the optical disc, a predetermined sliding in said housing
An opening / closing means which is attached so as to slide within the range, and is configured by one member for opening / closing the access opening and the clamp opening; and wherein the opening / closing means is located at one end position of the sliding range. One day
Indicates that both the access opening and the clamp opening are open.
When it is at the other end,
And the clamp opening is closed.
And if it is located at a substantially intermediate position between the one end point and the other end point.
And closing only the access opening.
Disk cartridge that. 2. A housing for holding an optical disk, an access opening provided in the housing for an optical head to perform recording and / or reproduction on the optical disk,
A clamp opening provided in said housing for clamping the optical disc, a predetermined sliding in said housing
An opening / closing means which is attached so as to slide within the range, and is configured by one member for opening / closing the access opening and the clamp opening; and wherein the opening / closing means is located at one end position of the sliding range. One day
Indicates that both the access opening and the clamp opening are open.
When it is at the other end,
And the clamp opening is closed.
And if it is located at a substantially intermediate position between the one end point and the other end point.
Close the access opening and close the clamp.
A disk cartridge having an opening .