JPH0654581B2 - Optical disk device - Google Patents

Description

The present invention relates to an optical disc device, and more particularly to an optical disc device characterized by a shutter that rotates when a disc cartridge is inserted.

[Prior Art] Usually, in this type of optical disk device, a shutter is provided at the disk cartridge insertion port on the front surface of the device to prevent dust inside the device. Further, it is necessary to lock the shutter in order to prevent an erroneous operation by an operator that interferes with the recording / reproducing process during recording / reproducing of the medium, for example, double insertion of a disk cartridge. This shutter locking mechanism can be configured by using a drive source such as a solenoid when the circuit has a margin, but in many cases, it does not have a special drive source. The inserted disc cartridge is held by the loader, and the medium of the disc cartridge is set on the turntable from the position of the loader. It is driven by the motor to the load position. When the lock mechanism does not have a dedicated drive source, the shutter is locked by mechanically converting the movement of the loader.

[Problems to be Solved] In a conventional optical disc device provided with this type of lock mechanism, the lock mechanism adopts a method of forcibly closing the shutter, so that a finger injury or other injury accident may occur. In addition, there is a problem in that the lock mechanism operates when the foreign matter is caught in the shutter, which leads to a damage accident of the mechanism.

Therefore, the present invention is intended to improve the method of forcibly closing the shutter of the shutter lock mechanism having no dedicated drive source in the conventional optical disk device.

[Means for Solving Problems] The present invention has been made to solve the above-mentioned conventional problems, and as a means for solving the problems, the present invention includes a shutter that rotates and opens according to an operation of inserting a disk cartridge, In an optical disk device including a loader that holds the disk cartridge and moves it to a position where recording and reproduction are possible, and a side frame that movably supports the loader, a state in which a cutout portion provided in the side frame is engaged. Is attached to one end of the movable plate in the vicinity of the shutter in a vertically movable state in association with the vertical movement of the loader, and the movable plate is linked with the downward movement of the movable plate. A shield member that moves within the rotation locus of the shutter to prevent the shutter from rotating, and one end of the shield plate attached to one end of the movable plate and the other end of the shield member. And a spring for urging the shielding member downward to position the shielding member within the rotation trajectory of the shutter.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an external view of an optical disk device which is an embodiment of the present invention. The broken line 1 indicates the exterior plate. In the figure, reference numeral 2 denotes a disk cartridge that accommodates an optical disk medium therein, and the disk cartridge 2 is loaded into the apparatus through a cartridge insertion port 10 provided on the front surface of the exterior plate 1. A shutter 9 is provided at the cartridge insertion port 10 for the purpose of dust prevention and the like. The shutter 9 is rotatable around a hinge when the disc cartridge 2 is inserted. A U-shaped side frame 4 is mounted on a base plate 3 in the apparatus. A guide hole 7 is formed in the side frame 4 to guide the roller 6 of the loader 5. The loader 5 has a box shape so that it can hold the disk cartridge 2, and rollers 6 are attached at four positions. FIG. 1 shows that the loader 5 is in the forward movement state, and the operator is in charge of the disc cartridge 2
Is pushed to a position where it is held by the loader 5. After that, the loader 5 holds the disc cartridge 2 and moves horizontally, initially in the guide hole 7 of the side frame 4 by a driving means (not shown), and vertically in the final stage.
At the end of the descending movement, the optical disk medium in the disk cartridge 2 is set on a turntable (not shown) and the recording / reproducing process becomes possible. On the other hand, a moving plate 8 is sandwiched between the loader 5 and the side frame 4. FIG. 2 shows the shape of the moving plate 8, the loader 5, and the side frame 4.
The engagement state of is shown.

The movable plate 8 is provided with an elongated hole 8c, and the roller 6 of the loader 5 is
The guide hole 7 of the side frame 4 is provided through the elongated hole 8c.
Be guided by. Also, the shutter side of the moving plate 8 is 9
The stopper portion 8a and the shielding base portion 8b which are bent by 0 °
There is. The stopper portion 8a is fitted in the cutout portion 4a of the side frame 4. With the above configuration, the moving plate 8 is stationary when the loader 5 moves horizontally, and moves up and down only when the loader 5 moves up and down.

FIG. 3 is a tilted view of the movable plate 8 near the shutter 9 from the direction A in FIG. The shield member 11 is composed of a shield portion 11a and a slide portion 11b. The slide portion 11b is provided with an ellipse, and the stud 12 also serves as a guide.
Since it is attached to the moving plate 8 by
It can move up and down independently. A downward force is applied to the shielding member 11 by a spring 13 having the other end applied to the moving plate 8, and the shielding member 11 is normally at the lowest position.

The operation of the lock mechanism of the optical disk device configured as described above will be described with reference to FIGS. In FIGS. 4 and 5, the loader 5 is at the forward position and is in the state of waiting for the insertion of the disk cartridge 2. At this time, the movable plate 8 is in the upper position, and therefore the shielding portion 11a of the shielding member installed in front of the movable plate 8 is above the center of rotation of the shutter 9.

Also, as can be seen from FIG. 4, the moving plate 8 and the stud 12
Etc. are outside the trajectory of the shutter 9. Therefore, in this state, there is nothing that restrains the rotation of the shutter 9 and the disc cartridge 2 can be freely taken in and out.

In FIG. 6, the loader 5 moves to the loading position, and the moving plate 8
Is in a lowered state. The purpose of locking the shutter 9 can be achieved by blocking the rotation of the shutter 9 by lowering the shutter portion 11a to a position far below the center of rotation of the shutter 9. If for some reason the shutter 9 remains open, the loader 5
Even if the moving plate 8 descends after reaching the loading position, the shielding member 1
Since 1 is mounted so that it can be moved up and down independently, the shutter 9 is contacted with the shielding portion 11a of the shielding member 11, and the relative position with respect to the moving plate 8 is displaced, so that no unreasonable force is applied to the mechanism. . Further, although the force for closing the shutter 9 is slightly increased, it does not force the shutter 9 to be closed, so that the injury accident can be prevented. Further, if the factor that also prevents the closing of the shutter 9 is removed and the shutter 9 is closed, the shielding member 11 is lowered and locked.

[Effects of the Invention] As described above, in the optical disk device of the present invention, a vertically movable shield member is provided in the vicinity of the shutter of the moving plate that moves up and down in response to the loader, and this shield member is moved downward by a spring. Since the bias is applied, a dedicated drive source is not required, and the shutter can be locked without forcibly closing the shutter. Therefore, there is a problem in the conventional shutter lock mechanism, that is, finger scissors or damage to the mechanism. The effect is that accidents can be prevented.

In addition, even if the moving plate moves up and down for some reason even when the shutter is open, the shielding member can move up and down independently by the spring, which makes it impossible for the mechanism to lock the shutter as much as the relative position to the moving plate shifts. The effect is that no strong force is applied.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG.
FIG. 3 is a perspective view showing a partial configuration of the figure, FIG. 3 is a perspective view seen from the direction A in FIG. 1, FIGS. 4 and 5 are plan views and side views showing the operation of the lock mechanism, and FIG. [Fig. 6] is a side view showing an operating state in the load position. 2: Disc cartridge 4: Side frame 5: Loader 8: Moving plate 9: Shutter 11: Shielding member 13: Spring

Claims (1)

[Claims] 1. A shutter that rotates and opens in response to an operation of inserting a disk cartridge, a loader that holds the disk cartridge and moves it to a position where recording and reproduction are possible, and a side frame that movably supports the loader. In the optical disc device provided with the movable plate, which moves vertically in conjunction with the vertical movement of the loader while being engaged with the cutout portion provided in the side frame, and one end of the movable plate near the shutter. A shield member that is attached in a vertically movable state and that moves in the rotation locus of the shutter in conjunction with the downward movement of the movable plate to prevent the shutter from rotating, and one end of which is attached to one end of the movable plate. A spring that attaches the other end to a side surface of the shielding member and urges the shielding member downward to position the shielding member within the rotation trajectory of the shutter. Optical disk apparatus characterized by comprising.