JPH0676445A - Front shutter mechanism of magneto-optical disk device - Google Patents

Abstract

PURPOSE:To obtain a front shutter mechanism of a magneto-optical device always capable of safely and smoothly blocking a disk cartridge port of a front bezel part without using an electrical driving means such as a motor, etc., independent of the existence of the magneto-optical disk device. CONSTITUTION:When the disk cartridge is inserted, the disk cartridge 18 is internally held by a cartridge holder 6 in the device and moved decending to the prescribed position according to a prescribed procedure. A secondary shutter 3 linked with the cartridge holder 6 is moved by a rack gear part 22 provided on the cartridge holder 6, leaf gears 19,20, a twist spring 21 and a rack gear part 23 provided on the secondary shutter part, then the disk cartridge port 2 of the front bezel part is blocked from the device inside. At this time, even when an obstacle 17 exists at the disk cartridge port 2 and comes into contact with the secondary shutter 13, the force is reserved by the twist spring 21, thereby the operation is safely and smoothly performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front shutter mechanism for opening and closing a disc cartridge insertion opening provided in a front bezel in a magneto-optical disc device.

[0002]

2. Description of the Related Art A front shutter mechanism of a conventional magneto-optical disk device is shown in FIGS.

The magneto-optical disk device has a front shutter mechanism for opening and closing a disk cartridge insertion opening of a front bezel portion provided for inserting and ejecting a disk cartridge.

In the conventional mechanism, as shown in FIG. 6, when a disc cartridge is not inserted, a shutter 3 rotatably supported by a support portion 4 provided on the front bezel 1 is provided at the disc cartridge insertion opening provided on the front bezel 1. 2 is blocked from the inside of the device.

As shown in FIG. 7, when the disc cartridge 18 is inserted, the shutter 3 is pushed open by the end portion of the disc cartridge 18 by pushing the disc cartridge 18 through the disc cartridge insertion port 2.

By pushing the disk cartridge 18 into the apparatus, the slide chassis 8 having the inclined guide groove 9 for supporting the cartridge holder 6 holding the disk cartridge 18 therein is moved.

The disk cartridge 18 is moved down to a predetermined position by a predetermined insertion operation.

The shutter 3 is a disk cartridge 1
While still in contact with the upper surface of 8, it is stopped at the position shown in the figure that is pushed open.

With the movement of the slide chassis 8, the secondary shutter 13 held by the slant guide groove 12 provided in the slide chassis 8 is pushed up,
The disk cartridge insertion port 2 is closed from the inside of the device.

When the disc cartridge is ejected from the inside of the apparatus, the cartridge holder 6 is returned to the position shown in FIG. 6 by reversing the inserting operation.

The disk cartridge 18 is pushed out from the disk cartridge insertion opening 2 to a position where the end portion projects from the front bezel 1 by a mechanism (not shown).

Then, by manually pulling out the disc cartridge 18, the shutter 3 is returned to the position shown in FIG. 6 to close the disc cartridge insertion port 2 and the discharging operation is completed.

[0013]

The magneto-optical disk device is required to be thin and small in size, the space inside the device is limited, and it is desirable that each mechanism can be made thinner and smaller.

Further, the magneto-optical disk device is required to have a high dustproof function for the device in view of the characteristics of the medium and the recording / reproducing system.

As described above, in the system in which the secondary shutter that closes the disc cartridge insertion port when the disc cartridge is inserted is moved by the inclined guide groove provided in the slide chassis, the disc cartridge is pushed into the disc cartridge insertion port. If other obstacles are present in the finger fork, there is a risk that the finger fork will be caught by the secondary shutter.

Further, when the obstacle is pinched by the secondary shutter, the inserting operation of the disk cartridge is stopped at that time.

If the object sandwiched by the secondary shutters is a finger or the like, there is a possibility of injury.

Further, even if the finger is in strong contact with the secondary shutter, discomfort for the operability of the device may occur.

The present invention has been made on the basis of the above background, and has a simple and compact structure which always closes the disk cartridge insertion opening provided in the front bezel regardless of the insertion or non-insertion of the disk cartridge. ,
An object of the present invention is to provide a front shutter mechanism of a magneto-optical disk device, which has a high dustproof function for the device and enables its operation to be performed safely and smoothly.

[0020]

SUMMARY OF THE INVENTION According to the present invention for solving the above-mentioned problems, a disk cartridge insertion opening provided in a front bezel is closed from the inside of the apparatus, and a shutter rotatably supported by the front bezel and a disk cartridge. A plate gear provided in a cartridge holder for internally holding the gear, a gear having a clutch action using a torsion spring,
A secondary shutter, which is supported via the plate gear and the gear and moves along the inside of the front bezel, is provided, and when a disc cartridge is inserted, a disc cartridge insertion opening provided in the front bezel is closed according to a predetermined insertion operation. Thus, the front shutter mechanism of the magneto-optical disk device is provided with means for always closing the disk cartridge insertion port regardless of whether the disk cartridge is inserted or not, and the operation is performed safely and smoothly.

[0021]

In the above structure, the shutter rotatably supported by the front bezel closes the disc cartridge insertion opening provided in the front bezel from the inside of the apparatus when the disc cartridge is not inserted.

When the disc cartridge is inserted, by pushing the disc cartridge through the disc cartridge insertion opening, the shutter is pushed open and the cartridge holder internally holding the disc cartridge is moved downward as the respective mechanical parts move by a predetermined inserting operation. The secondary shutter, which is supported via a gear having a clutch action using a plate gear and a torsion spring provided in the cartridge holder, moves upward along the inside of the front bezel.

When there is an obstacle at the disk cartridge insertion opening, the torsion spring causes a clutch action,
The upward movement force of the secondary shutter is suspended.

After the obstacle is removed from the disc cartridge insertion opening, the ascending movement operation of the secondary shutter is restored to close the disc cartridge insertion opening from the inside of the apparatus.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows the front shutter mechanism of the magneto-optical disk device when the disk cartridge is not inserted.

The shutter 3 which closes the disk cartridge insertion opening 2 provided in the front bezel 1 from the inside of the device is rotatably supported by the support portion 4 of the front bezel 1.

Further, the shutter 3 is provided with a torsion spring 5,
In the figure, a force is applied in the clockwise direction around the support portion 4.

When the disc cartridge is inserted, the disc cartridge 18 is held by the cartridge holder 6 in the apparatus.

The cartridge holder 6 has a slant guide groove 9 formed in the slide chassis 8 by a guide pin 7.
And the positioning guide groove 1 provided on the side chassis 10.
Supported by 1.

As shown in FIG. 2, the secondary shutter 13 is located below the disc cartridge insertion opening 2 inside the front bezel 1 of the apparatus.

The shutter 13 includes plate gears 19 and 20 that are rotatably supported about a support pin 14 provided on a side plate portion of the front bezel 1, and a rack gear portion 22 provided on the cartridge holder 6. A rack and pinion mechanism constituted by a rack gear portion 23 provided on the shutter 13 is supported so as to move up and down in conjunction with the cartridge holder 6.

The plate gears 19 and 20 and the torsion spring 21 are
As shown in FIG. 5, the torsion springs 21 are combined and interlocked so as to have a clutch action.

An eject switch 15 is interlocked with the slide chassis 8 by a mechanism not shown.

Next, the operation of the front shutter mechanism of the present invention will be described.

FIG. 4 shows a state of the front shutter mechanism of the present invention when the disc cartridge is inserted. When the disc cartridge is inserted, by pushing the disc cartridge 18 through the disc cartridge insertion port 2, the shutter 3 is pushed open by the end portion of the disc cartridge.

When the disc cartridge 18 is pushed into the apparatus, the position fixing mechanism (not shown) is released, and the slide chassis 8 is moved leftward from the position shown in FIG. 1 by the spring (not shown).

With this movement, the cartridge holder 6 holding the disk cartridge 18 in the apparatus.
Moves down by the guide pin 7, the slanted guide groove 9 and the positioning guide groove 11 to move the disc cartridge 18 to a predetermined position.

The plate gear 20 corresponds to the cartridge holder 6
The rack gear portion 22 moves to the right as shown in FIG.

Since the one end of the torsion spring 21 is pushed up by the plate gear 20 rotating to the right, a force in the right rotating direction is applied to the plate gear 19 by the reaction force of the spring, and the plate gear 19 also moves to the right in the drawing. To do.

The secondary shutter 13 is pushed up to the position shown in the drawing by the rack gear portion 23 when the plate gear 19 rotates rightward to close the disc cartridge insertion opening 2 from the inside of the apparatus.

At this time, as shown in FIG. 3, when the finger fork pushing the disc cartridge into the disc cartridge insertion slot 2 has other obstacles 17, the pushed secondary shutter 13 comes into contact with the position. To stand still.

The force to push up the shutter 13 is the plate gear 1
After the obstacle is removed from the disc cartridge insertion opening 2 by the clutch action of the torsion spring 21 interlocking 9 and 20, the secondary shutter 13 continues the moving operation and continues the movement. Block 2 from the inside of the device.

Further, the shutter 3 stands still at the position shown in FIG. 4 while being in contact with the upper surface of the disc cartridge 18.

The eject switch 15 which is interlocked with the slide chassis 8 projects from the front bezel 1 to the position shown in the drawing as the slide chassis 8 moves.

When the disc cartridge is ejected from the inside of the apparatus, the slide chassis 8 is moved to the right in the figure by pushing in the eject switch 15 protruding from the front bezel 1.

By moving the slide chassis 8 to the position shown in FIG. 1 and reversing the inserting operation, the cartridge holder 6 is returned to the position shown in FIG.

The shutter 13 is pushed up by the plate gear 19 as the cartridge holder moves, and
Move to the position shown.

The disc cartridge 18 is pushed out from the disc cartridge insertion opening 2 to a position where a part of the front bezel 1 is projected by a spring force of a mechanism portion (not shown) or the like.

Then, by manually pulling out the disc cartridge 18, the shutter 3 returns to the position shown in FIG. 1 to close the disc cartridge insertion port 2 and the ejection operation is completed.

[0051]

Since the present invention is configured as described above, it has the following effects. (1) In addition to the conventional shutter that is rotatably supported by the front bezel, a rack and pinion having a clutch action using a plate gear and a spring along with the movement of a mechanical component that holds the disc cartridge when the disc cartridge is inserted Since the disk cartridge insertion port is closed by the secondary shutter that moves via the gear mechanism, the disk cartridge insertion port of the magneto-optical disk device, which has been difficult in the past, is replaced by an electric drive means such as a motor. Instead, it can always be closed automatically. (2) When the disc cartridge is inserted, even if an obstacle such as a finger is present in the disc cartridge insertion opening and the secondary shutter comes into contact, the force can be released by the above configuration, so the above operation is achieved safely and smoothly. It became possible to do. (3) With the above configuration, the number of parts can be reduced and space can be saved.

[Brief description of drawings]

FIG. 1 is a side view of a front shutter mechanism of a magneto-optical disk device showing an embodiment of the present invention.

FIG. 2 is a detailed view of a C portion of FIG.

FIG. 3 is a detailed view of portion C in FIG. 1 in a state where the disc cartridge is inserted.

FIG. 4 is a detailed view of a C portion in FIG. 1 in the presence of an obstacle.

FIG. 5 is a view showing a disassembled state of the C portion.

FIG. 6 is a side view of a front shutter mechanism of a conventional magneto-optical disk device.

FIG. 7 is a side view of the same when a disc cartridge is inserted.

[Explanation of symbols]

 1 Front Bezel 2 Disc Cartridge Insertion Port 3 Shutter 4 Support 5 Torsion Spring 6 Cartridge Holder 13 Secondary Shutter 14 Secondary Shutter Support Pin 16 Side Plate Plate Gear Support Pin 18 Disc Cartridge 19 Plate Gear 20 Plate Gear 21 Torsion Spring 22 Cartridge Holder rack gear part 23 Secondary shutter rack gear part

Claims (1)

[Claims] 1. A front shutter mechanism in a magneto-optical disk device, comprising a shutter for rotating and moving a disk cartridge insertion / ejection operation to open and close a disk cartridge insertion opening of a front bezel portion, and a cartridge incorporating the disk cartridge. With a configuration in which a shutter that moves up and down as the cartridge holder moves up and down is provided via a plate gear provided in the holder and a gear that has a clutch action using a torsion spring, a structure is provided when inserting or not inserting the magneto-optical disk cartridge. A front shutter mechanism for a magneto-optical disk device, which is capable of always closing the disk cartridge insertion opening of the front bezel part safely and smoothly and has a dustproof effect inside the device.