JPH04328356A - Front shutter mechanism for magneto-optical disk device - Google Patents

Abstract

PURPOSE:To automatically close an insertion port at the time of inserting a cartridge by providing a second shutter closing the insertion port with the moving of the cartridge besides conventional front shutters. CONSTITUTION:A second shutter 13 supported by a supporting pin 14 is provided. Before a disk cartridge 19 is inserted, insertion port 2 is closely sealed by the first shutter 3 energized by a spring 5. When the disk cartridge 19 is inserted, an the supporting pin 14 of the second shutter 13 rises an oblique part guiding channel 12 by interlocking it with a cartridge holder 6, and the second shutter 13 closely seals the insertion port 2. Consequently, the port can be closed at the time of, inserting, which is conventionally difficult, with easy constitution without using an electrical driving means such as a motor and the like.

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 disk cartridge insertion slot provided in a front bezel in a magneto-optical disk device.

0002

2. Description of the Related Art A magneto-optical disk device is equipped with a front shutter mechanism for opening and closing a disk cartridge insertion opening in a front bezel portion provided for inserting and ejecting a disk cartridge.The conventional mechanism is shown in FIG. As shown in the figure, the shutter 3 is rotatably supported by a mounting portion 4 provided on the front bezel 1, and installed with a torsion spring 5 applying a force in the counterclockwise rotation direction in the figure. When the disc cartridge is not inserted, the shutter 3 closes the disc cartridge insertion opening 2 provided in the front bezel 1 from the inside of the apparatus. Further, as shown in FIG. 4, when inserting a disk cartridge, by pushing the disk cartridge 19 through the disk cartridge insertion opening 2, the shutter 3 is pushed open by the end of the disk cartridge 19. By pushing the disk cartridge into the device, a determined insertion motion causes the disk cartridge to move downward to a predetermined position. At this time, the shutter 3 was pressed open while being in contact with the top surface of the disk cartridge 19, and stopped at the position shown in the figure, thereby completing the insertion operation. Further, when ejecting the disk cartridge 19, by pushing in the eject switch 15 protruding from the front bezel 1 during the insertion operation, the disk cartridge 19 is inserted into the disk cartridge insertion slot 2 through a predetermined ejection operation.
The disk cartridge is moved upwardly to the same height as the disk cartridge, and is pushed out by another mechanism (not shown) to a position where a portion thereof protrudes from the disk cartridge insertion opening 2, and is held still. Thereafter, the shutter 3 is returned to the position shown in FIG. 3 by manually removing the disk cartridge 19, and the ejection operation is completed by closing the disk cartridge insertion opening 2.

0003

SUMMARY OF THE INVENTION Since magneto-optical disk devices are required to be thinner and smaller, and the space inside the device is limited, it is desirable that each mechanical section can also be made thinner and smaller. Furthermore, due to the nature of the medium and the recording and reproducing method, magneto-optical disk devices require high dust-proofing capabilities. As mentioned above, if the front shutter mechanism consists of only a shutter that can be pushed open by a disc cartridge, the disc cartridge insertion slot will remain open when the disc cartridge is inserted.
The dustproof function for the device is not fulfilled. Furthermore, if a mechanism is adopted in which the shutter closes the disk cartridge insertion opening even when a disk cartridge is inserted, an electric drive means such as a motor must be used, and the requirements for thinning and miniaturization cannot be met. The present invention has been made against the above background, and has a simple and compact structure that constantly closes the disk cartridge insertion slot provided in the front bezel regardless of whether a disk cartridge is inserted or not. An object of the present invention is to provide a front shutter mechanism for a magneto-optical disk device that can provide a high dustproof function.

0004

[Means for Solving the Problems] The present invention, which solves the above-mentioned problems, includes: a shutter that blocks a disk cartridge insertion slot provided in the front bezel from the inside of the device and is rotatably supported by the front bezel; and a disk cartridge. The slide chassis that holds the cartridge holder inside has a shutter that moves along the inside of the front bezel and is supported through a diagonal guide groove. A front shutter mechanism for a magneto-optical disk device is characterized in that the front shutter mechanism of a magneto-optical disk device is equipped with means for always closing a disk cartridge insertion port provided in the disk cartridge, regardless of whether a disk cartridge is inserted or not.

[0005]

[Operation] In the above structure, the shutter rotatably supported by the front bezel closes the disk cartridge insertion opening provided in the front bezel from the inside of the apparatus when the disk cartridge is not inserted. When inserting a disk cartridge, the shutter is pushed open by pushing the disk cartridge through the disk cartridge insertion opening, and as each mechanical section moves due to the predetermined insertion operation, the shutter is opened through the oblique guide groove provided on the slide chassis. A supported shutter closes the disk cartridge insertion port from the inside of the device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows the front shutter mechanism of a magneto-optical disk device when a disk cartridge is not inserted. A shutter 3 that closes a disk cartridge insertion slot 2 provided in the front bezel 1 from the inside of the apparatus is rotatably supported by a support portion 4 of the front bezel 1. Further, the shutter 3 is operated by a torsion spring 5.
In the figure, a force in the clockwise rotation direction is applied around the support portion 4 . When the disc cartridge is inserted, the disc cartridge 19 is held by the cartridge holder 6 within the apparatus. The cartridge holder 6 is supported by a guide pin 7 by an oblique guide groove 9 provided in a slide chassis 8 and a positioning guide groove 11 provided in a side chassis 10. The above configuration is the same part as the conventional technology. The configuration according to the present invention will be explained below. A shutter 13 supported by the slide chassis 8 via an oblique guide groove 12 is located below the disk cartridge insertion opening 2 inside the device of the front bezel 1. Further, 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 explained. FIG. 2 shows the state of the front shutter mechanism of the present invention when a disk cartridge is inserted.
When inserting a disk cartridge, by pushing the disk cartridge 19 through the disk cartridge insertion opening 2, the shutter 3 is pushed open by the end of the disk cartridge. Disc cartridge 19
When the slide chassis 8 is pushed into the device, the position fixing mechanism (not shown) is released, and the slide chassis 8 is moved to the position 1 by a spring (not shown).
From the position shown in the figure, move to the left in the figure and move to the position shown in Figure 2. Along with this movement, the cartridge holder 6 holding the disk cartridge 19 inside the device
is moved downward by the guide pin 7, the oblique guide groove 9, and the positioning guide groove 11, and moves the disk cartridge 19 to a predetermined position. As the slide chassis 8 moves, the shutter 13 moves to the position shown in the figure by pushing up the support pin 14 provided on the shutter 13, and the disk cartridge insertion slot 2 is opened from inside the device. block. The shutter 3 remains in contact with the upper surface of the disk cartridge 19 at the illustrated position. The eject switch 15 interlocked with the slide chassis 8 protrudes from the front bezel 1 to the illustrated position as the slide chassis 8 moves. When ejecting the disk cartridge from the inside of the apparatus, the eject switch 15 protruding from the front bezel 1 is pushed in to move the slide chassis 8 to the right in the figure. The slide chassis 8 moves to the position shown in FIG. 1, and by reversing the insertion operation, the cartridge holder 6 returns to the position shown in FIG. Disc cartridge 1
9 is pushed out from the disk cartridge insertion slot 2 to a position where a portion thereof protrudes from the front bezel 1 by the spring force of other mechanical parts (not shown). Thereafter, by manually pulling out the disk cartridge 19, the shutter 3 returns to the position shown in FIG. 1 and closes the disk cartridge insertion opening 2, thereby completing the ejection operation.

[0007]

[Effects of the Invention] Since the present invention is constructed as described above, it has the following effects. In addition to the conventional shutter that is rotatably supported by the front bezel, the disk cartridge insertion opening is blocked by a shutter that moves through a diagonal guide groove as the mechanical parts that hold the disk cartridge move when the disk cartridge is inserted. Since it has a removable structure, it has become possible to always automatically close the disk cartridge insertion slot of a magneto-optical disk device, which has been difficult in the past, without using electric drive means such as a motor. Furthermore, the above configuration reduces the number of parts and saves space.

[Brief explanation 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 side view of the disk cartridge in the inserted state.

FIG. 3 is a side view of a front shutter mechanism of a conventional magneto-optical disk device.

FIG. 4 is a side view of the disk cartridge in the inserted state.

[Explanation of symbols]

1 Front bezel 2 Insertion port 3 Shutter (first shutter) 4 Support part 5 Spring 6 Cartridge holder 7 Guide pin 8 Slide chassis 9 Oblique guide groove 10 Side shutter 11 Positioning guide groove 12 Oblique guide groove 13 Shutter (second shutter) 14 Support pin 15 Slide chassis 19 Disk cartridge

Claims (1)

[Claims] 1. An optical disk device comprising at least an optical head that performs recording and reproducing operations on an optical recording medium, an insertion port provided in the device, a first shutter means for closing the insertion port, and a first shutter means for closing the insertion port. a cassette holder that holds a cartridge containing the optical recording medium inserted into the apparatus by pushing the first shutter means from the opening;
a moving means for moving the cassette holder within the apparatus; a second shutter means for closing the insertion opening when the cassette holder is moved by the moving means; an inclined portion provided on the moving means; and a support pin provided at one end of the second shutter means, and the second shutter means closes the insertion opening when the support pin moves within the inclined portion by movement of the moving means. Front shutter mechanism for magneto-optical disks.