JPH05217264A - Shutter opening/closing device for disk cartridge - Google Patents

Abstract

PURPOSE:To thin a device and to increase the degree of freedom of setting up a related member by placing a long lever and a short lever for moving a shutter backward a disk cartridge housing part and positioning it in the same plane with a disk cartridge. CONSTITUTION:A long lever 10 capable of rotating and the short lever 11 moving an opening/closing shutter 4 in the direction of opening an opening part are set up on a cartridge holder 7 inserting a disk cartridge l backward than the cartridge housing part of the holder 7 and on the same plane with the cartridge 1. Thus, the long lever 10 and the short lever 11 do not project in the direction of the thickness of the cartridge and a shutter driving means is provided in a small space and entire device is thinned. Further, by setting the supporting part of both levers avoiding on the prolongation of the opening part 5, the moving space of an optical head, etc., is spread effectively till a position overlapping with the lever and the degree of freedom of setting up the member is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter opening / closing device for a disc cartridge containing a recording disc.

[0002]

2. Description of the Related Art In a disk drive device, when a disk cartridge is loaded, a recording / reproducing head allows access to the recording disk, so that an opening closed by a shutter is opened when the disk cartridge is not used. Is provided to the outside.

In Japanese Patent Laid-Open No. 3-19166, a shutter opening means composed of a rotatable main lever and a sub-lever is provided, and the shutter is moved smoothly without feeling resistance even for a disk cartridge having a large shutter stroke. Thus, the shutter opening device for opening the opening is shown.

[0004]

In the above-mentioned conventional shutter opening device, two levers are installed on the outer upper surface of the cartridge holder, and a part of the levers is in a position overlapping with the disk cartridge. For this reason, the entire apparatus becomes thicker in the thickness direction of the disk cartridge, which is an obstacle to making the apparatus thinner.

An object of the present invention is to provide a shutter opening / closing device for a disk cartridge, which has a simple structure, can be made thin, and can increase the degree of freedom in installing related members.

[0006]

In order to achieve the above object, the present invention relates to a long lever rotatably provided on a cartridge holder into which a disc cartridge accommodating a recording disc is inserted, and to this long lever. A shutter opening / closing device for a disc cartridge, comprising a rotatably provided shutter for opening and closing the opening of the disc cartridge and moving the shutter in the opening direction. The lever and the lever are installed so as to be located behind the disk cartridge housing portion of the cartridge holder and on the same plane as the disk cartridge.

Further, it is characterized in that the support portion of the short lever of the long lever is located at a position other than the extension of the opening in the disc cartridge insertion direction when the opening is opened.

Further, at least a portion of the long lever and the short lever, which is located on the extension of the opening in the disc cartridge insertion direction, is arranged to be substantially on the same plane as the recording disc.

[0009]

According to the above means, the long lever and the short lever for moving the shutter are located in the substantially same plane as the disc cartridge behind the disc cartridge accommodating portion of the cartridge holder.
Since the long lever and the short lever do not project in the thickness direction of the disc cartridge, the shutter driving means can be installed in a small space, and the overall thickness of the device can be reduced.

Further, by installing the support portions of both levers, which are required to have a thickness for the sake of strength, so as to avoid the extension of the opening portion of the disk cartridge, it is possible to effectively reach the position where the lever overlaps with the opening portion of the optical head or the like. It can be used as a moving space for a moving member, increasing the degree of freedom in installing the member.

Further, by positioning the lever existing on the extension of the opening of the disk cartridge in the substantially same plane as the recording disk, for example, in a magneto-optical disk,
Even if the magnetic head overlaps with the lever, the magnetic head can be brought close to the magneto-optical disk regardless of the presence of the lever, space can be saved, and a low power consumption type magnetic head can be used. The cost can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the structure of an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the essential parts of the present embodiment, where 1 is an optical disk, magneto-optical disk, magnetic disk, etc. in a case 2. The disk cartridge 4 in which the recording disk 3 of FIG. 1 is housed is movable with respect to the case 2 in order to open and close the opening 5 formed in the case 2 of the disk cartridge 1 (closed state in FIGS. 1 and 2). A shutter, 6 is an operating piece provided on the shutter 4 so as to extend to the front side of the case 2, 7 is a cartridge holder which is one of the constituent members of a known disc drive device in which the disc cartridge 1 is loaded, 8 Is a known magnetic head installed when the disk drive device is a magneto-optical disk drive device.

Further, 9 is a shutter driving means installed at the back of the cartridge holder 7 from the disk cartridge accommodating portion, and comprises a long lever 10 and a short lever 11. One end of the long lever 10 is rotatably supported by the cartridge holder 7 by a support shaft 12, and the short lever 11 is rotatably supported by a shaft 13 by a rotation support portion 10a at the other end. The short lever 11 is provided with an operation pin 14 at the end opposite to the rotation support portion 10a of the long lever 10. Further, an elastic member (not shown) applies a biasing force to the long lever 10 in a counterclockwise direction about the support shaft 12, and a short lever 11 to a biasing force in a clockwise direction about the shaft 13. Has been.

In the embodiment having the above construction, when the disc cartridge 1 is inserted into the cartridge holder 7, the operation pin 14 of the short lever 11 is moved to the disc cartridge 1
Abut the front side of. When the disk cartridge 1 is further inserted, the operation pin 14 causes the operating piece 6 of the shutter 4 to move.
The long lever 10 and the short lever 11 approach each other while rotating about the shaft 13 and rotate the long lever 10 toward the rear of the cartridge holder 7 about the support shaft 12. Move.

Then, as shown in FIG. 3, the long lever
By rotating the cartridge holder 7 of 10 to the back rear,
The short lever 11 moves on the front side of the disc cartridge 1, and the operation pin 14 presses the operating piece 6 of the shutter 4 in the shutter opening direction to move the shutter 4 and open the opening 5. In this state, the recording disk 3 is exposed to the outside, and a well-known optical pickup or a magnetic head 8 in a magneto-optical disk drive device is set in the opening 5, so that recording / reproducing of information, It becomes possible to erase.

In this embodiment, the long lever 10 and the short lever 11 are provided at the back of the cartridge holder 7
The disk cartridge 1 is installed so as to be in substantially the same plane as that of the disk cartridge 1 so as not to project from the upper and lower surfaces of the disk cartridge 1, so that the space for installing the shutter driving means is reduced, particularly in the thickness direction of the disk cartridge of the apparatus. We are trying to make it thinner.

The rotation support portions 10a of the long lever 10 and the short lever 11 are required to be thick in terms of strength in order to rotate accurately with respect to each other and to have durability, but the optical pickup or the magnetic head 8 is used. The presence of the rotation supporting portion 10a in the movement path for accessing the recording disk 3 through the opening 5 may affect the installation of components and the like.

Therefore, in this embodiment, when the opening 5 is opened and when the optical disc 3 is accessed, the rotation support portion 10a is formed by extending the opening 5 in the disc cartridge insertion direction as shown in FIG. It is installed at a position excluding the (range K part), up to a position where the optical pickup or the magnetic head 8 and the shutter driving means 9 overlap.
It can be used as a moving space without being affected by the existence of the rotation supporting portion 10a, thereby saving space.
Moreover, the degree of freedom in installing the optical pickup and the magnetic head 8 is increased.

FIG. 4 is an explanatory view of the installation state of the recording disk and related members. The recording disk 3 is a magneto-optical disk, and a magnetic field is applied by the upper magnetic head 8 and moved by a linear motor. Laser light is emitted from the optical pickup 20 on the lower side, and recording or erasing is performed in the recording area H of the recording disk 3.

The magnetic disk 8 is the recording disk 3
The magnetic efficiency is better when they are closer to each other. Therefore, in this embodiment, at least the portions 10b and 11a of the long lever 10 and the short lever 11 which are located on the front side of the disk cartridge 1 and located in the above range K are in the same plane as the recording disk 3. The magnetic head 8 can be brought close to the recording disk 3 even if the levers 10 and 11 and the magnetic head 8 are overlapped with each other so as not to project from the upper and lower surfaces of the recording disk 3. There is. Therefore, the low power consumption type magnetic head 8 can be used, and the cost can be reduced and the space can be saved.

[0022]

As described above, according to the present invention,
By preventing the long lever and the short lever, which are shutter driving means, from projecting in the thickness direction of the disc cartridge, it is possible to reduce the thickness of the entire apparatus, and the supporting portions of the both levers, which require a thickness for strength, have an opening. Since it is installed at a position that does not interfere with the movement of the member that moves up to, it can be effectively used as a moving space for the member up to the position where it overlaps with the lever, increasing the degree of freedom in installing the member and saving space, and Space saving can be achieved by allowing the constituent members to be close to the recording disk without being affected by the presence of the lever. For example, by making the magnetic head close to the magneto-optical disk, a low power consumption type magnetic head can be used. With a simple configuration, such as cost reduction,
It is possible to provide a shutter opening / closing device for a disk cartridge, which can be made thin and can increase the degree of freedom in installing related members.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of a shutter opening / closing device for a disc cartridge according to the present invention.

FIG. 2 is an exploded perspective view of a main part of this embodiment.

FIG. 3 is a perspective view of the present embodiment in a state in which an opening is opened.

FIG. 4 is an explanatory diagram of an installation state of a recording disk and related members.

[Explanation of symbols]

1 ... Disc cartridge, 3 ... Recording disc, 4
... shutter, 5 ... opening, 7 ... cartridge holder, 8 ... magnetic head, 9 ... shutter drive means, 10 ...
Long lever, 10a ... Rotation support, 11 ... Short lever, 20 ... Optical pickup.

Claims (3)

[Claims] 1. A long lever rotatably provided on a cartridge holder into which a disc cartridge accommodating a recording disc is inserted, and a long lever rotatably provided on the long lever and opening / closing an opening of the disc cartridge. In a shutter opening / closing device for a disc cartridge, which comprises a short lever that engages with the shutter and moves the shutter in the opening direction, the long lever and the short lever are provided behind the disc cartridge housing portion of the cartridge holder, A shutter opening / closing device for a disk cartridge, wherein the shutter opening / closing device is installed so as to be substantially flush with the disk cartridge. 2. The disc according to claim 1, wherein when the opening is opened, the support portion of the short lever of the long lever is located at a position other than the extension of the opening in the disc cartridge insertion direction. Cartridge shutter opening and closing device. 3. A structure in which at least a portion of the long lever and the short lever, which is located on the extension of the opening in the disc cartridge insertion direction, is located in substantially the same plane as the recording disc. A shutter opening / closing device for a disc cartridge according to item 1.