JPH05274767A - Disk device - Google Patents

Abstract

PURPOSE:To load a disk without providing excess mechanism except the accessing mechanism of a reproducing head by lifting its one end, passing through between both heads and moving a cartridge to a placing position. CONSTITUTION:Optical heads 18, 21 are moved to alternate positions by linear motors 17, 20 and information is reproduced from both surfaces of an optical disk. At the time of loading the disk, the cartridge 2 is inserted from a cartridge loading/unloading port. At this time, the cartridge is placed on a turntable 15 after passing through between the optical heads 18, 21 and moving to the prescribed placing position through prescribed a loading guide member and a holder guide groove, etc., in the state of lifting one end of the cartridge 2 or lowering one end. Thus, the disk is loaded without the excess mechanical corrective mechanism of the retreat mechanism, etc., of the optical head required usually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc device such as an optical device for reproducing information from both sides of an optical disc on which information is recorded.

[0002]

2. Description of the Related Art In recent years, an optical disc device for reproducing information from an optical disc contained in a cartridge has been put into practical use. In such an optical disc device, a device has been developed in which information is reproduced from an optical disc having data recorded on both sides by using focused light such as a laser beam.

In this optical disk device, the optical disk inserted from the insertion slot is moved to the position of the turntable by the loading mechanism and is provided on the upper surface side and the lower surface side of the optical disk while being rotated by the turntable. Playback is performed by an optical head. This optical head is moved in the radial direction of the optical disc by the moving mechanism (access mechanism section),
Playback is performed.

Conventionally, as the loading mechanism, an elevating type or a horizontal type is provided, and an avoiding means for avoiding a collision between the cartridge and the optical head must be provided in the access mechanism section. .. As the avoidance means, when the optical disk is loaded on the turntable, the optical head is retracted to a retracted position where it does not interfere. As a result, a mechanical correction mechanism unrelated to the access mechanism has to be provided in the moving mechanism of the optical head, resulting in an extra burden on the mechanism section.

However, in an optical disk device which requires highly accurate control conditions, a mechanical vibration does not affect mechanical access because a vibration caused by the movement of the accelerator mechanism affects a small vibration. The problem is that it is difficult and structurally large.
Therefore, without providing an extra mechanism in the access mechanism,
A device that can load an optical disk is desired.

[0006]

SUMMARY OF THE INVENTION As described above, according to the present invention, there is a demand for a disc that can be loaded without providing the moving mechanism of the reproducing head with an extra mechanism other than the access mechanism. An object of the present invention is to provide a disc device capable of loading a disc without providing the reproducing head moving mechanism with an extra mechanism other than an access mechanism.

[0007]

DISCLOSURE OF THE INVENTION In a disc apparatus of the present invention, which reproduces information from both sides of a disc on which information is recorded, a cartridge containing the disc and an insertion slot for inserting the cartridge. A housing having a disk, two first and second reproducing heads provided in the housing for reproducing information from both sides of the disk, and the first and second reproducing heads respectively. Provided in the housing, first and second moving mechanisms that move in the direction, mounting means for mounting the cartridge at a position where the disk in the cartridge is reproduced by the first and second reproducing heads. In the state where the first and second reproducing heads are moved to alternate positions by the first and second moving mechanisms,
The cartridge inserted through the insertion port is passed through between the first and second reproducing heads with one end of the cartridge being raised or one end of the cartridge being lowered, and mounted by the mounting means. It consists of a loading mechanism that moves to the position where it is placed.

The disc device of the present invention reproduces information from both sides of the disc by irradiating the disc on which information is recorded with a laser beam, and a cartridge containing the disc,
A housing having an insertion opening for inserting the cartridge, two first and second optical heads provided in the housing for reproducing information from both sides of the disk by using a laser beam, The first of
First and second moving mechanisms for respectively moving the second optical head in the radial direction, and mounting for mounting the cartridge at a position where the disk in the cartridge is reproduced by the first and second optical heads. Means and a cartridge inserted in the housing in a state where the first and second optical heads are moved to alternate positions by the first and second moving mechanisms. ,
When one end of the cartridge is raised or one end of the cartridge is lowered, the first and second
The loading mechanism is configured to pass through between the optical heads and move to the position where the above-mentioned mounting means mounts it.

In the disc device of the present invention, the disc on which information is recorded and which is being rotated is irradiated with a laser beam to reproduce the information from both sides of the disc. Cartridge, a housing having an insertion port for inserting the cartridge, and two first cartridges provided in the housing for reproducing information from both sides of the rotated disk by using a laser beam. , A second optical head, first and second moving mechanisms for radially moving the first and second optical heads, and a disk in the cartridge reproduced by the first and second optical heads. Mounting means for mounting the cartridge in a rotated state at a fixed position, and the first and second mounting means provided in the housing. The moving mechanism in a state where the first, second optical head is moved to alternate positions,
The cartridge inserted through the insertion opening is passed through between the first and second optical heads with one end of the cartridge raised or one end of the cartridge lowered and mounted by the mounting means. It consists of a loading mechanism that moves to the position where it is placed.

[0010]

According to the present invention, in the above-mentioned structure, the information is reproduced from both sides of the disc on which the information is recorded.
In the state in which the reproducing head is moved to the alternate position, the cartridge inserted from the insertion opening is placed in the state where one end of the cartridge is lifted up or one end of the cartridge is lowered, It passes through between the reproducing heads and is moved to a position where it is placed by the placing means.

[0011]

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

FIG. 1 shows a sectional structure of an optical disk device 1 as a disk device of the present invention, and FIG. 2 shows an appearance of a cartridge 2 handled by the optical disk device 1.

The optical disk device 1 has the following structure. That is, a cartridge insertion / removal opening (insertion opening) 5 that can be opened and closed by a shutter (not shown) is formed in the front portion 4 on the front surface of the housing 3, and the information including the drive base mechanism 6 and the loading mechanism 7 is provided inside. A processing unit (not shown) and a control circuit board (not shown) for driving them are housed.

As shown in FIG. 2, the cartridge 2 has an optical disc (hereinafter simply referred to as disc) 11 having a diameter of 300 mm (12 inch), which is an information storage medium, incorporated therein. Both the side and side B can be used. The cartridge 2 has a window 12 for exposing a part of the disc 11.
And a shutter 13 for opening and closing the window 12 is slidably provided.

Further, the drive base mechanism 6 has a drive base 14 and a turntable 15 for holding the disc 11 and rotating the same.
6, and a recording / reproducing optical head 18 for performing information processing by radiating a laser beam to the information recording layer on the lower surface side of the disk 11 by moving it in the radial direction of the disk 11 by the linear motor 17. It has a built-in configuration,
An optical head 21 for recording and reproducing that moves information in the drive base 19 in the radial direction of the disk 11 by a linear motor 20 and irradiates a laser beam to the information recording layer on the upper surface of the disk 11 to perform information processing. It is configured to include. The optical heads 18 and 21 include a pickup unit 18 for tracking and focusing, respectively.
a and 21a are provided.

Further, the loading mechanism 7 is provided on the drive base 14 and, as shown in FIG. 3, a cartridge holder 30 for holding the cartridge 2 and a metal plate for taking in and moving the cartridge holder 30 to a predetermined position. Loading cam members 31, 3
1 and loading guide members 32, 32 made of a metal plate for guiding the loading cam members 31, 31 and the cartridge holder 30.

Further, holder guide pins 33, 33, 34, 34 are provided on both side surfaces of the cartridge holder 30 so as to project therefrom. These holder guide pins 33, 33
As shown in FIGS. 3 and 4 to 7, the state of being guided by the holder guide groove 37 formed on the side surface of the loading guide member 32 after penetrating the cam groove 35 formed in the loading cam member 31. Has become. The loading cam members 31, 31 are movable along the insertion direction of the cartridge 2. Next, the loading cam member drive means 40 as a guide member moving means for driving the loading cam members 31, 31 will be described with reference to FIG.

A worm gear 41 is fixed to the drive shaft of the loading motor 39, which is a drive source, and the worm gear 41 is fixed to the pin 4 fixed to the drive base 14.
It meshes with a worm wheel gear 43 whose rotation center is 2. This worm wheel gear 43 has a pulley 44
Are integrally provided, and an endless toothed belt 45 is looped over.

The toothed belt 45 is wound around a pulley 47 which is integral with a first pinion 46 which meshes with a rack portion 31a formed on a part of one loading cam member 31.

On the other hand, a part of the worm wheel gear 43 is integrally formed with a gear portion 43a, and a pin 48 fixed to the drive base 14 is attached to the gear portion 43a.
A reverse rotation gear 49 having a rotation center of is meshed. Further, the reverse rotation gear 49 is integrally provided with a pulley 50, and an endless toothed belt 51 is stretched around the pulley 50. This toothed belt 51 meshes with a rack portion 31a formed on a part of the other loading cam member 31
It is in a state of being hung on a pulley 53 which is integral with the pinion 52.

The loading cam member 3 is rotated by rotating the loading motor 39 in the forward or reverse direction.
1, 1 and 31 are designed to move forward or backward in the same direction at a constant speed. Next, the loading operation of the cartridge 2 in the above configuration will be described.

That is, when the cartridge 2 is inserted into the cartridge holder 30 and a cartridge insertion detection switch (not shown) is activated, the loading cam member 31 is loaded.
The loading motor 39 of the drive means 40 for driving the motor rotates in the forward direction, and as described above, the loading cam member 3
1, 31 move in the depth direction. Further, the linear motors 17 and 20 are driven, the optical head 17 is moved to the left end in the drawing, and the optical head 21 is moved to the right end in the drawing.

At this time, each of the loading cam members 31 is integrally formed with the loading cam member 31 by the holder guide pins 33, 33, 34, and 34 being guided by the holder guide grooves 37 of the loading guide member 32. Move along the slope of. That is, the states of FIG. 5, FIG. 6, and FIG. 7 are sequentially changed from the state of FIG.

Then, when the loading cam member 31 reaches the position shown in FIG. 7, a stop switch (not shown) when the cartridge is inserted is operated by a protrusion (not shown) provided on a part of the loading cam member 31. Then, the loading motor 39 is stopped.

By moving the cartridge 2 along the inclination of the holder guide groove 37 as described above, the rear end of the cartridge 2 is inclined by an angle which is inserted through the gap between the upper and lower optical heads 18 and 21. The disk is loaded in a state of being lifted or so that the head hangs down, passes through the gap between the upper and lower optical heads 18 and 21, and is loaded into the disk clamp position on the turntable 15 of the spindle motor 16. It

As a result, the disk 11 housed in the cartridge 2 is held at the position where the laser beam from the optical heads 18 and 21 as the laser beam irradiation means is irradiated.

In the process from the state of FIG. 4 to the state of FIG. 6, the cartridge shutter opening / closing mechanism (not shown) opens the shutter 13 of the cartridge 2.

Further, the discharging operation of the cartridge 2 causes the loading motor 39 of the loading cam member driving means 40 to rotate in the reverse direction in response to the cartridge discharging signal, whereby the operation opposite to the insertion operation described with reference to FIGS. 4 to 7 is performed. Then, a part of the cartridge 2 is returned to a state where it is projected from the cartridge insertion / removal opening 5. In this state, a stop switch (not shown) for discharging is stopped by pressing a projection (not shown) integrally provided on the loading cam member 31.

On the other hand, in the process of discharging the cartridge, the cartridge shutter opening / closing mechanism (not shown) performs the reverse operation of the shutter opening operation to close the shutter 13 of the cartridge 2. The cartridge 2 is
Since it is returned to the position where it was inserted, it can be pulled out by hand.

As described above, in the case where the information is reproduced from both sides of the optical disc on which the information is recorded, the optical head is inserted from the cartridge insertion / ejection slot while the optical head is moved to the alternate position by the linear motor. With the cartridge, with one end of the cartridge raised or one end of the cartridge lowered,
The optical head passes through between the optical heads and moves to a position where the turntable is placed.

That is, the present invention is provided with a loading mechanism in which the loading path of the loading mechanism is devised so that the disk cartridge can be loaded according to the positional relationship of the conventional access mechanism. Thus, the optical disk can be loaded without providing the linear motor of the optical head with an extra mechanism other than the access mechanism.

Although the optical disk device using the optical disk as the disk has been described in the above embodiment, the present invention is not limited to this, and it can be applied to an information recording / reproducing device for an information storage medium such as a magnetic disk and is applicable to devices in all fields. It can be applied, the weight of the entire apparatus can be reduced, the problem of resonance of the mechanical mechanism can be solved, and the structure can be simplified.

[0033]

As described in detail above, according to the present invention,
It is possible to provide a disc device capable of loading a disc without providing the moving mechanism of the reproducing head with an extra mechanism other than the access mechanism.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the configuration of an optical disk device according to an embodiment of the present invention.

FIG. 2 is a plan view showing the configuration of the cartridge shown in FIG.

FIG. 3 is a view for explaining the loading mechanism of FIG.

FIG. 4 is a view for explaining a moving state of the cartridge holder by the loading mechanism of FIG.

FIG. 5 is a view for explaining a moving state of the cartridge holder by the loading mechanism of FIG.

6A and 6B are views for explaining a moving state of the cartridge holder by the loading mechanism of FIG.

FIG. 7 is a view for explaining a moving state of the cartridge holder by the loading mechanism of FIG.

[Explanation of symbols]

2 ... Cartridge, 3 ... Housing, 7 ... Loading mechanism, 11 ... Optical disc, 15 ... Turntable, 1
7, 20 ... Linear motor, 18, 21 ... Optical head.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiki Maeda Toshiba Intelligent Technology Co., Ltd. 70 Yanagimachi, Sachi-ku, Kawasaki-shi, Kanagawa

Claims (3)

[Claims] 1. A disc device for reproducing information from both sides of a disc on which information is recorded, a cartridge accommodating the disc, a housing having an insertion opening for inserting the cartridge, and an inside of the housing. And two first and second reproducing heads for reproducing information from both surfaces of the disc, and a first and a second reproducing head for moving the first and second reproducing heads in the radial direction, respectively. A second moving mechanism; a mounting means for mounting the cartridge at a position where the disk in the cartridge is reproduced by the first and second reproducing heads; With the second moving mechanism, the cartridge inserted from the insertion opening is inserted into the cartridge with the first and second reproducing heads being moved to alternate positions. With one end of the cartridge raised or one end of the cartridge lowered,
A disk device comprising: a loading mechanism that moves between the first and second reproducing heads and moves to a position where the mounting means mounts it. 2. A disk device which reproduces information from both sides of the disk by irradiating a disk on which information is recorded with a laser beam, and a cartridge containing the disk, and the cartridge. A housing having an insertion opening for insertion, two first and second optical heads provided in the housing for reproducing information from both sides of the disk using a laser beam, and First and second moving mechanisms for respectively moving the first and second optical heads in a radial direction, and mounting the cartridge at a position where a disk in the cartridge is reproduced by the first and second optical heads. The mounting means for mounting and the first and second optical heads provided in the housing, and the first and second optical heads are staggered. In the state of being moved to the position of, the cartridge inserted from the insertion port, in a state where one end of the cartridge is lifted or one end of the cartridge is lowered,
A disk device comprising: a loading mechanism that moves through the space between the first and second optical heads and moves to a position where the mounting means mounts the device. 3. A disc device which reproduces information from both sides of the disc by irradiating a disc on which information is recorded and which is being rotated with a laser beam, and a cartridge containing the disc. A housing having an insertion opening for inserting the cartridge, and two first and first housings provided in the housing for reproducing information from both sides of the rotating disk by using a laser beam. A second optical head, first and second moving mechanisms for moving the first and second optical heads in a radial direction, and a disk in the cartridge reproduced by the first and second optical heads. Mounting means for mounting the cartridge in a rotated state at a fixed position, and the first and second mobile units provided in the housing. A state in which one end of the cartridge is lifted up or one end of the cartridge is lowered in the cartridge inserted from the insertion opening in a state where the first and second optical heads are moved to alternate positions depending on the structure. so,
A disk device comprising: a loading mechanism that moves through the space between the first and second optical heads and moves to a position where the mounting means mounts the device.