JPH0210503A - Recording/reproducing device - Google Patents

Abstract

PURPOSE:To make a magnetic field supplying means approach a disk surface regardless of the size of a space necessary for the loading of a cartridge by providing a reciprocatively movable arm along a turning shaft, and moving the magnetic field supplying means. CONSTITUTION:The title device has a means to shift a cartridge 1 and a means to supply a magnetic field on a disk 2, and it is equipped with an arm 25, which has the magnetic field supplying means at one edge, is turningly supported by the turning shaft at the other edge, and is composed so as to be reciprocatively morable along the rotary shaft, and a driving means to reciprocatively move the arm 25. Consequently, when the cartridge 1 is loaded, the magnetic field supplying means is retreated from the space where the cartridge passes through, after the completion of the loading, the arm 25 providing the magnetic field supplying means is turned by the driving means, and makes the magnetic field supplying means approach the disk 2. Thus, in the simple constitution, the magnetic field supplying means can be made to approach the disk regardless of the size of the space necessary for the loading of the cartridge.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magneto-optical recording/reproducing device which uses a cartridge containing a recording disk and which requires a magnetic field to be supplied for recording and erasing information. In particular, it concerns the arrangement for the movement of the magnetic field supply within the device and the loading of the cartridge.

2. Description of the Related Art In recent years, systems using recording disks called magneto-optical disks on which information can be written, reproduced, and erased using laser light have been attracting attention.

Generally, magneto-optical disks require exposing the recording medium to a magnetic field when writing or erasing information.

Therefore, conventionally, a coil is often installed on the recording surface of the disk to apply a magnetic field.

Additionally, many magneto-optical disks are housed in cartridges to protect the recording surface from dust and fingerprints.

FIG. 7A is a schematic diagram of a recording/reproducing apparatus using the magneto-optical disk as described above. Reference numeral 1 denotes a cartridge in which a disk 2 is housed.

The cartridge 1 is provided with openings 1a and 1b (see FIG. 7C). A cartridge holder 3 is made of sheet metal and holds the cartridge 3. 4 is called a slider, and is indicated by arrow Y1. It is configured to be slidable in the Y2 direction and biased in the Y and Y1 directions by a spring (not shown). The slider 4 is provided with four diagonal notches 4a as shown in the figure, and four pins 3b attached to the cartridge holder 3 are engaged with each of these notches. Further, the cartridge holder 3 is provided with an engaging portion 3c, and the cartridge holder 3 is provided with an engaging portion 3c, and a bottle 6 erected on the chassis 5.
C, and restricts the cartridge holder 3 from shifting in the Yl and Y2 directions.

The slider 4 is provided with a lock portion 9, and the lock portion 9 is formed with a notch 9a.

A pin 13 rotatably supported by the chassis 5aiC pin 12 and attached to one end of the lock lever 101d engages with a notch 9a of the lock portion 9. A spring 11 is applied between the lock lever 10 and the chassis 6a, so that the end IQa of the lock lever 10 is aligned with the arrow Y1.
is biased to move in the direction. Reference numeral 8 denotes a coil for supplying a magnetic field, which is fixed to the chassis 5a by a yoke 7 and a support column 6.

FIG. 7 shows the mounting structure of the optical head, and shows that the head 30 is positioned below the cartridge 1 and is adapted to irradiate the recording surface of the disk 2 with a laser beam.

In the conventional example with the above configuration, loading of the cartridge 1 is performed as shown below. FIG. 8 is an operation explanatory diagram showing the loading operation.

First, when the cartridge 1 is inserted in the y2 direction in FIG. 8A, the abutting portion 10 of the lock lever 1° shown in FIG. 7A
The end of the cartridge 1 comes into contact with a. Then, the lock lever 1o rotates in the direction of the arrow in the figure and locks the bottle 13 and the notch 9.
The slider 4 slides in the y2 direction as it loses its engagement with a. Since the notch 4a of the slider 4 and the pin 3b of the cartridge holder 3 are engaged, a downward force is applied to the cartridge holder 3 by the diagonal notch 3a. Here, the cartridge holder 3 descends in the Z1 direction because its engaging portion 3C engages with the bottle 6C set up on the chassis 5, and its movement is restricted. FIG. 8 shows the lowered state. In this state, the disk 2 in the cartridge 1 and the motor 33 are engaged. The motor 33 enters into the cartridge 1 through the opening 1b at the back of the cartridge 1 shown in FIG. 7C. When the coil 8 is energized in this state, a magnetic field is generated and the disk 2 is exposed to the magnetic field.

Next, by rotating the motor 33 and operating the optical head 3o, it becomes possible to record and erase signals on the disk 2.

Returning the cartridge 1 from the state shown in FIG. 8B to the state shown in A is carried out, for example, by sliding the slider 4 in the Y2 direction using a lens or manually.

Problems to be Solved by the Invention In the device as described above, the coil 8 for loading the cartridge 1 must be located away from the range in which the cartridge 1 moves during loading. Tsumashi, No. 8
The valve coil 8 with the dimension h shown in Figure B is
The cartridge 1 will be separated from the cartridge 1 in the state shown in Figure B).

If the distance h is large, the magnetic field supplied to the disk 2 from the coil becomes weak. The size of h is determined by the shape of the cartridge, so there is a limit to how small it can be.
In order to obtain a desired magnetic field on the disk 2 surface, the coil must be made small, but there is a limit to how small the current flowing through the coil can be. Therefore, there is a problem in that there is a limit to how small the device can be made.

In view of the above-mentioned problems, the present invention provides a recording and reproducing device that can move the magnetic field supply means with a simple structure and bring the magnetic field supply means close to the disk surface regardless of the size of the space required for loading the cartridge. The purpose is to provide

Means for Solving the Problems In order to achieve this object, the present invention provides a transport means for transporting a cartridge substantially parallel to the rotation axis of a motor that rotates a disk, a magnetic field supply means for supplying a magnetic field onto the disk, and a magnetic field supply means for supplying a magnetic field onto the disk. an arm having the magnetic field supply means attached to one end, the other end being rotatably supported by a rotation axis substantially parallel to the rotation axis of the motor, and configured to be movable back and forth along the rotation axis; The arm is provided with driving means for rotating or reciprocating the arm along the rotation axis.

According to the above-described structure, when the cartridge is loaded by the transfer means, the magnetic field supply means is retracted from the space through which the cartridge passes during loading, and after the loading is completed, the magnetic field supply means is turned off at one end. An arm attached to the magnetic field supply means is rotated by a driving means, and when it comes over the disk, it is lowered to bring the magnetic field supply means closer to the disk.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a cartridge, 2 is a disk, and 3 is a cartridge.
is a cartridge holder, 4 is a slider, 5 is a chassis, 8 is a coil, 9 is a lock part, 1o is a lock lever 11
Reference numeral 1 is a spring, and reference numeral 12 and 13 are pins, both of which are completely similar to those of the conventional example described above, and have the same function. Further, the optical head is similar to the optical head 3o of the conventional example shown in FIG. 2B and is located in the same position.

A solenoid 14 is engaged with a lock portion 9 attached to the slider 4 by a pin 16, and is configured to pull the slider 4 in the Y2 direction when energized.

16 is a drive motor as a drive source; 18 is a worm; 1
Reference numerals 9, 20, and 21 are spur gears that serve to reduce the rotation speed of the drive motor 16 and transmit it to the gear 22.

17 is a sub-chassis, drive motor 16, spur gear 19
, 20, 21 and gear 22 are supported. Sub chassis 17
is attached to the chassis 5 by struts 24.

In FIG. 1, the sub-chassis 17 is shown in perspective to aid understanding. Pawl υ spur gears 19, 20, 21 and
The gear 22 is configured on the lower side of the sub-chassis 17.

An arm 25 is attached to the gear 22, and a coil 8 as a magnetic field supply means is attached to the other end.

Reference numeral 23 is a bearing, and a solenoid 31 is attached below this for moving the arm 26 up and down in the zl and z2 directions (see FIGS. 2A and 2C). The bearing 23 supports the arm 25 so that it can rotate in the directions of arrows R1 and R2 in the figure. It can be slid in the Z2 direction.

The configuration of the bearing 23 and the solenoid 31 will be explained with reference to FIGS. 2a and 2b. The solenoid 31 is attached to the stay 3 on the chassis 5.
It is fixed at 1a. A core 31b of the solenoid 31 is connected to a boss 22a attached to the gear 22. The boss 22a and the bearing 23 are fitted together. A coil spring 32 is attached between the gear 22 and the bearing 23 along the outer periphery of the boss 22a. This coil spring 32 urges the gear 22 and the arm 25 in the direction of arrow Z2.

The operation of the embodiment with the above configuration will be described below.

3 to 6 are plan view explanatory diagrams of the main parts.

First, FIG. 3 shows the state before the cartridge is inserted into the apparatus. In the figure, the area surrounded by the one-dot chain line (arrow C) is the space into which the cartridge 1 is inserted. As shown in the figure, the arm 26 is separated from the space into which the cartridge 1 is inserted. Also, the notch 9a of the lock portion 9 of the slider 4
A pin 13 is engaged with to restrict the movement of the slider 4.

Next, when the cartridge 1 is inserted in the 72 direction, the state shown in FIG. 6 is achieved. Lock lever 1 at the end of cartridge 1
0 is pushed and rotated in the direction of arrow A in the figure, and the pin 13 is removed from the notch 9a. Then, as mentioned above, slider 4
Since it is biased in the Yl direction (biasing means not shown), it slides in the Y1 direction. Then, since the slider 4 and the cartridge holder 3 are engaged with each other through the pin 3b and the notch 4a, the cartridge holder 3 is attached to the cartridge 1.
descends with

Next, when the motor 16 is energized, rotational force is transmitted to the worm 18 and spur gears 19 to 21, and the gear 22 and arm 26 rotate in the direction of arrow R1 in the figure. At this time, since cartridge 1 has already descended, arm 2
6 and cartridge 1 do not interfere with each other. After the cartridge 1 is inserted into the position shown in FIG. 2A, the cartridge is lowered to the position shown in FIG. (See Figure 6)
.

Next, when the solenoid 31 is energized, the gear 22 and the arm 25 are pulled down in the Z1 direction against the biasing force of the spring 32, and the coil 8 approaches the disk 2, resulting in the state shown in FIG. 2C. In this state, the motor 33 rotates, the disk 2 rotates, and when the coil 8 is energized, a magnetic field is supplied onto the surface of the disk 1, and the optical head 3o operates, making it possible to record and erase signals on the disk. .

FIG. 6 shows a state in which the cartridge 1 is taken out of the apparatus. From the state shown in FIG. 6, power to the solenoid 31 is cut off. Then, the biasing force of the coil spring 32 causes the gear 22 and the arm 25 to rise in the Z2 direction. Next, when the motor 16 is energized in the opposite direction to that described above, the arm 26 moves as shown by the arrow R2.
Cartridge 1 and arm 2 rotate as shown in Figure 6.
6 will be in a state of no interference.

Finally, when the solenoid 14 is energized, the slider 4 moves to y.
The cartridge is pulled in two directions, and the cartridge holder 3 and slider 4 are engaged with each other at the bin 3b and notch 4a, so that the cartridge rises in the 22 direction. This is the state shown in FIG. When the cartridge 1 is taken out in the direction 71 in this state, the lock lever 1o is rotated in the direction of arrow B, the pin 13 and the notch 9a are engaged, and the cartridge returns to its original state as shown in FIG.

The above sequential operations are performed by combining a normal microcomputer, motor, and solenoid control circuit.
, 33, and solenoids 31, 14 in sequence.

Effects of the Invention As described above, the present invention provides an insertion port for inserting and removing a cartridge containing a recording disk into the main body of the apparatus, and an insertion port for inserting and removing a cartridge containing a recording disk therein, and an insertion port for inserting and removing a cartridge containing a recording disk therein, and an insertion opening for inserting and removing a cartridge containing a recording disk therein. a motor for rotating the cartridge, a transport means for transporting the cartridge inserted into the apparatus main body through the insertion port substantially parallel to the rotation axis of the motor, a magnetic field supply means for supplying a magnetic field onto the recording disk, and An arm having a supply means attached to one end, the other end being rotatably supported by a rotation axis substantially parallel to the rotation axis of the motor, and configured to be movable back and forth along the rotation axis; It has a drive means for rotation or reciprocating movement along the rotation axis, and when the cartridge is being loaded by the transfer means, the magnetic field supply means is retracted from the space through which the cartridge passes during loading. After the loading is completed, the arm to which the magnetic field supply means is attached at one end is rotated by the drive means, and when it comes over the disk, it is lowered to bring the magnetic field supply means closer to the disk. With a simple configuration of a drive means connected to a moving shaft and a rotating shaft, the magnetic field supply means can be brought close to each other regardless of the size of the space required for loading the cartridge. However, it has great practical effects, such as being able to supply a strong magnetic field onto the disk surface.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a recording/reproducing apparatus according to an embodiment of the present invention, FIGS. 2 to 6 are side sectional views and plan views explaining the operation of the apparatus according to the embodiment, and FIG. 7 is a conventional example. FIG. 8 is a schematic perspective view of the recording and reproducing apparatus of FIG. 8, and a side view for explaining its operation. 1...Cartridge, 2...Disk (recording disk), 3...Cartridge holder,
4...Slider, 5...Chassis,
8... Coil, 9... Lock part, 1o
...Lock lever 113 ... Lock pin, 16 ... Drive motor, 18 ... Worm, 19-21 ... Spur gear, 22・・・・・・
...Gear, 23...Bearing, 26...Arm, 3o...Optical head, 31...
solenoid. Name of agent: Patent attorney Toshio Nakao and one other person (Figure IB) Figure CA) (E?)

Claims (1)

[Claims] an insertion port for inserting and removing a cartridge containing a recording disk into the apparatus main body; a motor that engages with the recording disk in the cartridge to rotate the recording disk; a transport means for transporting the loaded cartridge approximately parallel to the rotation axis of the motor; a magnetic field supply means for supplying a magnetic field onto the recording disk; the magnetic field supply means is attached to one end and the other end is attached to the an arm rotatably supported by a rotation axis substantially parallel to the rotation axis of the motor and configured to be able to reciprocate along the rotation axis; and an arm configured to rotate or reciprocate along the rotation axis. A recording/reproducing apparatus having a driving means for