JP3435048B2 - Magneto-optical disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a magnetic field applying means.
Disk drive for recording and reproducing information magneto-optically
It is about. [0002] 2. Description of the Related Art CDs, CD-ROMs, and magneto-optical disks
Reads information recorded on a typical disk-shaped recording medium
Optical disk drive that can write and write information
Means that the storage capacity of those media is
Access is fast,
ing. Furthermore, the disk diameter is small and the disk
The MD (mini-disc) contained in the cartridge is
Replacement with conventional CDs and cassette tapes
In recent years, it has begun to be particularly popular as a medium that can be used. Further, a magneto-optical device is used as an external information recording / reproducing device.
A personal computer with a built-in disk unit (personal computer
Computer), a portable notebook
Type is attracting attention.
Mold type ones are being actively developed. Therefore,
Even in a magneto-optical disk drive where information can be rewritten,
The demand for a thinner device has been further increased. The main structure of a magneto-optical disk drive
As a mechanical part, a cartridge containing a recording medium
When performing recording and reproduction of information with an optical pickup.
Loading mechanism to transport the media,
Spindle motor that rotates at the number of rotations, laser on the medium
Optical pickup and medium for recording and reproducing information by irradiating light
Magnetic field applying means for applying an auxiliary magnetic field to the laser beam focusing position
Step, move the optical pickup to a predetermined position in the radial direction of the medium.
There is an optical pickup feed mechanism for tracking control
You. The magnetic field applying means is, for example, an MD device.
, A resinous slider with a core wound with a coil
-A magnetic head portion made of a member. This magnetic head
Part is attached to the tip of the suspension member having the elastic part.
That slides on the rotating disk.
C) state. This suspension member
Is fixed to the support arm that extends from the optical pickup.
This allows the optical pickup to be integrated
Can be moved in the radial direction of the disc. [0006] The magnetic head section is a magnetic head lifter.
The lowering mechanism moves the disk from the sliding state with the disk.
Above, that is, the distance between the core and the disk surface increases.
In the direction of the
It is possible to be held in a state where it has been escaped
You. [0007] Insert the cartridge into the magneto-optical disk drive
Then, the loading mechanism is used for the cartridge holder.
Hold the cartridge held in the
Move in the direction. At this time, the magnetic head section
To avoid contact with the cartridge coming in,
The magnetic head lift mechanism keeps the cartridge above the cartridge.
Be held. The chucking of the magneto-optical disk is performed.
Of the spindle motor by the loading mechanism
After being transported directly above the chucking section, the cartridge
Is lowered in a direction approaching the spindle motor. S
May have a pindle motor or optical pickup
Cartridge positioning pins are attached to the chassis
The cartridge is positioned by the positioning pin.
It is positioned at a predetermined position. A magneto-optical disk has a center made of a magnetic material.
-Hub mounted, while spindle motor
Near the chucking section of
The net is fixed. The optical disk uses this magnetic attraction
Held on the chucking surface of the spindle motor by force
It is. At this time, it is held above the cartridge.
The magnetic head part was moved by the above-mentioned magnetic head elevating mechanism.
Down on the disc surface. In the above-described magneto-optical disk drive,
Corresponds to the spindle motor fixed to the main chassis.
Need to move the cartridge up and down
Space for this vertical movement is required in the equipment.
You. The size of the cartridge is determined by the magneto-optical
One size larger than the disc, for example, MD
For a disc diameter of 64 mm, the cartridge outer shape is 68 ×
There is a size of 72 mm. Because of this, a very large area
Is required for cartridge loading. In addition, as described above, the cartridge row
Head does not contact the cartridge during loading
So that the magnetic head escapes above the cartridge
Needs additional dimensions in the device thickness direction
Serious problem when trying to reduce the size and thickness of the device body
Becomes Therefore, as described above, the apparatus has been made thinner.
As a method for securing the magnetic head,
Retracted optical pickup out of the movement area of the cartridge
There is a method (hereinafter referred to as method 1) for causing the above. in this way,
Since the magnetic head is retracted above the cartridge,
But not to the position adjacent to the cartridge when viewed from above.
Evacuate. However, in the above-mentioned method 1, the following method is used.
Problem. That is, in order to reduce the thickness of the device,
The distance between the objective lens and the medium for focusing laser light on the body surface
Needs to be set narrow. Therefore, usually
The laser beam so that it can be effectively focused on the medium.
A window is provided, and the objective lens of the optical pickup is
So that it goes into the window of the designated cartridge
Is set to In addition, a pair for controlling the position of this objective lens
Similarly, a part of the object lens actuator enters the window.
It often comes in. Therefore, the cartridge is positioned in the apparatus.
Access to the stored storage media after
Then, move the optical pickup at the retracted position onto the medium.
When the cartridge is closed,
The objective lens and objective lens actuator
Thrust. Therefore, as in method 1, the optical pickup
When the tip is retracted out of the movement area of the cartridge,
The objective lens of the optical pickup is placed in the window in the rear cartridge.
The objective lens and the medium.
The distance between the patient and the body cannot be narrowed, making the device thinner
There is a problem that you can not. Another method for making the device thinner is as follows.
And the method described in JP-A-63-91850 (method
2). In this method, as shown in FIG.
The magnetic head 103 and the optical pickup 102 are
It is configured as a non-integral separate member. 101 is
Spindle motors, 105 and 106 are drive motors, 1
07 is an encoder, 108 is a control circuit, and S101 to S1
05 is a switch. Then, the optical pickup 102
Is controlled by tracking control in the radial direction of the disk 104.
When moving, the magnetic head unit 103 is
Control to move by the same amount as the amount of up 102 movement
are doing. Here, loading the cartridge
Before putting the magnetic head 103 into contact with the cartridge,
To the evacuation position, and complete cartridge loading.
Then, the evacuation is released and the magnetic head unit 103 is
At a position facing the optical pickup 102 with the
Are arranged. In the method 2, unlike the method 1, the optical pickup is used.
The optical pickup is not retracted, so the optical pickup
Part of the cartridge wall that constitutes the
Light pickup in the window in the cartridge.
The top objective lens can be inserted. [0017] SUMMARY OF THE INVENTION
Method 2 has the following problems. That is, the light pick
Light beam spot focused on the disc
Position always fluctuates by tracking position control.
ing. Under such circumstances, recording / erasing of information
To perform recording / erasing by the above magnetic head.
Area (auxiliary magnetic field application area)
It is necessary to exactly match the beam spot position. On the other hand, the above-mentioned auxiliary magnetic field application area is a magnetic head.
Depends on the area of the core (core area) facing the disk.
It has the property to exist. Here, the rise of the applied magnetic field
To improve the characteristics, reduce the inductance of the coil.
To increase the core area
It is not possible. As a result, the auxiliary magnetic field application area is small.
It will be. Therefore, the light beam that fluctuates as described above
The position of the system spot is always
It is necessary to perform the operation accurately in the auxiliary magnetic field application region. This
Therefore, as in method 2, the magnetic head and the optical pickup
When the two parts are configured as separate members, the magnetic head
Is difficult to control the positioning of the optical pickup to the optical pickup
There is a problem. The present invention has been made in view of the above problems.
The purpose is to make the optical pickup of the magnetic head part
The device can be made thin without interfering with
It is an object of the present invention to provide a magneto-optical disk device that can be implemented. [0021] Means for Solving the Problems To solve the above problems,
Therefore, the magneto-optical disk drive according to the first aspect of the present invention has a
Cartridge located at the recording / playback position by moving within the movement area
Irradiate a light beam to the disc in the cartridge
Optical pickup that detects reflected light from
Magnetic field applying means for applying a magnetic field to the disk during erasing
And disposing the cartridge at the recording / reproducing position.
Loading and loading the cartridge into the recording / reproducing position
Unloading to discharge from the device to the outside of the device
Loading means and during loading operation and unloading
During the tuning operation, the magnetic field applying means is
The cartridge to the specified evacuation position outside the movement area of the cartridge.
In a magneto-optical disk drive having switching means
The magnetic field applying means is separated from the optical pickup.
And the switching means is provided for the cartridge.
During loading and unloading,
Separating the field applying means from the optical pickup;
Retract to the retracted position and write to the disc in the cartridge.
At the time of recording, the magnetic field applying means is connected to the optical pickup.
CombineIn addition, the switching means controls the magnetic application
Means for separating from the optical pickup and retracting
The operation of moving to the
DoIt is characterized by: With the above structure, the loading of the cartridge
During loading and unloading,
Means for moving the magnetic field applying means out of the movement area of the cartridge.
Retreat to the retreat position. The direction of this evacuation depends on the cartridge.
Make sure that the direction is parallel to the disk surface,
Can be. Therefore, the magnetic field applying means is
Cartridge movement during loading and unloading
Above the space occupied by
There is no need to move the edge in the thickness direction. That is, the magnetic field
Even if the applying means is moved to retreat, the moving range is
How to move the magnetic field applying means in the magneto-optical disk drive
However, it can be kept within the required thickness. Souyu
In addition, the thickness of the magneto-optical disk device can be reduced. Further, as described above, the cartridge low
When loading and unloading,
The adding means is separated from the optical pickup, and
While retracting to a retracted position outside the movement area of the cartridge, light
The pickup does not move to the evacuation position. That
Optical cartridge when loading of the cartridge is completed.
Backup moves from the retracted position to the disk side
Nothing. Therefore, the optical pickup
When the disc is driven, the
An optical pickup enters the window provided in the cartridge.
Can be set to Therefore, magneto-optical
The disk device can be further thinned. Further, recording on a disk in a cartridge
Sometimes, the switching means switches the magnetic field applying means to an optical pick
Combine with up. Magnetic field coupled with optical pickup
The application means is placed on the disk as the optical pickup moves.
To move. Therefore, the optical pickup of the magnetic head part
There is no hindrance to the alignment control. [0025]Further, according to the above configuration, the loading
Loading means, such as a loading motor,
The magnetic application means is separated from the optical pickup,
the above Move to the evacuation position. Conversely, loadin
The magnetic applying means is in the retracted position.
From the optical pickup. [0026]Therefore, a new dedicated drive such as a motor
Evacuation operation and evacuation of magnetic field applying means without providing means
A release operation can be performed. [0027]Therefore, the evacuation device of the magnetic field applying means is inexpensive.
Structure can be configured. [0028]the aboveThe magneto-optical disk drive has a structure according to claim 1.
In addition to the above, the switching means may include the magnetic field applying means.
With an optical pickup by magnetic attraction by a magnet
CombineSuch a configuration can be adopted. With the above arrangement, the magnetic field applying means is
Coupling with optical pickup by magnetic attraction by net
You. Therefore, a magnetic field can be reliably applied with a very simple configuration.
The means and the optical pickup can be combined. So
Therefore, in addition to the configuration of claim 1, a magneto-optical disk drive
Can be simplified. [0030]the aboveThe magneto-optical disk drive has a structure according to claim 1.
In addition to playback, the loaded disc is
Whether it is a disc for recording or a recordable disc
Detecting means, and the switching means includes
The detection means has detected that the disc is a read-only disc.
In this case, the magnetic field applying unit is kept at the retracted position.
On the other hand, if the disc is a recordable disc,
When the detecting means detects, the magnetic field applying means is turned on by the optical pin.
To the backupYou can also have such a configuration
You. With the above arrangement, the detection means can
The loaded disc is a read-only disc.
Whether the disc is a disc or a recordable disc
You. In the case of a read-only disc, the switching means
Keeps the magnetic field applying means in the retracted position.
As a result, only the optical pickup is
It moves and a reproducing operation is performed. On the other hand, a recordable disc
The switching means, the magnetic field applying means
Is coupled to the optical pickup. As a result,
Backup and the magnetic field applying means are integrally
And the recording / reproducing operation is performed. Therefore, when the disc is a read-only disc,
Optical pickup, which is a member that is controlled for tracking,
The magnetic field applying means does not move in the coupled state.
This greatly reduces the weight of tracking-controlled members.
Can be Therefore, in addition to the configuration of claim 1,
Of the feed motor that controls the tracking of the optical pickup
Power consumption can be greatly reduced. [0033]the aboveThe magneto-optical disk drive has a structure according to claim 1.
In addition to the configuration, the disk facing surface of the magnetic field applying means and the disk
It has separation / contact means for changing the distance from the disk surface,
The switching means replaces the magnetic applying means with the optical pickup.
Operation to separate from the
Performing using the separation / contact meansYou can also have such a configuration
You. According to the above arrangement, the separating means, for example,
An elevating motor or the like is used, and the magnetic application means is
Moved to the retreat position separated from the optical pickup
I do. On the contrary, the above-mentioned separation / contact means is used,
The application means returns from the retracted position, and the optical pickup
Combine with Therefore, a dedicated drive such as a motor is newly added.
Evacuation operation and evacuation of magnetic field applying means without providing means
A release operation can be performed. Therefore, in addition to the structure of the first aspect, inexpensive
Further, a retracting mechanism of the magnetic field applying means can be configured. [0037] DESCRIPTION OF THE PREFERRED EMBODIMENTS [Reference example1] Of the present inventionReference exampleWill be described with reference to FIGS. 1 to 8.
Then, it is as follows. FIG. 1 shows a bookReference exampleMagneto-optical disc device according to the present invention
1 shows a configuration example of a main part of the device. In the following, eachReference example
AndIn the embodiments, when the term “device” is simply used, it is particularly noted.
Unless otherwise noted. Main shear
A disk 1 as a recording medium is rotationally driven in the disk 1.
A spindle motor 2 is provided.
Optical pickup 4 and cartridge positioning pin
5 is provided. The position adjacent to the spindle motor 2
, A resin slider having a core wound with a coil
Magnetic head 6 made of a member, and a suspension pen supporting it
And a magnetic head unit 6 and a suspension pen.
Magnetic field applying means is constituted by the
You. The suspension member 7 is provided with a second support arm.
It is fixed to the room 8. The second support arm 8 has two
Guide holes 9.9 are provided. Main chassis 1
The guide pin support plate 10 is fixed to the
Two second magnetic head guide pins
11.11 are attached. And the above guide
The holes 9.9 are provided with the second magnetic head guide pins 11.
Is engaged. For this reason, the second support arm 8 is
Moves along the second magnetic head guide pins 11
It is possible. From the optical pickup 4, a first support arm is provided.
The arm 12 extends integrally. This first support arm 1
2, two first magnetic head guide pins 13 are provided.
Fixed. First magnetic head guide pins 13
And the second magnetic head guide pins 11 and 11, respectively.
They have the same shaft diameter and are arranged coaxially. The second support arm 8 has a drive pin 1
4 is fixed. Also, on the main chassis 1,
The drive gear 15 is rotatably fixed.
A part of the notch 15 has a notch engaged with the drive pin 14.
The recess 15a is formed. Also, the main chassis 1
A drive motor 16 is fixed on the upper side.
A worm gear 16a is provided on a rotating portion of the motor 16,
The worm gear 16 is provided on the outer periphery of the drive gear 15.
The wheel gear 15b which engages with a is formed. Up
The driving motor 16, the driving gear 15, and the driving pin 14
The switching means is constituted by the above. Further, the magnetic field applying means includes a magnetic field applying means.
The disk facing surface of the step, the magnetic field generating part and the sliding slider
The magnetic head portion 6 which is the
Up or down to touch or separate from the disc surface
The magnetic field applying means elevating mechanism (not shown)
Are combined. Here, the cartridge containing the disc is
When each component is inserted into the magneto-optical disk drive,
The operation will be described with reference to the flowchart shown in FIG. FIG. 2 shows a cart in which the disk 18 is stored.
Immediately before the ridge 17 is inserted into the magneto-optical disk drive
State. Second support arm to which magnetic head unit 6 is fixed
8 is located on the second magnetic head guide pins 11
You. In this position, the cartridge 17 is mounted on the magneto-optical disk.
When the magnetic head unit 6 and the cartridge 1 are inserted into the
7 outside the cartridge insertion area so that
It is an escape position. At this time, the optical pickup 4 is
The outermost circumference position where the outermost circumference of the disk is recorded / reproduced
Optical pickup feeder (not shown)
It is controlled by the structure. In this optical pickup position
The first magnetic element integrated with the optical pickup 4
And the main chassis 1
Second magnetic head guide pin 11.1 integrally fixed
1 and their ends are close together on the same axis. The cartridge 17 is inserted (S11).
At this time, the magnetic head 6 is at the retracted position. In addition,
The backup 4 is located on the outer periphery. Figure 3 shows a cart
The load 17 is inserted into the magneto-optical disk drive.
Indicates the switching state. To cartridge holder (not shown)
The held cartridge 17 is a loading mechanism (not shown).
Toward the inside of the magneto-optical disk drive by the
(Bottom in the figure), horizontal direction, that is, included in the disk surface
Move in the right direction. Here, the thickness of the magneto-optical disk drive is reduced.
If you try to load the cartridge 17
The upper surface position of the
To place the cartridge 6 above the cartridge 17
Can not. Here, the optical pickup 4 is mounted on the disc 1
8 and the magnetic head part 6 is fixed.
The fixed second support arm 8 is, as shown in FIG.
Retreat of the cartridge 17 out of the movement area due to loading
It has been evacuated to the evacuation position. Therefore, this cart
During the loading operation, the cartridge 17 and the magnetic head
There is no contact with the pad portion 6. In the retracted position, the magnetic head
The section 6 is driven by a magnetic head lifting mechanism (not shown).
The upper surface of the air head 6 is approximately the same height as the upper surface of the apparatus.
So that it is held. Thus, the magnetic head
The height of the device due to the protrusion of the part 6 is suppressed.
Can be. Loading is performed (S12). Rodi
The chucking operation causes the chucked portion of the disk 18 to scan.
Conveyed right above the chucking section of pindle motor 2
Then, the cartridge 17 is moved close to the spindle motor 2.
Lower in the direction in which you want Spindle motor 2 or optical pick
The main chassis 1 with the backup 4
The cartridge positioning pin 5 is attached as described above.
And the cartridge 17 is positioned with respect to the cartridge.
The pin 5 is positioned at a predetermined position. Also,
The disk 18 is provided with a center hub 19 made of a magnetic material.
It is attached. On the other hand, the spindle motor 2
Disk chucking magnet 20 near the
The disk 1 is fixed by the magnetic attraction force.
8 is held on the chucking surface of the spindle motor 2
You. When the cartridge 17 is moved downward, that is,
The operation of descending in the direction of the motor 2
Above the cartridge 17, a cartridge for horizontal movement
The height of the upper surface of 17 (h1 in the figure) and the car after descending
Between the height of the upper surface of the cartridge 17 (h2 in the figure)
Then, a space Q accompanying this movement is generated. The drive motor 16 is rotated, and the second support arm
Is moved in the direction of the first support arm 12 (S1).
3). That is, when a current is applied to the drive motor 16,
The above-described war formed on the rotating portion of the drive motor 16
The worm gear 16a rotates and engages with the worm gear 16a.
Drive gear 15 having the above-described wheel gear 15b
It rotates in the direction A in the figure. Then, the drive gear 15 is shaped.
The driving pin 14 engaged with the formed notch 15a is
It is moved with the rotation. This drive pin 14
By the movement, the second support arm 8 moves the second magnetic head guide.
Along the doping pin 11, from the retracted position,
It moves to the direction of the top 4 side. Height of the lower surface of the magnetic head 6
The height is such that it does not come into contact with the upper surface of the cartridge 17 after being lowered.
Is located in the. For this reason, under the cartridge 17
In the space Q after descending, the suspension fixed to the second support arm
The pension member 7 and the magnetic head 6 move. Above
, The first magnetic head guide pins 13
Coaxially with the magnetic head guide pins 11
Since the end portions are configured to be close to each other, the second support
The arm 8 from above the second magnetic head guide pins 11
It moves on the first magnetic head guide pins 13. When the second support arm 8 has the magnetic head 6
At the stop position where it is connected to the pickup 4
(S14), the drive motor 16 is stopped.
(S15). FIG. 4 shows that the magnetic head unit 6
4 shows a state where the optical pickup 4 is coupled to the optical pickup 4. 1st magnetic
Support arm moved onto the guide pins 13
8 is integrally connected with the first support arm 12. Second
The moving direction of the support arm 8 is always the first magnetic head
The connection is restricted by the id pins 13
The positional relationship is always constant, and the auxiliary magnetic field is applied.
The area and the light spot are precisely aligned. FIG. 5 shows the first support arm 12 and the second support arm.
For integrally connecting the arm 8 with the arm 8 as described above.
2 shows a configuration example of a mechanism. The second support arm 8 has a tip
A coupling pin 21 having a notch 21a at a portion is fixed.
ing. On the other hand, the first support arm 12 has the coupling pin
A coupling hole 12a into which the insertion hole 21 is inserted is formed.
The fixing hole fixed to the first support arm 12 is provided in the coupling hole 12a.
A constant spring end 22 is provided. The second support arm 8 is
1 Move on the magnetic head guide pins 13
When it comes to a position where it comes into contact with the holding arm 12, the connecting pin
21 is engaged with the fixed spring end 22.
Combine. Thus, the first support arm 12 and the second support
The holding arm 8 is integrally connected. Next, the optical pickup 4 is moved to the inner circumference of the disk.
(S16). FIG. 6 shows that the magnetic head unit 6
Tracking control is performed integrally with the optical pickup 4.
It shows the state that it is. Light in which the magnetic head 6 is integrally fixed
The pickup 4 is an optical pickup feed mechanism (not shown)
To start recording and playback of information
Move to the inner circumference. Cartridge containing recordable disc 18
A magnetic head insertion window 17 a is provided on the upper surface of the cartridge 17.
Have been. Magnetic head integrated with optical pickup 4
The head part 6 is located in the magnetic head insertion window 17a,
A magnetic head lift mechanism (not shown)
Proximity or contact. As described above, the magnetic head unit 6 and the optical pick
The optical pickup is integrated with the up 4
4 is subjected to tracking control, and the inner and outer circumferences of the disk 18 are controlled.
When moving between, the auxiliary magnetic field application area and the optical switch
The positional relationship with the pot never changes. others
To completely separate the magnetic head 6 and the optical pickup 4
Maintain each positional relationship, which is indispensable if
There is no need for such position control. On the other hand, the cartridge 17 is
The unloading operation to take out of the device
This can be realized by performing the switching operation in reverse. As shown in FIG.
This will be described using a flowchart. That is, the magnetic head
The unit 6 is magnetically driven by a magnetic head unit lifting mechanism (not shown).
The lower surface of the head 6 does not contact the upper surface of the cartridge 17.
(S21). Hand pick
Up 4 is a disk with an optical pickup feed mechanism.
It is located at the outermost periphery (S22 to S24). Soshi
To rotate the drive motor 16 in the reverse direction (S25),
15, a second support connected to the first support arm 12.
The holding arm 8 on the first magnetic head guide pins 13
Moved onto the second magnetic head guide pins 11.
At the end of the second magnetic head guide pin 11.
The magnetic head unit 6 is held at the constant retreat position (S26 to S2).
7). Thereafter, the loading motor is driven (S2
8), raise the cartridge 17 and move it horizontally, and
(S29), and stop the loading motor.
(S30), the unloading operation is completed. [0058]Reference example2] Other of the present inventionReference exampleWill be described with reference to FIG.
It is as follows. In addition, for convenience of explanation,three
ExampleWith the same function as the members shown in the drawing
Are denoted by the same reference numerals and description thereof is omitted. BookReference exampleThenReference exampleAlmost the same configuration as 1
And different parts will be described. As mentioned above
2 The support arm 8 is separated and connected to the first support arm 12.
Although both support arms are connected
Sometimes it is necessary to keep this connection. others
,Reference exampleIn FIG. 1, as shown in FIG.
The connecting pin 21 having the notch 21a at the tip of
A defined structure is used. In contrast, the bookReference example
Then, as shown in FIG.
A magnet 23 is provided on the holding arm 12 and a magnet 23 is provided on the second support arm 8.
Are provided with magnetic bodies for adsorption 24, respectively. Sand
That is, coupling of the first support arm 12 with the second support arm 8
The magnet 23 is fixed to the portion, while the second support arm
The arm 8 is made of a non-magnetic material,
The part opposing the gate 23 is made of a magnetic material such as an iron piece.
Is attached. Supporter
The second support arm 8 is moved by the first support arm
When moved to the position 12, the magnet 23 and the magnetic
Due to the magnetic attraction between the first support arm 1 and the
2 and the second support arm 8 are held. In this way,
By using the magnetic attraction force of the gnet 23,
The first support arm 12 has a simple structure and is always simple.
And the second support arm 8 can maintain the positional relationship. In the embodiment shown here, the first support arm
A magnet for the arm 12 and a magnetic material for the second support arm 8
Although it is provided, of course, both can be interchanged and configured,
Instead of providing a magnetic material, the support arm is made of a magnetic material.
You can do it. [0061]Reference example3] Still another embodiment of the present inventionReference exampleFIGS. 10 to 13
This will be described below. Explanation
For convenience, the aboveReference exampleThe same machine as the members shown in the drawing
Members having the same functions are denoted by the same reference numerals, and the description thereof is omitted.
Abbreviate. In general, information is read from a magneto-optical disk.
There are two types, a read-only disc and a recordable disc.
You. Similarly, in an MD device, a read-only device and a recording / reproducing device are used.
(For both recording and reproduction). In the cartridge
Indicates that the stored disc is a read-only disc for reading information.
Or a recordable disc
An identification means is formed. The identification means has a notch
Presence or notch depth at the notch
Or And the identification sensor provided in the device
To identify which type of disc
It has become. A magnetic field mark as an auxiliary magnetic field applying device
The adding means is a light spot of a laser beam when recording / erasing information.
It applies a magnetic field to the position and is necessary for reproducing information.
Absent. On the other hand, the size and weight of magneto-optical disk
In addition, there is a strong demand for a reduction in power consumed by devices.
To perform tracking control of the optical pickup,
Optical pickup from the inner circumference to the outer circumference of the disc.
Must be moved by the driving force of the feed motor
However, in order to reduce the power consumption of this feed motor,
There is also a demand for a lightweight backup. Here, the bookReference exampleMagneto-optical disc device according to the present invention
In the installation, as shown in FIG.
The identification information for disc identification as described above
Sensor (detection means) 25 is provided. This identification center
The operation using the sensor 25 will be described with reference to the flowchart shown in FIG.
Will be described. That is, first, by the loading operation,
The cartridge 17 (not shown) is moved to a predetermined position in the apparatus.
Pulled in (S31-S32), cartridge positioning
The cartridge 17 is positioned by the pins 5.5.
And the cartridge 1 by the identification sensor 25 provided in the apparatus.
7 is a read-only disc or a recordable disc.
The disc is identified as follows (S33). FIG. 11 shows the operation state of the identification sensor 25.
You. For example, in the case of an MD cartridge, a notch for identification
The read-only disc is stored
The cartridge has a deep cutout 17b. one
On the other hand, the cartridge containing the recordable disc is shallow
It has a notch 17c. Opposite to this notch
Sensor pin 25a of the identification sensor 25 provided at the position
Turns on depending on whether it is pushed in by the notch
Or, it is turned off and disc type is identified. As a result, when the disc is a recordable disc
First, the magnetic head unit 6 in the retracted position is moved to the support arm.
The optical pickup is moved by the movement mechanism of the second support arm 8.
Integrated with the backup 4 (S35-S37),
As shown in FIG.
(S38). The details areReference exampleIt is the same as 1
Description is omitted. On the other hand, the reading sensor is
If the disc is identified as a disc for use (S34),
Do not drive the holding arm moving mechanism and move the magnetic head
The door portion 6 is held at that position. Therefore, light pick
The magnetic head unit 6 is not connected to the up 4, and FIG.
As shown in 2, tracking with the optical pickup 4 alone
Controlled. Here, the magnetic head unit 6 and the suspension
Member 7 and second support arm 8 are optical pickup 4
Are not fixed to the optical pickup 4
Tracking control should be performed compared to the case of combining
The weight of moving parts has been significantly reduced, and tracking control
Power consumption of the optical pickup feed motor
It becomes possible. [Embodiment] Embodiments of the present invention will be described with reference to FIGS.
This will be described below. For convenience of explanation
Above, the aboveReference exampleHas the same functions as the members shown in the drawings.
The same reference numerals are given to the members to be described, and the description thereof will be omitted.
You. The cartridge 17 is drawn horizontally into the apparatus.
The disk 18 is chucked to the spindle motor 2
Loading operation to descend to be
On the contrary, the cartridge 17 in the apparatus is discharged out of the apparatus.
The unloading operation is performed as follows. FIG. 14 shows a machine for holding the cartridge 17.
The cartridge when the cartridge 17 is inserted
It is the figure seen from the back of 17. As shown in the figure, the cart
Plate-shaped cartridge holder for holding ridge 17
At both ends (right end and left end in the figure), cartridges
The bent portions 26a and 26a are
The holder pin 27 is provided at each bent portion 26a.
The cartridge holder 26 and the holder pin are fixed.
27 are integrated. Further, the outermost portion covering the cartridge holder 26
On the circumference, a U-shaped fixed base plate 28 is provided.
At both ends of the base plate 28, bent portions 28a
28a are formed. For each bent portion 28a
15 vertically engages with the holder pin 27, FIG.
The lifting guide groove 28b shown in FIG. Ma
The bent portions 28a of the base plate 28 and the car
Between the bent portions 26a of the cartridge holder 26
Is provided with a movable plate 29, which is engaged with the holder pin 27.
I agree. The above mechanism is generally used as shown in FIG.
Configuration. FIG. 15 shows the mechanism shown in FIG.
From the right side in the figure.
It is to be inserted. The movable plate 29 has an oblique
Guide grooves 29a.
The holder pin 27 is engaged with the groove 29a as described above.
You. Then, as shown in FIG.
17 (not shown), the holder pin 27
It is located above the guide grooves 29a. cart
The ridge holder 26 is integrated with the holder pin 27 as described above.
The cartridge holder 26 (not shown).
) Is also located at the top of the device. After that, manually
Move the cartridge 17 horizontally into the cartridge holder 26
Push in. The cartridge 17 is pushed into the predetermined position.
When it is confirmed that the loading motor
Is rotated, and the movable plate 29 is moved
Move in the opposite direction of the ring. Holder pin 27 is a guide
Engaged with the groove 29a and the elevating guide groove 28b.
When the movable plate 29 moves, as shown in FIG.
The holder pin 27 is suspended along the elevation guide groove 28b.
Descend immediately. Therefore, integrated with the holder pin 27
Cartridge holder 26 and cartridge holder
The cartridge 17 in the holder 26 also descends vertically. this
Thus, the loading operation is completed. In the case of the configuration shown in FIG.
Unloading operation for discharging the cartridge 17 out of the apparatus
The operation is performed by rotating the loading motor (not shown) in reverse.
The movable plate 29 in the state shown in FIG.
That is, move in the direction opposite to the unloading. to this
The holder pin 27 is suspended along the elevation guide groove 28b.
Raise directly. Optical pickup 4 on disk 18
In order to record and reproduce information, the cartridge 17
There is a window and a shutter that covers the window to prevent dust
Is provided. Shutter that opens and closes this shutter
-Due to the spring force of the opening / closing mechanism, the cartridge holder 26
Cartridge 17 is discharged horizontally out of the apparatus.
However, its structure is generally well-known and
A detailed explanation is omitted. Next, in the present embodiment, the above-mentioned
In addition to loading and unloading,
Loading for cartridge loading operation
The retracting operation of the magnetic head unit 6 is performed using the driving force of the motor.
The evacuation release operation is performed. For that
The structure will be described. Note that for simplicity of explanation,
The cartridge holder 26 and the base constituting the
The base plate 28 is omitted, and the explanation is made in relation to the operation of the movable plate 29.
I will tell. FIG. 16 shows an example of the configuration of the above device.
And the state when the cartridge 17 is inserted into the apparatus.
Is shown. FIG. 16C shows FIG. 16B viewed from below in the figure.
Things. FIG. 17 is a diagram in which FIG.
Seen from the direction. As shown in FIG. 16B, the main shear
Loading for moving the movable plate 29 on the sheet 1
Motor (loading means, switching means) 30 is fixed
And the rotating portion at the tip of the loading motor 30
Is formed with a rotary gear 30a. Also, FIG.
As shown in the figure, the upper surface of the movable plate 29 having the
Partially cut in the U-shape to the inside (in the figure, bottom
Side) is provided with a bent portion 29b formed by bending.
Have been. Then, as shown in FIG.
A rack 29c is formed in the portion 29b.
The hook 29c and the rotary gear 30a are engaged. I
Therefore, to rotate the loading motor 30
Thus, the movable plate 29 is moved in the direction E in FIG.
Move in the opposite direction to the ding. As shown in FIG. 16B, the movable plate
On the upper surface of 29, a guide groove 29d is provided. Moth
The id groove 29d is close to the cartridge 17 of the movable plate 29.
Side parallel to the loading direction, in other words, the movable plate 29
Guide groove 29g, which is a portion vacant in parallel with the moving direction of
And the part that is vacant in the diagonal direction following that part
And a guide groove 29h. Further, the lower surface of the movable plate 29 (in the figure,
The slide plate 31 is provided in the right direction. Sura
The id plate 31 has both ends in a direction perpendicular to the movement of the movable plate 29.
And two guide grooves 31a and 3 extending in parallel to that direction.
1a. Here, guide pins are provided on the base plate 28.
The guide grooves 31a are fixed.
In this state, the guide pins 1a
Is located at the end of the guide groove 31a in the + J direction in the figure.
are doing. Therefore, the slide plate 31 is shown in FIG.
From the state, it can be moved only in the + J direction in the figure. Also, one slide plate 31 is provided at the center.
Of the slide guide pin 31b. Slide gadget
The guide pin 31b is inserted into the guide groove 29d of the movable plate 29.
In this state, the guide groove 29d is
In the direction E, that is, at the end in the moving direction of the movable plate 29,
I have. Further, the direction of the slide plate 31 in the direction E in the drawing is shown.
A rack 31c is formed on the side of the end of the rack 31c. here
The connection gear 32 and the drive
The gear 33 is rotatably fixed. Drive gear 33
Drive of the second support arm 8 to which the magnetic head 6 is fixed.
It engages with the moving pin 14 at the notch 33b and rotates.
The drive pin 14 is moved. Above loading
Motor 30, slide plate 31, connecting gear 32, drive gear
A switching means is constituted by the
Has been established. The connecting gear 32 includes a connecting large-diameter gear 32a.
A two-stage gear with the connecting small-diameter gear 32b is formed, and a driving gear
The step 33 has a stepped small-diameter drive gear 33a formed therein.
The connecting large-diameter gear 32a of the connecting gear 32 and the driving gear
The small diameter gear 33a of the arm 33 is engaged. Soshi
The rack 31c and the connecting small diameter gear 32b are engaged with each other.
You. The movable plate 29 and the base according to the present embodiment
The position of the plate 28, the holder pin 27 and the cartridge 17
FIG. 18 shows the positional relationship. It is slightly different from the example of FIG.
ing. The base plate 28 has a vertical guide groove
28b are provided. The movable plate 29 has an inclined portion 29.
e and a guide groove having a horizontal portion 29f that follows.
Have been killed. Then, the cartridge holder 26 (shown in FIG.
), The holder pins 27 fixed to these two
It is engaged with the id groove. As shown in FIG. 18A, the cartridge
17 immediately after the start of insertion, the holder pin 27 is
Positioned above the inclined portion 29e of the guide groove of the moving plate 29,
The cartridge holder 26 is also located at the top of the apparatus.
Will be. At this time, the guide groove of the movable plate 29 is provided.
Of the side parallel to the vertical guide groove 28b
Is F. At this time, as shown in FIG.
The optical pickup 4 is located at the outermost periphery of the disk and has a magnetic head.
The head part 6 is located on the second magnetic head guide pin 11.
It is located at the evacuation position. When the cartridge 17 is in the cartridge holder 2
6, the loading motor shown in FIG.
30, the movable plate 29 is moved in the direction E in FIG.
Let As a result, as shown in FIG.
The rudder pin 27 is attached to the inclined portion 29 e of the guide groove of the movable plate 29.
Descends along the boundary between the inclined portion 29e and the horizontal portion 29f.
Reach. At this point, the cartridge 17 is lowered and
The disk 18 is chucked by the spindle motor 2 and
Loading operation is completed. On the movable plate 29 at this time
Let G be the position of the marked side. At this time, as shown in FIG.
The slide guide pin 3 fixed to the slide plate 31
1b is engaged with a guide groove 29d on the upper surface of the movable plate 29.
However, it is not possible to open in the same direction as the moving direction of the movable plate 29 described above.
The movable plate 29 moves in the guide groove 29g.
Slide guide even if moves from F to G
The pin 31b does not move in the + J direction, and its position is fixed.
Remains intact. Therefore, the drive gear 33 and the like
The magnetic head unit 6 connected via the
Retained. Thereafter, the loading motor 30 is further rotated.
And move the movable plate 29 further in the direction E in FIG.
You. At this time, as shown in FIG.
The rudder pin 27 is in contact with the horizontal portion 29f of the guide groove of the movable plate 29.
Since it is engaged, the position of the holder pin 27, that is,
The position of the loaded cartridge 17 does not change.
No. The movable plate 29 is located at the tip of the base plate 28 (right
End). The position of the side of the movable plate 29 at this time is
H. At this time, as shown in FIG.
The slide guide pin 31b fixed to the
Inside the guide groove 29h inclined with respect to the moving direction of the moving plate 29
Is moved, the movable plate 29 moves from G to H
The slide guide pin 31b moves in the + J direction
, So that the slide plate 31 moves in the + J direction.
You. And it was provided on the slide plate 31 as described above.
The coupling gear 32 engaged with the rack 31c rotates, and
Then, the drive gear 33 rotates in the direction A in the figure. Drive gear 3
The drive pin engaged with the notch 33b formed in
The pin 14 is moved with its rotation,
14, the second support arm 8 moves the second magnetic head.
Guide pin 11, first magnetic head guide pin 1
From the retracted position to the optical pickup 4 side along 3 ・ 13
And the first and second support arms are connected to each other. Magnetic Head Coupled to Optical Pickup 4
To move the unit 6 to the predetermined retracted position, the above operation is reversed.
You can go to That is, the magnetic head unit 6 is not shown.
The lower surface of the magnetic head 6 is moved by the
Raise it to a position where it does not touch the top of the cartridge 17
The optical pickup 4 is used as an optical pickup feed mechanism.
Therefore, it is located at the outermost periphery of the disk. Loading
The movable plate 29 is moved from the position H to the position G by rotating the motor 30 in the reverse direction.
The slide plate 31 moves in the -J direction.
Moving. Then, the first support arm 12 coupled to the first
2 Support arm 8 is connected via connecting gear 32 and drive gear 33
The second magnetic head from above the first magnetic head guide pins 13.
The magnetic head guide pins 11 are moved over the
To the predetermined retracted position at the end of the air head guide pins 11
The magnetic head unit 6 is held. After that, the movable plate 29 is
Moving from position to position F (see FIG. 19)
As a result, the position of the holder pin 27 rises, and
The ridge 17 is also raised. And the cartridge 17
Discharged horizontally out of the device, unloading operation
Complete. As described above, the retracting operation and the retracting operation of the magnetic field applying means are performed.
The evacuation release operation is performed by drawing the cartridge 17 into the apparatus.
Alternatively, loading / unloading to discharge from inside the device
Performing with loading motor 30 which performs loading operation
A new motor for retracting the magnetic head
Eliminates the need to construct a magnetic head retracting mechanism at low cost
be able to. [Reference example 4] Still another embodiment of the present inventionReference exampleFIG. 21 to FIG.
This will be described below. Explanation
For convenience, the aboveReference examples andShown in the drawings of the embodiment.
Members that have the same functions as those of
The description is omitted. In the case of a recordable magneto-optical disk,
However, it is rare that only the recording operation is performed at all times.
The time for reading the recorded information is long. Emotion
At the time of recording information, the surface of the magnetic head unit 6 facing the disk,
Magnetic field generator and sliding slider are close to the disk surface
Or it is in contact. When the recording of information is completed,
The head-facing surface of the head 6 facing the disk
If the magnetic head 6 and the disk 18 are close to each other,
Risk of damage due to collision with
If the disc 18 is rotating,
Load applied to the spindle motor 2
The power consumed by the motor 2 increases. Because of this,
The magnetic head 6 is close to the disk surface only during recording
Or when the recording is completed,
The evacuation method is often adopted. This magnetic head
The raising and lowering operation for raising and lowering the position of the section 6
In general, a lifting motor is used to drive the lifting mechanism.
Used as a power source. FIG. 21 shows a cartridge loading operation.
The magnetic field applying means is separated from the optical pickup 4
Release to the retracted position outside the movement area of the cartridge 17
Evacuation operation or optical pickup from the evacuation position
The operation for coupling to the step 4 is performed by
Configuration using data (separation / contact means, switching means) 35
An example is shown. Here, the cartridge 17 is
Loading mechanism (not shown)
Is placed. The magnetic head 6 located at the retracted position
A lifting arm (separating hand)
Step) 34 is formed. The lifting arm 34 is
Withdrawal from the inner circumference of the disk, which is the movable range of the air head unit 6.
Formed over the location. And the lifting arm 3
Reference numeral 4 denotes a suspension member 7 of the magnetic head 6
From the suspension part
The material 7 can be slid in the longitudinal direction. And in the figure
As shown, the lifting arm 34 is
Near the center of the material 7 and the magnetic head 6
From the position in which it is floating from the carriage 17
As shown in FIG.
Can slide only in the direction toward the base of the pension member 7
Noh. The height of the lower surface of the magnetic head 6 is shown in FIG.
When not in contact with the top of cartridge 17
It is set to be. The main chassis 1 is provided with
Tab 35 is fixed. Also, on the main chassis 1
Is provided with a first slide plate 36 parallel to the disk surface.
ing. The first slide plate 36 has four guide grooves 3
6b, 36b, 36c and 36d. Two guide grooves
36b and 36b are both slides of the lifting arm 34.
It is a straight line perpendicular to the moving direction, and is fixed on the main chassis 1.
Fixed two guide pins 1b are engaged with these.
You. By this engagement, the first slide plate 36 slides in the + L direction.
That is, the transfer is performed in a predetermined direction parallel to the guide grooves 36b.
It is possible to move. As in this case, the magnetic head
The cartridge 6 is in the retracted position and the cartridge 17
When the first slide plate 36 is at a position higher than the upper surface,
The position of the end opposite to the + L direction is N. Also,
The guide groove 36c is a portion parallel to the guide grooves 36b.
And an oblique portion located at the end in the + L direction.
You. Also, the guide groove 36d is provided with the guide grooves 36b.
At the end in the direction opposite to the + L direction
And an oblique part. Further, as shown in FIG.
At the upper end of the ride plate 36 in the drawing, a rack 36a is provided.
The rack 36a is formed with the elevating motor
35 and a rotating gear 35a. FIG. 22 (a)
FIG. 2 shows a portion of the elevating motor 35 in the above configuration shown in FIG.
FIG. 22B is a view from the left side of FIG.
(A) as viewed from the right side, in other words, for lifting up and down in FIG.
The motor 35 is enlarged. Further, as shown in FIG. 21, the first slide
The main chassis 1 below the plate 36 is provided with a lifting arm 34.
Guide groove 1c in the sliding direction (+ K, -K direction)
Are formed. Then, the right side of the lifting arm 34 in the drawing
A drive pin 34a is fixed to the end of the drive.
The moving pin 34a is connected to the guide groove 3 of the first slide plate 36.
6d and the guide groove 1c of the main chassis 1
Is engaged. On the other hand, the left end of the lifting arm 34 in the drawing
Guide groove in the sliding movement direction of the lifting arm 34
34b are formed and fixed on the main chassis 1.
The guide pins 1d are engaged with the guide grooves 34b.
are doing. Therefore, the movement of the lifting arm 34 is in the −K direction.
And + K only. And in the figure
As shown, the guide pin on the + K direction end side of the two
1d is located at the end of the guide groove 34b in the + K direction.
It is in a state. Therefore, from this state,
The arm 34 is movable only in the + K direction. On the other hand, the second slide plate 36
A slide plate 37 is provided. The second slide plate 3
7, two guide pins 37a are fixed.
I have. The main chassis 1 has the guide pins 37a
37a, two guide grooves 1 in the -K and + K directions.
e · 1e is formed. The above two guide pins 37
a (a lower side in the figure) of this main system
It is engaged with only one guide groove 1e of the chassis 1. Also
The other (upper side in the figure) is the
Guide groove 36c and the other guide groove 1 of the main chassis 1
e. And as shown in the figure
And two guide pins 37a, 37a
・ It is in a state of being located at the + K end of 1e
You. Therefore, from this state, the second slide plate 3
7 is movable only in the -K direction. Further, the left side of the second slide plate 37 in the drawing
A rack 37b is formed on the side of the side end. This
Here, the connecting gear 32 and the drive
The moving gear 33 is rotatably fixed. Connecting gear 32
Has two stages of a connecting large diameter gear 32a and a connecting small diameter gear 32b.
A gear is formed. The drive gear 33 has a stepped drive
A moving small diameter gear 33a is formed. The drive small diameter gear 3
3a and the connecting large-diameter gear 32a, the connecting small-diameter gear 32b and the second
The racks 37b of the slide plates are engaged with each other.
The drive gear 33 has a second support to which the magnetic head 6 is fixed.
The drive pin 14 of the holding arm 8 is engaged. For lifting above
Motor 35, first slide plate 36, second slide plate 3
7, connecting gear 32, drive gear 33, and drive pin 14
The switching means is constituted by the above. The magnetic head unit 6 having the above configuration
Will be described. The lifting motor 35 is rotated in the direction M in the drawing.
Then, the engaged first slide plate 36 has an end portion thereof.
Slide in the + L direction. Then, as shown in FIG.
The driving plate 34 is fixed to the lifting arm 34
a is a bent guide groove 36 on the first slide plate 36
Move to the position where it reaches the bent part of d
You. At this point, the drive pin fixed to the lift arm 34
Guide groove of the first slide plate 36 engaged with the
36d is in the same direction as the sliding direction,
The drive pin 34a of the arm 34 does not move in the + K direction,
The position does not change. Therefore, the lift arm 34
The magnetic head unit 6 from which the spence member 7 is lifted
I keep it as it is. In addition, as in this case
Then, the magnetic head unit 6 is released and the cartridge
First slide when it is at a position higher than the upper surface of
The position of the end of the plate 36 opposite to the + L direction is O. On the other hand, as described above, the state shown in FIG.
While moving to the state of No. 3, the guide groove of the first slide plate 36
36c, fixed to the second slide plate 37
The guide pin 37a is formed at an oblique portion of the guide groove 36c.
Move in the -K direction along the slope.
Move. As a result, the second slide plate 37 moves in the −K direction.
, The rack 37 formed at the end thereof
b, the connection gear 32 engaged therewith rotates, and
The drive gear 33 rotates in the A direction. The drive gear 33 has a shape
The drive pin 14 engaged with the formed notch 33b
Is moved with the rotation, and the drive pin 14 is moved.
The second support arm 8 moves the first and second magnetic heads.
Is moved in the direction of the optical pickup along the guide pin,
The first support arm 12 and the second support arm 8 are connected
You. At this time, the magnetic head 6 is moved by the lifting arm 34.
Hold the cartridge 17 at a position where it does not contact the surface of the cartridge 17.
Because it remains raised, it can be moved from the evacuation position.
In this case, there is no contact with the cartridge 17. FIG. 24 shows that the magnetic head section 6 is
With the disc integrally connected to the pickup 4,
The state shown in the inner peripheral part is shown. Here, slide 1
The plate 36 is at the same position O as in FIG.
Is still lifted upward by the lifting arm 34
I have. In this state, the information is reproduced by the optical pickup 4.
If done, the danger of collision between the magnetic head 6 and the disk 18
Spindle motor by maintaining the contact state
2 can be reduced. At the time of recording / erasing information, the magnetic head 6
Must be lowered toward the disk. As shown in FIG. 25, the lifting motor 35 is
Rotate further to expose the end of the first slide plate 36
Move to Then, the drive fixed to the lift arm 34
The moving pin 34a is inclined by the guide groove 36d of the first slide plate.
It is moved in the + K direction along the slope. As a result,
When the arm 34 slides in the + K direction, the magnetic head
Lifting and restraining suspension member 7 of 6
State is released, and the magnetic head 6
It descends toward the surface of the disc 18. In addition, as in this case
Then, the magnetic head unit 6 is released and the disk 1
Of the first slide plate 36 when descending toward the surface
The position of the end opposite to the + L direction is P. At this time, it is fixed to the second slide plate 37.
The guide pin 37a is in the latter half of the guide groove 36c.
Formed in the same direction as the moving direction of the first slide plate 36.
Guide pin 37a is + K
It does not move in the direction and its position remains fixed.
Therefore, the connecting gear 32 and the driving gear 33 also rotate.
Absent. Magnetic Head Coupled to Optical Pickup 4
To move the unit 6 to the predetermined retracted position, the above operation is reversed.
You can go to That is, the lifting motor 35 is rotated in the reverse direction.
And the end of the first slide plate 36 is moved from position P to position O
By moving the magnetic head unit 6 up to
Position where the lower surface of the part 6 does not contact the upper surface of the cartridge 17
Up to Then, the optical pickup 4 is
Positioned at the outermost periphery of the disc by the pickup feed mechanism
Let it. The lifting motor 35 is further rotated in the reverse direction,
Move the end of the ride plate 36 from the position O to the position N.
The second slide plate 37 slides in the + K direction.
And a second arm coupled to the first support arm 12
The support arm 8 is connected via a connecting gear 32 and a driving gear 33.
The second magnetic head from above the first magnetic head guide pins 13.
The magnetic head guide pins 11 are moved over the
To the predetermined retracted position at the end of the air head guide pins 11
The magnetic head unit 6 is held. As described above, the retracting operation and the retracting operation of the magnetic field applying means are performed.
The evacuation release operation is a driving source of the elevating mechanism of the magnetic field applying means.
By using the lifting motor 35, a new magnetic head
There is no need to provide a motor for retracting
A head retracting mechanism can be configured. [0109] As described above, according to the first aspect of the present invention,
Magneto-optical disk drives move within the movement area of the
To the disc in the cartridge located at the recording / playback position
Irradiate a light beam to detect the reflected light from the disk
Optical pickup and the above disc when recording / erasing information.
Magnetic field applying means for applying a magnetic field to the cartridge, and the cartridge
To the recording and playback position
Eject the cartridge from the recording / reproducing position
Loading means for unloading and loading
During loading and unloading operations,
Moving the cartridge in the apparatus and moving the cartridge
Switching means for retreating to a predetermined retreat position outside the area.
The magnetic field applying means.
Can be separated and combined with the optical pickup,
The switching means is used when loading the cartridge and
During unloading, the magnetic field applying means
Separate from the pickup and retreat to the retreat position,
When recording on the disc in the cartridge,
Adding means to the optical pickup.Along with
The switching means connects the magnetic applying means to the optical pickup.
Operation to separate from the top and move to the retreat position
Is performed using the above loading means.Configuration. Therefore, the optical pickup of the magnetic head portion
The device can be thinned without interfering with the alignment control.
This has the effect of being able to be molded.In addition, inexpensively, magnetic fields
The effect that the retracting mechanism of the application means can be configured
To play. [0111]the aboveThe magneto-optical disk drive has a structure according to claim 1.
In addition to the above, the switching means may include the magnetic field applying means.
With an optical pickup by magnetic attraction by a magnet
Configuration to be combinedCan also be. Therefore, in addition to the effects of the structure of claim 1,
In addition, the configuration of the magneto-optical disk drive can be simplified.
It has the effect of cutting. [0113]the aboveThe magneto-optical disk drive has a structure according to claim 1.
In addition to playback, the loaded disc is
Whether it is a disc for recording or a recordable disc
Detecting means, and the switching means includes
The detection means has detected that the disc is a read-only disc.
In this case, the magnetic field applying unit is kept at the retracted position.
On the other hand, if the disc is a recordable disc,
When the detecting means detects, the magnetic field applying means is turned on by the optical pin.
Configuration to be linked to the backupIt can also be. Therefore, in addition to the effects of the configuration of claim 1,
In addition, a feed mode that controls the tracking of the optical pickup
Data power consumption can be greatly reduced
To play. [0115]the aboveThe magneto-optical disk drive has a structure according to claim 1.
In addition to the configuration, the disk facing surface of the magnetic field applying means and the disk
It has separation / contact means for changing the distance from the disk surface,
The switching means replaces the magnetic applying means with the optical pickup.
Operation to separate from the
Configuration performed by using the separating / contacting meansIt can also be. Therefore, in addition to the effect of the first aspect,
In addition, it is necessary to construct the retreat mechanism of the magnetic field applying means at low cost
This has the effect that it can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a main part of a magneto-optical disk drive according to a reference example of the present invention, where (a) is a side view,
(B) is a top view, and (c) is a front view near the first and second support arms. FIGS. 2A and 2B show a state before a cartridge is inserted in the magneto-optical disk device, wherein FIG. 2A is a side view, FIG. 2B is a top view, and FIG. 2C is a front view near the first and second support arms. is there. FIGS. 3A and 3B show a state in which a cartridge is inserted in the magneto-optical disk device, where FIG. 3A is a side view, FIG. 3B is a side view near an optical pickup, FIG. 3C is a top view, and FIG.
FIG. 4 is a front view near the first and second support arms. FIG. 4 shows a state in which a magnetic head unit and an optical pickup in the magneto-optical disk device are combined;
(A) is a top view, (b) is a front view near the first and second support arms. FIGS. 5A and 5B are cross-sectional views illustrating a configuration of a coupling mechanism between a magnetic head unit and an optical pickup. FIGS. 6A and 6B show a state in which the magnetic head unit and the optical pickup in the magneto-optical disk device are integrally controlled. FIG. 6A is a top view, and FIG. 6B is a view near the first and second support arms. It is a front view. FIG. 7 is a flowchart illustrating a loading operation of the cartridge. FIG. 8 is a flowchart showing an unloading operation of the cartridge. FIGS. 9A and 9B are cross-sectional views illustrating a configuration of a coupling mechanism between a magnetic head unit and an optical pickup in a configuration example of another reference example of the magneto-optical disk device according to the present invention. FIG. 10 is a plan view showing a configuration of a main part and an arrangement of an identification sensor in still another reference example of the magneto-optical disk device according to the present invention. FIGS. 11A and 11B are cross-sectional views illustrating an operation state of the identification sensor. FIG. 12 is a plan view showing a state where the optical pickup in the magneto-optical disk device is controlled by itself. FIG. 13 is a flowchart showing a movement operation of a magnetic head unit and an optical pickup when an identification sensor is used. FIG. 14 is a sectional view showing a loading operation and an unloading operation mechanism. FIGS. 15A and 15B are plan views showing a loading operation and an unloading operation. FIG. 16 shows a state before a cartridge is inserted in a configuration example of the magneto-optical disk device according to the present invention;
(A) is a side view, (b) is a top view, (c) is a front view near the movable plate. FIG. 17 is a plan view showing an engagement state between a rack and a rotary gear. FIGS. 18A to 18C are plan views showing a loading operation and an unloading operation. FIG. 19 is a plan view showing a state in which a cartridge is inserted in the magneto-optical disk device. FIG. 20 is a plan view showing a state where the magnetic head unit and the optical pickup in the magneto-optical disk device are combined. FIGS. 21A and 21B are diagrams showing a state when a cartridge is inserted in a configuration example of still another reference example of the magneto-optical disk device according to the present invention, wherein FIG. 21A is a side view and FIG. FIGS. 22A and 22B are plan views showing an engaged state between a rack and a rotary gear. FIG. 23 is a plan view showing a state where the magnetic head unit and the optical pickup in the magneto-optical disk device are combined. FIG. 24 is a plan view showing a state where a magnetic head unit in the magneto-optical disk device is lifted. FIGS. 25 (a) and 25 (b) show a state in which the magnetic head portion of the magneto-optical disk device is lowered in the medium direction, where FIG. 25 (a) is a side view and FIG. 25 (b) is a top view. . FIG. 26 is a block diagram showing a main part of a conventional magneto-optical disk device. [Description of Signs] 1 Main chassis 1b Guide pin 1c Guide groove 1d Guide pin 1e Guide groove 2 Spindle motor 3 Guide member 4 Optical pickup 5 Cartridge positioning pin 6 Magnetic head part (magnetic field applying means) 7 Suspension member (magnetic field applying means) 8 second support arm 9 guide hole 10 guide pin support plate 11 second magnetic head guide pin 12 first support arm 12a coupling hole 13 first magnetic head guide pin 14 drive pin (switching means) 15 drive gear (switching means) 15a Notch 15b Wheel gear 16 Drive motor (switching means) 16a Worm gear 17 Cartridge 17a Magnetic head insertion window 17b Notch 17c Notch 18 Disk 19 Center hub 20 Disk chucking magnet 21 Coupling pin 21a Notch portion 22 Fixed spring end portion 23 Magnet 24 Attraction magnetic body 25 Identification sensor (detection means) 25a Sensor pin 26 Cartridge holder 26a Bending portion 27 Holder pin 28 Base plate 28a Bending portion 28b Elevating guide groove 29 Movable plate 29a Guide groove 29b Bend Part 29c Rack 29d Guide groove 29e Inclined part 29f Horizontal part 29g Guide groove 29h Guide groove 30 Loading motor (loading means, switching means) 30a Rotating gear 31 Slide plate (switching means) 31a Guide groove 31b Slide guide pin 31c Rack 32 Connection gear (Switching means) 32a connecting large-diameter gear 32b connecting small-diameter gear 33 drive gear (switching means) 33a driving small-diameter gear 33b cutout portion 34 elevating arm (separating means) 34a drive pin 34b guy Guide groove 35 Lifting motor (separating / contacting means, switching means) 35a Rotating gear 36 First sliding plate (switching means) 36a Racks 36b, 36c, 36d Guide groove 37 Second sliding plate (switching means) 37a Guide pin 37b Rack

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-167194 (JP, A) JP-A-8-17089 (JP, A) JP-A-5-20809 (JP, A) 325521 (JP, A) JP-A-60-251541 (JP, A) JP-A-3-80502 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 21/00-21 / 06 G11B 11/105 G11B 17/04

Claims (1)

(57) [Claim 1] A light beam is applied to a disk in a cartridge arranged at a recording / reproducing position by moving within a moving area in the apparatus to detect reflected light from the disk. An optical pickup, a magnetic field applying means for applying a magnetic field to the disk at the time of recording / erasing information, loading for placing the cartridge at the recording / reproducing position, and unloading of the cartridge from the recording / reproducing position to the outside of the apparatus. A magneto-optical disk drive comprising: loading means for performing loading; and switching means for retracting the magnetic field applying means to a predetermined retracted position inside the apparatus and outside the movement area of the cartridge during a loading operation and an unloading operation. In the above, the magnetic field applying means can be separated / coupled with the optical pickup; When the cartridge is loaded and unloaded, the magnetic field applying means is separated from the optical pickup and retracted to the retracted position, and when recording on a disc in the cartridge, the magnetic field applying means is While being coupled to an optical pickup , the switching means switches the magnetic applying means to the optical pick-up.
Operation to separate from up and move to the retracted position
Using the above loading means .