JPH05182270A - Magneto-optical recording and reproducing device - Google Patents

Abstract

PURPOSE:To provide the magneto-optical recording and reproducing device which can protect a magnetic head from an operator's inadvertent contact. CONSTITUTION:A cartridge holder 21 for holding a cartridge is provided turnably around a holder turning shaft 22a and a magnetic head arm 12 for holding the magnetic head 11 is provided turnably around an arm turning shaft 13. The holder turning shaft 22a and the arm turning shaft 13 are non-coaxially disposed so that the magnetic head 11 is housed between the cartridge holder 21 and a cover 31 and is deviated from an aperture for the magnetic head when the cover 31 is opened. Thus, the magnetic head is housed to the rear side of the cartridge holder when the cover is opened and, therefore, the magnetic head is protected from the operator's inadvertent contact and the position deviation and failure of the magnetic head are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-optical recording / reproducing apparatus for recording / reproducing information on / from a cartridge containing a magneto-optical recording medium such as a magneto-optical disk, and more particularly to a magneto-optical recording / reproducing apparatus which is operated by an operator while waiting for insertion of the cartridge. The present invention relates to a magneto-optical recording / reproducing device capable of protecting a magnetic head from contact.

[0002]

2. Description of the Related Art A magneto-optical recording / reproducing apparatus records information by focusing and irradiating a recording medium with a light beam by an optical head and applying a magnetic field by the magnetic head. Here, the optical head and the magnetic head are accurately aligned with each other. Therefore, when the recording medium is mounted on the rotary drive means or ejected from the rotary drive means, the contact between the cartridge and the magnetic head may cause displacement and damage of the magnetic head. It is necessary to move the magnetic head to escape so as to prevent contact.

A conventional magneto-optical recording / reproducing apparatus is disclosed in, for example, Japanese Patent Application Laid-Open No. 2-281444. In this proposal, a cartridge holder that holds a cartridge in which a disk is housed in a device and a cover that is a part of a housing are integrated, and the cover is opened and closed to insert the cartridge between an insertion position and a mounting position. I am going to transfer it. Then, when the cover is opened and the cartridge is inserted, the magnetic head is fixed to the cover so that the cartridge and the magnetic head do not come into contact with each other.

[0004]

However, in the above-described conventional magneto-optical recording / reproducing apparatus, the magnetic head is exposed when the cover is opened to insert the cartridge, and therefore the operator mistakenly operates the magnetic head. May touch
As a result, the position of the magnetic head may be displaced or damaged.

It is an object of the present invention to provide a magneto-optical recording / reproducing apparatus which solves the above-mentioned problems of the prior art and can protect the magnetic head from the tentacle of the operator.

[0006]

In order to achieve the above object, according to the present invention, a first magnetic head arm for holding a magnetic head for applying a magnetic field to a recording medium is rotatably supported.
The arm rotation shaft, which is the rotation shaft, and the holder rotation shaft, which is the second rotation shaft that rotatably supports the cartridge holder that holds the cartridge in the apparatus, are provided. Further, an arm rotating mechanism for rotating the magnetic head arm in a direction in which the magnetic head approaches or separates from the recording medium, an insertion position where the cartridge is inserted into the cartridge holder, and an attachment position where the cartridge is attached to the cover. And a holder rotating mechanism for rotating between the two. In the first embodiment, the arm rotation shaft and the holder rotation shaft are arranged parallel to the moving direction of the optical head and the magnetic head, and the arm rotation shaft and the holder rotation shaft are not coaxial. Placed in.

Further, in the second embodiment of the present invention, the holder rotating shaft is arranged perpendicularly to the transfer direction of the optical head and the magnetic head, and the arm rotating shaft is arranged inclined with respect to the holder rotating shaft. did.

[0008]

When the cover is opened, the magnetic head arm is rotated about the arm rotation axis by the magnetic head rotation mechanism in the direction in which the magnetic head is separated from the recording medium. As a result, the magnetic head rises, is ejected from the magnetic head opening of the cartridge holder, and is housed between the cartridge holder and the cover. Thereafter, the cartridge holder is rotated by the holder rotating mechanism around the holder rotating shaft toward the cartridge insertion position. Then, when the cover is fully opened, the cartridge holder is held at the insertion position where the cartridge can be inserted. The magnetic head is housed between the cartridge holder and the cover. Further, since the arm rotating shaft and the holder rotating shaft are not coaxial, the locus of the magnetic head is different from that of the magnetic head opening of the cartridge holder. It is stored.

When the cover is closed, the magnetic head arm is rotated by the magnetic head rotating mechanism in the direction in which the magnetic head approaches the recording medium. As a result, the magnetic head moves down. The cartridge holder is rotated toward a predetermined cartridge mounting position by the holder rotating mechanism and is held at the cartridge mounting position. The magnetic head is further lowered after the cartridge holder stops at a predetermined cartridge mounting position, and inserted into the magnetic head opening. Then, the magnetic head is positioned at a position where recording is possible on the recording medium. As a result, recording and reproduction are possible.

As described above, since the arm rotating shaft which is the first rotating shaft and the holder rotating shaft which is the second rotating shaft are not coaxial with each other, the movement loci of the cartridge holder and the magnetic head are different. Therefore, the magnetic head can be housed on the back side of the cartridge holder, and it is easy to prevent the operator from contacting the magnetic head. Therefore, the displacement or damage of the magnetic head can be prevented and the magnetic head can be protected.

[0011]

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

First, a first embodiment of the present invention will be described in detail with reference to FIGS. 1, 2, 3, 4, 5, and 6.
FIG. 1 is a perspective view showing the configuration of a first embodiment of a magneto-optical recording / reproducing apparatus according to the present invention, showing a state during standby for cartridge insertion. FIG. 2 is a perspective view showing the cartridge holder of the same embodiment, FIGS. 3 and 4 are operation explanatory views when the cover of the same embodiment is opened, and FIGS. 5 and 6 are operation explanations when the cover of the same embodiment is closed. It is a figure.

First, the configuration of this embodiment will be described with reference to FIGS. Reference numeral 1 is a cartridge in which a disk 2 which is a recording medium is stored. At the center of the disc 2, a hole 2 for fitting with a rotation driving means 3 described later.
a is provided. Further, the cartridge 1 is provided with a magnetic head opening 1a into which a magnetic head described later is inserted, an optical head 8 and an optical head opening 1b into which the rotation driving means 3 is inserted. The cartridge 1 shown in FIG. 2 is an example, and only the minimum requirements are shown, but other than this, for example, a cartridge provided with a dustproof shutter can be applied.

Reference numeral 3 denotes a rotation driving means for rotating the disk 2, which is fixed to the chassis 4. Reference numeral 5 denotes a carriage, which is guided by shafts 6a and 6b fixed to the chassis 4 and is movable in the radial direction of the disk 2 (direction of arrow A), and its movement is controlled by an access mechanism (not shown). Further, the carriage 5 has an objective lens 8
An optical head 8 for recording information on the disc 1 and reproducing the recorded information is mounted.

A magnetic head 11 applies a magnetic field to the disk 2 during recording. Reference numeral 12 denotes a magnetic head arm, which holds the magnetic head 11 across the disk 2 at a position facing the objective lens 8a during recording. An arm rotating shaft 13 is attached to the magnetic head arm 12 in a direction parallel to the moving direction of the carriage 5. The arm rotating shaft 13 is a bearing portion 14a of the carriage 5,
The magnetic head arm 12 is rotatably held by 14b, and the magnetic head arm 12 is rotatable about an arm rotation shaft 13. The magnetic head arm 12 is urged by a spring (not shown), and is stopped by a stopper (not shown) when the cover 31 is closed to position the magnetic head 11 at a recordable position on the disk 2. There is.

A cartridge holder 21 holds the cartridge 1 in the apparatus. Cartridge holder 21
The holder rotation shafts 22a and 22b are attached to the holder in a direction parallel to the moving direction of the carriage 5.
It is rotatably held by bearings 23a and 23b fixed to the chassis 4. Further, a magnetic head opening 21a into which the magnetic head 11 is inserted is provided in the cartridge holder 21.
And the notch 2 for preventing the interference with the optical head 8.
1b is provided. The cartridge holder 21 is biased by a spring (not shown) and is held at the mounting position by a stopper (not shown) when the cover 31 is closed.

Reference numeral 31 is a cover which is a part of the housing 34, and the cover 31 has a cover rotating shaft 33.
It is attached in a direction parallel to the moving direction of. The cover rotating shaft 33 is rotatably held by the bearing portion 35 of the carriage 34, and the cover 31 is rotatable around the cover rotating shaft 33.

An arm lifter 36 as a magnetic head rotating mechanism is fixed to the cover 31. Cover 3
When opening 1, the arm lifter 36 engages with the magnetic head arm 12, rotates the magnetic head arm 12 in the direction of arrow C, and lifts the magnetic head 11 away from the disk 2. When the cover 31 is closed, the arm lifter 36 supports the magnetic head arm 12, and the magnetic head arm 12 rotates in the direction of arrow D in conjunction with the arm lifter 36, and the magnetic head 11 descends so as to approach the disk 2. Let

Reference numeral 37 denotes a holder lifter as a holder rotating mechanism, which is fixed to the cover 31. When opening the cover 31, the holder lifter 37 moves the cartridge holder 2
1, and the cartridge holder 21 is rotated in the direction of arrow C to hold the cartridge holder 21 at the cartridge insertion position where the cartridge 1 can be inserted. Then, when the cover 31 is closed, the holder lifter 37 is rotated in the direction of arrow D while supporting the cartridge holder 21.

Next, the operation of this embodiment will be described.

First, the operation of opening the cover 31 will be described with reference to FIGS. 3 and 4 show the operation of opening the cover as seen from the moving direction of the carriage 5. FIG. 3 (a) shows the state in which the cover 31 is closed, and FIG. 3 (b) shows the arm lifter 36. The state where the cover 31 is opened until the magnetic head arm 12 and the magnetic head arm 12 come into contact with each other,
4C shows a state in which the cover 31 is opened until the holder lifter 37 and the cartridge holder 21 come into contact with each other, FIG. 4A shows a state in which the cover 31 is further opened, and FIG.
1 shows a state in which 1 is fully opened.

When the cover 31 is closed, FIG.
As shown in (a), the cartridge holder 21 is held at the mounting position by a stopper (not shown). The magnetic head arm 12 is positioned at a predetermined position by a stopper (not shown). As a result, the magnetic head 11 is positioned at a recordable position on the disk 2.
At this time, a part of the magnetic head 11 is provided with a magnetic head opening 21.
The arm lifter 36 is separated from the magnetic head arm 12, and the holder lifter 37 is separated from the cartridge holder 21. The cartridge 1
If is inserted, the disc 2 can be recorded and reproduced in this state.

When the cover 31 starts to open from the state of FIG. 3A and the cover 31 starts to rotate in the direction of arrow C,
The arm lifter 36 engages with the magnetic head arm 12 as shown in FIG. The holder lifter 37 and the cartridge holder 21 are still separated from each other. After that, FIG. 3 (c)
As shown in FIG.
Engage with 1. The magnetic head arm 12 is an arm lifter 3
6 starts rotating in the direction of arrow C about the arm rotating shaft 13 and the magnetic head 11 is ejected from the magnetic head opening 21a of the cartridge holder 21.
It is housed between 1 and the cover 31. Further cover 31
4A, the cartridge holder 21 is rotated by the holder lifter 37 in the arrow C direction about the holder rotation shafts 22a and 22b as shown in FIG. 4A. The magnetic head arm 12 rotates in the direction of arrow C about the arm rotation shaft 13.

At this time, since the cartridge holder 21 and the magnetic head arm 12 have different centers of rotation, the locus of the magnetic head 11 and the locus of the magnetic head opening 21a of the cartridge holder 21 are different, and the magnetic head 11 and the magnetic head arm 12 are different. A position shift starts to occur with the opening 21a. The misalignment direction is the direction perpendicular to the moving direction of the carriage 5, that is, the short side direction of the magnetic head opening 21a of the cartridge holder 21.
Is hidden behind the cartridge holder 21. Then, when the cover 31 is fully opened, as shown in FIG. 4B, the cartridge holder 21 further rotates in the direction of arrow C, and is held at the insertion position where the cartridge 1 is inserted. The magnetic head arm 12 further rotates in the direction of arrow C, the position of the magnetic head 11 is displaced from the position of the magnetic head opening 21a of the cartridge holder 21, and the magnetic head arm 12 is stored on the back side of the cartridge holder 21.

Next, the operation of closing the cover 31 will be described with reference to FIGS. 5 and 6 show the operation when the cover 31 is closed. FIG. 5 (a) shows a state in which the cover 31 is fully opened, FIG. 5 (b) shows a state in which the cover 31 has started to be closed, and FIG. ) Is the cartridge holder 21
The state where the cover 31 is closed until the rotation of the
6B shows a state in which the cover 31 is closed until the rotation of the magnetic head arm 12 is stopped, and FIG. 6C shows a state in which the cover 31 is completely closed.

First, as shown in FIG. 5A, the cover 3
1 is in a fully opened state. Cartridge holder 2
1 is held by a holder lifter 37 at a cartridge insertion position where the cartridge 1 can be inserted. The magnetic head 11 is the opening 2 for the magnetic head of the cartridge holder 21.
It is stored on the back side of the cartridge holder 21 with a deviation from 1a. Note that FIG. 5A shows the same state as FIG. 4B.

When the cover 31 is started to be closed and rotated in the direction of arrow D from the state shown in FIG. 5A, the magnetic head arm 12 is urged by a spring (not shown), so that the arm lifter 36 is moved. In the supported state, it starts rotating in the direction of arrow D about the arm rotating shaft 13. Since the cartridge holder 21 is biased by a spring (not shown), it starts rotating in the direction of arrow D about the holder rotating shafts 22a and 22b while being supported by the holder lifter 37. Then, as shown in FIG. 5B, the amount of positional deviation between the magnetic head 11 and the magnetic head opening 21a becomes smaller. When the cover 31 is further closed, as shown in FIG. 6A, the cartridge holder 21 is positioned by a stopper (not shown). Then, as shown in FIG. 6B, the holder lifter 37 is separated from the cartridge holder 21, and the magnetic head arm 12 is stopped at a predetermined position by a stopper (not shown). As a result, the magnetic head 11 is positioned at a recordable position on the disk 2.
Then, when the cover 31 is completely closed, the arm lifter 36 separates from the magnetic head arm 12 as shown in FIG. 6C. As a result, the same state as in FIG.
If the cartridge 1 is inserted into the cartridge holder 21, the cartridge 1, the disk 2 and the magnetic head 11 are positioned at predetermined positions, respectively, and are ready for recording and reproduction.

As described above, according to this embodiment, since the magnetic head 11 can be housed on the back side of the cartridge holder 21 when the cover 31 is opened, the operator is prevented from accidentally touching the magnetic head 11. Therefore, the magnetic head 11 can be prevented from being displaced or damaged. That is,
The magnetic head 11 of the magneto-optical recording / reproducing apparatus can be protected.

In this embodiment, as shown in FIG. 2, the cartridge holder 21 is designed to insert the cartridge 1 vertically into the holder rotating shafts 22a and 22b, but as shown in FIG. The cartridge holder 21 can be configured in the same manner as in this embodiment even if the cartridge 1 is inserted in parallel with the holder rotating shafts 22a and 22b.
Similar effects are obtained.

Next, a second embodiment according to the present invention will be described with reference to FIGS. 8, 9, 10, 11, 12, 13, and 14.
This will be described with reference to FIG. FIG. 8 is a perspective view showing the configuration of the second embodiment, showing the state of the cartridge 1 in the standby state for insertion. FIG. 9 is a cross-sectional view of the same embodiment taken along a plane including the arm rotation axis, and FIGS. 10 and 11 are views showing a state of opening the cover of the same embodiment as seen from a direction perpendicular to the moving direction of the carriage 5. FIG. 12 is an operation explanatory view showing a state when the cover of the same embodiment is viewed from above, and FIG. 13 and FIG. 14 are states when the cover of the same embodiment is closed by the carriage. 5 is an operation explanatory view showing a state viewed from a direction perpendicular to the moving direction of 5, and FIG. 15 is an operation explanatory view showing a state when closing the cover of the same embodiment as seen from above.

First, the structure of this embodiment will be described with reference to FIGS. The same elements as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The cartridge used in this embodiment is the same as that shown in FIG. 2 of the first embodiment.

Reference numeral 112 denotes a magnetic head arm, which holds the objective lens 8 between the magnetic head 11 and the disk 2 during recording.
It is held at a position facing a. Magnetic head arm 112
As shown in FIG. 9, the arm rotation shaft 113 is attached at a tilt angle θ with respect to a direction perpendicular to the moving direction of the carriage 5. The arm rotation shaft 113 is rotatably held by the bearings 114a and 114b of the carriage 5, and the magnetic head arm 112 is rotatable around the arm rotation shaft 113. The magnetic head arm 112 is biased by a spring (not shown), and is positioned by a stopper (not shown) when the cover 131 is closed.

A cartridge holder 121 holds the cartridge 1 in the apparatus. Cartridge holder 1
A holder rotating shaft 122 is attached to the shaft 21 in a direction perpendicular to the moving direction of the carriage 5, and is rotatably held by bearings 123a and 123b fixed to the chassis 4. In addition, the cartridge holder 121
The magnetic head opening 12 into which the magnetic head 11 is inserted
1a is provided. In addition, the cartridge holder 121
Is biased by a spring (not shown), and is held at a mounting position where the cartridge 1 is mounted by a stopper (not shown) when the cover 131 is closed.

Reference numeral 131 denotes a cover which is a part of the housing 134, and a cover rotating shaft 133 is attached to the cover 131 in a direction perpendicular to the moving direction of the carriage 5. The cover rotating shaft 133 is the bearing portion 1 of the housing 134.
35a and 135b are rotatably held and cover 131
Is rotatable about the cover rotation shaft 133.

An arm lifter 136 as a magnetic head rotating mechanism is fixed to the cover 131. When the cover 131 is opened, the arm lifter 136 engages with the magnetic head arm 112 to rotate the magnetic head arm 112 about the arm rotation shaft 113, so that the magnetic head 11 is obliquely upward so as to be separated from the disk 2. Move to.
When the cover 131 is closed, the arm lifter 1
Reference numeral 36 supports the magnetic head arm 112, and the magnetic head arm 112 interlocks with it to pivot about an arm pivot shaft 113, and moves the magnetic head 11 obliquely downward so as to approach the disk 2.

Reference numeral 137 denotes a holder lifter as a holder rotating mechanism, which is fixed to the cover 131. Cover 1
When opening 31, the holder lifter 137 engages with the cartridge holder 121, rotates the cartridge holder 121 in the direction of arrow C, and holds the cartridge holder 121 at the cartridge insertion position into which the cartridge 1 can be inserted. When the cover 131 is closed, the holder lifter 137 supports the cartridge holder 121, and the cartridge holder 121 rotates in the direction of arrow D in conjunction with the holder lifter 137.

Next, the operation of this embodiment will be described.

First, the operation of opening the cover 131 will be described with reference to FIGS. 10, 11, and 12.

FIGS. 10 and 11 show the operation of opening the cover 131 as seen from a direction perpendicular to the moving direction of the carriage 5, and FIG.
1 is closed, FIG. 10B shows the arm lifter 13
6 is in a state in which the cover 131 is opened until the arm 112 is in contact with the arm 112, FIG. 10C is in a state in which the cover 131 is opened until the holder lifter 137 and the cartridge holder 121 are in contact with each other, and FIG. The opened state, FIG. 11B shows the state where the cover 131 is fully opened. 12A and 12B show a state in which the cover opening operation is viewed from above. FIG. 12A is a state in which the cover 131 is closed, and FIG. 12B is a state after the arm lifter 136 and the arm 112 are in contact with each other. The cover 131 is opened, the cover 131 is opened until the holder lifter 137 contacts the cartridge holder 121, (c) shows the cover 131 further opened, and (d) shows the cover 131 fully opened.

When the cover 131 is closed, FIG.
As shown in 0 (a), the cartridge holder 121 is held at a mounting position where the cartridge 1 is mounted by a stopper (not shown). The magnetic head arm 112 is positioned at a predetermined position by a stopper (not shown).
At this time, a part of the magnetic head 11 is formed in the magnetic head opening 1
21a. The arm lifter 136 is separated from the magnetic head arm 112. Holder lifter 137
Is separated from the cartridge holder 121.

When the cover 131 starts to open from the state of FIG. 10A and the cover 131 starts to rotate in the direction of arrow C, the arm lifter 136 engages with the magnetic head arm 112 as shown in FIG. 10B. To do. Holder lifter 13
7 and the cartridge holder 121 are still separated from each other.
Then, as shown in FIG. 10C, the holder lifter 137.
Engages the cartridge holder 121. The magnetic head arm 112 uses the arm lifter 136 to move the arm rotating shaft 1
Start to rotate around 13. As a result, the magnetic head arm 112 is displaced in the direction of arrow C, the magnetic head 11 is ejected from the magnetic head opening 121a of the cartridge holder 121, and the magnetic head 11 is moved to the cartridge holder 121.
It is stored between the cover and the cover 131. Further, since the arm rotating shaft 113 of the magnetic head arm 112 is inclined with respect to the holder rotating shaft 122 of the cartridge holder 121, the magnetic head arm 112 also moves in the arrow E direction as shown in FIG. Displacement starts, and the cartridge holder 1
21 begins to shift from the magnetic head opening 121a. Then, when the cover 131 is further opened, as shown in FIG.
As shown in, the cartridge holder 121 starts to rotate in the arrow C direction about the holder rotation shaft 122 by the holder lifter 137. The magnetic head arm 112 is further rotated by the arm lifter 136 about the arm rotation shaft 113, and is further displaced in the arrow C direction. At this time, FIG.
As shown in (c), the magnetic head arm 112 is further displaced in the arrow E direction, and the positional deviation between the magnetic head opening 121a of the cartridge holder 121 and the magnetic head 11 increases. The misalignment direction is a direction perpendicular to the moving direction of the carriage 5, that is, the cartridge holder 121.
Since it is in the short side direction of the magnetic head opening 121a, the magnetic head 11 is hidden behind the cartridge holder 121. Then, when the cover 131 is fully opened, FIG.
As shown in (b), the cartridge holder 121 further rotates in the direction of arrow C and is held at the cartridge insertion position where the cartridge 1 can be inserted. Magnetic head arm 11
2 is further displaced in the direction of arrow C. And FIG.
As shown in (d), the magnetic head arm 112 is further displaced in the direction of the arrow E, the position of the magnetic head 11 is displaced from the position of the magnetic head opening 121a of the cartridge holder 121, and the magnetic head arm 112 is housed on the back side of the cartridge holder 121. .. Therefore, the cartridge 1 can be inserted.

Next, the case where the cover 131 is closed will be described with reference to FIGS. 13, 14 and 15. 13 and 14 show a state in which the operation for closing the cover 131 is viewed from a direction perpendicular to the moving direction of the carriage 5, and FIG. 13A shows a state in which the cover 131 is fully opened. FIG. 14B is a state in which the cover 131 has started to be closed, and FIG.
14A shows a state in which the cover 131 is closed until the rotation of the cartridge holder 121 stops, and FIG. 14B shows a state in which the cover 131 is closed until the rotation of the magnetic head arm 112 stops. Shows the state where the cover 131 is completely closed. FIG. 15 shows a state in which the operation of closing the cover 131 is viewed from above, and FIG.
31 is a state in which the cartridge 31 is fully opened, and (b) is the cartridge holder 12
The state where the cover 131 is closed until the rotation of 1 stops,
(C) shows a state in which the cover 131 is closed until the rotation of the magnetic head arm 121 is stopped, and (d) shows a state in which the cover 131 is completely closed.

First, as shown in FIG. 13A, the cover 131 is in a fully opened state. The cartridge holder 121 is held at the insertion position where the cartridge 1 is inserted. The magnetic head 11 has a magnetic head opening 121.
It is stored on the back side of the cartridge holder 121, deviating from a. The cartridge 1 can be inserted in this state. Note that FIG. 13A shows the same state as FIG. 11B. FIG. 15A shows the same state as FIG. 12D.

When the cover 131 is started to be closed from the state shown in FIG. 13 (a) and the cover 131 is started to rotate in the direction of arrow D,
As shown in FIG. 13B, the cartridge holder 121
Is biased by a spring (not shown), and thus starts to rotate about the holder rotation shaft 122 in the direction of arrow D while being supported by the holder lifter 137. Magnetic head arm 112
Is biased by a spring (not shown), so that the magnetic head 11 is rotated about the arm rotation shaft 113 while being supported by the arm lifter 136, and the magnetic head 11 is displaced in the arrow D direction. Furthermore, as shown in FIG. 15B, the magnetic head arm 1
12 is also displaced in the direction of arrow F, and the amount of displacement between the magnetic head 11 and the magnetic head opening 121a becomes smaller. When the cover 131 is further closed, as shown in FIG.
As shown in, the cartridge holder 121 stops at the mounting position where the cartridge 1 is mounted by a stopper (not shown). The positional shift amount of the magnetic head 11 is shown in FIG.
It becomes smaller as shown in. After that, as shown in FIG. 14B, the holder lifter 137 moves the cartridge holder 12
1, the magnetic head arm 112 is stopped at a predetermined position by a stopper (not shown). As a result, the magnetic head 11 is positioned at a recordable position on the disk 2. Then, when the cover 131 is completely closed, FIG.
As shown in FIG. 4C, the arm lifter 136 is separated from the magnetic head arm 112. At this time, the magnetic head 1
1 is a cartridge holder 1 as shown in FIG.
21 corresponding to the magnetic head opening 121a. As a result, if the cartridge 1 is inserted into the cartridge holder 121, the cartridge 1, the disk 2 and the magnetic head 11 are set at predetermined positions, respectively, and recording and reproduction are possible.

As described above, according to the present embodiment as well, the magnetic head 11 can be housed on the back side of the cartridge holder 121 when the cover 131 is opened, so that the operator does not carelessly contact the magnetic head 11. Since this can be prevented, it is possible to prevent the magnetic head 11 from being displaced or damaged. That is, the magnetic head 11 of the magneto-optical recording / reproducing apparatus can be protected.

[0046]

According to the present invention, the holder rotating shaft of the cartridge holder and the arm rotating shaft of the magnetic head arm are arranged perpendicularly to the moving direction of the optical head and the magnetic head, and the holder rotating shaft is rotated. By arranging the shaft and the arm rotating shaft in parallel and non-coaxially or by inclining the holder rotating shaft and the arm rotating shaft, the moving track of the magnetic head and the moving track of the magnetic head opening can be made different. Therefore, when the cover is fully opened, the magnetic head can be housed between the cartridge holder and the cover, and the magnetic head is displaced from the magnetic head opening of the cartridge holder. Since it can be completely displaced from the head opening, the magnetic head can be protected from accidental contact by the operator. Therefore, it is possible to prevent displacement or damage of the mounting position of the magnetic head.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of the present invention.

FIG. 2 is a perspective view showing a cartridge holder according to the first embodiment of the present invention.

FIG. 3 is an operation explanatory diagram when the cover of the first embodiment of the present invention is opened.

FIG. 4 is an operation explanatory diagram when the cover of the first embodiment of the present invention is opened.

FIG. 5 is an operation explanatory diagram when the cover according to the first embodiment of the present invention is closed.

FIG. 6 is an operation explanatory diagram when the cover of the first embodiment of the present invention is closed.

FIG. 7 is a perspective view showing another cartridge holder according to the first embodiment of the present invention.

FIG. 8 is a perspective view showing a configuration of a second embodiment of the present invention.

FIG. 9 is a sectional view showing a main part of a second embodiment of the present invention.

FIG. 10 is an operation explanatory diagram showing a state when the cover of the second embodiment of the present invention is opened, as seen from a direction perpendicular to the moving direction of the carriage.

FIG. 11 is an operation explanatory view showing a state when the cover of the second embodiment of the present invention is opened, as seen from a direction perpendicular to the moving direction of the carriage.

FIG. 12 is an operation explanatory view showing a state when the cover according to the second embodiment of the present invention is opened, as seen from above.

FIG. 13 is an operation explanatory view showing a state when closing the cover according to the second embodiment of the present invention, as seen from a direction perpendicular to the moving direction of the carriage.

FIG. 14 is an operation explanatory view showing a state when closing the cover according to the second embodiment of the present invention, as seen from a direction perpendicular to the moving direction of the carriage.

FIG. 15 is an operation explanatory view showing a state when the cover according to the second embodiment of the present invention is closed, as viewed from above.

[Explanation of symbols]

 1 ... Cartridge, 5 ... Carriage, 6a, 6b ... Shaft, 8 ... Optical head, 11 ... Magnetic head, 12, 112 ... Magnetic head arm, 13, 113 ... Arm rotating shaft, 21, 121 ... Cartridge holder, 21a, 121a ... Magnetic head opening, 22a, 22b, 122 ... Holder rotating shaft, 31, 131 ... Cover, 33, 133 ... Cover rotating shaft, 34, 134 ... Housing, 36, 136 ... Arm engaging portion, 37 137 ... Holder engaging portion.

Claims (4)

[Claims] 1. A magnetic head for applying a magnetic field to a recording medium,
A magnetic head arm that holds the magnetic head, an optical head that performs recording and reproduction on the recording medium, a transfer mechanism that transfers the optical head and the magnetic head, and a cartridge that stores the recording medium inside are held. Also, in a magneto-optical recording / reproducing apparatus including a cartridge holder having a magnetic head opening into which the magnetic head is inserted at the time of recording / reproducing and a cover as a part of a housing above the cartridge holder, the magnetic head arm is rotated. A magneto-optical recording / reproducing device comprising a first rotating shaft movably supported and a second rotating shaft rotatably supporting the cartridge holder. 2. A magnetic head for applying a magnetic field to a recording medium,
A magnetic head arm that holds the magnetic head, an optical head that performs recording and reproduction on the recording medium, a transfer mechanism that transfers the optical head and the magnetic head, and a cartridge that stores the recording medium inside are held. Also, in a magneto-optical recording / reproducing apparatus including a cartridge holder having a magnetic head opening into which the magnetic head is inserted at the time of recording / reproducing and a cover as a part of a housing above the cartridge holder, the magnetic head arm is rotated. A first rotating shaft that movably supports and a second rotating shaft that rotatably supports the cartridge holder are provided, and the second rotating shaft is with respect to the transfer direction of the transfer mechanism. When the cartridge holder is in the insertion position, the first rotation shaft is arranged substantially parallel to the first rotation shaft, and the first rotation shaft is arranged in parallel and non-coaxially with the second rotation shaft. , A magneto-optical recording and reproducing apparatus is characterized in that as offset from the opening for the magnetic head while accommodating the magnetic head between the cover and the cartridge holder. 3. A magnetic head for applying a magnetic field to a recording medium,
A magnetic head arm that holds the magnetic head, an optical head that performs recording and reproduction on the recording medium, a transfer mechanism that transfers the optical head and the magnetic head, and a cartridge that stores the recording medium inside are held. Also, in a magneto-optical recording / reproducing apparatus including a cartridge holder having a magnetic head opening into which the magnetic head is inserted at the time of recording / reproducing and a cover as a part of a housing above the cartridge holder, the magnetic head arm is rotated. A first rotating shaft that movably supports and a second rotating shaft that rotatably supports the cartridge holder are provided, and the second rotating shaft is with respect to the transfer direction of the transfer mechanism. Arrange almost vertically,
The first rotating shaft is arranged non-parallel to the second rotating shaft, and the magnetic head is housed between the cartridge holder and the cover when the cartridge holder is at the insertion position. At the same time, the magneto-optical recording / reproducing apparatus is arranged so as to be displaced from the opening for the magnetic head. 4. The magneto-optical recording / reproducing apparatus according to claim 1, 2, or 3, wherein the cover is provided with an arm lifter that engages with the magnetic head arm, and the cover engages with the cartridge holder. A magneto-optical device, characterized in that a holder lifter is provided, the arm lifter rotates the magnetic head arm in conjunction with the opening / closing operation of the cover, and the holder lifter rotates the cartridge holder in conjunction with the opening / closing operation of the cover. Recording / playback device.