JPH0380449A - Magnetic head driver - Google Patents

Abstract

PURPOSE:To use the parts of a disk inserting/ejecting device in common without increasing the height and depth of the device by arranging a pair of plate-like erected parts having inclined grooves on the upper face of pocket and guiding and holding a magnetic head by the grooves. CONSTITUTION:Before inserting a disk, the magnetic head 17 and the pocket 6 are arranged on the uppermost part. When a cassette 22 including a magneto- optical disk 21 is inserted into the pocket 6, the pocket 6 is moved in an arrow B direction in accordance with the movement of a moving plate 10. Since the head 17 is interrupted at its movement by the stopper part 20a of a fixing member 20, a stud 17a is moved down along the inclined groove 6b of the erected part 6a. When the moving plate 10 is stopped, the head 17 is positioned on a prescribed position on the disk 21. The disk 17 can be ejected in the reverse order. Since the erected parts are formed on the pocket of the optical disk device, the parts can be used in common.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a magneto-optical disk device that records information on a magneto-optical disk and/or reproduces information from a magneto-optical disk. This invention relates to a head opening device.

[Conventional technology]

As shown in FIG. 6, the conventional magnetic head opening device is composed of a magnetic head 302, a rotating lever 312, a rotating shaft 32, a fixing member 33, and a frame 34. Moving plate 35.
Pocket 36. The disc insertion/ejection device, which includes the stud 37 and the like, was constructed from different parts.

In the magnetic head opening device shown in FIG. 6, the movable plate 35 of the disk insertion/ejection device moves in the direction of arrow A together with the pocket 36, thereby causing the stud 37 attached to the movable plate 35 to move.
As the rotation lever 31 moves, the fixed member 33
The magnetic head 30 is rotated downward about a rotation shaft 32 fixed to the pocket 36, and the magnetic head 30 is moved to a magneto-optical disk (not shown) stored in a pocket 36 or a magneto-optical disk (not shown) in a cassette (not shown). (not shown).

In addition, as a conventional disc insertion/ejection device, the
8-85966 and the like.

[Problem to be solved by the invention]

In FIG. 6, since the magnetic head 30 is driven by rotating the rotating lever 31, the height of the entire magneto-optical disk device is increased by the height when the rotating lever 30 is in the upper position. had to be made higher, which caused the problem of exceeding the standard full hide value.

In addition, in FIG. 6, in order to attach the stud 37 for rotating the rotating lever 31 to the moving plate 35,
There is a problem in that the depth of the movable plate 35 must be increased, and as a result, the depth of the entire magneto-optical disk device is also increased.

Furthermore, in the case where parts of a disk insertion/ejection device manufactured for an optical disk device are to be used as parts of the disk insertion/ejection device of FIG. 6 for a magneto-optical disk device, in addition to the pocket, the above-mentioned Since the depth of the movable plate 35 must be increased as shown in FIG. Therefore, it is necessary to develop and manufacture new parts for the disk insertion/ejection device shown in Figure 6 for the magneto-optical disk drive, which increases development costs and development schedules, as well as the total mold cost for manufacturing one part. There was a problem.

The purpose of the present invention is to solve the problems of the prior art described above,
The overall height and depth of the magneto-optical disk device does not increase or increase, and in addition, parts of the disk insertion and ejection device for optical disk devices can be shared as parts of the disk insertion and ejection device for optical disk devices. The object of the present invention is to provide a magnetic head drive device that achieves the following.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention.

A pair of plate-like upright parts are provided on the upper surface of the pocket, substantially parallel to each other along the direction of movement of the pocket, and upright at a certain interval, and the upright parts have a part that has a certain inclination with respect to the horizontal direction. A magnetic head is provided between the upright portions, and a pair or more coaxial studs provided on both sides of the magnetic heads are respectively inserted into the holes. To be,
At the same time, a fixing member is provided to fix the magnetic head so that it does not move only in the direction of movement along the substantially horizontal direction of the pocket.

[Effect]

The pocket accommodates a magneto-optical disk (or a cassette containing a magneto-optical disk). When inserting a disk, it moves in a substantially horizontal direction from the outside toward the inside, and then descends to mount the magneto-optical disk (or the magneto-optical disk in the cassette) on the turntable. Further, when ejecting the disk, the magneto-optical disk (or the magneto-optical disk in the cassette) is lifted up to remove it from the turntable, and then moved in a substantially horizontal direction toward the outside from the C' section. do.

On the other hand, the magnetic head is fixed by the fixing member so as not to move in a direction of movement along the substantially horizontal direction of the pocket.

Therefore, when the disk is inserted, the stud of the magnetic head moves relatively along the hole in the upright portion of the pocket due to movement from the outside to the inside of the pocket in a substantially horizontal direction, and as a result, The magnetic head gradually descends in a direction substantially perpendicular to the pocket. Furthermore, since the pocket itself moves approximately horizontally and then descends, the magnetic head also descends further and is positioned on the magneto-optical disk (or on the magneto-optical disk in the cassette). be done.

Further, when the disk is ejected, the magnetic head rises in a substantially vertical direction due to the rise of the pocket, and then, by moving in a substantially horizontal direction from the inside of the pocket to the outside, the stud of the magnetic head moves into the pocket. According to the present invention, the magnetic head is held by the upright part provided in the pocket, so that the magnetic head is moved relatively along the hole in the upright part of the pocket. The height of the entire magneto-optical disk device can be reduced compared to the case where a rotating lever is used.

Further, since there is no need to increase the depth of the moving plate for moving the pocket, the depth of the entire magneto-optical disk device does not increase.

Furthermore, if you want to use parts of a disk insertion/ejection device manufactured for an optical disk device as they are as parts of a disk insertion/ejection device for a magneto-optical disk device, all you need to do is slightly modify the pocket. Other movable plates and the like can be commonly used as parts of the disk insertion/ejection device for magneto-optical disk devices.

It is possible to reduce development costs and the total mold cost for producing two parts during the development schedule.

〔Example〕

FIG. 1 is a perspective view showing a magnetic head drive device as an embodiment of the present invention.

In FIG. 1, (a) shows the state before the disc is inserted, and (b) shows the state after the disc is inserted.

First, before explaining the structure and operation of the magnetic head drive device in this embodiment, the structure and operation of the disk insertion/ejection device shown in FIG. 1 will be explained.

FIG. 2 is a perspective view showing only the portion of the disk insertion/ejection device extracted from the first construction drawing.

In FIG. 2, (a) shows the state before the disc is inserted, and (b) shows the state after the disc is inserted.

In Fig. 2, 1 is the chassis of the magneto-optical disk device (
(not shown).

A pair of rollers 2 are provided on both sides 1a and lb of this frame 1.
a and 2b are fixed.

Further, 10 is provided on the frame 2, and L3, which will be described later,
This is a movable plate that moves in the direction of arrow B or the opposite direction by an opening movement mechanism (not shown in FIG. 2) shown in FIGS. A pair of rollers 2c are fixed to both side surfaces of the frame 2, and a slot 19 through which the rollers 2a pass is provided in the horizontal direction.

A pocket 6 is provided on the movable plate 10 and stores a magneto-optical disk (not shown) or a cassette (not shown) containing the magneto-optical disk. On both sides of this pocket 6, there are rectangular holes 9 that engage with the rollers 2a,
A vertical groove 8 that engages with the roller 2b and an inclined groove 7 that engages with the roller 2c are provided.

3 is a plan view showing a drive mechanism for driving the moving plate shown in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line X--X in FIG. 2 (,).

Now, the configuration of the opening mechanism will be explained.

As shown in FIG. 4, the moldle mounting plate 13 to which the moldle 16 is fixed is connected to the stud 1 fixed to the lower surface of the frame 1.
2 with screws 18.

Furthermore, between the moldle mounting plate 13 and the lower surface of the frame l, as shown in FIG. , a gear 23 that fits into the upper gear 5,
A gear upper 4 that fits into the gear 23 is provided, respectively.

Further, a rack 11 is fixed to the lower surface of the movable plate IO, and is fitted with a gear 14.

Now, we will explain the operation when inserting a disc.

Before the disk is inserted, the movable plate 10 and the pocket 6 are located at the forefront, as shown in FIG. 2(a).

Therefore, when a magneto-optical disk or a cassette containing a magneto-optical disk is inserted into the pocket 6, a switch (not shown) is turned ON and the mode 6 shown in FIGS. 3 and 4 is activated.
The rotation axis rotates. Thereby, the worm gear 17.
Gears 15 and 23 rotate, gear 14 rotates clockwise in FIG. 3, and rack 11 moves in the direction of arrow C.

Move in direction B.

At this time, the movable plate 10 is held between the rollers 2a of the frame 1 passing through the slots 19 of the movable plate 10 and the rollers 2b of the frame l supporting the lower part of the movable plate 10, and is moved horizontally in the moving direction. regulated.

Also, due to the movement of the movable plate 10, the rollers 2c of the movable plate 10
also moves in the direction of arrow B, and at that time, roller 2C moves to pocket 6.
The lower part of the inclined groove 7 contacts the pocket 6, and the pocket 6
Push in the direction of arrow B.

At this time, the pocket 6 is held between the roller 2a of the frame 1 that passes through the hole 19 of the pocket 6 and the roller 2b of the frame 1 that supports the lower part of the pocket 6, and its movement direction is restricted to the horizontal direction. ing. But then,
When the longitudinal groove 8 of the pocket 6 comes to the position of the roller 2b of the frame 1, the pocket 6 moves down slightly due to its own weight. When the movable plate 10 moves further, the vertical groove 8 of the pocket 6 engages with the roller 2b of the frame 1, preventing the pocket 6 from moving in the horizontal direction. However, the rollers 2c of the movable plate 10 move into the inclined groove 7 of the pocket 6
As a result of the engagement, it gradually descends.

When the pocket 6 is completely lowered, a separately provided switch (not shown) is mechanically turned off, and the rotation of the rotary shaft of the mode 16 is stopped, and the magneto-optical disk or the magneto-optical disk in the cassette is The disc is mounted on a turntable (not shown), and a series of disc insertion operations are completed.

Note that the operation when ejecting the disk is performed in the reverse order of the operation when inserting the disk.

The above is the configuration and operation of the portion of the disk insertion/ejection device shown in FIG.

Therefore, next, the configuration of the magnetic head driving device in this embodiment will be explained.

In FIG. 1, 1, 10.6 are the same as in FIG. However, on the top of pocket 6.

Although omitted in FIG. 2, the upright portion 6a has an inclined groove 6b.
is provided.

Additionally, 17 is a magnetic head. This magnetic herad 17
A stud 17a is fixed to each side of the pocket 6, and the stud 17a passes through the inclined groove 6b of the upright portion 6a of the pocket 6.

20 is a fixing member fixed to the frame 1.

A hole is formed in the upper surface of this fixing member 20, and the upright portion 6a of the pocket 6 passes through the hole, and stopper portions 20a, 20b are provided so that the magnetic head 7 can be inserted in the front and back direction (the movable plate 10 It is fixed so that it does not move in the direction of movement).

Now, the operation of the magnetic head drive device in this embodiment will be explained.

FIG. 5(a) is a sectional view showing the cross section in the 1-1 direction of FIG. 1(a), and FIG. 5(b) is a sectional view showing the cross section in the ■-■ direction of FIG. 2(b). be.

In FIG. 5, 2 is a magneto-optical disk, 22 is a cassette containing the magneto-optical disk 21, and 23 is a turntable.

Now, we will explain the operation when inserting a disc.

Before the disk is inserted, the magnetic head 17 and the pocket 6 are located at the top, as shown in FIG. 5(a).

Therefore, when the cassette 22 containing the magneto-optical disk 21 is inserted into the pocket 6, the movable plate 10 (
(not shown in FIG. 5) moves, the pocket 6 moves in the direction of arrow B.

At this time, since the magnetic head 17 is prevented from moving in the direction of arrow B by the stopper portion 20a of the fixing member 20, it remains stopped in the horizontal direction. Therefore, due to the movement of the pocket 6, the stud 17a of the magnetic head F moves relatively along the inclined groove 6b of the upright portion 6a of the pocket 6, and as a result, the magnetic head 17 gradually moves with respect to the pocket 6. It will go down. Moreover, since the pocket 6 itself also descends after moving in the horizontal direction, the magnetic head 17 also descends further.

Then, when the moving plate 10 stops moving, the magnetic head 1
7 also stops moving, and the magnetic head 17 moves to the magneto-optical disk 2.
The disc is positioned at a predetermined position on the workpiece, and the series of disk insertion operations is completed.

Note that the operation when ejecting the disk is performed in the reverse order of the operation when inserting the disk.

〔Effect of the invention〕

According to the present invention, since the magnetic head is held by the upright part provided in the pocket, the height of the entire magneto-optical disk device can be lowered compared to the case of using a conventional rotating lever, and It can be kept within full hide.

Further, since there is no need to increase the depth of the movable plate, the depth of the entire magneto-optical disk device does not increase.

Furthermore, when trying to use parts of a disk insertion/ejection device manufactured for an optical disk device as they are as parts of a disk insertion/ejection device for a magneto-optical disk device, only the pocket must be slightly modified (i.e., It is only necessary to provide an upright part in the pocket), and other movable plates and frames can be shared as parts of the disk insertion and ejection device for magneto-optical disk devices, so the development cost and development schedule can be reduced by two parts. It is possible to reduce the total mold cost etc.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a magnetic head drive device as an embodiment of the present invention, FIG. 2 is a perspective view showing only the disk insertion/ejection device in FIG. 1, and FIG. 2 is a plan view showing an active mechanism for activating the moving plate of FIG. 2;
FIG. 4 is a sectional view taken along the line X-X in FIG. 2(a), FIG. 5(a) is a sectional view taken along the I-1 direction in FIG. 1(a), and FIG. (b) is n-n in Fig. 2(b)
FIG. 6 is a perspective view showing a conventional magnetic head device. 1...Frame, 6...Pocket 1-16
a... Upright part of pocket 6, 6b... Slanted groove of upright part 6a, 17... Magnetic head, 17a... Stud of magnetic head 17, 20... Fixing member, 20a. 20b... Stopper portion of the fixing member 20, 21... Magneto-optical disk, 22... Cassette. Figure 1 (CL) Figure 2 1) 3rd + Figure 5 (0-) Figure/7 N5 5th Bamboo (b)

Claims (1)

[Claims] 1. When inserting the magneto-optical disk (or a cassette containing the magneto-optical disk), move the pocket that accommodates the magneto-optical disk (or a cassette containing the magneto-optical disk) in a substantially horizontal direction from the outside to the inside, and then insert the magneto-optical disk ( Alternatively, the pocket is lowered in order to mount the magneto-optical disk (or magneto-optical disk in the cassette) on the turntable, and when ejecting, the magneto-optical disk (or the magneto-optical disk in the cassette) is removed from the turntable. In a magneto-optical disk drive having a disk insertion/ejection device that raises the pocket and then moves the pocket from the inside to the outside in a substantially horizontal direction, the movement direction of the pocket is marked on the upper surface of the pocket. A pair of plate-shaped upright parts are provided that are substantially parallel to each other and spaced apart from each other along the vertical axis, and the upright parts have a pair or more of holes that have substantially the same shape as each other and have portions that are inclined at a certain angle with respect to the horizontal direction. a magnetic head is disposed between the upright portions such that a pair or more coaxial studs provided on both sides of the magnetic head are respectively inserted into the holes; A fixing member is provided that fixes the head so that it does not move only in the direction of movement along the substantially horizontal direction of the pocket, and when the pocket is inserted, the upright portion is moved from the outside to the inside of the pocket and then lowered. to lower the magnetic head in a substantially vertical direction and position the magnetic head on the magneto-optical disk (or on the magneto-optical disk in the cassette), and at the time of ejection, the pocket rises and then from the inside to the outside. A magnetic head driving device characterized in that the magnetic head is raised in a substantially vertical direction by movement of the upright portion as the magnetic head is moved to the vertical direction.