JPH05151753A - Magneto-optical disk device - Google Patents

Abstract

PURPOSE:To obtain a small-sized and thin device by providing a motor assembled body fixing a spindle motor movably and vertically in a direction intersecting orthogonally with the inserting direction of a cartridge. CONSTITUTION:The motor assembled body 2 is constituted of a moving member 13 fixing a spindle motor 10 and having plural projecting parts 17 on both side surfaces. An abutting condition between the head part 18a of an arm 18 and a slide member 16k is released since the arm 18 is rotated in the direction of the arrow Q1 by an insertion tip face when the cartridge 100 is inserted and a sliding plate 16 is moved in the direction of the arrow P4 by the pulling action of a spring 14 in the state of being stretched. Thus, the moving member 13 is moved in the direction of the arrow P1 since respective projecting parts 17 are moved downward along a inclined groove 16b and the spindle motor 10 for driving a disk is chucked to the disk 120 and chucking is ended. Further, ejection is performed by using an ejection motor assembled body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-optical disk device, and more particularly to a magneto-optical disk device which is preferably applied to a thin structure.

[0002]

2. Description of the Related Art 3.5 used in a magneto-optical disk device
A cartridge that accommodates an inch magneto-optical disk medium (hereinafter referred to as MOD) has substantially the same outer dimensions as a cartridge that accommodates a 3.5 inch floppy disk medium (hereinafter referred to as FD), It is built in a case body that has different thickness and chamfer formation site. That is, a plan view of the magneto-optical disk 100 of FIG.
As shown in the side view (b) and the bottom view (c), the magneto-optical disk 100 has a resin case 100a in which a magneto-optical disk 120 shown by a broken line is rotatably incorporated.
The shutters 103a and 103b that are integrally formed are opened and closed when the medium is inserted and removed, and the large opening 104 and the small opening 10 are formed.
The disk 120 is exposed to the outside.

As described above, the central portion of the disk 120 exposed to the outside is chucked through the large opening 104 to transmit the rotational force, while the external magnetic field is applied to the disk 120 through the small opening 109. It is for initializing the medium. In the shutter 103, the front and back parts 103a and 103b are integrally formed by bending a non-magnetic stainless metal plate or a thin plate made of resin or the like into a U-shape, and a guide groove formed on the side surface of the case 100a. Sliding part 103 made of resin that enters and is guided by sliding
c is integrally attached to the front and back portions 103a and 103b. With the above configuration, when the shutter 103 is opened and closed,
The end portion of the sliding portion 103c is pressed and moved by a pin or the like that enters the case inclined surface portion 112 to move against an urging member (not shown), and the shutter 10 in the closed state shown.
3 is moved in the direction of the arrow in the figure to open it.

Further, a chamfered portion 107 is formed at a corner portion of the case 100a to prevent the reverse insertion of the front side and the back side of the case 100a, and to form a pair of reference concave portions 101 and 102 in the XY direction of the medium. Are provided as above, and each dimension which is the reference dimension at the time of chucking is secured, and the reference surface P at the time of mounting is obtained. Further, in the case 100a, semi-circular recesses 105, 106 and recesses 1 which serve as locking portions at the time of insertion and ejection in a fully automatic device.
10 and 111 are formed respectively. The thickness of the resin case 100a is about 6 mm, and the magneto-optical disk described above has recently been determined as an international common standard.

[0005]

[Problems to be Solved by the Invention] However, 3.5
Since the inch MOD cartridge has a thickness approximately twice that of the 3.5 inch FD cartridge as described above, it is not possible to make the magneto-optical disk device thin like a disk drive device using the FD cartridge. Very difficult. In particular, when a mechanism for vertically checking an FD cartridge after insertion with respect to a spindle motor fixed to the apparatus is used as it is in a magneto-optical disk drive apparatus, as is generally used in a magnetic disk apparatus, the above-mentioned mechanism is used. As described above, there is a problem in that a moving stroke approximately twice as large as that in the case of using the FD cartridge is required and the device cannot be made thin. Therefore, the magneto-optical disk device of the present invention has been made in view of this problem, and an object thereof is to provide a magneto-optical disk device that can be made thin.

[0006]

[Means for Solving the Problems] and

In order to solve the above problems and achieve the purpose,
In the magneto-optical disk device of the present invention, the motor means that is moved in parallel through the opening of the base and applies a rotational force to the medium of the MOD cartridge inserted in the accommodating portion is substantially orthogonal to the inserting direction. 1. A magneto-optical disk device which is vertically moved in a direction to set to a mounting position and a standby position, wherein the motor means is fixed, and both side surfaces are supported on the base so as to move vertically and along the insertion direction. A moving member having a plurality of protrusions, an inclined groove portion having an inclination angle rising toward the opening side for guiding the protrusions, and a locking portion set to the standby position. A sliding member that is movably supported on the base in a direction along the insertion direction, a biasing member that biases the sliding member toward the opening, and a rear side portion of the accommodating portion. Freely rotatable in Therefore, it is possible to store the discharge urging force of discharge against the insertion of the MOD cartridge and also to have the sliding member move to the opening side with a portion that restricts locking with respect to the locking portion. The regulating member for regulating and the sliding member are further moved to the inner side of the accommodating portion against the urging member, the regulation is released, and the ejection urging force of the regulating member acts on the MOD cartridge. And a releasing member, and a moving member having a motor means fixed thereto is vertically moved to a mounting position and a standby position in a direction substantially orthogonal to the insertion direction of the MOD cartridge to make the apparatus thin. Work to do.

[0007] Preferably, the moving member is integrally formed by insert resin molding of the projecting portion, a guide portion that sneaks into the reference hole of the MOD cartridge, and a supporting portion that is supported so as to move vertically. Thus, the weight of the moving member is reduced, the durability of the mechanism is improved, and electrical insulation is achieved. Preferably, the restriction member is MO
The D cartridge is connected to an opening / closing means for opening / closing the shutter, and works to reduce the number of parts for constituting the apparatus. And, preferably, the releasing member is configured to include a motor unit that rotates a predetermined amount based on a discharge command signal,
It works to automatically eject the MOD cartridge.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a plan view showing a magneto-optical disk device of one embodiment, which is provided with a decorative panel 7 and is further shown together with a MOD cartridge. Further, FIG. 3 is a side view showing a main portion of FIG. 2 in a cutaway manner. In both figures, the base of the apparatus is a molded base 1 formed by aluminum die-casting and a sheet metal base formed by press bending a non-magnetic SUS thin plate material (about 0.5 mm thick). 12 and 12 are integrated with each other by screw tightening, a housing part for inserting and ejecting the cartridge 100 is provided in the sheet metal base 12, and each structure described later is attached to the molding base 1.

The cartridge 100 is provided with these components.
The molding base 1 will be described in order from the opening side for taking in and out.
A discharge motor assembly 3 that fixes the mounted cartridge 100 by fixing the rotation of the pin 3a by a predetermined angle in response to an electric signal is fixed to the inside of the side wall. This electric signal is sent from the main body side to which the device is connected, or is obtained by directly pressing the tact switch 24 fixed on the side surface of the molding base 1 with the switch button 7a provided on the decorative panel 7. ing.

A motor assembly 2 provided with a spindle motor 10 so as to surround the discharge motor assembly 3 is movably provided in the front and back directions of the plan view of FIG. 2 by a mechanism described later. A pressure sensor 40 for detecting the presence / absence of the cartridge 100 is provided at the left corner of the motor assembly 2, and the case 100a of the cartridge 100 is directly pressed for detection.

Further to the right of the motor assembly 2, a pair of motors 6 used for tracking are fixed on the molding base 1, and are slidably guided by a pair of parallel ceramic carriage shafts 4a. The coils 6a fixed to both sides of the moving optical system 4 are inserted into yokes (not shown) to form a linear motor, so that the moving optical system 4 is energized by energizing the coil 6a. The disk 120 can be moved along the radial direction to enable a tracking operation for accessing a predetermined track.

A detector 41 for detecting the moving speed and the moving position in a non-contact manner is provided in parallel with the carriage shaft 4a for controlling the tracking operation of the moving optical system 4, and the detector 41 is used. The moving optical system 4 can be driven at high speed and accurately by the servo control configured as described above, and since the tracking motor 6 is a linear type, an unreasonable external force does not act in a direction other than the moving direction, And it is very flat and configurable.

The moving optical system 4 having the above construction is equipped with a lens 4k having a function of automatically focusing on the magneto-optical disc surface 120a and a reflecting mirror 4m, and is fixed on the right side of the molding base 1. The laser light output from the fixed optical system 5 is made to act on the MOD cartridge surface 120a, and then the light is incident on the fixed optical system 5 to perform magneto-optical recording and reproduction.

As described above, each component is housed in the space between the molding base 1 and the sheet metal base 12 without any gap, and the cartridge 100 is thick when it is built in the apparatus as shown in FIG. The height H is made as small as possible. That is, after temporarily inserting the cartridge 100,
If the cartridge 100 is moved up and down to be chucked by the spindle motor 10, it is necessary to secure an extra space for one cartridge 100, and the thickness H cannot be reduced.

Therefore, the spindle motor 10 is magnetically attracted to the metal core 121 of the disk 120 and chucked in synchronization with the insertion of the cartridge 100 so that the H dimension is minimized. Furthermore, the flat coil 11 for generating an external magnetic field is directly bonded and provided on the sheet metal base 12 so that it can be made thin.

Hereinafter, an example of a mechanism for performing the chucking operation, which is based on the present application, will be described in detail with reference to the drawings. FIG. 4 is a partial external perspective view of the magneto-optical disk device, and shows a mechanism for moving the motor assembly 2 in association with the insertion of the cartridge 100. In this figure,
Hook portions 1a and 1b are integrally formed on the surface of the molding base 1 described above, and form a spring hook portion at one end of a tension spring 14 provided on both sides for tensioning a sliding plate described later. ing.

The molding base 1 is integrally provided with a pair of guide pins 1c and three headed pins 15 and is insert-molded into a base 13 molded of resin. Guide holes 1 for a pair of bushes provided
3a is inserted into the guide pin 1c to provide the base 1
3 can be moved in parallel in the direction of arrow P1 in the figure. In addition, metal pins 1 are provided at four locations on the side surface of the base 13.
Similarly to the guide hole portion 13a, 7 is formed by insert molding so as to protrude by a predetermined amount.

On the other hand, the sliding plate 1 is bent so as to provide the slanted holes 16b for slidably guiding the pins 17.
6 is the above-mentioned head-equipped pin 15 fixed to the molding base 1.
Guide holes 16a guided by the guide holes 16a are formed at three locations. After inserting the large holes of the guide holes 16a into the pin 15 with head, the guide holes 16a are slid as shown in the drawing. 1
6a is prevented from falling off from the headed pin 15 and can be moved in parallel. Hook portions 16e are further integrally formed on the left and right sides of the sliding plate 16. The springs 14 are tensioned between the hook portions 16e and the hook portions 1a and 1b of the above-described molding base 1, respectively. The moving plate 16 is urged to move toward the cartridge 100, which is the direction of arrow P4 in the figure.

In such a state of being urged by the movement, the slide member 16 formed of a resin having a high lubricity and fixed to the tip portion extending from the left side of the sliding plate 16 to the inner side of the apparatus.
The position is regulated in a state where the head portion 18a (locking portion) of the arm 18 is in contact with k. In addition, the sliding plate 16
Does not move in the direction of arrow P4 so that the base 13 can stand by at a predetermined position.

As will be described later, the arm 18 has an insertion front end surface which is used when the cartridge 100 is inserted.
As a result of rotating in the direction of arrow Q1 in the figure, the contact state between the head portion 18a (locking portion) of the arm 18 and the slide member 16k is released, and the sliding plate 16 is in the tensioned state.
It is moved in the direction of arrow P4 by the pulling action of No. 4. As a result, since each pin 17 moves downward along the inclined groove 16b, the base 13 moves in the direction of arrow P1.

FIG. 5 is a partial external perspective view of the magneto-optical disk device, showing a state after the cartridge 100 is mounted. In order to obtain the state shown in this figure, the cartridge 100 is inserted, and the arm 18 is rotated in the direction of arrow Q1 in FIG. 4 to release the contact state with the sliding plate 16,
The base 13 is moved in the direction of arrow P1 so that the disk driving spindle motor 10 provided on the base 13 is chucked to the disk 120. This completes chucking.

From this state, in order to eject the cartridge 100 to the outside, the end portion 16c of the sliding plate 16 is indicated by an arrow P.
By pressing the pin 3a of the discharge motor assembly 2 in the three directions, a force opposite to the pulling force of the spring 14 stretched on the sliding plate 16 is applied, and again the base 13 is pressed as shown in FIG. Is moved in parallel in the direction of arrow P2 to release the chucking state. Next, the slide member 16k fixed to the end of the sliding plate 16 and the head 18 of the arm 18
Release the locked state of a.

On the other hand, the arm 18 is provided with a large torsion spring, as will be described later, and the arm 18 is urged to rotate in the direction of the arrow Q2 in the figure with a strong force. The side surface of the cartridge 100 is pushed and ejected for operation. Furthermore, the shutter 103 is opened as shown by abutting on the resin sliding portion 103c of the shutter 103 which is slidably guided by entering the guide groove formed on the side surface of the case described in FIG. The open pin 19 that moves moves in conjunction with the discharge rotation operation of the arm 18 to open and close the shutter 103 as described later.

Next, FIG. 6 is a plan view of the base 13, and FIG. 7 is a side view of the base 13. In both figures, the motor 10
A flange portion 10a having a built-in permanent magnet is fixed to its rotation output shaft, so that the chucking portion 121 of the disk 120 housed in the cartridge 100 is magnetically attracted to perform chucking. There is. The motor 10 is fixed by screws to the base 13 that is integrally resin-molded with various components as described above.

Here, the base 13 is further provided with a pair of reference recesses 101, 10 on the back surface of the case 100a.
A positioning pin 20 is provided to enter the position 2 to enable relative positioning of the cartridge 100 with respect to the base 13 prior to the chucking operation. Further, although the electronic components 21a mounted on the flexible substrate 21 are mounted at high density, electrical insulation can be sufficiently ensured by resin molding.

Further, FIG. 8 is a side view (a) and a front view (b) of the discharge motor assembly 3. The discharge motor assembly 3 is inside the side wall portion of the molding base 1 as shown in FIG. It must be housed in a very limited space and have a function of pressing with a large force in the arrow P3 direction shown in FIG. For this purpose, a small direct current motor 26 is used as the motor, and the disk 23 having the pin 3a fixed thereto is rotated through a reduction gear 27 in a predetermined manner. Due to this predetermined rotation, the hall element sensor 22 that operates when the permanent magnet 23a fixed to the disk 23 approaches is fixed to the DC motor 26 side. The DC motor 26 is connected to the flexible board 25 on which the tact switch 24 is mounted, and the connector portion 25b at the tip is directly inserted into the control circuit board.

The above discharge motor assembly 3 is driven based on the cartridge discharge command generated when the tact switch 24 is pressed, and is rotated in the direction of the arrow shown in FIG. Of the sliding plate 16 by rotating
The end portion 16c is pressed in the P3 direction while abutting against c and performing the second rotation, thereby releasing the locked state. Here, in FIG. 5, a second end portion 16f that is upright and bent to the front is further formed on the left side of the end portion 16c of the sliding plate 16, and this portion is formed by a thin screwdriver or the like. The operator directly presses the rod-shaped tip through a small hole provided in the decorative panel 7 to enable the unlocked state to be released similarly to the operation of the discharge motor assembly 3, and in an emergency such as a power failure. The cartridge 100 can be taken out to the outside.

Next, FIG. 9 is a view taken along the line XX in FIG. 4, and is a partially cutaway plan view showing the sheet metal base 12 removed from the molding base 1. In the figure, the sheet metal base 12 secures a space for accommodating the cartridge 100, and the guide portion 1 that directly abuts the chamfer 107 and the like when the cartridge is inserted.
2h is formed and the convex portion 1 is screwed to the molding base 1.
2e is provided, and both sides thereof are bent to guide the cartridge 100 in an upright state to form a dovetail wall 12k. Near the guide portion 12h on the right side of the wall portion 12k, there is always urged to move in the direction of arrow M1, and when the cartridge 100 is inserted, it slides on the side surface of the case and moves in the direction of arrow M2 in the figure. Brake stopper 2
8 is provided so as to be vertically movable with respect to the ejection direction of the MOD cartridge. The brake stopper 28 is moved in the direction of the arrow M2 by the slope of the chamfered portion 107, and has a shape that remains in the original position when the cartridge is inserted by reversing the front and back.

Next, the above-mentioned arm 18 is stud 1 vertically erected by caulking at the upper left of the sheet metal base 12 in the figure.
A large torsion spring 2 rotatably supported by 2c and having a spring force sufficient to generate the above-described discharging force.
9 is hung as shown. Also, this arm 1
8, a small torsion spring 30 is rotatably provided at one end, and is rotatably provided at the other end with respect to an open pin 19 for opening and closing the shutter 103.

Furthermore, the open pin 19 is provided so as to fit into the long groove 12a formed in the sheet metal base portion 12 and follow the sliding groove 103c of the shutter 103 as the cartridge 100 is inserted. Push the end of the arrow to move in the direction of arrow S1 in the figure. At the time of discharging, the shutter is closed by the action of the urging force built in the cartridge as shown in FIG.

Since the spring force of the small torsion spring 30 is set to be smaller than that of the large torsion spring 29, the long groove 12 is inserted as the cartridge is inserted.
The arm 18 does not move even if the open pin 19 moves along a and the state shown by the broken line is obtained. The cartridge 100 is inserted further in the back, and the arm 18 directly contacts the side surface of the case, so that the arm 18 is rotated against the spring force of the large torsion spring 29.

The arm 18 described above is the sliding plate 16 described above.
It is locked to the slide member 16k, and the base 13 provided with the motor 10 is moved up and down in synchronization with the insertion of the cartridge. 10 is a plan view showing how the arm 18 locks the sliding plate 16, and FIG. 11 is shown in FIG.
FIG. 7 is an explanatory diagram of operations of 0. In FIG. 10, the cartridge is shown not inserted, and as described with reference to FIG. 4, the cartridge is fixed to the sliding plate 16 which has been biased by the pair of tension springs 14 to move in the direction of arrow P4. The contact surface 18a-2 of the head portion 18a of the arm 18 is in contact with the slide member 16k shown by the broken line in the drawing, and the sliding plate 1 resists the tension spring 14.
6 is prevented from moving in the P4 direction.

From the state shown in FIG. 10, after the arm 18 is inserted to bring the cartridge into the mounted state and the arm 18 comes into contact with the case, it is shown by the broken line in FIG. 11 against the reaction force of the large torsion spring 29. When the arm 18 is rotated from the position shown in FIG.
The contact surface 18a-2 of a is released from the state of restricting the movement of the slide member 16k, moves to the position indicated by the solid line, and stops.

Due to this movement, the pins 17 inserted into the four inclined holes 16b of the sliding plate 16 have the inclined holes 1b.
A base 1 which moves in 6b and is provided with these pins on the side surface.
3 is moved diagonally downward, the base 13 is restricted to move up and down by the guide pin 1c fixed to the molding base 1. As a result, the base 13 is moved in parallel in the arrow P1 direction, and the base 13 shown in FIG. The state shown in FIG. 5 is changed to the attached state shown in FIG.

In the state shown in FIG. 5, the flange 10a of the chucking motor 10 and the disk 120 are magnetically attracted to complete the chucking. Next, when ejecting the chucked MOD cartridge 100 to the outside, an ejection command signal is sent to the ejection motor assembly 3, and the pin 3 a of the motor assembly 3 is sent as described above. Is rotated a predetermined amount to press the end portion 16c of the sliding plate 16 in the direction of arrow P3.

As a result, the slide member 16k fixed to the slide plate 16 also moves in the direction of arrow P3, and the slide member 16k separates from the locking surface 18a-1 of the head 18a of the arm 18. Since the arm 18 has a rotating force in the direction of the arrow Q2 sufficient to eject the cartridge 100 by the biasing force of the large torsion spring 29 as described above, the slide member 16k is separated from the locking surface 18a-1 of the head portion 18a. At the same time, it returns to the position shown by the broken line in FIG. After this, the pressing action of the discharge motor assembly 3 is released to bring the slide member 16k into contact with the contact surface 18a-2 of the head 18a of the arm 18 by the action of the tension spring 14, as shown in FIG. To finish ejecting the cartridge. As described above, as a result of the structure in which the chucking motor moves to the cartridge side after the cartridge is inserted into the housing portion of the apparatus, the size and thickness can be reduced.

[0037]

As described above, according to the present invention, it is possible to provide a magneto-optical disk device which can be made compact and thin.

[Brief description of drawings]

FIG. 1A is a plan view of a MOD cartridge 100,
(B) is a side view and (c) is a bottom view.

FIG. 2 is a plan view of a magneto-optical disk device according to an embodiment.

FIG. 3 is a side view showing a main portion of FIG. 2 in a cutaway manner.

FIG. 4 is a partial external perspective view of a magneto-optical disk device,
It is a figure before inserting a cartridge.

FIG. 5 is a partial external perspective view of the magneto-optical disk device,
It is a figure after inserting a cartridge.

FIG. 6 is a plan view of the base 13.

7 is a side view of the base 13. FIG.

FIG. 8A is a plan view of the discharge motor assembly,
(B) is the same side view.

9 is a view on arrow XX in FIG. 4. FIG.

10 is a plan view showing how the arm 18 locks the sliding plate 16. FIG.

11 is an explanatory diagram of the operation of FIG.

[Explanation of symbols]

 1 molding base, 2 motor assembly (moving member), 3 discharge motor assembly (releasing means), 4 moving optical system, 5 fixed optical system, 6 motor (for tracking), 7 decorative panel, 10 motor (for disk drive) ), 11 coil (external magnetic field generation part), 12 sheet metal base part, 13 base, 14 tension spring (biasing member), 16 sliding plate (sliding member), 16a guide hole part, 16b inclined hole, 16k sliding member (Locking part), 16e hook part, 16f end part, 18 arm (regulating member), 18a head part (locking part) 19, open pin, 20 positioning pin, 24 tact switch, 29 large torsion spring, 30 small torsion spring , 100 cartridges.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Kageyama 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa, Fujitsu Limited (72) Inventor Kohiro Sato, 1015, Kamikodanaka, Nakahara-ku, Kawasaki, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Shigeru Arai 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited

Claims (4)

[Claims] 1. Motor means for applying a rotational force to a medium of a magneto-optical disk which is moved in parallel through an opening of a base and is inserted into an accommodating portion in a direction substantially orthogonal to the inserting direction. A magneto-optical disk device that is vertically moved to set a mounting position and a standby position, wherein the motor means is fixed, and a plurality of supporters are supported on the base so as to move vertically and are provided on both side surfaces along the insertion direction. A moving member having a protruding portion, an inclined groove portion having an inclination angle rising toward the opening side for guiding the protruding portion, and a locking portion set to the standby position. A sliding member movably supported on the base in a direction along the insertion direction; a biasing member that biases the sliding member toward the opening portion; It is rotatably supported by the A regulation that stores a discharge ejection biasing force against the insertion of the disc and that has a member that restrains locking with respect to the locking portion and that prevents the sliding member from moving toward the opening. Member, and the slide member is further moved to the inner side of the accommodating portion against the biasing member to release the regulation and to apply the discharge biasing force of the regulation member to the magneto-optical disk. A magneto-optical disk device comprising: 2. The moving member is integrally formed by insert-resin molding the protrusion, a guide portion that sneaks into the reference hole of the magneto-optical disk, and a support portion that is supported so as to move vertically. The magneto-optical disk device according to claim 1. 3. The magneto-optical disk device according to claim 1, wherein the regulating member is connected to an opening / closing means for opening / closing a shutter of the magneto-optical disk. 4. The magneto-optical disk device according to claim 1, wherein the releasing means includes a motor unit that rotates a predetermined amount based on a discharge command signal.