JP3504954B2 - 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 relates to a magneto-optical disk device, and more particularly to a magneto-optical disk device which is preferably applied to make it thin.

[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 shown in 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.

In this way, the central portion of the disk 120 that appears 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 portions 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 slope portion 112 to move against an urging member (not shown), and the shutter 10 is 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 to secure each dimension which is the reference dimension at the time of chucking and to obtain the reference surface P at the time of mounting. 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 been recently 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 as large as that of the 3.5 inch FD cartridge, 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

[Action] To solve the above problems and to achieve the object, according to the present invention, a storage portion for storing optical disk cartridges, the magneto-optical disk cartridge is loaded, the loaded magneto-optical disk cartridge Magneto-optical
Motor means for rotating the air disk , a moving member having the protrusions provided on both sides for fixing the motor means, and being supported so as to be vertically movable with respect to the base, and the moving member is the base. An inclined groove portion having an inclination angle for guiding the protrusion so as to move vertically with respect to the protrusion, and a locking portion for holding the motor means in the standby position via the moving member. A sliding member that is supported so as to be movable in parallel on the table; a biasing member that biases the sliding member so that the sliding member moves in parallel to the opening side of the accommodating portion; In order to hold the motor means in the standby position, the motor means is rotatably supported at the back side portion.
Of the biasing member by contacting the locking portion of the sliding member.
The movement of the sliding member due to the urging is regulated, and the engagement is performed when the magneto-optical disk cartridge is inserted.
Rotate in the contact state that maintains contact with the stopper ,
The engaged state to be engaged with the locking portion of the sliding member from the state
A regulation member for releasing the regulation of the movement of the sliding member by shifting, and at the time of ejecting the magneto-optical disc cartridge.
At this time, the sliding member is moved in parallel in the inner side direction of the accommodating portion against the biasing member to lock the regulating member and the locking member.
And a releasing member for releasing the engagement state with the member, and a moving member having a motor unit fixed in a direction orthogonal to the inserting direction of the magneto-optical disc is provided between the mounting position and the standby position. The movement allows the device to be made thinner.

[0007] Preferably, the moving member integrally includes the protruding portion, a positioning pin inserted into a reference hole of the magneto-optical disk cartridge , and a supporting portion supported so as to move vertically. By molding, the weight of the moving member is reduced, the durability of the mechanism is improved, and electrical insulation is achieved. Further, preferably, the regulating member is provided at one end of a rotatable arm, and the opening / closing means for opening / closing the shutter of the magneto-optical disk cartridge is provided at the other end of the arm, thereby reducing the number of parts. It can be so. And, preferably, the releasing means is provided with a motor section which makes a predetermined rotation based on the discharge command signal, and the magneto-optical disk cart.
Works to automatically eject ridges .

[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 part of FIG. 2 in a cutaway manner. In both figures, the base of the device is a molding base 1 (base
Base) and a sheet metal base 12 formed by press-bending a non-magnetic SUS thin plate material (a thickness of about 0.5 mm)
1 and 2 are integrated with each other by screw tightening, a housing portion for inserting and ejecting the cartridge 100 is provided in the sheet metal base portion 12, and each component described later is attached to the molding base portion 1.

A cartridge 100 is provided with each of these components.
Described in order from the opening side through which the molding base 1 is placed,
The pin 3a has a predetermined angle on the inside of the side wall according to the electric signal.
By rotating and stopping, the ejection motor assembly 3 for ejecting the mounted cartridge 100 is fixed. 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 a 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 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 type motor, so that the moving optical system 4 is energized by 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.

[0013] or more of the movable optical system 4 of the configuration is mounted lens 4k and the reflection mirror 4m with automatically adjust the function to focus on the magneto-optical di <br/> scan click surface 120a is shaped base 1 After the laser beam output from the fixed optical system 5 fixed on the right side of the figure is made to act on the MOD cartridge surface 120a, the laser beam is made incident on the fixed optical system 5 to perform magneto-optical recording and reproduction.

As described above, each component is housed in the space sandwiched 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 can be made as small as possible. That is, after the cartridge 100 is inserted,
If the cartridge 100 is moved up and down and 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, in synchronization with the insertion of the cartridge 100, the spindle motor 10 is magnetically attracted to the metal core 121 of the disk 120 and chucked, 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 this 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
The base 3 is provided by inserting 3a into the guide pin 1c.
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 project by a predetermined amount.

On the other hand, the sliding plate 1 is bent so as to have an inclined hole 16b for slidably guiding each pin 17.
6 is the above-described head-equipped pin 15 fixed to the molding base 1.
The 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 headed pin 15, the guide holes 16a are slid as shown in the drawing. 1
6a is prevented from coming 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, and 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 to move, the slide member 1 formed of a resin having high lubricity and fixed to the tip end 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 of the arm 18 is in contact with 6k (locking portion) . In addition, the sliding plate 1
6 does not move in the direction of arrow P4, and the base 13
Can be held at a predetermined position.

As will be described later, the arm 18 has an insertion front end surface when the cartridge 100 is inserted.
Is rotated in the direction of arrow Q1 in the figure, and as a result, the arm 18
The contact state between the head portion 18a and the slide member 16k is released, and the sliding plate 16 is moved in the arrow P4 direction by the pulling action of the spring 14 in the stretched state. As a result, since each pin 17 moves downward along the inclined groove 16b, the base 13 moves in the arrow P1 direction.

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 moved to the arrow Q1 in FIG.
To rotate the head 18a and slide member 16k into contact with each other.
The state is changed from the contact state to the engagement state, the base 13 is moved in the direction of arrow P1, and the spindle motor 10 for driving the disk provided on the base 13 is set to the chucking state for 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 pressed by the pin 3a of the above-described ejection motor assembly 3 in the direction of arrow P3, and the sliding plate 16 is pushed. A force that opposes the tensile force of the spring 14 stretched over is applied, and the base 13 is again translated in the direction of arrow P2 as shown in FIG. 4 to release the chucking state. Next, the slide member 16k fixed to the end of the sliding plate 16 and the head 1 of the arm 18
The engagement state of 8a is released.

On the other hand, the arm 18 is provided with a large torsion spring as will be described later, and since the arm 18 is urged to rotate in the direction of the arrow Q2 in the figure with a strong force, the rotation of the arm 18 is prevented. The side surface of the cartridge 100 is pushed and ejected for operation. Furthermore, the shutter 103 is opened as shown by abutting against 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 screwing to the base 13 which is molded mounted integrally 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 be inserted into the cartridge 2, so that the cartridge 100 can be positioned relative to the base 13 prior to the chucking operation. Further, even though 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 DC 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 . In order to make this predetermined rotation, a permanent magnet 23a fixed to the disk 23 is provided on the DC motor 26 side.
The Hall element sensor 22 that operates when is approached is fixed. Further, 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 to release 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. When the operator directly presses the rod-shaped tip through a small hole provided in the decorative panel 7, the locked state can be released similarly to the action of the discharge motor assembly 3, and in an emergency such as a power failure. The cartridge 100 can be taken out.

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 this figure, the sheet metal base portion 12 secures a space for accommodating the cartridge 100, and the guide portion 1 is in direct contact with the chamfered portion 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 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 movable vertically to the ejection direction of the MOD cartridge. The brake stopper 28 is moved in the direction of the arrow M2 by the inclined surface 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 crimping 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 further 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.

Further, 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 slide 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. Further, at the time of discharging, the shutter is closed by the action of the urging force built in the cartridge as shown in FIG.

Here, 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 the line a and enters the state shown by the broken line. 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 has a head 18
a has to abut the slide member 16k of the above sliding plate 16, in conjunction with the insertion of the cartridge, performing vertical movement of the base 13 provided with a motor 10. FIG. 10 shows the arm 18
Between the head portion 18a of the head and the slide member 16k of the sliding plate 16
FIG. 11 is a plan view showing a contact state , and FIG. 11 shows a head portion 18a.
And the slide member 16k shift from the contact state to the engagement state
It is an operation explanatory view when doing . FIG. 10 shows a state in which the cartridge is 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. A slide member 16 shown by a broken line in the drawing
against k, the abutting surface of the head portion 18a of the arm 18 18A-
2 are in contact with each other and restrict the sliding plate 16 from moving in the P4 direction against the tension spring 14.

The cartridge is inserted from the state of FIG.
Then, after the arm 18 contacts the case,
When it is rotated from the position shown by the broken line in FIG. 11 against the reaction force of the large torsion spring 29 and then moved to the position shown by the solid line, the contact surface 18 of the head 18a of the arm 18
a-2 is the movement of the slide member 16k (that is, the sliding plate 16).
The state of restricting the movement is released, and the movement is moved to the position indicated by the solid line and stopped (the head 18a and the slide member 16k are
Engagement state) .

As a result of this movement, the pins 17 inserted into the four inclined holes 16b of the sliding plate 16 are inserted into the inclined holes 1b.
6b which moves inside 6b and has these pins on the side
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 translated in the direction of arrow P1. 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 MOD cartridge 100 chucked as described above to the outside, an ejection command signal is sent to the ejection motor assembly 3, and the pin 3a of the motor assembly 3 is sent as described above. The end portion 1 of the sliding plate 16 by rotating the sliding plate 16 in a predetermined direction.
6c is pressed 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,
The slide member 16k separates from the engaging surface 18a-1 of the head 18a of the arm 18. As described above, the arm 18 has sufficient turning force in the direction of arrow Q2 to eject the cartridge 100 by the urging force of the large torsion spring 29.
From the engaging surface 18a-1 of the head portion 18a to the slide member 16k
Is released, and returns to the position shown by the broken line in FIG. Thereafter, 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 accommodating portion of the apparatus, it is possible to reduce the size and size.

[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 part 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.

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

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.

FIG. 10 shows a head 18a of an arm 18 and a sliding plate 16
It is a top view showing the contact state with the id member 16k .

FIG. 11: Head 18a and sliding member 16k are in contact with each other
It is an operation explanatory view when changing from a state to an engagement state .

[Explanation of symbols]

1 molding base (base) , 2 motor assembly , 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 generating part), 12 sheet metal base part (accommodating part) , 13 base (moving member) , 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 , 18a head part ( regulating member ), 19 open pin, 20 positioning pin, 24 tact switch, 29 large torsion spring, 30 small torsion springs, 100 cartridges.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Kageyama 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor, Kohiro Sato, 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Shigeru Arai 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (56) Reference JP-A-2-244455 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 25/04 101 G11B 17/04

Claims (4)

(57) [Claims] 1. A a housing portion for housing the optical magnetic disk cartridge, the optical disk cartridge is mounted, a motor means for rotating the magneto-optical disk of the mounted optical disk cartridges, and fixing the motor means, A moving member having protrusions provided on both sides so as to be supported so as to be vertically movable with respect to the base, and for guiding the protrusions so that the moving member moves vertically with respect to the base. A sliding member including an inclined groove portion having an inclination angle and a locking portion for holding the motor means at a standby position via the moving member, and a sliding member supported in parallel translation on the base. an urging member moving member for biasing the slide member to translate toward the opening portion side direction of said housing portion, rotatably axially supported in the back side portion of the housing portion, the motor
Of the sliding member in order to hold the slider means in the standby position.
The sliding member is brought into contact with the locking portion and urged by the urging member.
While restricting the movement of the moving member, the magneto-optical disc Ca
When the bridge is inserted, the contact with the locking part is maintained.
By rotating in the held abutting state and shifting from the abutting state to the engaging state in which the engaging portion of the sliding member is engaged ,
A restriction member for canceling the restriction of movement of the sliding member; and a parallel movement of the sliding member against the biasing member in the inner side direction of the accommodating portion when the magneto-optical disk cartridge is ejected . The restriction member and the locking portion
A releasing means for releasing the engaged state , and a magneto-optical disk device. 2. The moving member integrally inserts the protrusion, a positioning pin inserted into a reference hole of the magneto-optical disk cartridge , and a supporting portion supported to move vertically. A resin-molded product.
The magneto-optical disk device described in 1. 3. The regulating member is provided at one end of a rotatable arm, and the opening / closing means for opening / closing the shutter of the magneto-optical disk cartridge is provided at the other end of the arm. The magneto-optical disk device according to claim 1. 4. The magneto-optical disk device according to claim 1, wherein the releasing means is provided with a motor section that makes a predetermined rotation based on an ejection command signal.