JP3277431B2 - Magneto-optical disk device and optical disk device - 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 an optical disk device of a magnetic field modulation overwrite system for recording and reproducing information signals on and from a magneto-optical disk.

[0002]

2. Description of the Related Art In general, a magneto-optical disk device is known as a disk device for writing and / or reading information signals to or from a magneto-optical disk rotatably housed in a disk cartridge. .

This is a cartridge loading mechanism having a cartridge holder for holding a disk cartridge, a spindle motor provided below the cartridge loading mechanism for rotating and driving the magneto-optical disk, and a rotary table having a disk table for holding the magneto-optical disk. A mechanism, an optical pickup device having an objective lens provided behind the rotating mechanism, an external magnetic field generation device having a magnetic field applying head provided above the optical pickup device, and an external magnetic field generation device and the optical pickup device. It is roughly constituted by an elevating mechanism and the like that is provided at the front and moves up and down the rotating mechanism.

In the magneto-optical disk drive configured as described above, after the disk cartridge is transported to a predetermined cartridge mounting position, the magneto-optical disk is rotated at the cartridge mounting position, and an information signal is transmitted to the magneto-optical disk. Is written and read.

In this type of magneto-optical disk drive, the magnetic field applying head is retracted (unloaded state) when the disk cartridge is pulled into the disk drive main body, and is brought into contact with the magneto-optical disk or is opposed to it with a small gap. (Loading state) A loading / unloading device for a magnetic field applying head is provided.

Conventionally, this type of loading / unloading device for a magnetic field applying head is disclosed in, for example,
Japanese Patent Application Laid-Open No. 4069/1991 and a device equipped with a solenoid disclosed in Japanese Utility Model Laid-Open No. 3-80562 are employed.

These are provided on a carriage on which the magnetic field applying head advances and retreats with respect to the track position of the magneto-optical disk, or on a fixed portion of the disk drive main body. The loading and unloading of the magnetic field applying head are performed by energizing a piezoelectric actuator or solenoid. It is configured to perform loading.

[0008]

However, in the conventional magneto-optical disk drive, a drive source for maintaining the loading state and the unloading state of the magnetic field applying head and a drive for ejecting the magneto-optical disk out of the disk drive body, for example. A separate source had to be provided. As a result, there has been a problem that the number of parts increases and the internal structure becomes complicated.

The present invention has been made in view of such circumstances, and provides a magneto-optical disk drive capable of reducing the number of components and thereby simplifying the internal structure.

[0010]

A magneto-optical disk drive according to the present invention holds a magnetic applying head and an objective lens.
Key that can move in the radial direction of the disk of the magneto-optical recording medium.
Carriage and the carriage in the radial direction of the disc.
And unlocking hands to lock and unlock the movement of
Stage and a moving means for moving operation between a loading position and the unloading position the magnetic field application head, and a discharge mechanism for discharging the magneto-optical recording medium, a drive for driving the discharge mechanism and the moving means Motor and
The drive motor transmits a moving operation force to the moving means by rotating in a first direction from a reference position, and unlocks the lock / unlock means.
A rotating body that transmits a motor operating force and transmits a motor driving force to the ejection mechanism by rotating from a reference position in a second direction opposite to the first direction.

Another invention of the present invention (the invention of claim 3 ) is:
An optical disk device including a disk device main body having a built-in carriage that holds an objective lens and is movable in a disk radial direction of an optical recording medium at a disk mounting position,
An ejection mechanism for ejecting the optical recording medium is provided in the disc device main body, and the disc radius of the carriage is
Lock / unlock means for locking / unlocking movement in the direction , and a drive motor for driving the lock / unlock means and the discharge mechanism are provided. The motor drive force is transmitted to the lock / unlock means by rotating in the direction, and the motor drive force is transmitted to the discharge mechanism by rotating in the second direction opposite to the first direction from the reference position. The moving body is connected.

[0012]

The magneto-optical disk device and optical disk of the present invention
In the device, a common drive motor
The drive operation of the unlocking means and the discharge mechanism is performed by a common drive motor.

In another aspect (claim 4) of the present invention, the drive operation of the lock / unlock means and the discharge mechanism is performed by a common drive motor.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to the embodiments shown in the drawings.

First, a disk cartridge in which a magneto-optical disk mounted on the magneto-optical disk device is rotatably stored will be described with reference to FIGS. 30 and 31.

In FIG. 1, a disk cartridge 201 has a magneto-optical disk 202 formed in a disk shape.
And a cartridge 203 for rotatably storing the magneto-optical disk 202.

A magnetic recording layer is formed in the data recording area of the magneto-optical disk 202, and information signals are written and / or read on the magnetic recording layer by magneto-optical means. The magneto-optical disk 202 has one main surface serving as a signal recording surface, and a disk-shaped chucking hub 202a made of a metal material is provided at the center of the disk.

On the other hand, a cartridge 203 has a pair of upper and lower halves 204 and 205 each having a substantially box shape and having a sufficient space for accommodating the magneto-optical disk 202 therein.
The halves 204 and 205 are formed by abutting each other. On the front surface 209 of the cartridge 203, there is provided a shutter opening member fitting portion 224 into which a shutter opening pin (described later) of the cartridge holder is fitted to open the cartridge opening.
A cartridge draw-in pin fitting hole 228 into which a cartridge hold pin (described later) fits is provided near the front part of the one side surface part 207.

In the lower half 205 of the cartridge 203, cartridge positioning pin engaging holes 225 and 226 are provided for engaging cartridge positioning pins (described later) for horizontally positioning the disk cartridge 201 in the main body of the magneto-optical disk apparatus. In the vicinity of the cartridge positioning pin engagement hole 226, an erroneous erasure prevention member 227 for selecting whether or not the information signal can be written to the magneto-optical disk 202 is provided. Further, the lower half 205 includes the magneto-optical disk 20.
2 and the chucking hub 202
a for exposing a to the outside of the cartridge
6 are provided.

The first opening 206 is provided at a substantially central portion in the left-right direction between both surfaces of one side surface 207 and the other side surface 208 of the cartridge 203.
When the disk cartridge 201 is mounted in the main body of the magneto-optical disk drive, the chucking hub 202a is rotated by a disk rotation drive mechanism. The optical disk 202 is configured to face a disk table (to be described later) and a signal recording surface of the magneto-optical disk 202 to an objective lens of an optical pickup device (to be described later).

The upper half 204 has a second opening 216 located near the front surface 209 of the cartridge 203 and corresponding to the first opening 206.

The second opening 216 is formed as a rectangular opening in a plan view having a size large enough to expose a part of the other main surface of the magneto-optical disk 202 to the outside of the cartridge. When the cartridge 201 is mounted in the magneto-optical disk device main body, the magneto-optical disk 2
The other main surface portion 02 is configured to face a magnetic field applying head (described later).

The front portion 2 of the cartridge 203
09, a notch recess is provided at a position corresponding to each of the openings 206 and 216 so that the magnetic field applying head and the optical pickup device can easily enter the magneto-optical disk 202 in close proximity to each main surface. 206a, 21
6a is provided. That is, this cartridge 2
The thickness of the central part of the front part 03 near the front part 209 is set to a small thickness in a part corresponding to the first opening 206 and the second opening 216.

The cartridge 203 has a shutter member 211 for opening and closing the openings 206 and 216.
Are slidably mounted.

The shutter member 211 includes a first shutter plate 212 for closing the first opening 206 of the lower half 205, and a second shutter of the upper half 204 provided in parallel with the first shutter plate 212. A second shutter plate 213 for closing the opening 216, and a second shutter plate 213;
And a connecting piece 214 for connecting the base ends of the first shutter plate 212 to each other.

The first shutter plate portion 212 is formed as a rectangular body narrow enough to close the first opening 206. This first shutter plate portion 212
The leading end is pressed and supported by the shutter holding plate 215, thereby preventing the cartridge 203 from rising from the cartridge 203.

On the other hand, the second shutter plate 213 is formed as a wide rectangular body large enough to close at least the second opening 216.

The thickness of the connecting piece 214 is set to be substantially equal to the thickness of the central thin portion of the cartridge 203. A torsion coil spring (not shown) that constantly moves and biases the shutter member 211 in a direction to close the first opening 206 and the second opening 216 is provided on the connecting piece 214 and the cartridge 203. ) Of each spring is locked.

The arrow X in FIG.
Reference numeral 1 denotes a direction in which the shutter moves between a position at which the openings 206 and 216 are closed and a position at which the openings 206 and 216 are opened.

Next, a magneto-optical disk device for recording and / or reproducing data on and from the magneto-optical disk 202 housed in the disk cartridge 201 thus constructed will be described with reference to FIGS. .

As shown in FIGS. 2 and 3, the magneto-optical disk drive of this embodiment has a chassis 1 having a substantially U-shaped cross section.
And the magneto-optical disk 20 of the disk cartridge 201
A housing (disk device main body) 3 which incorporates various mechanisms for performing recording / reproduction on the main body 2; and a front surface provided on the front surface of the housing 3 and exposed to the outside when incorporated in, for example, a computer main body or a subsystem. And a panel 4.

The front panel 4 is provided with a cartridge slot 5 for inserting and removing the disk cartridge 201 into and out of the housing 3. The cartridge slot 5 is opened and closed to prevent dust from entering. The lid 6 is provided rotatably. The front panel 4 is provided with a light emitting element 7 for displaying a recording / reproducing operation state for the magneto-optical disk 202 and an eject button 8 for ejecting the disk cartridge 201.

On the other hand, as shown in FIG. 7, the housing 3 has a cartridge loading / unloading mechanism (A) having a cartridge holder 9 for holding the disc cartridge 201 so as to be able to be inserted and removed, and the cartridge loading / unloading mechanism. A disk rotating mechanism (B) provided below the mechanism (A) and having a spindle motor 10 for rotatingly driving the magneto-optical disk 202 and a disk table (spindle holder described later) for holding the magneto-optical disk 202; An optical pickup device (C) provided behind the disk rotation mechanism (B) and having the objective lens 12, and an external magnetic field generation unit provided above the optical pickup device (C) and having a magnetic field applying head for the magneto-optical disk 202. Equipment (D)
A holding mechanism (E) provided in the vicinity of the external magnetic field generator (D) for holding the magnetic field applying head at the loading position and the unloading position, and a magnetic field applying device provided on one side of the holding mechanism (E). A driving mechanism (F) for applying a driving force for loading to the head, an elevating mechanism (G) provided in front of the driving mechanism (F) to elevate and lower the disk rotating mechanism (B), and an elevating mechanism ( A transmission mechanism (H) for transmitting a driving force for loading and unloading is installed in the holding mechanism (E) provided behind the G).

In FIG. 4, a mounting portion 1b for screwing the cartridge holder 9 at a predetermined height from the chassis bottom surface 1a is provided at the front end of both sides of the chassis denoted by reference numeral 1. I have. The chassis 1 is provided with a plurality of ribs 14 located between the mounting portions 1b and projecting at predetermined intervals in the circumferential direction. The ribs 14 have openings 15a through which the spindle motor 10 is inserted. And a spindle motor positioning member 15 having a spindle elevating guide pin 15b protruding downward. And this chassis 1
On the upper side, two pairs of guide columns 16 and 17 which are opposed to each other are provided upright on the outer side of the circumference connecting the ribs 14.

Next, various mechanisms (A) to (G) for recording and reproducing data on and from the magneto-optical disk 202 will be described with reference to FIGS. 1 and 3 to 29.

(A) Cartridge Loading / Unloading Mechanism The cartridge loading / unloading mechanism (A) has an auto-injection mechanism (which automatically pulls the disk cartridge 201 in the cartridge insertion direction and automatically pushes the disk cartridge 201 in the cartridge discharge direction). A ₁₎
Is provided.

The cartridge holder 9 is formed of a flat box having a rectangular cartridge insertion / removal opening 18 opened in the front-rear direction and a guide groove 19 formed of a long hole extending in the front-rear direction. In the vicinity of the corner of the cartridge insertion opening 18 of the cartridge holder 9, a plurality of insertion guide pieces 20, 21 for guiding the disk cartridge 201 at the time of insertion and extraction of the cartridge are provided. The cartridge holder 9 is provided with a shutter opening device (A-a) for automatically opening the shutter member 211 of the disk cartridge 201.

The shutter opening device (A-a) moves along the cam groove 22 having a locus for opening the shutter member 211 in conjunction with the insertion operation of the disc cartridge 201. And a shutter release pin support member 24 having a shutter release pin 23.

The cam groove 22 is formed with an inclined portion 22 which is inclined obliquely in the insertion direction of the disk cartridge 201.
a, an arc-shaped portion 22b continuous with the inclined portion 22a,
The cam groove is formed by a linear portion 22c which is continuous with the arc-shaped portion 22b and substantially parallel to the insertion direction of the disk cartridge 201.

On the other hand, the shutter release pin support member 24
It is formed of a plate-like body including a front end 24a and a rear end 24b having a substantially semicircular shape in plan view and a central portion 24c having a substantially rectangular shape in plan view. This shutter release pin support member 24
A guide groove 24d formed from a long hole extending from the rear end portion 24b toward the substantially central portion in the longitudinal direction and engaging with a movable guide pin 26 with a flange that moves along the guide groove 19 is formed. Is provided. The chassis open pin support member 24 is provided with a tension coil spring 27.
Thus, the shutter release pin 23 is constantly urged in a direction to position the shutter release pin 23 at the start end of the cam groove 22.

A cartridge insertion position regulating piece 28 for regulating the position of the disk cartridge 201 in the insertion direction is provided on the left side of the rear edge of the ceiling plate 9a of the cartridge holder 9 so as to project rearward of the cartridge holder. It is bent downward.

Further, cutouts 29 are formed in the cartridge holder 9 at substantially center portions on both side edges thereof, and are opened to the inside and outside of the holder. The cutouts 29 face the respective cutouts 29, and the disk cartridge 201 is positioned in the cartridge height direction. A cartridge pressing piece 31 that is in pressure contact with 30 is attached.

The cartridge pressing piece 31 is supported by a support portion 31a fixed to the lower plate portion of the cartridge holder 9.
And the disk cartridge 2 only during loading.
01, and a cartridge avoiding portion 31c for avoiding the cartridge pressing portion 31b to a non-contact position with respect to the disk cartridge 201 during unloading, of which the support portion 31a and the At the connection portion with the cartridge pressing portion 31b, when shifting from the loading state to the unloading state, a cartridge pressing operation piece (described later) of a slide plate (described later) and the cartridge pressing piece 3
A bent portion 31d for preventing the hook 1 from being caught is provided.

Next, the auto-injection mechanism (A ₁ ) of the cartridge holder 9 will be described.

This auto-injection mechanism (A ₁ )
A first injection plate 170 that moves forward and backward in the direction of insertion and removal of the disk cartridge 201, and a second injection plate 17 that draws the disk cartridge 201 by moving the first injection plate 170
1 and the first injection plate 1 when the cartridge is retracted by the second injection plate 171.
A third injection plate 17 for applying a forcible moving force to the cartridge holder 9 in the depth direction of the cartridge holder 9.
And 2.

Among them, the first injection plate 170
Is provided on one side edge of the lower plate portion of the cartridge holder 9. This first injection plate 170
Are a pair of guide shafts 17 erected on the lower plate (not shown) of the cartridge holder 9 at both ends of the plate.
3,174 and engaged with the disc cartridge 20.
1, a guide groove 175 comprising a long hole extending in the insertion / extraction direction.
176 are provided, and these guide grooves 175 and 17 are provided.
6, the guide shafts 173 and 174 are inserted and engaged with each other.
Is configured to be able to advance and retreat in the direction indicated by arrow A.

The first injection plate 170 is provided with a notch 177 that is opened in one direction perpendicular to the direction in which the disc cartridge 201 is inserted and removed.
Further, a cartridge contact portion 178 with which the shutter member 211 of the disc cartridge 201 abuts is provided at a depth rear end portion of the first injection plate 170. Further, a trigger arm rotating operation piece 181 is provided at the rearmost end of the first injection plate 170 in the depth direction so as to come into contact with a trigger arm pin 180 erected on the trigger arm 179 on the chassis 1. I have.

The trigger arm 179 which comes into contact with the trigger arm rotating operation piece 181 has a function of maintaining an unloading state of a slide plate described later, and is provided on a lower plate portion (not shown) of the cartridge holder 9. Support shaft 18
2 are provided so as to be freely rotatable. The trigger arm 179 is provided with a locking claw 179a that engages with a slide plate locking pin described later. The trigger arm 179 includes a torsion coil spring 183.
The locking pawls 179a are constantly urged to rotate in the direction of engagement with the slide plate locking pins (described later) by means of (shown in FIGS. 18 to 22 and FIG. 26).

On the other hand, the second of the auto-injection mechanism A ₁
The injection plate 171 is located on the rear end side of the first injection plate 170 and is supported on a lower plate (not shown) of the cartridge holder 9.
4 so as to be pivotable in the direction indicated by arrow B in FIG. The second injection plate 171 is provided with a cartridge hold pin 185 that fits into the cartridge pull-in pin fitting hole 228 of the disk cartridge 201 inserted into the cartridge holder 9 from the cartridge insertion opening 18 and the cartridge hold pin 185. The guide shaft 174 is connected to the guide groove 176.
A cam groove 186 is provided so as to pass therethrough and engage therewith.

Of these, the cartridge insertion hole 2
Holder Pin 185 Fittingly Engaged with Cartridge 28
Is located outside the cartridge holder before the disc cartridge 201 is inserted into the cartridge holder 9, and
01 is inserted into the cartridge holder 9,
The cartridge retraction fitting hole 228 is located at a position opposite to the cartridge retraction fitting hole 228, and is rotated by rotation of the second injector plate 171.
It is configured to go inside.

The third injection plate 172 of the auto-injection mechanism A ₁ is configured to be rotatable about a support shaft 187 on the lower plate of the cartridge holder 9. At one end of the third injection plate 172, an injection plate operation pin 188 that engages with the notch 177 is implanted, and at the other end, an injection plate holding piece of a slide plate that projects downward. Injection plate holding pins 189 that can be engaged with (described later) are implanted. The third injection plate 172 is constantly urged to rotate in the direction indicated by the arrow C in FIG. 6 by the injection plate operation pin 188 and the tension coil spring 190 locked on the guide shaft 174. .

(B) Disk Rotation Mechanism The disk rotation mechanism (B) is provided with the spindle motor 10 that moves in the direction of approaching / separating from the disk cartridge 201 by the elevating mechanism (G).

The spindle motor 10 has a concave portion 32a opening upward (toward the disk mounting side) and the opening 1
5a is provided in a cylindrical spindle holder 32 having a motor mounting portion 32b facing the lower peripheral edge.

A magnet 33 for attracting the chucking hub 202a of the magneto-optical disk 202 is accommodated in a concave portion 32a of the holder 32. The center of the magnet 33 has a spindle shaft 10a of the spindle motor 10. Is provided with an insertion hole 33a through which is inserted.
A flat disk mounting surface (disk table surface) 34 on which the magneto-optical disk 202 is mounted is formed on the periphery of the opening of the concave portion 32a. The position of the disk mounting surface 34 in the height direction depends on the spindle shaft 10.
It is set at a position slightly lower than the tip of a.

The spindle mounting guide pin 15 is provided on the motor mounting portion 32b of the spindle holder 32.
A guide hole 32A for elevating the spindle through which b is inserted is provided.

(C) Optical Pickup Device The optical pickup device (C) is configured to irradiate a laser beam to the signal recording surface of the magneto-optical disk 202 in the disk mounting portion in the housing 3. I have. The optical pickup device (C) is different from the conventional integrated optical system, and is a separated optical system in which the movable part is lightened in order to cope with high-speed access. That is, the optical pickup device includes a fixed optical system 35 having a laser diode as a light source used for recording and reproduction, a signal detector used for performing focus and tracking control, a signal detector for detecting a recording signal, and the like. Optical system 35
A carriage 37 having the objective lens 12 for condensing the light beam from the optical disk 202 on the signal recording surface of the magneto-optical disk 202, and a galvano mirror 38 located behind the carriage 37 and used for performing tracking control. And are separately provided on the chassis 1.

This separation optical system is composed of the galvanomirror 3
Reference numeral 8 denotes a corner portion, and the carriage 37 and the fixed optical system 35 are disposed so as to be substantially L-shaped in a plan view with both ends thereof.

The galvanomirror 38 reflects the light beam emitted from the fixed optical system 35, guides the reflected light beam to the optical system of the carriage 37, and performs tracking control by changing the angle of the mirror reflection surface. belongs to.

The carriage 37 is mounted on the chassis 1.
Are respectively held on two guide shafts 39 parallel to each other at a predetermined interval in the left-right direction with respect to each other. On one side surface of the carriage 37, two pairs of bearings 40 are provided so that each pair of bearing rotation axes is
On the other side, a pair of bearings 40 are similarly positioned with their bearing rotation axes set at an angle of 90 ° to each other. The carriage 37 is provided with an elastic body 41 that applies a repulsive force to one of the bearings 40 of the pair in such a direction that the angle between the rotating shafts of the two bearings is smaller than 90 °. Has been fixed.

On both sides of the carriage 37, linear motors 42 for driving the carriage are provided. The linear motor 42 includes a frame-shaped coil 43 protruding to both sides of the carriage 37, a center yoke 67, a magnet 44, and a lower yoke 45 which face each other through a part of the coil 43. .

Further, the carriage 37 is provided with a lens holder 47 for holding the objective lens 12 via two elastic members 48 which are arranged in parallel in the vertical direction.
The lens holder 47 is configured to be displaceable in the focus direction by a magnetic circuit 49. In addition,
The magnetic circuit 49 includes a frame-shaped coil 50 projecting to both sides of the objective lens 12, a center yoke 51, a magnet 52, and a side yoke 53 which face each other via a part of the coil 50. .

Further, the carriage 37 is provided with a beam passage hole 37 b for guiding a light beam from the fixed optical system 35 to the objective lens 12, and is provided at a position directly below the objective lens 12. Up mirror 5
4 is fixed.

(D) External Magnetic Field Generating Device The external magnetic field generating device (D)
And a slider 59 (hereinafter, referred to as a "magnetic field applying head") incorporating a magnetic field applying head for applying a predetermined external magnetic field to the signal recording surface of the carriage 37 at the rear end of the carriage 37. ). The magnetic field applying head 59 of the external magnetic field generator (D) is constituted by a floating magnetic head so as to cope with magnetic field modulation overwrite.

(E) Holding Mechanism The holding mechanism (E) is attached to the rear end of the carriage 37 and has notches 56a, 5
6b has notches 56 facing each other.
Each of the notches 56a, 56b has a magnetic material 57A, 5
7B, and a holding plate 57 provided above the holding plate 57 and rotatably held at the rear end of the carriage 37 via a rising portion 37a between the magnetic members 57A and 57B. A lifter 58 for holding the facing magnet 66; and a head arm 60 provided above the lifter 58 and held by the rising portion 37a of the carriage 37 so as to be elastically rotatable and hold the magnetic field applying head 59. The head arm 60 and the lifter 58 are separated from the loading position where the magnetic field applying head 59 can apply a magnetic field to the magneto-optical disk 202, and the magnetic field applying head 59 is separated from the loading position on the side opposite to the disk mounting surface 34. It is configured to be able to hold in the unloading position.

The lifter 58 of the holding mechanism (E) includes a base piece 62 having a pivot pin 61 at the center thereof, and the head arm 6 provided integrally with the front end edge of the base piece 62.
The arm support 63 has a substantially U-shape in cross section having an arm support 63 a capable of holding a zero at the front end thereof. The arm support 63 is provided behind the arm support 63 and is integrally formed with the rear end edge of the base piece 62. A bent portion 64a formed and protruding to one side.
And a driving force receiving portion 64 having an L-shape in plan view and a lower portion provided between the driving force receiving portion 64 and integrally formed with the base portion 62, and a part thereof is provided between the magnetic members 57A and 57B. 1 and a magnet support piece 65 for holding the magnet 66 so as to face it.
As shown in FIG. 0, the magnetic field applying head 59 is configured to be attracted to the magnetic body 57A when the magnetic field applying head 59 is unloaded, and as shown in FIG. .

On the other hand, the head arm 60 is located at a position where the magnetic field applying head 59 is separated from the signal recording surface of the magneto-optical disk 202 in the unloading state as shown in FIG. When,
As shown in FIG. 11, the magnetic field applying head 59 is located at a position where the magnetic field applying head 59 comes into contact with the signal recording surface of the magneto-optical disk 202 by a pressing force of about several grams to about 10 grams in the loading state.

(F) Drive Mechanism The drive mechanism (F) is a drive source for releasing the locked state of the lifter 58 by the transmission mechanism (H) and a drive source for discharging the disk cartridge 201 out of the housing 3. A drive motor 70 serving as a drive source;
Becomes a cylindrical pin 71 0 to be connected to project forward and backward directions perpendicular to the direction of the carriage 37 from the transmission gear 72 having a peripheral edge of one side, showing these transmission gear 72 in the arrow R ₁ in FIG. 17 In this direction, the pin 71 is moved from the fixed position (reference position) a to the fixed position b to return a slide plate, which will be described later, from the loading position to the unloading position.
2 applying the lifter 58 twice the power through the moving operation by transmitting mechanism (H) toward the fixed position b the pin 71 from the fixed position a by rotating in the direction indicated by arrow R ₂ in FIG. It is configured to be able to.

[0068] Thus, the transmission gear 72 is rotated in the direction indicated by the arrow R ₁ in FIG. 17, when the pin 71 is displaced toward the fixed position b from the fixed position a, the discharging operation of the disc cartridge 201 Done. Furthermore, the transmission gear 72 is rotated in the direction indicated by arrow R ₂ in FIG. 17,
When the pin 71 is displaced from the fixed position a toward the fixed position b, the lock (shipping lock) of the lifter 58 is released by driving the transmission mechanism (H), and the carriage 37 is at the outermost position of the disk. Then, loading of the magnetic field applying head 59 onto the magneto-optical disk 202 is performed.

(G) Elevating Mechanism The elevating mechanism (G) is provided above the chassis 1 so as to be capable of ascending and descending, and is a cartridge positioning pin 73 for positioning the disk cartridge 201 and a disk rotating mechanism for rotating the magneto-optical disk 202. Mechanism (B)
Lifting plate 74 having a substantially T-shape in plan view and holding the disk cartridge 201 provided below the lifting plate 74.
And a generally U-shaped slide plate 75 in a plan view which advances and retreats in the front-rear direction with the loading and unloading operations.

A spring locking shaft (also serving as a guide shaft) 7 protruding above the chassis 1 is provided substantially at the center in the front-rear direction and at the rear end of both sides of the slide plate 75 of the lifting mechanism (G).
Elongated holes 78 and 79 are provided to face the guide shaft 6 and the guide shaft 77, respectively.

In the vicinity of each elongated hole 78 substantially at the center in the front-rear direction of the slide plate 75, inclined grooves 80 having a downward slope extending obliquely forward and communicating with these inclined grooves 80 extend in the horizontal direction. First cam piece 82 having parallel grooves 81
An L-shaped slide plate return piece 83 that extends rearward and is engageable with the pin 71 near the motor-side elongated hole of the elongated hole 79 on the rear end edge side, and is bent upward and forward and backward. A spring engagement piece 84 having a through-hole 84a opening at the bottom is integrally provided. The slide plate 75 has, on both side edges at the front end thereof, inclined grooves 85 having a downward slope extending obliquely forward and parallel grooves 86 communicating with the inclined grooves 85 and extending in the horizontal direction. A cam piece 87 is provided, and a cartridge pressing operation piece 88 having a projection 88a capable of pressing the cartridge pressing piece 31 is formed in a bent portion substantially at the center of the outermost edge. Further, at the rear end of one side edge of the slide plate 75, there is provided a columnar slide plate locking pin 75a with which the locking claw 179a of the trigger arm 179 can be engaged. The portion is provided with an injection plate holding piece 75b that can be engaged with the injection plate holding pin 189. The slide plate 75 has a curved portion 197a capable of pressing and contacting a first pin described later.
Are provided.

The spring member 197 is formed by bending a thin metal piece, and presses and contacts a first pin (described later) in the parallel groove 81 of the first cam piece 82 in a loading state, thereby causing the spindle motor 10 to rotate. The slide plate 75 is configured to be reliably positioned at the raised position.

The tension coil spring 19 for returning the slide plate, which is locked to the spring locking shaft 76 and the spring locking piece 84, is attached to the slide plate 75.
1 constantly applies a moving force from the rear of the chassis (unloading position) to the front of the chassis (loading position). The inclination angle of the inclined groove 85 of the second cam piece 87 is set to be larger than the inclination angle of the inclined groove 80 of the first cam piece 82.

On the other hand, a second pin 90 facing the inclined groove 85 and the parallel groove 86 is rotatably provided on both sides of the front end of the elevating plate 74, and the inclined grooves are provided on both sides of the rear end. A first pin 89 is provided rotatably to face between 80, the parallel groove 81 and the columns 16, 17. Also,
The elevating plate 74 is provided with a holder insertion hole 74a having a circular shape in plan view through which the spindle holder 32 is inserted, and a pin insertion hole 74b communicating with the insertion hole 74a and through which the spindle elevating guide pin 15b is inserted. Have been.
A temperature sensor 9 is provided on the front edge of the lift plate 74.
1, a write protect switch 92A, and a disk type detection switch 92B.

(H) Transmission Mechanism The transmission mechanism (H) is composed of two side walls 1 facing each other.
00 and a bottom plate 101 interposed between these side walls 100
, A first plate 103 pivotally supported by the base 102 and rotatable by the pressing of the pin 71 by the driving force of the driving motor 70, and rotated by the pressing of the first plate 103 Possible second
Plate 104 and the second plate 104
A self-holding type electromagnetic clutch which can be held at a predetermined rotation direction position by pressing the plate 103 (Japanese Patent Laid-Open No. 63-17 / 1988)
No. 3306) disclosed in Japanese Patent Application Laid-Open No. 3306).

In the bottom plate 101 of the base 102 of the transmission mechanism (H), two spring locking holes 106 and 107 opened at one side edge, and the spring locking holes 10
A stopper 108 is provided in the vicinity of 7 to protrude upward.

Each of the side walls 100 of the base 102 is provided with a shaft hole 100a for supporting a holding shaft 109 which is located above the tip of the stopper 108 and extends in the direction of movement of the carriage 37.

Further, two rising walls 110 having insertion holes 110 a into which the holding shafts 109 are loosely fitted are provided at both side edges of the first plate 103. A plate pressing portion 111 protruding in the retreating direction of the carriage 37 is provided at a corner of the first plate 103 opposite the motor side.
a and a pressing piece 111 having a lifter pressing portion 111b protruding in a direction perpendicular to the direction in which the plate pressing portion 111a protrudes. Further, a spring locking hole 112 corresponding to the spring locking hole 107 is provided at the center of the end edge of the first plate 103 on the side opposite to the motor. The first plate 103 is urged by a tension coil spring 125 in a direction in which the plate pressing piece 111 contacts the stopper 108. The tension coil spring 125 has both ends of the spring locked in the spring locking holes 107 and the spring locking holes 112, respectively.

On the other hand, the second plate 104 is provided with a holding wall 113 interposed between the side wall 100 and the rising wall 110 and a comb tooth 114a corresponding to the moving range of the carriage 37 at the tip thereof. A piece 114 is provided. Further, the second plate 104 is provided with a spring locking hole 115 corresponding to the spring locking hole 106. Further, the second plate 1
Each of the holding walls 113 has an insertion hole 116 into which the holding shaft 109 is loosely fitted. Further, of the two holding walls 113 of the second plate 104, a holding hole on the carriage retreating side has a pin hole 117 opening in the same direction as the opening direction of the insertion hole 116 and the plate pressing portion 11.
A protrusion 118 corresponding to 1a is provided. And
The second plate 104 holds the tension coil spring 12
6, the comb teeth 114a are urged to rotate in a direction in which the comb teeth 114a engage with the driving force receiving piece 64 (bent portion 64a) of the lifter 58. The tension coil spring 126
Each end of the spring is locked in the spring locking hole 106 and the spring locking hole 115. Further, a holding arm 120 is rotatably provided on the second plate 104 with a concave portion 119 facing one end of the holding shaft 109 as a pivotal support.

The holding arm 120 is formed by two long and short arms 120a and 120b having different arm lengths. Long arm 120a
Is integrally provided with a holding portion 121 projecting rearward.
A magnetic piece 122 made of iron or the like that can be adsorbed to 05 is provided rotatably. The magnetic piece 122 is provided with a stopper 123.
The rotation is regulated by. On the other hand, a pin 124 inserted into the pin hole 117 is provided in the short arm portion 120b.

The electromagnetic clutch 105 is provided with a screw 127 on the rear side wall of the side walls 100 of the base 102.
When the comb teeth 114a of the second plate 104 are disengaged from the driving force receiving piece 64 of the lifter 58 when the power is turned off, the magnetic piece 12
2 is sucked and released when electricity is supplied.

The loading operation of the magnetic field applying head in the magneto-optical disk device thus configured will be described.

First, when the disk cartridge 201 is inserted into the housing 3 from the cartridge insertion opening 5 of the front panel 4, the disk cartridge 201 is automatically moved to the cartridge mounting position by the auto-injection mechanism (A ₁ ) on the cartridge holder 9. And the loading of the disk cartridge 201 is completed. At this time, the spindle motor 10 is raised to a predetermined height position by the elevating mechanism (G), and the magneto-optical disk 202 is attracted to the disk mounting surface 34 by the magnet 33 in the spindle holder 32 via the chucking hub 202a. Will be retained. Further, since the magnetic piece 122 is released by the energization of the electromagnetic clutch 105, the second plate 104 is moved by the elastic force of the extension coil spring 126 as shown in FIG.
In FIG. 15, the teeth 114a of the bent piece 114 are turned clockwise in FIG.
It is positioned as shown by the solid line in FIG. Then, the lifter 58 has the comb teeth 11
When the magnetic field applying head 59 is separated from the magneto-optical disk 202 in a state where the magnetic field applying head 59 is separated from the magneto-optical disk 202 by the clockwise rotation in FIG.
The magnet 66 is attracted and held by the magnetic body 57A.

Next, the transmission gear 7 is driven by the drive motor 70.
As shown in FIG. 17, an arrow R moves toward the fixed position b until the pin 71 is displaced from the fixed position a to a predetermined rotation position as shown in FIG.
A rotational force in the direction indicated by ₂ is applied. At this time, the first plate 103 rotates counterclockwise against the elastic force of the extension coil spring 125 as shown in FIG.
The plate pressing portion 1 by the rotation of the first plate 103
11a against the protrusion 118 causes the second plate 10
4 rotates counterclockwise against the elastic force of the extension coil spring 126 as shown in FIG.
The holding arm 120 is rotated in conjunction with the rotation of 04, and the magnetic piece 122 is attracted to the electromagnetic clutch 105 (non-energized).

As a result, as shown in FIG.
The second plate 104 is located at a position where the fourth comb tooth 114a is separated from the bent portion 64a of the driving force receiving piece 64, that is, at a position where the locked state of the carriage 37 by the transmission mechanism (H) is released (shipping lock is released). It is positioned as shown by the two-dot chain line in FIG. The rotation of the transmission gear 72 is stopped by a rotation angle detection switch (not shown).

[0086] Thereafter, the pin 71 to the transmission gear 72 by reversing the rotation is stopped after applying the rotational force in the direction indicated by the arrow R ₁ in FIG. 17 to be displaced in a fixed position a drive motor 70. At this time, the transmission gear 72 is
14, the first plate 103 is rotated clockwise in FIG. 14 by the elastic force of the tension coil spring 125 as shown by the solid line in FIG. It contacts the stopper 108.

Then, the ROM disk or RAM is operated by the disk type detection switch 92B on the lifting plate 74.
The disc is detected, and when the disc is a ROM disc, the carriage 37 is moved in the radial direction of the magneto-optical disc 202, and the spindle motor 10 is rotated to perform a normal read sequence after focus-in. In this case, since the disk is a ROM (read only) disk, the recording magnetic field applying head 59 is not used.

On the other hand, when the RAM disk is detected by the disk type detection switch 92B, the loading operation of the magnetic field applying head 59 to the magneto-optical disk 202 is performed as described below.

First, in order to bring the magnetic field applying head 59 closer to the magneto-optical disk 202 on the disk mounting surface 34, the coil 43 of the linear motor 42 is energized and the carriage 37 is moved to the outermost periphery of the magneto-optical disk 202. Gives the moving power of At this time, the bent portion 64 of the driving force receiving piece 64
a is positioned above the lifter pressing portion 111b of the pressing piece 111.

Next, the transmission gear 7 is driven by the drive motor 70.
2 the pin 71 imparts a rotational force in the direction indicated by the arrow R ₂ in FIG. 17 to be displaced in a fixed position b from the fixed position a. At this time, the first plate 103 rotates counterclockwise from the position shown by the solid line against the elastic force of the tension coil spring 125 by the pressing of the pin 71 by the rotation of the transmission gear 72 as shown in FIG.

As a result, the lifter 58 is rotated around the pivot pin 61 counterclockwise as shown in FIG. 11 by the pressing of the lifter pressing portion 111b against the driving force receiving piece 64, and the magnetic field applying head 59 is rotated. After sitting (loading) on the magneto-optical disk 202, the head arm 60 is separated from the arm support 63 a of the arm support piece 63. At this time, the magnet 66 is released from the attracted state with the magnetic body 57A by the rotating operation of the lifter 58 and is attracted and held by the magnetic body 57B .

[0092] Then, the pin 71 to the transmission gear 72 by reversing the rotation is stopped after applying the rotational force in the direction shown in Figure 17 by the arrow R ₁ until displaced in a fixed position a drive motor 70. At this time, the transmission gear 72 is
14, the first plate 103 is rotated clockwise in FIG. 14 by the elastic force of the tension coil spring 125 as shown by the solid line in FIG. It contacts the stopper 108.

Thus, the loading operation of the magnetic field applying head 59 is performed.

Thereafter, the carriage 37 is moved in the radial direction of the magneto-optical disk 202, and the spindle motor 10 is rotated to perform a normal read / write sequence after focus-in.

The operation of mounting the disk cartridge on the magneto-optical disk device is performed as follows.

First, the disk cartridge 201 is inserted into the cartridge holder 9 from the cartridge insertion slot 18 in the direction indicated by the arrow D in FIG. At this time, FIG.
As shown in FIG.
The shutter release pin 23 comes into contact with 9.

Next, when the disc cartridge 201 is further inserted into the cartridge holder 9, the shutter release pin 23 is pressed by the disc cartridge 201.
Moves along the inclined portion 22 a of the cam groove 22. At this time, the shutter opening pin support member 24 rotates along the inclined groove 22 a of the cam groove 22 around the movable guide pin 26 at the initial position in the guide groove 19 against the elasticity of the tension coil spring 27. I do.

As a result, the shutter member 211 moves in the direction indicated by the arrow H in FIG. 19, that is, the openings 206 and 216 of the disc cartridge 201 against the elastic force of the torsion coil spring (not shown) in the cartridge 203. Move in the opening direction.

When the disk cartridge 201 is further inserted into the cartridge holder 9, the cam groove 2
The shutter release pin 23 moves in the direction of the linear portion 22c along the second arc-shaped portion 22b, and the shutter member 211 further moves in the direction of opening the openings 206 and 216 of the disk cartridge 201. At this time, the shutter release pin support member 24 rotates about the movement guide pin 26 at the initial position, similarly to when the shutter release pin 23 moves along the inclined portion 22a.

Next, the shutter release pin 23 is
When it reaches the rear end position of the cartridge 2b, it enters the shutter opening member fitting portion 224 of the cartridge 203 as shown in FIG.

As a result, the openings 206 and 216 of the disk cartridge 201 are fully opened, and a part of the magneto-optical disk 202 in the cartridge 203 is partially exposed.

When the disk cartridge 201 is further inserted into the cartridge holder 9, the moving guide pins 2 are attached to the front surface 209 of the disk cartridge 201.
6 contacts.

Further, when the disk cartridge 201 moves into the cartridge holder 9, the shutter release pin 23 moves in the cartridge insertion direction along the linear portion 22c of the cam groove 22, and the shutter release pin support member 24 moves to the position shown in FIG. While maintaining the state shown, the guide groove 19
Move along. During this movement, the disc cartridge 201 is moved into the cartridge contact portion 1 of the first injection plate 170 as shown in FIGS.
Contact 78.

Then, when the disk cartridge 201 is further inserted into the cartridge holder 9, the first injection plate 170 moves in the direction indicated by the arrow I in FIG. At this time, the first injection plate 170
The second injection plate 171 moves in the insertion direction of the disk cartridge 201 in accordance with the movement operation, and rotates in the direction indicated by the arrow J in FIG.

As a result, the cartridge hold pin 18
5 gradually enters the cartridge pull-in pin fitting hole 228 of the disk cartridge 201.

Further, when the disk cartridge 201 is inserted into the cartridge holder 9, the trigger arm rotating operation piece 181 comes into pressure contact with the trigger arm pin 180.

Further, when the first injection plate 170 moves in the cartridge insertion direction, the trigger arm 179 moves around the support shaft 182 as indicated by an arrow K in FIG.
And the engagement with the slide plate locking pin 75a is released.

As a result, the slide plate 75 starts to move on the chassis 1 in the direction indicated by the arrow L in FIG. 22, while being guided by the guide shafts 76 and 77 by the extension coil spring 191.

At this time, the injection plate holding piece 75b of the slide plate 75 and the third injection plate 17
26, the engagement of the second injection plate holding pin 189 is released, and the third injection plate 172 is forcibly rotated in the direction indicated by the arrow M in FIG. Move. When the third injection plate 172 rotates, the first injection plate 170 moves in the direction indicated by the arrow I in FIG.

At this time, since the cartridge hold pin 185 has already entered the cartridge pull-in pin fitting hole 228 of the disk cartridge 201, the disk cartridge 201 automatically enters the cartridge holder 9 deeply.

The shutter member 211 finally comes into contact with the cartridge insertion position regulating piece 28, and the mounting position of the disk cartridge 201 is determined.

When the slide plate 75 moves toward the cartridge insertion / ejection opening 18, the engagement between the projection 88a of the cartridge pressing operation piece 88 and the cartridge avoiding portion 31c of the disk cartridge pressing piece 31 is released. The cartridge pressing portion 31b of the disc cartridge pressing piece 31 enters the cartridge holder 9 from a state where the disc cartridge 20 can be inserted into the cartridge holder 9, and the disc cartridge 20
The upper surface 201a of the first device is urged downward.

As a result, the disk cartridge 201
Are pressed against the cartridge height direction positioning portion 30 of the cartridge holder 9 by the elasticity of the disc cartridge pressing piece 31, as shown in FIGS.
It is held at a predetermined height direction position.

Further, when the slide plate 75 moves toward the cartridge slot 18, the first cam piece 82 is moved.
The first pin 89 and the second cam piece 87 are engaged with the second cam piece 87, respectively.

When the slide plate 75 further moves toward the cartridge insertion / ejection opening 18 side, the first cam piece 8
The first pin 89 rolls upward on the second inclined groove 80, and the second pin
The second pin 90 rolls upward on the inclined groove 85 of the cam piece 87. At this time, since the inclination angle of the inclined groove 85 of the second cam piece 87 is set to be larger than the inclination angle of the inclined groove 80 of the first cam piece 82, the first cam pin 89 is moved to the first cam piece 82. 2nd earlier than reaching the parallel groove 81 of
The pin 90 reaches on the parallel groove 86 of the second cam piece 87.

As a result, the front end of the lifting plate 74 rises before the rear end, and the cartridge positioning pin 73 rises before the spindle motor 10. As a result, as shown in FIGS. 27 to 29, the cartridge positioning pins 73 are fitted into the cartridge positioning pin engagement holes 225 and 226 of the cartridge 203, and the disk cartridge 201 is positioned.

Next, when the first pin 89 reaches the parallel groove 81 of the first cam piece 82, the spindle motor 10 rises and the lifting plate 74 comes into contact with the spindle height positioning member 15. At this time, the spindle motor 10 is held at a predetermined height position by the spring member 197.

As a result, the spindle shaft 10a of the spindle motor 10 enters the chucking hub 202a of the magneto-optical disk 202, and the magneto-optical disk 202 is chucked.

Thus, the mounting of the magneto-optical disk 202 on the magneto-optical disk device is performed.

Next, the unloading operation of the magnetic field applying head in the magneto-optical disk device will be described.

First, the spindle motor 10 is stopped by an eject command from a host computer or the like.

Next, an open pulse voltage is applied to the electromagnetic clutch 105. At this time, the attraction piece 122 is separated from the electromagnetic clutch 105, and as shown in FIG.
The plate 104 integrally rotates clockwise. Also,
As shown in FIG. 15, the second plate 104 is positioned at a position where the comb teeth 114a of the bent piece 114 are pressed and engaged with the bent portion 64a of the driving force receiving piece 64 as shown by a solid line in FIG. At this time, the lifter 58 rotates clockwise as shown in FIG. Is head arm 6
By pushing 0 upward, the magnetic field applying head 59 is separated from the magneto-optical disk 202.

[0123] Then, to impart a rotational force in the direction indicated by arrow R ₁ to pin 71 as shown in FIG. 17 is displaced from a fixed position a fixed position b to the transmission gear 72 by a drive motor 70 (reversing force). At this time, the slide plate 75 is pulled back from the loading position to the unloading position against the elasticity of the extension coil spring 191 by the pressing of the pin 71 against the slide plate return piece 83 by the rotation of the transmission gear 72, 75, the lift plate 74 is lowered, and the disc cartridge 201 is moved in the cartridge discharge direction by the auto-injection mechanism (A ₁ ).
The cartridge 7 is discharged from the cartridge insertion opening 5 to the outside of the housing 3.

[0124] Thereafter, the pin 71 to the transmission gear 72 by reversing the rotation is stopped after applying the rotational force in the direction shown in Figure 15 by the arrow R ₂ to be displaced in a fixed position a drive motor 70.

Thus, the unloading operation of the magnetic field applying head is performed.

The loading of the disk cartridge 201 from the magneto-optical disk device is released as follows.

First, the transmission gear 7 is driven by the drive motor 70.
When 2 is reversed, the pin 71 presses the slide plate return piece 83 in the insertion direction of the disk cartridge 201 to pull the slide plate 75 back from the loading position to the unloading position.

As a result, the second pin 90 moves to the second cam piece 87.
Rolling along the inclined portion 85 below the parallel groove 86, the first pin 89 rolls along the inclined portion 80 below the parallel portion 81 of the first cam piece 82, and the elevating plate 74 The contact with the height positioning member 15 is released to descend. As a result, the cartridge positioning pin 73 is
5 and 226, the cartridge positioning pin 73 is exposed.
The positioning of the disk cartridge 201 by the spindle motor 10 is released, and the spindle shaft 10 of the spindle motor 10 is released.
a is separated from the chucking hub 202a, and the magneto-optical disk 2 is moved by the magnet 33 in the spindle holder 32.
02 is released.

When the slide plate 74 moves in the insertion direction of the disk cartridge 201, the projection 88a of the cartridge pressing operation piece 88 engages with the cartridge avoiding portion 31c of the disk cartridge pressing piece 31, and the cartridge pressing portion 31b Is released from the cartridge holder 9 to release the pressing on the upper surface 201a of the disk cartridge 201.

When the slide plate 74 further moves in the insertion direction of the disc cartridge 201, the injection plate holding piece 75b of the slide plate 75 presses and engages with the injection plate holding pin 189 of the third injection plate 172, Third injection plate 17
26 rotates around the support shaft 187 in the direction opposite to the direction indicated by the arrow M in FIG. 26 against the elasticity of the tension coil spring 190.

When the third injection plate 172 rotates, the first injection plate 170 is moved by the pressing engagement of the injection plate operation pin 188 as shown in FIG.
In the direction opposite to the direction indicated by the arrow I (discharge direction of the disk cartridge 201).

With the movement of the first injection plate 170, the second injection plate 171 moves in the ejection direction of the disc cartridge 201, and
It rotates along the cam groove 186 in a direction opposite to the direction indicated by the arrow J in FIG.

As a result, the cartridge hold pin 18
5 comes out of the hole 228 for inserting the cartridge pull-in pin, and the disk cartridge 201 can be discharged out of the cartridge holder 9.

In addition, the first injection plate 17
0, the trigger arm 179 is moved by the repulsive force of the torsion spring 183 in FIG.
Rotate in the direction opposite to the direction shown by
Nine locking claws 179a engage with the slide plate locking pins 75a.

When the disk cartridge 201 moves in the cartridge discharge direction by the resilient force of the tension coil spring 27, the shutter release pin 23 moves in the direction of the arc-shaped portion 22b along the straight portion 22c of the cam groove 22, and The shutter release pin support member 24 is shown in FIG.
Is moved in the cartridge discharge direction along the guide groove 19 while maintaining the state shown in FIG.

As the disc cartridge 201 moves in the cartridge ejection direction, the shutter release pin 23 reaches the rear end position of the arcuate portion 22b as shown in FIG. 20, and the moving guide pin 26 moves to the start end of the guide groove 19. When the position (initial position) is reached, the movement guide pin 26 starts to separate from the front surface 209 of the disk cartridge 201, and the shutter release pin 23 moves in the direction of the inclined portion 22a along the arcuate portion 22b of the cam groove 22. .

When the shutter release pin 23 moves along the arcuate portion 22b, the shutter release pin support member 24
Is the moving guide pin 26 at the initial position of the guide groove 19.
Around the center.

When the disk cartridge 201 further moves in the cartridge ejection direction, the shutter release pin 23 passes through the start end of the arcuate portion 22b and passes through the cam groove 22.
Along the inclined groove 22a.

At this time, the shutter member 211 is moved in a direction indicated by an arrow H in FIG. 19, that is, in a direction to close the openings 206 and 216 of the disc cartridge 201 by the resilience of a torsion spring (not shown) in the cartridge 203. Moving.

Further, when the disk cartridge 201 moves in the cartridge discharge direction, the shutter release pin 23 separates from the front surface 209 of the disk cartridge 201 as shown in FIG.
Is discharged out of the cartridge holder 9.

Thus, the mounting of the disk cartridge 201 from the magneto-optical disk device is released.

In this embodiment, the holding mechanism (E) includes the magnet 66 and the pair of magnetic bodies 57A, 57A.
7B, the present invention is not limited to this, and a holding mechanism provided with a torsion coil spring 130 having a spring winding part 130a as shown in FIGS. Good. In the figure,
Parts that are the same as or equivalent to those in the drawings used to explain the present embodiment are given the same reference numerals, and detailed descriptions thereof are omitted.

In the figure, two stopper pins 132 and 133 are provided on one side surface of the rear end portion of the carriage indicated by the reference numeral 131 for restricting the movement of a later-described lifter between an unloading position and a loading position.

Reference numeral 134 denotes a lifter as a rotating member. A base piece 136 having a pivot pin 135 at the center thereof, and an arm support provided integrally with the front end of the base piece 136 to hold the head arm 60 are provided. An arm support piece 137 having a substantially U-shaped section having a portion 137a, and a bent portion provided behind the arm support piece 137 and formed integrally with the rear end edge of the base piece 136 and protruding to one side. 138a
A driving force receiving portion 138 having a substantially L-shape in plan view, and the base portion 1 provided below the driving force receiving portion 138.
36, the stopper pins 132, 13
3 and a pressing piece 139 facing between the three.
As shown in FIG. 32, when the magnetic field applying head 59 is unloaded, the torsion coil spring 130 presses against the stopper pin 132 by the resilient force.
As shown in FIG. 3, when the magnetic field applying head 59 is loaded, the torsion coil spring 130 is configured to be able to press against the stopper pin 133 by the resilient force.

The lifter 134 is configured so that it can be held at the loading position after the loading of the magnetic field applying head 59 onto the magneto-optical disk 202. That is, as shown in FIG. 33, the pressing piece 139 of the lifter 134 is
9 is positioned between the two stopper pins 132 and 133 at the moment when it is seated on the magneto-optical disk 202,
Thereafter, as shown in FIG.
The elastic member 30 comes into pressure contact with the stopper pin 133.

The loading and unloading in the magneto-optical disk apparatus thus configured is performed by the driving force of the drive motor 70 of the drive mechanism (F) or the resilient force of the extension coil springs 125 and 126 of the transmission mechanism (H). After acting on the lifter 134 (the bent part 138 a of the driving force receiving part 138), the torsion coil spring 1
This is performed by the action of 30 elastic repulsions.

That is, the loading of the magnetic field applying head 59 onto the magneto-optical disk 202 is performed by driving the transmission mechanism (H) by driving the drive motor 70.
Against the resilience of the torsion coil spring 130 in FIG.
From the unloading position shown in FIG.
As shown in FIG. 33, the magnetic field applying head 59 is seated on the magneto-optical disk 202 by rotating in the counterclockwise direction to a position between the positions 2 and 133 (a position where the resilience of the torsion coil spring 130 acts on the lifter 134). After that, the lifter 134 is further rotated counterclockwise as shown in FIG. 34 by the elastic force of the torsion coil spring 130, and the pressing piece 139 is pressed against the stopper pin 133.

At this time, since the engagement between the arm supporting piece 137 and the head arm 60 is released from the magnetic field applying head 59, a stable urging force is applied to the magneto-optical disk 202 by the head arm 60.

On the other hand, when the magnetic field applying head 59 is unloaded onto the magneto-optical disk 202, the lifter 134 is driven by the transmission mechanism (H) shown in FIG. After rotating clockwise from the loading position shown to the position between the stopper pins 132 and 133 (the position where the resilience of the torsion coil spring 130 acts on the lifter 134) as shown in FIG. As shown in FIG. 32, the lifter 134 further rotates clockwise by the repelling force, and the pressing piece 139 presses against the stopper pin 132.

Next, as shown in FIGS. 35 to 37, the holding mechanism (E) according to the present invention employs a tension coil spring 150.
Will be described. In the figure, the same reference numerals are given to some of the same or equivalent members as those used in the description of the present embodiment, and the detailed description is omitted.

In this figure, a stopper pin (also serving as a spring retaining piece) 152 for restricting the movement of a later-described lifter between an unloading position and a loading position is provided on one side surface of the rear end portion of the carriage denoted by reference numeral 151. ing.

Reference numeral 153 denotes a lifter as a rotating member, which is a substantially fan-shaped arm in plan view having a spring locking piece 154 protruding to one side and a long hole 155 for restricting the lifter rotation extending in the circumferential direction. A support piece 156, and a driving force receiving piece 157 having a bent portion 157a formed integrally with the rear end arc of the arm support piece 156 and protruding to one side, and having a substantially L-shape in plan view. The rear end of the carriage 151 is provided via a pivot pin 158.

As shown in FIG. 35, when the magnetic field applying head 59 is unloaded, the lifter 153 is connected to the stopper pin 152 by one resilient force of the extension coil spring 150 so that one end 155a of the long hole 155 is formed.
Are pressed against each other, and as shown in FIG.
During loading, the resilient force of the tension coil spring 150 causes the elongated hole 15 to be inserted into the stopper pin 152.
5 is configured such that the other end 155b can be pressed against the other end.

The lifter 153 is configured to be held at the loading position after the loading of the magnetic field applying head 59 onto the magneto-optical disk 202. That is, as shown in FIG. 36, at the moment when the magnetic field applying head 59 is seated on the magneto-optical disk 202, the stopper pin 152 is positioned at an intermediate position of the elongated hole 155.
Thereafter, as shown in FIG.
The stopper pin 152 is positioned at a position where the stopper pin 152 comes into pressure contact with the other end 155b of the elongated hole 155 by the elastic force of 50.

The loading and unloading of the magneto-optical disk apparatus thus configured is performed by the driving force of the driving motor 70 of the driving mechanism (F) or the elastic force of the extension coil springs 125 and 126 of the transmission mechanism (H). Lifter 153 (bending portion 1 of driving force receiving portion piece 157)
After the action of 57a) is performed, the elasticity of the tension coil spring 150 acts.

That is, when the magnetic field applying head (not shown) is loaded, the lifter 153 is moved from the unloading position shown in FIG.
As shown in FIG. 36, the magnetic field applying head 59 was seated on the magneto-optical disk 202 until it reached the intermediate position of No. 5 (the position where the resilient force of the extension coil spring 150 acts on the lifter 153) as shown in FIG. Thereafter, the lifter 153 is further rotated counterclockwise by the resilience of the extension coil spring 150, and one end 155b of the elongated hole 155 is pressed against the stopper pin 152 as shown in FIG.

At this time, since the engagement between the arm supporting piece 156 and the head arm 60 is released from the magnetic field applying head 59, a stable urging force is applied to the magneto-optical disk 202 by the head arm 60.

On the other hand, when unloading the magnetic field applying head (not shown), the lifter 153 is moved from the loading position shown in FIG. (The position where the resilience of 150 acts on the lifter 153)
36, the arm supporting piece 156 is engaged with the head arm 60, and then the lifter 153 is further clocked by the elastic force of the extension coil spring 150 as shown in FIG. Then, the other end 155 a of the elongated hole 155 is pressed against the stopper pin 152.

Although the present embodiment has been described with respect to a magneto-optical disk device (the present invention) provided with a carriage for holding an objective lens and a magnetic field applying head, an optical disk device not using a magnetic field applying head is described. (Another invention of the present invention) can also be an object.

[0160]

As described above, according to the present invention, a moving means for moving the magnetic field applying head between the loading position and the unloading position is provided in the disk drive body, and the magneto-optical recording medium is ejected. And a drive motor for driving the discharge mechanism and the moving means. The drive motor transmits a motor driving force to the moving means by rotating in a first direction from a reference position. Since the rotating body that transmits the motor driving force to the discharge mechanism by rotating from the reference position in the second direction opposite to the first direction is connected, the driving operation of the moving unit and the discharge mechanism is performed by a common drive motor. Done by

Further, another invention of the present invention is to provide a mechanism for ejecting an optical recording medium in a disk drive body, and a lock / unlock operation for locking / unlocking a carriage in a forward / backward direction.
Providing an unlocking means, and providing a drive motor for driving the locking / unlocking means and the discharging mechanism,
The drive motor transmits a motor driving force to the lock / unlock means by rotating in a first direction from a reference position, and discharges by rotating in a second direction opposite to the first direction from the reference position. Since the rotating body for transmitting the motor driving force is connected to the mechanism, the driving operation of the locking / unlocking means and the discharging mechanism is performed by the common driving motor.

Therefore, according to the present invention and another invention, the number of parts can be reduced, so that the internal structure can be simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an entire magneto-optical disk drive according to the present invention.

FIG. 2 is a perspective view showing the appearance of a magneto-optical disk device and a disk cartridge according to the present invention.

FIG. 3 is a sectional view showing the internal structure of the magneto-optical disk device according to the present invention.

FIG. 4 is a perspective view showing a chassis of the magneto-optical disk device according to the present invention.

FIG. 5 is an exploded perspective view showing a mounting state of a spindle motor to a lifting plate of the magneto-optical disk device according to the present invention.

FIG. 6 is a perspective view showing a cartridge holder of the magneto-optical disk device according to the present invention.

FIG. 7 is an exploded perspective view showing a part of the magneto-optical disk device according to the present invention.

FIGS. 8A and 8B are a perspective view showing a carriage driving mechanism of the magneto-optical disk device and a perspective view showing a lens driving mechanism.

FIG. 9 is a cross-sectional view taken along line aa of FIG.

FIGS. 10A to 10C are a side view, an X arrow view, and a cross-sectional view taken along line cc for explaining an unloading state of the magneto-optical disk device according to the present invention.

FIGS. 11A to 11C are a side view, a view taken in the direction of the arrow Y, and a cross-sectional view taken along the line cc for explaining a loading state of the magneto-optical disk device according to the present invention.

FIG. 12 is an exploded perspective view showing a transmission mechanism of the magneto-optical disk device according to the present invention.

FIG. 13 is a perspective view showing a transmission mechanism of the magneto-optical disk device according to the present invention.

FIG. 14 is a rear view showing the operating state of the transmission mechanism of the magneto-optical disk device according to the present invention.

FIG. 15 is a perspective view showing a shipping locked state of the carriage of the magneto-optical disk device according to the present invention.

FIG. 16 is a perspective view showing a shipping lock released state of a carriage of the magneto-optical disk device according to the present invention.

FIG. 17 is a side view showing a transmission gear of the magneto-optical disk device according to the present invention (a view as viewed in the direction of arrow Z in FIG. 15).

FIG. 18 is a plan view showing an engagement state between a shutter release pin and the disk cartridge during mounting of the disk cartridge on the cartridge holder.

FIG. 19 is a plan view showing a state where the shutter member has begun to be opened by the shutter release pin during mounting of the disk cartridge on the cartridge holder.

FIG. 20 is a plan view showing an intermediate state in which a shutter member is opened by a shutter release pin during mounting of the disk cartridge on the cartridge holder.

FIG. 21 is a plan view showing a state in which the shutter member is fully opened by a shutter release pin while the disk cartridge is being mounted on the cartridge holder.

FIG. 22 is a plan view showing an operation state of the lifting mechanism in an unloading state.

FIG. 23 is a right side view showing an operation state of the lifting mechanism in an unloading state.

FIG. 24 is a left side view showing the operation state of the lifting mechanism in the unloading state.

FIG. 25 is a front view showing the operation state of the lifting mechanism in the unloading state.

FIG. 26 is a plan view showing an operation state of the lifting mechanism in a loading state.

FIG. 27 is a right side view showing the operation state of the lifting mechanism in the loading state.

FIG. 28 is a left side view showing the operating state of the lifting mechanism in the loading state.

FIG. 29 is a front view showing the operating state of the lifting mechanism in the loading state.

FIG. 30 is a perspective view showing the disk cartridge viewed from the upper half side.

FIG. 31 is a perspective view showing the disk cartridge viewed from the lower half side.

FIG. 32 is a side view showing an unloading state according to another second embodiment.

FIG. 33 is a side view showing the moment of loading in another second embodiment.

FIG. 34 is a side view showing a loading state in another second embodiment.

FIG. 35 is a side view showing an unloading state in another third embodiment.

FIG. 36 is a side view showing a loading moment in another third embodiment.

FIG. 37 is a side view showing a loading state in another third embodiment.

[Explanation of symbols]

12 Objective lens 37 Carriage 59 Magnetic field applying head 70 Drive motor 71 Pin 72 Transmission gear 74 Elevating plate 75 Slide plate 83 Slide return piece 201 Disk cartridge (A) Cartridge loading / unloading mechanism (A ₁ ): Auto-inject mechanism (H): Transmission mechanism a: Fixed position (reference position) b: Fixed position R ₂ : First direction R ₁ : Second direction

Claims (3)

(57) [Claims] 1. Holds a magnetic application head and an objective lens
Key that can move in the radial direction of the disk of the magneto-optical recording medium.
Carriage and movement of the carriage in the radial direction of the disk.
And locking and unlocking means for locking click-en, a moving means for moving operation between a loading position and the unloading position the magnetic field application head, and a discharge mechanism for discharging the magneto-optical recording medium, said ejection mechanism and A drive motor for driving the moving means , wherein the drive motor transmits a moving operation force to the moving means by rotating in a first direction from a reference position, and A rotating body that transmits an unlocking operation force to the unlocking means and transmits a motor driving force to the discharge mechanism by rotating from a reference position in a second direction opposite to the first direction. 2. The magneto-optical disk drive according to claim 1, wherein: A first plate rotatable by the drive motor; a first plate rotatable by the drive motor;
A second plate rotatable by pressing by the rotation of the plate; and an electromagnetic actuator for holding the second plate at a position in the rotating direction, wherein the first plate is pressed by the driving force of the driving motor. The elastic force in the opposite direction is given by the first spring,
A resilient force in a direction opposite to a pressing direction by the rotation of the first plate is applied to the plate by a second spring,
And a magneto-optical disk apparatus according to claim 1, wherein the comb teeth to restrict the movement of the carriage is provided. 3. An optical disk device comprising a disk device main body having a built-in carriage which holds an objective lens and is movable in a disk radial direction of the optical recording medium at a disk mounting position, wherein the optical recording medium is discharged into the disk device main body. And a discharge mechanism in front of the carriage .
Lock / unlock means for locking / unlocking movement of the disk in the radial direction ; and a drive motor for driving the lock / unlock means and the ejection mechanism are provided. Transmits the motor driving force to the lock / unlock means by rotating from a reference position in a first direction, and transfers the motor driving force to the discharge mechanism by rotating from a reference position in a second direction opposite to the first direction. An optical disc device, wherein a rotating body that transmits a motor driving force is connected.