JP3082428B2 - Disk cartridge loading 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 disk cartridge loading apparatus for loading and ejecting (unloading) a disk cartridge containing a recordable / reproducible disk such as a magneto-optical disk.

[0002]

2. Description of the Related Art For example, a small region on a magnetic film having a large coercive force with an easy magnetization direction perpendicular to the film surface is heated by a laser beam or the like to form a magnetization reversal portion (recording bit), and this is used for the magneto-optical effect. Magneto-optical recording (magnet
2. Description of the Related Art A small magneto-optical disk using an optical recording method is known. The magneto-optical disk is housed in a disk cartridge composed of upper and lower halves for easy carrying and handling, and recording and reproduction can be performed by loading the disk cartridge to a predetermined mounting position by a disk cartridge loading device. The disc cartridge loading device for loading or ejecting the disc cartridge will be specifically described with reference to FIG. 7. In FIG. 7, reference numeral 100 denotes a disc cartridge loading device. An eject plate 104 is provided on a chassis 101 of the disc cartridge loading apparatus via a pair of guide pins 102, 102 and 103, 103 standing on both front and rear sides thereof so as to be slidable back and forth in the front-rear direction. is there. This eject plate 104
A pair of inclined cam grooves 104a, 104 formed on both sides of
4a, a cartridge holder 110 for holding the disk cartridge 200 is provided so as to be movable up and down. Then, with the disc cartridge 200 inserted and held in the cartridge holder 110, the eject plate 1
When the cartridge 04 moves toward the optical pickup 106 located at the center of the chassis 101, the cartridge holder 110 descends, and the chucking hub 202 of the magneto-optical disk 201 capable of recording and reproducing information on the disk cartridge 200 is magnetically attached to the turntable 107. It is chucked and loading is completed. When the loading is completed, the eject plate 104 is placed on the chassis 101 by the torsion coil spring 1.
08 and locked by a lock lever 109 supported via.

On the upper side of the cartridge holder 110, a shutter opening / closing lever 111 for opening / closing a shutter 203 of the disk cartridge 200 and a disk cartridge erroneous insertion detection lever 112 are provided by tension coil springs 11.
It is arranged via 3 etc. Further, the chassis 10
1 is located at the rear left side of the optical pickup 106.
A plunger 116 mounted on the side of the ejector plate 104 is mounted on the side of the ejector plate 104 at the right end thereof. An eject drive motor 117 for pressing the edge 104b to forcibly move and eject the eject plate 104, a reduction gear group 118, and an eject gear 119 are provided. When the eject plate 104 is moved back on the chassis 101 by the pulling force of the pair of tension coil springs 105, 105 interposed between the eject drive motor 117 and the chassis 101 and the eject plate 104, the cartridge holder 110 is moved to the front side. The disk cartridge 200 held by the cartridge holder 110 is unloaded and ejected (this similar structure is, for example, a 3-98 type).
745).

[0004]

However, in the above-mentioned conventional disk cartridge loading apparatus 100, the plunger 116 and the eject plate 104 for vertically swinging the support arm 115 to which the magnetic head 114 is fixed are provided.
Since a plurality of drive sources such as a motor 117 for forcibly ejecting the motor are required, the number of parts increases accordingly,
There has been a problem that the configuration of the entire apparatus becomes complicated, resulting in a large size, a large weight, and a high cost. In addition, the eject plate 10
4 and its lock lever 109 and shutter opening / closing lever 1
A plurality of urging means, such as the tension coil spring 105, the torsion coil spring 108, and the tension coil spring 113, are required to bias the power supply 11, and this also increases the number of components and complicates the configuration of the entire apparatus. With it became large and heavy.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a disk cartridge loading apparatus capable of greatly reducing the number of parts and reliably and smoothly loading and ejecting a disk cartridge with a simple structure.

[0006]

SUMMARY OF THE INVENTION A main slider slidably supported on a chassis, and supported vertically between both sides of the main slider so that a disk cartridge is inserted between both sides. A loading slider having a cartridge holder to be held, a claw portion slidably supported by the cartridge holder, and a side portion with which an engagement recess of a disk cartridge inserted into the cartridge holder engages and separates; A rack provided outside the main slider, meshed with the rack,
A driving gear driven by a motor, and the loading slider is reciprocally slid via a pin provided eccentrically to the driving gear to be inserted into the cartridge holder and engaged with the claw portion of the loading slider. The cartridge is retracted and ejected, and the main slider is reciprocally slid by the rotation of the drive gear, so that the cartridge holder and the loading slider are vertically movable with respect to the main slider. is there.

A support arm having a magnetic head for recording and reproducing data on and from a disk in the disk cartridge is supported on the chassis so as to be vertically swingable, and the support arm is mounted on a rack of the main slider via a cam. The cam groove is provided with three steps so that the swing range of the support arm can be switched between a standby position, a reproduction position, and a recording position.

Further, a pair of projections are provided outside the main slider at a predetermined distance, and a reproduction position and a recording position of the main slider are respectively detected at a side of the chassis opposed to the pair of projections. A pair of positioning switches are provided.

[0009]

The main slider that slides on the chassis and the loading slider that slides on the cartridge holder are reciprocated by a single motor via a driving gear, a rack, and the like. The movement causes the cartridge holder and the loading slider to move up and down with respect to the main slider. As a result, the disk cartridge is reliably and smoothly loaded to the predetermined position and ejected. Further, a support arm having a magnetic head is moved to a standby position, a reproduction position, and a cam through a cam connected to the cam groove of the rack.
The position can be switched to the recording position. Therefore, unlike the related art, there is no need for a driving unit such as a plunger for driving the support arm or an urging unit for urging each member, so that the number of parts is greatly reduced and cost reduction is achieved.
The structure of the entire device is simplified, and the device is reduced in weight, size, and thickness.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 5, reference numeral 1 denotes a disk cartridge loading device, which is small (64 mm in diameter).
Loading / unloading (ejecting) the disk cartridge 70 containing the magneto-optical disk 71
It is to let. A turntable 3 is rotatably supported via a motor drive shaft 4 at the center of a rectangular metal plate-shaped chassis 2 of the disc cartridge loading device 1. From the center of the chassis 2, the chassis 2
A substantially rectangular cutout portion 2b is formed on a right side portion 2a depending on the right end edge in FIG. A slide guide shaft 5 and a feed screw 6 are provided on the lower side of the chassis 2 facing the notch 2b.
The optical pickup 7 is disposed so as to be reciprocally movable along the radial direction of the magneto-optical disk 71 mounted on the turntable 3 via the. As shown in FIG. 2, a lower portion of a substantially U-shaped support plate 8 is fixed to a rear portion of the lower surface of the optical pickup 7. An intermediate portion 10a of an L-shaped support arm 10 is supported by a pair of holes 8a, 8a formed on the upper portion of the support plate 8 via a support shaft 9 so as to be vertically swingable. The gimbal 11 attached to the distal end 10b of the support arm 10 is
b. A flying magnetic head 12 as an external magnetic field generating means is attached to the gimbal 11 so as to face the objective lens 7a of the optical pickup 7. The lower end 10c of the support arm 10
A shaft 13 extending to the right side 2a side of the chassis 2 is attached to the chassis. A torsion coil spring 14 for constantly urging the distal end 10b of the support arm 10 upward is interposed between the support shaft 9 supporting the intermediate portion 10a of the support arm 10 and the lower portion of the support arm 10. .

Further, on the chassis 2, a right side 2 thereof is provided.
a pair of guide pins 18 are projected in the front-rear direction so as to be parallel to a, and a pair of guide pins 18 are provided in the front-rear direction so as to be parallel to a left side portion 2c hanging down to the left end edge of the chassis 2. Guide pins 19, 19 protrude. The heads 18a of the pair of guide pins 18, 18 are formed in an inverted conical shape, and the shafts 18b are formed in a columnar shape. The guide pins 18, 18 also serve as positioning pins when the loading operation of the disk cartridge 70 is completed. ing. In addition, the pair of guide pins 19, 19 have flat T-shaped heads.
It is formed in the shape of a letter. A main slider 20 made of a metal plate is supported on the chassis 2 via the pair of guide pins 18, 18 and 19, 19 so as to be reciprocally slidable in the front-rear direction by a predetermined distance (for example, about 7 mm in one way). It is.

The main slider 20 has a bottom 21 and
A pair of side parts 22 and 22 vertically integrally formed from both sides of the bottom part 21 form a substantially U-shaped front. The bottom portion 21 of the main slider 20 is formed with a pair of slots 21a, 21a and 21b, 21b into which the pair of guide pins 18, 18, 19, 19 are inserted. A substantially rectangular notch 21c is formed on the bottom 21 of the main slider 20 at a position facing the notch 2b of the chassis 2. This main slider 2
A pair of cam grooves 22a, 22a are formed on the front and rear sides of the two side portions 22, 22, respectively, so as to gradually rise from the front side to the rear side. The center of the right side portion 22 of the main slider 20 is integrally bent so as to project the horizontal piece 22b outward. A rectangular plate-like rack 23 is attached to the rear side of the horizontal piece 22b by screwing so as to be horizontal, and a pair of protrusions 22c and 22d are integrally bent at front and rear corners. It is formed.

The teeth 23a formed on the front side of the outer edge of the rack 23 are intermittent gears 24a on the upper part of the drive gear 24.
Is engaged. The drive gear 24 is mounted on the chassis 2
The sub-chassis 15 screwed to the right side 2a of the
It is rotatably supported via 6. The lower gear portion 24b of the drive gear 24 includes four reduction gears 25 to
Motor 29 fixed to the sub-chassis 15 via
Of the worm gear 30. The main slider 20 reciprocates in the front-rear direction on the chassis 2 by the rotation (forward and reverse rotation) of the motor 29.

Also, as shown in FIG.
A cam groove 2 having three steps A to C is provided on the rear side.
3b is formed. The rack 2 is provided in the cam groove 23b.
A pin 32 of a substantially triangular cam 31 pivotally supported by a pivot pin 31a is loosely fitted on the chassis 2 below the lower part 3. A pin 33 projects from the top of the cam 31 on the side of the main slider 20. The pin 33 penetrates and pivots substantially at the center of a synthetic resin slide plate 35 slidably supported in the front-rear direction by the pin 34 on the chassis 2 adjacent to the rack 23. A concave portion 35a is formed on the rear lower surface of the slide plate 35. The shaft 13 pivotally supported by the lower end 10c of the support arm 10 is loosely fitted in the recess 35a. The rack 23 also reciprocates in the front-rear direction due to the reciprocating sliding of the main slider 20, whereby the distal end 10b side of the support arm 10 swings up and down in three stages. That is, the pin 3 of the cam 31
When the position 2 is at the position of the step A of the cam groove 23b of the rack 23, the magnetic head 12 attached to the tip end of the support arm 10 is in the standby position (ejection position) farthest from the objective lens 7a of the optical pickup 7. Also, when the pin 32 of the cam 31 is at the position of the step B of the cam groove 23b of the rack 23 as shown in FIG.
2 is a reproduction position close to the objective lens 7 a of the optical pickup 7,
Is at the position of the step C of the cam groove 23b of the rack 23,
The magnetic head 12 attached to the tip side of the support arm 10 is configured to be in a recording position closest to the objective lens 7a of the optical pickup 7. As shown in FIG. 4, the playback position is detected by the operation lever 36a of the positioning switch 36 attached to the sub-chassis 15 hitting one of the protrusions 22c of the main slider 20. ,
As shown in FIG. 5, the operation lever 37a of the positioning switch 37 attached to the sub-chassis 15 is moved to the other protruding portion 22d of the main slider 20 as shown in FIG.
To be detected.

Both sides 22, 2 of the main slider 20
Between the two, a cartridge holder 40 in which the disk cartridge 70 is inserted and held is movably supported in the vertical direction. The cartridge holder 40 has an upper part 41.
And both sides 42, 42 integrally formed vertically downward from both sides of the upper portion 41 to form a front inverted U shape. The chassis 2 on the upper portion 41 of the cartridge holder 40
A rectangular notch 41c is formed at a position facing the notch 2b. At a position of the cartridge holder 40 opposite to the pair of cam slots 22a, 22a on both sides 22, 22 of the main slider 20, a pair of engaging members which are loosely fitted into the pair of cam slots 22a, 22a, respectively. Mating pins 43, 4
3 are protruded respectively. This cartridge holder 4
The two engagement pins 43 on the rear sides of the two side portions 42, 42 are respectively provided with the respective recessed portions 2d standing behind the two side portions 2a, 2c of the chassis 2.
Are further loosely fitted. Further, a pair of horizontal pieces 4 on which the disc cartridge 70 is to be mounted
2a and 42a are bent and integrated so as to face each other. The long and short guide grooves 70b, 70c on both sides of the disc cartridge 70 are provided at the center inside the right side part 42 and the rear part inside the left side part 42 of the cartridge holder 40.
The protrusions 42b and 42c that are loosely fitted to the horn are formed by being bent horizontally. Further, a long slot 42d is formed on the upper side of the right side portion 42 of the cartridge holder 40, and a protruding portion 42e is formed on the front side thereof by bending outwardly vertically.

On the upper surface of the upper portion 41 of the cartridge holder 40, a disc cartridge 70 is locked via a pair of guide pins 44, 44 and the like projecting in the front-rear direction of the upper surface and pulled into the optical pickup 7 side. A loading slider 50 to be ejected is mounted on the front side so as to be slidable back and forth. The loading slider 50 is formed in a substantially inverted L-shape on both sides by a horizontal portion 51 made of a metal plate and a right portion 52 bent vertically below a right edge of the horizontal portion 51. The horizontal portion 51 of the loading slider 50 has a pair of guide grooves 51a, 51a loosely fitted to the pair of guide pins 44, 44, and is located at a position facing the notch 41c of the cartridge holder 40. Has a rectangular notch 51c. Also, below the right side portion 52 of the loading slider 50,
A substantially triangular claw portion 53 made of synthetic resin, which engages with and separates from the engaging recess 70g of the disk cartridge 70, is attached via a rectangular leaf spring 54 so as to protrude inside the right side portion 52. Further, a horizontal piece 52a is formed at the center of the right side 52 of the loading slider 50 by bending. A disk cartridge insertion completion detection switch 55 is attached to the rear side of the horizontal piece 52a.
An eject completion detection switch 56 is provided on the front side. The swingable operation lever portion 55a of the disc cartridge insertion completion detection switch 55 projects inward from the long groove hole 42d of the right side portion 42 of the cartridge holder 40, and the right side of the cartridge holder 40 before the sliding of the loading slider 50. It is located behind the protruding portion 42b of the portion 42. The push-type operation lever 56a of the eject completion detection switch 56 is located at a position facing the protrusion 42e of the right side 42 of the cartridge holder 40.

A pin 57 is fixed by caulking at the center of the horizontal piece 52a of the loading slider 50 so as to project vertically downward. The pin 57 is loosely fitted in a concave portion 60a of a first swing plate 60 which is swingably supported by a shaft 59 of a column 58 standing upright on the sub-chassis 15. An arc cam groove 60b is formed on the first swing plate 60 on the drive gear 24 side. Above the first swing plate 60, a second swing plate 61 is swingably supported by the shaft 59. The second swinging plate 61 is provided on the drive gear 24 side with the arcuate cam groove 60b to form the cam groove 6.
3 is formed. A drive pin 65 eccentrically protruding from the upper surface of the drive gear 24 is loosely fitted in the cam groove 63, and the rotation of the drive gear 24 causes the loading slider 50 to move a predetermined distance (for example, one way 16) on the cartridge holder 40. .5 mm). Further, the first swing plate 60
A tension coil spring 66 is formed between the concave portion 60a and the base end 61a of the second rocking plate 61.

The disk cartridge 70 is formed in a housing shape with upper and lower halves, and houses a small (eg, 65 mm in diameter) magneto-optical disk 71 that can be recorded and reproduced therein in a rotatable manner. At the center of the magneto-optical disk 71, a metal chucking hub 72 is fixed. The chucking hub 72 is exposed outside the circular opening 70a in the center of the lower half of the disk cartridge 70. A long guide groove 70b and a short guide groove 70c are formed on both sides of the disc cartridge 70.
A rectangular opening 70d for recording and reproduction is formed in the upper and lower halves on the long guide groove 70b side. This opening 70d
Is made of metal and can be opened and closed by a U-shaped shutter 73. Further, a pair of positioning round holes 70e and positioning long holes 70f are formed before and after the bottom guide side of the long guide groove 70b of the disc cartridge 70, and the front end 73a of the shutter 73 of the long guide groove 70b is formed. Has an engagement recess 70g. The leading end 73a of the shutter 73 is locked in a closed state by a substantially U-shaped lock lever 74 provided on the long guide groove 70b side in the disk cartridge 70. The shutter 73 is urged by a spring (not shown) in a direction to always close the opening 70d.

According to the disk cartridge loading apparatus 1 of the embodiment, as shown in FIG. 1, when the disk cartridge 70 containing the magneto-optical disk 71 is inserted into the cartridge holder 40, the right side 42 of the cartridge holder 40 is The long guide groove 70b of the disk cartridge 70 is inserted into the projection 42b of the disk cartridge 70, and the locked state of the shutter 73 of the disk cartridge 70 is released. The disc cartridge 70 with respect to the cartridge holder 40
Is further inserted, the disc cartridge 70 is inserted into the claw 53 projecting from the right side 52 of the loading slider 50 to the inside of the right side 42 of the cartridge holder 40.
The engaging lever 70 of the disc cartridge insertion completion detecting switch 55 attached to the right side 52 of the loading slider 50 is engaged.
is pressed by the disc cartridge 70, the detection switch 55 is turned on, and the ejection completion detection switch 56 is turned off, so that the loading motor 29 is turned off.
N. The disc cartridge insertion completion detection switch 55 is operated only when the disc cartridge 70 is correctly inserted into the cartridge holder 40, as shown in FIG. Loading slider 50
Of the disk cartridge 7
It also serves as a countermeasure against erroneous insertion of 0.

When the disk cartridge 70 is completely inserted into the cartridge holder 40, the motor 29 is turned on.
Then, the drive gear 24 rotates clockwise in the figure via the worm gear 30 and the reduction gears 25 to 28 attached to the motor 29. Due to the rotation of the drive gear 24, the drive pin 65 eccentrically protruded on the drive gear 24 moves rearward. The first and second swing plates 6 are driven by the drive pins 65.
The reference numerals 0 and 61 swing clockwise in the drawing to slide the loading slider 50 rearward with respect to the cartridge holder 40 (forward movement). The loading slider 50 is loaded in the horizontal direction.
The disc cartridge 70 is pulled onto the turntable 3 by the claw 53 of the cartridge holder 40, and when the disc cartridge 70 is pulled by the loading slider 50, the right side portion 4 of the cartridge holder 40 stopped.
The shutter 73 of the disc cartridge 70 is opened by the second protrusion 42b.

After the loading slider 50 completes the retraction of the disk cartridge 70, the drive gear 2
4 intermittent gear 24a is mounted on the rack 23 of the main slider 20.
Mesh with. As a result, the main slider 20 slides backward (moves forward) with respect to the chassis 2. Due to the forward movement of the main slider 20, the cartridge holder 40 in which the pair of engagement pins 43, 43 are loosely fitted into the pair of cam groove holes 22a, 22a of the both side portions 22, 22 of the main slider 20, respectively. Descend. As shown in FIG. 4, the main slider 20 is positioned when one of the protrusions 22c of the main slider 20 abuts on the operating lever 36a of the position detection switch 36 when reproducing the magneto-optical disk 71 of the disk cartridge 70. 5, and when recording on the magneto-optical disk 71, as shown in FIG. 5, until the other protrusion 22 d of the main slider 20 hits the operation lever 37 a of the position detection switch 37 and is positioned. It is further slid backward by the rack 23 or the like. When the cartridge holder 40 is lowered, the loading slider 50 is also lowered together with the cartridge holder 40 (for example, lowered by about 3.2 mm). Due to these lowering, the positioning round holes 70 e and the positioning long holes 70 f of the front and rear of the disk cartridge 70 held by the loading slider 50 and held by the cartridge holder 40 are positioned by the positioning pins for guiding the sliding of the main slider 20 on the chassis 2. The disk cartridge 70 is positioned on the chassis 2 of the disk cartridge 70 by being fitted into a pair of front and rear guide pins 18, 18 which also serve as a pair. At this time, the respective holes 70e and 70f of the disc cartridge 70 are reliably guided by the inverted conical heads 18a of the respective guide pins 18, and are securely fitted into the shaft portions 18b of the respective guide pins 18 to perform the loading operation. Is completed, the disk cartridge 70 does not rattle in the radial direction of the magneto-optical disk 71, and good recording and reproduction can be performed.
When the rack 23 of the main slider 20 and the intermittent gear portion 24a of the drive gear 24 start to mesh, the first swing plate 61
, The rack 23 is slightly moved to be surely engaged.

In the reproducible state where the forward movement of the main slider 20 is positioned by the position detection switch 36 and stopped (moved about 5 mm from the initial state and stopped).
The rack 23 has moved to the position shown in FIGS. At this time, the slide plate 35 is moved to the position indicated by the solid line in FIG.
The distal end side of the support arm 10 to which the optical pickup 2 is attached is swung in a direction approaching the optical pickup 7 side. Further, the forward movement of the main slider 20 is positioned by the position detection switch 37 and stopped (moved about 7 mm from the initial state and stopped).
In the recording enabled state, the rack 23 moves further rearward (upward in the figure) than the position shown in FIG. At this time,
The slide plate 35 is moved to the position indicated by the two-dot chain line in FIG.
The tip side of the support arm 10 to which the optical pickup 2 is attached is swung in the direction closest to the optical pickup 7 side. In the standby state of the support arm 10, the slide plate 35 is
Are located at the position indicated by the chain line in FIG. The reproduction of the magneto-optical disk 71 of the disk cartridge 70 is performed by the optical pickup 7 and the like, and the recording is performed by the optical pickup 7 and the magnetic head 12 and the like.

The eject operation of the disk cartridge 70 is performed by rotating the motor 29 in the reverse direction, and the main slider 20 and the loading slider 50 return in the opposite direction. At this time, as shown in FIG. 2, the operation lever portion 56a of the ejection completion detection switch 56 attached to the loading slider 50 hits the projecting portion 42e of the cartridge holder 40 to turn on the ejection completion detection switch 56, thereby performing the ejection operation. Is completed.

As described above, the disk cartridge 70 inserted into the cartridge holder 40 and engaged with the claw portion 53 of the loading slider 50 is retracted by the reciprocating sliding of the loading slider 50, and is configured to be ejectable. Since the cartridge holder 40 and the loading slider 50 are configured to be movable up and down with respect to the main slider 20 by reciprocating sliding of the slider 20, the disk cartridge 70 is loaded / unloaded. 70 can be reliably and smoothly loaded or unloaded to eject. Therefore, as before,
There is no need for an urging means such as a tension coil spring for urging each member or a locking means such as a lock lever for locking each member, so that the number of parts can be greatly reduced and cost reduction is achieved. In addition to this, the structure of the entire apparatus can be simplified, and the apparatus can be further reduced in weight, size, and thickness.

The shutter 7 of the disk cartridge 70 is provided inside the right side 42 of the cartridge holder 40.
Projection 42b that contacts shutter 3 and opens and closes shutter 73
The shutter 73 of the disk cartridge 70 can be easily opened and closed by the reciprocating movement of the loading slider 50. This eliminates the need for a conventional shutter opening / closing lever, and in this regard, the cost and weight and thickness of the entire apparatus can be reduced, and the disk is mounted on the right side 52 of the loading slider 50 behind the projection 42b. Cartridge insertion completion detection switch 55
Is provided, the disk cartridge 70 can be pulled in by the loading slider 50 only when the disk cartridge 70 is correctly inserted into the cartridge holder 40, and the erroneous insertion of the disk cartridge 70 can be reliably prevented. Further, since a projection 42e is provided outside the right side 42 of the cartridge holder 40, and an ejection completion detection switch 56 is provided outside the right side 52 of the loading slider 50 opposed to the projection 42e, the disk cartridge 70 Can be reliably and smoothly performed.

Further, since the main slider 20 and the loading slider 50 are slid by the rack 23 driven by one motor 29 and the oscillating plates 60 and 61, the number of driving sources is reduced as much as possible. From this point, the cost and the weight and thickness of the entire apparatus can be reduced. Further, the cam 31 is moved by the reciprocating movement of the rack 23.
The support arm 10 to which the magnetic head 12 is attached can be freely switched to the standby position, the reproduction position, and the recording position via this, so that the number of parts can be greatly reduced from this point and cost reduction can be achieved. As well as simplifying the overall structure of the device,
The thickness can be further reduced. Furthermore, a pair of positioning switches 36 and 37 mounted on the chassis 2
A pair of protrusions 22c and 22d are provided on the right side portion 22 of the main slider 20 facing the main slider 20, so that the reproduction position and the recording position of the main slider 20 are reliably detected, and the main slider 20 is accurately positioned at each of these positions. And good reproduction and recording can be performed.

According to the above-described embodiment, the loading apparatus for a disk cartridge containing a small magneto-optical disk capable of recording and reproduction has been described. However, the above-described embodiment is applied to a disk cartridge containing a magnetic disk capable of recording and reproduction. Of course, it can be applied.

[0029]

As described above, according to the disc cartridge loading apparatus of the present invention, the loading slider slides reciprocally with respect to the cartridge holder via the pin eccentrically provided on the drive gear driven by one motor. Then, the disk cartridge inserted into the cartridge holder and engaged with the claw portion of the loading slider is retracted, and is configured to be ejectable. In addition, the drive gear is rotated to rotate the disk cartridge through a rack provided on the main slider. Since the main slider is reciprocally slid with respect to the chassis, and the cartridge holder and the loading slider are configured to be able to move up and down with respect to the main slider, the disk cartridge can be smoothly and reliably moved to a predetermined position by the single motor. Loading operation or It is possible to-object behavior.
Therefore, unlike the related art, there is no need for an urging means for urging each member, a locking means for locking each member, and the like, so that the number of parts can be significantly reduced and cost can be reduced. The entire structure can be simplified to achieve a reduction in weight, size, and thickness.

A support arm having a magnetic head for recording and reproducing data on and from a disk in a disk cartridge is supported on the chassis so as to be vertically swingable, and the support arm is mounted on a rack of the main slider via a cam. The cam groove is provided with three steps so that the swing range of the support arm can be switched between a standby position, a reproduction position, and a recording position. Can be used as a drive source to swing the support arm in three stages so as to switch to the three positions. Unlike the conventional case, a drive means such as a plunger for swinging the support arm is not required. In addition, the number of parts can be reduced to reduce costs and simplify the structure of the entire device, thereby further reducing the size and weight of the device.

Further, a pair of protrusions are provided at a predetermined distance outside the main slider, and a reproducing position and a recording position of the main slider are respectively detected on a side of the chassis opposed to the pair of protrusions. Since the pair of positioning switches are provided, the main slider can be accurately positioned at each of the positions. Thereby, good reproduction and recording become possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disc cartridge loading device and a disc cartridge according to an embodiment of the present invention.

FIG. 2 is a right side view of the disc cartridge loading device.

FIG. 3 is a plan view of a main part of the disk cartridge loading device at an initial stage.

FIG. 4 is a plan view of the disc cartridge loading device during reproduction.

FIG. 5 is a plan view of a main part of the disc cartridge loading device during recording.

FIG. 6 is an explanatory plan view showing a relationship between a rack, a cam, and a slide plate of the disc cartridge loading device.

FIG. 7 is an exploded perspective view of a conventional disk cartridge loading device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Disc cartridge loading device 2 ... Chassis 10 ... Support arm 12 ... Magnetic head 20 ... Main slider 22, 22 ... Both sides 22c, 22d ... A pair of protrusions 23 ... Rack 23b ... Cam groove 24 ... Drive gear 29 ... Motor 31 ... Cams 36,37 ... A pair of positioning switches 40 ... Cartridge holders 42,42 ... Both sides 50 ... Loading slider 53 ... Claws 65 ... Drive pins 70 ... Disk cartridge 70g ... Engagement recess 71 ... Magneto-optical disk

Claims (3)

(57) [Claims] 1. A main slider slidably supported by a chassis, and a cartridge holder supported vertically movably between both sides of the main slider to insert and hold a disk cartridge between both sides. A loading slider slidably supported by the cartridge holder and having a claw on a side thereof for engaging and disengaging an engagement recess of a disk cartridge inserted into the cartridge holder; And a drive gear meshed with the rack and driven by a motor.The loading slider is reciprocally slid via a pin eccentrically provided on the drive gear, so that the cartridge is moved to the cartridge holder. The disk cartridge inserted and engaged with the claw portion of the loading slider is pulled out, and A disc cartridge, wherein the cartridge holder and the loading slider are vertically movable with respect to the main slider by reciprocatingly sliding the main slider by rotation of the drive gear. Loading device. 2. A support arm having a magnetic head for recording and reproducing data on and from a disk in the disk cartridge is supported on the chassis so as to be vertically swingable, and the support arm is supported by a cam of the main slider via a cam. It is connected to a cam groove formed in the rack, and three step portions are provided in the cam groove so that the swing range of the support arm can be freely switched between three positions of a standby position, a reproduction position, and a recording position. 2. The disc cartridge loading device according to claim 1, wherein: 3. A pair of projections are provided outside the main slider at a predetermined distance from each other, and a reproduction position and a recording position of the main slider are respectively detected on a side of the chassis opposed to the pair of projections. 2. A system according to claim 1, wherein a pair of positioning switches are provided.
The disc cartridge loading device as described in the above.