JPH06223473A - Disk cartridge driving device - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent damage to the head and objective lens due to shutter trouble of the disk cartridge at the time of loading, and to prevent erroneous insertion of the cartridge. [Structure] Chassis 1 of disk cartridge drive
08, the limiting plate 114, the upper lid cartridge holder and the like are provided with engaging members 101 such as pins or ribs so that the shutter does not hit when the shutter is opened during loading, but hits when the shutter is closed. The engagement member 101 prevents the shutter from sliding to the closed state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device for driving a disk carrier by vertically moving a spindle motor with respect to a disk carrier surface arranged at a fixed position, and particularly when loading a disk cartridge. The present invention relates to a disk cartridge drive device for preventing the shutter trouble.

[0002]

2. Description of the Related Art Various types of conventional disk cartridge drive devices for magnetic recording / reproducing and magneto-optical recording / reproducing have been proposed. As the disk cartridge driving device, the present applicant has previously provided a shutter opening / closing pin at one end of the shutter opening / closing arm according to Japanese Utility Model Laid-Open No. 3-14760, and the shutter opening / closing pin is located near the cartridge insertion opening of the cartridge holder. When a turning spring is applied to the shutter opening / closing arm with a return spring to insert the disk cartridge into the cartridge holder from the cartridge insertion opening, the shutter opening / closing pin engages with the pin engaging portion provided on the shutter of the disk cartridge, In the disk cartridge drive device in which the shutter opening / closing arm rotates against the spring force of the return spring to open the shutter of the disk cartridge by the shutter opening / closing pin, the cartridge holder is moved into the cartridge holder of the disk cartridge. When the shutter was opened by insertion attempts slide in the closing direction, proposed that the manner provided stopper projections for preventing sliding of the shutter in contact with this.

According to this, the shutter opening / closing pin of the shutter opening / closing arm slips out from the pin engaging portion of the shutter due to a trouble of the shutter opening / closing arm when the disc cartridge is lowered (during loading), and the shutter is returned to the shutter return spring. It is possible to prevent the head from being broken by the sliding force in the closing direction of the shutter when the sliding force in the closing direction (returning direction) is applied by the spring force.

Such a stopper protrusion is provided at a substantially central position of the cartridge holder so that the shutter does not hit when the disc cartridge is properly inserted into the disc holder and the shutter slides open. The upper surface of the cartridge holder is formed so as to be cut down at one end thereof.

Further, as a disc cartridge to be inserted into such a disc cartridge driving device, ones shown in FIGS. 15 and 16 have been proposed. FIG. 15 is a perspective view of the disc cartridge as seen from the back side, and FIG. 16 is a perspective view of the disc cartridge as seen from the front side.

In FIG. 15 and FIG. 16, reference numeral 200 denotes a magneto-optical disk cartridge as a whole, and an upper half 201 and a lower half 202 are each made of a substantially square synthetic resin, and an MO between the upper and lower halves 201 and 202. Such a magneto-optical disk 203 is rotatably pivotally mounted, and a center hole 205 for disk rotation is formed at the center of the disk 203.

The lower half 202 is provided with a center hole 206 for rotating the disk 203, and an opening window 207 for communicating with the center hole 206 so that the optical pickup faces in the radial direction of the disk 203. Similarly, an opening window 2 for allowing the magnetic head to face the upper half 201 as well.
A shutter 20 as a shielding means having a U-shaped cross section is formed on the back surface of the disc cartridge 200 by punching 08.
9 is configured to be slidable along the back surface of the disc cartridge 200, and the shutter is provided at a position corresponding to the opening window 207 and the center hole 206 of the lower half 202 of the shutter 209 and a position corresponding to the opening window 208 of the upper half 201. 20
Shutter windows 210 and 211 are formed so that both sides of the disc 203 are exposed when the cover 9 is opened. Further, as shown in FIG. 16, a spring 213 for biasing the shutter 209 so that the shutter 209 is always closed is provided with the shutter 209 and the disc 209. It is configured to be interposed between the cartridges 200. 2
Reference numeral 12 is a pull-in pin insertion hole, 214 is an engaging end that first engages with a shutter opening pin 27, which will be described later, and 215 is an inclined portion for preventing erroneous insertion.

The above-mentioned disc cartridge and disc cartridge driving device are for driving the disc in the disc cartridge to rotate by lowering or raising the disc cartridge inserted in the cartridge holder with respect to the spindle motor fixed to the chassis side. is there.

On the other hand, the applicant of the present invention fixed a cartridge holder for loading a disk cartridge as a disk cartridge driving device in the disk cartridge driving device, and vertically moving a spindle motor to rotate the disk in the disk cartridge. We have proposed a disk cartridge drive that is designed to be driven. FIG. 17 shows the configuration of this disk cartridge drive device.
Described in.

A disk cartridge driving device for recording or reproducing a magneto-optical disk is a disk cartridge 20.
A disk loading mechanism for pulling 0 to a predetermined mounting position, a disk rotation drive mechanism for rotationally scanning the magneto-optical disk 203, and a cartridge for positioning the disk cartridge 200 with respect to the disk cartridge 200 held at the predetermined mounting position. The disk cartridge 200 is provided with a positioning means and a disk rotation drive mechanism.
An elevating mechanism that is moved up and down with respect to the magneto-optical disk 20
3, an optical system for performing a radial transfer operation on the inner and outer peripheries of the optical disk 3 for recording and / or reproducing an information signal on the magneto-optical disk 203, and an external magnetic field for recording an information signal on the magneto-optical disk 203 A mechanism such as a magnetic head device for applying a voltage is provided.

Among these, the disk loading mechanism is
As shown in FIG. 17, the cartridge holder 1 is provided with an auto-injection mechanism that automatically pulls the disc cartridge 200 into a predetermined mounting position. The cartridge holder 1 is provided so as to penetrate in the front-rear direction and functions as an insertion port for the disc cartridge 200.
It is formed as a flat housing having a cartridge insertion / removal opening 2 and a rectangular cross section. A plurality of insertion guide pieces 3 and 4 are provided near the corners of the cartridge insertion / removal opening 2 to facilitate the insertion of the disc cartridge 200 into the cartridge holder 1.

The auto-injection mechanism provided in the cartridge holder 1 includes a first injector plate 5 which is slidable in the inserting / removing direction of the disk cartridge 200, and the movement of the first injector plate 5 causes the disk cartridge 200 to move. The disc cartridge 2 is inserted into the cartridge pull-in pin insertion hole 213 of the disk cartridge 200.
The second injector plate 6 for drawing in 00 and the first
And the third injector plate 7 for forcibly sliding the injector plate 5 in the depth direction of the cartridge holder 1.

The first inject plate 5 is provided on the lower plate portion on one side edge of the cartridge holder 1 in the insertion direction of the disc cartridge 200. The first inject plate 5 engages with the pair of guide shafts 8 and 9 which are set up on the lower plate portion of the cartridge holder 1 and is arranged in the insertion direction of the disc cartridge 200 into the cartridge holder 1 as shown in FIG. As shown by the middle arrow A, the forward / backward operation is possible. That is, at the positions corresponding to the guide shafts 8 and 9 of the first injection plate 5, the forward and backward operation guide grooves 10 and 11 formed in the insertion direction of the disc cartridge 200 and formed as elongated holes are provided. The guide shafts 8 and 9 are inserted into and engaged with the advancing / retreating operation guide grooves 10 and 11, so that the first injector plate 5 can be advanced / retreated.

The first inject plate 5 is provided with a notch 13 which engages with an inject plate operating pin 12 provided in a third inject plate 7 described later. The notch 13 is provided on the front end side of the first injector plate 5 extending to the cartridge insertion / removal opening 2, and has a size that is large enough to expose the injector plate operation pin 12 and has one open U-shape. Formed as a groove. Further, in the depth direction of the first injection plate 5, the disc cartridge 20 to be inserted into the cartridge holder 1 is inserted.
Cartridge contacting part 1 for abutting the shutter 209 of 0
4 are provided. The cartridge contact portion 14 is bent and formed so as to face the inside of the holder by a notch (not shown) cut in the lower plate portion of the cartridge holder 1.

Further, the cartridge holder 1 is provided at the rear end edge portion of the first injector plate 5 in the depth direction.
A trigger arm rotating operation piece 17 that comes into contact with a trigger arm pin 16 that is planted on a trigger arm 15 provided on the lower plate portion is provided. The trigger arm turning operation piece 17 is similar to the cartridge contact portion 14 described above.
The lower part of the cartridge holder 1 is bent so as to face the inside of the holder through a notch. The trigger arm 15 that comes into contact with the trigger arm rotating operation piece 17 serves to maintain the unloading state of the slide member, and rotates about a support shaft 18 provided on the lower plate portion of the cartridge holder 1. It is provided freely. The trigger arm 15 has a locking claw 15a on its tip end side that engages with a slide member locking pin provided on the slide member, and has a cylindrical trigger arm pin 16 that contacts the trigger arm rotating operation piece 17.
have. The trigger arm 15 is elastically biased by the torsion coil spring in a direction in which the locking claw 15a is engaged with the slide member locking pin.

On the other hand, the second injector plate 6 is
It is attached to the rear end side of the first injector plate 5 so as to be rotatable in the direction shown by arrow B in FIG. . Then, a cartridge hold pin 21 that is fitted and engaged with a cartridge pull-in pin fitting hole 212 of the disc cartridge 200 that is inserted into the cartridge holder 1 through the cartridge insertion / removal opening 2 is planted on the second injector plate 6. Has been done. The cartridge hold pin 21 is used for the disc cartridge 20.
In the state before 0 is inserted in the cartridge holder 1, it is located outside the cartridge holder 1. Then, when the disk cartridge 200 is inserted into the cartridge holder 1 and the cartridge pull-in pin fitting hole 212 and the cartridge hold pin 21 are located at positions opposite to each other, the second injector plate 6
Is rotated so that the cartridge hold pin 21 erected in the injector plate 6 can be inserted into the cartridge pull-in pin fitting hole 212.

That is, the second injector plate 6
In the unloading state, the cartridge hold pin 21 is positioned outside the cartridge holder 1, and the disc cartridge 200 is inserted into the cartridge holder 1 and the cartridge pull-in pin fitting hole 212 and the cartridge hold provided in the disc cartridge 200. A cam groove 22 is formed so that when the pin 21 comes to a position facing the pin 21, the second injector plate 6 rotates to insert the cartridge hold pin 21 into the cartridge pull-in pin fitting hole 212. ing. A guide shaft 9 that is set up in the cartridge holder 1 and faces the advancing / retreating operation guide groove 11 provided at the rear of the first injector plate 5 is inserted into and engaged with the cam groove 22.

The third inject plate 7 is forcibly sliding the first inject plate 5 in the depth direction of the cartridge holder 1, and is in the direction substantially orthogonal to the inserting direction of the disc cartridge 200. The lower plate 1 is rotatable about the support shaft 23. Then, at one end edge portion of the third injector plate 7, an injector plate operation pin 12 that engages with a notch portion 13 provided in the first injector plate 5 is planted. Also, this third
The other end edge portion of the inject plate 7 has an inject plate holding pin 24 that comes into contact with an inject plate holding piece provided on one slide piece of the slide member.
Has been planted. The third inject plate 7 is constantly pulled by the tension coil spring 25 hung across the inject plate operating pin 12, the guide shaft 9 facing the advancing / retreating operation guide groove 11 and the cam groove 22, and indicated by an arrow C in FIG. It is biased to rotate in the direction.

Further, the cartridge holder 1 is provided with a shutter opening device for automatically opening the shutter 209 of the disk cartridge 200 inserted into the cartridge holder 1 through the cartridge insertion / removal opening 2. Such a shutter opening device is a shutter serving as a support member provided mainly with a cam groove 26 formed in the upper plate portion 1a of the cartridge holder 1 and a shutter opening pin 27 that is a shutter opening member that moves to face the cam groove portion 26. It is composed of an open pin support member 28.

The cam groove portion 26 is formed so as to draw a locus that opens the shutter 209 of the disc cartridge 200 inserted into the cartridge holder 1 in conjunction with the inserting operation of the disc cartridge 200. That is, the cam groove 26 is provided in the disk cartridge 2
An inclined portion 26a formed on the starting end side that is inclined with respect to the insertion direction of 01 (the direction indicated by the arrow D in FIG. 17);
An arcuate portion 26b forming an arc formed continuously with the inclined portion 26a, and a straight portion 26c provided continuously with the arcuate shape 26b on the rear end side substantially parallel to the insertion direction of the disc cartridge 200. Consists of.

The inclined portion 26a of the cam groove 26 serves to generate a component force for opening the shutter 209 of the disc cartridge 200 inserted into the cartridge holder 1 through the cartridge insertion / removal opening 2. The inclination angle of the inclined portion 26a may be at least 25 degrees with respect to the insertion direction of the disc cartridge 200 in order to generate a component force for rotating the shutter opening pin 27 when the disc cartridge 200 is inserted. is necessary.

The arcuate portion 26b continuously provided to the saw sloped portion 26a has a shutter opening pin supporting member 2
It serves to make the movement locus of 8 as small as possible. When such a portion is straight, the shutter opening pin support member 28
Of the shutter opening pin supporting member 2
The rear end portion 28a of the cartridge 8 bulges outward more than the cartridge holder 1 and rotates, causing an accident of contact with another member provided outside the cartridge holder 1. On the other hand, the linear portion 26c continuously provided with the arc-shaped portion 26b serves to move the disc cartridge 200 to the rear end portion of the cartridge holder 1 with the shutter 209 fully opened. By moving the disc cartridge 200 to the rear end of the cartridge holder 1 with the shutter 209 opened, the magnetic head and the optical pickup device and the disc cartridge 20 are moved.
The contact with 1 can be avoided, and the mechanism for moving the magnetic head up and down can be omitted.

The shutter opening pin support member 28 is formed as a plate-like member having a substantially rectangular plane shape in which both the front end portion 28b and the rear end portion 28a are arcuate.
8b has a shutter opening pin 27 that faces the cam groove portion 26. The shutter opening pin 27 is formed as a columnar pin and hangs in the cartridge holder 1 via the cam groove portion 26. Further, the shutter opening pin support member 28 is provided with a slide groove 29 having a long hole shape extending from the rear end portion 28a to substantially the central portion. A moving guide pin 31, which is an engaged portion and is movable along a guide portion 30 formed on the cartridge holder 1, is engaged with the slide groove 29. The guide portion 30 has a linear portion 2 of the cam groove portion 26.
It is formed as a groove having a long hole shape provided in parallel with 6c,
The movement guide pin 31 is adapted to be freely movable. On the other hand, the movable guide pin 31 has a disk-shaped flange provided on the upper and lower ends of a columnar pin having a size large enough to move toward the guide portion 30.

The shutter opening pin support member 28 thus constructed is pulled by the tension coil spring 32, as shown by arrow E in FIG.
Is always urged in a direction to position the cam groove portion 26 on the starting end side. That is, the tension coil spring 32
Engages one end with a spring engagement piece 33 provided on the shutter opening pin support member 28, and the other end with the cartridge holder 1
The shutter opening pin 27 is located at the starting end position of the cam groove portion 26, that is, the initial position of the inclined portion 26a by being engaged with the spring engaging piece 34 formed by cutting and raising the upper plate portion 1a.

Further, the upper plate portion 1a of the cartridge holder 1
A cartridge insertion position restricting member 35 for restricting the position of the disk cartridge 200 to be inserted into the cartridge holder 1 so as not to be inserted further inward than the loading position which is a predetermined mounting position is formed in the. This cartridge insertion position regulating member 35
Are provided so as to project further rearward from the rear end edge of the upper plate portion 1 a, and the tip end portion is bent and formed so as to hang inward of the cartridge holder 1. Further, the cartridge holder 1 is provided with a cutout portion 36 that faces the magnetic head and the optical pickup device.

Further, the cartridge holder 1
The disk cartridge pressing member 38 is a pressing means for pressing and fixing the disk cartridge 200 to the cartridge positioning portion 37 for positioning the cartridge provided in the cartridge holder 1 in the height direction at the time of loading. The disc cartridge pressing member 38 is provided at substantially the center of both side walls of the cartridge holder 1 in the insertion direction of the disc cartridge 200.
Notch portions 39, 4 cut out over a part of the upper plate portion 1a
0 for each. These disc cartridge pressing members 38 contact the support portion 41 fixed to the lower plate portion of the cartridge holder 1 and the upper surface of the disc cartridge 200 only at the time of loading to elastically eject the disc cartridge 200 to the cartridge positioning portion 37 side. The cartridge pressing portion 42 is configured to urge the cartridge pressing portion 42, and the cartridge avoiding portion 43 that avoids the cartridge pressing portion 42 to the non-contact position with respect to the disk cartridge 200 in the unloading state.

Further, the cartridge holder 1 is provided with an erroneous insertion preventing mechanism that prevents the disc cartridge 200 from being inserted into the cartridge holder 1 when the cartridge 200 is erroneously inserted. That is, FIG. 17 and FIG.
A guide groove 45 is formed near the insertion / removal opening 2 on the upper surface of the cartridge holder 1 with a predetermined curvature in a direction substantially orthogonal to the disc cartridge insertion direction.

Further above the cartridge holder 1, there is a pivot 4
6 is erected, and a substantially rectangular plate-shaped turning piece 47 is attached to the pivot 46.
Is pivotally attached to. A pin 48 directed inward (downward) of the cartridge holder 1 via a guide groove 45 is planted at the tip of the rotating piece 47, and is formed by a cut-and-raised piece formed on the upper surface of the cartridge holder 1. A spring 50 is stretched between the stopper 49 and the turning piece 47 to move the turning piece 47.
Is biased counterclockwise about the pivot 46, and the pin 48 is constantly pressed against the right end of the guide groove 45.

The operation of the above arrangement will be described with reference to FIG.
In the case where the disk cartridge 200 has the inclined portion 215 at the left end on the entire surface as shown by 6, the pin 48 protruding downward from the guide groove 45 is inserted into the insertion / removal opening 2 of the cartridge holder 1. 20
It contacts the inclined portion of the inclined portion 215 of 0. When the disk cartridge 200 is further pushed in the direction of arrow D in this state, the pin 48 is pushed by the inclined portion against the biasing force of the spring 50, and the turning piece 47 turns clockwise about the pivot 46. Is held at the position indicated by the broken line.

On the other hand, since the disc cartridge having no inclined portion 215 has no inclined portion, the pin 48 is in contact with the flat portion on the front surface of the disc cartridge so that the pin 48 is caught and cannot press the disc cartridge any further. Done

[0031]

According to the disk cartridge driving device described in the above-mentioned conventional structure, the cartridge erroneous insertion preventing mechanism is provided on the upper surface of the cartridge holder 1 for inserting or ejecting the disk cartridge 200 into the insertion / removal opening 2. In addition to the guide groove 45, the pivot 46 for rotating the rotating piece 47, the pin 48, the engaging portion 49 for biasing, and the spring 50, these are required to rotate within a predetermined range. There is a problem that a large area is occupied in a narrow range of the cartridge holder 1.

Further, in the disk cartridge 200 of FIGS. 11 and 12 described in the above-mentioned conventional structure, the shutter 209 is biased by the spring 213 provided inside the upper and lower halves 201 and 202 in the non-use state, and the shutter is always closed. It is made, but such a return spring 213
As described in Japanese Utility Model Publication No. 3-14760, an accident such that the spindle motor of the disk drive mechanism as shown in FIG. 13 drops during loading occurs. At times, when the shutter 209 of the disk cartridge is closed by the biasing force of the spring 213, the magnetic head or the objective lens is closed by the shutter 209.
It causes the damage such as being damaged by.

The present invention is intended to provide a disk cartridge driving device which solves the above problems. The object of the present invention is to use only one rib or pin, and to provide a wide movable range on the disk holder. It is an object of the present invention to provide a disk cartridge drive device that does not require a mechanism for preventing the erroneous insertion of the disk cartridge and that does not damage the head or the objective lens in the unlikely event.

[0034]

DISCLOSURE OF THE INVENTION A disk cartridge driving device of the present invention, as an example thereof is shown in FIGS. 1 to 3, fixes a disk cartridge 200 in which a disk carrier 203 is pivotally mounted. The holding means 1 for holding the disk carrier in the position and the disk carrier 20 of the disk cartridge 200
When the disk cartridge 200 is inserted through the disk cartridge insertion / removal opening 2 of the holding means 1, when the disk cartridge 200 is inserted through the disk cartridge insertion / removal opening 2 of the holding means 1, the elevating means 113 is mounted so as to vertically slidably contact the three surfaces and drive the disk carrier 203 to rotate.
A disc cartridge drive device 100 configured to engage an engagement portion of a shutter 209 of a disc cartridge 200 with an engagement pin 27 provided on a holding means 1 to open and close the shutter 209. Two
Holding means 1 when the shutter 209 of 00 is opened.
The drive device is provided with an engaging member 101 that can be inserted into the holding means 1 so that it cannot be inserted into the holding means 1 when the shutter is closed and that does not close the opened shutter 209. It is arranged on the fixed part of 100.

[0035]

According to the disk cartridge driving device of the present invention, the engaging member 101 such as a rib or a pin is erected on the fixing portion such as the chassis and the limiting plate, and the shutter 209 is loaded in the loading state.
Since the closing of the lid is prohibited, the broken line of the head and the objective lens can be prevented, and the malfunction of the disk cartridge and the malfunction prevention mechanism need not be provided on the cartridge holder, so that an extremely thin and compact product can be obtained. It becomes possible.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk cartridge driving device of the present invention will be described below with reference to the drawings. Before describing the configuration of this example in FIG. 1, the overall configuration will be described in detail with reference to FIGS. 2 to 4.

In the recording and / or reproducing disk cartridge driving device having the disk loading mechanism of this embodiment, the disk cartridge 200 is inserted and operated in the direction along the main surface portion and held in the cartridge holder. In this disc loading mechanism, a disc table serving as a rotation drive mechanism and a spindle motor for rotating the disc table are moved and operated in a direction approaching the disc of the disc cartridge held in the cartridge holder 1. It
The disc table is moved to a position where it abuts the center of the disc, and holds the disc. Then, this disc table is rotated together with the disc by a spindle motor.

Such a disk cartridge driving device 1
An overall exploded perspective view of 00 is shown in FIGS. 2 and 3. The panel 102 shown in FIG. 3 has a rectangular insertion hole 104 into which the disc cartridge 200 described in the conventional example is inserted. In the disc cartridge 200, a disc carrier 203 such as a magneto-optical disc, a CD or a floppy disc is rotatably arranged between the upper and lower halves 201 and 202. Left and right angles 107L with cushioning members 106 such as rubber legs attached to the rear surface of the panel 102
And 107R are fixed in parallel to the left and right ends so as to be orthogonal to the main surface of the panel 102.

When the disc cartridge 200 is inserted into the insertion hole 104 formed in the panel 102 as shown by an arrow D, the disc cartridge holder shown in FIG. 1 is inserted into the insertion / removal opening 2 of the cartridge,
The shutter 209 of the disc cartridge 200 is configured to be opened by the shutter opening / closing mechanism described in detail in the conventional example to expose a part of the disc carrier 203.

Reference numeral 108 denotes a chassis having a substantially box shape with the front plate removed, and when the disk carrier 203 is a magneto-optical disk, the chassis has a magnetic head 110b as well as an optical pickup 110a. The chassis 108 includes a linear motor 110 and a slide plate 109 for moving the carrier 203 in the radial direction for recording / reproducing.
The slider drive unit 111 for moving the elevating plate 113 up and down by moving it back and forth along the main surface of the optical pickup 115a, the optical systems 115 and 116 divided into two parts of the optical pickup 110a, the magnetic head 110b, and the disk carrier 203 of the optical pickup 110a. A lock member 112 or the like that locks the movement of the above in the radial direction during transportation is fixed. Of course, as described above, the disc cartridge holder 1 is also fixed to the chassis 108.

The slider plate 109 is formed of a substantially U-shaped plate material, and is composed of left and right leg portions 109L and 109R and a front plate 109F connecting the both legs at the front ends. Further, the slider holes 109a and 1 are provided in the left and right legs 109L and 109R.
09b is formed, the guide pin erected on the chassis 8 is inserted into the slider holes 109a and 109b, and the arrow A
The motor of the slider driving unit 111 slides in the −A ′ direction.

The disc cartridge 2 inserted into the disc cartridge holder 1 moves up and down in accordance with the sliding of the slider plate 109 in the AA 'direction.
No. 00 has a cam 109c to 109f for rotatively driving or non-rotatably driving the disk carrier 203, and the cams 109c and 109d as well as the cam grooves 109e and 109f have first and first cams 109a and 109f of an elevating plate 113 described later. The second guide pins 113a and 113b are slidably in contact with 113c and 113d.

The elevating plate 113 is made of a plate material having a substantially T-shaped flat surface, and a spindle motor 113e for rotationally driving the disc carrier 203 in the disc cartridge 200 is fixed to one end of the central plate portion.

Further, first guide pins 113a and 113b are formed in parallel with the front plate which passes through the spindle of the spindle motor 113e and is orthogonal to the central plate portion. The first guide pins 113a and 113b are arranged side by side on the chassis 108. The vertical guide columns 108a and 108b are vertically guided between the guide columns 108a and 108b, and the cam 10 of the slide plate 109 is further guided.
It is inserted into the cam grooves formed in 9c and 109d.

The second guide pins 113c and 113d are connected to the cams 109e and 109 of the slide plate 109 as described above.
The first guide pins 113a and 113a are projected inward of the front plate so as to be inserted into the cam groove formed in f.
It is planted so as to be parallel to 13b.

Reference numeral 114 is a limiting plate for limiting the upward movement of the elevating plate 113, and is screwed to a stud 108c that is erected in the chassis 108 through a through hole 114a. A guide pin 114b is erected downward in the limiting plate 114 through an elevating plate 113.

Disc cartridge guide pins 113f and 113g, which are formed in the lower halves 201 and 202 of the disc cartridge 200 and are inserted into the position regulating holes in the X and Y axis directions of the disc cartridge, are planted on the front plate of the elevating plate 113. The disk cartridge 200 is erected and is inserted into the restriction hole of the disk cartridge 200 inserted into the disk cartridge holder 1 when the lift plate 113 is moved upward, and the positioning is performed.

As shown in FIG. 2, reference numerals 118 and 119 denote an upper lid and a printed circuit board, each of which has a substantially rectangular shape.
It is fixed to the peripheral portion of 8 with a screw or the like via a stud 120.

The limiting plate 114 is enlarged in the same manner as the elevating plate 113 above, and further explained with reference to FIG. 4, the spindle motor 113e is a rotary drive motor (not shown) in a cylindrical spindle support member 150. Is built in. In this spindle support member 150, an annular flat surface 150a opposite to the side facing the chassis 108 serves as a disk mounting surface on which the disk carrier 203 housed in the disk cartridge 200 is mounted. There is. And this spindle support member 1
In the magnetic disk 50, a magnet 15 for attracting a disk is formed so that the chucking hub of the disk carrier 203 can be held by a magnetic attraction force in a recess 151 formed as a circular recess at a position lower than the disk mounting surface 150a.
2 are provided. The magnet 152 has a recess 151.
It is formed as a disk large enough to be stored inside,
The center has a spindle shaft insertion hole through which the spindle shaft 153 is inserted. The spindle motor 11
The spindle shaft 153 of 3e is provided at the center of the concave portion 151 so as to project from the disk mounting surface 150a.

Then, this spindle motor 113e
Is loaded with the disk cartridge 2 along with the loading operation.
It is attached to an elevating plate 113 which is driven up and down in the contact and separation direction with respect to 00. That is, the spindle motor 113
e is the spindle support member 1 facing the chassis 108.
A disk-shaped spindle mounting portion 155 is provided on the outer peripheral edge of the lower end side of 50, and the spindle mounting hole 157 provided in the elevating plate 113 is aligned with the circular mounting hole 156 provided in the spindle mounting portion 155. It is fixed with screws.

Further, the spindle motor mounting portion 155 of the spindle motor 113e is provided with circular spindle lifting guide holes 158 at positions facing each other passing through the center of the spindle support member 150. The spindle lifting guide hole 158 has an annular spindle height supported at a predetermined height position by a plurality of (three in this example) studs 108c (see FIG. 1 and FIG. 3) provided on the chassis 108. A guide pin 114b for raising and lowering the spindle of the limiting plate 114 that determines the position is inserted. That is, the spindle motor 113e can be moved up and down along the guide pins 114b by inserting the spindle lift guide holes 158 into a pair of spindle lift guide pins 114b provided on the limiting plate 114. .

Limit plate 114 for positioning the spindle height
Is formed in an annular shape having a spindle insertion hole 162, which is circular and has a size large enough to allow the spindle support member 150 to be inserted therethrough. And this limiting plate 1
A through hole 114 for attachment for fixing the limiting plate 114 on the stud 108c is provided at a position facing the stud 108c provided on the chassis 108 on the outer peripheral edge of the stud.
a is provided. The annular lower surface 114c of the limiting plate 114 serves as a spindle height reference surface that regulates the height of the spindle motor 113e by contact with the lifting plate 113 lifted by the lifting mechanism. That is, the lifting plate 113 to which the spindle motor 113e is attached is lifted by the lifting mechanism, and the position where the lifting plate 113 contacts the lower surface 114c of the limiting plate 114 is the height reference position of the spindle motor 113e.

The elevating mechanism is disposed on the bottom surface of the chassis 108 and has a cartridge positioning means for positioning the disc cartridge 200 with respect to the disc cartridge 200 held in the cartridge holder 1 by the disc loading mechanism and a disc rotation drive mechanism. The lift plate 113 provided with the disk cartridge 20
It is composed of a slide plate 109 which is moved up and down in accordance with a 0 loading operation.

The lift plate 113 is a spindle motor 113.
It is formed as a flat plate having a substantially T-shape in plan view in which a portion to which e is attached is projected. On the lifting plate 113, the spindle support member 1 of the spindle motor 113e is provided at a position corresponding to a portion to which the spindle motor 113 is attached.
A circular spindle support member insertion hole 165 through which 50 is inserted is provided. Further, the limiting plate 11 is communicated with the spindle support member insertion hole 165.
Slot 16 through which the guide pin 114b provided on the No. 4 is inserted
6 is provided. These elongated holes 166 are respectively provided at positions facing the guide pins 114b for raising and lowering the spindle.

Further, the elevating plate 113 is provided with first pins 113a and 113b which constitute a first elevating and lowering drive section for vertically moving the spindle motor 113e. These first pins 113a and 113b are provided with elongated holes 16
6 are rotatably attached to the pin attachment portions 169 and 170 that are bent toward the chassis 108 side on both sides. The first pin 11 rotatably mounted in this way
3a and 113b are provided between a pair of columns 108a and 108b provided on the bottom surface of the chassis 108 with a predetermined space therebetween so that the columns 3a and 113b move up and down while being guided by the columns 108a and 108b.

Further, the lifting plate 113 is a cartridge positioning pin 113f which is a cartridge positioning means for engaging with a cartridge positioning pin engaging hole provided in the disk cartridge 200 to position the mounting position of the disk cartridge 200 in the horizontal direction. , 1
13g is provided. The cartridge positioning pins 113f and 113g are provided at positions facing the cartridge positioning pin engagement holes, respectively.

Further, on the elevating plate 113, the second pins 113c, 1 constituting a second elevating and lowering drive section for vertically elevating and driving the cartridge positioning pins 113f, 113g.
13d is provided. These second pins 113c,
113d is a cartridge positioning pin 113f, 11
It is rotatably attached to a pin attachment portion 177, 178 that is bent toward the chassis 108 at a position close to 3 g.

Since the cartridge holder 1 has the same structure as that described with reference to FIG. 17 except that the disk cartridge erroneous insertion preventing mechanism is not provided, FIG. 2 shows only the entire structure of the chassis 1a.

FIG. 5 shows the slide plate 1 shown in FIGS.
09, the linear motor 110, the slider drive unit 111, the lock member 112, the elevating plate 113, the limiting plate 114, and the optical systems 115 and 116 are assembled on the chassis 108 (not shown in the figure), and the limiting plate 114 and the cartridge are assembled. This shows a state in which the holder 1 is fixed from the upper surface, and the disc cartridge is inserted from the insertion / removal opening 2 of the cartridge holder 1.

FIG. 1 shows the limiting plate 114 fixed on the chassis 108, and the slide plate 109 and the elevating plate 113 are omitted. That is, the cartridge holder 1 is fixed on the cartridge mounting / fixing portion 108d which has a predetermined height from the bottom surface 108e of the chassis 108.
Further, the spindle height limiting plate 114 has a spindle insertion hole 162 formed in the center as a circular through hole having a size sufficient for inserting the spindle support member 150,
At the outer peripheral edge of the limiting plate 114 for positioning the height of the spindle, a mounting portion 114a for mounting the limiting plate 114 is provided at a position facing the ribs 108c, 108c, 108c provided on the bottom surface 108e of the chassis 108. It is fixed with screws or the like.

The lower surface 11 of the limiting plate 114 formed on the circular ring.
As shown in FIG. 4, the guide pins 114b and 114b provided on the 4c are actually inserted into the elongated hole 166 of the elevating plate 113 and the guide hole 158 of the spindle supporting portion 150, and further, the upper surface of the annular portion of the limiting plate 114. As shown in FIGS. 1 and 3, a pin or rib 101 is erected as an engaging member.

The pin or rib 101 is mounted at a position before the shutter 209 of the disc cartridge 200 inserted into the cartridge holder 1 is fully opened, which will be described later.

The operation of the pin or rib 101 as an engaging member will be described below with reference to FIGS. 6 to 11. 6 to 9 are explanatory views of the loading operation. FIG. 6 is a plan view of the cartridge holder 1, and FIG. 10 and FIG. 11 are views as seen from the direction B in FIG.

In FIG. 6, the disc cartridge 200 is inserted into the cartridge holder 1 through the cartridge insertion / removal opening 2 in the proper orientation. Then, the shutter opening pin 27 comes into contact with the engaging end 214 on the front surface of the disc cartridge 200.

Then, when the disc cartridge 200 is further inserted in the cartridge holder 1 from this state, as shown in FIG.
The shutter release pin 27 is pushed by 0 to generate a component force, and the shutter release pin 27 is moved along the inclined portion 26a of the cam groove 26.

That is, when the disc cartridge 200 is pushed inward of the cartridge holder 1, the shutter opening pin support member 28 resists the urging force of the tension coil spring 32 hung across the cartridge holder 1, The guide pin 30 provided on the cartridge holder 1 is rotated around a moving guide pin 31 at an initial position, which is one end side, and a shutter opening pin 27 provided on a tip end portion 28b thereof is moved along a straight line portion 26a of the cam groove portion 26. Move it.

As a result, the shutter 209 opens the window 20 of the disc cartridge 200 as indicated by the arrow H in FIG.
It is moved in the direction to open 7,208.

Further, the disk cartridge 20
When 0 is inserted inward of the cartridge holder 1, the shutter opening pin 27 moves along the arcuate portion 26b of the cam groove portion 26, and the shutter 209 is further moved.
When the shutter opening pin 27 moves along the arcuate portion 26b, the shutter opening pin support member 28 is moved to the initial position, which is the same as when the shutter opening pin 27 moves along the inclined portion 26a. It will rotate around the guide pin 31. That is, in the range in which the shutter opening pin 27 moves from the inclined portion 26a to the arc-shaped portion 26b, the slide groove 2 is formed in the shutter opening pin support member 28.
Since 9 is formed, the movement guide pin 31 is in the initial position. Therefore, in the range from the inclined portion 26a to the arc-shaped portion 26b, the movement locus of the shutter opening pin support member 28 becomes extremely small, and the rear end portion 28a may almost protrude outside the left and right width of the disc cartridge 200. There is no such thing.

In the state shown in FIGS. 6 and 7, the relationship between the pin 101 erected on the limiting plate 114 and the disc cartridge 200 when viewed from the B direction is as shown in FIG. That is, the shutter 2 of the disc cartridge 200
09 has a substantially U-shaped cross section, and the upper half 20
First shutter plate 209 for closing the first opening window 208
a and the second shutter plate portion 209a, which is arranged in parallel to face the first shutter plate portion 209a and closes the opening window 207 of the lower half 202.
Shutter plate portion 209b and the connecting piece portion 2 for connecting the first and second shutter plate portions 209a and 209b.
09c, and a cutout 209d is formed in the lower left end of the connecting piece 209c. This notch 209d
As shown by the broken line, a notch may be formed from the upper and lower portions of the left end, and the narrow width portions W ₁ and W ₂ <W with respect to the full width portion W of the connecting piece portion 209c of the notch portion 209d. .

Then, the pins 10 set up on the limiting plate 114 are arranged.
1 of height h in a state where the shutter 209 is closed contact the entire width portion W of the connecting piece 209c, the height h of the pin 101 is in a state in which the shutter is opened cover width W-W ₁ of the cut-out portion or W- Select a length that fits within W ₂ .

Therefore, in FIG. 10 showing the front side surface of the state of FIGS. 6 and 7, the pin 101 does not hit the connecting piece 209c of the shutter, but if the shutter is not opened, the pin 101 hits the connecting piece 209c. Will come into contact.

When the shutter opening pin 27 reaches the rear edge of the arcuate portion 26b, the shutter opening pin support member 2 for holding the shutter opening pin 27 is held, as shown in FIG.
8 is substantially parallel to the front surface of the disc cartridge 200, and as a result, the opening window 20 of the disc cartridge 200 is formed.
8, 207 are fully opened, and the magneto-optical disk 203 housed in the cartridge 200 is exposed.

Further, when the disc cartridge 200 is inserted into the cartridge holder 1, the movement guide pin 3 is attached to the front surface of the disc cartridge 200.
1 abuts. When the disc cartridge 200 further moves inward of the cartridge holder 1, the shutter opening / closing pin support member 28 together with the disc cartridge 200 holds the state of FIG.
Moved along 0. Finally, the engaging end 215 provided on the disc cartridge 200 at the position shown in FIG.
Held in.

At the time of ejection, the shutter 209 is closed by the operation reverse to the above operation.

In the state shown in FIGS. 8 and 9, the front side surface of the disk cartridge 200 has the pin 101 inserted into the notch 209d as shown in FIG. 11, so that the spring 213 in the disk cartridge 200 causes the shutter 209 to move.
The force to close the lid by pushing the pin 1 in the direction of arrow C.
It will be stopped at 01.

That is, in the loading state, for example, a shock is applied to the spindle motor or the like, and the disc cartridge 200
When the shutter 209 is closed by the biasing force of the inner spring 213, it is possible to completely prevent the harmful effects such as the destruction of the head 110b and the objective lens 110a that are arranged opposite to each other on the opening windows 207 and 208.

Even when a disc cartridge other than the regular disc cartridge is inserted into the cartridge holder 1, the front portion of the disc cartridge or the shutter contacts the pin 101, and the disc cartridge 20 is further extended.
It becomes impossible to push 0 into the cartridge holder 1. That is, as shown in FIG. 13 of the related art, a rotating piece 47 is mounted on the cartridge holder 1 to prevent the wrong insertion of the disk cartridge.
Further, it is not necessary to attach a component for rotating the pin 48 around the pivot 46 along the guide groove 45, and it is possible to prevent erroneous insertion with one pin or rib, and to prevent the erroneous insertion preventing mechanism from being provided in the cartridge holder. The area to be mounted on the disk 1 can be effectively used, and the disk cartridge drive device can be thinned.

12A and 12B show another structural example of the present invention. FIG. 12A shows the notch 36 of the cassette holder 1.
Bend ribs or pins 101a directed downward are disposed on the. This structure has the same structure as that of Japanese Utility Model Laid-Open No. 3-14760, but in this example, the cartridge holder 1 is rigid to a fixed part such as a chassis and does not descend or rise at the time of loading as in the above-mentioned publication. It is unique in that the dimensions can be accurately determined when determining the length.

In the case of FIG. 12B, the pins 101 and 101a are erected at the position where the cassette holder 1 and the limiting plate 114 described in FIG. 1 face each other, and the distance W ₃ between the pins 101 and 101a at this time is For example, by arranging the cartridge for the 3.5-inch floppy disk to be thinner than the thickness (3.3 mm) of the cartridge, it is possible to prevent erroneous insertion of all similar cartridges.

In FIG. 13, a pin or rib 101b is provided on the fixed portion of the upper lid 118. In this case, a through hole 36a is formed in the corner of the cutout portion 36 of the cartridge holder 1 so that the pin or rib 101b is inside the cartridge holder 1. The length of the pin or the rib 101b is selected so that the disk cartridge can be inserted in the state where the shutter is opened and the shutter is opened.

When the pins or ribs 101a and 101b are hung from the upper side of the disc cartridge 200 as described above, the cutout portion 209d of the shutter 209 is located on the upper half 201 side or above and below as shown by the broken line in FIG. Of course, is selected.

In FIG. 14, a pin or rib 101c is erected or formed on the bottom surface 108b of the chassis 108. The pin or rib 101c is inserted through the through hole 114e formed in the annular portion of the limiting plate 114 to the cartridge holder. 1
It is projected inside. In this example, it is obvious that the engaging protrusions such as the pins or ribs may be formed at the fixing points without being limited to the above.

[0083]

According to the disk cartridge driving device of the present invention, when the disk cartridge is loaded, when the shutter is opened and the lid is about to be closed, the engagement member made of a protrusion such as a rib or a pin is fixed. Since it is provided in the section, it is possible to prevent the slide due to the trouble of the shutter, and it is possible to prevent the damage of the head and the objective lens.
In addition, it is not necessary to provide a cartridge wrong insertion prevention mechanism on the cartridge holder, the number of parts can be reduced, the arrangement area of the wrong insertion prevention mechanism can be effectively used, and the wrong insertion prevention mechanism is not mounted on the cartridge holder. The cartridge driving device can be made thinner. Further, by providing protrusions on the cartridge holder and the limiting plate, it is possible to prevent erroneous insertion of the 3.5 inch floppy disk cartridge.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a main part of a disk cartridge driving device of the present invention.

FIG. 2 is an exploded perspective view (No. 1) of the disk cartridge driving device of the present invention.

FIG. 3 is an exploded perspective view (No. 2) of the disk cartridge driving device of the present invention.

FIG. 4 is an assembled perspective view of a limiting plate used in the disk cartridge driving device of the present invention.

FIG. 5 is an assembled perspective view of the disk cartridge drive device of the present invention.

FIG. 6 is a diagram (1) illustrating a loading operation of the disc cartridge driving device of the present invention.

FIG. 7 is a diagram (2) illustrating a loading operation of the disc cartridge driving device of the present invention.

FIG. 8 is a diagram (3) illustrating a loading operation of the disc cartridge driving device of the present invention.

FIG. 9 is a diagram (4) illustrating a loading operation of the disc cartridge driving device of the present invention.

FIG. 10 is an explanatory diagram (1) of a shutter opening / closing operation of the disc cartridge driving device of the present invention.

FIG. 11 is an explanatory diagram (2) of the shutter opening / closing operation of the disc cartridge driving device of the present invention.

FIG. 12 is another configuration diagram (1) of the disk cartridge driving device of the present invention.

FIG. 13 is another configuration diagram (2) of the disc cartridge driving device of the present invention.

FIG. 14 is another configuration diagram (3) of the disk cartridge driving device of the present invention.

FIG. 15 is a diagram showing a state where a shutter of a conventional disc cartridge is opened.

FIG. 16 is a diagram showing a shutter closed state of a conventional disc cartridge.

FIG. 17 is a perspective view of a conventional disc cartridge holder.

FIG. 18 is an explanatory view of a conventional disc cartridge erroneous insertion prevention mechanism.

[Explanation of symbols]

 1 Cartridge Holder 26 Groove 101 Locking Member (Pin, Rib) 108 Chassis 114 Limiting Plate 118 Upper Lid 200 Disc Cartridge 209 Shutter

Claims (6)

[Claims] 1. A holding means for holding a disc cartridge in which a disc carrier is rotatably pivotally mounted at a fixed position, and a disc carrier surface of the disc cartridge, which is vertically slidably in contact with the disc carrier and which holds the disc carrier. An elevating means on which a drive motor for rotating and driving is mounted, and an engaging pin provided on the holding means engages with a shutter engaging portion of the disk cartridge when the disk cartridge is inserted through the disk cartridge insertion / removal opening of the holding means. In addition, in a disc cartridge driving device configured to open and close the shutter, the shutter of the disc cartridge can be inserted into the holding means when the shutter is opened, and the shutter is closed. When the shutter is closed, it cannot be inserted into the holding means, and the opened shutter is not closed. A disk cartridge drive device, characterized in that an engaging member is provided at a fixed portion of the drive device. 2. The disk cartridge drive device according to claim 1, wherein the engagement member is a pin or a rib that is erected on a fixed portion of the drive device that engages with the shutter of the disk cartridge. 3. The disk cartridge driving device according to claim 1, wherein the fixing portion of the driving device in which the engaging portion is arranged is a spindle motor positioning plate fixed to a chassis. 4. The disk cartridge drive device according to claim 1, wherein the fixed portion of the drive device in which the engagement portion is disposed is a chassis. 5. The disk cartridge drive device according to claim 1, wherein the fixed portion of the drive device in which the engagement portion is disposed is a disk holder. 6. The fixing portion of the drive device, in which the engaging portion is disposed, is a top cover.
The disk cartridge driving device described.