JP3198605B2 - Disc recording and / or playback 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 recording and / or reproducing apparatus using an optical disk such as an optical disk or a magneto-optical disk for recording and / or reproducing information signals and using a light beam as a recording medium. For more information,
The present invention relates to an apparatus provided with an erroneous insertion preventing mechanism that allows only mounting of a disk cartridge containing an optical disk or a magneto-optical disk and prevents mounting of a disk cartridge containing another disk.

[0002]

2. Description of the Related Art Conventionally, as an optical disk using a light beam for recording and / or reproduction of an information signal, an optical disk used only for reproducing an information signal and an information signal once recorded are erased, A magneto-optical disk capable of re-recording an information signal is known.

An optical disk has a reflection layer made of a thin metal film such as aluminum, and the reflection layer is formed on a disk substrate having an uneven pattern formed on the basis of an information signal using a technique such as injection molding. It is formed by applying a thin film on the pattern. The information signal written on this optical disk as a concavo-convex pattern irradiates the reflective layer with a coherent light beam such as a laser beam, and changes in the intensity of the reflected light beam due to interference generated when the light beam is reflected by the reflective layer Is detected, the concavo-convex pattern is determined and read from the optical disc.

On the other hand, a magneto-optical disk has a signal recording layer made of a magnetic thin film capable of perpendicular magnetization formed on a disk substrate having optical transparency. This signal recording layer
The laser beam is heated to a temperature higher than the Curie temperature by irradiation, and the direction of magnetization is reversed by application of an external magnetic field to write an information signal. The information signal written in the signal recording layer irradiates the signal recording layer with a linearly polarized light beam such as a laser beam, and changes the polarization direction due to the so-called Kerr effect that occurs when the light beam is reflected by the signal recording layer. By detecting the change, the difference in the magnetization direction is determined and read.

In order to write and / or read information signals on such an optical disk, an optical pickup device for irradiating the disk with a light beam and a magnetic head device for applying an external magnetic field are used. A disk recording and / or reproducing device configured to have is used. The optical pickup device is disposed on one main surface of the optical disk, that is, opposed to the disk substrate,
The apparatus is configured to irradiate a converged light beam and detect reflected light of the light beam from an optical disk. On the other hand, the magnetic head device is arranged at a position facing the optical pickup with the optical disk therebetween and facing the signal recording layer of the optical disk, and is configured to apply a magnetic field to this signal recording layer. Have been.

In this disk recording and / or reproducing apparatus, an optical disk is held and rotated by a disk rotation drive mechanism, and an optical pickup device and a magnetic head device are moved from the inner circumference to the outer circumference of the optical disk. By being moved radially across the side,
Information signals are written and / or read over the entire recording area of the optical disk.

As an optical disk and a magneto-optical disk used as a recording medium of such a disk recording and / or reproducing apparatus, those having a diameter of about 3.5 inches have been proposed. These optical discs or magneto-optical discs are housed in a cartridge main body for preventing dust from adhering when not in use or contact with fingers and simplifying handling, and are configured as disc cartridges. As shown in FIG. 1, an optical disk cartridge containing such an optical disk has been proposed.

In the following description, optical disks including optical disks and magneto-optical disks are collectively referred to as optical disks.

The optical disk cartridge 2 shown in FIG.
Reference numeral 01 denotes a cartridge main body 203 for rotatably storing the optical disk 202 and a shutter member 211 movably attached to the cartridge main body 203.

The optical disk cartridge 201
In the center of one main surface of the optical disk 202 accommodated in the optical disk 202, a chuck for chucking a disk rotation drive mechanism provided in a disk recording and / or reproducing apparatus in which the optical disk cartridge 201 is mounted is provided. A hub 202a is attached.

The cartridge main body 203 for storing the optical disk 202 is formed in a square shape large enough to store the optical disk 202 having a diameter of 3.5 inches. The side on which the shutter member 211 is attached is 90 mm, the other side orthogonal to this side is 94 mm, and the thickness is 6 mm. The cartridge main body 203 is formed by screwing the pair with the upper half 205 and the lower half 204 abutting each other, or by welding or bonding with ultrasonic waves or the like to integrate the pair.

The lower half 204 of the cartridge body 203 is provided for holding a chucking hub 202a attached to the optical disk 202 and a part of the signal recording portion of the optical disk 202 outwardly over the inner and outer circumferences. A first opening 206 is formed. The first opening 206 is formed as a long hole extending from the front part 209 side of the cartridge body 203 to the center part.

When the optical disk cartridge 201 is mounted on a disk recording and / or reproducing apparatus, the first opening 206 is used to drive the chucking hub 202a to rotate the optical disk 202. And the optical disk 20
The second signal recording unit is exposed to an optical pickup device that irradiates the signal recording unit with a light beam.

On the other hand, the upper half 205 is
4, a second opening (not shown) is provided at a position opposite to the first opening 206 provided in the fourth opening. The second opening is provided at a position closer to the front surface 209 side of the first cartridge main body 203, and the optical disk 202
Is formed in a rectangular shape large enough to expose a part of the other main surface portion to the outside over the radially inner and outer circumferences. The second opening allows the other main surface of the optical disk 202 to face the magnetic head device when the optical disk cartridge 201 is mounted on the disk recording and / or reproducing apparatus.

The front part 2 of the cartridge body 203
The portions corresponding to the first opening 206 and the second opening on the 09 side are provided so that the magnetic head device and the optical pickup device can approach the respective main surface portions of the optical disk 202 and can easily enter. Notches 206a, 210
a is provided. That is, the thickness of the central portion near the front portion 209 of the cartridge body 203 is reduced at the portion corresponding to the first opening 206 and / or the second opening.

The cartridge body 203 has a first
A shutter member 211 for opening and closing the opening 206 and the second opening is movably attached. The shutter member 211 has a first plate portion 212 that closes the first opening portion 206 of the lower half 204, and a second opening portion of the upper half 205 that is disposed to face the first plate portion 212 in parallel. Plate portion 213 for closing the portion, and connecting portion 214 for connecting the base ends of the first and second plate portions 212 and 213 to each other.
And is formed so that the cross section is substantially U-shaped.

The first plate portion 212 is formed in a narrow and long rectangular shape enough to close the first opening portion 206 of the lower half 204. The distal end side of the first plate portion 212 is pressed and supported by a shutter pressing plate 215 attached to the outer surface of the lower half 204, and the first plate portion 212
From the cartridge body 203 is prevented. Further, on the base end side of the first plate portion 212 serving as a connecting portion to the connecting portion 214, a first guide groove 216 formed on the outer surface of the lower half 204 for engaging with the first guide groove 216 is provided. Are formed to bend toward the second plate portion 213 side. On the other hand, the second plate portion 213 is formed in a square shape large enough to close the second opening provided in the upper half 205 of the cartridge body 203.

Then, the first and second plate portions 212, 21
3 is extended from one side end of the connecting portion 214 in the moving direction of the shutter member 211 so that the shutter member moving guide arm 2 is extended.
18 are provided. The shutter member movement guide arm 218 is provided on the front surface 20 of the cartridge body 203.
9, when the shutter member 211 is moved to a position where the first opening 206 and the second opening are opened, the notch 206a is formed. , 210a are formed at the positions where the notches 206a, 210a are formed.
To release.

The shutter member moving guide arm 2
The front end 20 of the cartridge body 203
U-shaped fitting holding portion 21 that fits so as to pinch 9
9 are provided. At the tip of the piece protruding above the lower half 205 of the fitting holding portion 219, a second guide groove 220 formed in parallel with the first guide groove 216 on the outer surface of the lower half 204 is engaged. The engagement piece 221 is bent.

The shutter member 211 holds the front portion 209 of the cartridge body 203 with the fitting holding portion 219, and the first and second engagement pieces 217 and 221 respectively correspond to the first and second guide grooves 216. , 220 so as to be fitted to the cartridge main body 203 to prevent the cartridge main body 203 from coming off, thereby ensuring stable movement.

Further, a part of the connecting portion 214 is provided with a spring engaging piece 222 for engaging one end of a not-shown torsion coil spring disposed in the cartridge body 203. This torsion coil spring is
1 is constantly moved and biased in a direction to close the first opening 206 and the second opening of the upper half 205.
The spring locking piece 222 includes first and second plate portions 212,
213 is bent inward toward the inside of the cartridge main body 203 so that one end of the torsion coil spring is locked at the end thereof.
The other end of the torsion coil spring is connected to the cartridge 20.
3 at the corner of the front side portion.

The shutter member 211 thus configured
Is movable in a direction indicated by an arrow C in FIG. 1 between a position where the first opening 206 and the second opening are closed and a position where these openings are opened.

When the shutter member 211 is moved by an opening means such as a shutter opening pin of a disk recording and / or reproducing apparatus, the shutter opening pin enters the front surface 209 of the cartridge body 203. A cutout 224 is formed to keep the first opening 206 and the second opening in an open state. The notch 224 is formed by the fitting and holding portion 214 of the shutter member 211 when the first opening 206 and the second opening of the upper half 205 are opened.
Is formed in a groove shape at a position facing one side edge.

A pair of insertion guide flanges 201c, 201d and 201e, 201f are provided on both side surfaces 207, 208 of the cartridge body 203 orthogonal to the front surface 209 to which the shutter member 211 is attached.
Are integrally formed to protrude. The insertion guide flanges 201c, 201d and 201e, 201f are arranged along the direction in which the optical disk cartridge 201 is inserted into a disk recording and / or reproducing apparatus, and the cartridge body 2
03 is formed from the front surface 209 side to the rear surface side. In addition, these insertion guide flanges 201c, 201
d, 201e and 201f are formed flush with the upper main surface or the lower main surface of the cartridge body 203, respectively. That is, these insertion guide flanges 201c, 201d and 201e, 201f
Has a length of about 94 mm, a width of 1 mm indicated by arrows t1 and t3 in FIG.
The protrusion amount is 0.5 mm. Then, the pair of insertion guide flanges 201c and 201d that make up each pair.
And 201e, 201f, guide grooves 201a, 201b in both side portions 207, 208 of the cartridge 203.
Are respectively formed. Further, the interval between the pair of insertion guide flanges 201c, 201d and 201e, 201f, that is, the width t2 of each guide groove 201a, 201b.
Are 4 mm each. The cartridge main body 203 is provided with each insertion guide flange 201c, 201.
The width of the shutter member 211 in the moving direction is 90 mm, including the distances d, 201e, and 201f.

When the optical disk cartridge 201 is mounted on a disk recording and / or reproducing apparatus, a pair of positioning pins for positioning the mounting position of the optical disk cartridge 201 in the horizontal direction are engaged with the lower half 204. Pin engagement holes 225 and 226 are provided. Further, an erroneous recording preventing member 227 for indicating whether or not an information signal can be written on the optical disc 202 is attached to the lower half 204 near one of the positioning pin engagement holes 226. Further, a pull-in pin engaging hole 228 is formed near the front of the one side surface portion 207 of the cartridge 203 main body to engage with a pull-in pin provided in a loading mechanism of the disk recording and / or reproducing apparatus.

By the way, as a recording medium for information signals,
Magnetic disks are widely used. This magnetic disk is formed by applying a self-limiting medium to a flexible film-like base member. Since this magnetic disk is also extremely fragile, it is housed in a rigid cartridge body to assure protection of the magnetic disk and simplicity of handling, and is configured as a magnetic disk cartridge. A specific example of this type of magnetic disk cartridge is described in US Pat. No. 4,918,559.

The magnetic disk cartridge disclosed in US Pat. No. 4,918,559 uses the optical disk 2 stored in the optical disk cartridge 201 described above.
As in the case of No. 02, a magnetic disk having a diameter of 3.5 inches is housed.

The magnetic disk cartridge 301 will be specifically described with reference to FIG. The magnetic disk cartridge 301 is the same as the optical disk cartridge 2 described above.
01 has a diameter of 3.
A cartridge main body 303 sufficient to accommodate a 5-inch magnetic disk 302 is provided. Since the cartridge main body 303 is formed to have a size sufficient to accommodate the 3.5-inch magnetic disk 302 having the same diameter as the optical disk 202, the cartridge main body 203 constituting the optical disk cartridge 201 is The shapes are substantially the same. However, the magnetic disk 302
Since the magnetic disk 302 is thinner than the optical disk 202, the thickness of the cartridge main body 303 for storing the optical disk 202 is smaller than that of the cartridge main body 203 for storing the optical disk 202. The thickness T of the cartridge body 303 is approximately 3 mm.

The cartridge body 303 also has
A recording / reproducing opening 310 that exposes the signal recording surface of the magnetic disk 302 to the outside over the inner and outer peripheries is provided, and a shutter member 311 that opens and closes the opening 310 is movably attached. The shutter member 311 includes a plate portion 313 having an opening 318 for opening the recording / reproducing opening 310. Then, the shutter member 311 is moved with respect to the cartridge body 303 to open the opening 310 by moving the opening 318 formed in the plate portion 313 to a position facing the recording / reproducing opening 310. Opening 3 provided in plate 313
The opening 310 is closed by being moved to a position that does not face the recording / reproducing opening 310 at all.

As described above, the optical disk cartridge 201 containing the optical disk 202 having a diameter of 3.5 inches and the magnetic disk cartridge 301 containing the magnetic disk 302 both have the planar dimensions of the cartridge bodies 203 and 303. They are configured to have substantially the same planar shape and different thicknesses.

[0031]

In a disk recording and / or reproducing apparatus using the optical disk cartridge 201 as a recording medium, a cartridge insertion / removal opening is provided in the apparatus main body, and the cartridge is inserted into the apparatus main body through the cartridge insertion / removal opening. One configured to insert and remove the optical disk cartridge 201 has been proposed. Then, the optical disc cartridge 201 inserted and removed through the cartridge insertion / removal opening is loaded into a disc mounting portion in the device main body by a loading mechanism provided in the device main body, and unloading operation from the cartridge mounting portion is performed. Done.

The cartridge insertion / removal opening is formed in such a size that the optical disk cartridge 201 can be inserted.
The shutter member 211 has a width substantially equal to the width of the side in the example where the shutter member 211 is attached, and is formed to have a height substantially equal to the thickness of the optical disc cartridge 201. Therefore, the optical disc cartridge 2
01, it is also possible to insert the above-described magnetic disk cartridge 301 having the same plane size as the optical disk cartridge 201 and differing only in the thickness.

In the disk recording and / or reproducing apparatus using the optical disk cartridge 201, the loading mechanism operates even when the magnetic disk cartridge 301 is inserted. This loading mechanism
Since the configuration is such that the optical disk cartridge 201 that is thicker than the magnetic disk cartridge 301 is loaded, the magnetic disk cartridge 30 that is thinner
When the disc 1 is inserted, the disc 1 is caught by a mechanism constituting the loading mechanism or a mechanism guiding the transport direction by the loading mechanism, and cannot be taken out from the disc recording and / or reproducing apparatus. The magnetic disk cartridge 301 and the loading mechanism are damaged. Further, there is a possibility that the magnetic disk 302 in the magnetic disk cartridge 301 or the recording and / or reproducing means of the information signal such as the optical pickup device or the magnetic head device provided in the apparatus main body may be damaged.

Accordingly, the present invention provides a mechanism for allowing only the corresponding optical disk cartridge to be inserted and withdrawn, reliably prohibiting the insertion of other disk cartridges such as magnetic disk cartridges, and carrying the optical disk cartridge such as a loading mechanism. This has been proposed for the purpose of providing a disk recording and / or reproducing apparatus capable of protecting the optical pickup device, the magnetic head device, and the like while protecting the recording and reproducing sections.

[0035]

According to the present invention, at least one side of a cartridge body containing a first disk in an insertion direction of the cartridge body into the apparatus body is provided in order to achieve the above object. A first disk cartridge provided with an insertion guide portion, and a second disk having the same diameter as the first disk are housed therein. Of the second disk cartridge thinner than the thickness of the first disk cartridge, In a disk recording and / or reproducing apparatus capable of mounting only the first disk cartridge, loading means for loading the first disk cartridge into a disk mounting portion;
The first disk cartridge has a width smaller than the thickness of the first disk cartridge, and when the first disk cartridge is inserted into the loading means through the entrance, the insertion guide portion provided in the first disk cartridge is inserted. Erroneous insertion prevention means having a slit portion for allowing insertion into the loading means, wherein the width of the entrance portion excluding the slit portion is set to be smaller than the width of the second disk cartridge. ing.

[0036]

In the disk recording and / or reproducing apparatus according to the present invention, the first disk cartridge inserted into the apparatus main body has the insertion guide section of the first disk cartridge inserted into the slit section of the erroneous insertion prevention means. Accordingly, the loading operation is performed on the disk mounting portion by the loading mechanism, and the second disk cartridge thinner than the first disk cartridge has a width of the entrance portion excluding the slit portion of the erroneous insertion prevention means that is equal to that of the second disk cartridge. By being set to be smaller than the width, insertion into the apparatus main body is prevented.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of a disk recording and / or reproducing apparatus according to the present invention will be described below with reference to the drawings.
The disk recording and / or reproducing apparatus according to the present invention has a mechanism and means for mounting the optical disk cartridge 201 and recording and / or reproducing information signals on the optical disk 202 in the optical disk cartridge 201. I have. That is, in this disk recording and / or reproducing apparatus, a disk loading mechanism 3 for mounting an optical disk cartridge 201 on the disk mounting section 1 and mounting an optical disk 202 on a disk table of the disk rotation driving mechanism 2, and a rotational drive by the disk table. An optical pickup device 4 which is radially transferred over the inner and outer circumferences of the optical disc 202 to record and / or reproduce information signals on the optical disc 202;
A magnetic head device 5 for applying an external magnetic field while irradiating the optical disk 202 with a light beam when recording an information signal on the optical disk 202 is provided.

As shown in FIGS. 3 to 5, a disk mounting portion 1 on which the optical disk cartridge 201 is mounted is a chassis substrate on which a mechanism such as a disk rotation drive device 2 and a transfer mechanism of an optical pickup device 4 are disposed. And 6. That is, in the disc mounting section 1, the optical disc cartridge 201 is mounted on the upper surface side of the chassis substrate 6. The disc mounting portion 1 has positioning pin engaging holes 225, 2 provided in the optical disc cartridge 201.
Positioning pins 7 and 8 that engage with 26 are erected.
When the optical disk cartridge 201 is mounted on the disk mounting portion 1, the disk cartridge positioning pins 7, 8 are engaged with the positioning pin engagement holes 225, 226, and are positioned at a predetermined mounting position with respect to the disk mounting portion 1. It is mounted on the disk mounting unit 1 in this state. Also,
The disc mounting unit 1 includes an optical disc cartridge 2
The optical disc cartridge 201 is provided with height reference pins 7a and 8a for keeping the optical disc cartridge 201 at a predetermined height with respect to the chassis substrate 6 in contact with the chassis substrate 6.

The optical disc 202 of the optical disc cartridge 201 to be mounted on the disc mounting section 1 is provided substantially at the center of the chassis substrate 6 constituting the disc mounting section 1.
A disk rotation drive mechanism 2 for rotating the disk drive is provided. The disk rotation drive mechanism 2 has a drive motor 9 attached to the lower surface of the chassis 6 and having a drive shaft serving as a spindle shaft 10 protruding from the upper surface of the chassis 6. An optical disk 202 is provided at the tip end of the spindle shaft 10.
Is mounted integrally with the spindle shaft. The disk table 11 is provided with a disk attracting magnet 12 for holding the chucking hub 202a of the optical disk 202 by magnetic attraction.

An optical pickup device 4 is provided on the chassis substrate 6. The optical pickup device 4 includes an objective lens 13 that condenses a light beam from a light source on a signal recording unit so as to face a signal recording surface of an optical disk 202 mounted on a disk table 11. That is, the optical pickup device 4 is supported by a pair of feed guide shafts 15 and 16 which are bridged in a mounting hole 14 opened substantially in the center of the chassis substrate 6. The optical pickup device 4 supported in this manner is provided with feed guide shafts 15 and 1 by a so-called linear motor device including a pair of magnets 17 and 18 and a drive coil 19 provided in the mounting hole 14.
6 is transferred in the radial direction of the optical disk 202.

The optical pickup device 4 is connected to a magnetic head device 5 which is conveyed in the radial direction of the optical disk 202 over the inner and outer circumferences of the optical disk 202 in synchronization with the optical pickup device 4. As shown in FIG. 9, the magnetic head device 5 has a magnetic head 20 having a magnetic field generating coil for applying a vertical magnetic field of a predetermined intensity to a signal recording section of the optical disk 202. The magnetic head 20 is mounted on a magnetic head moving member 21 movably mounted on a magnetic head elevating member of a magnetic head device vertical movement mechanism described later.

The magnetic head moving member 21 is provided with a distance sensor (not shown) for keeping a constant distance between the magnetic head 20 and the optical disk 202. As shown in FIG. 5, the magnetic head moving member 21 is provided with a pair of connecting members 21a and 21b hanging down from the optical pickup device 4, and the lower ends of the connecting members 21a and 21b are connected to the optical pickup device. 4. Therefore, the magnetic head moving member 21 is radially transferred over the inner and outer circumferences of the optical disk 202 in synchronization with the optical pickup device 4, and always moves the magnetic head 20 via the optical disk 202 to the objective lens of the optical pickup device 4. 13.

The magnetic head device 5 having the above-described configuration allows the magnetic head vertical movement mechanism 22 to move the optical disk 2 substantially perpendicular to the main surface of the optical disk 202.
02 is moved in the direction of approaching / separating from 02. A magnetic head vertical movement mechanism 22 for moving and operating the magnetic head device includes:
Magnetic head moving member 21 provided with magnetic head 20
And a magnetic head lifting / lowering lever 24 for operating the magnetic head lifting / lowering member 23 in a direction substantially perpendicular to the main surface of the optical disc 202.

The magnetic head elevating member 23 has a pair of elevating shafts 25 and 2 erected on the chassis substrate 6 at positions not in contact with the optical disk cartridge 201.
6, it is movably supported in the up and down direction, that is, in the direction in which the chassis substrate 6 moves in the direction of arrow D in FIG. On the side of the magnetic head elevating member 23 opposed to the optical pickup device 4, a pair of supporting members are set so that the axial direction is parallel to the main surface of the optical disk 202 and the axial direction is along the radial direction of the optical disk 202. Shaft 2
7, 28 are attached. These support shafts 2
The magnetic head moving member 21 is attached to the members 7 and 28 so as to be movable in the axial direction of the support shafts 27 and 28 in the direction of arrow E in FIG.

At a position near one of the elevating shafts 26 of the magnetic head elevating frame member 23, a magnetic head elevating vertical movement lever 24 for moving the magnetic head elevating member 23 up and down is engaged. A mating pin 29 is provided. The engagement pin 29 is attached to the distal end side of an engagement pin attachment member 30 provided so as to hang down from one side surface of the magnetic head elevating member 23.

The vertical movement lever 24 for vertically moving the magnetic head lifting / lowering 23 by engaging with the engaging pin 29 moves the magnetic head lifting / lowering lever 24 at a position corresponding to the engaging pin 29 about the support shaft 31. , In the direction of arrow F in FIG.
It is mounted on a chassis substrate 6. The vertical moving lever 24 for lifting and lowering the magnetic head includes a fan-shaped sliding contact portion 32 which is moved in sliding contact with the chassis substrate 6, and a vertical moving guide portion 33 which stands up from the sliding contact portion 32. . The sliding contact portion 32 is provided with minute projections 32 a for facilitating sliding with respect to the chassis substrate 6, and the sliding contact portion 32 is configured to make point contact with the chassis substrate 6. In the sliding contact portion 32, a lever operation pin 34 which is fitted into an operation member for operating a vertically moving lever for raising and lowering a magnetic head provided on an eject plate of the disk loading mechanism 3 described later is implanted.

The vertical movement guide portion 33 is configured such that the upper end of the rising wall is engaged with the engagement pin 29, and the parallel portion 33a parallel to the chassis substrate 6 is slid from the parallel portion 33a. And an inclined portion 33b inclined toward the portion 32. That is, in the ejected state, as shown in FIG. 9, since the engaging pin 29 is engaged with the parallel portion 33a, the magnetic head elevating member 23 is at a position separated from the optical disk 202 and at least in the optical disk cartridge. The magnetic head 20 is held at a position where it does not come into contact with the optical disc cartridge 201 when the cartridge 201 is inserted. On the other hand, in the loading state in which the engagement pin 29 is engaged with the lower end of the inclined portion 33b, as shown in FIG. 8, since the engagement pin 29 is engaged with the lower end of the inclined portion 33b, The magnetic head elevating member 23 is located at a position close to the optical disk 202, and holds the magnetic head 20 at a height position at which a magnetic field can be applied to the signal recording layer of the optical disk 202.

Accordingly, the magnetic head moving member 21 can be mounted on the magnetic head elevating member 23 so as to be transferable and can be moved in the radial direction over the inner and outer circumferences of the optical disk 202. The rotation of the magnetic head elevating vertical movement lever 24 causes the engagement pin 29 provided on the magnetic head elevating frame member 23 to slide between the parallel portion 33a and the inclined portion 33b, thereby recording a signal on the optical disk 202. The moving operation is performed between positions close to and away from the optical disk 202, which is an operation of approaching and separating in a direction substantially perpendicular to the surface.

When the magnetic head elevating frame member 23 moves the magnetic head moving member 21 to a position close to the optical disc 202, the magnetic head elevating frame member 23 moves to a position near the other elevating shaft 25 of the magnetic head elevating member 23. Further, an engagement surface 23a is provided for engaging the magnetic head elevating member 23 at a position close to the optical disk 202, which engages with a magnetic head holding mechanism described later. This engagement surface 23a
Is formed as an inclined surface inclined toward the chassis substrate 6 on the side opposite to the side on which the magnetic head moving member 21 is provided.

On the other hand, as shown in FIGS. 3 to 8, the disk loading mechanism 3 for loading the optical disk cartridge 201 into the disk mounting section 1 is inserted with the optical disk cartridge 201 mounted on the disk recording and / or reproducing apparatus. A cartridge holder 35 to be held, a cartridge holder support plate 36 for supporting the cartridge holder 35, and an eject plate 37 for moving the cartridge holder 35 up and down with respect to the disc mounting unit 1 and moving the cartridge holder 35 to an eject position for discharging the optical disc cartridge 201. And an eject plate drive mechanism 38 for moving the eject plate 37.

As shown in FIGS. 7, 11 and 12, the cartridge holder 35 is formed by bending a plate-like member.
The optical disk cartridge 201 is formed in a thin housing shape having a space in which the optical disk cartridge 201 inserted from the direction is inserted and held. That is, the cartridge insertion / removal opening serving as an entrance when the optical disk cartridge 201 is inserted into the cartridge holder 35 has a width of 6.5 mm and a length of 90.5 mm. On both sides of the cartridge holder 35 opposed to each other, cartridge holding portions 39 and 40 having a substantially U-shaped cross section for holding the disk cartridge 201 are formed. The cartridge holders 39 and 40 are provided with a pair of vertically movable guide pins 41, 42 and 43 and 44 projecting outward from the outer surfaces of the cartridge holders 39 and 40 so that a part of the outer surface protrudes outward. Is provided. Note that these vertical guide pins 4
The reference numerals 1, 42, 43, and 44 are adapted to be inserted and engaged with vertically movable guide grooves provided in a holder support plate 36 and an eject plate 37, which will be described later.

FIG. 16 shows a portion of each of the cartridge holding portions 39 and 40 facing the inside of the cartridge holder 35.
As shown in the figure, a pair of erroneous insertion preventing members 35a, 35b
Are arranged. These erroneous insertion preventing members 35a, 35
b is a member formed in a thin rod shape, and its longitudinal direction is the direction of the operation of inserting the optical disk cartridge 201 toward the rear side from the front side of the cartridge holder 35. It is attached to the approximate center in the width direction. Each of the erroneous insertion preventing members 35a and 35b has a width of 3.5 mm and a thickness of 0.5 mm. Accordingly, the cartridge insertion slot portion is inlet to the interior of the cartridge holder 35, in the both side portion of each erroneous insertion preventing member 35a, 35b are provided, as shown in FIG. 16 the arrows S ₁ and the arrow S ₂ In addition, it is divided into two slit portions having a width in the height direction of 1.5 mm. Accordingly, the cartridge insertion slot portion, a slit portion shown in FIG. 16 the arrows S ₁ and the arrow S ₂ is narrower than the second cartridge 203 constituting the thickness 3 mm. The length of the cartridge insertion slit in the width direction is the distance between the erroneous insertion preventing members 35a and 35b at the center, that is, 89 mm. Therefore, the cartridge insertion slit is narrower in the width direction than the second cartridge 203 having a length of 90 mm.

A shutter release lever 47 is rotatably attached to the upper plate portion 45 of the cartridge holder 35. The shutter release lever 47 is provided with a shutter release pin 46 that slides with respect to the front surface 209 of the optical disk cartridge 201 inserted into the cartridge holder 35 to open the shutter member 211.

The shutter opening lever 47 is formed in a substantially L-shape, and its base end is rotatably supported by a first support shaft 48 at a substantially central portion of the upper surface portion 45a of the upper plate portion 45. Have been. At the tip end of the shutter opening lever 47, a shutter opening pin 46 for opening the shutter member 211 is provided substantially perpendicular to the surface of the shutter opening lever 47. The shutter release pin 46 is inserted into and engaged with a shutter release pin guide groove 49 provided on the upper plate portion 45 along a movement trajectory of the shutter release pin 46 about the first support shaft 48 so as to be engaged with the cartridge holder. 3
5 is suspended.

The opening pin guide groove 49 has a groove width slightly larger than the outer diameter of the shutter opening pin 46 in order to facilitate movement of the shutter opening pin 46. .

At the base end of the shutter release pin 46, there is provided an open pin escape prevention member 50 which is an open pin lift prevention means for preventing the shutter member 211 from running on the shutter member 211. The release pin escape prevention member 50 is formed of an annular so-called washer large enough to straddle the shutter release pin guide groove 49, and is provided so as to be inserted into the shutter release pin 46.
It is provided in contact with the inner surface part 45b of the upper plate part 45. As a result, the position of the shutter release pin 46 with respect to the release pin guide groove 49 is regulated by the release pin escape prevention member 50, and the inside of the release pin guide groove 49 is pushed out of the cartridge holder 35. It is possible to move without. Therefore, the shutter release pin 46 is reliably slid on the front surface portion 209 of the first cartridge 203, and opens the shutter member 211 without running on the shutter member 211.

[0057]

The shutter release lever 47 rotatably mounted in this way is moved by the first tension coil spring 51 to the shutter release pin 4 in the direction of arrow G in FIG.
6 is urged to rotate in a direction for moving the optical disc cartridge 6 toward the insertion / removal opening side of the optical disc cartridge 201. That is, as shown in FIG. 11, the first tension coil spring 51 is locked by a first spring locking piece 52 formed by cutting and raising a part of the shutter opening lever 47 at one end, and The shutter opening pin 46 is positioned at an initial position, which is the start end position of the shutter opening pin guide groove 49, by locking the side of the shutter opening pin 46 to a third support shaft 68 provided on a later-described retraction operation lever 57.

Further, when the optical disk cartridge 201 is inserted into the cartridge holder 35, the optical disk cartridge 201 manually inserted to a predetermined position in the cartridge holder 35 is provided on the upper plate portion 45 of the cartridge holder 35. A loading mechanism 53 for a disk cartridge for automatically pulling the disc cartridge into the loading position is provided. This retraction mechanism 53
A pull-in member 55 provided with a pull-in pin 54 that is inserted and engaged with a pull-in pin fitting hole 228 provided in the optical disk cartridge 201, a pull-in lever 56 that rotatably supports the pull-in member 55, An operating lever 57 for operating the lever 56 forward and backward.

The retracting lever 56 engages with a pair of guide shafts 61 and 62 implanted on the upper surface 45a of the upper plate portion 45 of the cartridge holder 35, and as shown by an arrow I in FIG. The cartridge 201 is attached to the upper plate portion 45 so as to be movable in the direction along the insertion / removal operation direction with respect to the cartridge holder 35. That is, at the positions corresponding to the respective guide shafts 61, 62 of the retracting member 55, elongated hole-like advance / retreat operation guide grooves 63, 64 are provided, respectively.
1 and 62 are inserted and engaged, so that the retraction lever 5
6 is supported by the retraction member 55. A first torsion coil spring 59, which will be described later, is provided near one end of the retracting lever 56, which is on the rear side of the cartridge holder 35.
A third spring engaging piece 65 with which the other end of the second shaft engages is formed by cutting and raising a part thereof, and the second support shaft 5
8 is formed with a mounting hole 66. On the other end of the retraction lever 56, which is the front side of the cartridge holder 35, there is provided an engagement hole 67 with which the retraction operation engaging pin 69 of the retraction operation lever 57 for reciprocating the retraction lever 56 is engaged. Is provided.

The pull-in member 55 is bent in a substantially U-shape, and one end on the upper side is supported by the pull-in lever 56, and the other end on the lower side is inserted toward the insertion opening of the optical disk cartridge 201. It has a substantially L-shaped extending portion 55a that extends. The retraction member 55 is rotatably attached at one end to one end of the retraction lever 56 via a second support shaft 58. The second support shaft 58 has the first
The torsion coil spring 59 is attached. This first
The torsion coil spring 59 urges the retracting pin 54 to rotate toward the outer surface of the cartridge holding portion 40 of the cartridge holder 35 indicated by the arrow H in FIG. That is, the first torsion coil spring 59 is configured such that one end thereof is connected to the retraction member 5.
5 is locked by a second spring locking piece 60 formed by cutting and raising a part, and the other end side is locked by a third spring locking piece 65 of the pull-in lever 56. The distal end of the extending portion 55a is formed so as to protrude toward the outer surface of the cartridge holding portion 40 of the cartridge holder 35, and the retracting pin 54 is erected. The retracting pin 54 is urged by a first torsion coil spring 59 to move toward the outer surface of the cartridge holder 40 of the cartridge holder 35.

The retracting operation lever 57 is formed as a substantially crescent-shaped flat plate, and a substantially central portion thereof is rotatably supported by a third support shaft 68 on the upper surface portion 45a of the upper plate portion 45 of the cartridge holder 35. Have been. Note that the retracting operation lever 57 is provided on the insertion / removal side of the optical disk cartridge 201 in the vicinity of the shutter release lever 47. At one end of the cartridge retracting operation lever 57, an advance / retreat operation engaging pin 69 that engages with the engaging hole 67 of the retracting lever 56 is erected, and a second tension coil spring 70 is locked. The fourth spring locking piece 71 is formed by cutting and raising a part thereof. On the other hand, the other end of the retraction operation lever 57 is engaged with an eject plate
A pivoting operation engaging piece 72 for pivotally operating the retraction operation lever 57 by the projection 7 is formed in a protruding manner.

The retracting operation lever 57 rotatably mounted in this manner is rotated by the second tension coil spring 70 in the direction of moving the retracting lever 56 in the direction of arrow J in FIG. It is being urged. That is, the second tension coil spring 70 has one end locked to the fourth spring locking piece 71 of the pull-in operation lever 57 and the other end locked to the cartridge holder 35.
The upper plate portion 45 is locked by a fifth spring locking piece 73 formed by cutting and raising a part thereof on the upper surface portion 45a side.

The retraction lever 56 engaged with the retraction operation lever 57 has the retraction pin 54 of the retraction member 55 at a predetermined position in the initial state.

The upper plate 4 of the cartridge holder 35
In a region 5 where the rotation operation engaging piece 72 is moved by the rotation of the retraction operation lever 57, the engaging piece 72 is prevented from falling down into the cartridge holder 35 during the movement. A fall prevention unit 74 is provided. The fall-in prevention portion 74 is formed such that the upper surface portion 45a of the upper surface portion 45 projects upward.

The upper plate 4 of the cartridge holder 35
5, an erroneous insertion preventing lever 75 for preventing the optical disk cartridge 201 inserted into the cartridge holder 35 from being inserted in an incorrect direction is rotatably attached. This erroneous insertion prevention lever 75 is
The base end is supported by a fourth support shaft 76 near one side edge of one of the cartridge holding portions 40 of the cartridge holder 35, and is rotatable on the upper surface portion 45 a of the upper plate portion 45 of the cartridge holder 35. Has been done. An erroneous insertion prevention pin 77 is erected on the tip side of the erroneous insertion prevention lever 75. The erroneous insertion prevention pin 77 is suspended in the cartridge holder 35 via a notch 78 opened on one side of the cartridge holder 35.

The erroneous insertion prevention lever 75 is urged by a third tension coil spring 79 in a direction to move the distal end side of the lever 75 inward of the cartridge holder 35 as shown by an arrow K in FIG. ing. That is, as shown in FIG. 11, the third tension coil spring 79 is locked by a sixth spring locking piece 80 formed by cutting and raising a part of the erroneous insertion prevention lever 75 at one end. The end side is locked by a seventh spring locking piece 81 formed by cutting and raising a part of the upper plate portion 45 of the cartridge holder 35. The mis-insertion prevention lever 7
5 is in contact with a positioning projection 82 projecting from the opening peripheral edge of the notch 78 of the cartridge holder 35 when the third tension coil spring 79 urges the pin 5. Is located at the initial position.

The upper plate 4 of the cartridge holder 35
5, a first notch 83 facing a holding lever for holding an eject plate 37, which will be described later, at the eject position, and a second notch 84 facing the magnetic head device 5 are formed. When the cartridge holder 35 is supported by the holder support plate 36, various shutter release levers 47, retracting operation levers 57, and mis-insertion prevention provided on the upper plate 45 are provided on the upper plate portion 45 of the cartridge holder 35. A bulge 88 is formed to prevent the lever 75 and the like from abutting the holder support plate 36. The bulging portion 88 is provided on one side of the upper plate portion 45 of the holder support plate 36 near the insertion / removal opening of the optical disk cartridge 201 and is at least as a protrusion having a plate thickness of at least various levers, which is orthogonal to the insertion operation direction of the optical disk cartridge 201. It is formed in the direction.

Further, as shown in FIG. 12, the inner surface 45b of the upper plate 45 of the cartridge holder 35 has
By pushing down the optical disk cartridge 201 inserted into the cartridge holder 35 toward the disk table 11, the cartridge push-down member 89 for preventing the shutter release pin 46 from running on the release pin escape prevention member 50 is projected. Is formed. The cartridge press-down member 89 is provided at a position near the shutter release pin 46 at the initial position, and is formed so as to have a projection amount at least equal to or greater than the plate thickness of the release pin escape prevention member 50. Is reliably prevented from getting on the release pin escape prevention member 50.

The upper plate portion 45 of the cartridge holder 35 has a position regulating member 90 for regulating the position so that the optical disk cartridge 201 inserted into the cartridge holder 35 is not inserted further inward than the loading position. , 91 are provided. The position restricting members 90 and 91 are formed in the vicinity of the open end of the second cutout portion 84 along the rear edge of the upper plate portion 45 so as to be bent so as to hang down in the cartridge holder 35. It is provided.

On the outer surface of one of the cartridge holding portions 40 of the cartridge holder 35, a position regulating tongue piece 92 for holding the pull-in pin 54 in the initial state when in the ejected state is bent outward. Is formed. The position restricting tongue piece 92 holds the retracted pin 54 in an ejected state so as to escape outward so as not to come into contact with the optical disc cartridge 201 when inserted into the cartridge holder 35.

As shown in FIG. 4, the cartridge holder support plate 36 for supporting the cartridge holder 35 is formed in a housing large enough to hold the cartridge holder 35 therein. Have support walls 93 and 94 for supporting the cartridge holder 35 in a vertically movable manner. The vertically movable guide pins 41, 42, 43, 44 provided on the cartridge holder 35 are engaged with the support walls 93, 94 in a state where they are inserted.
Alternatively, vertically moving guide grooves 95, 97 and 9 which are slidably engaged.
6,98 are provided. These vertical movement guide grooves 9
Optical disk cartridge 2 among 5,96,97,98
Vertical guide grooves 95, 97 provided on the insertion / removal opening side of No. 01
Is cut out as a slit groove parallel to the spindle shaft 10 of the disk rotation driving device 2 as a width enough to insert the vertical movement guide pins 41 and 43. On the other hand, one of the vertical movement guide grooves 96 and 98 is formed as a wide groove, and is also cut out in parallel with the spindle 10 of the disk rotation driving device 2. The wide vertical guide grooves 96, 98 are provided with inner vertical guide pins 42, 44, respectively.
It is configured so as to slidably engage with one side edge 96a, 98a on the rear side of 98. That is, the vertically moving guide pins 41, 43 on the insertion / removal opening side of the optical disc cartridge 201
Are inserted into and engaged with the vertically moving guide grooves 95 and 97 opposed thereto. It is designed to be engaged.

The vertical movement guide grooves 95, 96, 9
At the lower end sides of the support walls 93, 94 provided with 7, 98, mounting portions 99, 100 and 101, 102 for fixing the holder support plate 36 to the chassis substrate 6 extend inward. It is provided in such a manner. That is, the holder support plate 36 is attached to each of the mounting portions 99, 100, 10
1 and 102 are fixed to the chassis substrate 6 by being screwed to the chassis substrate 6.

The holder support plate 36 has an eject plate 37 to be described later against the urging force of the tension coil spring.
Is held rotatably to hold at the eject position. This holding lever 103
Is rotatable by supporting the base end side thereof with the fifth support shaft 104. And this holding lever 1
An engaging claw 103a that engages with an eject plate locking member provided on the eject plate 37 and holds the eject plate 37 at the eject position is provided on the distal end side of 03. At the base end of the holding lever 103 provided with the engaging claw 103a, a holding lever turning pin 105 for turning the holding lever 103 is planted. The holding lever rotation pin 105 is used for the cartridge holder 3.
5 is suspended in the cartridge holder 35 through a notch 83 opened to one side. Note that the tip of the holding lever rotation pin 105 is connected to at least the optical disc cartridge 2 inserted into the cartridge holder 35.
01 is hung down to a position where it abuts.

The holding lever 103 is turned by the second torsion coil spring 106 in a direction in which the holding lever rotation pin 105 in the direction of arrow L in FIG. It is being urged. That is, the second torsion coil spring 106
Has one end locked to the base end of the holding lever rotation pin 105 and the other end locked to an eighth spring locking piece 107 formed by cutting and raising the holder support plate 36. And
When the engagement between the locking claw 103a and the eject plate locking member is released, the holding lever 103 is provided with a lever rotation preventing piece 103b formed by cutting and raising the holding lever 103. 36, the rotation is restricted.

The holder support plate 36 has a third notch 108 facing the pull-in lever 56, a fourth notch 109 facing the magnetic head device 5, and an eject plate 37, which will be described later, of the optical disc cartridge 201. Sliding pins 113, 114 for sliding in the insertion / removal direction,
115 and 116 are provided.

The eject plate 37 is movably attached to the holder support plate 36 configured as described above. As shown in FIG. 6, the eject plate 37 is provided with a flat slide portion 117 that slides with respect to the holder support plate 36, and is provided on both sides of the slide portion 117 opposite to each other so as to hang down toward the disk rotation driving device 2. And rising walls 118, 119 formed therein. The slide portion 117 is provided with slide grooves 120, 121, 122, 123 into which the slide pins 113, 114, 115, 116 provided on the holder support plate 36 are inserted and engaged, respectively. These slide grooves 120, 121, 12
2, 123 are slide pins 113, 114, 11
5, 116 are formed as slots in the insertion and removal direction of the optical disk cartridge 201.

Further, the slide portion 117 is provided with an eject plate locking member 124 which engages with the holding lever 103 provided on the holder support plate 36. The eject plate locking member 124 is provided with the engaging claw 10 of the holding lever 103.
It is formed as a cylindrical body large enough to be locked to 3a, and is rotatably attached to the slide part 117 by a screw 125 through a perforated hole provided at the center of the cylindrical body.

Further, the slide portion 117 has a fifth cutout portion 126 facing the pull-in lever 56, a sixth cutout portion 127 facing the magnetic head device 5, and a pull-in operation lever provided on the cartridge holder 35. A seventh notch portion 128 is provided for the turning operation engaging piece 72 of 57. And these notches 126, 127,
The magnetic head device 5 is attached to the optical disk 202 so as to protrude into the notch 127 at one side edge 127a on the inner side of the sixth notch 127 into which the disk cartridge 201 is inserted. When the magnetic head device 5 is provided at the adjacent recording position,
A magnetic head holding mechanism 110 that holds the signal recording surface at a predetermined height with respect to the signal recording surface 02 is provided. The magnetic head holding mechanism 110 includes a resiliently displaceable leaf spring 111 having a distal end bent in a substantially U-shape, and a substantially U-shaped top on the distal end is provided on the magnetic head elevating member 23. The magnetic head device 5
Is moved to a recording position close to the optical disk 202, so that the magnetic head elevating member 23 is pressed and held. The leaf spring 111 is fixed to the eject plate 37 by fixing the base end with a screw 112.

Further, one side edge 128a of the seventh cutout portion 128 on the side of the insertion / removal opening of the optical disk cartridge 201 is:
When the eject plate 37 moves to the eject position,
The retraction operation lever 57 is rotated by engaging with the engagement piece 72 protruding into the notch 128.

Then, on the rear side of the seventh notch portion 128 where the optical disk cartridge 201 is inserted, an operating portion through which a slide pin of an eject plate driving mechanism 38 for moving and moving the eject plate 37 to the eject position is inserted. 129 are provided. The operation section 129 is formed as a flat plate-like body having a substantially square planar shape, and is provided on one side edge on the rear side of the slide section 117. In addition,
A pin slide hole 129a into which the slide pin is inserted and engaged is formed as a substantially circular hole in the operation portion 129.

The eject plate drive mechanism 38 provided with a slide pin that is inserted into and engaged with the pin slide hole 129a includes:
As shown in FIG. 4, an ejection motor (not shown) provided below the chassis substrate 6 and an operation gear 131 provided with a slide pin 130 that is driven to rotate by the motor are provided. The ejecting motor and the operation gear 130 are connected to a plurality of coupling gear mechanisms 1 of large and small sizes.
32. And the operation gear 131
The slide pin 130 is erected at the eccentric position. The eject plate drive mechanism 38 is provided when the eject operation button (not shown) is operated to drive the eject motor and rotate the operation gear 131 in a state where the optical disk cartridge 201 is mounted on the disk mounting section 1. , The slide pin 130 is the eject plate 37
The ejecting plate 37 is moved by slidingly engaging with the peripheral edge of the opening of the pin sliding hole 129a.
The eject plate 37 is moved to the eject position by sliding against the urging force of a tension coil spring described later provided between the chassis 7 and the chassis substrate 6. When the eject plate 37 is not at the eject position, the slide pin 130 is rotated to a position where it does not slide on the pin sliding hole 129a.

A rising portion 133 bent upward and a projecting portion 134 behind the rising portion 133 are provided on one side edge of the slide portion 117 on the side of the optical disk cartridge 201 on the insertion / removal opening side.

Then, the cartridge holder 35 is moved up and down with respect to the disc mounting portion 1 and moved to the eject position where the optical disc cartridge 201 is ejected, on the rising walls 118 and 119 provided on the opposite sides of the slide portion 117. Vertical slide groove 1 for
35, 136 and 137, 138 are provided, respectively. These vertical slide grooves 135, 136 and 13
7, 138 are horizontal portions 135a, 136a and 137a, 1 parallel to the insertion / removal direction of the optical disk cartridge 201.
38a and the horizontal portions 135a, 136a and 137.
a, 138a, the first inclined portions 135b, 136b, and 137 that gradually descend and incline toward the rear side.
b, 138b, and second inclined portions 135c, 136c, and 137 that incline further downward toward the rear side.
c, 138c. Vertical slide grooves 135, 136 and 137, 13 formed in this way.
The cartridge holder 35 supported by the chassis substrate 6 with the vertically moving guide pins 41, 42 and 43, 44 inserted through the vertical sliding grooves 135, 136 and 137,
The vertical movement guide pins 41, 42 and 43, 44 are guided by 138 so as to be moved up and down with respect to the axial direction of the spindle shaft 10 of the disk rotation driving device 2, that is, with respect to the disk mounting portion 1, and the optical disk cartridge 201.
Is moved to the eject position where the liquid is discharged.

The rising wall 1 of the eject plate 37
In the vicinity of the vertically movable slide grooves 136 and 138 into which the optical disk cartridges 201 and 118 are inserted, a fourth tension coil spring for constantly urging the eject plate 37 toward the insertion / removal opening side of the disk cartridge 201. 139 are respectively attached. In the figure, one tension coil spring is omitted. One end of each of the tension coil springs 139 rises
The eject plate 37 is always urged toward the insertion / removal side of the disk cartridge 201 by locking the other end to the spring locking pins 140 and 141 set on the chassis substrate 6. It has become.

Further, on the inner side of one of the rising walls 118 of the eject plate 37 where the optical disc cartridge 201 is inserted, the lever of the magnetic head elevating vertical movement lever 24 rotatably supported by the chassis substrate 6 is provided. A lever operation member 142 that fits into the operation pin 34 and rotates the magnetic head lifting / lowering lever 24 is provided. The lever operating member 142 is configured such that one rising edge of one rising wall 118 is closer to the other rising wall 1
It is provided parallel to the slide portion 117 toward the 19th side. In the vicinity of the distal end of the lever operating member 142, an operating pin guide groove 142a into which the lever operating pin 34 is fitted and formed is formed as an elongated groove. The lever operation pin 34 is fitted into and engaged with the operation pin guide groove 142a of the lever operation member 142 formed as described above, and the eject plate 37 is moved, whereby the vertically moving lever 24 for lifting and lowering the magnetic head is rotated. Head lifting member 2
3 is operated in a direction substantially perpendicular to the signal recording surface of the optical disk 202.

Next, the operation of mounting the above-described optical disk cartridge 201 in the disk recording and / or reproducing apparatus configured as described above will be described with reference to FIGS. First, the optical disk cartridge 20
The state before mounting 1 will be described. In order to mount the optical disk cartridge 201, an eject button (not shown) is operated to move the eject plate 37 to the eject position as shown in FIGS. The head raising / lowering member 23 is moved to a raised position separated from the disk table 11 of the disk rotation driving device 2.

That is, by operating an eject button (not shown), the eject plate drive mechanism 38 is driven, and the slide pin 13 of the eject plate drive mechanism 38 is driven.
0 is slidably engaged with the operation portion 129 provided on the eject plate 37, and is extended on the fourth extension coil spring 139 and the retraction operation lever 57 extended between the eject plate 37 and the chassis substrate 6. The ejection plate 37 is moved toward the insertion side of the optical disk cartridge 201 against the urging force of the tension coil spring 70. Then, the holding lever 103 of the holder support plate 36 is engaged with the eject plate locking member 124 provided on the eject plate 37, and the eject plate 37 is held at the eject position.

Further, with the movement of the eject plate 37,
The engaging piece 72 of the retracting operation lever 57 that protrudes into the seventh cutout portion 128 of the eject plate 37 is retracted toward the insertion side of the optical disk cartridge 201. Then, the pull-in lever 56 connected to the pull-in operation lever 57 is slid to the insertion / removal side of the optical disc cartridge 201 in the opposite direction, and the pull-in pin 54 of the pull-in member 55 rotatably supported at the tip end side of the pull-in lever 56.
Is held in contact with the position regulating tongue piece 92 of the cartridge holder 35, and is held at a position where it has escaped outward without contacting the optical disc cartridge 201 inserted into the cartridge holder 35.

The initial position of the shutter release pin 46 is set by a first tension coil spring 51 which is stretched over the shutter release lever 47 and the retraction operation lever 57. On the other hand, the erroneous insertion prevention pin 77 is also set to the initial position in which the erroneous insertion prevention lever 77 hangs down in the cartridge holder 35 by a third tension coil spring 79 stretched between the erroneous insertion prevention lever 75 and the cartridge holder 35.

Further, with the movement of the eject plate 37, the lever operating member 142 provided on the eject plate 37 and the vertical moving lever 24 for raising / lowering the magnetic head engage, and the vertical moving lever 24 for raising / lowering the magnetic head rotates. Then, the magnetic head elevating member 23 is moved to the ascending position separated from the disk table 11 of the disk rotation driving device 2 shown in FIG. At this time, the magnetic head elevating member 23 is
In the loading state, the magnetic head elevating frame member 23 is held at the recording position by urging the engaging surface 23a provided on the magnetic head elevating frame member 23 by the leaf spring 111 provided on the eject plate 37. But
When the eject plate 37 moves rearward, these engagements are released, and the magnetic head lifting / lowering frame member 23 is lifted only against its own weight. Therefore, the load on the motor of the eject plate driving mechanism 38 for raising the magnetic head lifting frame member 23 can be reduced, and a motor with a relatively small output can be used.

When the magnetic head elevating member 23 is raised to the raised position, that is, the eject position,
Vertical movement guide part 3 of magnetic head elevation vertical movement lever 24
The engaging pin 29 provided on the magnetic head elevating member 23 is engaged with the third parallel portion 33b, and the magnetic head 20 does not hit the optical disk cartridge 201 when at least the optical disk cartridge 201 is inserted. Is held in position.

Then, in this state, the optical disc cartridge 201 is inserted into the cartridge holder 35 from the front side with the direction in which the shutter member 211 is attached being the front side. At this time, as shown in FIGS. 19 and 21, one erroneous insertion preventing member 3 is inserted between the insertion guide flanges 201c and 201d on one side of the first cartridge 203.
5a is inserted and the first cartridge 203 is inserted.
The other erroneous insertion preventing member 35b is inserted between the insertion guide flanges 201c and 201d on the other side.

When the optical disk cartridge 201 is inserted into the cartridge holder 35, first, the corner on the tip side of the cartridge 203 comes into contact with the erroneous insertion prevention pin 77 rotatably mounted on the cartridge holder 35. At this time, if the insertion direction of the optical disk cartridge 201 is correct,
01, the erroneous insertion prevention pin 77 is rotated outward in the direction of arrow M in FIG. 17, and the optical disk cartridge 201 is inserted. On the other hand, when the optical disk cartridge 201 is inserted into the cartridge holder 35 with the insertion direction set in an incorrect direction, the insertion is prevented by the erroneous insertion prevention pin 77.

When the disc cartridge 201 is further inserted, the shutter release pin 4 is attached to the front surface 209 of the first cartridge 203 as shown in FIG.
6 contacts. The front portion 20 of the shutter release pin 46
21, the cartridge push-down member 89 protrudingly formed on the upper plate portion 45 of the cartridge holder 35 so as to face the shutter release pin 46 as shown in FIG.
As a result, the optical disk cartridge 201 is pushed down to the disk table 11 side, and comes into contact with the front portion 209 in a state where the optical disk cartridge 201 is prevented from running on the pin escape prevention member 50 provided on the shutter release pin 46.

When the optical disk cartridge 201 is further inserted into the cartridge holder 35 from this state, as shown in FIG. 22, one end of the shutter member 211 contacts the shutter release pin 46, and the shutter member 211 is 22 against the urging force of the torsion coil spring provided in the cartridge 203 of FIG.
The moving operation is performed in a direction in which the 06, 210 is opened. At this time, since the position of the shutter opening pin 46 is regulated with respect to the shutter opening pin guide groove 49 by the pin escape preventing member 50, the shutter member 211 is reliably opened without riding on the shutter member 211.

Then, the optical disk cartridge 2
01 is inserted into the cartridge holder 35, the holding lever 103 rotatably attached to the holder support plate 36.
22 comes into contact with the tip of the optical disk cartridge 201, and the holding lever 103 is turned in the direction of arrow O in FIG.
The engagement with the eject plate locking member 124 provided on the eject plate 37 is released. As a result, the lock of the eject plate 37 is released, and the eject plate 37 is moved to the insertion / removal side of the optical disc cartridge 201 by the fourth tension coil spring 139 stretched between the eject plate 37 and the chassis substrate 6. Is done.

At the same time, one side edge 128a of the cutout portion 128 of the eject plate 37 is
Is released from the engagement piece 72. As a result, the pull-in pin 54 held outside the optical disc cartridge 201 is fitted into the pull-in pin fitting hole 228 provided in the optical disc cartridge 201.
Then, the retracting operation lever 57 is rotated by a second tension coil spring 70 stretched between the retracting operation lever 57 and the cartridge holder 35, and the retracting lever 56 connected to the retracting operation lever 57 is moved to the optical disk cartridge. The user performs a moving operation to the insertion side of 201. As a result, the retraction member 55 provided on the distal end side of the retraction lever 56 is moved by the second tension coil spring 70 provided between the retraction operation lever 57 and the cartridge holder 35 to the optical disc cartridge 201.
Is moved in the insertion direction of the disk cartridge 201 in the direction of arrow P in FIG. As a result, the optical disk cartridge 201 is located on the inner end side of the cartridge holder 35, and the first and second openings 206 and 210 provided in the optical disk cartridge 201 are fully opened.

In the disk recording and / or reproducing apparatus, even if an erroneous operation of inserting the magnetic disk cartridge 301 into the cartridge holder 35 is performed, the erroneous operation is reliably prevented. This is because each of the erroneous insertion preventing members 35a, 35b provided in the cartridge insertion slit portion which is the entrance portion of the cartridge holder 35.
Thereby, the optical disk cartridge 201 can be inserted from the cartridge insertion slit portion, but the magnetic disk cartridge 301 cannot be inserted. That is, the cartridge insertion slit portion is divided into two 1.5 mm wide slit portions on both side portions where the erroneous insertion prevention members 35a and 35b are provided. , 3mm
The insertion of the magnetic disk cartridge 303 having a thickness of 3 mm is prohibited. Further, in the width direction of the cartridge insertion slit portion, since the interval between the erroneous insertion preventing members 35a and 35b is 89 mm as described above,
Cannot be inserted into the magnetic disk cartridge 301 having the width.

Then, with the movement of the eject plate 37, the cartridge holder 35 is moved up and down by the vertically movable slide grooves 135, 136 and 137, 138 provided in the eject plate 37 as shown in FIGS. The guide pins 41, 42 and 43, 44 are guided and lowered in the axial direction of the spindle 10 of the disk rotation drive 2. That is, the vertically moving guide pins 41, 42 and 43, 44 correspond to the vertically sliding grooves 135, 136 and 13.
7 and 138, the vertical sliding groove 13
When the cartridge holder 35 is engaged with the second inclined portions 135c, 136c and 137c, 138c which are inclined downward below the cartridge holder 35, the vertical movement guide grooves 95, 96 provided in the holder support plate 36 and 97,
A steep descent along 98. As a result, the optical disk cartridge 201 is positioned and mounted on the disk mounting section 1. At this time, the optical disc cartridge 201
Are height positioning pins 7 provided on the chassis substrate 6.
The position of the optical disk 202 is regulated and maintained at a predetermined height by the a and 8a and the positioning pins 7 and 8, and the optical disk 202 stored in the disk cartridge 201 is mounted on the disk table 11 to complete the loading operation. I do.

As the eject plate 37 moves, the magnetic head elevating vertical lever operating member 142 provided on the eject plate 37 and the magnetic head elevating vertical lever 24 are engaged to move the magnetic head up and down. The vertical movement lever 24 is rotated, and the magnetic head lifting frame member 23 is moved.
Is lowered in the axial direction of the spindle shaft 10 of the disk rotation drive device 2 as shown in FIGS. When the magnetic head elevating member 23 is lowered,
As shown in FIG. 25, the leaf spring 111 provided on the eject plate 37 is
3a, and presses and biases the magnetic head elevating member 23. As a result, the magnetic head 20 movably supported by the magnetic head elevating frame member 23 faces the opening 210 of the optical disc cartridge 201 and has a predetermined height with respect to the signal recording layer of the optical disc 202 housed in the optical disc cartridge 201. And the optical pickup device 4 is disposed so as to face the optical pickup device 4 so that information signals can be recorded and reproduced.

In the disk recording and / or reproducing apparatus configured as described above, only when the information signal is recorded / reproduced on / from the optical disk 202, the magnetic head is driven by the leaf spring 111 provided on the eject plate 37. Since the lifting frame member 23 is pressed and urged, even when this apparatus is used not only in a state where the optical disk 202 is horizontal with respect to the horizontal plane but also in a state where the optical disk 202 is vertical with respect to the horizontal plane, it is possible to perform magnetic recording and reading at the time of recording and reproduction. The head 20 can be held at a predetermined height position with respect to the optical disk 202.

The disc recording and / or reproducing apparatus according to the present invention is not limited to the above-described embodiment, but may be an insertion guide flange 501e, 501 as shown in FIG.
The optical disk cartridge 501 may be configured to have the cartridge main body 503 having one each on both sides. These insertion guide flanges 50
1e, 501e, like the insertion guide collar portion in the above embodiments, has a thickness of 1mm shown in Fig. 28 arrow t _3. Then, these insertion guide flanges 501e, 5
Numerals 01e are provided substantially at the center in the thickness direction of the cartridge body 503 on the side surfaces, corresponding to the both side surfaces of the cartridge body 503, along the insertion operation direction of the optical disk cartridge. The cartridge of this optical disk is 90 mm wide including the insertion guide flanges 501e, 501e.

A disc recording and / or reproducing apparatus configured to use such an optical disc cartridge has a cartridge holder 3 as shown in FIG.
5, a pair of erroneous insertion prevention members 35
c, 35d, 35e, and 35f are provided. These erroneous insertion prevention members 35c, 35d, 35e, and 35f are formed similarly to the erroneous insertion prevention members in the above-described embodiment. And these erroneous insertion prevention members 35c, 35d,
In 35e and 35f, the width of the cartridge insertion slit in the width direction is 2.5 mm. Therefore, these erroneous insertion preventing member 35c, 35d, 35e, in the both side portion of the cartridge holder 35 35f is disposed, the width S ₃ of the cartridge insertion slot portion, one side end of the erroneous insertion preventing member 35c, 35e An interval between the erroneous insertion preventing members 35d and 35f on the other side and the other side is set, and the interval is 1.5 mm. Further, the erroneous insertion preventing members 35c, 35e on one side and the erroneous insertion preventing members 35d, 3 on the other side are provided.
The interval between 5f is smaller than the width of 90 mm of the magnetic disk cartridge 201 than the erroneous insertion preventing members 35c, 35e, 35.
The width is narrow by d and 35f.

Therefore, each erroneous insertion preventing member 35
Also in the cartridge holder 35 provided with c, 35e, 35d and 35f, the cartridge 301 of the magnetic disk having a thickness of 3 mm and a width of 90 mm is prevented from being erroneously inserted.

Further, the erroneous insertion preventing member is not provided in the cartridge holder 35 as in each of the above-described embodiments.
As shown in FIG. 30 or FIG.
Alternatively, it may be formed at the inner edge of a slit-shaped opening provided corresponding to the entrance of the cartridge holder at the initial position in the outer casing of the reproducing apparatus.

In this example, the outer casing applied to the disk recording and / or reproducing apparatus is, as shown in FIG.
08, a pair of insertion guide flanges 20 provided respectively.
Only the optical disk cartridge in which 1c, 201d, 201c and 201d are integrally formed can be inserted.

That is, erroneous insertion preventing portions 403 and 404 are provided on both sides of the slit-shaped opening portion 402 provided corresponding to the entrance portion of the cartridge holder 35 at the initial position of the outer casing 401, respectively. These erroneous insertion prevention members 403 and 404 are members formed in a protruding shape, respectively, and are attached to substantially the center portions in the width direction of both side walls of the slit opening 402. Since the erroneous insertion preventing members 403 and 404 have a width of 3.5 mm and a protruding amount of 0.5 mm, the slit-shaped opening 402 of the outer housing 401 is formed by the erroneous insertion preventing members 403 and 40.
The arrow S in FIG.
₄ and as indicated by the arrow S _5, the width in the height direction is 1.5m
m is divided into two slit portions. Accordingly, the slit opening 402, the slit portion shown by arrow S ₄ and arrow S ₅ in FIG. 30 is made narrower than the second cartridge 203 constituting the thickness 3 mm. In addition, the length in the width direction of the slit-shaped opening 402 is the distance between the erroneous insertion preventing members 403 and 404 at the center,
That is, since the slit-shaped opening is 89 mm, the second cartridge 203 of 90 mm
It is made narrower also in the width direction.

Therefore, in the disk recording and / or reproducing apparatus, even if an erroneous operation of inserting the magnetic disk cartridge 301 into the cartridge holder 35 is performed, the erroneous operation is prevented. That is, the slit-shaped opening 402 is divided into two slits having a width of 1.5 mm at both side portions where the erroneous insertion preventing members 403 and 404 are provided. Also, the second cartridge 303 having a thickness of 3 mm cannot be inserted. Further, in the width direction of the slit-shaped opening 402, each erroneous insertion preventing member 403,
Since the interval between the 404s is smaller than that of the second cartridge 303 having a width of 90 mm as described above, it cannot be inserted. Therefore, the magnetic disk cartridge 301 is not inserted into the cartridge holder 35 from the slit-shaped opening 402.

Next, as shown in FIG. 31, the outer casing applied to the disc recording and / or reproducing apparatus has first insertion guide flanges 201e, 201e shown in FIG. Only the optical disk cartridge having the cartridge 203 can be inserted.

A pair of erroneous insertion preventing projections 413, 414, 415 are provided at the corners on both sides of the slit opening 412 provided corresponding to the entrance of the cartridge holder 35 at the initial position of the outer housing 411. , 416 are provided. These erroneous insertion prevention projections 413, 414, 415, 4
Reference numeral 16 is formed substantially in the same manner as the erroneous insertion preventing member in the other embodiments described above. The width of the slit-shaped opening 412 in each of the erroneous insertion preventing protrusions 413, 414, 415, 416 is 2.5 mm. Therefore, these erroneous insertion prevention projections 413, 414, 4
15, 416, the slit-shaped opening 4 of the outer housing 411
12, the slit-shaped openings 41
The width S ₆ of the second side is equal to the erroneous insertion preventing members 413 and 415 on one side.
The gap between the erroneous insertion preventing members 414 and 416 on the other side and the other side is 1.5 mm. The distance between the erroneous insertion preventing protrusions 413 and 415 on one side and the erroneous insertion preventing protrusions 414 and 416 on the other side is smaller than the 90 mm width of the magnetic disk cartridge 201. , 416 minutes.

Therefore, as described above, each erroneous insertion preventing projection 41
Outer housing 411 provided with 3,415,414,416
The slit-shaped opening 412 also prevents the second cartridge 303 having a thickness of 3 mm from being erroneously inserted.

[0113]

As described above, the disk recording and / or reproducing apparatus according to the present invention enables only the corresponding optical disk cartridge to be inserted and removed, and prohibits the insertion of other disk cartridges such as magnetic disk cartridges. Therefore, it is possible to protect a mechanism for transporting an optical disk cartridge such as a loading mechanism provided in the apparatus main body, and to further protect an optical pickup device and a magnetic head apparatus provided in the apparatus main body. It is possible to protect the recording and / or reproducing means of the information signal, and further to protect the disk cartridge such as an optical disk cartridge to be inserted / removed and the disk stored in the disk cartridge.

[Brief description of the drawings]

FIG. 1 is a bottom perspective view showing the configuration of an optical disk cartridge mounted on a disk recording and / or reproducing apparatus according to the present invention.

FIG. 2 is a perspective view showing a configuration of a magnetic disk cartridge which is prohibited from being mounted on the disk recording and / or reproducing apparatus according to the present invention.

FIG. 3 is a perspective view showing a configuration of a main part of a disk recording and / or reproducing apparatus according to the present invention.

FIG. 4 is a reduced exploded perspective view showing a main part of the disc recording and / or reproducing apparatus shown in FIG. 3;

FIG. 5 is a perspective view showing a configuration of a disc mounting unit constituting the disc recording and / or reproducing apparatus shown in FIG. 3;

FIG. 6 is a perspective view showing a configuration of a cartridge holder supporting plate constituting the disk recording and / or reproducing apparatus shown in FIG. 3;

FIG. 7 is a perspective view showing a configuration of a cartridge holder constituting the disk recording and / or reproducing apparatus shown in FIG. 3;

FIG. 8 is a perspective view showing a configuration of an eject plate constituting the disk recording and / or reproducing apparatus shown in FIG. 3;

9 is a perspective view showing a state in which a magnetic head device vertical mechanism constituting the disk recording and / or reproducing apparatus shown in FIG. 3 is ejected.

FIG. 10 is a perspective view showing a state of a magnetic head device vertical movement mechanism constituting the disk recording and / or reproducing device shown in FIG. 3 at the time of loading.

11 is an exploded perspective view of the cartridge holder shown in FIG.

12 is a perspective view of a state where the cartridge holder shown in FIG. 7 is viewed from the back side.

13 is a plan view of an essential part of the disc recording and / or reproducing apparatus shown in FIG. 3 in an ejected state.

14 is a right side view of the main part of the disc recording and / or reproducing apparatus shown in FIG. 3 in an ejected state.

15 is a left side view of an essential part of the disc recording and / or reproducing apparatus shown in FIG. 3 in an ejected state.

16 is a front view of an essential part of the disc recording and / or reproducing apparatus shown in FIG. 3 in an ejected state.

FIG. 17 is a plan view showing an engagement state between the optical disk cartridge and an erroneous insertion prevention pin when the optical disk cartridge is attached to the cartridge holder.

FIG. 18 is a plan view showing an engaged state of the optical disc cartridge with a shutter release pin when the optical disc cartridge is mounted on the cartridge holder.

FIG. 19 is a vertical sectional plan view showing a state where a shutter release pin is inserted into the optical disk cartridge shown in FIG. 17;

20 is a longitudinal sectional view showing a state where a shutter release pin is inserted into the optical disk cartridge shown in FIG. 17;

21 is a longitudinal sectional view showing an engagement state of an eject plate holding lever rotation pin with the optical disk cartridge shown in FIG. 17;

FIG. 22 is a plan view showing an open state of a shutter member at a shutter release pin of the optical disk cartridge shown in FIG. 17;

FIG. 23 is a plan view showing a retracted state of the disk cartridge.

24 is a plan view showing a loading state of the disc recording and / or reproducing apparatus shown in FIG. 3;

FIG. 25 is a right side view of the disc recording and / or reproducing apparatus shown in FIG. 3;

FIG. 26 is a left side view of the disc recording and / or reproducing apparatus shown in FIG. 3;

FIG. 27 is a front view of the disc recording and / or reproducing apparatus shown in FIG. 3;

FIG. 28 is a front view showing another example of the configuration of the optical disc cartridge.

FIG. 29 is a front view showing another example of the configuration of the cartridge holder of the disc recording and / or reproducing apparatus.

FIG. 30 is an external perspective view of a disc recording and / or reproducing apparatus according to the present invention housed in an outer casing.

FIG. 31 is an external perspective view showing another example of the disc recording and / or reproducing apparatus according to the present invention housed in an outer casing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc mounting part 35 Cartridge holder 35a, 35b Mis-insertion prevention member 36 Cartridge holder support plate 37 Eject plate 38 Eject plate drive mechanism 201 Optical disc cartridge 201c, 201d Insert guide flange 202 Optical disc 301 Magnetic disc cartridge 302 Magnetic disc

Claims (3)

(57) [Claims] A first disk cartridge provided with at least one insertion guide portion on at least one side in a direction of insertion of a cartridge main body containing a first disk into the apparatus main body; A disk recording and / or reproducing apparatus for accommodating a second disk having the same diameter as the disk and enabling only the first disk cartridge to be mounted in the second disk cartridge thinner than the thickness of the first disk cartridge. Loading means for loading the first disk cartridge into a disk mounting portion, the loading means having a width smaller than the thickness of the second disk cartridge, and allowing the first disk cartridge to pass through an inlet. When inserted into the first disk cartridge, Erroneous insertion prevention means having a slit part through which the inserted insertion guide part is inserted to enable insertion into the loading means, wherein the width of the entrance part excluding the slit part is equal to that of the second disk cartridge. A disk recording and / or reproducing apparatus characterized by being set to be narrower than a width. 2. The disk according to claim 1, wherein the insertion guide portion and the erroneous insertion prevention means are engaged with each other, and one of the insertion guide portion and the erroneous insertion prevention portion is formed in a concave shape, and the other is formed in a convex shape. Recording and / or playback device. 3. The disk recording and / or reproducing apparatus according to claim 1, wherein said erroneous insertion preventing means is formed in a cartridge insertion opening of said apparatus main body.