JP3097695B2 - Disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge on which an information signal is recorded or a disk on which the information signal is recorded is stored.

[0002]

2. Description of the Related Art Conventionally, a disk cartridge 1 accommodating a disk 101 used as a recording medium for information signals.
8 and 9 are used as a disk cartridge mounting device used to mount the 03 on a recording and / or reproducing device.

[0003] A disk cartridge 103 to be mounted by this mounting device is provided with a recording / reproducing opening 104 for allowing a part of the disk 101 to face outward over the inner and outer peripheries of the cartridge main body 102. The recording / reproducing opening 104 is opened and closed by a shutter member 105 movably attached to the cartridge body 102.

A taper portion 102a for detecting erroneous insertion is provided at one corner on the front side of the cartridge body 102. The tapered portion 102a is formed by diagonally notching one corner of the cartridge body 102.

The disk cartridge mounting device has a cartridge holder 107 into which the disk cartridge 103 is inserted and held. The cartridge holder 107 is formed in a substantially housing shape having a size capable of holding the disk cartridge 103 to be inserted, and a shutter member 1 provided on the upper surface side of the disk cartridge 103.
A shutter release lever 108 for opening operation of the shutter 05 is rotatably attached. The cartridge holder 106 has a detection lever 11 for detecting that the disk cartridge 103 is inserted in an incorrect direction.
0 is rotatably mounted.

The shutter opening lever 108 is rotatably supported at its base end at a substantially central portion on the upper surface side of the cartridge holder 107 via a support shaft 108a. The shutter release lever 108 has a shutter release pin 10
8b is planted. The shutter release pin 108b
It projects into the cartridge holder 107 via a slit 109 provided on the upper surface of the cartridge holder 107 along a movement trajectory around the support shaft 108a of the shutter release pin 108b. Shutter release lever 108
Is the arrow e in FIG. 8 by the tension coil spring 108c.
The shutter release pin 108b is positioned at the initial position in a state where the shutter release pin 108b is biased in a direction to move the shutter release pin 108b forward in the cartridge holder 107 on the insertion side of the disk cartridge 103.

The detection lever 110 has a base end rotatably supported on one upper surface of the cartridge holder 107 via a support shaft 110a. This detection lever 11
A detection pin 110b is erected on the front end side of the zero.
The detection pin 110b protrudes into the cartridge holder 107 via a notch 111 provided on one side of the cartridge holder 107. Detection lever 110
Is an arrow f in FIG. 8 by the tension coil spring 110c.
It is positioned at the initial position in a state where it is urged in a direction to move the direction detecting pin 110b inward of the cartridge holder 107.

When the disk cartridge 103 is inserted into the cartridge holder 107 having the above-described configuration with the insertion direction indicated by the arrow a in FIG. 9, the detection pin 110b comes into contact with the tapered portion 102a, and the disk cartridge 103 is further inserted into the cartridge holder. When the detection lever 110 is inserted into the cartridge holder 107, the detection lever 110 is rotated outwardly of the cartridge holder 107 in the direction of arrow d in FIG. Allows for further insertion into the

When the disc cartridge 103 is inserted in the wrong direction into the cartridge holder 107, or when a disc cartridge without the tapered portion 102a is inserted, the detection pin 110b is brought into contact with the front face of the disc cartridge. Since the detection lever 110 is not rotated by the contact, the insertion of the disk cartridge into the cartridge holder 107 is prevented.

When the disk cartridge 103 provided with the tapered portion 102a is correctly inserted into the cartridge holder 107, the shutter release pin 108b is moved to the shutter member 105 on the front side of the disk cartridge 103.
Shutter opening recess 10 provided at a position corresponding to one side of the shutter
2b. In this state, the disk cartridge 1
03 is further inserted into the cartridge holder 107, the shutter release pin 108b is
Shutter release pin guide 10 continuous to the bottom
2c, the shutter release lever 108 is rotated in the direction of arrow b in FIG.
b, the recording / reproducing opening 1 in the direction of arrow c in FIG.
04 is released.

When the disc cartridge 103 is further inserted into the cartridge holder 107, the shutter opening pin 108b is provided with a shutter opening pin engaging recess 102d formed continuously with the shutter opening pin guide portion 102c.
, The shutter member 105 is held at the position where the recording / reproducing opening 104 is opened and is mounted at the mounting completed position in the cartridge holder 107.

The recording and / or reproducing apparatus provided with the disk cartridge mounting apparatus having the above-described structure is provided with a recording / reproducing pickup (not shown) on the disk 101 facing outward through the recording / reproducing opening 104. The devices face each other, and a chucking unit 101a provided at the center of the disk 101 is chucked by a disk rotation drive mechanism provided on the recording and / or reproducing apparatus side.

In this state, the disk rotation drive mechanism drives the disk 101 to rotate, and the pickup device scans the disk 101 to record and reproduce information signals.

[0014]

By the way, as a disk cartridge, a disk cartridge containing various disks having different recording densities and recording capacities is used.
In a recording and / or reproducing apparatus to which a disk cartridge storing a disk is mounted, a recording and / or reproducing method according to the type of the disk stored in the disk cartridge is adopted.

Therefore, a disk cartridge mounting device used for mounting a disk cartridge on a recording and / or reproducing apparatus identifies an identification portion provided on the disk cartridge in accordance with the type of a disk to be stored, and is inserted. Whether or not the disc cartridge can be mounted on a recording and / or reproducing apparatus is identified.

As an identification unit corresponding to the type of the stored disk, for example, the thickness of the disk cartridge is changed according to the type of the stored disk. In addition, the position of the tapered portion for erroneous insertion detection is changed according to the type of the disc.

If it is attempted to identify the type of the stored disk by changing the shape of the disk cartridge,
It is difficult to support various types of disks. That is, the thickness of the disk cartridge needs to be appropriate in accordance with the thickness of the disk to be stored, and various thicknesses cannot be adopted. If the thickness of the disc cartridge does not correspond to the thickness of the accommodated disc, it may be difficult to record and / or reproduce information signals on the disc, or the disc may not be able to rotate smoothly in the disc cartridge. is there. In addition, there are only two taper portions for detecting erroneous insertion at the two corners on the front side of the disk cartridge, which are the insertion ends to the disk cartridge mounting device.

If the shape of the disk cartridge is changed depending on the type of the disk to be stored, it is necessary to change the configuration of the disk cartridge mounting device and the recording and / or reproducing device according to the shape of the disk cartridge. Manufacturing becomes complicated.

Therefore, the present invention makes it possible to distinguish a conventional disk cartridge from a conventional disk cartridge without greatly changing its form, and to mount the disk cartridge on a recording and / or reproducing apparatus using only the conventional disk cartridge. A recording and / or reproducing apparatus which can be used together with a conventional disk cartridge while controlling the size of the disk cartridge is proposed for the purpose of providing a disk cartridge which can be selectively mounted together with the conventional disk cartridge. It is.

[0020]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention proposes a tapered portion in which a disk is rotatably housed and which is formed at a corner on the front side for preventing erroneous insertion. The second disk cartridge has a size substantially equal to that of the first disk cartridge having a groove, and has a groove portion for detecting an erroneous insertion corresponding to the tapered portion. The second disk cartridge has an engaging portion protruding in the vicinity of the groove, and when the second disk cartridge is inserted into a first recording and / or reproducing apparatus using only the first disk cartridge. A first erroneous insertion detection member provided in the device is engaged with the engagement portion to prevent insertion into the device, and a second erroneous detection device using both the first and second disk cartridges is used. When it is inserted into the recording and / or reproducing apparatus, the second erroneous insertion detecting member provided on the apparatus engages with the above-mentioned groove so that it can be mounted in the apparatus.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a disk cartridge according to the present invention will be described with reference to the drawings.

First, the disk cartridge 2 according to the present invention, that is, the second disk cartridge and the above-mentioned conventional disk cartridge 103, that is, a cartridge that allows the first disk cartridge to be selectively mounted on a recording and / or reproducing apparatus. As shown in FIG. 1, the cartridge mounting device is a disk cartridge 2 according to the present invention or a conventional disk cartridge containing a disk 1 such as an optical disk or a magneto-optical disk on which an information signal is recorded or recorded in advance. Disk cartridge 1
03 is a device for selectively mounting a disc cartridge 2 or 103 on a recording and / or reproducing device.
And a cartridge holder 20 into which the cartridge holder 20 is inserted and held.

Here, the disc cartridge 2 according to the present invention will be specifically described. The disc cartridge 2 according to the present invention has a rectangular cartridge body 2c formed by butt-joining an upper half 2a and a lower half 2b.
The disk 1 is rotatably housed therein. Disk 1 rotatably stored in cartridge body 2c
Has a signal recording surface provided with a signal recording layer on one or both sides, and a chucking hub portion 1a for chucking a disk rotation drive mechanism provided on the recording and / or reproducing apparatus side is provided at a central portion. I have.

As shown in FIGS. 1 and 6, the upper half 2a constituting the upper surface of the disk cartridge 2 and the lower half 2b constituting the lower surface of the disk cartridge 2 have a part of the disk 1 on the inner and outer circumferences. The recording / reproducing openings 3a and 3b facing outward are provided to face each other. The recording / reproducing openings 3a and 3b are provided on the front side of the disk cartridge 2, that is, on the insertion end side of the disk cartridge mounting device.

In the center of the lower surface of the disk cartridge 2, there is provided a chucking opening 3c for allowing the chucking hub 1a to face outward.

A shutter member 4 for opening and closing the recording and reproducing openings 3a and 3b is movably attached to the cartridge body 2c. The shutter member 4 is formed, for example, by using a metal plate or a synthetic resin.
Is formed in a substantially U-shape so that the front side thereof can be sandwiched from above and below. That is, the shutter member 4 includes an upper plate portion 4a extending on the upper surface side of the cartridge body 2c, a lower plate portion 4b extending on the lower surface side of the cartridge body 2c, and the upper plate portion 4a and the lower plate portion. 4b. The shutter member 4 allows the front plate 4c to extend along the front surface of the cartridge 2 with respect to the cartridge body 2c, and the recording / reproducing opening 3 along the front surface.
a, 3b are movably mounted in the opening and closing directions.

The shutter member 4 has a recording / reproducing opening 3 on the upper plate 4a and the lower plate 4b.
Upper openings 5a and 5b are provided to open the recording / reproducing openings 3a and 3b when they are moved in the direction to open the openings a and 3b. This shutter member 4 is
A torsion coil spring 6 disposed in the cartridge main body 2c so as not to abut against the disk 1 urges the cartridge 1 in one direction indicated by an arrow B in FIG. The torsion coil spring 6 causes the distal end of one arm 6a to face outward through a slit 7 provided on the front side of the cartridge body 2, and the distal end of the one arm 6a faces forward. It is engaged with an engaging piece 8 provided on the face plate portion 4c.
Therefore, when the disk cartridge 2 is not in use, the recording / reproducing openings 3a and 3b are closed by the shutter member 4 to prevent dust and fingers from entering the cartridge body 2c.

The portion corresponding to the movement trajectory of the shutter member 4 from the front surface to the upper and lower surfaces of the cartridge body 2c substantially corresponds to the thickness of the shutter member 4 by making the upper and lower halves 2a and 2b thinner. A step portion 9 having a depth to be formed is formed. Therefore, the shutter member 4
Are substantially flush with the upper and lower surfaces of the disk cartridge 2.

When the shutter member 4 closes the recording / reproducing openings 3a, 3b on the front surface of the cartridge body 2c, the shutter opening operation is carried out corresponding to one side of the front plate portion 4c. A recess 10 is provided. On one side of the front plate portion 4c, the shutter member 4 is connected to each of the recording / reproducing openings 3.
When a and 3b are closed, they face the inside of the shutter opening operation concave portion 10. Shutter opening recess 1
Reference numeral 0 indicates that when the disk cartridge 2 is inserted into the disk cartridge mounting device, the shutter opening member provided on the disk cartridge mounting device enters.

One side of the front surface of the cartridge body 2c is formed as a shutter opening member guide 11 which is continuous with the bottom of the shutter opening operation concave portion 10. The shutter opening member guide section 11 is for guiding the movement of the shutter opening member that has entered the shutter opening operation concave portion 10.

A shutter opening member engaging portion 12 is provided on the side of the shutter opening member guide portion 11 opposite to the side of the shutter opening operation concave portion 10, that is, substantially at the center of the front surface of the cartridge body 2c. . The shutter opening member engaging portion 12 is configured such that the shutter member 4
The shutter members 4 are covered when the positions a and 3b are closed. When the shutter member 4 is moved to a position where the recording / reproducing openings 3a and 3b are opened, the shutter opening member engaging portion 12 faces outward and engages with the shutter opening member. The disk cartridge 2 is in a state of being mounted at the mounting completed position in the recording and / or reproducing apparatus when the shutter opening member is engaged with the shutter opening member engaging portion 12.

A tapered portion is provided at the other corner of the front surface of the cartridge body 2c. As shown in FIG. 6, the upper half 2a and the lower half 2b are located at the corners where the tapered portion is provided so as to sandwich the tapered portion from above and below.
A first protruding piece 13a and a second protruding piece 13b are provided at a predetermined interval from the first protruding piece. These protruding pieces 13a, 13b
Is a cartridge body 2c whose front end and side end are respectively
The front and side portions are substantially flush with each other. By providing the pair of protrusions 13a and 13b in this manner, an erroneous insertion detection groove 13 having a tapered portion as a bottom surface is formed at a corner on the front side of the cartridge body 2c.

The erroneous insertion detecting groove 13 is used for distinguishing the recording density and recording capacity of the disk 1 stored in the disk cartridge 2 and the recording system from other disks. The insertion of the disc cartridge 2 provided with the erroneous insertion detection groove 13 into the disc cartridge mounting device shown in FIGS.
In this disc cartridge mounting device, the disc cartridge 103 that can be inserted into the mounting device is identified.

In the disk cartridge mounting device according to the present invention in which the disk cartridge 2 and the conventional disk cartridge 103 are selectively inserted, the erroneous insertion detection groove 13 is provided at the corner of the cartridge body 2c as described above. The disk cartridge 2 includes a cartridge holder 21 to be inserted with the front side to which the shutter member 4 is attached as an insertion end and the insertion direction in the direction of arrow A in FIG.

The cartridge holder 21 is formed in a substantially housing shape having a size capable of holding the disk cartridge 2 to be inserted, and a shutter release lever for opening a shutter member 4 provided on the upper surface of the disk cartridge 2. 22 is rotatably mounted. The cartridge holder 21 holds the disc cartridge 10.
A detection lever 23 for detecting that the 3 is inserted in the wrong direction is rotatably mounted.

The base end of the shutter release lever 22 is rotatably supported at a substantially central portion of the upper surface of the cartridge holder 21 via a support shaft 22a. A shutter release pin 22b serving as a shutter release member is erected on the distal end side of the shutter release lever 22. Shutter release pin 2
Reference numeral 2b denotes the cartridge holder 2 via a slit 24 provided on the upper surface of the cartridge holder 21 along a movement locus about the support shaft 22a of the shutter release pin 22b.
1. The shutter release lever 22 is urged by a first tension coil spring 26 in a direction to move the shutter release pin 22b in the direction of arrow H in FIG. The first tension coil spring 26 has one end locked by a spring locking protrusion 22 c protruding from the shutter release lever 22, and the other end formed by a spring locking protrusion protruding from the cartridge holder 21. 27. The shutter release lever 22 is positioned at an initial position by contacting a positioning protrusion 28 protruding from the cartridge holder 21.

The detection lever 23 has a support shaft 2 at the base end.
The cartridge holder 21 is rotatably supported on one upper surface side via the cartridge holder 3a. A detection pin 23b is erected on the tip side of the detection lever 23. Detection pin 2
3 b protrudes into the cartridge holder 21 via a cutout 25 provided on one side of the cartridge holder 21. A protruding portion 2 is provided at the tip end of the detection pin 23b.
3c is provided. As shown in FIG. 2, the protrusion 23c is provided at a position corresponding to the erroneous insertion detection groove 13 provided in the disk cartridge 2 inserted into the cartridge holder 21, and the tip of the detection pin 23b is connected to the protrusion 23c. It is formed so as to expand in diameter in a substantially disk shape.

The detection lever 23 is moved by a second tension coil spring 29 in the direction of arrow I in FIG.
It is positioned at the initial position in a state where it is urged in a direction for moving b inside the cartridge holder 21. One end of the second tension coil spring 29 is locked by a spring locking protrusion 31 protruding from the erroneous insertion detection lever 23,
The other end is locked by a spring locking protrusion 30 protruding from the cartridge holder 21.

When the disk cartridge 2 according to the present invention is inserted into the cartridge holder 21 configured as described above with the insertion direction indicated by the arrow C in FIG. 3, the distal end of the shutter release pin 22b releases the shutter of the disk cartridge 2. Into the recess 10. When the disc cartridge 2 is further inserted into the cartridge holder 21,
The protruding portion 23c of the detection pin 23b is
Abuts the bottom of the In this state, the cartridge 2
Is inserted into the cartridge holder 21, the detection lever 23 is rotated to the outside of the cartridge holder 21 in the direction of arrow F in FIG. Allows for further insertion into the

When the disc cartridge 2 is inserted into the cartridge holder 21 from an incorrect direction, the protrusion 23c of the detection pin 23b is
The rotation of the detection lever 23 is regulated by contacting the front surface of the disc cartridge 2, and further insertion of the disc cartridge 2 into the cartridge holder 21 is regulated.

When the disc cartridge 2 is inserted into the cartridge holder 21, the shutter release pin 22b is
As shown in FIG. 4, the shutter opening lever 22 is pressed by the shutter opening member guide portion 11 provided on the cartridge main body 2c, and the shutter opening lever 22 is rotated in the direction of arrow D in FIG. The shutter member 4 is pressed by the shutter release pin 22b, and is moved in a direction to open the recording and reproducing openings 3a and 3b in the direction of arrow E in FIG.

When the disk cartridge 2 according to the present invention is inserted further inside the cartridge holder 21, the shutter release pin 22b engages with the shutter release member engaging portion 12 as shown in FIG. 2
Is held at a predetermined mounting position in the cartridge holder 21. At this time, the recording / reproducing openings 3a,
3b is opened, and a part of the disk 1 is exposed to the outside of the disk cartridge 2 over the inner and outer circumferences.

In the recording and / or reproducing apparatus provided with the disk cartridge mounting apparatus having the above-described structure, when the disk cartridge 2 according to the present invention is mounted by using the disk cartridge mounting apparatus, the recording / reproducing opening is formed. A recording / reproducing pickup device (not shown) faces the disk 1 facing outward via the 3a and 3b, and a chucking portion 1a provided at the center of the disk 1 is provided on the recording and / or reproducing device side. Chucked by the rotating disk drive mechanism. In this state, the disk rotation drive mechanism drives the disk 1 to rotate, and the pickup device scans the disk 1 to record or reproduce information signals.

The second disk cartridge 2 according to the present invention and the conventional first disk cartridge 103
The disc cartridge mounting device into which the tape cartridge 10 is selectively inserted has a tapered portion 10 as shown in FIGS.
The disk cartridge 103 in which the protruding pieces 13a and 13b are not provided at the corners of the cartridge body 102 provided with 2a can also be mounted on the recording and / or reproducing apparatus. In this case, the detection pin 23
b rotates the detection lever 23 by the movement of the protruding portion 23c on the tapered portion 102a.

That is, the disk cartridge mounting device shown here is a conventional first disk cartridge 10.
3. The second embodiment according to the present invention having not only the protrusion 3 but also the protrusions 13a and 13b and the erroneous insertion detection groove 13 is provided.
Can also be mounted on the recording and / or reproducing apparatus.

When the disc cartridge 2 according to the present invention is inserted into the disc cartridge mounting device shown in FIGS. 8 and 9 described above, the projections 13a and 13b as the engaging portions are arranged as shown in FIG. As shown, the detection pin 110b
, The rotation of the detection lever 110 against the urging force of the tension coil spring 110c is restricted, and further insertion into the cartridge holder 107 is restricted.
Prevent erroneous insertion.

In the above-described disk cartridge mounting apparatus, the erroneous insertion detecting groove 13 is provided with the erroneous insertion detecting pin 23b.
When a disc cartridge provided at a position not corresponding to the projection 23c is inserted into the cartridge holder 21, the projection 23c abuts on the front surface of the disc cartridge to restrict the rotation of the detection lever 23. In addition, mounting on a recording and / or reproducing apparatus is restricted. In other words, the disc cartridge mounting apparatus can identify the disc cartridge provided with the erroneous insertion detection groove in accordance with the type of the accommodated disc by the position and width at which the erroneous insertion detection groove is provided.

The projection 23 provided on the detection pin 23b provided on the disk cartridge mounting device described above.
The shape of c and the like can be appropriately changed according to the shape of the erroneous insertion detection groove provided in the disk cartridge. The protrusion 23c may be provided integrally with the detection pin 23b, or may be configured by fitting an annular member to the detection pin 23b.

Further, the projecting portion 23c may be provided not only coaxially with respect to the erroneous insertion detecting pin 23b as in the above-described embodiment but also in an eccentric state. May be formed by bending. When the protrusion 23c is provided eccentrically with respect to the detection pin 23b, or when the tip of the detection pin is bent, the protrusion 23c is located on the inner side of the cartridge holder 21 with respect to the detection pin 23b. With this arrangement, it is possible to reduce the amount of protrusion of the protrusion 23c outward of the cartridge holder 21 when the disk cartridge is inserted.

[0050]

As described above, the disk cartridge according to the present invention can be selectively used together with the conventional first disk cartridge in a recording and / or reproducing apparatus which can be used together with the conventional first disk cartridge. Can be mounted on the recording and / or reproducing apparatus which can mount only the conventional first disk cartridge. Therefore, the recording and / or reproducing apparatus which can be appropriately used can be mounted on the recording and / or reproducing apparatus. It is possible to attach it only to Therefore, mounting on a recording and / or reproducing apparatus using only the other first disk cartridge can be erroneously restricted, and the stored disk can be reliably protected.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk cartridge according to the present invention and a disk cartridge mounting device in which a disk cartridge according to the present invention can be selectively inserted together with a conventional first disk cartridge.

FIG. 2 is an enlarged side view of a main part showing a shape of an erroneous insertion detection pin provided in a cartridge holder.

FIG. 3 is a partially cutaway plan view showing a state in which the disk cartridge according to the present invention is inserted into the disk cartridge mounting device.

FIG. 4 is a partially cutaway plan view showing a state in which the disk cartridge according to the present invention is partially inserted into the disk cartridge mounting device.

FIG. 5 is a partially cutaway plan view showing a state where the disk cartridge according to the present invention is mounted on the disk cartridge mounting apparatus.

FIG. 6 is a perspective view showing a disk cartridge according to the present invention in which an erroneous insertion detection groove is provided at a corner on the front side.

FIG. 7 is a partially cutaway plan view showing a state where the disk cartridge according to the present invention is mounted on a conventional disk cartridge mounting apparatus.

FIG. 8 is a perspective view showing a conventional disk cartridge mounting device and a conventional disk cartridge mounted on the disk cartridge mounting device.

FIG. 9 is a partially cutaway plan view showing a state in which the conventional first disk cartridge is being inserted into the conventional disk cartridge mounting apparatus.

[Explanation of symbols]

1 disk, 2 disk cartridge, 13
Misinsertion detecting groove, 13a first protrusion, 13b second protrusion.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) G11B 23/00-23/033 G11B 17/02-17/04

Claims (1)

(57) [Claims] 1. A disk is rotatably stored on a front side.
Having a tapered portion for preventing erroneous insertion formed at the corner of
One disk cartridge has approximately the same size
Grooves for erroneous insertion are formed to correspond to the taper
A second disk cartridge, having an engaging portion protruding near the groove,
First recording using only a disk cartridge and
And / or provided on the device when inserted into the playback device
The first erroneous insertion detection member is engaged with the engagement portion.
To prevent insertion into the device,
The second disk cartridge uses any of the second disk cartridges.
2 when inserted into the recording and / or playback device
A second erroneous insertion detection member provided in the device is inserted into the groove.
A disk cartridge characterized in that the disk cartridge can be mounted in the apparatus by being engaged.