JPH0547093A - Disk cartridge drive - Google Patents

Abstract

PURPOSE:To prevent an erroneous insertion by providing a member detecting the width of a disk cartridge on the place where the inserted disk cartridge is abutted and preventing the loading of the disk cartridge with width less than the prescribed width to a disk driving mechanism. CONSTITUTION:Erroneous insertion detection members 281 and 282 detecting the width of disk cartridge are provided on and under the place where the inserted disk cartridge is abutted, preventing the loading of the disk cartridge with width less than the prescribed width to the disk driving mechanism. Moreover, the same is true by combining an erroneous insertion detection member 283 and a spring 284 and detecting the width of the disk cartridge, preventing the damage of the disk cartridge drive due to an erroneous insertion preliminarily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge drive for handling a disk cartridge, and more particularly to a means for preventing erroneous insertion in a front loading type disk cartridge drive.

[0002]

2. Description of the Related Art Generally, a flexible magnetic disk is used as a replaceable external storage means of a computer. As the magnetic disk, a standard disk having a diameter of 8 inches, a 5.25 inch mini disk and a 3.5 inch micro disk are currently used. Unlike other magnetic disks, the 3.5-inch micro disk is built in a rigid cartridge and can be used stably, and a 2ED can store a large amount of data of 4 MB. It is possible.

On the other hand, with the development of opto-electronic technology, optical discs in which information is written and read by an optical head such as a compact disc or a video disc have become widespread in recent years. Therefore, recently, these large-capacity optical disks have been attracting attention as exchangeable external storage devices for computers, and are gradually becoming popular. Of these optical disks, those with a 12 cm diameter and those with a 8 cm compact disk are called CD-ROMs, and although they are relatively small, they have a large storage capacity of about 540 MB for a 12 cm diameter disk and about 150 MB for an 8 cm compact disk. have.

Among these CD-ROMs, those having a diameter of 8 cm have a thickness of 1.2 mm, a central hole diameter of 15 mm, and a clamping area diameter for holding a disc of 26.0-3.
It is specified as 3.0 mm.

Since this 8 cm CD-ROM is very small and easy to store and carry, it may be damaged during carrying, handling or replacement. Therefore, like the 3.5-inch micro disk mentioned earlier, ABS
It is often used by being housed in a rigid cartridge made of resin or the like.

The shape of this compact disc cartridge is shown in FIGS. 3 (a) and 3 (b). 1A shows the front surface of the compact disc cartridge 1 and FIG. 1B shows the back surface thereof, and an arrow 5 indicating the insertion direction is provided on the front surface of the compact disc cartridge. The compact disc cartridge 1 shown in this figure has an outer dimension of 94 mm in length, 90 mm in width, and 5.6 mm in thickness. An 8 cm CD-ROM 2 is housed inside, and a shutter 3 that can be opened and closed is on the front and back. It is attached across both sides.

On the back surface of the compact disc cartridge shown in FIG. 1B, there are provided gripping slots 6 and 6, a positioning hole 7 and an alignment hole 8 which are used for grasping the compact disc cartridge and pulling it into the drive. ..

Further, a shutter opening / closing slot 9 is provided on the back side of the shutter 3, and when the compact disc cartridge is inserted into the compact disc cartridge drive, the shutter 3 is opened and the disc is held in this opening. A spindle and a clamper for driving are introduced. Information is written and read by the optical head through the opening.

The length and width of the compact disc cartridge 1 are 94 mm and 90 mm, respectively, as described above. Since the width is shorter than the length, it is impossible to insert the length direction and the width direction by mistake. is there. However, it is possible to insert it inside out and reverse it.

In order to prevent such erroneous insertion, an erroneous insertion identifying section 4 is provided on the right side of the front end in the insertion direction.
This is the hypotenuse of a right-angled isosceles triangle with two sides 5 mm. Since the erroneous insertion identifying section 4 is provided only at one of the eight edges of the compact disc cartridge which is a rectangular parallelepiped as a whole, the compact disc cartridge is It is not inserted correctly. FIG. 4 shows a conventional example of an erroneous insertion prevention mechanism using this insertion direction identification unit 4.

This erroneous insertion preventing mechanism is rotatably attached to the compact disk cartridge drive housing by a rotating shaft 13 and is L-shaped with one side having a long side biased toward the compact disk cartridge by a spring (not shown). The erroneous insertion prevention member 11 has a compact disc cartridge locking portion 12 at the tip of its short side.

When the compact disc cartridge 1 is correctly inserted into the compact disc cartridge drive having the erroneous insertion preventing mechanism having the above-mentioned structure as shown in FIG. 3A, the inclined portion of the insertion direction identifying portion 4 is formed as shown in FIG. By contacting the erroneous insertion prevention member 11, the compact disc cartridge 1 is loaded while removing the erroneous insertion prevention member 11.

When the compact disc cartridge 1 is inserted in the wrong direction, that is, when it is turned upside down or the front and back are reversed, a ridge having no oblique side portion other than the insertion direction identification portion 4 of the compact disc cartridge contacts the erroneous insertion preventing member 11. Contact. Therefore, the compact disc cartridge is locked by the locking portion 12 of the erroneous insertion prevention member 4, and the erroneous insertion of the compact disc cartridge is prevented.

By the way, the outer dimensions of the 3.5-inch micro disk cartridge are 94 mm in length and 90 mm in width.
On the right side of the front end portion in the insertion direction, there is provided an erroneous insertion identification portion 4 which is a slanted portion of a right-angled isosceles triangle having two sides of 5 mm and an inclined portion, like the compact disc cartridge. These external dimensions are the same as those of the compact disc cartridge, and only the thickness is different from the compact disc cartridge of 5.6 mm to 3.3 mm.

Therefore, it is impossible to erroneously insert the compact disk cartridge into the micro disk drive, but it is possible to erroneously insert the micro disk into the compact disk cartridge drive. In this case, even if the outer dimensions are the same, since the operating position of the shutter opening / closing mechanism and the movement amount of the shutter are different, the optical head of the drive or the micro disk may be damaged if misloaded.

The erroneous insertion prevention mechanism can detect an erroneous insertion of a compact disk cartridge, but can detect an erroneous insertion of a micro disk having the same shape but different thicknesses. I can't.

[0017]

SUMMARY OF THE INVENTION In this application,
It is an object of the present invention to obtain an erroneous insertion prevention mechanism for the purpose of preventing accidents such as drive damage due to erroneous insertion of an unauthorized disk cartridge into a disk cartridge drive.

[0018]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides, in a disk cartridge drive for reproducing / recording a recording medium housed in a disk cartridge, the disk cartridge drive is a housing for housing the disk cartridge. And a pair of engaging members disposed in the housing with a predetermined interval in the thickness direction of the disc cartridge and contacting the end surface of the disc cartridge when the disc cartridge is inserted,
In a disc cartridge drive characterized in that a disc drive mechanism is mounted on a disc when a pair of engaging members are operated "and" a disc cartridge drive for reproducing / recording a recording medium housed in a disc cartridge, The disc cartridge drive has a storage portion for storing the disc cartridge, and is disposed in either the upper portion or the lower portion of the storage portion so as to come into contact with either the upper end surface or the lower end surface of the disc cartridge when the cartridge is inserted. A disc cartridge drive characterized in that a coupling member and a biasing member that biases the disc cartridge toward the engagement member are provided, and the disc drive mechanism is mounted on the disc when the engagement member is actuated. " Is essential to the composition To provide the invention to be.

[0019]

In the present invention having the above structure, the thickness of the inserted cartridge is detected by the erroneous insertion detecting member, and when the inserted disk cartridge has a predetermined thickness, it is a regular disk cartridge. Therefore, the disk drive mechanism is mounted on the disk. If the disk drive mechanism does not have a predetermined thickness, the disk drive mechanism is not mounted on the disk as an irregular disk cartridge.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, an erroneous insertion prevention mechanism applied to a compact disc cartridge drive will be described. FIG. 1 shows the configuration and operation of one embodiment of the erroneous insertion prevention mechanism according to the present invention.
(A) shows the state at the start of the disc cartridge insertion operation, and (b) shows the state at the end of the insertion operation. The compact disc cartridge drive shown in this figure is provided with a mechanism for opening and closing the shutter and a mechanism for preventing erroneous insertion.

The shutter opening / closing mechanism comprises a shutter opening / closing arm 10, a slide member 11 and a locking arm 12. The shutter opening / closing arm 10 is provided with a shutter opening / closing pin 14 that engages with the shutter opening / closing slot 9 at one end and an engagement pin 1 provided at the slide member 11 at the other end.
6 is loosely fitted in the elongated hole 15, and an intermediate portion is rotatably supported by a rotating shaft 13 provided in the compact disk cartridge drive housing.

The slide member 11 is constructed so as to slide in a direction perpendicular to the inserting direction of the disc cartridge 1, and is biased by a spring 21 in a direction opposite to the sliding direction. Further, a hole portion 20 including a slant portion 18 and a concave portion 19 is provided, and a pin 17 provided at one end of the locking arm 12 is fitted into the hole portion 20.

The locking arm 12 is rotatably attached to a shaft 22 provided on the body of the compact disc cartridge drive, and has a pin 17 at one end and an elongated hole 2 at the other end.
5, a pin 24 provided at one end of the eject lever 23 is loosely fitted. The eject lever 23 is urged toward the front end of the disk drive by a spring (not shown).

The erroneous insertion detecting mechanism is attached to the front end of the inserted disc cartridge and is attached to the shaft 27 so as to be overlapped at a predetermined interval so as to rotate against the spring 26 provided in the compact disc cartridge drive body. J
The erroneous insertion detection member 28 is composed of two plate-shaped members having the same character shape, and an engagement pin 29 provided on the eject lever 23.

The erroneous insertion detecting member 28 has a long side portion 30, a short side portion 31, a cutout portion 32 provided in the long side portion 30, and an abutting portion 33 for abutting the tip of the disc cartridge. The engagement pin 29 is engaged with the cutout portion 32, the disc cartridge abuts against the abutment portion 33, and the erroneous insertion detection member 28 rotates, whereby the engagement pin 29 is disengaged. The disk drive mechanism of the drive is operated by moving the disk drive mechanism toward the front end of the disk drive.

The operation of the shutter opening / closing mechanism and the erroneous insertion detection mechanism in this disk drive will be described. As shown in (a), when the disc cartridge is inserted into this disc drive, the shutter opening / closing slot 9 engages with the shutter opening / closing pin 14 provided at the tip of the shutter opening / closing arm 10, and the disc cartridge is inserted into the disc drive. As it is inserted, the shutter opening / closing arm 10 is pushed and pivots about the shaft 13 to open the shutter 3.

When the shutter opening / closing arm 10 rotates in the direction to open the shutter 3, the slide member 11 is provided with an engaging pin 16 loosely fitted in a long hole 15 provided at the other end of the shutter opening / closing arm 10. Slides against the spring 21. When the disc cartridge 1 is inserted to a predetermined position and the slide member 11 slides, the arm 1
2, the pin 17 engaged with the hole 20 is provided with the inclined portion 18
The slide member 11 is locked by riding over and entering the recess 19.

On the other hand, when the disc cartridge is inserted to a predetermined position, the abutting portion 33 of the erroneous insertion detecting member 28 is pushed by the erroneous insertion detecting mechanism so that the erroneous insertion detecting member 28 is rotated. It rotates around 27 against the spring 26. When the erroneous insertion detecting member 28 is rotated, the cutout portion 3 is formed.
The pin 29 that has been engaged with 2 is disengaged, the eject lever 23 moves toward the front end of the disc drive, the disc drive mechanism of the drive is set to the operating position, and the disc cartridge is loaded.

By the way, the erroneous insertion detecting member 28 is composed of two plate-like members having the same J-shape, which are attached to each other at predetermined intervals as described above. Therefore, the pin 29 does not move in the front end direction of the disk drive even if only one of the engagement with the cutout portion 32 of the two plate-shaped bodies is released, and the cutout portion 3 of the two plate-shaped bodies is not moved.
Only when both of the engagements with respect to 2 are released, the disk cartridge drive is moved toward the front end, and the disk cartridge is loaded into the compact disk cartridge drive.

Next, the eject operation for ejecting the compact disc cartridge from the compact disc cartridge drive will be described. In the state shown in FIG. 1B, when the eject lever 23 is pushed, the arm 1 loosely fitted to the rotating shaft 25 by the eject lever 23.
2 rotates as indicated by the one-dot chain line.

When the arm 12 rotates, the slide member 11
The lock of the slide member 11 is released when the pin 17 that locks the slide member 11 into the recess 19 is unlocked, and the shutter opening / closing arm 10 is rotated by the spring 21 to close the shutter 3 and the compact disc. The cartridge 1 is ejected.

The detection operation of the erroneous insertion detection mechanism will be described with reference to FIG. In this figure, (a) and (b) show the case where the micro disk cartridge is erroneously inserted, and (c) shows the case where the compact disk cartridge is correctly inserted. Also, 281 and 282
Are two plate-like members having the same shape and having a J shape, which constitute the erroneous insertion detection member 28.

When distinguishing a compact disc cartridge from a microdisc cartridge, the gap between the erroneous insertion detecting members 281 and 282 is the gap at which both members are pressed by the compact disc cartridge, ie, 5.6.
The intervals are less than or equal to mm, and are greater than the thickness of the microdisk cartridge, that is, greater than or equal to 3.3 mm.

In the example shown in (a), the micro disk cartridge is inserted in the lower side of the disk cartridge drive, and the plate-like body 281 does not rotate because it is not in contact with the front end of the micro disk cartridge. Only the plate-like body 282 is in contact with the front end of the micro disk cartridge and is rotating. Therefore, the notch 3
The micro disk cartridge is not loaded in the disk cartridge drive because the engagement pin 29 does not disengage from the disk cartridge drive.

In the example shown in (b), the micro disk cartridge is inserted in the upper side of the disk cartridge drive, and only the plate-shaped body 281 is in contact with the front end of the disk cartridge to rotate, and the plate-shaped body is rotated. 282
Does not rotate because it is not in contact with the front end of the disc cartridge. Therefore, the engagement pin 2 for the notch 32
The microdisk cartridge will not be loaded into the disk cartridge drive because the 9 will not disengage.

In the example shown in (c), since the compact disc cartridge is inserted into the disc cartridge drive, both the plate-shaped members 281 and 282 contact the front end of the compact disc cartridge and rotate. Therefore, the engagement pin 2 for the notch 32
9 is disengaged and the compact disc cartridge is loaded into the disc cartridge drive.

The erroneous insertion detection member 28 in the examples shown in (a) to (c) above uses two plate-shaped members, but this plate-shaped member is not always required. Therefore, the configuration for detecting erroneous insertion by only one plate is shown below.

In the erroneous insertion detecting mechanism shown in FIGS. 8D and 8E, the plate-like body 283 which is the erroneous insertion detecting member 28 is provided on the upper side, and the spring 284 for pressing the disk cartridge downward. Is provided on the upper side.

The example shown in (d) is an example in which a micro disk cartridge is inserted in the disk cartridge drive, and the micro disk cartridge is pressed downward by 284. Therefore, the plate-like body 283
Does not rotate because it is not in contact with the front end of the micro disk cartridge. Therefore, the engagement of the engagement pin 29 with the cutout portion 32 does not come off, so that the micro disk cartridge is not loaded in the disk cartridge drive.

The example shown in (e) is an example in which a compact disc cartridge is inserted into the disc cartridge drive, and the plate-like member 28 is in contact with the front end of the disc cartridge and rotates. Therefore, the engagement pin 29 is disengaged from the notch 32, and the compact disc cartridge is loaded into the disc cartridge drive.

In the erroneous insertion detection mechanism shown in FIGS. 5F and 5G, the plate-like member 285 is provided on the lower side, and the spring 286 for pressing the disc cartridge or the disc on the upper side is provided on the lower side. Has been.

The example shown in (g) is an example in which a micro disk cartridge is inserted in the disk cartridge drive, and the micro disk cartridge is a spring 286.
Is pushed upward by. Therefore, the plate-like body 2
Since 85 is not in contact with the front end of the micro disk cartridge, it does not rotate. Therefore, the engagement of the engagement pin 29 with the notch 32 does not come off, so that the micro disk cartridge is not loaded in the disk cartridge drive.

The example shown in (h) is an example in which a compact disc cartridge is inserted into the disc cartridge drive, and the plate member 285 is in contact with the front end of the compact disc cartridge and rotates. Therefore, the engagement pin 29 is disengaged from the notch 32, and the compact disc cartridge is loaded into the disc cartridge drive.

In the embodiment described above, the erroneous insertion detection mechanism is in contact with the front end of the inserted disk cartridge and has a predetermined interval so as to rotate about the shaft against the spring provided in the compact disk cartridge drive body. It is composed of an erroneous insertion detection member composed of J-shaped plate-like members mounted in a stacked manner with each other, and an engagement pin urged by a spring in the front end direction of the disk drive.

However, the erroneous insertion detecting member in the erroneous insertion detecting mechanism of the present invention need not be a J-shaped plate as long as it moves according to the thickness of the inserted disk cartridge. For example, a plate-shaped body or a rod-shaped body having an arbitrary shape such as a linear shape is possible. Further, the direction of contact with the disk cartridge may be not only from the front end direction of the disk cartridge but also from the upper side or the lower side, or from the side.

In the above embodiment, the present invention is 8 cmCD-
Although what has been described as being applied to the ROM cartridge drive has been described, the present invention is also applicable to other drives having the same mechanism, that is, a 3.5-inch micro disk drive, an optical disk drive, a CD player, an optical disk player, and the like. ..

[0047]

As is clear from the above description, according to the present invention, it is possible to prevent accidents such as drive damage due to incorrect insertion of an unauthorized disk cartridge into the disk cartridge drive. It is possible to obtain a disk cartridge drive which has not existed in the past, and it is very effective when applied to a front loading disk cartridge drive.

[Brief description of drawings]

FIG. 1 is a structural and operational explanatory diagram of an embodiment of a disk cartridge drive of the present invention.

FIG. 2 is a specific configuration and operation explanatory diagram of an erroneous insertion prevention member.

FIG. 3 is a structural explanatory view of a compact disc cartridge.

FIG. 4 is a structural diagram and operation explanatory diagram of a conventional incorrect insertion detection mechanism.

[Explanation of symbols]

1 Cartridge 28,281,282,283,285 Misinsertion detection member 284,286 Spring

Claims (2)

[Claims] 1. A disc cartridge drive for reproducing / recording a recording medium stored in a disc cartridge, wherein the disc cartridge drive has a storage portion for storing the disc cartridge, and the storage portion has a thickness of the disc cartridge. A pair of engaging members that are arranged at a predetermined distance in the vertical direction and contact the end surface of the disc cartridge when the disc cartridge is inserted, and the disc of the disc drive mechanism is operated when the pair of engaging members act. A disk cartridge drive, which is characterized by being mounted on. 2. A disk cartridge drive for reproducing / recording a recording medium contained in a disk cartridge, wherein the disk cartridge drive has an accommodating part for accommodating the disk cartridge, and the accommodating part has an upper part or a lower part inside thereof. And an urging member for urging the disc cartridge toward the engaging member side. A disk cartridge drive, wherein the disk drive mechanism is mounted on the disk when the engaging member is actuated.