JPH0855414A - Disk reproducing device and disk cartridge misinsertion preventing device - Google Patents

Abstract

PURPOSE:To prevent the misinsertion of a cartridge into a magazine in a changer system disk reproducing device for housing the cartridge having a disk into the magazine. CONSTITUTION:A magazine 44 is freely rotatably housed in a reproducing device main body. An MD 10 is housed in each disk housing space 50 of the magazine 44. A slot 56 of a size allowing one MD 10 to be inserted and ejected is formed in the front panel 54 of the reproducing device main body. In the rear position of the slot 56, a disk cartridge misinsertion preventing device 57 for detecting if an MD10a being inserted through the slot 56 into a disk housing space 50a in a normal position and when this is not in the normal position, preventing its insertion in the middle is disposed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a changer type disc reproducing apparatus in which a plurality of cartridges each containing one disc are accommodated in a magazine, and any one of them is selected and reproduced by a drive unit. The present invention relates to the arrangement of a disk cartridge erroneous insertion prevention device and a specific configuration of the disk cartridge erroneous insertion prevention device for preventing the drive unit from being set in an incorrect posture.

[0002]

2. Description of the Related Art A conventional changer type disc reproducing apparatus stores a plurality of bare discs in a magazine like a CD (compact disc) changer.
It has been common to pull out an arbitrary disc from the magazine, set it in a drive unit equipped with a spindle motor, a pickup, etc. and reproduce it.

When the changer system is applied to a disc cartridge such as an MD (mini disc) which is stored in a magazine, the cartridge is stored in a magazine, and an arbitrary cartridge is pulled out and set in a drive unit for reproduction. It is possible to do it.

[0004]

In the case of a bare disc, even if the disc is accidentally set upside down inside the drive unit, no sound is played back, and the outer shape is the same, so the disc is the same. Alternatively, there is no danger of the drive unit breaking. However, in the case of a cartridge, the outer shape is generally different depending on the front and back or the direction, so if the cartridge is inserted into the drive unit by mistake in the insertion posture (front and back, ± 90 ° rotation, 180 °
The disk or drive unit may be damaged.

Therefore, in a single MD player or the like which stores and reproduces one cartridge, it is checked whether the cartridge is inserted in the correct posture during insertion into the drive unit, and if it is incorrect, no further insertion is made. In this way, incorrect insertion is prevented. However, in the case of the changer system, it is slow to check the erroneous insertion after the cartridge is sent to the drive unit, and it is necessary to prevent the erroneous insertion when the cartridge is inserted into the magazine. However, arranging the erroneous insertion prevention device in each disk storage portion of the magazine complicates the structure of the magazine, increases the size, and increases the cost.

The present invention solves the above-mentioned problems in the prior art, and prevents a mistaken insertion at the time of being inserted into a magazine with a simple structure. It is intended to provide an insertion prevention device.

[0007]

According to another aspect of the present invention, there is provided a disc reproducing apparatus, wherein one cartridge, which is formed at a predetermined position of the reproducing apparatus main body and accommodates one disc, can be inserted into and removed from the reproducing apparatus main body. And a plurality of partitioned cartridge storage spaces that are housed in the playback apparatus main body and that respectively store one cartridge, respectively, and any one of the plurality of cartridge storage spaces is inserted into the insertion slot. A magazine which is positioned behind the mouth and is movably arranged in the reproducing apparatus main body so that one cartridge can be taken in and out of the accommodating space through the insertion opening, and is housed in the reproducing apparatus main body. , A drive unit for receiving and reproducing any cartridge stored in the magazine, and a drive unit arranged behind the insertion slot, A disc cartridge erroneous insertion prevention device that detects whether the cartridge being inserted into the magazine from the insertion port is inserted in the proper posture and prevents the insertion in the middle when the cartridge is not in the proper posture It will be done.

According to a second aspect of the present invention, there is provided a disk cartridge erroneous insertion preventing device, which is a cartridge for accommodating a single disk, wherein the front surface and the back surface constitute a surface parallel to the surface of the accommodated disk, and the aforementioned housing. The playback is formed at a right angle to the front surface of the disk, which constitutes a surface perpendicular to the surface of the disk, and constitutes the leading end and the trailing end of the trailing end in the direction of insertion into the playback device body. The front end surface has both left and right side surfaces that are parallel to the insertion direction into the main body of the apparatus, and the longitudinal corners of the front end surface are formed to have a larger roundness than the longitudinal corners of the rear end surface. A disc reproducing apparatus in which a cartridge having a concave portion is inserted at a predetermined position in the longitudinal direction of the both side surfaces in a position offset toward the front surface or the back surface in the lateral direction thereof, At the position behind the inlet, the movable member pair is arranged at positions corresponding to both ends in the longitudinal direction of the distal end surface of the cartridge that is being inserted, while being biased in a direction of approaching each other. The device for preventing erroneous insertion of a disk cartridge, wherein the movable member pair abuts the corners of both ends in the longitudinal direction of the leading end of the cartridge inserted from the insertion port, and the shape of the corner is the tip. In the case where the both end portions in the longitudinal direction of the surface have a large roundness, they are driven by the pressing force of the inserting operation in a direction in which the distance is widened against the biasing force without engaging with the corner portion. When the cartridge is allowed to be inserted further into the rear side and the shape of the corner portion is a small roundness at both ends in the longitudinal direction of the rear end face, the cartridge is engaged with the corner portion and the insertion is performed. After pressing the pressing force of the cartridge to prevent the cartridge from being inserted further into the back side, and after the tip end surface of the cartridge passes through the hook-shaped portion, the biasing force is applied to the both sides. It comes into contact with the surface and slides in the longitudinal direction on the side surface with the insertion operation of the cartridge. Allowing the cartridge to be inserted further into the back side, and when the cartridge is inserted inside out, turning the cartridge into the recess while sliding on the side surface And a convex portion that prevents insertion in the opposite direction and allows pulling out in the opposite direction.

According to a third aspect of the present invention, there is provided a disk cartridge erroneous insertion preventing device, wherein the cartridge case is formed such that the lengths of the both side surfaces in the longitudinal direction are shorter than the lengths of the leading end surface and the rear end surface in the longitudinal direction. In the movable member pair, the distance between the hook-shaped portions is set to be shorter than the length of the side surface of the cartridge in the longitudinal direction when the cartridge is not inserted, and The longitudinal end portions of the distal end surface abut at the positions before the longitudinal end portions reach the hook-shaped portion, and have inclined surfaces that incline toward each other toward the rear side. It will be.

[0010]

According to the changer type disc reproducing apparatus of the present invention, the cartridge is erroneous in the magazine by providing the insertion opening for inserting one cartridge and arranging the erroneous insertion preventing device behind the insertion opening. It is possible to prevent the drive unit from being stored in the posture, and thus to prevent the wrong insertion into the drive unit. Therefore, it is not necessary to dispose an erroneous insertion prevention device for each cartridge storage space of the magazine, and the magazine can be made compact with a simple structure.

According to the erroneous disk cartridge insertion preventing device of the second aspect of the invention, the hook-shaped portion is provided by utilizing the fact that the rounded corners of the longitudinal end portions of the cartridge case are different between the front end surface and the rear end surface. The large rounded corners of the front end face are inserted without engaging the hooked parts, and the small rounded corners of the rear end face are engaged with the hooked parts to prevent insertion. Can be prevented from being inserted by mistake (rotated by 180 ° and inserted). In addition, by using a recess formed on one side of the side surface of the cartridge toward the front side or the back side, a protrusion is provided on the incorrect insertion prevention device, and the protrusion is not provided for correct insertion on the front and back sides. When the cartridge is slid on the side of the cartridge without being fitted in the recess, and the convex part is fitted in the recess to prevent sliding, the cartridge can be inserted inside out. Can be prevented.

According to the disk cartridge erroneous insertion preventing device of the third aspect, when the side surface of the cartridge is shorter than the front end surface and the rear end surface, the length of the insertion opening in the longitudinal direction is longer than the length of the side surface of the cartridge. , If the side is mistaken for the front end and it is inserted into the insertion opening as the leading end, it will be inserted as it is. Therefore, by forming an inclined surface on the movable member and setting the distance between the hook-shaped portions when the cartridge is not inserted to be shorter than the length of the side surface, when the side surface is inserted as the leading end from the insertion opening, The small rounded corner at one end in the longitudinal direction of the leading end surface (that is, the side surface) is engaged with the hook-shaped portion to prevent the insertion. Moreover, with respect to the regular insertion of the front end surface, the corners of the both end portions in the longitudinal direction of the front end surface contact the inclined surfaces, and the movable member is expanded as the cartridge is inserted, so that the cartridge can be inserted. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an MD changer (changer type MD player) will be described below. First, the MD cartridge standard will be described with reference to FIG. As shown in FIG. 2A, the MD 10 includes a magneto-optical disk 1 inside a thin cartridge case 12.
4 is rotatably accommodated. The cartridge case 12 has a front surface 1 as shown in a hexagonal view in FIG.
6, back surface 17, front end surface 18, rear end surface 19, left side surface 20,
It has a right side surface 21. The longitudinal corners 22 and 24 of the front end surface 18 are formed to have a large roundness (that is, a large radius), and the longitudinal end corners 26 and 28 of the rear end surface 19 are formed to be small (that is, a small radius). Side 2
Recesses 30 and 32 are formed at positions closer to the back surface of 0 and 21. The recesses 30 and 32 are originally prepared for power loading.

Besides, on the front surface 16 and the back surface 17,
Shutters 34 and 35 connected to each other are arranged to slide in the direction of arrow A so as to be opened and closed. An opening 37 is formed in the back surface 17 to expose the clamping plate 36 at the center of the disk 14. On the surface 16,
An insertion direction mark 38 indicating the insertion direction into the playback device is formed. In addition, the length L in the longitudinal direction of the side surfaces 20 and 21
1 is formed to be shorter than the length L2 of the front end face 18 and the rear end face 19 in the longitudinal direction. The grooves 31 and 33 formed on the side surfaces 20 and 21 are used to prevent erroneous insertion when the MD 10 is inserted into the drive unit in a normal single MD player.

FIG. 3 shows an embodiment of an MD changer to which the present invention is applied. This MD changer 40
A ring-shaped (doughnut-shaped) magazine 44 is housed in the playback device main body 42 so as to be rotatable in both left and right directions with the center of the ring as a rotation shaft 46. Magazine 44
Is driven to rotate in both left and right directions by a magazine driver 48. In the magazine 44, a plurality (for example, 100
A plurality of disc storage spaces 50 are formed radially at a predetermined pitch, and each of the disc storage spaces 50 accommodates one MD 10 containing a magneto-optical disc in a cartridge case and is arranged side by side in a vertical posture. It

In the central portion of the front panel 54 of the reproducing apparatus main body 42, one vertical slot 56 (insertion slot) is formed. The slot 56 is formed in such a size that one MD 10 can be inserted and removed, and one MD 10 can be put in and taken out from one disc storage space 50a located behind it. At the position behind the slot 56, it is detected whether the MD 10a being inserted into the disc storage space 50a from the slot 56 is inserted in the proper posture, and if the MD 10a is not in the proper posture, the insertion is blocked midway. A disc cartridge erroneous insertion prevention device 57 is provided for this purpose.

A drive unit 60 is fixedly arranged in the central space 58 of the ring-shaped magazine 44 in the reproducing apparatus main body 42. The drive unit 60 is for reproducing any one of the MDs 10 stored in the magazine 44, and includes a spindle motor and an optical pickup. When it has a recording function, it further comprises a recording magnetic head. Further, here, the drive unit 60 includes a mechanism for exchanging the MD 10 with the magazine 44 and a mechanism for ejecting the MD 10 from the slot 56. These mechanisms are
It is driven by motor power based on the user's key operation.

The drive unit 60 has a disk storage space 50a located behind the slot 56 in this example.
Is arranged on the same plane as the path leading to the path (especially on the extension line L of the path here), and the MD 10 is exchanged with the storage space 50a. Therefore, the slot 56
When playing MD10a newly inserted from
0a can be sent as it is to the drive unit 60 through the disk storage space 50a at the rear position of the slot, so that the magazine 44 does not have to be rotated, and the time until the start of reproduction can be shortened.

On the front panel 54 of the reproducing apparatus main body 42,
An operation unit 66 in which a numeric keypad for keying in the disc number (address of the disc storage space) and the song number to be reproduced by the user and various operation keys for instructing reproduction, stop, pause, etc. are arranged. Further, there is provided a display section 68 for displaying the number of the disc being reproduced, the tune number, and the presence or absence of the disc at each address.

FIG. 1 is a plan view of the main part of the MD changer 40 shown in FIG. In the magazine 44, partition plates 70 are radially arranged around the rotation shaft 46 at a predetermined pitch, for example, 1
00 sheets are attached. In the disk storage space 50 formed between the partition plates 70, the MDs 10 inserted from the slots 56 are stored one by one. The MD 10 stored in the disk storage space 50a behind the slot 56 can be taken in and out in both the direction of the drive unit 60 and the direction of the slot 56.

The drive unit 60 is fixedly arranged on an extension line L of a straight line path from the slot 56 to the disk storage space 50a at the rear position thereof. In the drive unit 60, a mechanism for exchanging the MD 10 with the spindle motor 72, the optical pickup 74, and the disc storage space 50a behind the slot, and the MD 10 in the disc storage space 50a behind the slot are pushed out through the slot 56. A mechanism (not shown) for the above is provided. Drive unit 60
On the basis of a reproduction command from the user, the MD 10 pulls out the MD 10 from the disk storage space 50a at the rear position of the slot, sets it on the spindle motor 72, drives it to rotate, and reproduces it by the optical pickup 74.

Another MD1 housed in magazine 44
When a command to reproduce 0 is given, the MD 10 set in the drive unit 60 is returned to the original disc storage space 50, the magazine 44 is rotated, and the disc storage space 50 at the designated address is stored in the slot 56. Positioned at the back position, the drive unit 60 pulls out the MD 10 from the disc storage space 50 and plays it.

Disk cartridge erroneous insertion prevention device 57
FIG. 4 shows a specific configuration of the above. In FIG. 4, (a) is an external view of the slot 56 formed on the front panel 54 of the reproducing apparatus main body 42, and (b) is a block diagram of the disk cartridge erroneous insertion prevention device 57 arranged behind the slot 56. is there. The slot 56 is formed such that its longitudinal direction is formed in a vertical direction, and the length Ls in the longitudinal direction is formed to be slightly longer than the length L2 in the longitudinal direction of the front and rear end faces 18, 19 of the MD 10, and the length in the lateral direction. The width Ws is slightly longer than the thickness W1 of the MD 10. The central portion in the longitudinal direction of the slot 56 is formed in the recess 80 so that the MD 10 can be pushed into the magazine 44 with a finger.

Disk cartridge erroneous insertion prevention device 57
Are the first and second movable levers 82 disposed at the positions corresponding to both ends in the longitudinal direction of the front end surface 18 of the MD 10 (that is, the positions corresponding to both ends in the longitudinal direction of the slot 56) in the position behind the slot 56. , 84. The movable levers 82 and 84 are vertically rotatably arranged about horizontal fixed shafts 86 and 88 in the reproducing apparatus main body, and are biased by springs 90 and 92 in a direction in which they approach each other. A guide 94 for guiding the MD 10 is formed on the movable levers 82 and 84.

The side shapes of the movable levers 82 and 84 are shown in FIG.
Shown in (a) (the guide 94 is not shown). Movable lever 8
2, 84 are rotatably supported about rotary shafts 86, 88, and are urged by springs 90, 92 in directions (arrow A) approaching each other. When the MD 10 is not inserted, the movable levers 82 and 84 are locked by the fixed locking portions 96 and 98. Movable lever 82,
An inclined surface 100, a hook-shaped portion 102, a convex portion 104, and an inclined surface 106 are formed at the tip of 84.

The inclined surface 100 is for pushing and expanding the space between the movable levers 82 and 84 by contacting and sliding the both corners 22 and 24 in the longitudinal direction of the tip surface 18 of the MD 10 to be inserted. The hook-shaped portion 102 is formed at the terminal end of the inclined surface 100 here, and as shown in an enlarged view in FIG. 5B, the height h thereof, the angle θ1 with the inclined surface 100, and the top portion 108. As for the roundness, the large rounded corners 22 and 24 of the front end surface 18 of the MD 10 can be overcome and the rear end surface 1
The small rounded corners 26, 28 of 9 are formed to have a size and shape that cannot engage with each other (when they are mistakenly inserted by rotating 180 °). Note that the MD 10 is not inserted (that is, the movable levers 82, 8
4 is locked by the locking portions 96 and 98), the distance Ld between the hook-shaped portions 102 and 104 is equal to the side surface 2 of the MD 10.
It is set shorter than the length L1 of 0 and 21.

The convex portion 104, as shown in FIG.
For the MD 10 inserted in the proper posture, the recess 30,
It is formed in a size and shape that does not fit into 32 and fits into recesses 30 and 32 for MD 10 that is inserted inside out and cannot be inserted any further. Here, the hook portion 102 is formed on the front end surface of the convex portion 104. When ejecting the MD 10 stored in the magazine 44, the inclined surface 106 slides in contact with both longitudinal corners 26, 28 of the rear end surface 19 of the MD 10 to push the movable levers 82, 84 apart. It is a tentative thing. Figure 5
As shown in (b), the angle θ2 formed by the inclined surface 106 and the rear end surface 110 of the convex portion 104 is MD when the MD 10 is ejected.
The rear end face 19 of the rear end face 10 is formed with a large angle so that the two corners 26, 28 in the longitudinal direction do not engage with each other.

The fact that the disk cartridge erroneous insertion preventing device 57 having the above-mentioned configuration can prevent erroneous insertion in all directions will be described. 1) Regular Insertion The operation when inserted in a regular posture is shown by 1-1 to 1-6 in FIGS. 1-1: When the MD 10 is inserted from the slot 56, first, the two longitudinal corners 22 and 24 of the distal end surface 18 come into contact with the inclined surface 100 of the movable levers 82 and 84. 1-2: Both corners 22 and 24 of the front end surface of the MD 10 slide on the inclined surface 100 of the movable levers 82 and 84 to move the movable lever 8.
2,84 are expanded. 1-3: Both corners 22 and 24 of the front end surface of the MD 10 pass over the key-shaped portion 102 of the movable levers 82 and 84, and the convex portions 104 of the movable levers 82 and 84 are side surfaces 20, 21 of the MD 10.
Slide on.

1-4: Side surface 2 of MD10 during this sliding
Since the positions of the concave portions 30 and 32 of 0 and 21 and the convex portion 104 of the movable levers 82 and 84 are displaced laterally with respect to the sliding direction, the convex portions 104 of the movable levers 82 and 84 are concave portions 30 and 3.
It slides on the side surfaces 20 and 21 without getting stuck in 2. 1-5: When both corners 26, 28 of the rear end surface 19 of the MD 10 pass over the convex portion 104, the corners 26, 28 exert a force for closing the movable levers 82, 84 by the springs 90, 92 on the movable lever 82. The MD 10 is received in the direction of the magazine 44 by being received from the inclined surface 106 on the inside of the cartridges 84. In this way, without using a motor, etc.
The MD 10 can be inserted into the magazine 44 by utilizing the assistance of the springs 90 and 92. 1-6: When both corners 26, 28 of the rear end surface pass over the inclined surface 106, the storage in the magazine 44 is completed. In addition,
When ejecting the MD 10 from the magazine 44, the two corner portions 26, 28 of the rear end face are moved by the force pushing the MD 10 in the direction of the slot 56, and the inclined surface 10 on the inner side of the movable lever 82, 84.
MD10 comes out while pushing 6 apart.

2) Front / 90 ° rotation to the right Although the front and back are correct, the operation when the device is inserted by rotating it 90 ° clockwise is shown as 2-1 to 2-2 in FIG. 2-1: The corner 26 of the rear end surface 19 is the upper movable lever 82.
It is caught on the hook-shaped part 102. 2-2: When further pushed in in this state, the lower side is slightly slanted and stopped diagonally, and further insertion is blocked.

3) Front / 90 ° rotation to the left Although the front and back are correct, the operation when rotated 90 ° counterclockwise and inserted is shown by 3-1 to 3-2 in FIG. 3-1: The corner portion 28 of the rear end surface 19 has the lower movable lever 84.
It is caught on the hook-shaped part 102. 3-2: When it is pushed further in this state, the upper side is slightly pushed in and it is obliquely stopped, and further insertion is blocked.

4) Front / 180 ° rotation The front and back are correct, but the operation when inserted 180 ° in orientation is shown by 4-1 in FIG. 4-1: Both upper and lower corners 26, 28 of the rear end surface 19 are caught by the hook-shaped portion 102, and further insertion is prevented.

5) Back / Rotation by 0 ° Although the orientation is correct, the operation when inserted inside out is shown in FIG.
It shows with -1. 5-1: Both corners 22 and 24 of the tip surface 18 are hook-shaped portions 10
2, but the convex portion 104 has the concave portions 30 and 32.
The insertion is blocked there because it gets stuck.
When the MD 10 is pulled, the convex portion 104 can be pulled out from the concave portions 30 and 32 and the MD 10 can be pulled out.

6) Back / Rotate 90 ° Rightward The operation when the device is turned upside down and rotated 90 ° clockwise is shown as 6-1 and 6-2 in FIG. Same as 6-1: 2-1. 6-2: Same as 2-2.

7) Back / Rotate 90 ° Rightward The operation when the device is turned upside down and rotated 90 ° counterclockwise is shown in FIG. 10 as 7-1 to 7-2. Same as 7-1: 3-1. 7-2: Same as 3-2.

8) Back / Rotation by 180 ° The operation when the device is turned upside down and rotated by 180 ° is shown at 8-1 in FIG. Same as 8-1: 4-1.

[0037]

Other Embodiments In the above-mentioned embodiments, the case where the present invention is applied to the MD changer has been described. However, a changer system of accommodating an optical disk other than MD, a magneto-optical disk, a magnetic disk, etc. in a cartridge and accommodating it in a magazine It can be applied to various disc reproducing apparatuses. Further, although the number of the insertion port is one in the above embodiment, a plurality of insertion ports may be provided. In that case, a disc cartridge erroneous insertion prevention device is provided for each insertion port.

[0038]

As described above, according to the changer type disk reproducing apparatus of the first aspect, the insertion opening for inserting one cartridge is provided, and the erroneous insertion prevention device is arranged at the rear position thereof. Therefore, it is not necessary to dispose an erroneous insertion prevention device in each cartridge storage space of the magazine, and the magazine can be made compact with a simple structure.

According to the disc cartridge erroneous insertion preventing device of the second aspect, the hook-like portion is provided by utilizing the fact that the roundness of the corners at the both ends in the longitudinal direction is different between the front end face and the rear end face of the cartridge case. The large rounded corners of the front end face are inserted without engaging the hooked parts, and the small rounded corners of the rear end face are engaged with the hooked parts to prevent insertion. Can be prevented from being inserted by mistake (rotated by 180 ° and inserted). In addition, by using a recess formed on one side of the side surface of the cartridge toward the front side or the back side, a protrusion is provided on the incorrect insertion prevention device, and the protrusion is not provided for correct insertion on the front and back sides. When the cartridge is slid on the side of the cartridge without being fitted in the recess, and the convex part is fitted in the recess to prevent sliding, the cartridge can be inserted inside out. Can be prevented.

According to the disk cartridge erroneous insertion prevention device of the third aspect, the movable member is formed with an inclined surface, and the distance between the hook-shaped portions when the cartridge is not inserted is set shorter than the length of the side surface. Therefore, when the side surface is inserted from the insertion opening as the leading end, the small rounded corner at one end in the longitudinal direction of the leading end surface (that is, the side surface) can be engaged with the hook-shaped portion to prevent the insertion. . Moreover,
For proper insertion of the tip end surface, the corners of both end portions in the longitudinal direction of the tip end surface abut the inclined surface, and the movable member is expanded as the cartridge is inserted, so that the cartridge can be inserted.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, and is the MD of FIG.
It is a top view which shows the structure of the principal part of a changer.

FIG. 2 is a perspective view and a hexagonal view showing a cartridge shape of an MD.

FIG. 3 is a perspective view of an MD changer showing an embodiment of the present invention.

FIG. 4 is a perspective view showing the slot shape of FIG. 1 and a perspective view of a disk cartridge erroneous insertion prevention device arranged at a position behind it.

5 is a side view of the disc cartridge erroneous insertion prevention device of FIG. 4. FIG.

FIG. 6 is an operation explanatory view of the erroneous insertion prevention device of FIG. 5 when inserted in a normal posture.

FIG. 7 is an operation explanatory view of the disc cartridge erroneous insertion prevention device of FIG. 5 when erroneously inserted.

FIG. 8 is an operation explanatory view of the disc cartridge erroneous insertion prevention device of FIG. 5 when erroneously inserted.

9 is an operation explanatory view of the disc cartridge erroneous insertion prevention device of FIG. 5 when erroneously inserted.

FIG. 10 is an operation explanatory view of the disc cartridge erroneous insertion prevention device of FIG. 5 when erroneously inserted.

[Explanation of symbols]

 10 MD (cartridge) 16 Front surface 17 Back surface 18 Tip surface 19 Rear end surface 20,21 Side surface 22,24 Both corners in the longitudinal direction of the tip surface 26,28 Both corners in the longitudinal direction of the rear end surface 30,32 Recess 40 MD changer (disc) Playback device 42 Playback device main body 44 Magazine 50 Cartridge storage space 56 Slot (insertion slot) 57 Disc cartridge erroneous insertion prevention device 60 Drive unit 82, 84 Movable lever (movable member pair) 100 Inclined surface 102 Key-like portion 104 Convex portion

Claims (3)

[Claims] 1. An insertion opening, which is formed at a predetermined position of a reproducing apparatus main body and allows one cartridge containing one disc to be inserted into and removed from the reproducing apparatus main body, and is accommodated in the reproducing apparatus main body. A plurality of partitioned cartridge storage spaces for respectively storing one of the cartridges are formed, and any one of the plurality of cartridge storage spaces is positioned at a position behind the insertion opening, and the cartridge insertion space is inserted through the insertion opening. A magazine that is movably arranged in the playback device body so that one cartridge can be taken in and out of the storage space, and an arbitrary cartridge that is stored in the playback device body and that is stored in the magazine is received. A drive unit to be played back and a cart disposed behind the insertion opening and being inserted into the magazine through the insertion opening. Tsu di detects the whether it is inserted to a proper posture, if not normal position, the disk reproducing apparatus comprising; and a disk cartridge erroneous insertion prevention unit that prevents the insertion on the way. 2. A cartridge for accommodating one disc, comprising a front surface and a back surface which are parallel to the surface of the disc accommodated and a surface which is perpendicular to the surface of the disc. A front surface that constitutes a leading end and a rear end surface that constitutes a trailing end in the direction of insertion into the reproducing apparatus body, and a surface that is perpendicular to the surface of the accommodated disc and parallel to the direction of inserting into the reproducing apparatus body. And the left and right side surfaces constituting the front end surface, and the shape of both corners in the longitudinal direction of the front end surface is formed to be larger than the corners in the longitudinal direction of the rear end surface, and at predetermined positions in the longitudinal direction of the both side surfaces. At the position behind the insertion opening of the disc reproducing apparatus in which the cartridge having the recessed portion is inserted at a position closer to the front surface or the back surface in the lateral direction, the cover during the insertion is inserted. A disk cartridge erroneous insertion prevention device comprising a pair of movable members arranged at positions corresponding to both ends in the longitudinal direction of the leading end surface of the trench in a state of being biased in a direction of approaching each other. When the pair of movable members are in contact with the corners of both ends in the longitudinal direction of the leading end of the cartridge inserted through the insertion port, and the corners have a shape with a large roundness at both ends in the longitudinal direction of the leading end surface. Is driven by the pressing force of the insertion operation in a direction of expanding the distance against the biasing force without engaging with the corner, and the cartridge is further inserted into the back side. Allowed, when the shape of the corner portion is a shape with a small roundness of the both end portions in the longitudinal direction of the rear end surface, engage with the corner portion, lock the pressing force by the insertion operation,
A hook-shaped portion that prevents the cartridge from being inserted further into the back side, and after the tip end surface of the cartridge has passed through the hook-shaped portion, abuts both side surfaces by the urging force to insert the cartridge. Along with that, the side surface slides in the longitudinal direction, and when the cartridge is correctly inserted on the front and back sides, the position on the side surface deviates from the concave portion and the cartridge is further inserted into the back side. Tolerate
When the cartridge is inserted upside down, it fits into the recess while sliding on the side surface to prevent the cartridge from being inserted further inward and to be pulled out in the opposite direction. A device for preventing misinsertion of a disk cartridge, which is provided with a convex portion that allows it. 3. The cartridge case is formed such that the lengths in the longitudinal direction of the both side surfaces are shorter than the lengths in the longitudinal direction of the front end surface and the rear end surface, wherein the movable member pair is the cartridge. A distance between the hook-shaped portions is set shorter than the length of the side surface of the cartridge in the longitudinal direction when the cartridge is not inserted,
Further, both longitudinal end portions of the tip end face of the cartridge come into contact with each other at a position before the longitudinal end portions of the cartridge reach the hook-shaped portion, and are inclined in a direction in which the two end portions approach each other toward the back side. The device for preventing erroneous insertion of a disk cartridge according to claim 2, wherein the device has an inclined surface.