JPS6111976A - Disk cartridge - Google Patents

Abstract

PURPOSE:To prevent an upper and a lower half body from separating from each other unexpectedly owing to oscillation, shock, etc. in the upper/lower direction, by fitting a couple of locking bar members in fitting holes of the upper and lower half bodies at right angles to the upper/lower fitting direction while the upper and lower half bodies are fitted together. CONSTITUTION:The locking bar members 22 and 23 are inserted into guide holes 26a and 27a of guide parts 26 and 27 which have their fitting parts 24 and 25 formed integrally in a U shape on the internal surface 3a of the lower half body 3, and guided by guides 28-31 formed integrally on the internal surface 3a of the lower half body 3 to slide freely and linearly in the forward and backward and horizontal directions [as shown by arrows (d) and (d')] along the internal surface 3a of the lower half body 3. Then, the locking bar members 22 and 23 are slid as shown by the arrow (d) with tension coil springs 41 and 42 extended between spring lock parts 37 and 38 and lock parts 39 and 40 formed integrally on the internal surface 3a of the lower half body 3. The upper half body 2 has exactly the same constitution.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disc cassette which is attached to a disc player to record and/or play back a disc, and which is particularly suitable for separating and fitting in the vertical direction. It has upper and lower halves that can be combined at will, and a disk stored in the middle, and is used for recording,
The present invention relates to a disk cartridge in which the upper and lower halves are vertically separated during playback, and the upper and lower halves are fitted together from the top and bottom after recording and playback.

[Background technology and its problems]

Traditionally, draw disc (DRAW, DI8.0)
Writing (recording) using an optical method or magneto-optical method called
There are known discs that are capable of both high and readability (7% raw), but the recording and playback characteristics of these draw discs are significantly deteriorated due to the adhesion of dust, #1 dirt, etc. It is preferable to use it by storing it inside. However, this 4-day disk is extremely thick, incomparably to floppy disks, etc., and the cartridge that houses it is also very thick and bulky, which causes significant inconvenience when storing the cartridge. cause.

Conventionally, cartridges that house very thick disks such as draw disks, etc., have been constructed so that thin upper and lower halves can be separated vertically and fitted together freely, and the When using Ruru, the upper and lower halves are separated vertically, and the disc is suspended between the upper and lower halves, and the disc is mounted on a turntable and rotated.When not in use after recording and playback, the upper and lower halves are separated. The idea is to make the cartridge thinner by fitting it from the top and bottom and sandwiching the disk between the top and bottom halves from the top and bottom, thereby minimizing the bulk of the cartridge when it is stored. It is being

However, in order to configure the upper and lower halves of the disk cartridge to be separated and fitted in the vertical direction, the upper and lower halves are connected to each other with the upper and lower halves being fitted from the upper and lower directions, while the upper and lower halves are connected together. A coupling means is required to release the coupling when the halves are separated in the vertical direction.

By the way, as a known example of a disk cartridge in which the upper and lower halves are vertically separated and can be freely fitted together, there is
No. 6-111173.

In this known example, a plurality of annular locking claws provided perpendicularly to the upper half and an annular locking portion provided on the inner surface of the lower half constitute a coupling means, and the upper and lower halves are connected in the vertical direction. When fitting from above, use a 5tct to fit and lock the locking pawl and the locking part from above and below.

Therefore, the upper and lower halves can be separated vertically and fitted freely.
! The coupling means in this known example is such that the locking pawl and the locking portion are locked from above and below, and the locking direction of the locking pawl and the locking portion is such that the upper and lower halves are separated and fitted together. I tried the same thing in the vertical direction to match. For this reason, if vertical vibrations or shocks are applied to the disk cartridge, the vertical force generated by the vertical vibrations or shocks that attempts to separate the upper and lower halves in the vertical direction may cause the disk cartridge to become locked. The force is directly transmitted to the locking pawl and the locking portion as a force in the direction of separating the pawl from the locking portion. As a result, the locking pawl and the locking part are likely to rattle due to vertical vibrations and impact rings, and in particular, the locking pawl and the locking part may come unlatched due to a large impact. However, defects such as separation in the upper and lower halves or vertical direction were common.

Furthermore, the coupling means for locking the locking pawl and the locking portion from above and below in this known example is such that the connection is released by an operation from above and below, and it is difficult to connect the disk cartridge or the disk player. After being inserted horizontally, when the disc is lowered vertically and placed horizontally on the disc or turntable, the decoupling means is pushed up relatively from below to remove the locking pawl from the locking part. Therefore, if the disc cartridge is turned upside down, the positional relationship between the locking pawl and the locking part will be reversed, and the positional relationship between the locking pawl and the locking part will be reversed. The only thing that can be done is to break the bond. For this reason, there is a defect that makes it impossible to use the disk cartridge upside down.

[Purpose of the invention]

The present invention aims to correct the above-mentioned defects.
This is to firmly connect the disc cartridge so that it will not separate in the vertical direction, and also to allow it to be used when the disc cartridge is used upside down.

[Summary of the invention]

The present invention provides a pair of barring members that are slidable horizontally along the inner surfaces of the upper and lower halves, and fitting holes into which the pair of barring members are fitted are provided in each of the inner surfaces of the upper and lower halves. , a spring is provided for slidingly urging each of the pair of barring members in the direction of fitting the pair of barring members into the fitting hole, and the pair of barring members are fitted into the upper and lower halves in the original state in the upper and lower halves. (mif, t, This disc cartridge is characterized by:

According to the present invention configured in this way, when the upper and lower halves are fitted from the upper and lower directions, the pair of bolt members are fitted into the fitting holes from a direction perpendicular to the vertical fitting direction of the upper and lower halves. Therefore, there is no chance that the pair of bolt members will accidentally come off from the fitting hole due to the vertical force that attempts to separate the upper and lower halves in the vertical direction caused by vertical vibrations, shocks, etc. Therefore, it is possible to completely prevent the upper and lower halves from unexpectedly separating in the vertical direction due to vertical vibrations, shocks, etc.
It is possible to firmly connect the upper and lower halves.

Also, by pressing the pair of bolt members in the horizontal direction perpendicular to the upper and lower mating direction in which the upper and lower halves are mated, the pair of bolt members are slid against the spring, and the pair of bolts is fitted. Since it can be attached with a tool that is removed from the mating hole, the coupling means for the upper and lower halves can be released by pressing the disc cartridge from any direction laterally. Therefore, even when the disk cartridge is turned upside down, the upper and lower halves can be uncoupled in exactly the same way, and the disk cartridge can be used upside down.

Ru.

〔Example〕

Hereinafter, one embodiment of a disk cartridge to which the present invention is applied will be described based on the drawings. In this embodiment, writing (recording), reading, and reproduction are performed using an optical type or magneto-optical type called a draw disk (DBAW, DI80).
Both possible discs and disc cartridges are shown.

First, as shown in FIG. 1, the disk cartridge 1 is
A disk 4 is housed in a thin separator pull case consisting of upper and lower halves 2.3 that can be fitted and separated from the upper and lower directions, and is sandwiched between the upper and lower halves 2.3. Note that the upper and lower halves 2.3 are molded from synthetic resin such as AB8. Recording surfaces are formed on both the upper and lower surfaces of the disk 4, and a head insertion port 1 having a center hole 5 and a pair of left and right shutters 5a and 5b is provided in both of the volume halves 2.3. Therefore, data can be written to and read from both the upper and lower surfaces of the disk cartridge 1.

Next, as shown in FIG. 1, the front panel 10 of the disc player 9 is provided with a cartridge insertion slot 11, and inside there is a cartridge holder 12, a turntable 13, a disc clamper 14, a cartridge inserting and reading slot. Head for mosquitoes 15. A shutter opening/closing device (not shown) and the like are provided.

Next, the operation of attaching and detaching the disk cartridge 1 will be explained with reference to FIGS. 2A to 20.

First, to explain the mounting operation of the disk cartridge 1, the disk cartridge 1 is inserted horizontally from the cartridge insertion opening 11 into the cartridge holder 12 from the direction of arrow a as shown in FIG. 2A, and then turned as shown in FIG. 2B. It is inserted to a position directly above the table 13 and then stopped. Then, by utilizing the horizontal insertion operation of the disk cartridge 1 in the direction of the arrow a at this time, the shutter opening/closing device m opens the shutter 5a on the lower surface side of the disk cartridge 103.
, (ib) is opened, and the lower head insertion lower side thereof is opened. At the same time, the decoupling bin 16 is relatively inserted into the disk cartridge 1, and the upper and lower halves 2.3 are opened as described later. % - The bonded coupling means are uncoupled.

Next, after the coupling means connecting the upper and lower halves 2.3 are released, the cartridge holder 12 is vertically held while the upper half 2 is held in the position shown in FIG. 2B, as shown in FIG. 2C. By being lowered, the lower half 3 is lowered by parallel movement 2 in the direction of the arrow, and the upper and lower halves 2.3 are vertically separated. At this time, either the disk 4 is placed on the lower half 3 and is lowered together with the lower half 3, or the disk 4 is placed on the lower half 3 during its descent.
The turntable 13 is placed horizontally on a turntable 13 inserted relatively into the center hole 5 of the turntable 13. and cartridge holder 12
The disc 4 is pressed and fixed by the disc clamper 14 lowered from the center hole 5 of the upper no. It will be stopped at At this time, the head 15 is relatively inserted into the head insertion opening T of the lower half 3 and brought close to the recording surface on the lower surface side of the disk 4.

As described above, the mounting operation of the disk cartridge 1 is completed, and as shown in FIG. (1) The disk 4 is thus moved in the radial direction of the disk 4 in the direction of arrow C, and information is written or read on the recording surface of the disk 4 on the lower side.

Note that if the disk cartridge 1 is installed upside down, information will be written or read on the upper recording surface of the disk 4.

Next, the ejecting operation of the disk cartridge 1 is performed by the reverse operation of the above-mentioned loading operation, and is performed by the second B.
As shown in the figure, by vertically lifting the cartridge holder 12 together with the disk holder 14,
The lower half 3 is lifted up by parallel movement in the direction of arrow b', placed on the disk 4 or lower half 3 again, and lifted above the turntable 13. Then, by fitting the lower half 3 to the upper half 2 again, the disk 4 is again sandwiched between the upper and lower halves 2.3.

Next, when the disk cartridge 1 is pulled out from inside the cartridge holder 12 to the outside of the cassette insertion slot 11 horizontally in the direction of arrow 1 in FIG. Then, the head insertion port 6 on the lower surface side is closed again. At the same time, the uncoupling bin 16 is extracted from the disc cartridge 1, and the upper and lower halves 2.3 are coupled together by a coupling means, as will be described later.

However, this disk cartridge 1 has upper and lower halves 2
．． The disk cartridge 1 is constructed by sandwiching the disk 4 therebetween and fitting the upper and lower halves 2.3 from above and below with their inner surfaces 2, 3, and 3 facing each other. For convenience of explanation,
As before, the upper and lower halves 2.3 will be expressed separately.

That is, FIG. 3 shows the lower half 3, in which a lip 20 is integrally molded on the inner surface 38 of the lower half 3 along the center hole 5, and a lip 20 is formed concentrically at intervals on the inner surface 3a. A plurality of ribs 218 to 21 are integrally molded in a left-right asymmetrical shape. When the upper and lower halves 2.3 are fitted from above and below, the lips 21a to 211 of the upper half 2 are inserted between the lips 21a to 211 of the lower half 3, which are shown by the solid line L1, as shown by the dashed line. Including, 21 of these replies
The disk 4 is inserted between the lips 20 of the center hole 5 while its movement in the surface direction is restricted by a to 21i.

Next, details of the means for connecting the upper and lower halves 2.3 will be explained with reference to FIGS. 3 to 8.

First, the inner i of the lower half 3 [3J1 and the outer 23 of the disk 4
The rods are made of abrasion-resistant synthetic resin such as polyacetal and have a bent flat bar shape, each having a fitting portion 24, 25.

In addition, Figure 6A and! As shown in Figure 6B, the fitting part 24.2
5 are formed with slopes 24a and 25a such that the distance from the inner surface 33 of the lower half 3 becomes wider toward the tip. The bolt members 22 and 23 have their fitting portions 24 and 25.
are inserted into the guide holes 26a, 27a of the guide portions 26.27 integrally molded on the inner surface 3a of the lower half 3 in a U-shape, and the 7t guides 28-129 are integrally molded on the inner surface 3a of the lower half 3. .30.31, and is slidable linearly along the inner surface 3a of the lower half 3 in the front-rear horizontal direction (directions of arrows d and d'). The guide 28 is L-shaped as shown in FIG. 1, and is positioned above a semicircular protrusion 32 formed integrally with the upper side 28a of the guide 28 or the barring member 22. The guide 28 and the guide s26 allow the bolt member 2 to
2 is restricted from rising from the inner surface 3a of the lower half 3. Further, as shown in FIGS. 6AIW and 6B, step portions 33.34 are formed at the opposite ends 22b123b of the bolt member 22.23, respectively, and the lower part of the step portion 33 on the bolt member 22 side Ir- The stepped portion 34 on the side of the bar member 23 is recessed. Therefore, the bolt member 23 is connected to the inner surface 3 of the lower half 3 by the guide portion 27 and the stepped portion 33.
Lifting up from a is regulated. In addition, the stepped portion 33%34s of the shedding member 22,23 has a gap of 4! in the sliding direction. ■ They are placed on top of each other with their shoulders on each other.

The above-mentioned bolt member 22.23 has the bolt portion # in the recess 35.36 formed on the lower surface thereof.
Spring locking portion 37.3B integrally molded on 22.23 and spring locking portion 3L4 integrally molded on the inner surface 3a of the lower half 3
The hook is passed between 0 and 7'C tension coil spring 41.42
Accordingly, it is configured to be slidably energized in the direction of arrow d. In addition, one end 22a of the bolt member 22 is the pin insertion hole 43f of the lower half 3! One end 23a of the bar member 23 is located opposite to a stopper 44 integrally formed on the inner surface 3a of the lower half 3. When the bar members 22, 23 are moved in the direction of arrow d by the tension coil springs 41 and 42 as shown in Fig. 1tIsA, the guide portions 26 and 27 do not act as stoppers, and the tension coil springs act as shown in Fig. 5B. 41 and 42 in the direction of arrow d', and when the stopper 44 is used, it comes into contact with one end 23a of the bolt member 23.

Next, the inner surface 3 a 1" of the lower half 3, the bar member 2
A contact guide rib 46.47 is integrally molded near the fitting portion 24.25 of 2.23. The inner surface 38 of the lower half 3 is symmetrical to the guide ribs 46 and 47.
Contact guide ribs 48 and 49 are also integrally molded on the other side portion 3C.

Further, on the other side part 30, fitting parts 851.52 are integrally molded in a U-shape, and the bolt members 22'', 23 are inserted into the fitting holes 51a% and 52a of this fitting part 51.52.
The fitting portions 24 and 25 are configured to fit together.

That is, in response to the lower arm 31 constructed as described above,
The upper half 2 is constructed in exactly the same manner, and a bolt member 22.2 is also provided on one side 2b of the inner surface 2a of the upper half 2.
3 are arranged. Therefore, when the upper and lower halves 2.3 are fitted from the upper and lower directions, the bolt members 22 and 23 are arranged on the left and right sides of the disk cassette 1, respectively, as shown by the solid line and the dashed-dotted line in FIG. Become. The barring members 22 and 23 on both the left and right sides are a pair of barring members in the present invention.

As shown in Figure 5 and Figure 6A, when the upper and lower halves 2.3 are fitted from above and below, the bolt members 22 and 23 that slide on the inner surface 3a of the lower half 3 are fitted together. The portions 24 and 25 are fitted into the fitting holes 51a and 52a of the fitted portions 51 and 52 of the upper part 2. In addition, upper and lower half 2
Recesses 60a to 60d are formed on the inner surface 2''s3a of %3 for escape of the guide portion 26.27 and the fitted portion 51.52.At this time, as shown in FIG. In the vicinity of the joining part 24.25, the contact guide rib 46% of the lower half 3 and the contact guide rib 48, 4 of the upper half 2
9 are configured to abut each other from above and below. 7t% fitting portion 24.25 and fitting hole 51M, 52
Retaliation of the fitting part with a, by the side.

The outer peripheral edge of one side 3b of the lower half 3, which is located on the opposite side of the abutment guide ribs 46.47 with the fitting portion in between, is formed into an abutment guide edge 53.54 that is formed into a flat upper edge. ing. Abutment guide edges 55 and 56 are also formed on the outer circumferential edge of the other side portion 30 of the lower half 3 to be left and right symmetrical to the abutment guide edges 53 and 54, and the upper ends thereof are formed flat. In addition, the contact guide edge 53.54.55.56
A plurality of convex portions 5T are formed on the negative side portion 3b side and a plurality of concave portions 58 are formed on the other side portion 30 side, and when the upper and lower halves 2.3 are fitted from the upper and lower directions, , the plurality of convex portions 5T and the concave portions 58 are curved so that the convex portions and the concave portions 58 are fitted with each other as shown in FIG. Furthermore, the inner surface 3a of the lower half 3
A bottle 61 having a tapered shape 61.1 on the outer periphery of the upper end is integrally molded on one side 3b, and symmetrically with this bottle 61, the other side 30 of the inner surface 3a of the lower half 3 has a A boss hole 62 having a tapered surface 62a is integrally formed on the inner circumference of the upper end. Then, when the upper and lower halves 2.3 are fitted from the vertical direction, L1 is first fitted to the bottle 61 and the boss hole 62 from the vertical direction, and the upper and lower halves 2.3 are positioned with respect to each other. I'm here.

The disk cartridge 1 is constructed as described above.

When assembling the bolt members 22 and 23 to the lower half 3, first attach the tension coil spring 4 to the bolt member 22.
1, and the fitting part 24 of this bar member 22 and the protrusion 3
2 and the inside of the guide hole 6a of the guide portion 26 and the guide 2, respectively.
Next, the bolt member 2 is inserted into the lower part of the upper side 28a of 8.
A tension coil spring 42 is applied to 3, and this bar member 23 is
The fitting part 25 is inserted into the guide hole 7a of the guide part 2T, and the step part 34 is pushed under the step part 33 of the bolt member 22. At this time, one end 23a of the bolt member 23 is bent as shown by the dashed line in FIG. 6B, while the stopper 44 is pushed forward.

Next, the coupling and uncoupling of the upper and lower halves 2.3 in the disk cartridge constructed as described above will be explained.

First, as shown in FIGS. 5A and 6A, when the disk cartridge 1 is not in use, it is fitted from above and below with the upper and lower halves 2.3 or the disk 4 sandwiched between them.
The bar member 22.23 is biased to slide in the direction of arrow d by a tension coil spring 41.42, and the fitting portion 24.2
5 or the fitting hole 51a of the fitted portion 51.52 of the upper half 2,
52a.

However, when levering, the fitting portions 24 of the bar members 22 and 23
．． 25 is fitted into the joint holes 51a and 52a from a direction perpendicular to the vertical fitting direction of -72 and 3, so that the upper and lower halves 2. The vertical force F that tries to separate 3 in the vertical direction
Depending on the tension of cann@member 22.23; il spring 4
1. There is no possibility of sliding in the direction of arrow d' against 42.

Therefore, due to vibrations and impacts in the vertical direction, 22% of the fitting parts 24 and 25 of the bolt members 23 are damaged by the fitting holes 51a and 52.
It will never come off in the direction of arrow d from a, and it is completely prevented that the upper and lower halves 2 and 3 will be unexpectedly separated in the vertical direction due to vibrations or impacts in the vertical direction.

Furthermore, by fitting the fitting portions 24.25 of the bolt members 22.23 into the fitting holes 51a, 52a from the horizontal direction, there is no need to take a large fitting allowance in the vertical direction, so the upper and lower halves The space S required to connect the disk cartridges 2 and 3 from above and below can be extremely small, and as a result, the thickness H of the disk cartridge 1 is greatly reduced.

By the way, the upper and lower half 2 of this kind of disk cartridge
．． 3 is due to the dimensional tolerance of the molding, so when the upper and lower halves 2.3 are fitted from above and below, it is difficult to completely fit them together.As a result, the upper and lower halves 2. When the upper and lower halves 1-72.3 are fitted together from above and below, the state of the upper and lower halves 1-72.3 is not constant, and gaps are likely to form at the abutting portions of the upper and lower halves 2 and 3.

However, according to the disk cartridge 1# of this embodiment, it is impossible! When the upper and lower halves 2.3 are connected to each other from above and below using the members 22.23, dimensional tolerances can be absorbed and the upper and lower halves 2.3 can be firmly attached. That is, when the bar member 22.23 is slid in the direction of arrow d by the tension coil springs 41, 42, the fitted portion 51 of the upper half 2 is guided by the diagonal tii 2411, 25a of the fitting portion 24.25. , it is strongly attracted to the 52 part or the lower half 3 side. At this time, as shown in FIG. 8, two contact guide ribs 46, 47, 48, 49 of the upper and lower halves 2.3 are located near both sides of the fitting portion of the upper and lower halves 2, 3, The guide edges 53%, 54, 55, and 56 of the upper and lower halves 2.3 are brought into close contact with each other from above and below. This time again! ! As shown in 7@, the outer peripheral edge line convex portions 5T and the concave portions 58 of the upper and lower halves 2%3 are engaged with each other from the vertical direction. Therefore, even if there is a dimensional tolerance between the upper and lower halves 2.3, the upper and lower halves 2.3 will have contact guide lips 46, 47, 48.
, 49 and the abutting guide edges 53%, 54, 55, 56 are completely brought into close contact from above and below. At this time, even if there is a slight gap between the outer peripheral edges of the upper and lower halves 2.3 due to the uneven fitting parts, the gap is not noticeable and dirt and
) etc. are also difficult to invade.

Note that the bar members 22 and 23 are divided into two parts, and each can slide independently with a gap l at the other end 22b and 23b. Or, even if 25 or 25 is completely fitted into the fitting hole 51a or 52a and the sliding movement of one bar member 22 or 23 is completed, the other bar member 22
Or 23 is the fitting part 24 or 25 or the fitting hole 51a or 52
(b) Therefore, each bar member 22.23 completely fits into the upper and lower halves 2.3 at two locations, i.e., the four locations between the upper and lower halves 2.3, respectively. From the direction, the upper and lower halves are 2%
3 can be completely connected from above and below.

Next, when the stone is inserted into the disk cartridge 1 or the disk player 9 as described above, the uncoupling bottle 16 of the disk player 9 is inserted through the bottle insertion hole 43, as shown in FIGS. 5B and 6B. Then, one end 22a of the bar member 22 is pressed, and as a result, the bar member 22
．． 23 is slid in the direction of arrow d' against the tension coil springs 41, 42. Then, the fitting portions 24.25 of the bolt members 22.23 are disengaged from the fitting holes 51a, 52a, and the connection of the upper and lower halves 2.3 in the vertically fitted state is released. Thereafter, as described above, the upper and lower halves 2.3 are separated in the vertical direction, and information is written or read on the lower recording surface of the disk 4.

Note that the upper half 2 is located on the other side of the disc cartridge 1.
The barring members 22 and 23 disposed in the upper and lower halves 22 and 23 are simultaneously operated in exactly the same manner, and the connections at four locations between the upper and lower halves 2% and 3 are simultaneously released. Then, in the horizontal direction perpendicular to the vertical direction in which the upper and lower halves 2.3 are fitted, the fitting between the fitting portions 24 and 25 of the latticeless member 22.23 and the fitting hole 51a52a is released. , even if the disk cartridge 1 is turned upside down, the upper and lower half 2
．． It is possible to release the bonds in step 3 in exactly the same way.

Next, as described above, when the upper and lower halves 2.3 are fitted from the vertical direction in the disc player 9, first, the bottle 61 and the boss hole 62 are fitted, and the upper and lower halves 2% 3 are fitted from the vertical direction. They can be precisely positioned with respect to each other. Furthermore, at this time,
The bottle 61 and the boss hole 62 are mutually tapered m61a, 6
2aR: Therefore, it can be guided accurately. And upper and lower half 2
．． 3 are fitted from above and below, the pressure on the bolt members 22 and 23 by the uncoupling pin 16 is released.

Then, as shown in FIGS. 5A and 6A, the bar member 22.23 is moved by the arrow d by the tension coil spring 41.42.
The fitting portion 24.25 of the bolt member 22.23 is slid in the direction of the fitting hole 51a.

52a. Then, the upper and lower halves 2.3 are again connected to each other from the upper and lower directions.

The embodiment of the disk cartridge of the present invention has been described above, but it is interesting to note that the upper and lower halves 2.3 of the present embodiment have exactly the same structure, and the bar members 22, 23
As the initial injection, the upper and lower halves 2.3 are connected and uncoupled by the fitting holes 51a, 152a1 and other related structures, or both the upper and lower halves,
Since they have exactly the same structure and the same operation, their balance lines are extremely good and their reliability is extremely high.

Moreover, since only one type of bolt members 22, 23 and halves need to be manufactured, their accuracy is made uniform, and the number of assembly steps is significantly reduced, making the disk cartridge 1 extremely It can be provided at low cost.

Although the above has been described with reference to one embodiment of the present invention, various effective modifications can be made based on the technical idea of the present invention.

For example, in the embodiment, the upper and lower halves are configured to have exactly the same shape, and the bolt member is placed on one side of the seventh half, and by fitting these upper and lower halves from above and below, a pair of bolt members are formed on the inner surfaces of the upper and lower halves. Is it configured to provide
The upper and lower halves may have different shapes and a bar member may be disposed in each, or a pair of bar members may be disposed in either one of the upper and lower halves.

In addition, in this embodiment, the pair of left and right bar members are each divided into two parts in the longitudinal direction, but they may be constructed in one piece. Various other modifications are also possible.

[Application example]

The present invention is not limited to disc cartridges that house draw discs, but can be applied to disc cartridges for various uses that house various types of recording and/or playback discs.

[Effects of the Invention] As described above, according to the disk cartridge of the present invention,
When the top and bottom halves are fitted from the top and bottom directions, there is no chance that the top and bottom parts will accidentally separate and leak due to vertical vibration or impact xJIA, etc.
Since the upper and lower halves can be firmly connected, the handling safety of the disk cartridge is extremely high and it is very easy to handle.

Furthermore, even if the disk cartridge is turned upside down, the upper and lower halves can be uncoupled in exactly the same way, so recording surfaces are formed on both the upper and lower sides. Even when the disk is selectively inverted and inserted into a disk player to selectively record and/or reproduce both sides of the disk, the disk player may be provided with a head in one of the upper and lower rows.

Furthermore, since the disc cartridge can be made much thinner, the space factor can be improved when the disc cartridge is stored in a stocker of a disc file device.

[Brief explanation of drawings]

Figure 1 is a perspective view of a disc cartridge and a disc player, and Figures 2A to 20 show an example of a disc cartridge to which the present invention is applied. 3 is a plan view of the lower half, FIG. 4 is a partially cutaway perspective view of the same line as above, and FIGS. 5A and 5B are the state of coupling and uncoupling of the upper and lower halves by the bolt member. A plan view of the main parts explaining Prisoners 6A and 6B
The figures are respectively the line 5A VIA-VIA and the line VIB 5B.
-■ A cross-sectional view taken along the line B, Figure 7 is an enlarged cross-sectional view taken along the line ■-■ in Figure 5A, and Figure 8 is an enlarged cross-sectional view taken along the line ■-■ in Figure 5A. Also, in the symbols used in the drawings, 1... River... River... Disk cartridge 2...
・・・・・・・・・River・・・Upper half 2a・・・・・・・
・・・・・・・・・Inner side 3 ・・・・・・・・・・・・・・・
・・Lower half 3a・・・・・・・・・・・Inner surface 4・・・・・・・River・・River Disc 22h23・・
......Bar members 24, 25...
...Mating part 41.42...Tension coil spring 51.5
2...Matched parts 51a, 52a...
Use the fitting hole.

Claims (1)

[Claims] It has upper and lower halves that can be separated and fitted in the vertical direction, and a disk stored in the middle thereof, and the upper and lower halves can be separated vertically during recording and playback, and the upper and lower halves can be separated after recording and playback. In a disk cartridge adapted to be fitted from above and below, a pair of bolt members are provided to be slidable horizontally along the inner surfaces of the upper and lower halves, respectively, and a fitting hole into which the pair of bolt members are fitted is provided. are provided on each of the inner surfaces of the upper and lower halves, and a spring is provided that slides and biases the pair of barring members in the direction of fitting each into the fitting hole, and when the upper and lower halves are fitted from above and below, The pair of barring members are slid by the spring, and the pair of barring members are fitted into the fitting hole from a direction perpendicular to the vertical fitting direction of the upper and lower halves to connect the upper and lower halves to each other. A disk cartridge characterized in that it is configured such that it can be loaded.