JP2528583Y2 - Storage case for magnetic tape cassette - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic tape cassette storage case, and more particularly to an improvement of a magnetic tape cassette storage case used for storing an audio magnetic tape cassette.

[0002]

2. Description of the Related Art A magnetic tape cassette used for audio or the like is usually stored in a storage case for a magnetic tape cassette made of plastic (hereinafter, simply referred to as a "casing storage case"). The cassette storage case includes a cassette front opening through which a magnetic head or the like is inserted when the magnetic tape cassette (hereinafter, referred to as a “cassette”) is loaded in a recording / reproducing apparatus, and extends across the front opening. The magnetic tape mounted on the front opening prevents dust from entering the cassette from the front opening, and protects the magnetic tape located at the front opening and the entire cassette. It is used for the purpose of protecting.

FIG. 11 shows a basic structure of a conventional cassette storage case. The cassette storage case 31 includes a lid portion 32 having a pocket 34 into which the front opening portion of the cassette 20 is inserted, and a casing portion 35 having a pair of anti-rotation protrusions 7 that enter the shaft insertion hole 22 of the cassette 20. I have. Then, the cassette storage case 31
The casing 35 and the lid 32 are connected to each other by fitting a support shaft protruding from the left and right inner sides of the casing 35 with a hole penetrating through an end side wall of the pocket 34. Can be opened and closed like this. In the cassette storage case 31, the gap between the wall portions 33 and 36 facing the front and back surfaces of the cassette 20 has a gap corresponding to the thickness of the cassette thickness increasing portion 21 forming the front opening of the cassette 20. It is configured. For this reason, the cassette storage case 31 is configured such that the thickness L1 is considerably larger than the cassette thickness L2 excluding the cassette thickness increasing portion 21. Therefore, the cassette storage case 31 is
A considerably larger storage space is required as compared to the case where 0 is stored naked.

[0004] For this reason, a general user can use the cassette 2
When storing 0 in a limited space, for example, when storing as much as possible in a console box of a car, the cassette storage case 31 may not be stored. However, if the cassette 20 is stored without being stored in the cassette storage case 31,
There is a problem that dust easily enters the cassette, which promotes the deterioration of the recording / reproducing characteristics of the magnetic tape, and that the magnetic tape is directly damaged by a drop or the like and is damaged.

In order to solve the above problems, the present applicant has proposed thin cassette storage cases (Japanese Utility Model Application Laid-Open Nos. 60-163279 and 63-52782). This thin cassette storage case includes a cassette which is housed in the opposite direction to the conventional case, the cassette thickness increasing portion is positioned on the open side of the cassette storage case, and a concave portion which receives the cassette thickness increasing portion. Are formed on the upper and lower wall surfaces of the case.

For example, a description will be given of an improved cassette storage case described in Japanese Utility Model Laid-Open Publication No. 63-52782. As shown in FIG. The casing 12 and the casing 12 are pivotally connected to each other in the same manner as in a conventional cassette storage case.
Walls 13 and 16 widely facing the front and back surfaces of cassette 5
Are formed on the open side thereof for receiving the cassette thickness increasing portion 21. The recesses 18 are formed inside the case so as to face each other, and have a depth and a shape for receiving the cassette thickness increasing portion 21.

[0007] Thus, the cassette storage case 1
1 can be configured such that the distance between the wall portion 13 and the wall portion 16 excluding the concave portions 18 and 18 is extremely larger than the thickness l2 other than the cassette thickness increasing portion 21. Can be considerably thinner than the case. Therefore, the storage space has been reduced, and the usability as a portable device has been greatly improved. However, examination by the present inventors has revealed that there is a problem to be further improved.

[0008]

That is, magnetic tape cassettes containing classical music and the like have been marketed in recent years. In this case, if the music is long, it is divided into two or more cassettes and recorded as a set as if it were recorded on two or more record boards. However, the conventional cassette storage case can store only one cassette. Therefore, a general user needs to manage one set of tapes so as not to be separated, which is very inconvenient. In particular, language learning tapes and the like must be managed according to the learning program, and in reality, a special management box is used.

As described above, in the related art, a case for housing a plurality of cassettes, that is, two or more cassettes at the same time, has been hardly considered to be thin, and there was no technical idea. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cassette storage case which stores a plurality of cassettes and is thin and easy to store.

[0010]

According to the present invention, there is provided a magnetic tape cassette comprising a lid having a pocket for accommodating an end of the magnetic tape cassette, and a casing having a rotation preventing projection. In the storage case for the magnetic tape cassette, it is not large enough to insert the side end portion of the magnetic tape cassette in which the pocket portions are overlapped in the front and rear,
A recess for accommodating the increased thickness portion of one magnetic tape cassette superposed on the wall surface of the lid portion is formed, and a recess portion for accommodating the increased thickness portion of the other magnetic tape cassette superimposed on the wall surface of the casing portion. This can be achieved by a magnetic tape cassette storage case, wherein the magnetic tape cassette storage case is provided with anti-rotation projections that are formed and inserted into shaft insertion holes of the two magnetic tape cassettes that are partially communicated with each other.

That is, in the magnetic tape cassette storage case having the above-described configuration, the cassette-side end is inserted into the pocket portion in a state where the magnetic tape cassettes are directly superimposed on the front and back, and further, the respective thickness increasing portions are provided. Can be stored in the concave portion, so that the storage case becomes thin despite the cassettes being stored in an overlapping manner. Further, when the shaft insertion holes of the superposed magnetic tape cassettes are partially connected, the slack of the magnetic tape of the bidirectional cassette can be prevented at the same time by the rotation preventing projection formed so that the communication portion can be inserted. Further, in the configuration in which the positioning ribs are provided to make the shaft insertion holes of the superposed magnetic tape cassettes communicate with each other, it is possible to prevent the magnetic tape from sagging or the like by the ordinary rotation preventing projection.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment will be described. 1 is a perspective view of a cassette storage case, FIG. 2 is a perspective view showing a cassette storage state, FIG. 3 is a cross-sectional view of a main part, and FIG. 4 is a plan view of the main part. This embodiment is characterized in that two cassettes are stacked one on top of the other and housed in the vertical direction, and the whole is made thin. The cassette storage case 1 has a pocket 4 formed in a space in which the rear end portion and the front end portion of the two cassettes 20, in other words, the thickened portion 21 can be simultaneously inserted in a stacked state.
And a casing 3 having a pair of anti-rotation projections 42 which enter the shaft insertion holes 22 of the stacked cassette 20. In addition, the rotation prevention protrusion 42 is formed on the wall 8 that forms the casing 3.

Then, the cassette storage case 1 comprises:
The casing portion 3 and the lid portion 2 are fitted by fitting a support shaft 17 projecting inside the cassette front-rear direction side wall 9 of the casing portion 3 into a hole provided in an end side wall of the pocket 4. And can be opened and closed like a door in the width direction of the case. Further, a recess 5a is formed in the wall 6 of the lid 2 so as to receive the cassette thickness increasing portion 21 of one of the cassettes 20. At the end of the wall 8 of the casing 3, a second recess 5 b for receiving the thickness-increasing portion 21 of the other cassette 20 is formed. That is, case 1
Is closed, the two concave portions 5a and 5b are formed so as to be positioned diagonally without facing each other. The concave portion 5a,
5b, when two cases 20 are received in a stacked state,
This is for receiving the respective thickness increasing portions 21 in opposite directions, and the concave portion 5a corresponds to a first concave portion.
b corresponds to the second concave portion.

When the two cassettes 20 are stored in the cassette storage case 1, the rear end portions of the two cassettes 20 and the thickness increasing portion 21 are overlapped with each other as shown in FIG. And into pocket 4.
As a result, the thickness increasing portion 21 of one cassette 20 is fitted into the concave portion 5a, and the thickness increasing portion 21 of the other cassette 20 is exposed, but by rotating the casing 3, the other cassette 20 is rotated. Thickness increasing portion 21 of concave portion 5
b, and the storage of the two cassettes 20 is completed.

The shaft insertion hole 22 is not formed on the center line of the cassette 20 in the width direction, but is biased toward the rear end. For this reason, if the two cassettes 20 are stacked so that their periphery, in other words, the outer shell completely coincides with each other, only a part of the shaft insertion hole 22 communicates as shown in FIG. The projection 42 cannot be inserted as it is.

Therefore, in this embodiment, in order to insert the communicating portion of the shaft insertion hole 22, the anti-rotation projection 42 is formed in a thin tongue shape as shown in each figure. Therefore, 2
Even if the two cassettes 20 are completely overlapped with each other, the rotation preventing projection 42 passes through the communicating portion of the shaft insertion hole 22 as shown in FIGS. In the cassette storage case 1 having the above-described configuration, both the outer shape and the volume are significantly reduced as compared with the conventional cassette storage case. These will be described later in detail.

Next, a second embodiment of the present invention will be described with reference to FIGS. Note that this embodiment and the first
The difference from this embodiment is that a rib for positioning the shaft insertion hole 22 is provided on the casing 3. Therefore, the same reference numerals are given to the same members as described above, and the description is omitted.

That is, although the structure of the lid 2 is the same as described above,
The width dimension W is made large according to the dimension of a rib 45 described later. The casing part 3 is provided with a rib 45 as a positioning member for communicating with the shaft insertion hole 22 of the superposed cassette 20 at a position facing the recess 5a in a state of being integrally closed with the lid part 2. Further, the pair of anti-rotation protrusions 42 are not in the shape of the tongue, but have substantially the same shape as the conventional one. When storing the cassette 20, the first cassette 20, that is, the lower thickness-increasing portion 21 of the cassette 20 shown in FIG. 6, is inserted into the pocket 4 so as to be received in the recess 5a. In this state, a gap for inserting the side end of the cassette 20 is formed between the upper surface of the lower cassette 20 and the inner surface of the frame wall 43 constituting the pocket 4. When storing the upper cassette 20, the cassette is inserted into the gap from the side end.

Therefore, when the two cassettes 20 are stacked and inserted, the thickened portion 21 of the upper cassette 20 protrudes from the rear end of the lower cassette 20 as shown in FIG. . However, since the side end of the upper cassette 20 is positioned by the pocket 4, the upper cassette 20 does not protrude, and the casing 3
Is protruding enough to close it. As a result, the two cassettes 20 are stored in a stacked state in one cassette storage case 1, and by closing the lid 3, the rotation preventing projection 42 is inserted through the insertion hole 22 of each cassette 20, Complete casing is done.

FIGS. 7 and 8 are cross-sectional views of essential parts showing the storage state. The ribs 45 allow the insertion holes 22 of the respective cassettes 20 to communicate with each other. 22 are shown inserted simultaneously.

Here, an example of the size of the cassette storage case 1 will be described. The width w of the cassette storage case 1 is longer than the conventional case by the size of the rib 45 by 5, 8 mm. Was. However, the thickness L2 could be made about 6 mm smaller than the thickness of two conventional cases by forming the recesses 5a and 5b. The volume of the cassette storage case 1 could be reduced to about 1.53 times the volume of a conventional cassette containing one cassette, despite the fact that it contained two cassettes.

That is, the two cassettes 20 can be accommodated by about 53% more than the volume of the case containing one cassette. For this reason, the storage space for the two cassettes is reduced, and the related cassettes 20 can be stored collectively, facilitating storage and management. When the cassette storage case 1 is opened and the cassette 20 is taken out, the two cassettes 20 are stepped so to speak, so that even if only one cassette 20 is taken out, the take-out operation is facilitated. . Although the reduction ratio of the thickness and the volume of the cassette storage case 1 of the second embodiment shown in FIG. 5 is as described above, the cassette storage case 1 of the first embodiment shown in FIG. Is smaller than that of the second embodiment by the amount that the rib 45 is not provided.

Next, a third embodiment will be described with reference to FIG. The difference between the present embodiment and the second embodiment is that the rib 45 is provided in the pocket portion 4. That is, the rib 45 is provided inside the side plate 43 constituting the pocket 4 and at the end where the recess 5a is formed. According to this structure, before closing the lid 2 and the casing 3, in other words, at the stage shown in FIG.
Can be positioned. Therefore, as described in the second embodiment, the shaft insertion holes 22 of the two cassettes communicate with each other, and the rotation prevention protrusion 42 having the conventional structure can be inserted. In addition, the same effect as described above can be obtained for miniaturization of the entire case 1.

According to each of the above-described embodiments, the side end of the cassette 20 is located near the concave portion 41 to which a finger is put when opening the cassette storage case 1. Therefore,
When the case 1 is opened, the opening and closing operation can be performed without bringing a finger into contact with a magnetic tape (not shown) facing the opening 23 or the like. For this reason, tape dirt and tape slack due to finger contact can be prevented beforehand, and cassette storage work can be easily performed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible. For example, the rib 45 may be formed at the position P shown in FIGS. According to this configuration, two cassettes 20 can be positioned simultaneously.

[0026]

As described above, the cassette storage case according to the present invention has a lid wall portion formed with a pocket for inserting a side end portion of a cassette stacked upside down,
A concave portion for receiving the thickened portion of the superposed cassette is formed in the casing portion, and a rotation preventing projection is provided to pass through a partially communicating portion of the shaft insertion hole of the superimposed cassette; Positioning ribs for communicating the holes are provided. Therefore, a plurality of cassettes can be stacked, that is, stacked in a single cassette storage case, so that even those having a long recording time can be stored together, and related cassettes can be stored individually. Usability is improved as compared with the case of performing. In addition, since the recesses for receiving the increased thickness portions of the plurality of cassettes are formed, the thickness of the entire cassette storage case can be reduced, and the storage volume can be reduced. Further, since the anti-rotation projection can be inserted into the shaft insertion hole regardless of whether the cassettes are overlapped, it is possible to prevent the magnetic tape from sagging.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cassette storage case according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a cassette storage state.

FIG. 3 is a sectional view of a main part showing a cassette storage state.

FIG. 4 is a plan view of a main part showing a cassette storage state.

FIG. 5 is a perspective view of a cassette storage case showing a second embodiment.

FIG. 6 is a perspective view showing a cassette storage state.

FIG. 7 is a cross-sectional view of a main part showing a cassette storage state.

FIG. 8 is a plan view of a main part showing a cassette storage case.

FIG. 9 is a perspective view of a cassette storage case showing a third embodiment.

FIG. 10 is a perspective view showing a conventional cassette storage case.

FIG. 11 is a perspective view showing a conventional cassette storage case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage case for cassettes 2 Lid part, 3 Casing part 4 Pocket 5a, 5b Concave part 6, 8 Wall part 20 Cassette 21 Thickness increasing part 22 Insertion hole 23 Opening 42 Rotation prevention projection 45 Rib

Claims (2)

(57) [Scope of request for utility model registration] 1. A magnetic tape cassette storage case in which a lid having a pocket for accommodating an end of a magnetic tape cassette and a casing having a rotation preventing projection are rotatably pivotally connected. The recess is formed to have a size capable of inserting the side end portion of the magnetic tape cassette overlapped in the front-rear direction, and a recess for accommodating the increased thickness portion of one magnetic tape cassette overlapped on the wall surface of the lid portion. A rotation preventing projection that forms a recess for accommodating the thickened portion of the other magnetic tape cassette overlapped on the wall surface of the casing portion and that is inserted into the shaft insertion holes of the two magnetic tape cassettes that are partially in communication with each other. A storage case for a magnetic tape cassette, comprising: 2. A positioning rib for positioning a cassette in at least one of the lid and the casing so as to communicate the shaft insertion holes of the magnetic tape cassettes that are overlapped with each other. A magnetic tape cassette according to claim 1.