JPH0669188U - Magnetic tape cassette storage case - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a magnetic tape cassette storage case capable of preventing the case cover from being opened accidentally even when the storage case receives an impact load. [Structure] The convex portion 2 is formed on the inner surface of the sliding contact wall 20 of the case cover 16.
2 is formed, and a concave portion 24 that engages with the convex portion 22 when the case cover 16 is closed is formed on the outer surface of the peripheral wall 18 of the case body 14. This prevents the case cover 16 once closed from being inadvertently opened due to the engagement between the convex portion 22 and the concave portion 24 in a normal use state. Further, in the upper portion of the peripheral wall 18 above the recess 24, the recess 2
4 and a recess 26 is formed at a predetermined distance from each other to form a double lock structure. As a result, even if the storage case 10 receives an impact load due to falling onto the floor or the like and the engagement between the convex portion 22 and the concave portion 24 is disengaged, the convex portion 22 and the concave portion 26 are engaged with each other. The case cover 16 is prevented from being opened accidentally.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case for housing a magnetic tape cassette.

[0002]

[Prior art]

 Magnetic tape cassettes such as video tapes and audio tapes are generally stored in a case when not in use in order to protect the tape from dust and the like. The storage case includes a case body having a magnetic tape cassette storage portion, and a case cover hinged to the case body so as to be openable and closable. The case body has a peripheral wall that surrounds at least a part of the periphery of the magnetic tape cassette housing portion, and the case cover has a sliding contact that makes sliding contact with the peripheral wall of the case body when the case cover is closed. Has a wall.

Further, as disclosed in, for example, Japanese Utility Model Laid-Open Nos. 4-135589, 4-135911, and 4-1111, the peripheral wall and sliding contact of the storage case are described. A convex part is formed on one of the walls, and a concave part is formed on the other side that engages with the convex part when the case cover is closed. As a result, the case cover that has been closed once will open inadvertently. It is designed to prevent

[0004]

[Problems to be solved by the device]

 In the conventional storage case described above, due to the engagement between the convex portion and the concave portion, the case cover does not inadvertently open in a normal use state.For example, the storage case is dropped on the floor. When the storage case receives an impact load, such as when the storage case has fallen off, the engagement may be disengaged. In such a case, the case cover opens and the magnetic tape cassette is removed from the storage case. There was a problem that it could be thrown out and damage the magnetic tape cassette.

The present invention has been made in view of the above circumstances, and prevents the case cover from being opened accidentally even when the storage case receives an impact load. It is an object of the present invention to provide a magnetic tape cassette storage case that can be manufactured.

[0006]

[Means for Solving the Problems]

 The magnetic tape cassette storage case according to the present invention has a multiple lock structure by forming not only one recess but two or more recesses in a predetermined arrangement so as to achieve the above-mentioned purpose.

That is, as described in claim 1, it comprises a case body having a magnetic tape cassette housing portion, and a case cover hinged to the case body so as to be openable and closable. The case cover has a peripheral wall that surrounds at least a part of the periphery of the magnetic tape cassette housing portion, and the case cover has a sliding contact wall that is in sliding contact with the peripheral wall of the case body when the case cover is closed. In a magnetic tape cassette storage case, wherein one of the sliding contact walls has a convex portion and the other has a concave portion that engages with the convex portion when the case cover is closed, the concave portion is formed. At least one recess is formed in series on the wall at a predetermined interval with the recess in the direction in which the peripheral wall and the sliding contact wall are in sliding contact with each other. The one in which the features.

The above-mentioned "at least one recess is formed in series at a predetermined interval from the recess" means that "one recess is formed at a predetermined interval from the recess". It is intended to include a mode in which "two or more recesses are formed in series at different intervals with respect to the recess".

Each of the “recesses” may be formed by forming a part of the wall in a recessed shape, or may be a hole penetrating the wall.

The above-mentioned “projection portion” may be single or plural. When using a plurality of recesses, it is preferable to set the number of recesses equal to or less than the number of recesses so that all the protrusions can engage with the recesses when the case cover is closed.

The height of the wall in which the recesses are formed in the recess forming portion, the pitch between the recesses, the depth of the recesses, etc. are not limited to specific dimensional values, but for example, For example, as described in claim 2, the height of the wall can be set to about 10 mm, the pitch can be set to about 4 mm, and the depth can be set to about 0.5 mm.

[0012]

[Function and effect of device]

 As shown in the above configuration, in the magnetic tape cassette storage case according to the present invention, the convex portion is formed on one of the peripheral wall of the case body and the sliding contact wall of the case cover, and the case cover is closed on the other side. At this time, since the concave portion that engages with the convex portion is formed, in a normal use state, the case cover that is once closed does not accidentally open due to the engagement between the convex portion and the concave portion.

Further, in the present invention, a predetermined space is provided between the peripheral wall and the sliding contact wall in a direction in which the peripheral wall and the sliding contact wall are slidably contacted with the wall in which the recessed portion (hereinafter referred to as “first recess”) is formed. Since at least one concave portion (hereinafter referred to as “second concave portion, third concave portion, ...”) is formed in series, the storage case receives an impact load due to being dropped on the floor, etc. Even if the first portion and the first concave portion are disengaged from each other, the convex portion and the second concave portion (or the third concave portion) are engaged with each other, so that the case cover is opened accidentally. There is no end.

As described above, according to the present invention, by adopting the multiple lock structure, it is possible to prevent the case cover from being opened accidentally even when the storage case receives an impact load. it can. Therefore, it is possible to prevent the situation in which the magnetic tape cassette is thrown out of the storage case and the magnetic tape cassette is damaged due to the opening of the case cover.

[0015]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a magnetic tape cassette storage case according to the present invention.

The magnetic tape cassette storage case 10 is a storage case for an 8 mm video tape cassette, and includes a case main body 14 having a magnetic tape cassette storage section 12 for storing the 8 mm video tape cassette, and the case main body 14 And a case cover 16 integrally formed with the case body 14 and hinged to the case body 14 so as to be openable and closable.

The case body 14 has a peripheral wall 18 that surrounds the magnetic tape cassette housing portion 12. The peripheral wall 18 is composed of a high part and a low part, but the four corner parts are high. On the other hand, the case cover 16 has a sliding contact wall 20 that is in sliding contact with the peripheral wall 18 of the case body 14 when the case cover 16 is closed. The sliding contact wall 20 is formed at the same height on the other three sides (the front side and the left and right sides) except for one side that is hinged, and the inner surface of the sliding contact wall 20 is the same as that of the peripheral wall 18. It is designed to be in sliding contact with the outer surface.

On the inner surfaces of the left and right side walls of the sliding contact wall 20 of the case cover 16, convex portions 22 are formed at two locations in the vicinity of the corner portions on the anti-hinge coupling side thereof. Further, on the outer surfaces of the left and right side walls of the peripheral wall 18 of the case body 14, recesses 24 that engage with the projections 22 when the case cover 16 is closed are formed. The engagement between the convex portions 22 and the concave portions 24 prevents the once-closed case cover 16 from being opened accidentally.

Further, recesses 26 are formed in the peripheral wall 18 of the case body 14 above the recesses 24 at predetermined intervals with respect to the recesses 24. That is, on the outer surfaces of the left and right side walls of the peripheral wall 18, the recesses 24 and the recesses 26 are formed in series in the direction in which the peripheral wall 18 and the sliding contact wall 20 are in sliding contact with each other.

The height of the peripheral wall 18 at the portions where the recesses 24 and 26 are formed is set to about 10 mm, the pitch between the recesses 24 and 26 is set to about 4 mm, and the depths of the recesses 24 and 26 are both set to about 0.5 mm. ing. The height of the sliding contact wall 20 of the case cover 16 is set to about 16 mm, and the height of the convex portion 22 is set to about 0.5 mm.

Next, the operation of this embodiment will be described.

As described above, when the case cover 16 is closed, the sliding contact wall 20 of the case cover 16 is in sliding contact with the peripheral wall 18 of the case body 14 as shown in FIG. 2A. When the case cover 16 is pushed against the cover 14, the protrusion 22 formed on the sliding contact wall 20 fits into the recess 26 after riding on the outer surface of the peripheral wall 18, as shown in FIG. 2B. In this state, the case cover 16 is not yet completely closed, but when the case cover 16 is pushed further, the convex portion 22 fits into the concave portion 24 after riding on the outer surface of the peripheral wall 18 again, as shown in FIG. 2 (c). The case cover 16 is completely closed and the case cover 16 is completely closed.

In this way, the case cover 16 once closed does not inadvertently open due to the engagement between the convex portion 22 and the concave portion 24 in a normal use state. Further, in the present embodiment, since the recess 26 is formed above the recess 24 and at a predetermined interval from the recess 24, the storage case 10 receives an impact load due to being dropped on the floor, etc. Even if the engagement between the portion 22 and the recess 24 is disengaged, the engagement between the protrusion 22 and the recess 26 prevents the case cover 16 from being opened accidentally.

As described above, according to the present embodiment, by adopting the double lock structure, the case cover 16 will be inadvertently opened even when the storage case 10 receives an impact load. Can be prevented. Therefore, it is possible to prevent the situation in which the 8 mm video tape cassette is thrown out of the storage case 10 and the 8 mm video tape cassette is damaged due to the opening of the case cover 16.

In the above embodiment, the convex portions 22 and the concave portions 24, 26 are formed on the left and right side walls of the sliding contact wall 20 and the peripheral wall 18, respectively. However, the front wall of the sliding contact wall 20 and the peripheral wall 18 ( The convex portion 22 and the concave portions 24 and 26 may be formed on the wall (on the side opposite to the hinge connection side), and even in such a case, the same operational effects as those of the above embodiment can be obtained.

Further, in the above-described embodiment, the recesses 26 are formed on both the left and right side walls of the peripheral wall 18, but the recesses 26 may be formed on only one of the left and right side walls. Of course, even in this case, it is possible to prevent the case cover 16 from being opened accidentally.

Furthermore, in the above-described embodiment, the cross-sectional shapes of the concave portion 24 and the concave portion 26 are substantially the same as the convex portion 22, but they are different from each other, for example, the depth of the concave portion 26 is shallower than that of the concave portion 24. You may make it a cross-sectional shape.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a magnetic tape cassette storage case according to the present invention.

FIG. 2 is a sectional view of an essential part showing the operation of the above embodiment.

[Explanation of symbols]

 10 Magnetic Tape Cassette Storage Case 12 Magnetic Tape Cassette Storage Section 14 Case Main Body 16 Case Cover 18 Circumferential Wall 20 Sliding Wall 22 Convex Section 24, 26 Recessed Section

Claims (2)

[Scope of utility model registration request] 1. A case main body having a magnetic tape cassette accommodating portion, and a case cover hinged to the case main body so as to be openable and closable, wherein the case main body is at least part of the periphery of the magnetic tape cassette accommodating portion. The case cover has a sliding contact wall that is in sliding contact with the peripheral wall of the case body when the case cover is closed, and a convex portion is formed on one of the peripheral wall and the sliding contact wall. On the other hand, in the magnetic tape cassette storage case in which a concave portion that engages with the convex portion is formed on the other side when the case cover is closed, in the wall in which the concave portion is formed, the peripheral wall and the sliding contact wall A magnetic tape cassette storage case, wherein at least one recess is formed in series at a predetermined distance from the recess in the direction in which the sliding contact is made. . 2. The height of the wall in which the recesses are formed in the recess forming portion is about 10 mm, the pitch between the recesses is about 4 mm, and the depth of each recess is about 0.5 mm.
The magnetic tape cassette storage case according to claim 1, wherein