JPH10297689A - Housing case for magnetic tap cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing case for a magnetic tape cassette which can prevent play of the tape reel of a magnetic tape cassette and also prevent troubles such as damage or the like even against excessive shocks and further, which is excellent in the putting-in and out manipulation of the cassette. SOLUTION: This case is provided with a connection means 5 by which a cover body 4 is connected to a housing case body 7 to be freely openable and closable by connecting the case body 7 and the cover body 4 with hinges, to hous a magnetic tape cassette 2 in the housing space of the case. A group of projections 38 formed of a plurality of projections 39 corresponding to at least the inside of a ring-form rib formed at the bottom face of the tape reel rotatably arranged in the cassette case body are provided on a bottom wall 31. The group 38 of projections are extended radially along almost the same direction with the radial direction of the tape reel to regulate the position of the tape reel against the case body 7.

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 in which a storage case main body and a lid covering an upper part of the storage case main body are configured to be freely opened and closed by hinge connection.

[0002]

2. Description of the Related Art Conventionally, there are various types of storage cases for storing a magnetic tape cassette such as a video tape cassette. FIG. 6 shows an example of a conventional storage case. The storage case 1 shown here is used for storing a magnetic tape cassette 2 having a substantially rectangular parallelepiped shape, and includes a storage case main body 3, a lid 4, and a storage case main body capable of opening and closing the lid 4. 3 and a connecting means 5 integrally formed of, for example, a synthetic resin.

[0003] Here, the storage case body 3 has a bottom wall portion 31.
A case left and right side wall portion 32 erected on both side ends of the bottom wall portion 31, a case front side wall portion 33 erected on the front end of the bottom wall portion 31, and a rear end of the bottom wall portion 31. The tape storage space 35 whose upper part is opened is formed by the case rear side wall 34 which is erected.

The lid 4 includes an upper wall portion 41 that covers the upper portion of the storage case main body 3, and lid right and left side wall portions 4 erected on both side ends of the upper wall portion 41 and overlap the case left and right side wall portions 32.
2 and a lid front side wall 43 erected at the front end of the upper wall 41 and overlaps the case front side wall 33.

The connecting means 5 connects the lower end of the connecting plate 51 to the rear end of the bottom wall 31 of the storage case body 3 and connects the upper end of the connecting plate 51 to the rear end of the upper end 41 of the lid 4. It is connected to. The upper and lower ends of the connecting plate 51 are both thinned and function as hinges 52 and 53. That is, the connecting means 5 is configured such that the lower end of the connecting plate 51 is hinged to the rear end of the bottom wall portion 31 and the upper end of the connecting plate 51 is hinged to the rear end of the upper wall portion 41. Has made.

When the magnetic tape cassette 2 is stored in the storage case 1 thus configured, as shown in FIG. 6, the storage case main body 3 and the lid 4 are widely opened, and the storage case main body is opened. The magnetic tape cassette 2 is put in the tape storage space 35 of No. 3, and the lid 4 is closed. In this case, the peripheral wall of the magnetic tape cassette 2 includes the case left and right side walls 32, 32, the case front side wall 33, and the case rear side wall 3
The magnetic tape cassette 2 is stored in the tape storage space 35 so as to be surrounded by the tape cassettes 4 and 34 and the like. The storage case 1 of this type includes, for example, the lid left and right side wall portions 42 of the lid 4.
On the inner surface side, a locking projection 4 that fits into an engagement concave portion 36 formed in the case left and right side wall portions 32 when the lid 4 is closed.
6 are formed, and the engagement concave portion 36 and the engagement projection 46 are fitted to each other, so that the closed state of the lid 4 is maintained.

When removing the magnetic tape cassette 2 from the storage case 1, the front edge 37 of the bottom wall 31 of the storage case body 3 and the front edge 4 of the top wall 41 of the lid 4 are removed.
By putting fingers on each of 7 and lifting the lid 4 side, the engagement between the engaging recesses 36 and the locking projections 46 is released, and the lid is opened.

[0008]

SUMMARY OF THE INVENTION The storage case 1 described above.
It is desirable that the magnetic tape cassette 2 be stored so as not to rattle. However, in order to achieve this, the dimensions enclosed by the side walls 32, 33, and 34 may be made closer to the cassette case main body to reduce the gap at the time of storage. There is a problem that the smaller the gap between the cassette case and the cassette case body, the more difficult it is to perform the cassette insertion / removal operation.

On the other hand, as a storage case capable of suppressing the backlash of the tape reel for winding the magnetic tape stored in the magnetic tape cassette 2, there is provided a comparison case in which the tape reel is inserted into a drive shaft insertion opening of a pair of tape reels. Some boss projections (locking means) are provided with an extremely high projection.
The boss protrusions are formed as a pair on the bottom wall of the storage case body corresponding to the pair of tape reels. Therefore, when the magnetic tape cassette is stored in the storage case, the pair of boss projections formed on the bottom wall of the storage case main body are fitted into the drive shaft insertion openings of the respective tape reels, thereby suppressing the play of the tape reel. it can.

However, even in such a storage case, in consideration of the operability of taking the cassette in and out, the backlash between the pair of boss projections and the tape reel has been unavoidable. Therefore, when a large impact is applied, such as when the storage case is dropped, an excessive impact is applied to the inner wall of the drive shaft insertion opening of the tape reel (the portion engaging with the drive shaft of the recording / reproducing device) and the boss protrusion. Is added. As a result, when the inner wall of the drive shaft insertion opening is damaged, the driving of the reel is hindered. On the other hand, when the boss projection is damaged, the recording performance is reduced by the broken piece or the like. Could be reduced.

Accordingly, an object of the present invention is to solve the above-mentioned problems, and it is possible to suppress a play of a tape reel of a magnetic tape cassette, to avoid a trouble such as breakage even by an excessive impact, and to perform an operation for inserting and removing a cassette. Another object of the present invention is to provide an excellent storage case for a magnetic tape cassette.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a storage case body having a bottom wall and a side wall standing upright to define a case storage space in the bottom wall. A lid having an upper wall covering an upper portion of the case main body, a side wall standing upright to define a case storage space in the upper wall, and overlapping with a side wall of the bottom wall; and the storage case main body. A magnetic tape cassette comprising: connecting means for hingedly connecting the lid and the lid to the storage case body so as to be openable and closable, and configured to store a magnetic tape cassette in the case storage space. In the storage case, the bottom wall portion is slidably in contact with at least an inner side of an annular rib formed on a bottom surface of a tape reel rotatably disposed in a cassette case body of the magnetic tape cassette. A projection group consisting of flat plate-shaped projections is provided, and the projection group extends radially in substantially the same direction as the radial direction of the tape reel, and the position of the tape reel with respect to the storage case main body by the projection group. This can be achieved by a storage case for a magnetic tape cassette, which is configured to regulate.

According to the above construction, the projections provided radially in the reel radial direction on the bottom wall of the storage case main body are provided on the bottom surface of the tape reel or the annular ribs on the bottom surface when the magnetic tape cassette is stored. Since the projections are engaged with each other, the projections can be brought into contact with the bottom surface on a substantially wide surface, so that the concentration of impact force when the case falls can be avoided. Furthermore, even when one end of the projection group in the radial direction collides with the rib side wall of the annular rib of the tape reel, the projection group has a sufficient thickness in the radial direction, so that the strength is sufficient. Yes, the risk of breakage can be avoided.

Further, since the projection group configured as described above is configured to contact the bottom surface of the tape reel and the annular rib, the height of each projection of the projection group is configured to be low. Therefore, the projections do not hinder the operation of storing the magnetic tape cassette in the storage case body.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a magnetic tape cassette storage case according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing the magnetic tape cassette storage case according to the first embodiment in a state in which a lid is opened, and FIG. 2 stores a magnetic tape cassette in the magnetic tape cassette storage case shown in FIG. FIG. 3 is an enlarged perspective view of an essential part of the magnetic tape cassette storage case shown in FIG.

The storage case 6 for the magnetic tape cassette is used for storing the magnetic tape cassette 2 having a substantially rectangular parallelepiped shape. The storage case body 7, the lid 4, and the storage case that can be opened and closed freely. The connection means 5 connected to the main body 7 is integrally formed of, for example, a synthetic resin or the like. However, the storage case body 7 is the same as the storage case body 3 shown in FIG. 6 except that radial projection groups 38, 38 described later are formed on the bottom wall portion 31. The connecting means 5 has exactly the same configuration as that shown in FIG.

That is, the storage case body 7 is
A case left and right side wall part 32 erected on both side ends of the bottom wall part 31; a case front side wall part 33 erected on the front end of the bottom wall part 31; A tape storage space 35 whose upper part is opened is formed by the case rear side wall parts 34 and 34 thus formed.

At substantially the center of the bottom wall portion 31, four flat plate-like projections 39 are arranged radially (in the case of the first embodiment, a cross) along a circle C1 (see FIG. 3). The formed projection groups 38, 38 are arranged at intervals A.
The interval A is set to be the same as the interval a between the drive shaft insertion openings 21 and 21 formed at the bottom of the magnetic tape cassette 2.

As shown in FIG. 3, each of the projections 39 has an upper end 38B which forms a flat surface and a radially expanded outer end 38A which is appropriately rounded. When the magnetic tape cassette 2 is stored, the protrusion 3
9 is a tape reel 2 having an upper end 38B as shown in FIG.
The bottom surface 21a (the lower surface of the lower flange 24) is in contact with the bottom surface 21a, and the end surface 38A is in sliding contact with the inner peripheral side surface of the annular rib 23a formed annularly on the bottom surface 21a.

Therefore, when the magnetic tape cassette 2 is stored in the tape storage space 35, the projections 38, 38 are formed on the bottom surfaces 21a, 21a of the tape reels 22, 22, and the annular ribs 23.
a and 23a can be locked simultaneously. In this case, the tape reels 22, 22 are held at a position below the cassette by the urging force of a leaf spring (not shown) (urging force in the direction of arrow X).

The height of the protrusion 39 can be appropriately set according to conditions such as the amount of upward movement of the tape reel 22 and the height of the tape storage space 35, and is not particularly limited. For example, it can be about 0.5 to 1 mm. With such a height, the projection group 3 is set when the magnetic tape cassette 2 is stored or taken out.
The magnetic tape cassette 2 without the
Can be easily stored in the tape storage space 35, and can be easily taken out from the tape storage space 35.

Further, as shown in FIG. 1, for example, the distance B between the projection group 38, 38 and the case rear side wall portion 34, 34
Is a drive shaft insertion opening 2 of the magnetic tape cassette 2.
The gap b is set to be substantially the same as the gap b between the guard panels 25 of the magnetic tape cassette 2 (for example, the gap B1 and the gap b1 may be substantially the same). In such a configuration, the magnetic tape cassette 2 is stored in the tape storage space 35.
Guard panel 25 protects magnetic tape when stored in
Contacts the rear wall 34 of the case (see FIG. 2). Thus, the guard panel 25 can be locked by the rear wall portion 34 of the case.

The lid 4 includes an upper wall portion 41 that covers the upper portion of the storage case body 7, and lid right and left side wall portions 4 that are erected on both side ends of the upper wall portion 41 and overlap the case left and right side wall portions 32.
2 and a case front side wall 3 erected at the front end of the upper wall 41.
3 and a lid front side wall portion 43 that overlaps with the cover 3.

The connecting means 5 connects the lower end of the connecting plate 51 to the rear end of the bottom wall 31 of the storage case body 3 and connects the upper end of the connecting plate 51 to the rear end of the upper end 41 of the lid 4. It was made. The upper and lower ends of the connecting plate 51 are both thinned and function as hinges 52 and 53. That is, the connecting means 5 is configured such that the lower end of the connecting plate 51 is hinged to the rear end of the bottom wall portion 31 and the upper end of the connecting plate 51 is hinged to the rear end of the upper wall portion 41.

When the magnetic tape cassette 2 is stored in the storage case 6, the storage case body 7 and the lid 4 are widely opened as shown in FIG. Magnetic tape cassette 2
Insert In this case, since the height of the projection groups 38, 38 is set low, the magnetic tape cassette 2 can be easily stored without obstructing the cassette insertion operation.

In this state, the lid 4 is closed, and the cassette case body, the tape reels 22 and 22 and the guard panel 25 are closed.
The magnetic tape cassette 2 is completely stored in the magnetic tape cassette storage case 6 so as not to rattle. In addition, as shown in FIG. 1, on the inner surface side of the lid left and right side wall portions 42 of the lid body 4, there are engagement members which are fitted into the engagement concave portions 36 formed in the case left and right side wall portions 32 when the lid body 4 is closed. The stop projections 46 are formed, and the engagement recesses 36 and the engagement projections 46 are fitted to each other, so that the closed state of the lid 4 is maintained.

Next, the storage case 6 for the magnetic tape cassette
When the magnetic tape cassette 2 is taken out from the storage case main body 7, the front end edge 37 of the bottom wall 31 of the storage case body 7 and the upper wall 4
1. Put a finger on each of the front edge portions 47 of the
The engaging recess 36 and the locking projection 46
And the lid is opened. Next, the magnetic tape cassette 2 is removed from the tape storage space 35 of the storage case body 7. Also in this case, the projection group 3
Since 8, 38 are set low, they do not hinder the unloading operation.

In the first embodiment, the case where the protrusion group 38 is arranged along one circle C1 has been described.
The configuration according to the present invention is not limited to this, and as in the second embodiment shown in FIG.
Can be formed in a double arrangement structure. That is, in the second embodiment, the projection groups 48 formed on the bottom wall portion 91 include four flat projections 71 formed on the inside and four flat projections 72 formed on the outside.
It consists of. In the second embodiment, configurations other than the protrusion groups 48, 48 and the tape reel 80 shown in FIG. 5 are the same as those of the first embodiment, and therefore illustration and description are omitted.

The projection groups 48, 48 thus configured
Can be applied to a magnetic tape cassette provided with a pair of tape reels 80 having double annular ribs 81 and 82 on the bottom surface (back surface) of the lower flange as shown in FIG.
That is, the inner projections 71, 7 of the projection groups 48, 48
1 is configured to slide in contact with the inside of the inner annular rib 81, and the outer protrusions 72, 72 are configured to slide in contact with the inside of the outer annular rib 82 and the outside of the annular rib 81.

[0030]

As described above, according to the storage case for a magnetic tape cassette according to the present invention, the magnetic tape is provided with a group of protrusions radially provided on the bottom wall of the storage case body along the reel radial direction. When the cassette is stored, the projections can be brought into contact with the bottom surface of the tape reel or the annular ribs on the bottom surface of the tape reel, so that the projections can contact the bottom surface on a substantially wide surface. Can be avoided. Further, even when one end of the projection group in the radial direction collides with the rib side wall of the annular rib of the tape reel, the projection group has a sufficient thickness in the radial direction, so that the strength is sufficient. Yes, the risk of breakage can be avoided.

Further, since the projections are configured to be in contact with the bottom surface of the tape reel and the annular rib, the height of each projection of the projections is configured to be low. Therefore, the projections do not hinder the operation of storing the magnetic tape cassette in the storage case body. Therefore, the play of the tape reel of the magnetic tape cassette can be suppressed, a trouble such as breakage due to an excessive impact can be avoided, and a storage case for the magnetic tape cassette excellent in the operation of taking in and out the cassette can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a lid is opened in a storage case for a magnetic tape cassette according to a first embodiment.

FIG. 2 is a sectional view showing a state where the magnetic tape cassette is stored in the magnetic tape cassette storage case shown in FIG. 1;

FIG. 3 is an enlarged perspective view of a main part of the storage case for the magnetic tape cassette shown in FIG. 1;

FIG. 4 is a perspective view of a main part of a storage case for a magnetic tape cassette according to a second embodiment.

FIG. 5 is a sectional view of a main part showing a state where the magnetic tape cassette is stored in the magnetic tape cassette storage case shown in FIG. 4;

FIG. 6 is a perspective view showing a state where a lid of a conventional magnetic tape cassette storage case is opened.

[Explanation of symbols]

 2 Magnetic Tape Cassette 4 Lid 5 Connecting Means 6 Storage Case for Magnetic Tape Cassette 7 Storage Case Main Body 21a Opening Edge 22 Tape Reel 23a Annular Rib 25 Guard Panel 31 Bottom Wall 32 Case Left / Right Side Wall 34 Case Rear Side Wall 36 Joint recess 38,68 Projection group 38A Outer end of projection 38B Upper end of projection 39,71,72 Projection 41 Top wall 42 Lid left / right side wall 46 Locking projection

Claims (1)

[Claims] A storage case body having a bottom wall portion and a side wall portion provided upright to define a case storage space in the bottom wall portion; an upper wall portion covering an upper portion of the storage case body; A lid having an upper wall portion provided upright to define a case storage space and having a side wall portion overlapping the side wall portion of the bottom wall portion, and the storage case body and the lid body are hingedly connected. A connection means for connecting the lid body to the storage case main body so as to be openable and closable, wherein the magnetic tape cassette storage case is configured to store a magnetic tape cassette in the case storage space; A projection group consisting of at least three plate-like projections that slide in contact with at least the inside of an annular rib formed on the bottom surface of the tape reel rotatably disposed in the cassette case body of the magnetic tape cassette; The protrusions extend radially in substantially the same direction as the radial direction of the tape reel, and are configured to regulate the position of the tape reel with respect to the storage case body by the protrusions. Storage case for magnetic tape cassettes.