JP2522855Y2 - Tape cassette storage case - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a VHS having a front lid for protecting a magnetic tape and a tape reel rotation preventing device.
-C (registered trademark) tape storage case.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIG.
FIG. 6 is an external perspective view of the tape cassette and its storage case. As a tape cassette for a small video tape recorder used for a video camera or the like, for example, there is a VHS-C (registered trademark) type tape cassette.
The storage case K comprises a storage case body 31 and a storage case lid 32 pivotably connected to the storage case body 31. The tape protection front lid 9 on the front side of the tape cassette G is A lock mechanism is provided which is pivotally mounted around the door so as to be freely opened and closed, and locks the front lid 9 in a closed state.

The tape cassette G is provided with a pair of reel hubs on which a magnetic tape is stretched, and the drawing shows a tape supply side hub 16 and a flange 8 of a tape winding side reel. When the tape cassette G is stored in the main body 31 of the storage cassette case K and the storage case lid 32 is closed, the hub 16 and the flange 8 are connected to the projections 17 and 18 provided on the case lid 32 side. Each of them engages to prevent unnecessary rotation of the hub 16 and the flange 8. When the tape cassette is not used, a lock member for locking the front lid 9 in a closed state is incorporated in the tape cassette G. When the tape cassette G is used by being loaded into a video camera or the like, the front cover 9 is used.
Is provided with a lock release projection 7 for releasing the closed state.

The lock release projection 7 is provided so as to be able to protrude and retract outside the case of the tape cassette G. When the tape cassette G is used, the projection 7 is engaged with the tape cassette G.
, And the front lid 9 can be freely opened. When the cassette G is stored in the storage case K, the protrusion 7 is
An opening C is provided in the storage case main body 31 so as not to receive a stress on the side wall of the storage case 1.

The above is a brief description of FIG.
Since the protrusions 17 and 18 are provided inside the lid 32 of the storage case K shown in FIG. 6, the tape cassette G must be stored in the storage case K in the direction shown in FIG. . For example, it is not possible to store the tape cassette G in the storage case K upside down,
It is very inconvenient for storage operation.

Therefore, there has been proposed a tape cassette in which the convex portion for preventing the rotation of the reel hub is eliminated from the storage case and the tape cassette can be stored from a plurality of directions. This is a small-sized tape cassette having a pair of reel hubs on which a magnetic tape is stretched and a brake mechanism for preventing unnecessary rotation of the pair of reel hubs. Japanese Patent Application No. 2-229804 (Japanese Unexamined Patent Application Publication No.
No. 11278) and Japanese Patent Application No. 2-262382 (Japanese Unexamined Patent Application Publication No.
139679), a tape cassette as disclosed in Japanese Patent Application No. 2-331061 (Japanese Patent Application Laid-Open No. 4-205766),
That is, it relates to the storage case F of the tape cassette D incorporating the reel hub rotation preventing device, and has a different shape from the storage case K shown in FIG. However, since the front cover 9 and the release projection 7 for protecting the tape are also provided in the tape cassette D, the front cover 9 and the release projection are not provided in the storage case K or the storage case F. There is a common problem associated with 7. Hereinafter, the related art and its problems will be described in detail with reference to FIG.

FIG. 5 is a cross-sectional view of a main part in a state where the tape cassette D is stored in a storage case F. The tape cassette D has a built-in reel hub rotation preventing device, and a case F accommodating the tape cassette D is not provided with a reel hub rotation preventing projection. The prior art will be described below using an example of this type of storage case. The storage case F includes a storage case main body 1 and a storage case lid 2 pivotally connected to the main body.
Pivot freely about a pivot 26 on the hinge projection 20 of the lid 2.

Further, there is provided a lock mechanism for pivotally connecting a front cover 9 for protecting tape on the front side of the tape cassette D to be openable and closable around a horizontal axis 10 and locking the front cover 9 in a closed state. Have been. The tape cassette D is provided with a pair of reel hubs on which a magnetic tape is stretched,
The figure shows the flange 8 of the tape take-up reel. The tape cassette D is provided with a lock releasing projection 7 for releasing the closed state of the front lid 9 when the tape cassette D is used by being loaded into a video camera or the like.

The side wall 27 of the tape cassette case E of the tape cassette D has a window 29 through which the projection 7 passes.
The lock release projection 7 is provided so as to be able to protrude and retract outside the tape cassette case E. When the tape cassette D is used, the projection 7 is pressed inward of the case, and the locking member 23,
The lock claws 24, the leaf springs 22 and the like are pushed inward of the case of the tape cassette D, and the front lid 9 is opened freely. In a state where the tape cassette D is stored in the storage case F, the projection 7 is pressed to the outside of the case of the tape cassette D by a spring retainer 21, a leaf spring 22, a lock member 23, and the like. The front lid recess 25 is loosely fitted. At this time, an opening C is provided in the storage case main body 1 so that the projection 7 does not receive a stress due to the side wall of the storage case main body 1.

In FIG. 5, the lock mechanism has a lock member 23 disposed near an inner surface of a side wall 27 of the tape cassette case E. The front cover 9 is held in a closed state by loosely fitting into a concave portion 25 provided on the inner surface of the side portion 13 of the front cover 9. The lock member 23 is provided with a release projection 7, and when the tape cassette D is loaded in a video camera or the like, the release projection 7 is pressed inward of the tape cassette D by the release member on the video camera side to lock. The claw 24 is disengaged from the concave portion 25 of the front lid 9 and moves to the unlock position. On the other hand, when the tape cassette D is detached from a video camera or the like, the release projection 7 is moved by the spring retainer 21 and the leaf spring 22 or the like.
And protrudes outward from a window 29 provided in the side wall 27 of the tape cassette case E.
At this time, the lock claw 24 and the front lid recess 25 are loosely fitted,
Lock the front lid in the closed state.

The storage case F of the tape cassette D as described above is manufactured as small as possible as long as the tape cassette D can be stored. Therefore, in the storage case F,
When the tape cassette D whose release protrusion 7 protrudes outward from the side wall 27 of the tape cassette case E is stored,
Assuming that the opening C is not provided in the storage case body 1, the release projection 7 comes into contact with the inner surface of the side wall 3 of the storage case body 1 as apparent from FIG. D is pressed inward. If such a pressed state lasts for a long time,
This may cause fatigue of the spring member 22 that constantly biases the lock member 23 in the direction of the lock position, deterioration of the lock function, and the like.
Particularly, in the case where the integrally formed spring is formed on the lock member 23 made of plastic, there is a problem that the plastic deformation is remarkably exhibited.

Conventionally, in order to solve the above problem, FIG.
As shown in FIG. 5, a concave or penetrating opening is provided at a portion C of the side wall 3 where the unlocking projection 7 contacts.
Is not pressed by the side wall 3 of the storage case body 1. The concave opening provided in the portion C is a cutout having a depth of, for example, about half the thickness of the member of the side wall 3, and the through opening provided in the portion C is It is a through hole through which the release projection 7 can freely pass.

[0013]

As described above, when a space for avoiding the contact of the release projection 7 is provided on the side wall 3 of the case body 1, a hole is formed in the side wall of the storage case F. , So as to reduce the thickness of part of the side wall,
When the mechanical strength of the portion is weakened and the storage case F is dropped, problems such as damage to the storage case F and the stored tape cassette D occur. Regardless of the presence or absence of the opening of the part C, the storage case lid 2
The height of the hinge projection 20 for opening and closing the hinge is limited to the wall thickness of the side wall 3 of the storage case body 1 or less, so that the lid of the storage case is easily detached when the storage case falls. In addition, the concave portion or the notch provided in the portion C has an undercut in plastic molding, and has a drawback such as a complicated mold structure.

According to the present invention, the release projection 7 of the front lid lock member 23 is connected to the side wall 27 of the tape cassette case E as described above.
The storage case comprises a storage case main body 1 and a storage case cover 2 that house a tape cassette D that protrudes outward and retracts and that incorporates an unnecessary rotation preventing device for a pair of reel hubs. An object of the present invention is to improve mechanical strength, prevent plastic deformation and fatigue of the front lid lock member 23 and the spring member 22, and facilitate storage of the tape cassette D from multiple directions. .

[0015]

In order to solve the above-mentioned problems, the present invention comprises a front cover 9 which can be freely opened and closed for protecting tape and a lock member 23 which holds the front cover 9 in a closed state. The lock member 23 is used to release the lid 9 from the closed state.
Is projected from a part of the side wall 27 of the tape cassette case E so as to be able to protrude and retract to the outside of the case, and is provided in a storage case of the tape cassette D including a rotation preventing device for the reel hub. As shown in FIG. 1, a storage case main body 1 and a storage case lid 2 which is pivotally attached to the main body so as to be openable and closable are provided, and both side walls of the storage case main body 1 are provided. This is a tape cassette storage case in which ribs 11 and 12 are provided at positions above and below the position of the release projection 7 in the longitudinal direction of the inner surface.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. 1 to 4 show an embodiment of the storage case of the present invention, which is made of, for example, transparent or translucent plastic. FIG. 1 is a front view showing an embodiment of the present invention, in which a tape cassette D is stored in a storage case F including a storage case main body 1 and a storage case lid 2 pivotally connected to the main body. Indicates a state in which The case main body 1 and the case lid 2 are connected to the hinge convex portion 2 of the case lid 2.
0, and the case lid 2 is hinged to the hinge projection 20.
Can be rotated around the rotation shaft 26 of the first embodiment. When the case lid 2 is closed, the small convex portion 6 provided on the case lid 2 and the small concave portion 5 provided on the case body 1 are locked. The tape cassette D is provided with a take-up side tape reel flange 8, a tape protection front cover 9, a lock release projection 7, and the like. The front cover 9 can rotate around a rotation shaft 10. The case body 1 has two side walls 3 and 4 facing each other, and the side wall 3 is close to the release protrusion 7.

On the inner surface of the side wall 3, reinforcing ribs 11 are provided in the longitudinal direction of the side wall 3 at positions above and below the position of the release projection 7, respectively. Similar ribs 12 are also provided on the inner surface of the side wall 4 facing the side wall 3 at positions above and below the release projection 7 in the longitudinal direction of the side wall 4, respectively. FIG. 2 is a bottom view showing a state where the tape cassette D is stored in the storage case F of the present invention,
As described above, for example, it is made of a transparent or translucent plastic. In the ribs 11 and 12, on the entrance side of the storage case body 1, the guide inclined portions 14 and 15 are provided.
Are provided respectively. The four guide inclined portions are tapered portions for facilitating easy storage of the tape cassette D in the storage case F.

FIG. 3 is a sectional view of the tape cassette and the main part of the storage case of the present invention. The method of storing the tape cassette D is also the same as when the lid 2 of the storage case F is first opened, and the tape cassette D is stored and removed from the lid side of the storage case main body 1, that is, the entrance side of the main body 1. When the front lid 9 is not loaded in a video camera or the like, the front lid 9 is locked in a closed state, and the release projection 7 of the lock member 23 projects outward from the cassette case E. On the inner surface of the side wall 3 of the storage case body 1, the ribs 11 are provided above and below the position of the release projection 7, respectively. A guide inclined portion 14 is provided to facilitate storage of the tape cassette D.

As is apparent from FIG. 3, a gap is secured between the cassette case E and the side wall 3 in the vicinity of the release projection 7 by the rib 11, and the side wall 3 of the projected release projection 7 is provided. To prevent abutment. On the other hand, the height of the hinge projection 20 is not limited by the thickness of the side wall 3 in the vicinity thereof, but can be increased by the gap of the rib 11. This has the effect of preventing the lid 2 from falling off.

As described above, the present invention provides a tape cassette D having a built-in rotation preventing device for a tape reel hub.
And two ribs 11 and 12 are provided on the inner surfaces of the side walls 3 and 4 of the storage case main body, respectively, and the release projections 7 protruding from the side wall 27 of the tape cassette case E. However, the tape cassette D is not pressed against the side wall 3 or 4, and the tape cassette D is extremely easily stored in the storage case F. That is, there is no structure in the storage case F, such as a convex portion for preventing unnecessary rotation of the tape reel hub, which hinders the storage of the tape cassette D. At about half the height of Case E,
Even when the tape cassette D is stored upside down, the tape cassette D does not come into contact with the ribs 11 and 12 and is guided by the guide inclined portions 14 and 15, so that the storage of the tape cassette D is extremely simple and easy. It becomes.

FIG. 4 is a view showing an example of the storage posture of the tape cassette D. However, three other storage postures are possible. That is, with respect to the first posture shown in FIG.
Is a posture in which the tape cassette D is rotated by 180 degrees horizontally. The third posture is a posture in which the cassette D is turned upside down with respect to the first posture, and the fourth posture is
From the third position, the tape cassette D is rotated 180 degrees horizontally, so that the tape cassette D can be stored smoothly in any position, and the release protrusion 7 is provided on the side wall of the storage case body 1. There is no contact, and as before,
When storing, the tape supply side hub 16 of the tape cassette D,
This eliminates the need for the effort to match the projection 17 of the storage case 2. Although a transparent or translucent plastic is used as an embodiment of the storage case of the present invention, it is apparent that, for example, an opaque plastic material does not depart from the scope of the present invention.

[0022]

According to the tape cassette storage case of the present invention, the strength of the side surface of the tape cassette storage case main body 1 is increased, and the cassette can be stored in four positions.
In any position, the cassette unlocking projection 7
Since the lock member and the like are protected without the abutment of the storage case body 1 with the storage case body, the storage of the cassette is extremely simple and easy. Further, the height of the hinge projection 20 can be increased,
Even when the storage case receives an impact due to a drop or the like, it is possible to make it difficult for the lid 2 to fall off.

[Brief description of the drawings]

FIG. 1 is a front view showing a state where a tape cassette is stored in a storage case of the present invention.

FIG. 2 is a bottom view showing a state where the tape cassette is stored in the storage case of the present invention.

FIG. 3 is a sectional view of a main part of the tape cassette and the storage case of the present invention.

FIG. 4 is a diagram illustrating an example of a storage posture of a tape cassette.

FIG. 5 is a sectional view of a main part of a conventional storage case.

FIG. 6 is an external perspective view of a general tape cassette and a storage case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage case main body 2 Storage case lid 3 Side wall of storage case main body 4 Side wall of storage case main body 5 Small recess of storage case main body 6 Small convex part of storage case lid 7 Unlocking protrusion 8 Flange of take-up side tape reel 9 Tape protection Front lid 10 Rotating axis of front lid 11 Rib 12 Rib 13 Side of front lid 14 Guide inclined part 15 Guide inclined part 16 Tape supply side hub 20 Hinge convex part of storage case lid 21 Spring retainer 22 Spring member 23 Lock member Reference Signs List 24 Lock claw 25 Front lid side recess 26 Storage case lid rotation axis 27 Tape cassette case side wall 28 Storage case lid side wall 29 Window of tape cassette case C Opening of storage case body D Brake built-in tape cassette E Tape cassette case F Storage case G Brake non-built-in tape cassette case K General storage case

Claims (1)

(57) [Scope of request for utility model registration] An openable and closable front cover for protecting a tape and a locking member for holding the tape in a closed state are provided.
Said to open the lid to order the locking member 23 <br/> releasing projection 7 for operating the can has freely protruding retractable from a portion of the side wall 27 of the tape cassette case E towards the outside of the case, the reel hub of times to house the tape cassette D with a built-in dynamic prevention device
A tape cassette storage case,
Formed in a box shape with an opening on one side to accommodate the unit D
Opening and closing the storage case body 1
And a storage case lid 2 pivotally attached to the storage case.
Inside the cassette body 1 in the insertion direction of the tape cassette D.
The inner surface of the side wall faces in the insertion direction of the tape cassette D.
The release projection 7 extends in a closed state.
The ribs 11 and
12. A tape cassette storage case, comprising: