JPH04294777A - Housing case for tape cartridge - Google Patents

Abstract

PURPOSE:To improve drip-proofness and to facilitate the insertion and draw-out of a lid. CONSTITUTION:A housing case is provided with a bottomed rectangular tube body 2 having a mouth 11 through which a tape cartridge 1 is inserted and drawn out, and a bottomed rectangular tube lid 3 inserted, easily being drawn out, into an outer periphery 11a of the mouth 11 of the body 2 for closing the mouth 11. Further, a recessed groove 14 is provided on an outer periphery of the mouth 11 and a packing P is engaged with and held in the recessed groove 14. The packing P is arch-shaped in the cross section, and its front side is formed in a projection projected toward the outer periphery 11a of the mouth 11. The rear side is formed in a recess, and a space S is formed between the rear side recess and an inner bottom of the recessed groove 14. By this, the packing P is easy to bend in a lid 3 closed state by the presence of the space S, and the lid 3 can be easily inserted and drawn out while keeping its drip-proofing function.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage case for storing various video and audio tape cartridges, and has an improved drip-proof structure so that it can be used particularly outdoors.

0002

[Prior Art] As a storage case with this kind of drip-proof structure,
For example, it is disclosed in Japanese Utility Model Application Publication No. 61-3272, and FIG.
As shown in the figure, a body 2 having a bottomed square cylinder shape having an opening 11 through which the tape cartridge 1 is inserted and taken out, and an opening 11 of the body 2.
The mouth portion 11 is inserted into and removed from the outer circumferential surface 11a of the
There is one that consists of a lid 3 in the shape of a rectangular cylinder with a bottom to seal it. A packing P made of an O-ring for sealing is interposed between the outer peripheral surface 11a of the body 2 and the inner peripheral surface of the lid 3. Due to the presence of the packing P, even if the outer circumferential surface 11a of the opening 11 of the body 2 or the inner circumferential surface of the lid 3 is slightly deformed due to external force or temperature, it is not only dust-proof but also drip-proof. In this respect, it is also advantageous to store the tape cartridge 1 and carry it with you to the mountains, mountains, sea, etc.

0003

[Problems to be Solved by the Invention] However, the O-ring, which is fitted and held in the concave groove 14 on the side of the body 2 without any gaps, as in the conventional example described above, is compressively deformed due to sliding contact with the inner surface of the lid 3. This increases the sliding resistance and makes it difficult to insert and remove the lid 3.

Therefore, the present invention provides a packing P having elasticity against the outer peripheral surface 11a of the mouth portion 11 of the body 2 having a bottomed rectangular tube shape, into which the tape cartridge 1 is taken in and taken out.
In a storage case in which the lid 3 can be inserted and removed freely through the storage case, the purpose is to make it easier to insert and remove the lid 3 while ensuring drip-proof performance by devising a cross-sectional shape of the packing P. do.

[0005]

[Means for Solving the Problems] In the storage case of the present invention, as illustrated in FIG.
A groove 14 is provided in the circumferential direction of the groove 1.
4 is fitted and held with elastic packing P, and the packing P has an arc-shaped cross section and a convex front side to form the outer circumferential surface 1.
1a, and its back side is formed into a concave shape to form a space S between it and the inner bottom of the groove 14.

The inner circumferential surface 29 of the lid 3 that comes into contact with the front side of the packing P can be formed into a tapered shape whose diameter increases toward the opening end of the lid.

[0007]

[Operation] When the lid 3 is closed, the packing P is easily bent toward the side where the space S exists under the pressure contact force of the inner circumferential surface 29 of the lid 3, and the lid 3 can be easily inserted and removed.

Since the packing P is easily flexible in the presence of the space S, its convex front side is connected to the lid 3.
It becomes flat while being pressed by the inner surface of the lid 3, and the contact state with the inner surface of the lid 3 is surface contact, so that the drip-proof sealing function is effectively exhibited.

By forming the inner circumferential surface 29 of the lid 3 that comes into contact with the front side of the packing P into a tapered shape, the lid 3 can be inserted and removed more easily.

0010

[Effects of the Invention] According to the storage case of the present invention, the packing P not only ensures a drip-proof sealing effect and is suitable for outdoor use, but also allows the lid 3 to be easily inserted and removed with less sliding resistance. It has excellent handling properties.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated example, an 8 mm video tape cartridge is targeted, but the present invention can be similarly applied to other tape cartridges. In FIG. 2, this storage case consists of a bottomed rectangular cylindrical body 2 into which an 8 mm video tape cartridge 1 is inserted and taken out, and a bottomed angular cylindrical lid 3 which is inserted into and removed from the body 2.

The body 2 is a plastic molded product, and a tape is attached to the upper end of an upwardly open bottomed rectangular cylindrical portion 10 consisting of a pentahedron of rectangular front and rear walls 4 and 5, left and right walls 6 and 7, and a bottom wall 9. It forms an opening 11 through which the cartridge 1 is inserted and taken out. A notch 12 is formed at the center in the left-right direction of each edge on the mouth side of the front and rear walls 4 and 5, allowing only a part of the upper and lower surfaces of the tape cartridge 1 to be exposed. A part of the tape cartridge 1 to be loaded is easily pinched by hand to make it easy to take out.

In FIG. 1, the body 2 is the outer circumferential surface 1 of the mouth portion 11.
By forming 1a thinner than the outside dimension of the bottomed square tube part 10 by approximately the plate thickness dimension of the lid 3, the body 2
The outer peripheral surface 11a of the mouth portion 11 and the outer surface 10 of the bottomed square tube portion 10
A step part 13 is formed at the boundary with the body 2, and the open end of the lid 3 approaches or abuts the step part 13 in the closed state, and the outer surface of the lid 3 and the outer surface 10a of the bottomed square tube part 10 of the body 2. are made to be almost flush.

As shown in FIGS. 2 to 4, at the ends of the outer surfaces of the left and right walls 6 and 7 of the body 2 near the mouth, there is a shaft portion 25a integrally protruding from each wall 6 and 7, and a shaft portion 25a integrally projecting from each wall 6 and 7. A headed engagement shaft 25 is provided, which includes a head 25b attached to the tip of the portion 25a and having a diameter larger than that of the shaft.

In FIGS. 2 and 3, the lid 3 is also a plastic molded product, and has rectangular front and rear walls 16 and 17, and left and right walls 19.
20, and the bottomed square cylinder part 22 of the pentahedron with an open bottom, and the left and right walls 19 and 20 are connected to the front and rear walls 16 and 1.
Elastically deformable slide arms 23 and 2 are integrally formed to extend further downward than the respective lower end edges 16a and 17a of 7.
4, and the slide arms 23 and 24 have slide grooves 1.
5 is opened to a predetermined length in the vertical direction. As shown in FIGS. 4 and 5, the slide groove 15 is formed to have a T-shaped cross section, and a narrow groove portion 15a through which the shaft portion 25a of the headed engagement shaft 25 passes and a large diameter head portion 25b are formed in a retaining manner. It consists of a wide groove portion 15b that engages with the wide groove portion 15b. A notch 15c having a diameter that allows the large-diameter head 25b of the headed engagement shaft 25 to be assembled and inserted is formed in a part (the upper end in the illustrated example) of the narrow groove 15a.

In FIGS. 1 and 3, the rear wall 17 of the lid 3
A reinforcing wall 26 is provided at each corner where the lower end edge 17a of the left and right slide arms 23, 24 intersect with the respective rear ends of the left and right slide arms 23, 24 to reinforce the slide arms 23, 24 so that they do not bend and deform outward. . The rear wall 5 of the body 2 corresponds to this reinforcing wall 26.
A recess 2 corresponding to the shape and thickness of the reinforcing wall 26 is formed on the outer surface of the reinforcing wall 26.
7 is provided.

The body 2 and the lid 3 are connected to the sliding arm 23 on the lid 3 side.
24 into both outer surfaces of the left and right walls 6 and 7 of the body 2, and insert the headed engagement shaft 2 from the notch 15c of the slide groove 15.
Insert the large diameter head 25b of No. 5 into the narrow groove 15a and insert the shaft 25 into the narrow groove 15a.
A is slidably and securely engaged to be integrally connected. By adopting a structure in which the body 2 and the lid 3 are integrally connected in this way, it is possible to prevent the body 2 and the lid 3 from coming off.

[0018] As shown in FIG.
A concave groove 14 is formed at the side end of the stepped portion 13 of 1a over the entire circumference, and a packing P made of vinyl methyl silicone material having excellent heat resistance and elasticity is fitted and held in the concave groove 14. The packing P is annular and has an arc-shaped cross section.The front side is formed convex with a curvature of R1 so as to protrude from the outer circumferential surface 11a, and the back side is formed concave with a curvature of R2 to form a groove 14. A space S is formed between the inner bottom and the inner bottom. On the other hand, the inner peripheral surface 29 of the opening side end of the lid 3 that comes into contact with the packing P is formed into a tapered shape whose diameter increases by an angle Θ, and when the lid 3 is closed, the packing P has a contraction dimension of α. It is set like this.

In the above structure, as shown in FIG. 1, when the lid 3 is inserted into the outer circumferential surface 11a of the opening 11 of the body 2 until the headed engagement shaft 25 reaches the upper end position of the slide groove 15, the lid 3 is closed. The open end of the lid 3 approaches or abuts the stepped portion 13, and the inner circumferential surface 29 of the lid 3 presses the front side of the packing P. When the lid 3 is closed in this way, a force is applied to the packing P toward the inner bottom of the concave groove 14 at F due to the pressing load from the tapered inner circumferential surface 29, but at this time, the packing P has a space S. Therefore, it easily bends toward the space S side, and at the same time comes into surface contact with the inner circumferential surface 29 of the lid 3, making the mating surface between the inner surface of the lid 3 and the outer circumferential surface 11a of the mouth portion 11 of the body 2 airtight. , it can be sealed in a liquid-tight manner, and it is possible to prevent dust and water from entering the mouth part 11. Furthermore, the packing P is bent in the direction A, and the inner wall 14 of the concave groove 14 of the body 2
Since it is also pressed against a, the sealing performance is improved in this respect as well.

When the lid 3 is pulled out upward (in the direction of arrow B in FIG. 4) from this closed state, the pressing action on the packing P by the inner circumferential surface 29 of the lid 3 is released, and the slide groove 15 is closed to the head. It slides upward under the guidance of the mating shaft 25. Lid 3
When the headed engagement shaft 25 reaches the lower end position of the slide groove 15, the reinforcing wall 2 is moved around the headed engagement shaft 25.
The side where 6 exists, that is, the rear (direction of arrow C in Figure 4)
By opening and rotating the body 2, the upper part of the mouth part 11 of the body 2 can be completely opened. Under this condition, the tape cartridge 1 can be freely inserted into and taken out from the opening 11 of the body 2.

FIG. 6 shows a comparative example of the packing P. This packing P has a rectangular cross section and is held in the concave groove 14 without any gaps, making it difficult to bend. It is greatly affected by the shrinkage dimension α of the packing P, and the pulling force F' of the lid 3 becomes excessive, making it difficult to open the lid 3. On the other hand, according to the packing P of the above-mentioned embodiment, since the push-back force acting on the lid 3 is smaller than that of the comparative example, the force F' for pulling out the lid 3 can also be set smaller than that.

The inner surface of the reinforcing wall 26 is formed thinner than the inner surface of the rear wall 17 so that the inner surface of the reinforcing wall 26 slides into contact with the packing P when the lid 3 is inserted or removed. This eliminates this problem and makes it easier to insert and remove the lid 3.

[0023] The lid 3 does not necessarily have to be of a form that is always integrally connected to the body 2, and may simply be inserted into and removed from the outer peripheral surface 11a of the mouth portion 11 of the body 2.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the lid in an open state.

FIG. 2 is a perspective view showing the lid in an open state.

FIG. 3 is a rear view showing the body and lid in a separated state.

FIG. 4 is a side view showing the opening/closing operating state.

FIG. 5 is an enlarged sectional view taken along the line V-V in FIG. 4;

FIG. 6 is a sectional view of main parts showing a comparative example.

FIG. 7 is a sectional view showing a conventional storage case with the lid open.

[Explanation of symbols]

1 Tape cartridge 2 body 3 Lid 11 Mouth part 14 Concave groove P Packing

Claims (2)

[Claims] 1. A tape cartridge 1 is inserted into and removed from the outer circumferential surface 11a of the mouth 11 of the body 2, which is in the shape of a square cylinder with a bottom, and has a mouth 11 into which the tape cartridge 1 is inserted and taken out, thereby closing the mouth 11. It consists of a lid 3 in the shape of a rectangular cylinder with a bottom, and a mouth part 1.
A concave groove 14 is provided in the outer circumferential surface 11a of 1 in the circumferential direction, and a packing P having elasticity for sealing is fitted and held in the concave groove 14, and the packing P has an arc-shaped cross section.
A tape characterized in that its front side is formed in a convex shape to protrude to the outer circumferential surface 11a, and its back side is formed in a concave shape to form a space S between it and the inner bottom of the groove 14. Cartridge storage case. 2. The inner circumferential surface 29 of the lid 3 that comes into contact with the front side of the packing P is formed into a tapered shape whose diameter increases toward the opening end of the lid. Storage case for tape cartridges.