JP2945981B2 - Tape cartridge storage case - Google Patents

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 accommodating various tape cartridges for video and audio, and particularly to an improved drip-proof structure capable of being sufficiently used outdoors.

[0002]

2. Description of the Related Art As a storage case of this kind of drip-proof structure,
For example, it is disclosed in Japanese Utility Model Laid-Open Publication No. 61-3272 and FIG.
As shown in FIG. 2, a body 2 having a bottomed rectangular cylindrical shape having an opening 11 into and out of which the tape cartridge 1 is inserted and removed, and an opening 11
The opening 11 is inserted into the outer peripheral surface 11a of the
And a lid 3 in the shape of a bottomed square tube that seals the bottom.
A packing P composed of a sealing O-ring is interposed between the outer peripheral surface 11a of the body 2 and the inner peripheral surface of the lid 3.
Even if the outer peripheral surface 11a of the mouth 11 of the body 2 or the inner peripheral surface of the lid 3 is slightly deformed by the external force or the temperature due to the interposition of the packing P, not only the dust proof effect but also the drip proof effect is obtained. In this respect, it is advantageous to store the tape cartridge 1 and carry it around a mountain or sea.

[0003]

However, the O-ring which is fitted and held in the concave groove 14 of the body 2 without a gap as in the above-mentioned prior art is compressed and deformed by sliding contact with the inner surface of the lid 3. And the sliding resistance is large, so that the lid 3 is difficult to be pulled out and inserted.

Accordingly, the present invention provides a packing P having elasticity with respect to the outer peripheral surface 11a of the mouth portion 11 of the body 2 having the shape of a bottomed rectangular tube into which the tape cartridge 1 is inserted and withdrawn as described above.
In a storage case in which the lid 3 can be freely inserted and removed through the opening, the purpose is to facilitate the removal and insertion of the lid 3 while ensuring the drip-proof performance by devising the cross-sectional shape of the packing P. I do.

[0005]

In the storage case of the present invention, as shown in FIG. 1, an outer peripheral surface 1 of a mouth portion 11 of a body 2 is provided.
A groove 14 is provided in the circumferential direction of the groove 1a. A packing P having elasticity is fitted and held in the groove 14. The packing P has an arc-shaped cross section, and the front side thereof is formed in a convex shape and protrudes from the outer peripheral surface 11a. At the same time, the back side is formed in a concave shape, and a space S is formed between itself and the inner bottom of the concave groove 14.

[0006] The inner peripheral surface 29 of the lid 3 which comes into contact with the front side of the packing P can be formed in a tapered shape whose diameter increases toward the end of the lid opening.

[0007]

The packing P is easily bent to the side where the space S exists by receiving the pressing contact force of the inner peripheral surface 29 in the closed state of the lid 3, so that the lid 3 can be easily inserted and removed.

[0008] Since the packing P is easy to flex freely in the presence of the space S, the convex front side is covered with the lid 3.
The inner surface of the cover 3 becomes flat while being pressed, and the contact state with the inner surface of the lid 3 becomes surface contact, so that the drip-proof sealing function is effectively exhibited.

[0009] By forming the inner peripheral surface 29 of the lid 3 which is in contact with the front side of the packing P into a tapered shape, the lid 3 can be more easily inserted and removed.

[0010]

According to the storage case of the present invention, it is possible to secure the drip-proof sealing effect by the packing P and to sufficiently cope with outdoor use, and to easily insert and remove the lid 3 with reduced sliding resistance. It has excellent handleability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated example, an 8 mm video tape cartridge is used, but the present invention can be applied to other tape cartridges as well. In FIG. 2, this storage case comprises a bottomed square tubular body 2 into and out of which an 8 mm video tape cartridge 1 is inserted and removed, and a bottomed square tubular lid 3 inserted and removed therefrom.

The body 2 is a plastic molded product, and a tape is provided on the upper end side of an open-topped bottomed cylindrical part 10 composed of a pentahedron of square front and rear walls 4.5, right and left walls 6.7, and a bottom wall 9. An opening 11 through which the cartridge 1 is inserted and removed is formed. 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 so that only a part of the upper and lower surfaces of the tape cartridge 1 can be exposed. A part of the tape cartridge 1 to be picked up is easily picked up by hand.

In FIG. 1, a body 2 is an outer peripheral surface 1 of a mouth portion 11.
1a is formed so as to be thinner than the outer dimension of the bottomed rectangular tube portion 10 by the thickness of the lid 3 so as to be thinner.
Outer surface 11a of the mouth portion 11 and the outer surface 10 of the bottomed rectangular tube portion 10
a step 13 is formed at the boundary between the opening 3a and the opening end of the lid 3 approaches or abuts the step 13 in the closed state, and the outer surface of the lid 3 and the outer surface 10a of the bottomed cylindrical portion 10 of the body 2 Is 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, shaft portions 25 a integrally projecting from the walls 6 and 7 are provided. The head 25b has a head-engaging shaft 25 having a larger diameter than the shaft diameter attached to the tip of the portion 25a.

In FIG. 2 and FIG. 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 a pentahedral open bottomed bottomed cylindrical portion 22 of an upper wall 21, and right and left walls 19 and 20 are connected to front and rear walls 16.1.
7 is an elastically deformable slide arm 23.2 formed integrally with the lower end edge 16a, 17a so as to extend further downward than the lower end edge 16a, 17a.
The slide arms 23 and 24 have a slide groove 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 in a T-shaped cross section, and the narrow groove portion 15 a through which the shaft portion 25 a of the headed engagement shaft 25 penetrates and the large-diameter head portion 25 b are prevented from falling out. And a wide groove portion 15b to be engaged. A cutout 15c having a diameter that allows the large head 25b of the headed engagement shaft 25 to be inserted 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 is shown.
A reinforcing wall 26 is attached to each corner where the lower end edge 17a of the right and left sides of the left and right slide arms 23 and 24 intersect to reinforce the slide arms 23 and 24 so that they do not bend outward. . The rear wall 5 of the body 2 corresponding to the reinforcing wall 26
Recesses 2 according to the shape and thickness of the reinforcing wall 26 on the outer surface of
7 are provided.

The body 2 and the lid 3 are connected to a slide arm 23 on the lid 3 side.
24 is fitted into both outer surfaces of the left and right walls 6 and 7 of the body 2, and the engagement shaft 2 with the head is inserted through the notch 15 c of the slide groove 15.
5 is inserted into the narrow groove 15a.
a is slidably engaged with each other in such a manner as to prevent slippage, so that they are integrally connected. By adopting a structure in which the body 2 and the lid 3 are integrally connected in this manner, the body 2 and the lid 3 can be prevented from coming off.

As shown in FIG. 1, the storage case constructed as described above has an outer peripheral surface 1 of an opening 11 on the body 2 side.
A groove 14 is formed in the entire end of the step 1a on the side of the step portion 13, and a packing P made of a vinylmethylsilicon material having excellent heat resistance and elasticity is fitted and held in the groove 14. The packing P is annular and formed in an arcuate cross section, the front side of which is formed in a convex shape with a curvature of R ₁ and protrudes from the outer peripheral surface 11a, and the back side is formed in a concave shape with a curvature of R ₂ to form a concave. A space S is formed between the groove 14 and the inner bottom. On the other hand,
Inner peripheral surface 29 of the lid 3 on the opening side that contacts the packing P
Is formed in a tapered shape whose diameter increases by an angle Θ, and the packing P is set to have a contraction dimension of α when the lid 3 is closed.

In the above configuration, as shown in FIG. 1, when the cover 3 is inserted into the outer peripheral surface 11a of the mouth 11 of the body 2 until the engagement shaft 25 with the head reaches the upper end position of the slide groove 15, the cover 3 The opening end of the packing 3 approaches or hits the step portion 13, and the inner peripheral surface 29 of the lid 3 presses the front side of the packing P. When the lid 3 is closed as described above, a force in the direction toward the inner bottom of the concave groove 14 where the packing P is F is applied by the pressing load by the tapered inner peripheral surface 29. At this time, the packing P has a space S. Because of this, it easily bends to the space S side, and at the same time, comes into surface contact with the inner peripheral surface 29 of the lid 3, so that the mating surface between the inner surface of the lid 3 and the outer peripheral surface 11 a of the mouth 11 of the body 2 is airtight. It can be sealed in a liquid-tight manner, so that dust and water can be prevented from entering the mouth portion 11. Further, the packing P bends in the direction A, and the inner wall 14 of the concave groove 14 of the body 2 is bent.
Since it is pressed against a, the sealing performance is also improved in this respect.

When the lid 3 is pulled upward (in the direction of arrow B in FIG. 4) from this closed state, the pressing action of the inner peripheral surface 29 of the lid 3 against the packing P is released, and the slide groove 15 is engaged with the head. It slides upward under the guidance of the joint shaft 25. Lid 3
When the engagement shaft 25 with the head reaches the lower end position of the slide groove 15, the reinforcing wall 2
6, the rear side (in FIG. 4, the direction of arrow C)
By opening and rotating the body 2, the upper part of the mouth 11 of the body 2 can be completely opened. In this state, the tape cartridge 1 can be freely inserted into and removed from the mouth 11 of the body 2.

FIG. 6 shows a comparative example of the packing P. Since the packing P has a rectangular cross section and is fitted and held in the concave groove 14 without any gap, it is difficult to bend. Due to the influence of the shrinkage dimension α of the packing P, the pulling force F ′ of the lid 3 becomes excessive, and the lid 3 is difficult to open. On the other hand, according to the packing P of the above embodiment, since the pushing force acting on the lid 3 is smaller than that of the comparative example, the force F ′ for pulling out the lid 3 can be set smaller.

The inner wall of the reinforcing wall 26 is formed to be thinner than the inner wall of the rear wall 17 so that the inner wall of the reinforcing wall 26 comes into sliding contact with the packing P when the cover 3 is inserted or removed. Such a situation is eliminated, and the lid 3 is easily inserted and removed.

The cover 3 does not always have to be integrally connected to the body 2 but may simply be inserted into and removed from the outer peripheral surface 11a of the mouth 11 of the body 2.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where a lid is opened.

FIG. 2 is a perspective view showing an opened state.

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

FIG. 4 is a side view showing an opening / closing operation state.

FIG. 5 is an enlarged sectional view taken along line VV in FIG.

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

FIG. 7 is a sectional view showing a conventional storage case in an open state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tape cartridge 2 Body 3 Lid 11 Mouth 14 Groove P Packing

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuhiro Takahashi 1-1-88 Ushitora, Ibaraki-shi, Osaka Hitachi Maxell, Ltd. (56) References Japanese Utility Model Sho-61-56274 (JP, U) Japanese Utility Model Sho-62 −83313 (JP, U) Fully open 60-604459 (JP, U) Fully open 58-135862 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65D 85/575

Claims (2)

(57) [Claims] 1. A bottomed rectangular tube-shaped body 2 having an opening 11 through which a tape cartridge 1 is inserted and removed, and an opening 1 of the body 2
1 is inserted into and removed from the outer peripheral surface 11a of the
And a lid 3 in the shape of a square cylinder with a bottom for closing
The outer peripheral surface 11a has a concave groove 14 provided in the circumferential direction thereof, 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 so as to protrude from the outer peripheral surface 11a, and its back side is formed in a concave shape to form a space S between itself and the inner bottom of the concave groove 14. Storage case for cartridges. 2. The lid according to claim 1, wherein the inner peripheral surface of the lid, which comes into contact with the front side of the packing, is formed in a tapered shape whose diameter increases toward the opening end of the lid. Storage case for tape cartridges.