JP2001301835A - Housing case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing case capable of securing a sufficient cushioning performance while employing a thin-wall material as a cushioning material. SOLUTION: The housing case is composed of a set of an inner and an outer cases 10, 20, which are fitted to each other, and cushioning materials 3, 4 provided in both the cases 10, 20, respectively, to hold contents A. The cushioning materials 3, 4 formed of a material deformable by compression and bending are fixed to respective intermediate portions positioned in the direction of the thickness of the cases 10, 20 in the state of leaving spaces 17, 27 for deformation to be made by bending the cushioning materials 3, 4 toward the rear face sides thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing case suitable for housing a plate-shaped component.

[0002]

2. Description of the Related Art As a plate-like component, for example, an IC chip, a chip resistor, a chip capacitor, various sensing devices, etc. are mounted on an LSI chip or a printed board.
Substantially flat electronic components are widely used. As a storage case used when shipping these electronic components, it has a conductive and compressible and deformable cushioning material, and by holding the electronic component between the cushioning materials, it is possible to prevent static electricity and physical shock. Devices configured to protect electronic components are widely used. For example, in an additional RAM card or the like of a personal computer, a RAM card that is held between cushioning members made of conductive sponge formed in a flat plate shape and accommodated in a box made of cardboard or the like is widely used. .

[0003]

The housing case is configured to absorb an external impact only by compressive deformation of the cushioning material. Therefore, in order to obtain a sufficient cushioning effect, the cushioning material is required. The thickness of the cushioning material must be set large enough to accommodate electronic components of various thicknesses. Will be higher.

[0004] It is an object of the present invention to provide a housing case which can secure a sufficient cushioning performance while adopting a thin cushioning material.

[0005]

SUMMARY OF THE INVENTION A housing case according to the present invention includes a pair of inner and outer cases which are fitted to each other, and a cushioning material which is respectively housed in the two cases to hold a stored object. A state in which the cushioning material contained in one of the cases is made of a material capable of compressive deformation and bending deformation, and the cushioning material has a space for bending deformation on the back side in the middle of the thickness direction of the one case. It is fixed with.

In this storage case, the stored material is held between a pair of cushioning materials, and at least one of the cushioning materials is made of a material which can be compressed and bent. Since a space for bending deformation is formed on the back surface of the cushioning member, sufficient cushioning performance can be secured by compressive deformation and bending deformation of the cushioning material while reducing the thickness of the cushioning material.

[0007] The cushioning material can be fixed to the case by using an adhesive or the like. However, if a claw portion for fixing the cushioning material is integrally formed on the side wall of the case, the housing case can be manufactured. This is preferable because the cushioning material can be fixed without increasing the number of steps and the like and increasing the manufacturing cost.

The space for bending deformation formed on the back surface of the cushioning material is provided with a mounting step for mounting the outer peripheral portion of the cushioning material at an intermediate portion in the thickness direction of the case. It is preferable to form it and to form it by mounting a cushioning material on the mounting step, because it can be realized without lowering the moldability of the case and increasing the manufacturing cost.

Although both cases can be divided, it is possible to easily manage and store both cases by providing a hinge portion for rotatably connecting the two cases and integrally molding both cases and the hinge portion. Is preferred.

Although this housing case can be manufactured by injection molding or the like, it is preferable that both cases are made of a synthetic resin sheet material and manufactured by vacuum forming or the like because it can be manufactured at low cost.

When the housing case is formed of a synthetic resin sheet, the side wall of the case disposed inside is formed of a double wall of an inner wall and an outer wall, and a cushioning material is provided on the inner wall. At the same time, the other case is externally fitted to the outer wall. With this configuration, it is possible to easily form the above-described claw portion and mounting step portion on the case on the inner wall portion.

[0012] Various housing items can be stored in the storage case. However, when a substantially flat electronic component is stored as a storage item, a buffer is provided to prevent damage to the electronic component due to static electricity. A material made of a material having conductivity is used as the material.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, the housing case 1 includes a case main body 2 having an inner case 10 and an outer case 20 which are fitted to each other, and both cases 1.
0 and 20 are respectively provided with cushioning materials 3 and 4
The storage item A is stored in the storage case 1 while being held between the cushioning members 3 and 4.

As the container A, a container which can be used in an arbitrary shape and an arbitrary application as long as it is substantially flat can be accommodated. In particular, it is suitable for accommodating the container A that is easily damaged by vibration, impact, or the like. For example, a substantially flat electronic component in which an IC chip, a chip resistor, a chip capacitor, various sensing devices, and the like are mounted on an LSI chip, a printed board, or a glass substrate can be suitably accommodated.

The cushioning materials 3 and 4 are made of a foam such as a natural foam or a synthetic foam such as a soft sponge having elasticity capable of compressive deformation and bending deformation, or a soft rubber or the like formed into a substantially flat plate shape. Can be suitably used. Examples of synthetic foams include thermoplastic resin foams such as polystyrene foam, polyethylene foam, polypropylene foam, vinyl chloride foam, viscose sponge, rubber foam, EVA foam, ABS foam, nylon foam, acrylic foam, urethane foam, and phenol foam. Thermosetting resin foams such as urea foam, silicone foam, epoxy foam, and a laminate of these foams can be suitably used. Although it is possible to use a closed-cell foam, it is preferable to use a continuous-cell foam that is easily compressed and deformed. When the electronic component as described above is accommodated as the container A, the cushioning members 3 and 4 are made of a conductive material to prevent damage to the electronic component due to static electricity. The cushioning members 3 and 4 may be made of the same material or different materials.
Further, the shapes of the cushioning materials 3 and 4 can be arbitrarily set according to the shape of the storage material A and the like.

One side of the inner and outer cases 10 and 20 is rotatably connected via a hinge 5. Both cases 1
For Nos. 0 and 20, it is preferable to integrally manufacture a synthetic resin sheet material by sheet forming such as vacuum forming or air-pressure vacuum forming in order to reduce the manufacturing cost, but it may be formed by injection molding or the like. The inner and outer cases 10 and 20 can be divided. However, if the inner and outer cases 10 and 20 are connected via the hinge part 5 as in the present embodiment, the two cases 10 and 20 do not fall apart. This is preferable because management and storage become easy. The shape of the inner and outer cases 10, 20
It can be set according to the shape and the like of the container A.

Next, the specific configurations of the inner case 10 and the outer case 20 will be described. The inner case 10 includes inner and outer double side walls 11 and 12 having upper ends connected to each other.
1 is formed in a tray shape having a bottom wall portion 13 connected to a lower end portion thereof, and a flange portion 1 extending outward is provided at a lower end portion of the outer wall portion 12.
4 is formed, and a notch 15 is formed in the middle of the free end side of the flange 14.

A mounting step 16 is provided in the middle of the inner wall 11.
Is formed below the mounting step 16 of the inner wall 11, and a lower side wall 11 a is formed.
The upper side wall 11b is formed above the upper side 6, and the lower side wall 11a is disposed inside the upper side wall 11b. The inner surface size of the upper side wall 11b is configured to a size that matches the outer size of the cushioning material 3, and
By fitting the cushioning material 3 inside the b, and placing the outer peripheral portion on the mounting step 16, the movement of the cushioning material 3 in the depth direction is restricted, and the back side of the cushioning material 3, that is, the cushioning material 3 and bottom wall 1
A space 17 corresponding to the height of the lower side wall portion 11a is formed between the spaces 3, and the space 17 allows the cushioning material 3 to be bent and deformed.

The upper side wall portion 11b is integrally formed with a claw portion 18 which faces the mounting step portion 16 and protrudes inward. The claw portion 18 has an inclined surface 18a that protrudes inward as the claw portion 18 is separated from the mounting step portion 16, and holds the outer peripheral portion of the cushioning material 3 between the inclined surface 18a and the mounting step portion 16. , The cushioning material 3 is fixed to the inner case 10. The claw portions 18 may be formed over the entire circumference of the side wall portion, but are preferably formed at predetermined intervals because the inner case 10 is difficult to release during molding. However,
The shape of the claw portion 18 may be formed in a shape other than that illustrated. Further, the claw portion 18 may be omitted, and the cushioning material 3 may be fixed to the inner case 10 with an adhesive or a double-sided tape.

The outer case 20 (upper case) is formed in a bottomed tray shape having a side wall 21 and an upper wall 22, and a lower end (opening end) of the side wall 21 is directed outward. An extended flange portion 24 is integrally formed, and an opening / closing projection 25 projecting outward is provided at an intermediate portion of the side of the free end side of the flange portion 24 so as to correspond to the cutout portion 15 of the inner case 10 and integrally. Is formed. The outer case 20 is configured to be easily opened and closed by operating the opening and closing projection 25 through the cutout 15. However, the flange 24 and the opening / closing projection 25 are
It is not always necessary and can be omitted.

A mounting step 26 is formed in the middle of the side wall 21, and an upper side wall 21 b is formed above the mounting step 26 of the side wall 21. A lower side wall 21a is formed below the portion 26, and the upper side wall 21b is arranged inside the lower side wall 21a. The inner surface size of the lower side wall 21a is configured to be a size compatible with the outer size of the cushioning material 4, and the lower side wall 21a
By fitting the cushioning material 4 inside the inside and placing the outer peripheral portion on the mounting step 26, the movement of the cushioning material 4 in the depth direction is restricted, and the back side of the cushioning material 4, that is, the cushioning material 4 And upper wall 22
A space 27 corresponding to the height of the upper side wall portion 21b is formed therebetween, and the space 27 is configured such that bending deformation of the cushioning material 4 is allowed.

The lower side wall 21a is integrally formed with a claw 28 which faces the mounting step 26 and protrudes inward. The claw portion 28 has an inclined surface 28a protruding inward as the claw portion 28 is separated from the mounting step portion 26, and holds the outer peripheral portion of the cushioning material 4 between the inclined surface 28a and the mounting step portion 26. The cushioning member 4 is fixed to the outer case 20. The claw portions 28 may be formed over the entire periphery of the side wall portion, but are preferably formed at predetermined intervals because it is difficult to release the outer case 20 during molding. However,
The shape of the claw portion 28 may be formed in a shape other than that illustrated. Further, the claw portion 28 may be omitted, and the cushioning material 4 may be fixed to the outer case 20 with an adhesive or a double-sided tape.

A projecting portion 19 projecting outward is formed in the middle of the outer wall 12 of the inner case 10 on the free end side, and a concave portion 29 engaging with the projecting portion 19 is formed on the side wall 21 of the outer case 20. Is formed, and the housing case 1 is held in a closed state by the concave-convex fitting of the projection 19 and the concave portion 29. However, it is also possible to hold the housing case 1 in a closed state by a structure other than the concave-convex fitting. For example, as shown in FIG.
An insertion portion 30 formed of a slit or a long hole extending in the length direction is formed at an intermediate portion in the width direction of the flange portion 14, and the insertion piece 3 can be inserted into the insertion portion 30 in the flange portion 24 of the outer case 20.
1 may be formed to hold the storage case 1 in a closed state. As shown in FIG. 6B, a through hole 32 is formed in the side wall 21 of the outer case 20, and a protrusion 33 that engages with the through hole 32 is formed in the outer wall 12 of the inner case 10. Alternatively, the storage case 1 may be held in a closed state. Furthermore, the flanges 14 and 24 may be joined by an adhesive, an adhesive tape, or heat fusion to hold the housing case 1 in a closed state.

With the storage case 1 closed, the cushioning material 3
A constant gap 6 is formed between the four. The size of the gap 6 is set to a size slightly smaller than the thickness of the container A. However, when a relatively soft material is used as the cushioning members 3 and 4, the gap 6 between the cushioning members 3 and 4 can be eliminated.

In the storage case 1, the cushioning material 3,
5, the cushioning members 3, 4 are compressed and deformed, and the cushioning members 3, 4 are held.
When the cushioning members 3 and 4 are bent and deformed through the space 17 on the back surface side of the container 4, the container A is held. For this reason, it is possible to accommodate the contents A of various thicknesses without making the cushioning members 3 and 4 thick. In addition, shocks and vibrations to the storage case 1 are absorbed by the bending deformation of the cushioning materials 3 and 4 via the spaces 17 and 27 on the back side of the cushioning materials 3 and 4, and the cushioning materials 3 and 4 are moved upward. Wall 2
2 or the bottom wall 13 to be absorbed by being compressed and deformed. In other words, since the shock and vibration are effectively absorbed by the bending deformation and the compression deformation of the cushioning members 3 and 4, it is possible to employ a thin material as the cushioning members 3 and 4, and the manufacturing cost of the storage case 1 is increased. Can be reduced.

In the above-described embodiment, the spaces 17 and 27 allowing bending deformation are formed on the back sides of both cushioning members 3 and 4. However, the spaces are formed only on the back side of one of the cushioning members. It is also possible to configure so that no space is formed on the back side of the other cushioning material. For example, as in a storage case 1A shown in FIG. 7, an outer case 20A in which the mounting step 26 is omitted is used, and the upper cushioning material 4A is brought into close contact with the upper wall portion 22 of the outer case 20A without leaving a gap. You may.

[0027]

According to the storage case according to the present invention, the stored material is held between the pair of cushioning materials. At least one of the cushioning materials is made of a material which can be compressed and bent. Moreover, since a space for bending deformation is formed on the back surface of the cushioning material, it is possible to secure sufficient cushioning performance by compressive deformation and bending deformation of the cushioning material while reducing the thickness of the cushioning material. Becomes

When the claw portion for fixing the cushioning material is integrally formed on the side wall portion of the case, the cushioning material can be fixed without using an adhesive or the like. This is preferable because it can be easily formed without increasing the number of manufacturing steps and the like and increasing the manufacturing cost.

In the space for bending deformation formed on the back side of the cushioning material, a mounting step for mounting the outer peripheral portion of the cushioning material is integrally formed at an intermediate portion in the thickness direction of the case. With such a simple configuration, the case can be easily formed without lowering the moldability of the case or increasing the manufacturing cost. A hinge part that connects both cases rotatably is provided,
It is preferable to form the two cases and the hinge part integrally since the management and storage of the two cases become easy.

It is preferable that both cases are made of a synthetic resin sheet material because both cases can be manufactured at low cost by vacuum molding or the like. Further, in this case, the side wall of the case arranged inside is constituted by a double wall of an inner wall and an outer wall, and the cushioning material is fixed to the inner wall and the other side is fixed to the outer wall. By externally fitting the case, the strength and rigidity of the inner case can be improved, and the above-described claw portion and mounting step portion can be easily formed on the inner wall portion with respect to the case. . In the case where a substantially flat electronic component is accommodated as an object to be accommodated, damage to the electronic component due to static electricity can be prevented by using an electrically conductive material as the cushioning material.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a storage case.

FIG. 2 is a vertical cross-sectional view of the storage case at a position including a claw portion.

FIG. 3 is a vertical cross-sectional view of the storage case at a position not including a claw portion.

FIG. 4 is a longitudinal sectional view of a main part of the storage case in an exploded state.

FIG. 5 is an explanatory view of a use state of the storage case.

FIG. 6 is an explanatory view of a main part of another embodiment of the mechanism for closing the storage case.

FIG. 7 is an explanatory view of another storage case.

[Explanation of symbols]

 A Contents 1 Housing case 2 Case body 3 Buffer material 4 Buffer material 5 Hinge part 6 Gap 10 Inner case 11 Inner side wall part 11a Lower side wall part 11b Upper side wall part 12 Outer side wall part 13 Bottom wall part 14 Flange part 15 Notch part 16 Mounting step 17 Space 18 Claw 18a Inclined surface 19 Projection 20 Outer case 21 Side wall 21a Lower side wall 21b Upper side wall 22 Upper wall 24 Flange 25 Opening / closing projection 26 Mounting step 27 Space 28 Claw portion 28a Inclined surface 29 Depression 30 Insertion portion 31 Insertion piece 32 Through hole 33 Projection 1A Storage case 4A Buffer material 20A Outer case

Claims (7)

[Claims] 1. A pair of inner and outer cases that are fitted to each other, and a cushioning material respectively housed in both cases for holding the contents, wherein the cushioning material housed in at least one of the cases is compressed and deformed. An accommodating case comprising a material that can be bent and deformed, and wherein the cushioning material is fixed to a middle part in the thickness direction of one of the cases while leaving a space for bending deformation on the back surface side. 2. The storage case according to claim 1, wherein a claw portion for fixing a cushioning material is integrally formed on a side wall portion of the case. 3. A mounting step for mounting an outer peripheral portion of the cushioning material is formed integrally with the case in which the deformable cushioning material is provided, in a thickness direction of the case. Or the storage case according to 2. 4. The storage case according to claim 1, further comprising a hinge portion that rotatably connects the two cases, and wherein the two cases and the hinge portion are integrally formed. 5. The storage case according to claim 1, wherein the two cases are made of a synthetic resin sheet material. 6. A side wall portion of the case disposed on the inner side is constituted by a double wall portion of an inner side wall portion and an outer side wall portion, and a cushioning material is fixed to the inner side wall portion and the other side portion is fixed to the outer side wall portion. The storage case according to claim 5, wherein the case is externally fitted. 7. The storage case according to claim 1, wherein the storage object is a substantially flat electronic component, and a shock-absorbing material made of a conductive material is used.