JP2003026207A - Elastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elastic container capable of solving problems that a packing work is complicated, and the cost is increased because the sealability is insufficient and an adhesive tape is used in a conventional container. SOLUTION: This elastic container comprises a styrene foam container body 12 comprising a bottom wall 14 and peripheral walls 15 and 16 of the predetermined thickness erected from an outer peripheral edge of the bottom wall, and a styrene foam lid body 13 which is fitted to upper end parts of the peripheral walls to seal the inside of the container body. A recessed groove 17 of a substantially V-shaped section is provided in flat upper faces 15a and 16a of the upper end parts of the peripheral walls along the peripheral direction of the peripheral walls, and a projecting part 18 of a substantially V-shaped section to be fitted to the recessed groove is provided in a flat lower side 13b of an outer peripheral part 13a of the lid body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of an elastic material container made of expanded polystyrene, for example, which stores fresh fish and the like and is transported to markets or retail stores.

[0002]

2. Description of the Related Art As is well known, in order to transport landed fish and shellfish from a port to a market such as a city or a retail store by a truck or the like, a styrofoam container, which has a high heat insulation effect and is lightweight, is generally used. It is used.

This elastic material container 1, as shown in FIG.
It is composed of a container body 2 having an open upper end, and a lid body 3 that is fitted into the upper end opening 2a of the container body 2 to hermetically seal the inside.

The container body 2 is formed by integrally forming a relatively thick styrofoam into a box shape, and integrally stands up from a rectangular bottom wall 4 and respective long and short side edges of the bottom wall 4. It is provided with long and short side walls 5 and 6 in the shape of a plane rectangular frame which is a peripheral wall made of expanded polystyrene.

Further, the long and short side walls 5 and 6 have adjacent opposing edges continuously and integrally connected, and a convex portion 7 projecting from the inner edge of the upper surface of the upper end portion. The convex portion 7 is formed into a substantially square cross section and is integrally formed continuously in the circumferential direction of the upper end portion, and the inner surface 7a thereof is continuous with the inner surfaces 5a and 6a of the side walls 5 and 6 on the same plane. It is located in the position

On the other hand, the lid 3 has a relatively thick plate shape, and a concave groove 8 which fits into the convex portion 7 from above is formed on the lower surface of the outer peripheral portion 3a. Is the convex portion 7
Corresponding to the above, the cross section is formed into a substantially square shape and is continuously formed in the circumferential direction.

In use, first, fresh water or the like is immersed in ice water containing salt in the container body 2 to be housed therein, and then the lid body 3 is placed in the upper end opening 2a of the container body 2 from above. At this time, if the outer peripheral portion 3a of the lid 3 is pushed down from above as shown in FIG. 7 with the concave groove 8 of the lid 3 aligned with the convex portion 7 of the container main body 2 at this time. ,
The concave groove 8 is fitted to the convex portion 7 so that the two are closely contacted with each other. Then, a gap C between the container body 2 and the lid 3 on the outer peripheral side
An adhesive tape 9 is wound around the outer peripheral surfaces of the two and 3 so as to cover the two.

Therefore, the inside of the container body 2 and the lid body 3 are hermetically sealed by the tight fitting of the convex portion 7 and the concave groove 8 and the adhesive tape 9 to ensure the cold insulation property. ing.

[0009]

However, in the above-mentioned conventional elastic material container, due to the shapes of the convex portion 7 of the container body 2 and the concave groove 8 of the lid body 3, a sufficient cooling effect cannot be obtained. .

That is, since the cross-sectional shapes of the convex portion 7 and the concave groove 8 are formed in a simple substantially square shape, both sides of the convex portion 7 and the concave groove 8 face each other when these are fitted together. The contact area with the inner side surface cannot be made sufficiently large, and since the fitting is achieved by simple contact friction, sufficient adhesion cannot be obtained. In particular, when the gap C between the both 7 and 8 at the time of fitting becomes large due to a molding processing error of the convex portion 7 and the concave groove 8 or the like, the adhesiveness deteriorates.

As a result, there is a problem that the cold insulation power is reduced, and especially when the transportation time is long, the cold insulation cannot be maintained unless the adhesive tape 9 is removed and ice water is replaced again.

Further, if the adhesive tape 9 is removed and the lid 3 is repeatedly opened and closed with respect to the container body 2 by the inspection or the product determination by the brokerage or the like until the final retail store is reached, the convex portion is formed. There is a possibility that the contact surfaces of the portion 7 and the concave groove 8 are plastically deformed to increase the gap C and further reduce the adhesion.

Moreover, as described above, the adhesive tape 9 must be wound between the container body 2 and the lid 3 in order to ensure high airtightness, which not only increases the cost. The winding operation becomes complicated, and particularly, as described above, the winding operation and the removing operation must be repeated each time the ice water is replaced or the inspection work is performed, which makes the operation extremely complicated.

Furthermore, since the adhesive tape 9 is thrown away after use, a large amount of dust is inevitably generated, which causes a problem of environmental pollution.

[0015]

The present invention has been devised in view of the technical problems of the conventional elastic material container. The invention according to claim 1 is a bottom wall and an outer peripheral edge of the bottom wall. In an elastic material container comprising a container body consisting of a peripheral wall of a predetermined thickness rising from above, and a lid body which is fitted to the upper end portion of the peripheral wall to seal the inside of the container body, the upper end portion of the peripheral wall A concave groove or a convex portion having a substantially V-shaped cross section is provided on the upper surface along the circumferential direction of the peripheral wall, and a substantially V-shaped cross section that is elastically fitted to the concave groove or the convex portion on the lower surface of the outer peripheral portion of the lid. It is characterized in that a V-shaped convex portion or concave groove is provided along the circumferential direction.

According to a second aspect of the present invention, the concave groove is formed on the upper surface of the upper end portion of the peripheral wall, and the convex portion fitted in the concave groove is formed on the lower surface of the outer peripheral portion of the lid. It has a feature.

According to a third aspect of the present invention, the concave groove is formed on the lower surface of the outer peripheral portion of the lid, and the convex portion fitted into the concave groove is formed on the upper surface of the upper end portion of the peripheral wall. There is.

The invention according to claim 4 is characterized in that the width of the convex portion is set to be slightly larger than the width of the concave groove.

According to a fifth aspect of the present invention, while the engaging portion is provided at a predetermined position on the inner surface of the concave groove, the engaging portion is fitted to the outer surface of the convex portion when the lid is fitted. The feature is that a locking portion for locking is provided.

According to a sixth aspect of the present invention, the engaging portion is an engaging groove, and the engaging portion is an engaging protrusion engaging with the engaging groove.

According to a seventh aspect of the present invention, the engaging portion is an engaging projection, and the engaging portion is an engaging groove with which the engaging projection engages.

According to an eighth aspect of the present invention, the engaging portion or the engaging portion is continuously formed in the circumferential direction of the inner side surface of the concave groove, while the engaging portion or the engaging portion is formed in the convex portion. It is characterized in that it is formed continuously in the circumferential direction of the outer side surface of.

According to a ninth aspect of the present invention, a flat surface portion that abuts a flat surface near an opening edge of the concave groove when fitted to the concave groove at the base end edge of the convex portion on the inner side of the container body. Is formed.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an elastic material container according to the present invention will be described below in detail with reference to the drawings. In this embodiment, as an elastic material container, it is applied to a styrofoam container for storing and transporting seafood as in the conventional example.

That is, this styrofoam container 1
As shown in FIGS. 1 and 2, 1 is composed of a container body 12 having an open upper end, and a lid body 13 fitted in an upper end opening 12a of the container body 12 to hermetically seal the inside. Has been done.

The container body 12 is formed by integrally forming the relatively thick styrofoam material in the shape of a box, and integrally forming a rectangular bottom wall 14 and the long and short side edges of the bottom wall 14. Side wall 1 in the shape of a rectangular parallelepiped that is a peripheral wall rising up to the side
5 and 16 are provided.

Further, each of the long and short side walls 15, 16 is formed such that the thickness width W thereof is larger than that of the conventional one, the adjacent opposing edges are continuously and integrally connected, and the upper surface 15a of the upper end portion is formed. , 16a are formed with a groove 17 having a planar rectangular frame shape continuous in the circumferential direction.

The groove 17 is formed in a substantially V-shaped cross section, and is formed at the center position in the width direction of the upper surfaces 15a and 16a. Therefore, the groove 1
The upper surfaces 15a, 16a having flat inner and outer sides of the opening edge of No. 7
It has become.

On the other hand, the lid 13 is formed of a styrofoam material in a plate shape, and has a flat lower surface 13 on the outer peripheral portion 13a.
A convex portion 18 in the shape of a rectangular frame in plan view is provided so as to be fitted in the concave groove 17 from above in b.

The convex portion 18 is formed to have a substantially V-shaped cross section, which is substantially similar to the concave groove 17, and the height H thereof is slightly shorter than the depth D of the concave groove 17. Has been formed. In addition, the tapered inner and outer surfaces 18a,
The width W1 between the 18b is set to be larger than the width W2 between the tapered opposed inner side surfaces 17a and 17b of the concave groove 17 by a predetermined amount. Further, the flat lower surface 13b is formed on both inner and outer sides of the base end edge of the convex portion 18.

Therefore, in use, like the above-mentioned conventional example, first, fresh fish or the like is immersed in ice water containing salt in the container body 2 and then the upper end opening 12a of the container body 12 is covered. The body 13 is fitted from above, but at this time, the outer peripheral portion 13a of the lid body 13a with the convex portion 18 of the lid body 13 aligned with the concave groove 17 of the container body 12.
2 is pushed down from above, as shown in FIG.
The convex portions 18 are fitted to each other while being slightly elastically deformed, so that the two 17, 17 are elastically brought into close contact with each other.

At this time, the two members 17 and 18 are formed on both inner side surfaces 1.
7a, 17b and both outer side surfaces 18a, 18b are tapered, so that the contact area between them is larger than that in the vertical case. For this reason, the frictional resistance of both 17 and 18 becomes large, and a close and strong coupling state is obtained.

Therefore, the adhesion between the both 17 and 18 is increased, and the sealing performance inside the container body 12 is improved,
Cooling power increases.

As a result, good sealing performance can be maintained even after repeated use, and since it is not necessary to wrap an adhesive tape as in the conventional example, not only the packaging work becomes extremely easy, but also dust is discharged. It can also eliminate environmental problems.

In particular, the width W2 of both side surfaces 18a, 18b of the convex portion 18 is the width W1 of both inner side surfaces 17a, 17b of the concave groove 17.
Since it is sufficiently larger than the above, the pressure contact force between the two during the fitting of the both 17, 18 is increased, the adhesion force is further increased, sufficient sealing performance is obtained, and a high cold insulation effect can be obtained. .

Moreover, when the concave groove 17 and the convex portion 18 are fitted to each other, the upper surfaces 15a and 16a having flat inner surfaces and the lower surface 13b are in close contact with each other. The gap C1 between them and the inside of the container body 12 are cut off from each other so that they do not directly communicate with each other. That is, when the coupling gap C between the container body 12 and the lid 13 is viewed from the cross section side, the flat upper surfaces 15a and 16a and the lower surface 13b are in close contact with each other, and the convex inner surfaces 17a and 17b of the concave groove 17 and the convex surface are protruded. Part 1
8, both outer side surfaces 18a, 18b are in close contact with each other, and at the same time, the bottom surface 17c of the concave groove 17 and the tip lower surface 18c of the convex portion 18 are in close contact with each other, and the outer surfaces are also flat upper surfaces 15a, 16a and the lower surface 13
When b is in close contact, these contact surfaces are not in a simple crank shape, but in a complicated hat shape with a brim. In particular, since the inner upper surfaces 15a, 16a and the lower surface 13b are in close contact with each other to block direct communication with the concave groove 17 (gap C1), the sealing performance between the container body 12 and the lid body 13 is further enhanced. Become.

3 to 4 show a second embodiment of the present invention, in which a concave groove 17 is formed on the lid 13 side and a convex portion 18 is formed on the container body 12 side.

The specific structures of the concave groove 17 and the convex portion 18 are exactly the same as those of the first embodiment. Therefore, also in this embodiment, the same operational effect as that of the first embodiment described above can be obtained.

FIG. 5 shows the third embodiment of the present invention, and on the premise of the configuration of the concave groove 17 and the convex portion 18 of the second embodiment, the facing inner surface 17a of the concave groove 17 of the lid body 13, 17
Two engaging grooves 19a and 19b having a substantially arcuate cross section, which are engaging portions, are provided at substantially the central position in the vertical direction of b, while being extended along the circumferential direction, while both outer side surfaces of the convex portion 18 are provided. 18a,
18 cross-section substantially arc-shaped engaging portions that are elastically engaged with the engaging grooves 19a and 19b when the convex portion 18 is fitted in the concave groove 17 at a substantially central position in the vertical direction of the 18b. Protrusions 20a and 20b are provided.

Therefore, according to this embodiment, when the container body 12 is covered with the lid 13 and pressed from above during use, good sealing performance can be obtained by elastic contact between the groove 17 and the protrusion 18. Of course, both
Simultaneously with the fitting of 7 and 18, the engaging projections 20a and 20b are elastically engaged with the locking grooves 19a and 19b to be in close contact with each other, so that a higher sealing performance can be exhibited.

As a result, the cooling effect is further enhanced, and the joint strength of the lid 13 to the container body 12 is enhanced, so that accidental detachment during transportation can be sufficiently prevented, and thus, no adhesive tape is required. become.

Further, since the engaging grooves 19a, 19b and the engaging protrusions 20a, 20b are continuously formed in the circumferential direction, the contact frictional resistance between them is increased and the engaging strength is increased, which is sufficient. 1 with excellent sealing property and container body 12
The bond strength of 3 becomes high.

The present invention is not limited to the configuration of each of the above embodiments, and for example, the locking grooves 19a, 19b are provided.
Can be formed on the convex portion 18 side, and the engaging protrusions 20a and 20b can be formed on the concave groove 17 side. Further, the engaging grooves 19a and 19b and the engaging protrusion portions 20a and 20b can be circumferentially formed. It is also possible to form not the whole but intermittently in the circumferential direction. The wall thickness of the peripheral wall can be arbitrarily changed according to the size and shape of the container.

The elastic material is not limited to the polystyrene foam material, and various materials such as polyethylene, urethane rubber, and copolymerized foam can be used.

[0045]

As is apparent from the above description, claim 1
According to the invention described in any one of claims 1 to 3, the concave groove and the convex portion, which are provided in the container body and the lid body and have a substantially V-shaped cross section, are tapered on both inner side surfaces and both outer side surfaces. From
These contact areas are larger than those in the vertical case. For this reason, the frictional resistance between the concave groove and the convex portion becomes large, and a close and strong coupled state can be obtained.

Therefore, the adhesion between them is increased, the sealing performance inside the container body is improved, and the cold insulation power is increased.

As a result, good sealing performance can be maintained even after repeated use, and since it is not necessary to wrap an adhesive tape as in the conventional example, not only the packing work is extremely easy, but also dust is discharged. It can also eliminate environmental problems.

According to the fourth aspect of the present invention, the widths of both side surfaces of the convex portion are set to be larger than the widths of both inner side surfaces of the concave groove. It becomes larger, the adhesion is further enhanced, sufficient sealing performance is obtained, and a high cold insulation effect can be obtained.

According to the invention described in claims 5 to 7, since the engaging portion elastically engages with the engaging portion at the same time when the concave groove and the convex portion are fitted, the engaging portion is brought into a close contact state. High sealing performance can be demonstrated.

As a result, the effect of keeping cold is further enhanced, and the strength of coupling the lid to the container body is increased, so that accidental disengagement during use can be sufficiently prevented.

According to the invention described in claim 8, since the engaging portion and the engaging portion are continuously formed in the circumferential direction, the contact frictional resistance between them is increased and the engaging strength is increased. The sufficient sealing property and the bonding strength of the lid to the container body are increased.

According to the ninth aspect of the invention, since the flat portion blocks direct communication between the inside of the container body and the concave groove, the sealing performance is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a cross section of a main part of a container according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional perspective view of essential parts showing a state in which a lid is fitted on the container body of the container.

FIG. 3 is a perspective view showing a cross section of a main part of a container according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional perspective view of essential parts showing a state in which a lid is fitted on the container body of the container.

FIG. 5 is a perspective view showing a cross section of a main part of a container according to a third embodiment.

FIG. 6 is a perspective view showing a cross section of a main part of a conventional elastic material container.

FIG. 7 is a cross-sectional perspective view showing a state in which a lid is fitted on the container body of the conventional container.

[Explanation of symbols]

11 ... Styrofoam container (elastic material container) 12 ... Container body 13 ... Lid 13a ... outer peripheral portion 13b ... bottom surface 14 ... Bottom wall 15 ... long side wall 16 ... Short side wall 15a, 16a ... upper surface 17 ... Groove 17a, 17b ... Both inner side surfaces 18 ... Projection 18a, 18b ... Inner and outer surfaces C1 ... gap

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E067 AA11 AB02 AC01 BA05A                       BB17A BC06A BC07A CA18                       EA18 EA32 FA01 FC01 GA01                 3E084 AA05 AA14 AA24 BA01 CA03                       CB03 CC03 FA09 FC04 GA08                       GB12 HB02 HD01

Claims (9)

[Claims] 1. A container body comprising a bottom wall and a peripheral wall of a predetermined thickness rising from an outer peripheral edge of the bottom wall, and a lid body fitted to an upper end portion of the peripheral wall to seal the inside of the container body. In an elastic material container provided with, a concave groove or convex portion having a substantially V-shaped cross section is provided on an upper surface of an upper end portion of the peripheral wall along a circumferential direction of the peripheral wall, and the concave groove is formed on a lower surface of an outer peripheral portion of the lid. Alternatively, an elastic material container characterized in that a convex portion or a concave groove having a substantially V-shaped cross section which is elastically fitted to the convex portion is provided along the circumferential direction. 2. The recessed groove is formed on the upper surface of the upper end portion of the peripheral wall, while the convex portion that fits into the recessed groove is formed on the lower surface of the outer peripheral portion of the lid body. The elastic material container described. 3. The method according to claim 1, wherein the concave groove is formed on the lower surface of the outer peripheral portion of the lid, and the convex portion that fits into the concave groove is formed on the upper surface of the upper end portion of the peripheral wall. Elastic material container. 4. The elastic material container according to claim 1, wherein the width of the convex portion is set to be slightly larger than the width of the concave groove. 5. An engaging portion is provided at a predetermined position on the inner surface of the concave groove, and an engaging portion that engages with the engaging portion when the lid is fitted on the outer surface of the convex portion. It provided, The elastic material container in any one of Claims 1-4. 6. The elastic material container according to claim 5, wherein the engaging portion is an engaging groove, and the engaging portion is an engaging protrusion engaging with the engaging groove. 7. The elastic material container according to claim 5, wherein the engaging portion is an engaging protrusion, and the engaging portion is an engaging groove with which the engaging protrusion engages. . 8. The engaging portion or the engaging portion is continuously formed in the circumferential direction of the inner surface of the concave groove, while the engaging portion or the engaging portion is formed in the circumferential direction of the outer surface of the convex portion. It formed continuously, The elastic material container in any one of Claims 5-7 characterized by the above-mentioned. 9. A flat portion is formed on the base end edge of the convex portion on the inner side of the container main body, which comes into contact with a flat surface near the opening edge of the concave groove when fitted into the concave groove. The elastic material container according to claim 1.