JPH0940025A - Airtight container - Google Patents

Abstract

(57) [Summary] [Structure] Another pair of peripheral walls 111a and 111b having a height difference
A horizontal portion is formed on each end of the pair of peripheral walls 111c and 111d to form a peripheral portion.
The middle part of the walls 111c and 111d is formed in an inclined shape, and the horizontal part is formed.
From the pair of peripheral walls 111a, 111b having a height difference from
Mating ridge 190 and this and center line O₁Boundary paired with
And a center line O on the bottom surface. _FourAt the border
An airtight container which is formed with engaging portions that make a pair with each other. [Effect] Can the container body and lid be formed in the same shape?
It is possible to stack multiple containers in a locked state with each other.
Can also be used for in-store displays.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airtight container made of a foamed synthetic resin for accommodating vegetables, fruits and the like, which is used for transportation, storage, display at a store, etc.

[0002]

2. Description of the Related Art As a conventional airtight container made of foamed synthetic resin, for example, there is one shown in FIG. The airtight container A is formed of expanded polystyrene resin or the like,
It consists of a container body a with an open top surface and a lid b that closes the opening of this container body a. For example, a fitting ridge c formed on the upper end surface of the peripheral wall of the container body a and a container shown in FIG. The fitting groove d formed on the lower surface of the lid b is fitted to each other as shown in FIG. 46, so that the container can be closed in an airtight state. Further, as shown in FIG. 47, a convex portion e is formed on the lower surface of the container main body a, leaving the peripheral edge portion thereof. On the other hand, on the upper surface of the lid body b, as shown in FIG. As shown in FIG. 48, a plurality of airtight containers A are formed.
In the case of stacking up and down, the protrusions f on the upper surface of the lid b of the lower airtight container A and the protrusions e on the lower surface of the container body a of the upper airtight container A are locked, It is possible to stack a large number of airtight containers A ... While preventing the upper airtight containers A from slipping and further dropping.

By the way, in the above airtight container, since it is composed of two molded products of a container body and a lid having different shapes, two kinds of manufacturing dies are required, and manufacturing process control and Product inventory management, etc. must be performed for each of the containers while matching the numbers on the container body and lid. Therefore, a container has been devised in which the container body and the lid have the same shape. For example, as disclosed in Japanese Utility Model Publication No. 59-32682, as shown in FIG.
And a pair of opposing peripheral walls 21 of the container body 201.
One of the peripheral walls 211, 212 is formed higher than the other peripheral wall 212, and the other pair of opposing peripheral walls 213, 214 is
The peripheral walls are matched with the peripheral walls 211 and 212 having the height difference.
The depths of the peripheral wall 211 side and the peripheral wall 212 side are changed by inclining the middle of the upper edge of 213, 214, while the lid 202 also faces one peripheral wall 221 of one pair of facing peripheral walls 221, 222. One pair of peripheral walls 223 that are formed higher than the side peripheral wall 222 and that face each other.
As with the container body 201, the upper and lower edges of 224 and 224 are slanted to change the depth of the container to make it a container for exhibition.
Adjacent fitting portions x and y and x ′ and y ′ in each side portion are formed so that the convex portion p and the concave portion q are in an inward / outward inverse relationship, and x and x ′ in the opposing side portions are formed. Also, the convex portion p and the concave portion q are formed so as to have an inward / outward inverse relationship in y and y ′, so that the container body 201 and the lid body 202 are formed in exactly the same shape.

In the above container, the container main body 201 and the lid 202 have the same shape, but the lower surface of the container main body 201 and the upper surface of the lid 202 are simply formed in a flat shape, and as shown in FIG. No stop structure is provided. However, this type of foamed synthetic resin container is often stacked and transported and stored, and if the lower surface of the container body 201 and the upper surface of the lid body 202 are planar with each other, a plurality of containers can be used as shown in FIG. When they are stacked, they are very slippery, and there is a risk that the stacked upper containers may slip or even drop. However, when the container body 101 and the lid body 102 have the same shape as described above, on the lower surface of the container body 201 and the upper surface of the lid body 202, the protrusion e on the lower surface of the container body and the periphery of the upper surface of the lid body in the conventional container are formed. When the projections f are provided, the projections e having the same shape as shown in FIG. 51 or the projections f having the same shape as shown in FIG. Can not. Further, like the conventional container, when the central convex portion e is provided on one of the lower surface of the container main body 201 and the lid body 202 and the peripheral convex portion f is provided on the other, the container main body 201 and the lid body 202 are Cannot be molded into the same shape.

[0005]

The first object of the present invention is to make it possible to form the container body and the lid in the same shape, and to arrange the upper and lower containers even when a plurality of containers are stacked in a closed state. It is an object of the present invention to provide a stackable airtight container which can be locked to each other and prevent slipping. A second object of the present invention is to provide a stackable airtight container in which a plurality of container bodies can be locked with each other even when the container is in an open state and slipping is prevented. A further object of the present invention is to provide an airtight container which can be displayed in the container without rearranging the articles housed in the container, for example, at the time of over-the-counter sales.

[0006]

In order to achieve the above-mentioned object, an airtight container according to claim 1 of the present invention comprises a container body and a lid body made of a foamed synthetic resin. A fitting structure having the same shape that can be fitted to each other is formed at each of the joint parts with the body, and the same shape can be locked to the lower surface of the container body and the upper surface of the lid body. It forms a structure.

Specifically, as shown in the principle diagram shown in FIGS. 1 and 2, in a container composed of a container body 1 and a lid body 2, the container body 1 is joined to the joint portion 3 with the lid body 2 A first mating structure and a second mating structure capable of mating with each other are formed on one joint portion 3a and the other joint portion 3b with the dividing center line O ₁ as a boundary. Also in the lid body 2, just like the container body 1, at the joint portion 4 of the lid body 2 with the container body 1, one of the joint portions 4a and the other of the joint portion 4a with the center line O ₂ which divides the joint body 4 as a boundary. The first fitting structure and the second fitting structure, which have the same shape as the first and second fitting structures of the container body 1 and are paired with each other, are formed in the joint portion 4b of Therefore, the container body 1 and the lid body 2 are separated from each other in FIG.
When fitted together, the first fitting structure of the joining portion 3a of the joining portion 3 on the upper surface of the container body 1 and the second fitting structure of the joining portion 4b of the joining portion 4 on the lower surface of the lid 2 are mutually connected. While fitting, the second fitting structure of the joining portion 3b of the joining portion 3 on the upper surface of the container body 1 and the first fitting structure of the joining portion 4a of the joining portion 4 on the lower surface of the lid 2 are fitted together. Therefore, it is possible to form a fitting structure that has exactly the same shape as the container body 1 and the lid body 2 and that can fit the container body 1 and the lid body 2 in an airtight manner.

On the lower surface of the container body 1 and the upper surface of the lid body 2, as shown in the principle diagrams of FIGS.
To the lower surface 5 of the pair of first and second lower engaging portions 5a and 5b with the center line O ₃ dividing the half as a boundary. In addition to forming a stopper structure, the lid body 2 is similar to the container body 1 in that
On the upper surface 6 of the container body and on the upper surface portion 6a on one side and the upper surface portion 6b on the other side with the center line O ₄ dividing the same as the boundary, and having the same shape as the locking structure formed on the lower surface 5 of the container body. By forming the first locking structure and the second locking structure capable of locking in a pair, the locking can be locked to the container body lower surface 5 and the lid upper surface 6 in exactly the same shape and to each other. The structure can be formed. When these containers are stacked vertically as shown in FIG. 6, the first locking structure of one upper surface portion 6a of the lid upper surface 6 of the lower container and the container of the upper container The second locking structure of the lower surface portion 5b of the lower surface 5 of the main body is locked to each other, and is positioned higher than the second locking structure of the other upper surface portion 6b of the lid upper surface 6 of the lower container. The first locking structure of the lower surface portion 5a on the lower surface of the container body 1 is locked to each other, so that the lower surface of the container body 1 and the lid body 2 have exactly the same shape and the lid bodies 2 in the upper and lower stacked containers are stacked. The upper surface and the lower surface of the container body 1 can be locked to each other to form a locking structure capable of preventing slippage.

As described above, in the container according to the present invention, the fitting structure of the joint portions 3 and 4 of the container body 1 and the lid body 2 and the locking structure of the container body lower surface 5 and the lid body upper surface 6 are completely eliminated. Since they are formed in the same shape, as shown in FIG.
By combining the types of molded products X and Y, that is, 2
As shown in (1) to (4), only four types of molding dies can be used to configure four types of containers in which the depth of the container body 1 and the lid 2 are different. Further, in the same manner as described above, it is possible to construct an airtight container of a larger size by combining three or more types of molded products.

By constructing the container body and the lid body as described above, the container body and the lid body can be molded in exactly the same shape and can be hermetically fitted to each other, and a plurality of containers are stacked. In this case, the upper surface of the lid body and the lower surface of the container main body are engaged with each other, so that the airtight container can be prevented from slipping.

The airtight container according to claim 1 as described above,
When stacking containers on top of each other, the locking structure provided on the upper surface of the lid of the lower container and the lower surface of the container main body located on the upper position are engaged with each other, so that the upper container shifts or falls. There is nothing to do. Moreover, since the fitting structure provided at the joint between the container body and the lid body and the locking structure between the lower surface of the container body and the upper surface of the lid body have the same shape as the container body and the lid body, 1 body and lid
It can be composed of various types of molded articles. Also, by combining molded products having different heights, it is possible to configure various types of containers having different sizes of the container body and the lid.

Next, in an airtight container according to a second aspect of the present invention, the locking structure formed on the lower surface of the container body and the upper surface of the lid body is positioned and sized so as to be locked in the opening of the container body. Formed.

Specifically, as shown in FIG. 8, first and second lower surface portions 5a and 5b of the lower surface 5 of the container body 1 (the same applies to the upper surface 6 of the lid), and The second locking structure 7 is formed inward from the outer peripheral edge of the lower surface of the container body 1 within a range approximately the same as the width W of the peripheral wall 11 of the container body 1 or slightly larger than the width L thereof. With this structure, the locking structure formed on the lower surface 5 of the container body and the upper surface 6 of the lid body can be formed at a position and a size that can be fitted into the opening 9 of the container body 1. . The locking structure 7 formed on the lower surface 5 of the container body as described above
When a plurality of container bodies 1 (or lids 2) with the lids removed are stacked vertically as shown in FIG. 9,
Locking structure 7 formed on the lower surface of the container body 1 located at the upper level
Is locked in the opening 9 of the container body 1 located at the lower position to prevent the upper container body 1 from being displaced or dropped.

Further, in the case where the locking structure 7 formed on the lower surface 5 of the container body and the upper surface 6 of the lid as described above is formed in a position and a size that can be locked in the opening 9 of the container body 1. In the case where the locking convex portion 8 as shown in FIG. 10 is formed on the lower surface 5 of the container body (and the upper surface 6 of the lid) as the locking structure 7, the lower surface 5 of the container body is referred to as the center line O ₃ . ,
4 by the center line O ₅ which is further divided into two in the direction orthogonal to this
When the container main body 1 is stacked when the container main bodies 1 are stacked, if the locking projections 8, 8 of the same shape are formed on the diagonally located 5a ₁ and 5b ₂ portions or 5a ₂ and 5b ₁ portions The convex portions 8, 8 formed on the lower surface 5 of the upper container body are locked to the diagonal corners in the opening 9 of the lower container body 1 to form a lower container body. 1 and the upper container body 1 can be reliably locked.

As described above, the airtight container according to claim 2 is
Since the locking structure of the lower surface of the container body is formed in a position and size that can be locked in the opening of the container body, when a plurality of container bodies are stacked with the lid removed, It is possible to stack with the locking structure of the lower surface of the container main body located above in the opening of the container main body located in a locked state, and also the lids can be stacked vertically in a state where they are also locked together. .

Further, an airtight container according to a third aspect of the present invention is the above airtight container, wherein one of a pair of side walls of the peripheral wall of the container body facing each other is formed higher than the other. Specifically, for example, as shown in FIG. 11, one peripheral wall 11b of the pair of opposing peripheral walls 11a and 11b of the container body 1 is formed higher than the other peripheral wall 11a, and the other peripheral wall 11a is opposed to the other peripheral wall 11a. A pair of peripheral walls 11c and 11d are formed by connecting the peripheral walls 11a and 11b having a difference in height and inclining, and similarly, the lid body 2 is also one peripheral wall of the pair of opposing peripheral walls 12a and 12b. 12b is formed higher than the peripheral wall 12a on the opposite side, and another pair of peripheral walls 12c and 12d facing each other is formed to be inclined. Thus, the opposing peripheral walls 11a of the container body 1
In a container in which one of 11 and 11b is formed high, it is easy for the customer to see with vegetables, fruits, etc. left inside the container,
Also, the contents can be displayed without refilling.

As shown in FIG. 11, also in this container usable for display, as in the case of the above-mentioned airtight container, one joint portion 3a of the joint portion 3 with the lid body 2 of the container body 1 is formed.
And a mating first part 3b which can be fitted to the other joint part 3b.
A second fitting structure is formed, and one joint part 4a of the joint part 4 with the container body 1 and the other joint part 4b of the lid body 2 have the same shape as the fitting structure of the container body 1 with each other. By forming the first and second fitting structures that can be fitted to form a pair, when the container body 1 and the lid body 2 are fitted together as shown in FIG. And the second fitting structure of the joining portion 4b of the joining portion 4 of the lid body 2 are fitted to each other, and the first fitting structure of the joining portion 3b of the container body 1 The fitting structure of No. 2 and the first fitting structure of the joining portion 4a of the joining portion 4 of the lid body 2 are fitted to each other, so that the container body 1 and the lid body 2 have exactly the same shape and A fitting structure capable of air-tightly fitting 1 and the lid 2 can be formed.

Also on the lower surface 5 of the container body and the upper surface 6 of the lid body, as shown in FIG. 13, it is possible to engage one lower surface portion 5a and the other lower surface portion 5b of the lower surface 5 of the container body in pairs. The first and second locking structures are formed, and the one upper surface portion 6a and the other upper surface portion 6b of the lid upper surface 6 can be locked in the same shape as the container body lower surface 5 and pair with each other. , Second
By forming the locking structure of 2, the container main body 1 and the lid body 2 can have the same shape, and the container main body 1 and the lid body 2 can be locked with each other. And when this container is stacked vertically as shown in FIG. 14,
First locking structure of the upper surface portion 6a of the lid upper surface 6 of the lower container and the lower surface 5 of the container body of the upper container
And the second locking structure of the lower surface portion 5b of the upper part of the container body lower surface 5 and the second locking structure of the upper surface portion 6b of the lower lid upper surface 6 of the container Since the first locking structure of the lower surface portion 5a is locked to each other, the lid body upper surface 6 and the container body lower surface of the upper and lower containers having the same shape on the lower surface of the container body 1 and the lid body 2 are exactly the same. 5 and 5 can be locked to each other to form a locking structure that prevents slippage.

Further, as shown in FIG. 15, the locking projections 8 as the first and second locking structures formed on the lower surface 5 of the container body 1 (the upper surface 6 of the lid 2 is the same). , 8 inward from the outer peripheral edge of the lower surface 5 of the container body 1 to the peripheral wall 11 of the container body 1.
The width W is substantially the same as or slightly larger than the width W. With this configuration,
The locking structure formed on the lower surface 5 of the container body and the upper surface 6 of the lid body can be formed in such a position and size as to be locked in the opening 9 of the container body 1. As described above, the bottom surface 5 of the container body
As shown in FIGS. 16 (a) and 16 (b), when the plurality of container bodies 1 with the lids removed are vertically stacked, the locking structure formed in FIG. By locking the locking projection 8 formed as the locking structure on the lower surface of the inside of the opening 9 of the container body 1 located at the lower position, the upper container body 1 is prevented from being displaced or dropped. .

Further, as this locking structure, as shown in FIG. 15, center lines O ₃ and O ₅ orthogonal to each other are formed on the lower surface 5 of the container body.
Due to this, the front and rear and right and left are in a pair of four-divided locking structure, for example, 5a ₁ and 5b ₂ portions located diagonally, or 5a ₂ and 5b ₁
If the locking projections 8 are formed on the portions, the locking projections 8 formed on the lower surface 5 of the container body located at the upper position when a plurality of container bodies 1 are stacked as shown in FIG. , 8 are locked to diagonally positioned corners in the opening 9 of the lower container body 1 to more reliably lock the lower container body 1 and the upper container body 1. You can

Further, in the airtight container according to claim 3, one of a pair of side walls facing each other in the peripheral wall of the container body in the airtight container as described above is formed higher than the other, so that a retail store front For sale at, etc., if the lid is removed from the container body and the side wall with a low height is used as a display container, the vegetables and fruits stored in the container body through the side wall with a low height can be used. You can easily overlook the stored items such as.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to specific embodiments shown in the accompanying drawings.

FIG. 17 shows an embodiment of the airtight container according to the present invention. This airtight container is made of, for example, a foamed styrene resin such as foamed polystyrene, a foamed olefin resin such as foamed polyethylene or polypropylene, or a foamed synthetic resin such as a copolymer resin thereof, and a lid body. It is composed of 102 and. The container body 101 is formed in a box shape having a rectangular shape in plan view and opening upward, and is divided into two by a center line O ₁ on an upper end surface 103 of a peripheral wall 111 which is a joint portion with a lid body 102. On the other hand, on 103a, a fitting ridge 121 as a first fitting structure is formed on the inner side of the upper end surface 103, and
On the other upper end surface 103b of the peripheral wall 111, the fitting projection
The second member is placed on the outer side of the upper end surface 103b so as to form a pair with the second member 121.
A fitting convex strip 122 is formed as a fitting structure of the. On the other hand, the lid body 102 is formed in a box-like shape having a substantially rectangular shape in plan view and opening downward like the container body 101, and at a lower end surface 104 of a peripheral wall 112 which is a joint portion with the container body 101. On the other hand, 104a divided into _two by the center line O ₂ has the upper end surface
The fitting ridges 12 as the first fitting structure by being placed inside the 104
3 is formed, and the other upper end surface 104b of the peripheral wall 112 is fitted to the outside of the upper end surface 103b so as to be paired with the fitting convex strip 123, and a fitting convex as a second fitting structure. Article 124 is formed. The container body 101 and the lid
The fitting structure formed at the joint with 102 is shown in FIG.
As shown in (b), the mating ridges 121 and 124 are paired with each other.
And 122 and 123 are fitted to hermetically close the container. The airtight fitting structure provided at the joint between the container body 101 and the lid body 102 is not limited to the above, and various fitting structures as shown in FIGS. 19 to 23 are adopted, for example. can do.

The lower surface 105 of the container body 101 and the lid 10
As shown in FIG. 24, the upper surface 106 of the second main body 101 is located on the lower surface 105 of the container main body 101 at a position slightly centered on one lower surface part 105a with the center line O ₃ dividing the same as the boundary. Forming a locking convex portion 126 as a locking structure of the other bottom surface portion 105b
In the same manner as the first locking structure, a locking ridge 127 is formed on the lower peripheral edge so as to form a pair with the first locking structure, and the lid body 102 is the same as the container body 101, and the upper surface of the lid body 102 is the same. 106
In addition, a locking projection as a first locking structure and a second locking structure that form a pair on the upper surface portion 106a on one side and the upper surface portion 106b on the other side with the center line O ₄ dividing the same as the boundary as a boundary. A portion 128 and a locking ridge 129 are formed.

In the above airtight container, as shown in FIG. 25, the fitting ridges 121 and 122 of the container body 101 are fitted to the fitting ridges 124 and 123 of the lid body 102 so that an airtight state is obtained. It can be closed. Further, as shown in FIG. 26, when the airtight containers are vertically stacked, the locking projections 128 and the locking projections 129 of the lid upper surface 106 of the lower container are respectively positioned higher. Locking ridges on the bottom surface 105 of the container body
It is locked to 127 and the locking projection 126. As described above, in the present airtight container, the container main body 101 and the lid body 102 can be formed in exactly the same shape, and a plurality of airtight containers can be vertically stacked in a state of being locked to each other.

FIG. 27 shows still another embodiment of the airtight fitting structure formed at the joint between the container body 101 and the lid 102. In the fitting structure shown in FIG. 27 (a), a fitting protrusion 130 is formed on the peripheral wall 111 of the container main body 101 at a substantially central portion of the upper end surface in the width direction, and the peripheral wall 112 of the lid body 102 is formed.
A fitting concave line 131 that fits with the fitting convex line 130 is formed on the lower end surface, and the fitting concave line 131 is formed from the upper surface 106 of the lid 102.
The through hole 132 is formed toward the bottom surface of the 131. Further, in the fitting structure shown in FIG. 27 (b), the container body 101
The peripheral wall 111 of the cover 102 has a fitting groove 133 formed on the upper end surface thereof, and the peripheral wall 112 of the lid 102 has a lower surface of the cover member 102 having a fitting protrusion 134 for fitting with the fitting concave line 133 and an upper surface of the lid body 102. The through hole 135 is formed from 106 toward the tip end surface of the fitting convex strip 134. If such through-holes 132 and 135 are provided at appropriate places in the fitting portion between the container body 101 and the lid body 102, for example, at predetermined intervals, the fitting recesses are formed when the container body 101 and the lid body 102 are fitted. The air staying in the strips 131 and 133 is discharged to the outside, and the air staying in the mating recessed strips 131 and 133 is compressed, so that the lid body 102 is lifted up, and the lid body 102 is removed to keep the airtight state. You can prevent it from being destroyed,
It is easy to close the lid and it is possible to automatically close the lid by mechanization.

Further, as shown in FIG. 28, as described above, a through hole is formed from the upper surface 106 of the lid 102 toward the bottom surface of the fitting recess 131 of the airtight fitting structure or toward the tip end surface of the fitting projection 134. 132, 13
5 and at the same time, the mating groove 131 or the mating groove 133 is formed.
Connect the communication grooves 136 and 137 that communicate from the
It is formed on the outer surface or the inner surface of the mating groove 131, or the inner surface of the mating groove 133 or the outer surface of the mating protrusion 134, and discharges the air in the container compressed by the lid to the outside. The lid 102 is prevented from being lifted up due to the increase in the container internal pressure, and the lid 102 is prevented from coming off. Further, the lid closing work is further facilitated, and the automatic lid closing work by mechanization is enabled. Further, in this case, the through hole 132 and the communication groove 136,
Alternatively, as a ventilation path that communicates with the inside and outside of the container, which includes the through hole 135 and the communication groove 137, free air flow is impeded when there is no pressure difference between the inside and outside of the container, and at the same time, for example, this container is housed in a vacuum chamber. When the pressure inside the container is different from that inside the container, it is possible to circulate the air inside and outside the container, such as when the container is evacuated or decompressed to a vacuum state in the vacuum chamber and then taken out from the vacuum chamber. By setting such ventilation resistance, the vacuum precooling work can be performed with the lid closed, and the precooling work at the time of shipping vegetables, fruits, etc. can be efficiently performed.

In addition to this, free air circulation is impeded when there is no pressure difference between the inside and outside of the container, and at the same time air circulation is possible when there is a pressure difference, allowing vacuum precooling with the lid closed. As a structure for forming such a container, for example, structures as shown in FIGS. 29 and 30 can also be adopted.
This is because the fitting ridges 121 and 122 as the airtight fitting structure formed on the upper end surface 103 of the peripheral wall as the joint portion with the lid body 102 in the container body 101, and the lower end surface of the peripheral wall as the joint portion of the lid body 102. By forming the fitting ridges 123 and 124 formed in 104 with a gap D between their ends, as shown in FIG. 31, the ventilation for communicating the inside and outside of the container when the lid is closed. The route R is formed. In this case, the ventilation resistance in the ventilation path R changes depending on the width of the fitting projections 121 and 122 and the size of the gap D between the ends thereof, and means for further adjusting the ventilation resistance of the ventilation path R. As shown in FIG. 32, for example, as shown in FIG.
It is also possible to increase the ventilation resistance by lengthening the distance between the inside and outside of the container by the ventilation path R by forming an oblique cutout in the intermediate portion of the fitting convex strips 123, 124 of the lid 102 and the lid 102. is there.

The airtight fitting structure formed on the peripheral wall upper end surface 103 as the joint portion in the container main body 101 and the peripheral wall lower end surface 104 as the joint portion in the lid body 102 has the same structure as that of the above embodiment. Although it may be provided continuously on the circumference, for example, as shown in FIG. 33, a fitting convex strip 130 and a mating concave strip 133 forming a pair with the fitting convex strip 130 are provided on a part of the peripheral wall upper end surface 103 as a joint portion. Alternatively, a plurality of fitting protrusions 130 and a plurality of fitting recesses 133 may be provided. Further, as shown in FIG.
Alternatively, the fitting recessed strips 133 may be provided alternately.
Further, as the fitting structure, in addition to the fitting structure of the convex strip and the concave strip as described above, for example, the fitting convex part 138 and the mating concave part 139 paired therewith as shown in FIG. 35 are fitted together. It may be a structure.
Although the container body 101 has been described here, the lid 10
The fitting structure in 2 is also the same as that of the container body 101.

Next, as shown in FIG. 36, the container body 101
10 shows another embodiment of the locking structure formed on the lower surface 105 of the lower surface 105a of one of the lower surface portions 105a, where a substantially L-shaped locking ridge 140 is formed on one corner portion of the lower surface portion 105a, and a corner portion adjacent to this is formed. A locking projection 141 that forms a pair with the locking projection 140 is formed slightly inward, and a locking projection that pairs with the locking projection 140 is formed at one corner of the other lower surface portion 105b. The part 142 and a locking ridge 143 forming a pair with the locking projection 142 are formed.

Further, the one shown in FIG.
Another embodiment of the locking structure formed on the lower surface 105 of Fig. 1 is shown, but here, as the locking structure, the locking convex portion 144 is formed from the center of one lower surface portion 105a, and the other lower surface portion is formed.
A locking projection 145 that forms a pair with the locking projection 144 is formed on 105b, and the peripheral wall 11 of the container body 101 shown in FIG. 37 (b) is formed.
The distance L from the peripheral portions of the locking projections 144 and the locking projections 145 is approximately the width W _{1 of} the peripheral wall so that the locking projections 144 and the locking projections 145 can be locked in the opening 109 of 1 or the inner surface of the fitting projection 130. A plurality of the container bodies 1 are vertically stacked by providing the same or a slightly larger distance on the inner side, or by making the distance W ₂ from the peripheral edge of the peripheral wall 111 to the inner surface of the fitting projection 130 substantially the same or larger. At this time, a plurality of container bodies 101 can be stacked vertically while the locking projections 145 of the lower surface 105 are fitted and locked in the opening 109 or the inner surface of the fitting projection 130.

Further, FIG. 38 shows the container body 10
3 is another embodiment of the locking structure formed on the lower surface 105 of 1.
Here, one lower surface portion 105a and 105b on the lower surface 105
And a plurality of locking projections 146 to 149 are formed radially so as to lock each other in a fitted state, and the outer edge of each locking projection 146 to 149 is formed on the container body 101. Opening 109
It is formed in a position and size that can be locked inside. If the plurality of locking projections 146 to 149 are radially formed on the lower surface 105 of the container body 101 and the upper surface 106 of the lid body 102 as described above, for example, as shown in FIG. 39 and FIG. When the container body 101 is placed on it as a stand, the locking projections 146 to 149 on the lower surface 105 of the container body 101 and the lid body 102 can be used.
By changing the locking position with the locking projections 146 to 149 of the upper surface 106 of the container main body 101, the orientation of the container main body 101 can be changed.
101 and the lid 102 can be locked. Furthermore, by further increasing the number of the radial locking projections 146 to 149, the direction of the container body 101 can be changed at smaller angles.

FIG. 41 shows still another embodiment of the airtight container according to the present invention. here,
A pair of opposing peripheral wall portions 111a in the container body 101,
One peripheral wall portion 111b of 111b is formed to be higher than the other peripheral wall portion 111a, and the other pair of opposing peripheral wall portions 111c and 111d have peripheral wall portions 111a and 111b whose upper end faces have the height difference. It is formed in a slanted state. Also in this airtight container, the first fitting structure 151 and the second fitting structure 152 paired with the first fitting structure 151 are provided at the joint portion of the container body 101 with the center line O ₁ interposed therebetween. ,or,
The lid 102 is formed with a first fitting structure 161 and a second fitting structure 162 which is paired with the first fitting structure 161 with the center line O ₂ interposed therebetween, exactly like the container body 101. On the lower surface 105 of the main body 101, for example, as shown in FIG. 42, a first locking structure 171 and a second locking structure paired with the first locking structure 171 with a center line O ₃ interposed therebetween.
172 is formed on the other hand, and on the upper surface 106 of the lid body 102, the first locking structure 181 and the second engaging member paired with the first locking structure 181 with the center line O ₄ sandwiched therebetween just like the container body 101. Stop structure 18
2 is formed, and the container body 101 and the lid body 102 have exactly the same shape, and moreover, a plurality of containers can be stacked in a vertically stacked state as an exhibition container.

Also, FIG. 43 shows another embodiment of the airtight container which can be used not only for transportation but also for display as in the above. Here, one pair with height difference is used. Of the other pair of peripheral walls 111c and 111b between the peripheral walls 111c and 111b, a horizontal portion is formed at an end of the pair of peripheral walls 111c and 111d to form an inclined middle portion, and at the same time, the pair of peripheral walls having a height difference from the horizontal portion. A fitting convex strip 190 and a fitting concave strip 191 paired therewith are formed between 111a and 111b. Also in this airtight container, the fitting structure formed at the joint between the container body 101 and the lid body 102, the locking structure formed at the container body lower surface 105 and the lid body upper surface 106, etc. are described above. It goes without saying that various types can be adopted as in the various examples.

[0035]

According to the airtight container of the first aspect of the present invention, a fitting structure having the same shape and capable of being fitted to each other is formed at each of the joint portions of the container body and the lid, and the lower surface of the container body and the lid are joined together. Since the locking structure which can be locked with each other and has the same shape is formed on the upper surface of the body, the container body and the lid body can be made to have exactly the same shape. There is no need to mold two types of molded products, and both the container body and lid can be molded with one mold, which can streamline manufacturing costs and facilitates manufacturing process management and product inventory management. Become. Moreover, in this airtight container, even when a plurality of containers are stacked vertically, the upper surface of the lid of the lower container and the lower surface of the main body of the upper container are locked, and the stacked containers are misaligned, Furthermore, it is possible to stack a plurality of containers vertically without dropping the upper container. Furthermore, by making the fitting structure of the joint part of the container main body and the locking structure of the lower surface of the container main body and the upper surface of the lid body common, it is possible to combine molded products of different heights to achieve a depth between the container body and the lid body. Different types of containers can be configured, and in that case, the total inventory of these products can be reduced, and the manufacturing process control, product inventory control, etc. can be rationalized.

The airtight container according to a second aspect of the present invention is such that, in the airtight container, the locking structure formed on the lower surface of the container body and the upper surface of the lid body can be locked in the opening of the container body. Therefore, when stacking multiple container bodies with the lid removed, the locking structure on the lower surface of the upper container body is locked in the opening of the lower container body. In this condition, the upper containers can be stacked without slipping or dropping.

Further, in the airtight container according to claim 3, one of the pair of side walls facing each other in the peripheral wall of the container body of the above airtight container is formed higher than the other.
Use as a container to store vegetables, fruits, etc. and close them, and transport them in a pre-cooled state by a pre-cooling method such as a vacuum pre-cooling method as needed, and at the same time sell them at retail stores, etc. By removing the body from the container body and keeping the side wall with a low height on the front side, you can easily look over the stored items such as vegetables and fruits stored in the container body, and use it as it is as a container for exhibition Therefore, it is possible to save the trouble of rearranging the display shelves and the display containers.

[Brief description of drawings]

FIG. 1 is a perspective view showing the principle of a fitting structure of a joint portion between a container body and a lid in an airtight container according to the present invention.

FIG. 2 is a plan view showing the principle of the joint structure between the container body and the lid in the airtight container according to the present invention.

FIG. 3 is a side view showing the principle of the fitting relationship between the container body and the lid in the airtight container.

FIG. 4 is a perspective view showing a principle of a locking structure between a lower surface of a container body and an upper surface of a lid in the airtight container.

FIG. 5 is a plan view showing the principle of the locking structure between the lower surface of the container body and the upper surface of the lid in the airtight container.

FIG. 6 is a side view showing the principle of the locking relationship between the lower surface of the container body and the upper surface of the lid in the airtight container.

FIG. 7 is an explanatory view showing a procedure for forming a plurality of airtight containers by combining molded products having different heights.

FIG. 8 is a principle explanatory view showing another aspect of the locking structure of the lower surface of the container body in the airtight container.

FIG. 9 is a side view showing a state in which container bodies or lids are stacked in the airtight container having the locking structure.

FIG. 10 is a principle explanatory view showing still another aspect of the locking structure of the lower surface of the container body in the airtight container.

FIG. 11 is a perspective view of a container body and a lid showing another embodiment of the airtight container according to the present invention.

FIG. 12 is a side view showing the principle of the fitting relationship between the container body and the lid in the airtight container.

FIG. 13 is a perspective view showing the principle of the locking structure between the lower surface of the container body and the upper surface of the lid in the airtight container.

FIG. 14 is a side view showing the principle of the locking relationship between the lower surface of the container body and the upper surface of the lid in the airtight container.

FIG. 15 is a perspective view showing the principle of another aspect of the locking relationship between the lower surface of the container body and the upper surface of the lid body in the airtight container.

16 (a) and 16 (b) are side views showing a state in which container bodies or lids of the airtight container are stacked.

FIG. 17 is a perspective view of a container body and a lid showing an airtight container according to an embodiment of the present invention.

18 (a) and 18 (b) are cross-sectional views of essential parts showing the fitting structure of the container body and the lid in the airtight container.

19 (a) and 19 (b) are cross-sectional views of essential parts showing another example of the fitting structure of the container body and the lid in the airtight container.

FIG. 20 (a) and FIG. 20 (b) are cross-sectional views of essential parts showing another example of the fitting structure of the container body and the lid in the airtight container.

21 (a) and 21 (b) are cross-sectional views of essential parts showing another example of the fitting structure of the container body and the lid in the airtight container.

22 (a) and 22 (b) are cross-sectional views of essential parts showing another example of the fitting structure of the container body and the lid in the airtight container.

FIG. 23 (a) and FIG. 23 (b) are cross-sectional views of essential parts showing another example of the fitting structure of the container body and the lid in the airtight container.

FIG. 24 is a perspective view of the container body and the lid, showing an example of a locking structure between the lower surface of the container body and the upper surface of the lid in the airtight container.

FIG. 25 is a side view showing the fitting relationship between the container body and the lid of the airtight container.

FIG. 26 is a side view showing the locking relationship between the lower surface of the container body and the upper surface of the lid in the airtight container.

27 (a) and 27 (b) are sectional views of essential parts showing another embodiment of the fitting structure of the container body and the lid in the airtight container.

28 (a) and 28 (b) are cross-sectional views of essential parts showing another embodiment of the fitting structure of the container body and the lid in the airtight container.

FIG. 29 is a perspective view of a main part of the container body showing another embodiment of the fitting structure of the container body and the lid in the airtight container.

FIG. 30 is a plan view of the main part of the container body showing the fitting structure.

FIG. 31 is a cross-sectional view of a fitting portion in the airtight container.

FIG. 32 is a cross-sectional view of a fitting portion showing still another embodiment of the fitting structure.

FIG. 33 is a perspective view of a container body showing another embodiment of the fitting structure.

FIG. 34 is a perspective view of a container body showing another embodiment of the fitting structure.

FIG. 35 shows another embodiment of the fitting structure,
(A) is a perspective view of a container main body, (b) is an enlarged perspective view of the principal part.

FIG. 36 is a perspective view showing an example of the locking structure of the lower surface of the container body.

FIG. 37 is a perspective view of a container body showing another embodiment of the locking structure of the lower surface of the container body, (a) showing the container body in an inverted state, and (b) showing the container body facing upward.

38 is a perspective view showing still another embodiment of the locking structure on the lower surface of the container body. FIG.

FIG. 39 is an explanatory plan view showing a state in which the angle of the container main body placed on the lid is changed.

FIG. 40 is a perspective view showing a state in which the container body is placed on the lid body while changing the angle.

FIG. 41 is a perspective view of the airtight container according to another embodiment of the present invention with the lid open.

42 is a perspective view of the container body and the lid, showing a locking structure between the lower surface of the container body and the upper surface of the lid. FIG.

FIG. 43 is a perspective view of a container body and a lid showing still another embodiment of the airtight container according to the present invention.

FIG. 44 is a perspective view of an example of a conventional airtight container in an open state.

FIG. 45 is a perspective view of the airtight container in a state where the lid is inverted.

FIG. 46 is a cross-sectional view of a main part showing a fitting structure of a container body and a lid in the airtight container.

FIG. 47 is a perspective view of the airtight container with the container body inverted.

FIG. 48 is a side sectional view showing a state in which a plurality of the airtight containers are stacked.

FIG. 49 is a perspective view of a container body and a lid body showing another example of a conventional container.

FIG. 50 is a side view showing a state in which a plurality of the container bodies are stacked.

FIG. 51 is a side view showing a state in which containers having other structures are stacked.

52 is a side sectional view showing a state in which containers having still another structure are stacked. FIG.

[Explanation of symbols]

1: Container body, 2: Lid body, 3: Joining part, 4: Joining part, 5: Container body lower surface, 6: Lid body upper surface, 7: Locking structure, 8: Locking convex part, 9: Opening part, 11: Perimeter wall,
12, peripheral wall, 101: container body, 102: lid, 103:
Peripheral wall upper end surface, 104: peripheral wall lower end surface, 105: container main body lower surface, 106: lid upper surface, 109: opening, 111: peripheral wall, 112: peripheral wall, 121: fitting ridge, 122: fitting ridge, 123 : Fitting ridge, 124: Fitting ridge, 126: Locking ridge, 127: Locking ridge, 128: Locking ridge, 12
9: locking ridge, 130: mating ridge, 131: mating ridge,
132: Penetrating product, 133: Fitting concave line, 134: Fitting convex line, 135: Through hole, 136: Communication groove, 137: Communication hole, 138: Fitting convex part, 139: Fitting concave part, 140: Engagement Stop ridge, 141: locking projection, 142: locking projection, 14
3: locking ridges, 144: locking ridges, 145: locking ridges,
146: Locking convex part, 147: Locking convex part, 148: Locking convex part, 149: Locking convex part, 151: First fitting structure, 1
52: Second fitting structure, 161: First fitting structure, 162:
2nd fitting structure, 171: 1st locking structure, 172: 2nd
Locking structure, 181: first locking structure, 182: second locking structure, 190: fitting ridge, 191: fitting recess,
O ₁ : center line of container body joint, O ₂ : center line of lid body joint, O ₃ : center line of container body lower surface, O ₄ : center line of lid body upper surface, L: from peripheral edge of container body lower surface Distance to locking structure, R: ventilation path, W: width of peripheral wall of container body.

Claims (3)

[Claims] 1. A container body made of a foamed synthetic resin and a lid body, each of which has a fitting structure having the same shape and which can be fitted to each other at a joint portion of the container body and the lid body, An airtight container characterized in that a locking structure having the same shape is formed on the lower surface of the container body and the upper surface of the lid body so as to be locked to each other. 2. The airtight container according to claim 1, wherein the locking structure formed on the lower surface of the container body and the upper surface of the lid body is formed in a position and a size that can be locked in the opening of the container body. 3. The airtight container according to claim 1, wherein one of a pair of side walls facing each other on the peripheral wall of the container body is formed higher than the other.