JPH089392B2 - Airtight container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides an airtight fitting structure composed of a convex strip and a concave strip at a joint between a container body and a lid, and The present invention relates to an airtight container made of a foamed synthetic resin capable of maintaining a good airtight state, and more particularly, to facilitating the work of closing the lid with respect to the container body, and at the same time performing the airtight fitting at the time of the lid work. The internal pressure inside the recess in the mating structure rises, making it difficult to close the lid, or more extremely, the lid may rise slightly after the lid is closed, resulting in loose fitting, resulting in an airtight state. Becomes incomplete,
It relates to a good airtight container that prevents the effects of the airtight container from being adversely affected by the influence of outside air on the contents in the container and the outflow of cold air and heat inside. is there.

[Conventional technology]

As an airtight container made of foamed synthetic resin, an airtight fitting structure consisting of a convex ridge and a concave ridge fitted with the convex ridge is provided on one and the other of the joint surfaces of the container body and the lid when the lid is closed. There is something.

[Problems to be Solved by the Invention] However, in the case of an airtight container made of a foamed synthetic resin having an airtight fitting structure composed of a ridge and a groove as described above, the ridge is fitted into the groove when the lid is closed. As the air inside the groove is compressed and the internal pressure rises as it is closed, the lid closing work is not performed smoothly, which not only makes it difficult to automatically close the lid by mechanization. In order to prevent the lid body from being lifted up due to the retained compressed air, the lid body needs to be taped to the container body, and the lid closing work is troublesome.

In view of the problems of the conventional air-tight container made of foamed synthetic resin, the present invention, in the lid closing work, influences the outside air on the contents stored in the container, or the cold air or heat inside flows out. The purpose of the present invention is to provide an airtight container that does not impair the function of the airtight container main body such that it does not operate, facilitates the lid closing work, and eliminates the need for tape fixing after the lid is closed. .

[Means for solving the problem]

In order to configure the above object, the airtight container according to the present invention comprises a box-shaped container body having an opening on the upper surface, and a lid body for closing the upper surface opening of the container body. Airtight fitting structure in which a convex strip is provided on one of the joints between the container body and the lid and a concave strip for fitting with the convex strip is provided on the other part to shut off the inside and the outside of the container when the lid is closed to form an airtight state In addition, the gist is that a through hole is formed from the upper surface of the lid body toward the convex strip front surface or the concave strip bottom surface of the airtight fitting structure.

[Work]

In such an airtight container according to the present invention, when the lid body is externally fitted to the container body to close the lid body, one convex line of the airtight fitting structure provided at the joint portion between the two is the other concave line. As the air is fitted into the groove, the air in the groove is released through the through hole communicating with the upper surface of the lid, so that the inner pressure in the groove does not rise and the lid closing operation is smoothly performed. Then, after the concave and convex ridges are completely concave and convex fitted and the closing of the lid is completed, the lid body fits the convex and concave ridges of this airtight fitting structure so that the lid body opens the opening of the container body. At the same time as it is completely closed, in this closed state, the through hole formed between the inner surface of the fitting structure and the outer surface of the container does not communicate with the inside of the container body, and the airtight state inside the container is maintained well. To be done.

〔Example〕

The airtight container of the present invention will be described in more detail based on the illustrated embodiment.

FIG. 1 is a perspective view showing an embodiment of an airtight container according to the present invention, and FIG. 2 shows an airtight fitting structure for maintaining the airtight state. This airtight container is made of a foamed synthetic resin body such as foamed polystyrene, and is composed of a container body shown as 1 in the figure and a lid body shown as 2 in the figure.

The container body 1 has a box-like shape with an opening on the top surface, and the lid body 2 is formed in a shape capable of closing the top surface opening of the front container body 1, and the lid body 2 is fitted onto the container body 1 by external fitting. When closed, the inside is shut off from the outside to create an airtight state,
At the joint between the container body 1 and the lid 2 when the lid is closed,
An airtight fitting structure is formed. This airtight fitting structure
For example, a ridge 3 is provided under the entire circumference of the joint on the lid 2 side, and a side wall 4 serving as a joint with the lid 2 is provided on the container body 1 side.
On the upper end surface, a concave strip 5 that fits with the convex strip 3 of the lid 2 is provided over the entire circumference. In the example shown in the figure, the convex strip 3 is provided at the central portion in the width direction of the joint portion of the lower surface of the lid 2 that comes into contact with the upper end surface of the side wall 4 of the container body 1 when the lid is closed, and the width is widened at the tip portion. On the other hand, the protrusion 6 that is opened is formed, and the recessed line 5 of the container body 1 is provided on the upper end surface of the side wall 4 of the container body 1 in a shape corresponding to the projecting line 3 in an upwardly opened state. There is.

Reference numeral 7 in the drawing denotes a through hole having a circular cross section, for example, which is formed by penetrating from the upper surface of the lid body 2 toward the tip end surface of the ridge 3, and is provided at a plurality of positions around the lid body 2 at appropriate intervals. It is provided.

Further, 8 is provided at a plurality of locations on the upper end surface of the side wall 4 with appropriate intervals, with the bottom surface being positioned slightly above the bottom surface of the recess 5 from the inner surface side of the side wall 4 of the container body 1 toward the recess 5. It is a recess that opens upward.

In such an airtight container, a container body 1 from which the lid 2 has been removed is stored in a container body 1 that requires freezing or refrigeration, and is then stored in a vacuum chamber, a differential pressure chamber, a refrigerator, a refrigerating room, or the like for precooling. Then, the inside of the container is put into a frozen state or a refrigerated state, or something that needs refrigeration is stored in the container body 1 together with ice, a cold storage material, dry ice, etc., and then a closing means for a manual operation or an automation line. Is used to close the opening of the container body 1 with the lid 2 for storage and transportation.

Further, in this airtight container, during the lid closing work, the air staying in the container body 1 and the air taken into the container body 1 from the surroundings at the time of the work are protruded 3 as shown in FIG. Are discharged from the gap between the container body 1 and the lid body 2 until they are fitted into the recess 5. Next, when the convex strips 3 of the lid body 2 and the concave strips 5 of the container body 1 are fitted, the air in the container body 1 passes from the inside of the container body 1 through the recesses 8 to the lid strips 5. 2 is discharged to the outside of the container together with the air in the concave stripe 5 through a through hole 7 provided between the upper surface of the convex stripe 2 and the tip surface of the convex stripe 3. Then, after the convex strip 3 and the concave strip 5 are completely fitted together, that is, in the state shown in FIG. 2B, the tip end surface of the convex strip 3 contacts the bottom surface of the concave strip 5. The bottom end of the through hole 7 is closed, and the bottom surface of the recess 8 is located slightly above the bottom surface of the recess 5, so that the outer side of the recess 8 is closed by the fitted side surface of the projection 3. By doing so, the inside and outside of the container are completely shut off. Therefore, when the lid is closed, the airtight state inside the container is maintained well.

As described above, in the present airtight container, the through hole 7 that communicates with the upper surface of the lid 2 from the convex strip front surface or the concave bottom surface of the airtight fitting structure between the container body 1 and the lid 2 is provided. Thus, when the lid is closed, the air staying in the recessed line 5 is released to the outside of the container through the through hole 7, and the air is not compressed in the recessed line 5, facilitating the lid closing work and closing in the automation line. The lid work can be performed, and after the lid is closed, loosening of fitting due to floating of the lid body 2 due to compressed air in the recessed line 5 is reliably prevented, and the container body 1 and the lid body 2 are separated from each other. In addition to the frictional force between the convex ridges 3 and the concave ridges 5 which are airtight fitting structures, the protrusion 6 provided at the tip of the convex ridges 3 and the shape corresponding to the shape of the convex ridges 3 are formed. By being fitted airtightly by the locking force with the edge of the recessed groove 5 on the opening side,
The airtight state inside the container can be maintained well.

Further, FIG. 3 shows another embodiment of the airtight fitting structure in the airtight container according to the present invention, in which the protrusion 3 is provided on the inner side of the upper end surface of the side wall 4 of the container body 1. On the lower surface of the lid body 2, there is provided a recessed strip 5 that is open to the inside for accommodating the convex strip 3, and a through hole 7 is provided from the upper surface of the lid body 2 toward the joint surface.

〔The invention's effect〕

As described above, the cold insulation container according to the present invention is provided with a convex strip on one of the joints between the container body and the lid at the time of closing the lid, and a concave strip to be fitted with the convex strip on the other to close the lid. An airtight fitting structure that shuts off the inside and the outside of the container to be in an airtight state is formed, and a through hole is formed from the top surface of the lid toward the convex tip end surface or the concave bottom surface of the airtight fitting structure. Therefore, when the lid is closed, the air staying in the recess of the airtight fitting structure is discharged to the outside of the container through the through hole, and the air is prevented from being compressed in the recess, facilitating the lid work, In addition to enabling the lid closing work in the automation line, even after the lid is closed, the convex strips are properly prevented from floating up due to the compressed air in the concave strips between the container body and the lid strips. The airtight condition inside the container is maintained well by the airtight fitting with the concave groove. . Therefore, the contents inside the container are not affected by the outside air, and the cold air or heat inside does not flow out to the outside, and the original function of the airtight container can be sufficiently exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an airtight container according to the present invention, FIG. 2 is an enlarged sectional view of an essential part showing an airtight fitting structure of the airtight container, and FIG. 3 is another airtight fitting structure. 3 is an enlarged cross-sectional view showing the embodiment of FIG. 1: container body, 2: lid, 3: convex strip, 4: side wall, 5: concave strip, 6: projecting portion, 7: through hole, 8: recess.

Claims (1)

[Claims] 1. A box-shaped container main body having an opening on the top surface and a lid for closing the top opening of the container main body, wherein a convex strip is formed on one of the joints between the container main body and the lid when the lid is closed. Is provided on the other side to provide a concave line that fits with the convex line to form an airtight fitting structure that shuts off the inside and the outside of the container to be an airtight state, and the convex line of the airtight fitting structure is provided from the upper surface of the lid body. An airtight container made of a foamed synthetic resin, having a through hole formed toward the front end surface or the bottom surface of the concave groove.