JP2748112B2 - Closed container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container comprising a container body and a lid fitted to the container body.
The present invention relates to a closed container suitable for being applied to a garbage container, a pickle container, or the like, and particularly to a container having improved sealing performance by devising a portion including a fitting concave groove on a lid side.

[0002]

2. Description of the Related Art Various types of closed containers of this type have already been proposed, and are particularly useful for maintaining the freshness of food. However, as pointed out in, for example, Japanese Utility Model Publication No. Hei 7-32432, this type of closed container has a container main body and a lid to be fitted thereto formed of a synthetic resin material. Causes either to relatively shrink. When contracted in this manner, a gap is formed between the lid and the container body, and the conventional container has a problem that the sealing performance is reduced.

In particular, in order to improve the hermeticity, both the container body and the lid must be formed with high precision. If the hermeticity is improved, the lid is firmly adhered to the container body. As a result, not only the removal becomes difficult, but also the fitting property (making the fitting easy).
Also gets worse.

For this reason, for example, Japanese Utility Model Laid-Open No. 54-30602
"Synthetic resin sealed container" with improved sealing performance
Was proposed. This sealed container, as shown in FIG.
"A fitting projection (or fitting recess) is provided on the periphery of the opening of the container body, and a fitting recess (or fitting fitting) that can be fitted on the fitting projection (or fitting recess) of the container body on the periphery of the lid. When the fitting protrusion is fitted in the fitting recess in the synthetic resin hermetic container with the lid formed with the fitting protrusion), the fitting protrusion is forced at the deepest part of the fitting recess. The outer peripheral surface (or the inner peripheral surface) of the fitting convex portion is closely fitted to the outer peripheral surface (or the inner peripheral surface) of the fitting concave portion at another portion of the fitting concave portion. However, both the container main body and the lid must be molded with high precision in consideration of molding shrinkage, and the above-mentioned problem still remains. In addition, a spherical “flange” is integrally formed at the upper end of the container body, and this flange is forcibly fitted into the groove on the lid side. It is considered that the fitting operability is extremely poor because the groove also has high rigidity.

The same can be said for the "simple sealed container" proposed in Japanese Utility Model Laid-Open No. 4-124948. This is because, as shown in FIG. 17, this sealed container is also composed of “the container body 1 and the
A simple sealed container in which a lid 3 having a peripheral groove 4 having an inverted U-shaped cross section at the periphery thereof and elastically adhered to the lid is molded from a synthetic resin so as to be removably sealed. Groove 4
A flange portion 5 extending horizontally in an appropriate width to prevent bulging of the lower edge of the circumferential groove 4 is formed integrally and continuously with the entire outer circumference at the lower edge of the outer periphery of the outer peripheral surface. This is because it is a simple sealed container.

Accordingly, the present inventor has conducted various studies on how to improve the fitting operability while securing the hermeticity of this kind of hermetically sealed container, and as a result, completed the present invention. It was done.

[0007]

SUMMARY OF THE INVENTION The present invention has been made on the basis of the above circumstances, and an object of the present invention is to improve not only the sealing performance of the lid with respect to the container body but also the fitting operability. That is.

That is, an object of the invention according to claims 1 and 2 is to secure a sufficient airtightness by devising the shape and structure of the fitting portion between the container body and the lid. It is an object of the present invention to provide a hermetically sealed container which can easily perform the fitting operation and the detaching operation, and can also easily perform the manufacturing.

According to the third aspect of the present invention, not only the same effects as those of the first and second aspects can be exhibited, but also a material for forming a peripheral portion of the lid is used. It is an object of the present invention to provide a hermetically sealed container that can be further improved in sealing performance and fitting operability by devising it.

[0010]

Means for Solving the Problems In order to solve the above problems, first, means according to the first aspect of the invention will be described with reference numerals used in the following description of the embodiments. An upper end edge 11 of the container body 10 is fitted around the outer periphery of a lid body portion 21 which comprises a container body 10 for storing objects and a lid 20 for covering the upper end opening. A sealed container 100 in which a peripheral edge portion 22 having a concave groove 23 formed therein is integrated.
Was assumed to be inclined outwardly upwardly, and is inclined to match the center line L ₁ of the fitting groove 23 the inclination of the upper edge 11, the cover 2
0 is fitted to the container main body 10, the perpendicular L ₂ from the upper and outer ends of the container main body 10 is positioned outside the inner end face of the outer peripheral edge 22 a constituting the peripheral part 22, and the outer peripheral edge 22 a The lower portion is made thicker than the others, and a guide surface 24a for the upper end of the container body 10 is formed on the inner surface of the lower end thereof, and the inner peripheral edge 22b of the peripheral portion 22 is located below the upper end of the container main body 10 below. The closed container 100 "is characterized in that it reaches the end of the lid main body 22a and the outer surface of the lower end on the container main body 10 side is a guide surface 24b.

That is, the closed container 1 according to claim 1
Reference numeral 00 denotes the upper end edge 11 of the container main body 10 which is inclined upward and outward as shown in FIG. Body 2
As shown in FIGS. 1 and 2, the inside of the container body 10 is hermetically closed by the lid 20 by forcibly fitting the fitting groove 23 on the 0 side. Then, the tilting substantially similar to that of the top edge 11 of the center line L ₁ of the lid 20 side of the fitting groove 23, the peripheral portion 2 of the lid 20
2, the outer peripheral edge 22a is made thicker than the other, and the outer peripheral edge 22a is provided with a guide surface 24a on the lower end surface of the inner peripheral edge 22b on the container main body 10 side, and the guide surface 24b is provided on the lower end surface of the inner peripheral edge 22b on the container main body 10 side. Are formed respectively.

As described above, the center line L ₁ of the lower fitting concave groove 23 is inclined substantially in the same manner as the upper edge 11 of the container body 10, and the outer peripheral edge 22 a of the peripheral portion 22 is thicker than the other. As a result, as shown in FIGS. 3 and 4, the lower end of the outer peripheral edge 22 a is located inward (falls inward), and the peripheral edge on which the fitting groove 23 is formed is formed. The adhesion between the portion 22 and the upper edge 11 of the container body 10 is improved.

The reason is that the peripheral portion 22 of the lid 20 is
As shown in FIG. 5, the outer peripheral edge 22 a of the lid body 20 is annularly formed on the outer periphery of the lid main body 21 which is located at the center of the lid 20, and the outer peripheral edge 22 a is made thicker than the others. By forming the outer peripheral edge 22a, the synthetic resin material forming the peripheral edge portion 22 shrinks after molding, and the outer peripheral edge 22a becomes smaller in diameter so as to shrink the rubber band.
Is because it falls down further and exhibits a sufficient hermeticity. Of course, the fitting groove 23 on the lid 20 is inclined to match the inclination of the upper edge 11 on the container body 10 in the first place, so that the peripheral portion 22 on the lid 20 and the upper edge 11 of the container body 10 Has a firm adhesion.

Further, in this sealed container 100, when fitted to the lid 20 to the container body 10, the outer periphery of the perpendicular L ₂ from the upper outer end of the container body 10 constitute the peripheral portion 22 22a, it is located outside the inner end face, so that the peripheral portion 22 on the lid 20 side and the upper edge 1 of the container body 10
The adhesiveness with No. 1 is more reliable.

[0015] Incidentally, the cover 20 which is the center line L ₁ as described above had a fitting groove 23 which is inclined, in the case of forming a synthetic resin material, but the die-cutting is likely to be a problem, the center if the inclination angle of the line L ₁ in such a degree as shown in FIGS. 3 and 4, in which it can be performed reasonably stamped by the inner periphery 22b own flexibility constituting the peripheral portion 22 .

The lid 20 having such a fitting groove 23 is provided.
Is fitted to the upper edge 11 of the container body 10, the position of the opening of the fitting groove 23 is slightly shifted outward from the upper end of the upper edge 11. Upper edge 11 of outer peripheral edge 22a and inner peripheral edge 22b
As shown in FIGS. 3 and 4 and FIGS. 8 and 9, guide surfaces 24a and 24b, which are curved or inclined surfaces, are formed at the side ends.
And 24b guide the upper end of the upper edge 11 into the fitting groove 23. Therefore, the fitting operation of the lid 20 to the container body 10 can be easily performed. Of course,
If the peripheral portion 22 is made of a flexible synthetic resin material, the fitting operation can be performed more easily.

After the fitting as shown in FIG. 3, as described above, the peripheral portion 22 forming the lid 20 is positioned with respect to the perpendicular L ₂ from the outer upper end of the upper end edge 11. Since the outer peripheral edge 22a has its inner lower end located inward, the outer peripheral edge 22a may be formed and contracted, so that the upper peripheral edge 11 may firmly adhere to the fitting groove 23. It is. That is, the lid 20 is fitted to the container body 10 in a state where sufficient adhesion is secured.

When removing the lid 20 from the container main body 10, the same operation as described in the above description for removing the lid 20 from the mold is performed, that is, the upper edge 11 of the container main body 10 is molded. As in the case of performing the die-cutting operation from the upper end edge 11 in the same manner as described above, the operation can be easily performed.

Therefore, the sealed container 10 according to claim 1 is provided.
According to 0, the fitting operability is improved,
When the lid 20 is fitted to the container body 10, the hermeticity between the two is sufficiently ensured. In addition, the closed container 100 having such a function, that is, the container main body 10 and the lid 20 can be easily molded with a synthetic resin material.

[0020] In order to solve the above-mentioned problem, a second aspect is provided.
Means adopted by the invention according to the present invention also include “a circular container main body 10 having a screw portion 12 on the upper outer periphery,
And a circular lid 20 having a screw portion 25 screwed to the screw portion 12 to cover the upper end opening of the closed container 10.
0, the lid 20 is formed by integrating a separately formed peripheral edge 22 around the lid main body 21 serving as a central portion thereof, so that the lid 20 is directly above the upper edge 11 of the container main body 10. The closed container 10 characterized in that the outer peripheral edge 26 of the lid main body 21 is located within the peripheral edge 22 located.
0 ".

That is, the closed container 1 according to claim 2
00 is shown in FIGS. 10 to 15, and the container main body 10 and the lid 20 are made circular, and the lid 20 is screwed to the container main body 10.
The inside of the container body 10 is sealed. In this closed container 100, when the lid 20 is screwed to the container main body 10, the upper end edge 11 on the container main body 10 side
The outer peripheral edge 21a of the lid main body 21 constituting the lid 20 is located in the lid 20 located immediately above the upper end.

Further, the sealed container 100 according to claim 2 is provided.
In this example, the lid 20 is formed by integrally molding (in-molding) a peripheral portion 22 on the outer periphery of a lid main body 21 to be positioned at the center, for example, with a time lag. For this reason, the closed container 100 according to claim 2 can be manufactured as compared with the lid body 20 in which the peripheral portion 22 is integrated with the lid main body portion 21 as shown in FIG. In addition, the lid main body 21 separate from the peripheral portion 22 can be formed of a harder synthetic resin material.

In the hermetically sealed container 100 according to the second aspect, when the lid 20 is screwed to the container body 10 using the screw portions 12 and 25, the upper edge 1
The outer peripheral edge 21a of the lid main body 21 is located at the upper end of 1, so that the hermeticity is ensured. That is, when the lid 20 is screwed into the container main body 10, the outer peripheral edge 21a of the lid main body 21 constituting the lid 20 is
Since the peripheral portion 22 is formed of a soft synthetic resin material even if the peripheral portion 22 is formed of a soft synthetic resin material, the lid main body portion 21 is formed of a hard synthetic resin material. If so, the upper end edge 11 on the container main body 10 side and the outer peripheral edge 21a of the lid main body 21 are firmly sandwiched. Therefore, the hermeticity between the container body 10 and the lid 20 is sufficiently ensured.

The closed container 100 according to claim 2
In this case, when the lid 20 is screwed to the container body 10 using the screw portions 12 and 25, the ridge 26 of the lid 20 contacts the upper end of the upper end edge 11, and This also ensures the tightness between the two. That is, the lid 2
The ridge 26 on the 0 side plays a role of so-called packing, and since the ridge 26 is integral with the peripheral portion 22 of the lid 20, for example, when the lid 20 is washed. The ridges 26 do not flow away. In particular, if the peripheral portion 22 of the lid 20 is formed of a synthetic resin material as described in claim 3 described later, the ridge 26 itself has sufficient flexibility, and therefore, the upper end on the container body 10 side. Adhesion to the edge 11 is reliably ensured.

Then, in order to solve the above-mentioned problem,
The means adopted by the invention according to claim 3 is that, in the closed container 100 according to claim 1 or 2, “the entire peripheral portion 22 constituting the lid 20 is made of a 75-65 SEBS elastomer. % Polypropylene is integrally formed of a synthetic resin material having a mixing ratio of 25 to 35%. "

That is, the closed container 100 according to the present invention
Is made of a synthetic resin material whose main material is an SEBS-based elastomer in which polypropylene is mixed at the above ratio, whereby the peripheral portion 22 of the lid 20 is For example, the cover 20 is slightly softer than the cover body 21. If the peripheral portion 22 is soft, the fitting operation to the upper edge 10a of the container body 10 by the fitting concave groove 23 is, of course, performed.
The removal operation can be easily performed, and the sealing property of the lid body 20 to the container body 10 is also improved. This is because if the peripheral portion 22 is soft, the fitting groove 23
This is because the deformation of the peripheral portion 22 including the above becomes easy, and the resilience thereof is also improved.

Peripheral portion 22 including such fitting groove 23
In order to make the resin soft, a synthetic resin material for forming the peripheral portion 22 is made of SEBS elastomer.
It must be made of polypropylene containing only 5-65%. The reason is that the content of the elastomer is 6
If the content is less than 5%, the required flexibility cannot be imparted to the peripheral portion 22 of the lid 20, and if the content of the elastomer is more than 75%, the elastomer is fitted to the upper edge 10a of the container body 10. Rim 2 including fitting groove 23 to be formed
This is not only because the rigidity required by the cover 2 cannot be secured, but also the lid 20 is expensive.

As this type of elastomer, SEBS
It is necessary to employ a styrene-butadiene-based block copolymer hydrogenated one. The reason is that SEBS is used as an elastomer base polymer.
If a type is used, it means that a base polymer having no double bond is adopted, which not only has excellent weather resistance and heat resistance, but also has less "odor", for example, food This is because it is suitable for forming a closed container 100 for storage.

Further, the main material constituting the lid body 21 of the lid 20 is made of polypropylene. When one product / article is simultaneously molded with different materials, even if different materials are used, the materials are somewhat different from each other. This is because it is preferable to have an affinity of Therefore, on the premise that the lid body 20 of the present invention is made of polypropylene, the lid body portion 21 that is located inside the peripheral portion 22 is made of a main material of a synthetic resin material for forming the peripheral portion 22. 25-35
% Polypropylene.

[0030]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a closed container according to an embodiment of the present invention;
1 to 9, a closed container 100 according to claim 1 is shown, and FIGS.
Are shown, respectively. Therefore,
We will explain each invention in the order of these figures,
Since the invention of claim 3 is common to both, it will be described last.

FIG. 1 is a plan view of the closed container 100 according to the first aspect of the present invention, in which the upper half is a bottom view, and FIG. 2 is a sectional view of the left half of the closed container 100. FIG. 1 is a front view showing a closed container 100 including a container body 10 for storing objects and a lid 20 fitted therein.
It consists of:

The container main body 10 is integrally formed of a relatively hard and heat-resistant synthetic resin material such as polypropylene or the like. As shown in FIG.
It is inclined upward and outward. The fitting groove 23 on the side of the lid 20 is fitted into the upper end edge 11 from the upper end, whereby the lid 20 is integrated.

As shown in FIGS. 2 to 4, the lid 20 is formed integrally with the outer periphery of the lid main body 21 constituting the central portion by molding a peripheral edge 22 by, for example, a core pack molding method. It is. In the lid 20 of the present embodiment, the lid main body 21 is formed of a transparent or translucent synthetic resin material. The peripheral portion 22 is colored, and the colored peripheral portion 22 borders the peripheral edge of the lid main body 21, so that the design is excellent.

As shown in FIGS. 3 and 4, the outer peripheral portion 22 of the lid 20 is located outside and inside the upper edge 11 of the container body 10. 22a and an inner peripheral edge 22b. Between the outer peripheral edge 22a and the inner peripheral edge 22b, a fitting groove 23 into which the upper edge 11 is to be inserted is formed. Center line L ₁ of the fitting groove 23, as shown in FIG. 3, Yes so as to tilt the same angle of inclination with the center line of the upper edge 11, thereby, the fitting groove 23, the outer It is inclined upward.

The outer peripheral edge 22a and the inner peripheral edge 22b forming the peripheral edge portion 22 of the lid 20 are provided on the side surfaces of the upper edge 11 with the fitting concave grooves 23 when the upper edge 11 is fitted.
Guide surfaces 24a and 24b for guiding the vehicle are provided. In particular, as shown in FIG. 4, the outer peripheral edge 22 a is thicker than the other peripheral edge portions 22.

In the closed container 100 shown in FIGS.
By making the outside of the outer peripheral edge 22a have an arc-shaped cross section, the outer periphery 22a is made thicker.
7 and FIG. 7, the outer surface is made vertical and the inner surface forming the fitting groove 23 is directed downward and inward as shown in FIGS. By inclining, the thickness is increased particularly toward the lower part of the outer peripheral edge 22a.

Outer peripheral edge 2 made thicker as described above
2a, when it is molded with a synthetic resin material, when the synthetic resin material constituting the part is cooled and solidified, it shrinks more than the synthetic resin material constituting other parts. . This contraction is caused by the outer peripheral edge 22a.
Is also promoted by being annularly positioned on the outer periphery of the lid 20, and as described above, the outer peripheral edge 22 is
a, to exhibit even more inward collapse by shrinkage,
It also improves the adhesion to the upper edge 11 of the container main body 10 at the time of fitting.

In the closed container 100, the user removes the lid 20 from the container body 10 with his / her finger. Therefore, a finger hook 27 for facilitating the removal operation is provided. It is. When this kind of closed container 100 has a substantially square shape as shown in FIGS. 1 and 5, the fitting strength is the strongest at the corner, and therefore, this finger hook 27 FIG.
As shown in (1), it is formed integrally with the outer peripheral edge 22a located at any corner.

It should be noted that the invention according to claim 1 includes a substantially rectangular closed container 100 as shown in FIG. 1 or FIG. 6 and a substantially square closed container 100 as shown in FIG.
The present invention can also be applied to a cylindrical closed container 100 as shown in FIG. Also, the lid 20
When the peripheral part 22 is integrally formed around the lid main part 21 by a core bag molding method, the butting of the lid main part 21 and the peripheral part 22 is performed using a vertical surface as shown in FIGS. 8 may be implemented.
As shown in FIG. 9 and FIG. 9, the steps may be performed by steps formed on each end face of both. If it is made to abut by the step portion, the lid body portion 21 and the peripheral portion 22
Since the contact area between the two increases, the integration of the two can be performed more reliably.

FIG. 10 is a perspective view of two types of closed containers 100 according to the second aspect. The closed container 100 on the left side of the drawing is of a large depth type, and the right side is of a deep type. Things. The hermetically sealed container 100 has a cylindrical shape, and is sealed by screwing the lid 20 to the container body 10. Therefore, as shown in FIGS. 11 and 12, a screw portion 12 is formed on the outer periphery of the upper portion of the container main body 10 constituting the closed container 100.

The closed container 100 shown in FIG.
11 and 12, the outer peripheral edge 21a of the lid body 20 located at the center thereof, as shown in FIGS.
The peripheral portion 22 is integrated by, for example, an in-mold molding method. Of course, on the inner surface of the peripheral portion 22, a screw portion 25 screwed to the screw portion 12 of the container body 10 is provided.
However, they are integrally formed as shown in FIG.

In the closed container 100, when the lid 20 is screwed into the container main body 10, the outer peripheral edge 21a on the lid main body 21 side is formed in the peripheral portion 22 located immediately above the upper end edge 11. Is located. That is, the outer peripheral edge 21a of the lid main body 21 that can be formed of a hard synthetic resin material is
The upper end of the pair 1 sandwiches the peripheral portion 22 formed of a synthetic resin material having flexibility. Therefore, the hermeticity between the container body 10 and the lid 20 depends on the peripheral portion 22.
It is secured by its own elastic deformation.

When the lid 20 is screwed into the container main body 10, if a ridge 26 is formed on the inner surface of the lid main body 21 which is located immediately above the upper edge 11, the ridge 26 is formed. Since the ridge 26 is also formed of a synthetic resin material having the same flexibility as the peripheral portion 22, the elasticity of the ridge 26 itself ensures that the tightness between the container body 10 and the lid 20 is ensured. It is done. That is, in the closed container 100 of this embodiment, when the lid 20 is screwed into the container main body 10, the upper end 11
Since the protruding ridge 26 that comes into contact with the upper end is integrally formed on the lower surface of the peripheral portion 22 of the lid 20, the sealing performance of the lid 20 with respect to the container body 10 can be improved.

The closed container 1 shown in FIGS.
FIG. 00 shows an example in which the lid body 21 constituting the lid 20 is formed in a substantially flat plate shape. In order to make the rigidity of the lid body 21 sufficient, FIGS. 13 to 15 show a sealed container 100 in which a reinforcing annular portion 28 is formed on the lower surface side of the lid main body 21. The reinforcing annular portion 28 is a flange-like member integrally formed on the lower surface (inner surface) of the lid main body 21 so as to provide sufficient rigidity when the lid 20 is enlarged.

Further, in the closed container 100 shown in FIG. 13, since the peripheral portion 22 constituting the peripheral portion of the lid 20 itself is soft, as shown in FIG. Even when the inner side surface is flat, the upper end edge 11 of the container body 10 that comes into contact with the inner side from the inside.
The airtightness between the upper end can be sufficiently ensured. Of course, as shown in FIG.
If the ridge 26 is integrally formed on the inner surface corresponding to the upper end of the upper edge 11, the sealing between the container body 10 and the lid 20 can be ensured even by the elastic deformation of the ridge 26 itself. You can do it.

In order to form the lid 20 by the core-back molding method, the lid main body 21 is (primary) injection-molded with transparent or translucent polypropylene, and then the lid main body 21 is formed. A space (cavity for the peripheral portion 22) is formed by retracting a part of the mold (core back), or a flow path of the resin to this space is formed, and a styrene-butadiene-based block is formed in this space. Hydrogenated copolymer (SEBS) elastomer
The injection molding (secondary) is performed by injecting a synthetic resin material mainly composed of an elastomer, which is made of polypropylene mixed with only 5 to 65%. During this time, the mold is not opened, and the secondary injection is performed during the primary cooling time of the primary injection, so that the molding time is shortened and the adhesion of the peripheral portion 22 to the lid body 21 is ensured. Is what it is.

As the synthetic resin material of the peripheral portion 22 in the present embodiment, an elastomer (SEBS-based) having a hydrogenated SBS block copolymer as a base polymer is mixed with polypropylene so as to have a weight ratio of 27.5%. Is adopted. There are three types of polypropylene, homo, random, and block. In this embodiment, the random type is adopted. Moreover, since the base polymer of the elastomer is of the SEBS type, this base polymer does not have a double bond, so it is not only excellent in weather resistance and heat resistance, but also
It has less "odor" and is suitable, for example, as a closed container 100 for storing food.

Further, the hardness of the peripheral portion 22 formed of the synthetic resin material mixed with the elastomer polypropylene as described above is measured by a durometer according to JIS-JIS.
When measured under the standard of K-7215, A93
The hardness of the lid body 21 was measured by a Rockwell hardness meter according to JIS-K-7202, and the hardness was R57. In addition, this peripheral part 22
Was formed from low-density polyethylene 100% in the same manner as in the prior art, and the hardness was measured with a durometer under the standard of JIS-K-7215, and the hardness was A98.

That is, the peripheral portion 2 of the lid 20 according to the present invention
By providing a hardness difference between the hardness of the lid body portion 2 and the hardness of the lid body portion 21, when sealing, the lid body portion 2 having a high hardness is used.
1 has a meaning of improving the operability that it can be pressed strongly, and lowering the hardness of the peripheral edge portion 22 than the lid main body portion 21 requires the fitting / removing operation with respect to the upper edge 11 of the container main body 10 to be a conventional product. There is a meaning that it is easier to perform and that the sealing property is improved.

By the way, when the lid 20 is formed in a substantially rectangular shape as shown in FIG. 1, most of the lid 20 is the lid main body 21 formed of transparent or translucent polypropylene. Not only can the inside of the container main body 10 be visually recognized through the lid main body portion 21, but also because the colored peripheral portion 22 exists around the lid main body portion 21, the inside thereof cannot be seen by the peripheral edge portion 22. That is, the lid 20 is not only excellent in design in which the colored peripheral portion 22 is present around the lid body 21, but also if the lid 20 and the container body 10 Even if an object is sandwiched in between, the peripheral portion 22 is invisible from the outside, which improves the overall appearance during use.

Of course, as shown in FIGS. 2 to 4, a fitting concave groove 2 having a substantially inverted U-shaped cross section is formed in the peripheral portion 22 of the lid 20.
3 is formed, and the container body 1 is
The upper edge 11 on the zero side is to be fitted. Since the periphery of the fitting concave groove 23 is the peripheral portion 22 formed of the synthetic resin material having the hardness described above, the fitting property of the lid 20 to the container body 10 is good and the sealing property is good. This is as described above.

[0052]

As described in detail above, first, in the invention according to the first aspect, "the upper edge 11 of the container body 10 is inclined outward and upward, and the center line L ₁
When the lid 20 is fitted to the container main body 10 so as to match the inclination of the upper end edge 11, a perpendicular line L ₂ from the upper and outer ends of the container main body 10 forms the outer peripheral edge 22.
a to be positioned outside the inner end face of
a is formed thicker than the other, and a guide surface 24a for the upper end of the container body 10 is formed on the inner surface of the lower end thereof, and an inner peripheral edge 22b constituting the peripheral portion 22 is formed.
From the upper end of the container body 10 to the end of the lid body portion 22a located below the container body 10,
The outer surface of the lower end of the container body 10 is a guide surface 24b. "
In addition, in the invention according to claim 2, the "lid 20
Is formed by integrating a separately formed peripheral portion 22 around a lid main body portion 21 serving as a central portion thereof,
Peripheral portion 22 located directly above upper edge 11 of container body 10
The outer peripheral edge 26 of the lid main body 21 is positioned inside the main body 21 ", which has a structural feature. As a result, the shape and structure of the fitting portion between the container main body 10 and the lid 20 are devised. As a result, it is possible to provide a sealed container 100 that can ensure sufficient sealing performance, can easily perform the fitting operation and the detaching operation, and can easily perform manufacturing. is there.

Further, in the invention according to claim 3,
Regarding the closed container 100 according to claim 1 or 2,
The "peripheral portion 22 constituting the lid 20 is integrally formed of a synthetic resin material having a mixing ratio of 75-65% SEBS elastomer and 25-35% polypropylene". There is the above feature, and thereby, it is possible to provide a closed container which can not only exhibit the same effects as those of the first and second aspects, but can further improve the sealing property and the fitting operability. It comes out.

Therefore, the closed container 100 according to the present invention
As in the case of a lunch container, a garbage container, a pickle container, or the like, it is necessary to frequently open and close the container and to have a hermetic seal when closed, that is, to prevent the juice in the container body 10 from leaking outside. It can be very suitable to apply to things.

[Brief description of the drawings]

FIG. 1 is a plan view in which an upper half of a closed container according to claim 1 is a bottom view.

FIG. 2 is a front view in which a left half of the closed container is a cross-sectional view.

FIG. 3 is a partially enlarged sectional view taken along line 1-1 of FIG. 1;

FIG. 4 is a partially enlarged sectional view taken along line 2-2 of FIG. 1;

FIG. 5 is a plan view of the closed container having a substantially square shape, with the upper half being a bottom view.

FIG. 6 is a plan view showing another example of the closed container.

FIG. 7 is a front view in which a left half of the lid of the closed container shown in FIG. 6 is a cross-sectional view.

FIG. 8 is a partially enlarged cross-sectional view of the lid, and FIG.
The 3-3 line portion and (b) show the 4-4 line portion.

FIG. 9 is a partially enlarged sectional view of the lid taken along line 5-5 in FIG. 6;

FIG. 10 is a perspective view showing two types of closed containers according to claim 2;

FIG. 11 is a partial cross-sectional view of the closed container.

FIG. 12 is an enlarged partial sectional view of a main part of FIG. 11;

FIG. 13 is a front view showing another embodiment of the closed container according to claim 2, wherein a left half is a cross-sectional view.

FIG. 14 is a plan view of the same.

15 is an enlarged partial cross-sectional view of a main part of FIG. 13;
Shows a case where the inner surface of the peripheral portion is flat, and (b) shows a case where a ridge is formed on the inner surface of the peripheral portion.

FIG. 16 is a partially enlarged sectional view showing a conventional closed container.

FIG. 17 is a partially cutaway perspective view showing another conventional closed container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Closed container 10 Container main body 11 Upper end edge 12 Screw part 20 Lid body 21 Lid main body part 21a Outer peripheral edge 22 Peripheral part 22a Outer peripheral part 22b Inner peripheral part 23 Fitting groove 24a / 24b Guide surface 25 Screw part 26 Ridge

Claims (3)

(57) [Claims] An upper end of the container main body is fitted to an outer periphery of a lid main body constituting the lid body. A sealed container integrating a peripheral edge portion having a fitting concave groove, wherein an upper end edge of the container body is inclined outward and upward,
When the center line of the fitting concave groove is inclined according to the inclination of the upper end edge, and the lid is fitted to the container main body, a perpendicular from the upper and outer ends of the container main body constitutes the peripheral edge portion. The outer peripheral edge is located outside the inner end surface, the lower part of the outer peripheral edge is thicker than the other, and a guide surface for the upper end of the container body is formed on the lower end inner surface, and The inner peripheral edge of the peripheral portion extends from the upper end of the container main body to the end of the lid main body portion located below the container main body, and the lower end outer surface on the container main body side is a guide surface. A sealed container characterized by: 2. A hermetic seal comprising a circular container body having a screw portion on the outer periphery of an upper portion, and a circular lid having a screw portion screwed to the screw portion so as to cover an upper end opening of the container body. A container, wherein the lid is formed by integrating a separately formed peripheral portion around a lid main body serving as a central portion thereof, and the lid is located immediately above an upper end edge of the container main body. An airtight container, wherein an outer peripheral edge of the lid main body is located in a peripheral edge portion. 3. A method according to claim 1, wherein the entire periphery of the lid is integrally formed of a synthetic resin material having a mixing ratio of 75 to 65% of SEBS elastomer and 25 to 35% of polypropylene. The sealed container according to claim 1, wherein the container is a closed container.