WO2002087383A1

WO2002087383A1 - Airtight container

Info

Publication number: WO2002087383A1
Application number: PCT/JP2002/003773
Authority: WO
Inventors: Yukitomo Yuhara
Original assignee: Yoshida Industry Co., Ltd.
Priority date: 2001-04-18
Filing date: 2002-04-16
Publication date: 2002-11-07
Also published as: EP1380226A4; US20040124200A1; JP2002306234A; JP4781554B2; EP1380226A1; EP1380226B1

Abstract

An air tight container, comprising a sealing mechanism (17, 17a) wherein upper seal surfaces (11, 11a) and lower seal surfaces (12, 12a) displaced in the vertical direction of a container body are formed on the inward peripheral wall surfaces (9, 9a) and the outward peripheral wall surfaces (10, 10a) of an annular seal groove formed integrally with the container body (3), upper seal parts (15, 15a) and lower seal parts (16, 16a) are formed on the upper parts (13, 13a) and the lower parts (14, 14a) of an annular seal projection formed integrally with a cover body (6), the upper parts of the annular seal projection are formed in high rigid parts to allow the upper seal parts to come into slidable contact with the upper seal surfaces, and the lower parts of the annular seal projection are flexibly and deformably formed in low rigid parts to allow the lower seal parts to pressingly come into elastic contact with the lower seal surfaces.

Description

Specification

Airtight container

Technical field

INDUSTRIAL APPLICABILITY The present invention can be integrally formed with a synthetic resin container main body and a lid, is inexpensive and has good productivity, and can exhibit high hermetic sealing performance while ensuring smooth opening and closing operability of the lid. The present invention relates to an airtight container provided with a sealing mechanism.

Background art

Normally, among various containers such as cosmetic containers molded from synthetic resin materials, there is a case where remarkable airtightness is required due to the volatile nature of the stored items. As a structure for ensuring airtightness in this type of container, for example, an annular groove is integrally formed on one of the container body and the lid, and an annular protrusion that is fitted into the annular groove is integrally formed on the other. However, it is known that a sealing function is exerted between the container body and the lid by keeping the inner surface of the groove and the surface of the projection close to each other.

(Refer to Japanese Utility Model Application Laid-Open No. Sho 61-64813, Japanese Utility Model Application Laid-Open No. 63-15912, and Japanese Utility Model Application No. Hei 4-331509).

By the way, in these prior arts described above, the inner surface of the groove and the surface of the projection which are integrally formed with the container body and the lid body formed of a synthetic resin material and which are in close contact with each other to form an airtight seal are described. Since it is molded with synthetic resin material, it is difficult to make tight contact between the inner surface of the groove and the surface of the projection without any gap, in combination with the rigidity of the synthetic resin material itself. Anyway, it was unsatisfactory when high hermetic performance was required.

In order to improve the airtight sealing performance, it is necessary to adjust the dimensional setting between the inner surface of the groove and the surface of the projection to increase the tightness.However, in this case, the lid does not close or opens and closes. On the other hand, there was a problem that if the tightness was set low to make the lid easy to operate, sufficient sealing performance could not be secured.

To solve such a problem, it is conceivable to incorporate a sealing material such as rubber, which is well known as a sealing component, as a separate component. In this way, the operability of the lid body is not impaired, It is possible to ensure a considerably high hermeticity. Shina However, in this case, it is necessary to prepare a different material for the raw material, separate from the container body and lid, which are molded of synthetic resin material, and to perform the assembling work, which increases costs and increases productivity. If it declines, another challenge will arise.

Disclosure of the invention

The present invention has been made in view of, for example, such a problem, and can be integrally formed with a synthetic resin container main body and a lid, so that it is inexpensive and has good productivity, and can smoothly open and close the lid. An object of the present invention is to provide an airtight container provided with a sealing mechanism that can exhibit high airtight sealing performance while ensuring operability.

An airtight container according to one embodiment of the present invention includes an annular seal groove integrally formed on one of a synthetic resin container body and a synthetic resin lid for opening and closing the container body, and an annular seal protrusion integrally formed on the other. A hermetic container that hermetically seals the inside of the container body, wherein any one of an inward peripheral wall surface and an outward peripheral wall surface of the annular seal groove facing each other at an interval from each other. An upper seal surface is formed on one side, and a lower seal surface is formed on the other side by shifting the position in the height direction of the container main body. The annular seal projections are formed on upper and lower portions along the height direction of the container main body. An upper seal portion and a lower seal portion are formed corresponding to the upper seal surface and the lower seal surface, respectively, and the annular seal is formed so that the upper seal portion slides on the upper seal surface. In order to form the upper portion of the projection with high rigidity and to elastically press the lower seal portion against the lower sealing surface, a lower end of the annular seal projection is formed with low rigidity so that it can be deformed flexibly. It is provided.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a partially cutaway perspective view of a cosmetic container showing one embodiment of an airtight container according to the present invention, FIG. 2 is a side sectional view of the cosmetic container of FIG. 1, and FIG. FIG. 4 is an enlarged side sectional view of a main part of the cosmetic container of FIG. 1, and FIG. 5 is an enlarged side sectional view of a main part showing a modification of the airtight container according to the present invention. FIG. 6 is an enlarged side sectional view of a main part showing a modification of the airtight container according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

= = Disclosure Overview = =

An airtight container according to one embodiment of the present invention includes a container body made of a synthetic resin, An airtight container in which an annular seal protrusion integrally formed with the other is inserted into an annular seal groove integrally formed with one of the synthetic resin lids to hermetically seal the inside of the container body. Wherein an upper sealing surface is formed on one of an inward peripheral wall surface and an outward peripheral wall surface facing each other at an interval from each other, and the other is positioned in a height direction of the container body. To form a lower seal surface. The upper seal portion and the lower seal surface correspond to the upper seal surface and the lower seal surface on the upper and lower portions of the annular seal protrusion along the height direction of the container body, respectively. In order to form a lower seal portion and to make the upper seal portion slidably contact the upper seal surface, an upper portion of the annular seal protrusion is formed with high rigidity, and the lower seal portion is formed by the lower seal portion. In order to elastically press-contact, but with a sealing mechanism at the bottom of the annular seal projection formed on the low rigidity to the flexible deformation available-.

In such an airtight container, for example, it can be formed integrally with a synthetic resin container main body or a lid, so that it is inexpensive and has good productivity, and the upper seal portion has high rigidity on the upper seal surface. The lower seal part is elastically pressed against the lower seal surface, and the upper and lower seal parts ensure a high airtight seal while ensuring smooth opening and closing operation of the lid. Performance can be ensured.

Preferably, a gap is provided between any one of the inward peripheral wall surface and the outward peripheral wall surface having the lower seal surface and the upper portion of the annular seal protrusion to allow deformation of the upper portion of the annular seal protrusion. Form.

As a result, for example, the bulging deformation of the upper part of the annular seal protrusion can be allowed by the gap, whereby the pressure contact between the lower seal portion and the lower seal surface can be strengthened, and extremely high hermetic sealing performance is secured. be able to.

Further preferably, the airtight container includes a plurality of the seal mechanisms.

By providing a plurality of sealing mechanisms, for example, sealing can be performed in multiple stages, and further excellent airtightness can be secured.

= = Example = =

Hereinafter, an embodiment of an airtight container according to the present invention will be described in detail with reference to the accompanying drawings. Figures 1 to 4 show volatile cosmetics C as an example of an airtight container. A portable cosmetic container 1 is shown. As shown in the figure, the cosmetic container 1 has a container body 3 made of a synthetic resin in which a storage section 2 for accommodating a volatile cosmetic C is formed, and a hinge 4 connected to one end of the container body 3 via a hinge 4. A lid made of a synthetic resin that is movably connected to open and close the container body 3 and is detachably engaged with the other end of the container body 3 via a hook means 5 to maintain the container body 3 in a closed state. It is mainly composed of body 6.

Basically, the cosmetic container 1 of the present embodiment has an annular seal groove 7, 7a integrally formed in one of the container body 3 and the lid 6, and the container body 3 and the lid. The annular seal projections 8 and 8a are integrally formed on one of the other sides of 6, and the storage section 2 is hermetically sealed by inserting the annular seal projections 8 and 8a into the annular seal grooves 7 and 7a. In particular, the upper seal is provided on one of the inward peripheral wall surfaces 9 and 9a and the outward peripheral wall surface 10 and 10a that face each other at an interval from each other, in particular, the annular seal grooves 7 and 7a. Surfaces 11 and 11a are formed, and on the other side, lower sealing surfaces 12 and 12a are formed by shifting the position in the height direction of the container body 3, and the container body of the annular seal projections 8 and 8a is formed. The upper seal surface 11, 11 a and the lower seal surface 12, 12 a are placed on the upper 13, 13 a and lower 14, 14 a along the height direction of 3, respectively. Upper seal portions 15 and 15a and lower seal portions 16 and 16a are formed corresponding to the above, and the upper seal portions 15 and 15a are slid on the upper seal surfaces 11 and 11a. Therefore, the upper portions 13 and 13a of the annular seal protrusions 8 and 8a are formed with high rigidity, and the lower seal portions 16 and 16a are formed on the lower seal surfaces 12 and 12a. In order to make elastic pressure contact, the lower portions 14, 14a of the annular seal projections 8, 8a are provided with sealing mechanisms 17, 17a, which are formed to be flexible and have low rigidity. Also, one of the inward peripheral wall surfaces 9 and 9a having the lower seal surfaces 12 and 12a and the outward peripheral wall surfaces 10 and 10a and the upper part 13 of the annular seal protrusions 8 and 8a are provided. Gap 18 and 18a are formed between 13a and 13a to allow deformation of upper portions 13 and 13a of annular seal projections 8 and 8a.

Explaining with reference to the drawings, in the container body 3, annular sealing grooves 7, 7a are formed on a peripheral side wall 19 surrounding the storage portion 2 along the circumferential direction. In the present embodiment, the annular seal grooves 7, 7a are located radially inward and outward of the container body 3, and two large-diameter seal grooves and small-diameter seal grooves are arranged in parallel. These annular seal grooves 7, 7a It has two peripheral wall surfaces formed by depressing the peripheral side wall 19 at a considerable depth in the height direction of the container body 3, and these two peripheral wall surfaces are located between each other in the radial direction of the container body 3. They are placed facing each other across a gap. Of these peripheral wall surfaces, the peripheral wall surface located radially outward of the container body 3 becomes the inward peripheral wall surfaces 9 and 9a facing the storage unit 2 side, and the peripheral wall surface located on the storage unit 2 side is the container body (3) Outward peripheral wall surfaces 10 and 10a facing outward.

On the other hand, the lid 6 has an annular sealing projection 8, 8 a which is inserted into the annular sealing groove 7, 7 a when the container body 3 is closed by the lid 6. Thus, they are integrally formed so as to surround the storage section 2. In the present embodiment, the annular seal projections 8 and 8a are positioned radially inward and outward of the lid body 6 corresponding to the two annular seal grooves 7 and 7a, respectively. There are two things in a row. These annular seal projections 8 and 8a have two peripheral surfaces formed by being suspended at a considerable height on the container body 3 side, and are inserted into the annular seal grooves 7 and 7a. Of these two peripheral surfaces, the outer peripheral surface facing the outside of the container body 3 faces the inward peripheral wall surfaces 9 and 9a, and the inner peripheral surface facing the storage section 2 side faces the outward peripheral wall surface 1 and 9a. It faces 0 and 10a.

As shown in FIG. 4, when the annular seal projections 8 and 8a are inserted into the annular seal grooves 7 and 7a, the upper portions 13 and 13a and the lower portion along the height direction of the container body 3 are formed. 14 and 14a are separately brought into contact with the inward peripheral wall surfaces 9 and 9a and the outward peripheral wall surfaces 10 and 10a of the annular seal grooves 7 and 7a, respectively, and the sealing mechanism 17 and 17 are provided. a.

The relationship between the large-diameter annular seal groove 7 and the annular seal projection 8 will be described in detail as an example.The upper inner peripheral surface of the annular seal projection 8 is brought into contact with the outward peripheral wall surface 10 of the annular seal groove 7 to seal the upper part. The upper part of the outer peripheral wall corresponding to the upper seal part 15 is the upper seal surface 11. In addition, the lower outer peripheral surface of the annular seal protrusion 8 is in contact with the inward peripheral wall surface 9 of the annular seal groove 7 to form the lower seal portion 16, and the lower portion of the inward peripheral wall surface corresponding to the lower seal portion 16 is downward. It becomes the sealing surface 12. The contact areas where the seal portions 15 and 16 and the seal surfaces 11 and 12 may contact each other may be partially overlapped, but are set at least shifted in the height direction of the container body 3. It is.

In particular, the lower portion 14 of the annular seal projection 8 on which the lower seal portion 16 is formed is elastically pressed to the lower seal portion 16 with the lower seal surface 12 so that the lower seal portion 16 can be flexibly deformed. It is formed rigid. In the illustrated example, by setting the thickness of the lower part 14 of the annular seal projection 8 to be thin, the lower part 14 is softened, so that the lower seal part 16 becomes familiar with the lower seal surface 12. And it comes in contact with a considerable amount of resilience to make it airtight.

The upper part 13 of the annular seal projection 8 where the upper seal part 15 is located is formed with higher rigidity than the lower part 14 so that the upper seal part 15 slides on the upper seal surface 11. . In the illustrated example, the thickness of the upper part 13 of the annular seal projection 8 is set to be thicker to make the upper part 13 harder, so that when the annular seal projection 8 is removed into the annular seal groove 7, The upper seal portion 15 moves while sliding on the upper seal surface 11, and after the insertion is completed, the upper seal portion 15 is brought into contact with a considerably strong press contact force to seal hermetically.

Further, between the inward peripheral wall surface 9 having the lower seal surface 12 and the upper portion 13 of the annular seal protrusion 8 on the side opposite to the side where the upper seal portion 15 and the upper seal surface 11 contact. A gap 18 is formed to allow deformation of the upper part 13 of the annular seal projection 8. In the illustrated example, the gap 18 is formed by retracting the inward peripheral wall surface 9 radially outward of the container body 3 above the lower sealing surface 12, and the gap 18 forms the upper sealing portion. Even if the annular seal projection 8 is deformed so that the annular seal projection 8 swells when the annular seal projection 8 is strongly pressed against the upper seal surface 11, the deformation is absorbed without hindering the deformation.

The seal mechanism 17a composed of a small-diameter annular seal groove 7a and an annular seal protrusion 8a has a large seal mechanism except that the positional relationship between the seal portion and the seal surface is opposite to the radial direction of the container body 3. It has the same configuration as the seal mechanism 17 including the annular seal groove 7 having a diameter and the annular seal protrusion 8. That is, an upper seal portion 15a is formed on the outer peripheral surface of the upper portion of the annular seal protrusion 8a, an upper seal surface 11a is formed on the upper portion of the inward peripheral wall surface 9a, and a lower portion of the annular seal protrusion 8a is formed. A lower seal portion 16a is formed on the inner peripheral surface, and a lower seal surface 12a is formed below the outward peripheral wall surface 10a. Lower the outer peripheral wall 10a between the outward peripheral wall 10a and the upper part 13a of the annular seal projection 8a. By retreating radially inward of the container body 3 above the sealing surface 12a, a gap 18a is formed that allows deformation of the upper portion 13a of the annular seal protrusion 8a.

Also, the upper opening edge and gap 18 and 18a of these annular seal grooves 7 and 7a and the lower edge portion of the annular seal projections 8 and 8a and the lower edge and the peripheral edge of the thickness changing portion of the annular seal projections 8 and 8a A tapered surface 20 is formed to guide the pull-out operation of the annular seal projections 8, 8a into the grooves 7, 7a.

In such a cosmetic container 1, when the container body 3 is closed with the lid 6, first, the lower portions 14, 14a of the annular seal protrusions 8, 8a are smoothly inserted into the annular seal grooves 7, 7a. Then, the upper portions 13, 13a of the annular seal projections 8, 8a are inserted into the annular seal grooves 7, 7a. In the process in which the upper portions 13 and 13a of the annular seal protrusions 8 and 8a enter the annular seal grooves 7 and 7a, the upper seal surfaces 11 and 13 are formed at the upper portions of the annular seal grooves 7 and 7a. 11a and the upper seal portions 15 and 15a start slidingly slidably with each other, and the lower seal surfaces 12 and 12a and the lower seal at the lower portions of the annular seal grooves 7 and 7a. Parts 16 and 16a come into contact with each other.

Then, when the lid 6 is strongly closed, the lower seal portions 16 and 16a are inserted deeper into the lower seal surfaces 12 and 12a while being flexibly deformed while being adapted to the lower seal surfaces 12 and 12a. 5, 15a is inserted deeper while being strongly rubbed against the upper sealing surfaces 11a, 11a. When the lid 6 is completely closed and the container body 3 is closed by the hook means 5, the upper seal portions 15 and 15a are strongly slid on the upper seal surfaces 11 and 11a with their high rigidity. At the same time, the lower seal portions 16 and 16a are elastically pressed against the lower seal surfaces 12 and 12a, and the upper and lower seal portions exhibit high airtightness. be able to.

In particular, the upper seal portions 8 and 8a are swelled and deformed by strong sliding contact between the upper seal portions 15 and 15a and the upper seal surfaces 11 and 11a. Since the bulging deformation is allowed by the gaps 18 and 18a, the lower seal portions 16 and 16a of the lower seal portions 14 and 14a of the annular seal projections 8 and 8a have the lower seal surfaces 12 and 14. As a result, the lower seal portion 16, 16a and the lower seal surface 12, 12a are pressed against each other more strongly. Both the upper part 13 and 13a and the lower part 14 and 14a of the annular seal projections 8 and 8a can exhibit extremely high hermetic sealing performance.

In addition, since two large-diameter and small-diameter seal mechanisms 17 and 17a are installed side by side, it is possible to perform multi-stage sealing, and furthermore, it is possible to ensure excellent airtightness.

Furthermore, in the present embodiment, the positional relationship between the seal portions of the two large-diameter and small-diameter seal mechanisms 17 and 17a and the seal surface is configured to be opposite in the radial direction of the container body 3, and the two The annular wall portion 21 sandwiched between the annular seal grooves 7, 7a is sandwiched between the upper seal portions 15, 15a of the two annular seal projections 8, 8a. Then, coupled with the fact that the annular seal projections 8 and 8a are formed close to each other, the relationship between the seal portions and the seal surfaces of the two seal mechanisms 17 and 17a is the same as in the case where the relationship is the same. The sliding pressure of the upper seal portions 15 and 15a acting on the upper seal surfaces 11 and 11a by applying a reaction force to the lid-side base ends 22 and 22a of the annular seal protrusions 8 and 8a is doubled. Therefore, the hermetic sealing performance can be further improved.

On the other hand, when the container body 3 is opened, when the hook means 5 is removed, the upper seal portions 15 and 15a and the upper seal surfaces 11 and 11a, which are in a strong sliding contact state, and the elastic pressure contact shape In any of the lower sealing portions 16 and 16a and the lower sealing surfaces 12 and 12a, the contact state between them is loosened. The annular seal projections 8, 8a can be smoothly pulled out from the annular seal grooves 7, 7a, making it light! /, Operation I "can open lid 6 raw.

As described above, the sealing mechanisms 17 and 17a provided in the cosmetic container 1 of the present embodiment can be formed integrally with the container body 3 and the lid 6 made of a synthetic resin, and are inexpensive and have good productivity. At the same time, high hermetic sealing performance can be exhibited while ensuring smooth opening and closing operability of the lid 6.

5 and 6 show a modification of the above embodiment. Each of the examples is provided with one seal mechanism 17, and in the seal mechanism 17 of FIG. 5, the small-diameter annular seal projection 8a of the above embodiment is omitted. On the other hand, in the seal mechanism 17 of FIG. 6, the upper seal surface 11 of the outward peripheral wall 10 of the seal mechanism 17 of FIG. 5 is on the opposite inward peripheral wall 9 and below the inward peripheral wall 9. Outer peripheral wall surface 1 opposite sealing surface 1 2 In this connection, the annular wall portion 21 is formed low enough to secure the lower sealing surface 12. Even in these modified examples, substantially the same operation and effect as the above embodiment can be obtained.

In the above embodiment, in setting the rigidity required for the upper part 13, 13 a and the lower part 14, 14 a of the annular sinuous projections 8, 8 a, their thicknesses, Eventually, the side sectional area was changed. In addition to this, the upper part 13, 13 a and the lower part 14, 14 a were formed from synthetic resin materials having different rigidities. The rigidity of the upper part 13, 13a and the lower part 14, 14a can be increased by various well-known methods, such as forming a fine groove that gives considerable flexibility to the lower part 14, 14a. Of course, it can be set.

In the illustrated example, the case where the inward peripheral wall surfaces 9 and 9a and the outward peripheral wall surfaces 10 and 10a are formed almost vertically along the height direction of the container body 3 is shown. If necessary, narrow the annular seal grooves 7, 7a in the depth direction so that the distance between the inward peripheral wall 9, 9a and the outward peripheral wall 10, 10a is closer to the lower part than to the upper part. As described above, it may be formed to be inclined to some extent.

In the above embodiment, in order to secure the gaps 18 and 18a, the inward peripheral wall surfaces 9 and 9a and the outward peripheral wall surfaces 10 and 10a are retracted in the radial direction of the container body 3. However, if the thickness of the upper portions 13 and 13a of the annular seal projections 8 and 8a can be sufficiently secured, the inwardly facing peripheral wall surfaces 9 and 9a are not retracted without being retreated. The gaps 18 and 18a may be formed by reducing the thickness. Furthermore, in the above embodiment, the case where the annular seal grooves 7 and 7a are integrally formed in the container body 3 and the annular seal protrusions 8 and 8a are integrally formed in the lid 6 has been described as an example. Alternatively, the annular seal grooves 7, 7 a may be integrally formed in the lid 6, and the annular seal protrusions 8, 8 a may be formed in the container body 3.

Furthermore, in the above embodiment, the lid 6 attached to the container body 3 via the hinge 4 has been described as an example, but the lid 6 may be completely separated from the container body 3. Of course.

Industrial applicability

As described above, in the airtight container according to one embodiment of the present invention, for example, It is inexpensive and has good productivity because it can be integrally formed with the synthetic resin container body and lid, and the upper seal has high rigidity and is in strong sliding contact with the upper seal surface. With the seal portion elastically pressed against the lower seal surface, these two upper and lower seal portions can ensure high airtight sealability while ensuring smooth opening and closing operability of the lid.

Also, for example, the bulging deformation of the upper part of the annular seal protrusion can be allowed by the gap, whereby the pressure contact between the lower seal portion and the lower seal surface can be strengthened, and extremely high airtight sealing performance can be ensured. Can be.

Further, by providing a plurality of sealing mechanisms, for example, sealing can be performed in multiple stages, and further excellent airtightness can be secured.

Claims

The scope of the claims

1. Insert the annular seal projection integrally formed on the other into the annular seal groove integrally formed on one of the synthetic resin container main body and the synthetic resin lid for opening and closing the container main body. An airtight container that hermetically seals the inside of the annular seal groove, wherein an upper sealing surface is formed on one of an inward peripheral wall surface and an outward peripheral wall surface facing each other at an interval from each other, and The lower seal surface is formed by shifting the position in the height direction of the container body, and the upper seal surface and the lower seal surface are formed on the upper and lower portions of the annular seal protrusion along the height direction of the container body. An upper seal portion and a lower seal portion are formed so as to correspond to each of them, and the upper portion of the annular seal protrusion is formed to have high rigidity so that the upper seal portion slides on the upper seal surface. In addition, in order to elastically press the lower seal portion against the lower seal surface, a seal mechanism is provided in which a lower portion of the annular seal protrusion is formed to have a low rigidity so as to be flexibly deformable. container.

2. A gap is formed between one of the inward peripheral wall surface and the outward peripheral wall surface having the lower seam surface and the upper part of the annular seal projection to allow deformation of the upper part of the annular seal projection. The airtight container according to claim 1, wherein:

3. The hermetic container according to claim 1, wherein a plurality of the seal mechanisms are provided.