JP2981727B2 - Decompression airtight 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 reduced-pressure airtight container, and is particularly suitable as a container for protecting and storing cosmetics, medicines, foods and the like which are easily oxidized.

[0002]

2. Description of the Related Art Some cosmetics, medicines, foods and the like are composed of easily oxidizable components. Taking a cosmetic container as an example,
Conventionally, there is no airtight container of a type that reduces pressure. A conventionally known airtight container is, for example, as shown in FIG.
With only the inner cap 10
2 was fitted to the barrel 103, and the lid 101 was fitted to the middle tool 104 fitted to the outside of the barrel 103. In addition, the plate 1 in the figure
The cosmetic 106 stored in 05 moves up and down in the body tube 103 by rotating the screw tube 107.

[0003]

However, in such a conventional airtight container, as shown by an arrow in FIG.
However, it is difficult to maintain sufficient airtightness because a small amount of air leaks from between the inner tool 104 and the inner tool 104 and between the inner tool 104 and the lid 101. In addition, in order to ensure sufficient airtightness, for example, a sealing material must be fitted into a portion where air is likely to leak, which has a disadvantage of increasing the number of members. In addition, air often leaks from the sliding part of each cylinder,
No matter how much the sealing material is filled in the sliding portion, the sealing material will be deformed by repeated sliding, and air will eventually leak. For this reason, depending on the content of components such as cosmetics having a large amount of volatile components as recently, it has not been possible to cope with a simple airtight container having a double lid structure as described above.

[0004] In view of the above background, the invention of the present application has a decompression element added in order to ensure the airtightness of the container, and is completely different from the conventional airtight container. That is, an object of the present invention is to ensure the hermeticity.

[0005]

In order to achieve the above object, a reduced-pressure airtight container according to the present invention is a container comprising a cylindrical base and a cylindrical cap, wherein the cap comprises an inner lid and an outer lid. Forming a cap chamber between the inner lid and the outer lid , extending the peripheral portion of the bottom surface of the inner lid downward to form an extended portion.
Formed, sandwiching the extended portion between the base and the outer lid,
The lid is slidably fitted to the base, and advances and retreats to the outer lid.
It is screwed freely, and an elastic contact piece is provided on the periphery of the inner lid.
The contact piece elastically contacts the outer lid, and the inner lid rotates in conjunction with the rotation of the outer lid
Characterized by reducing the pressure in the container by and Rukoto raised center portion of the inner lid. At this time, the cylindrical base and the cylindrical
In a container consisting of a cap body, the cap body is
It consists of a lid and an outer lid, and forms a cap chamber between the inner lid and the outer lid.
And extend the peripheral edge of the bottom surface of the inner lid upward to extend
Is formed, and the mouth portion of the base is sandwiched between the extending portion and the outer lid.
Narrowing seen, along with the inner cover slidably fitted to the outer lid, freely screwed advance and retreat in the outer lid, and the said inner lid and the base of the mouth portion
The inner lid is rotated in conjunction with the rotation of the outer lid.
It is conceivable that the inside of the container is depressurized by raising the center of the container . Further, it is conceivable that the mouth portion of the base is formed in a polygonal shape and the mouth portion is inscribed in the inner peripheral surface of the inner lid. Furthermore, it is conceivable that the bottom surface of the inner lid swells toward the base side. It is also conceivable to provide an air vent passage between the outer lid and the inner lid. It is also conceivable that one of the screw portion of the inner lid and the screw portion of the outer lid is a male screw and the other is a female screw.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vacuum-tight container according to the present invention. FIGS. 1 to 5 show a first example of a reduced-pressure airtight container according to the present invention.
It is an embodiment of the invention. 1 to 4, a decompressed airtight container has a bottomed cylindrical base 1 and a bottomed cylindrical cap body 3.
Consists of The cap body 3 includes an inner lid 5 and an outer lid 7 fitted to the inner lid 5. The base 1 is made of, for example, glass or hard resin, the inner lid 5 is made of, for example, elastomer or soft resin, and the outer lid 7 is made of, for example, hard resin. The inner lid 5 extends a peripheral portion of the bottom surface 5a downward to form an extended portion 6, and the extended portion 6 is sandwiched between the mouth portion 2 of the base 1 and the peripheral side surface 8 of the outer lid 7 to form the extended portion 6. Is slidably screwed onto the base 1. In the upper part of the base 1, the lip 2
Is formed, and the inner lid 5 is covered with the mouth part 2 via a packing 9. A cap chamber 11 is formed between the inner lid 5 and the outer lid 7.

The bottom surface 5a of the inner lid 5 is bulged toward the base 1 side. An inner cap screw 13 made of a male thread is provided at the center of the inner cap 5 having such a shape, and is screwed to an outer cap screw 15 made of a female screw provided at the center of the outer cap 7 so as to be able to advance and retreat. Also,
The extended portion 6 of the inner lid 5 has a threaded portion 14 on the inner peripheral surface,
The screw portion 14 is slidably screwed into a screw portion 2a formed on the mouth portion 2 and a projection 17 is provided intermittently on the outer peripheral surface so that the projection 17 can slide on the outer lid 7. Fit. The portion of the outer lid 7 corresponding to the projection 17 is a concave groove 19. A slight gap G is provided between the extending portion 6 of the inner lid 5 and the peripheral side surface 8 of the outer lid 7 and between the mouth portion 2 of the base 1 and the cap body 3. An air vent passage is formed together with the space provided between the groove 19 and the space.

On the inner peripheral surface of the outer lid 7, an elastic contact piece 21 made of, for example, an elastomer or a soft resin is formed integrally with the inner lid 5, and the elastic contact piece 21 elastically contacts the outer lid 7.

A description will now be given of the lid and the principle of hermetic sealing in the above-structured depressurized airtight container. First, when the user holds the base 1 and rotates the outer lid 7, a state shown in the right half of FIG. 1 is obtained. When the outer lid 7 is further rotated, the inner lid screw portion 13 of the inner lid 5 screwed to the outer lid 7 is inserted into the outer lid screw portion 15 to be in a state as shown in the left half of FIG. As the inner lid 5 is linked to the outer lid 7 in this manner, the inner volume of the cap chamber 11 is reduced and the inner volume of the base 1 is expanded. As a result, the inside of the base 1 becomes negative pressure, while the inside of the cap chamber 11 is pressed against the bottom surface 5a of the inner lid 5 by the atmospheric pressure. For this reason, the bottom surface 5a of the inner lid 5 is deformed as shown in the left half of FIG. Due to the deformation of the bottom surface 5 a, the bottom surface 5 a of the inner lid 5 presses the top of the mouth portion 2 of the base 1 via the packing 9. 5b is a portion where the peripheral edge of the extending portion 6 protrudes upward. As a result, the inner lid 5 of the cap body 3 adheres firmly to the base 1. When the pressure in the base 1 is reduced, the air in the cap chamber 11 escapes from the air vent passage as shown in FIG.

Therefore, as described later, the airtightness of the container can be sufficiently maintained only by rotating the outer lid 7. As a result, oxidation of the contents can be prevented. Further, since the cap body 3 is firmly adhered to the base 1, the cap body 3 does not come off unexpectedly. As a result, it is possible to prevent the contents from being scattered or from being mixed with dust. Further, the reduced pressure does not wear each member. Therefore, the reduced-pressure airtight container according to the present invention is most suitable as a container for contents composed of components that are easily oxidized.

In the above-mentioned decompression, since the elastic contact piece 21 is in elastic contact with the outer lid 7, this becomes a resistance for the lid, and a slight time difference occurs between the airtightness and the subsequent decompression. That is, when the outer lid 7 is rotated, first, the screw portion 14 of the inner lid 5 is rotated.
Is screwed into the screw portion 2a of the base 1 and eventually hits the packing 9 to make the inside of the base 1 airtight. When the outer lid 7 is further rotated, the inner lid screw portion 1 of the inner lid 5 is rotated.
3 is inserted into the outer cover screw portion 15 of the outer cover 7 to reduce the pressure inside the base 1 as described above.
That is, since the elastic contact piece 21 is provided, the torque between the inner lid 5 and the outer lid 7 becomes larger than the torque between the inner lid 5 and the base 1, and as a result, the rotation operation for decompression is performed. Is stabilized, and the pressure inside the base 1 can be reliably reduced.

When the lid is closed, the inside of the base 1 is under a negative pressure, so that the inner lid 5 is pressed at atmospheric pressure, and the frictional force of the packing 9 is extremely large, and the base 1 and the inner lid 5 rotate. Very large torque. For this reason, when opening the lid, the inner lid screw portion 13 and the outer lid screw portion 15 rotate first, and the inner lid screw portion 13 of the inner lid 5 is pushed down. Then, the cap chamber 11 is moved from the gap G.
Since air from the outside flows into the inside and the bottom surface 5a of the inner lid 5 goes down, the reduced pressure state inside the base 1 is released and returns to the atmospheric pressure. Thereby, the frictional force of the packing 9 is reduced, and
The screw portion 14 of the base 1 and the screw portion 2a of the base 1 start rotating. If this rotation continues, the cap body 3 will come off soon. Thus, the reduced-pressure airtight container according to the present invention is:
Even when the lid is opened, a large force is not required, and the member is not worn.

FIGS. 6 to 13 show a second embodiment of the reduced-pressure airtight container according to the present invention. 6 to 8, the depressurized airtight container includes a bottomed cylindrical base 31 and a bottomed cylindrical cap body 33. The cap body 33 is
It comprises an inner lid 35 and an outer lid 37 fitted to the inner lid 35. The base 31 is made of, for example, glass or hard resin, the inner lid 35 is made of, for example, elastomer or soft resin, and the outer lid 37 is made of, for example, hard resin. The inner lid 35 extends the peripheral portion of the bottom surface 35a upward to form an extended portion 36.
The mouth portion 32 of the base 31 is sandwiched between the extending portion 36 and the peripheral side surface 38 of the outer lid 37, and the mouth portion 32 is forcibly fitted by the cap body 33. The portion forcibly fitted is indicated by P. A cap chamber 41 is formed between the inner lid 35 and the outer lid 37.

The bottom surface 35a of the inner cover 35 is bulged toward the base 31. An inner cap screw portion 43 formed of a female screw is provided at the center of the inner cover 35 having such a shape, and is screwed to an outer cover screw portion 45 formed of a male screw provided at the center of the outer cover 37 so as to be able to advance and retreat. Further, a protrusion 47 is provided intermittently on the outer peripheral surface of the extension portion 36, and the protrusion 47 is slidably fitted to the outer lid 37.
The mouth 32 formed on the upper portion of the base 31 has a screw portion 32 a on the outer peripheral surface, and the screw portion 32 a is slidable on a screw portion 44 formed on the inner peripheral surface of the peripheral side surface 38 of the outer lid 37. To screw. The portion of the outer lid 37 corresponding to the projection 47 is a concave groove 49. Extension 36 of inner lid 35 and outer lid 3
7, and a slight gap G is provided between the mouth portion 32 of the base 31 and the cap body 33,
The space provided between the protrusion 47 and the concave groove 49 constitutes an air vent passage.

A description will be given of the lid and the principle of airtightness by the lid in the above-structured depressurized airtight container. First base 31
When the outer lid 37 is turned and the outer lid 37 is rotated, the state shown in the right half of FIG. When the outer lid 37 is further rotated,
The inner cover screw portion 43 of the inner cover 35 screwed to the outer cover 37 is screwed into the outer cover screw portion 45 to be in a state as shown in the left half of FIG. As the inner lid 35 is linked to the outer lid 37 in this way, the inner volume of the cap chamber 41 is reduced and the inner volume of the base 31 is expanded. As a result, the inside of the base 31 becomes negative pressure, and the bottom surface 35a of the inner lid 35 is pressed by the atmospheric pressure in the cap chamber 41. For this reason, the bottom surface 35a and the extending portion 36 of the inner lid 35 are deformed as shown in the left half of FIG. Due to this deformation, the extending portion 36 presses the inner peripheral surface of the mouth portion 32 of the base 31. Since the lip portion 32 is forcibly fitted P to the peripheral side surface 38 of the inner lid 35 and the outer lid 37 and regulated, the bottom surface 35a is slightly recessed. As a result, the inner lid 35 of the cap body 33 adheres firmly to the base 31. When the pressure in the base 31 is reduced, the air in the cap chamber 41 escapes from the air vent passage as shown by an arrow in FIG.

Therefore, as will be described later, the airtightness of the container can be sufficiently maintained only by rotating the outer lid 37. As a result, oxidation of the contents can be prevented. Further, since the cap body 33 is firmly adhered to the base 31, the cap body 33 does not come off unexpectedly. As a result, it is possible to prevent the contents from being scattered or from being mixed with dust. Further, the reduced pressure does not wear each member. Therefore, the reduced-pressure airtight container according to the present invention is most suitable as a container for contents composed of components that are easily oxidized.

In the above-described decompression, airtightness by the lid and subsequent decompression proceed simultaneously. That is, as the bottom surface 35a of the inner cover 35 rises inside the outer cover 37 by the rotation of the outer cover 37, the inside of the cap chamber 41 receives the force in the direction of the arrow as described above. As a result, the mouth portion 32 of the base 31 sandwiched between the inner lid 35 and the outer lid 37 is further extended by the extending portion 36 with the advancement of the inner lid 35, and the peripheral side surface 38 of the outer lid 37 is further increased
Side. Therefore, as the inner lid 35 advances, the inner lid 35 of the cap body 33 is
And the inside of the base 31 is made airtight. Further, as described above, as the inner lid 35 advances, the pressure in the base 31 is reduced correspondingly.

The opening is opposite to the above. That is, when the outer lid 37 is rotated in the opposite direction, the base 3
1, the internal volume of the cap chamber 41 increases. Further, since air from the outside flows into the cap chamber 41 from the gap G accompanying the above, the depressurized state inside the base 31 is released and the pressure returns to the atmospheric pressure. As a result, the cap chamber 41
Since the force in the direction of the arrow is not applied to the inside, if the cap body 33 continues to rotate, the cap body 33 comes off soon. Thus, the reduced-pressure airtight container according to the present invention is:
Even when the lid is opened, a large force is not required, and the member is not worn.

The present invention is not limited to the above embodiment. For example, the method of screwing the inner lid 5 and the outer lid 7 is opposite to that of the above embodiment, in which the outer lid screw portion 15a is a male screw,
The inner cover screw portion 13a may be a female screw. FIG. 5 shows such a case in the first embodiment.

The number of the elastic contact pieces 21 is arbitrary.
However, it is desirable to dispose a plurality of the elastic contact pieces 21 in a point-symmetrical manner from the viewpoint of improving the usability of the rotation of the cap body. When the elastic contact piece 21 is formed of a sufficiently soft material or a thin material, it may be provided so as to be inscribed in the entire circumference of the outer lid 7.

When the elastic contact piece 21 is formed integrally with the inner lid 5, the same material as that of the inner lid 5 is used, but it can be provided separately from the inner lid 5. In this case, for example, rubber or the like can be used.

The mouth 32 of the base 31 may be formed in a polygonal shape, and the mouth 32 may be inscribed in the inner peripheral surface of the inner lid 35. FIG. 10 and FIG. 11 show such a case. The outer shape of the base 31 as well as the mouth 32 is formed in a polygonal shape.

Also, the method of screwing the inner lid 35 and the outer lid 37 is as follows.
Contrary to the above embodiment, the outer cap screw portion 45a may be a female screw and the inner cap screw portion 43a may be a male screw. FIGS. 9 and 13 show such a case in the second embodiment.

The contents are most suitable not only for cosmetics, but also for those composed of easily oxidizable components such as medicines and foods. The contents can be applied not only to gel-like materials but also to powders, granules, and liquids.

When a projection is provided on the outer peripheral surface of the inner lid over the entire circumference, a small hole for bleeding air (not shown) is formed in the outer lid 7.
May be provided.

In the present invention, "cylindrical" means that the cross-sectional shape of the container includes a shape other than a circle, for example, an oval or a square. For convenience, in the drawings, parts having the same function are denoted by the same reference numerals, and description thereof will be omitted.

[0027]

As described above, since the reduced-pressure airtight container according to the present invention can ensure the airtightness of the container, it is most suitable as a container for cosmetics, medicines, foods, etc. composed of easily oxidizable components. It is.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an embodiment of a reduced-pressure airtight container according to the present invention.

FIG. 2 is an enlarged view of FIG. 1A and shows an air vent passage.

FIG. 3 is a cross-sectional view of FIG. 1BB.

FIG. 4 is a cross-sectional view of FIG. 1C-C.

FIG. 5 is a front sectional view showing another embodiment of the reduced-pressure airtight container according to the present invention.

FIG. 6 is a front sectional view showing another embodiment of the reduced-pressure airtight container according to the present invention.

FIG. 7 is a cross-sectional view of FIG. 8E-E showing an air vent passage.

FIG. 8 is a sectional view taken along the line DD in FIG. 6;

FIG. 9 is a front sectional view showing still another embodiment of the reduced-pressure airtight container according to the present invention.

FIG. 10 is a front sectional view showing still another embodiment of the reduced-pressure airtight container according to the present invention.

FIG. 11 is a diagram showing an air vent passage.

FIG. 12 is a cross-sectional view of FIG. 10F-F.

FIG. 13 is a front sectional view showing still another embodiment of the reduced-pressure airtight container according to the present invention.

FIG. 14 is a sectional view showing an example of a conventional airtight container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Mouth part 2a Screw part 3 Cap body 5 Inner lid 5a Bottom surface 5b Peripheral part 6 Extension part 7 Outer lid 8 Peripheral side surface 9 Packing 11 Cap chamber 13 Inner lid screw part 14 Screw part 15 Outer lid screw part 17 Projection part 19 Recessed groove 21 Elastic contact piece 23 Inner cap screw part 25 Outer cap screw part 31 Base 32 Mouth part 32a Screw part 33 Cap body 35 Inner cap 35a Bottom surface 36 Extension part 37 Outer cap 38 Peripheral side surface 41 Cap chamber 43 Inner cap screw part 44 Screw part 45 Outer lid screw part 47 Projection part 49 Groove

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65D 35/44-35/54 B65D 39/00-55/16

Claims (6)

(57) [Claims] 1. A container comprising a cylindrical base and a cylindrical cap, wherein the cap comprises an inner lid and an outer lid, wherein a cap chamber is formed between the inner lid and the outer lid. of
The peripheral part of the bottom surface is extended downward to form an extended part,
Part between the base and the outer lid, and slide the inner lid
It fits freely and is screwed into the outer lid so that it can move forward and backward.
An elastic contact piece is provided on the periphery of the inner lid, and the elastic contact piece is elastically attached to the outer lid.
Contact, the inner lid rotates in conjunction with the rotation of the outer lid, and the center of the inner lid
Vacuum airtight container, which comprises reducing the pressure in the container by Rukoto is raised. 2. A cylindrical base and a cylindrical cap body.
The container is made of an inner lid and an outer lid.
To form a cap chamber between the inner lid and the outer lid,
The peripheral portion of the bottom is extended upward to form an extension,
The mouth of the base is sandwiched between the part and the outer lid, the inner lid is slidably fitted to the outer lid, and the inner lid and the base of the base are screwed into and out of the outer lid. Forced mating, outside
The inner lid rotates in conjunction with the rotation of the lid, and the center of the inner lid is pulled up
A reduced-pressure airtight container characterized in that the inside of the container is depressurized by being evacuated. 3. The reduced-pressure airtight container according to claim 2 ,
A depressurized airtight container characterized in that a mouth portion of the base is formed in a polygonal shape and the mouth portion is inscribed in an inner peripheral surface of an inner lid. 4. A vacuum airtight container according to any one claim 1 or claim 2, vacuum airtight container above the lid, characterized in that the bottom surface is bulged towards the base. 5. A vacuum airtight container according to any one claim 1 or claim 2, vacuum airtight container and providing a air vent passage between the outer lid and the inner lid. 6. The method of Claim 1 or claim 2 vacuum airtight container of any one according, one and the threaded portion and the threaded portion of the outer lid of the inner cap is externally threaded, the other is a female thread And a vacuum-tight container.