JP2003246342A - Pressure regulating vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure regulating vessel of a simple configuration which can prevent any deformation or breakage of the vessel by effectively avoiding excessive high pressure in the vessel by the gas generated from the content. <P>SOLUTION: This pressure regulating vessel 20 has a pressure regulating valve 10 which is disposed inside a part with a vent hole 17 to the outside air formed therein, and regulates the internal pressure in the vessel with the content sealed therein. The pressure regulating valve 10 comprises a line-contact seal member 19 having a line-contact fitting part 18 on a tip thereof and an abutting wall surface part 21 with the line-contact fitting part 18 abutted in a tightly fitted manner. The container is sealed by the tightly fitted condition between the line-contact fitting part 18 and the abutting wall surface part 21 to shield a vent passage from the inside of the vessel to the vent hole 17. The line-contact fitting part 18 slides along the abutting wall surface part 21 under the pressure in the direction across the abutting direction X, and a space is formed between the line-contact fitting part 18 slides along the abutting wall surface part 21 to release the pressure. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure adjusting container having a pressure adjusting valve which is arranged inside a portion where a vent hole to the outside air is formed and which adjusts the pressure inside a container in which contents are enclosed. Regarding pressure control valve.

[0002]

2. Description of the Related Art For example, a container for storing cosmetics, chemicals, paints, foods, etc. is a gas generated from the contents when the cap is attached to the neck and the contents are enclosed inside. This may cause the container to expand, which may deform or damage the container. Further, even in a container in which the contents are enclosed without attaching a cap, or an outer container for a battery in which electrodes, an electrolyte solution, etc. are enclosed, the container is deformed by the pressure of the gas generated from the contents or the electrolyte solution. It may be damaged or damaged.

In order to prevent the container from being deformed or damaged due to the pressure of the generated gas, it is necessary to provide a gas releasing mechanism in the cap or the like to remove the generated gas, but not only to allow the gas to pass therethrough. If the internal pressure is not higher than a predetermined pressure, unless the mechanism prevents the contents from flowing out, the contents may leak when the container is overturned. Therefore, for example, Japanese Patent Laid-Open No. 5-27
Japanese Patent No. 0559 describes a container with a cap capable of eliminating the gas generated while preventing the contents from flowing out.

The container described in JP-A-5-270559 has a gas passage hole at the center of the upper part of the cap, and a packing-like gas venting mechanism which covers the upper end opening of the neck of the container body while sandwiching the gas inside. The cap is attached to the neck. The degassing mechanism includes a breathable sheet on the upper surface side and a valve body made of an elastic film on the lower surface side, which are laminated with an annular spacer interposed therebetween, so that gas can be eliminated through the breathable sheet, and It prevents the contents from flowing out.

However, according to the container described in Japanese Unexamined Patent Publication No. 5-270559, the packing sandwiched between the inner ceiling surface of the cap in which the gas passage hole is formed and the neck portion of the container body serves as a degassing mechanism. Since it is necessary to have a special and complicated structure in order to have a function, the manufacturing process becomes complicated and the cost increases as the number of parts increases. Also, especially when accommodating foamable contents,
Since the gas generated while the contents are caught passes through the breathable sheet, the contents adhere to the breathable sheet, causing clogging and impairing the ventilation function.

The present invention has a simple structure and effectively prevents the pressure inside the container from becoming excessively positive pressure or negative pressure due to gas generated from the contents or suction of the gas. Therefore, it is an object of the present invention to provide a pressure adjustment container and a pressure adjustment valve that can easily prevent deformation and damage of the container.

[0007]

According to the present invention, there is provided a pressure adjusting valve having a pressure adjusting valve for adjusting the internal pressure of a container in which a content is sealed and which is arranged inside a portion where a vent hole to the outside air is formed. In the container, the pressure regulating valve is composed of a line contact seal member having an annular line contact close contact portion at the tip, and a contact wall surface portion for contacting the line contact close contact portion in a close contact state,
A force in the direction in which the line contact close contact portion intersects the contact direction while sealing by the close contact state between the line contact close contact portion and the contact wall surface portion to block the ventilation path from the inside of the container to the ventilation hole. By providing a pressure adjustment container that receives the pressure and slides along the contact wall surface portion to form a gap between the line contact contact portion and the contact wall surface portion to release the pressure, It has achieved its purpose.

Further, the present invention is a pressure regulating valve which is arranged inside a portion where a vent hole to the outside air is formed and regulates the pressure inside a container in which the contents are sealed, and which has an annular shape at its tip. A line contact seal member having a line contact close contact portion, and a contact wall surface portion for contacting the line contact close contact portion in a close contact state, and sealing is performed by the close contact state between the line contact close contact portion and the contact wall surface portion. By blocking the ventilation path from the inside of the container to the ventilation hole and slidingly moving along the contact wall surface portion by receiving a force in the direction in which the line contact contact portion intersects the contact direction, The above object is achieved by providing a pressure regulating valve that releases a pressure by forming a gap between the line contact close contact portion and the contact wall surface portion.

[0009] In the above description, the line contact close contact portion, which comes into close contact with the contact wall surface portion, comes into contact with the contact wall surface portion in the contact direction by contacting at a narrow linear contact surface, for example. It is a part that can slide and move in a direction of intersecting planes and does not mean a part that is in contact with a "line" that does not have an area. It means a linear portion that abuts with a certain width that is possible.

Further, the abutting wall surface portion for abutting the line contact close contact portion has a desired contact surface shape so as not to be deformed or moved while the line contact close contact portion is in contact. Is a wall surface portion provided in a state of being held and fixed to such an extent that the property (sealing property) can be secured. By fixing the shape of the contact surface in this way, it is possible to secure the desired adhesion (sealability) by abutting the ring-shaped line contact adhesion part on the contact wall surface part in a stable state. become. In addition, since the line contact contact portion has an annular shape, it is possible to ensure uniform contact pressure and sealability. The “ring” is preferably a perfect circular ring, but may be an ellipse, an ellipse, a square, a hexagon, or any other continuous shape.

Further, the "pressure inside the container" regulated by the pressure regulating valve is not limited to the case where the inside is positive pressure due to the generation of gas from the contents, and the gas (air etc.) depending on the contents. It also includes the case where the inside has a negative pressure due to the suction.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The first preferred embodiment of the present invention shown in FIG.
The pressure adjusting valve 10 provided in the pressure adjusting container 20 according to the embodiment is a so-called molded packing type adjusting valve,
For example, it is adopted in the pressure adjusting container 20 that contains a hair dye as a content that generates a gas such as oxygen. According to the first embodiment, the pressure regulating container 20 is one in which the cap 16 is screwed on the mouth portion 14 of the container body 11 and the hair dye is enclosed inside the container. The container body 11 is composed of a flexible, for example, polyethylene-made substantially cylindrical outer container 12 and a nylon inner bag 13 that is mounted inside the outer container 12 to accommodate a hair dye. It is a heavy container. Then, when the hair coloring agent is used by attaching a comb-like discharge nozzle or the like to the mouth portion 14 of the container body 11, the pressure adjusting container 20 holds the outer container 12 by hand and deforms the hair by pressing. The agent can be discharged, and when the pressed state is released, the outer container 12
It has a function as a so-called laminated peeling container that can restore the outer container 12 to the original substantially cylindrical shape while sending air into the space 15 between the inner bag 13 and the inner bag 13.

On the other hand, the hair dye to be contained is obtained, for example, by adding and mixing the second agent contained in another container to the first agent previously contained in the container body 11.
A gas in a foamed state is generated by mixing the first agent and the second agent. In addition, such mixing of the first agent and the second agent is performed in a state where the cap 16 is screwed on the mouth portion 14 of the container body 11. Furthermore, when the hair dye remaining in the container body 11 is stored or discarded, the cap 16 is screwed on the mouth portion 14 of the container body 11. According to the first embodiment, the pressure regulating valve 10 generates gas even when the hair coloring agent, which is a gas-generating content, is housed in the pressure regulating container 20 equipped with the cap 16. It is adopted so that the internal pressure can be prevented from rising excessively and the damage and deformation of the pressure adjusting container 20 and the violent occurrence can be avoided.

Further, according to the first embodiment, the pressure regulating valve 10 is arranged inside the portion where the vent hole 17 to the outside air is formed and the pressure inside the container 20 in which the hair dye is enclosed. And a line contact seal member 19 having an annular line contact close contact portion 18 at the tip, and the line contact close contact portion 1
Abutting wall surface portion 21 for abutting 8 in close contact over the entire circumference
The line contact contact portion 18 and the contact wall surface portion 21 are sealed by the close contact state, and the air vent 17
2 is blocked (see FIG. 2A), and the line contact contact portion 18 receives a force in a direction intersecting the contact direction X and slides in the surface direction along the contact wall surface portion 21. By doing so, the liquid is slightly deformed to the extent that it seeps out, and a gap is created between the line contact close contact portion 18 and the contact wall surface portion 21 to release the pressure (see FIG. 2B). .

Further, according to the first embodiment, the pressure regulating container 20 has the cap 16 on the neck portion 14 of the container body 11.
The cap 16 is provided with a vent hole 17 and an abutment wall surface portion 21, and is attached to the packing 26 integrally attached to the inner ceiling portion of the cap 16. Is provided with a line contact seal member 19.

The cap 16 is, for example, a plastic molded product formed by injection molding, has a circular drum shape with an opening on the lower surface side, and has a thread 23 for female screw formed on its inner peripheral surface to form an outer peripheral surface. It is threadedly mounted on the mouth portion 14 of the container body 11 on which the male thread 24 is formed. Further, the ceiling plate 25 of the cap 16 is formed with a ventilation hole 17 at one position at a position close to the peripheral edge, and the lower surface of the ceiling plate 25 (the inner ceiling surface 3 of the cap 16).
3) A ring-shaped packing support rib 2 protruding downward from
7 is a line contact seal member 19 provided on the packing 26.
It is provided so as to be arranged concentrically on the outside of.

The packing 26 is a disc-shaped member made of polyolefin, ethylene vinyl acetate copolymer (EVA) resin, or the like, and is integrally mounted so as to be fitted into the inner ceiling portion of the cap 16 in advance, and the cap 16 is screwed. When fitted together, it is sandwiched between the inner ceiling surface 33 of the cap 16 and the upper end of the mouth portion 14 of the container body 11.
The packing 26 is provided with an annular pedestal rib 28 projecting upward on the upper surface side of the peripheral edge portion (the peripheral edge ceiling plate 25 side), and the pedestal rib 28 is in close contact with the peripheral edge portion of the inner ceiling portion of the cap 16. It is arranged to hold a space for the ventilation passage 22 between the flat plate portion 29 inside the pedestal rib 28 and the inner ceiling surface 33 of the cap 16. Also cap 16
The tips of the packing support ribs 27 projecting downward from the inner ceiling surface 33 contact the upper surface of the flat plate portion 29 of the packing 26 to hold the space between the flat plate portion 29 and the ceiling plate 25 in a more stable state. is doing.

Further, according to the first embodiment, an annular skirt rib 30 is provided on the lower surface side of the packing 26 so as to project downward, and when the cap 16 is screwed and attached, the skirt rib 30 is screwed. The ribs 30 are the lips 14 of the container body 11.
It is inserted so as to come into close contact with the inner wall surface of the upper end opening portion of the above, and the sealing property between the upper end opening of the neck portion 14 and the packing 26 is improved. A circular exhaust hole 3 is formed in the center of the packing 26 so as to penetrate the central portion of the flat plate portion 29.
1 is formed, and a cylindrical line contact seal member 19 is provided so as to surround the exhaust hole 31 so as to project upward.

The line contact seal member 19 is formed integrally with the packing 26 as a part of the packing 26, has a substantially triangular cross-sectional shape, and has an acute-angled upper end portion which is an annular line. The contact adhesion portion 18 is configured. The line contact contact portion 18 constitutes the contact wall surface portion 21,
Packing support ribs 2 on the ceiling plate 25 of the cap 16
By making contact with the lower surface of the portion located inside 7 from the upper side in the vertical direction with the contact direction X as the contact direction in a tight contact state, the gap between the cap 16 and the packing 26 is sealed, From the neck 14 of the container body 11 to the cap 1
The ventilation path 22 reaching the ventilation hole 17 formed in 6 is blocked. Further, according to the first embodiment, the ventilation groove 32 is formed on the upper surface side of the flat plate portion 29 of the packing 26 so as to be extended outward in the radial direction from the base end portion of the line contact seal member 19. Therefore, through the ventilation groove 32, it is possible to ventilate the lower part of the packing support rib 27 so as to dive.

Further, according to the first embodiment, the movable direction of the line contact close contact portion 18 is the plane parallel to the surface of the upper end opening of the neck portion 14 of the container body 11 (the discharging direction of the contents from the upper end opening). And the surface perpendicular to the direction). In addition, the upper end opening of the mouth portion 14 has a large area closed by a packing 26, and a line contact seal member 19 provided so as to surround the circular exhaust hole 31 has a substantially triangular cross-sectional shape. The exhaust hole 3
1 gradually increases the cross-sectional area from the lower end portion of the line contact seal member 19 toward the line contact close contact portion 18 at the upper end portion, and the line contact close contact portion 18 has a diameter larger than that of the opening edge portion at the lower end of the exhaust hole 31. It is arranged on the outside in the direction. Therefore, at the time of accommodating the normal hair dye in which the gas is not generated in the pressure adjusting container 20 with the cap 16 attached, the flow of the hair dye from the lips 14 of the container body 11 to the line contact adhesion part 18 Packing 26 whose passage functions as a hydraulic pressure limiting wall
And narrowed by the lower end of the line contact seal member 19,
In addition, since the movable direction of the line contact close contact part 18 is along the plane perpendicular to the discharge direction of the hair dye, it is effective that the hydraulic pressure by the hair dye is directly applied to the line contact close contact part 18. Even if the container 20 is shaken or turned upside down, it is possible to reliably secure the sealing property due to the close contact of the line contact close contact part 18 to the contact wall surface part 21.

Then, the pressure regulating container 2 of the first embodiment.
0 and the pressure regulating valve 10, the vent hole 17 and the contact wall surface portion 21 are integrally formed when the cap 16 is molded,
With a simple structure in which the line contact seal member 19 is integrally formed when the packing 26 is molded, it is possible to prevent the pressure inside the container 20 from becoming an excessively positive pressure due to gas or the like generated from the hair dye that is the content. Effectively avoid the container 20
It is possible to easily prevent deformation and damage of the. That is, after the cap 16 is attached to the mouth portion 14 of the container body 11, when the amount of generated gas is small and the internal pressure of the container body 11 is not so high, the line contact sealing portion of the line contact seal member 19 of the packing 26 is attached. 18 retains a state in which it is in close contact with the contact wall surface portion 21 over the entire circumference thereof, and
The ventilation path 22 between the inside of the and the ventilation hole 17 is blocked. As a result, the upper end opening of the mouth 14 is covered with the packing 26, and the hair dye is sealed in the container body 11 and does not leak out of the container body 11.

On the other hand, when the amount of generated gas increases and the internal pressure of the container body 11 increases, for example, when the pressure becomes equal to or higher than about 0.1 kgf / cm ² , the line contact sealing member 19
Receives the pressure in the direction intersecting the contact direction X by the pressure of the gas loaded in the direction perpendicular to the side surface thereof, and deforms so as to bend to the outside Y, so that the line contact adhesion portion 18 is abutted. The line contact adhesion portion 1 that was slid to the outside Y along the contact wall surface portion 21 and was in close contact over the entire circumference
A gap is created in at least a part between the contact wall portion 8 and the contact wall surface portion 21. Therefore, it is possible to smoothly remove the gas from the ventilation hole 17 by allowing the gas or the liquid generated through this gap to pass therethrough and flowing into the ventilation path 22 through the ventilation groove 32. It is possible to effectively avoid breakage, deformation, and outbursts.

When the pressure inside the container body 11 decreases due to the elimination of gas, the line contact seal member 19 naturally restores from its bent state to its original shape, and the line contact close contact portion 18 comes into contact with the wall surface portion. The container 21 is brought into close contact with the hair 21 again over the entire circumference to return to the state in which the hair dye is enclosed in the container body 11.

Further, according to the first embodiment, the contained hair dye has a foaming property, and gas is generated while the hair dye is caught, but the generated gas is Since it is eliminated through a gap of a considerable size generated between the line contact close contact portion 18 and the contact wall surface portion 21 without passing through the breathable sheet, the hair dye entrapped causes clogging. It is possible to effectively avoid the occurrence of.

Further, according to the first embodiment, the ring-shaped packing support ribs 27 projecting downward from the inner ceiling surface 33 of the cap 16 are concentrically arranged outside the line contact seal member 19. In addition, the packing support rib 27 is brought into contact with the upper surface of the flat plate portion 29 of the packing 26, and
Since the space between the ceiling plate 25 and the ceiling plate 25 is held, it is possible to prevent the packing support ribs 27 from excessively adhering the line contact adhering portion 18 and the abutting wall surface portion 21 to raise the sealing property too much. Then, when the internal pressure becomes higher than a predetermined pressure, the pressure regulating valve 10 is guaranteed to function reliably.

Furthermore, according to the first embodiment, since the line contact seal member 19 and the line contact close contact portion 18 are integrally formed with the packing 26 and are a single member, the cap 16 is attached. When the mouth portion 14 is closed by closing it, it is possible to surely secure the sealing property.

As described above, the encapsulated hair dye does not leak when the pressure adjusting container 20 is shaken or turned upside down, and the pressure before the internal pressure reaches a pressure at which the pressure adjusting container 20 is damaged or burst. The regulating valve 10 can reliably function to smoothly release the excessively high internal pressure.

FIG. 3 shows a pressure regulating valve 40 according to the second embodiment of the present invention. According to the second embodiment, the annular line contact seal member 42 having a triangular cross-sectional shape is provided so as to protrude downward from the central portion of the lower surface of the ceiling plate 43 of the cap 41 (the inner ceiling surface 52 of the cap 41). Has been. On the other hand, in the packing 44, a cylindrical packing support rib 47 is concentrically arranged inside the line contact seal member 42 so as to surround a circular exhaust hole 46 formed through the center of the flat plate portion 45. It is provided so as to project upward, and the tip of this is provided on the inner ceiling surface 52 of the cap 41.
To hold the space for the air passage 48 between the flat plate portion 45 and the inner ceiling surface 52 in a more stable state. Further, a notch groove 49 that connects the exhaust hole 46 and the ventilation path 48 is formed in the upper end portion of the packing support rib 47. Then, according to the second embodiment, the annular line contact contact portion 50 at the tip of the line contact seal member 42 is formed.
Is the packing 4 located outside the packing support rib 47.
The upper surface of the flat plate portion 45 of No. 4 is the contact wall surface portion 51, and the contact wall surface portion 51 is in contact with the contact wall surface portion 51 over the entire circumference.

Also according to the second embodiment, the cap 41
When the screw is attached to the mouth portion 14 (see FIG. 1) of the container body 11 to encapsulate the contents, the line contact contact portion 50 is brought into close contact with the contact wall surface portion 51 to leak the contents. In addition, when the amount of gas generated from the contents increases and the internal pressure of the container body 11 increases, the pressure of the gas causes a gap between the line contact adhesion portion 50 and the contact wall surface portion 51. Is produced, and the same operational effect as that of the first embodiment is obtained.

Further, according to the second embodiment, the movable direction of the line contact close contact portion 50 is parallel to the surface of the upper end opening of the neck portion 14 of the container body 11 (the discharging direction of the contents from the upper end opening). The surface of the upper end opening of the neck portion 14 is closed by the packing 44 in most areas, and the line contact sealing member 42 having the line contact sealing portion 50 is formed. Packing support rib 4 inside
7 are arranged concentrically. Therefore, when the normal hair dye in which the gas is not generated is stored in the pressure adjusting container 20 with the cap 16 attached, the flow of the hair dye from the lips 14 of the container main body 11 to the line contact close contact part 50. Since the passage is narrowed by the packing 44 and the packing support rib 47 which function as a liquid pressure limiting wall, and the movable direction of the line contact close contact portion 50 is along the plane perpendicular to the discharge direction of the hair dye. Effectively avoiding the fluid pressure of the hair dye from being directly applied to the line contact adhesion part 50, and even when the container 20 is shaken or turned upside down as in the first embodiment,
It is possible to reliably secure the sealing property by the close contact of the line contact close contact part 50 with the contact wall surface part 51.

FIG. 4 shows a so-called piston valve type pressure adjusting valve 60 according to a third embodiment of the present invention.
According to the third embodiment, the vent hole 61 has the cap 62.
Is formed as a central penetrating portion of a ventilation sleeve 64 provided at the center of the ceiling plate 63 of the above, and the supporting cylindrical portion 67 of the valve body 66 having the line contact seal member 65 at the lower end portion is formed in the central penetrating portion. Is inserted and locked to support and fix the line contact seal member 65 to the inner upper end portion of the cap 62. The line contact seal member 65 has a flat frustoconical shape, and an edge portion of a peripheral edge of the lower end portion, which is sharpened at an acute angle, constitutes an annular line contact contact portion 68. Further, on the side surface of the support columnar portion 67, a notch groove 69 is provided which extends vertically and is extended.
Is provided to form a ventilation path 70 that communicates the inside of the cap 62 with the outside air, and the ventilation sleeve 6 is provided.
At the lower end of 4, the communication hole 7 continuous with the cutout groove 69 is formed.
1 is provided.

According to the third embodiment, the ventilation sleeve 6 projects downward from the ceiling plate 63 of the cap 62.
4 and a valve body 66 are provided concentrically with the contact cylindrical body 72, and the inner surface of the contact cylindrical body 72 is used as a contact wall surface portion 74, and the tip of the peripheral edge of the line contact seal member 65 is provided. The circular line contact contact portion 68 is in contact with the entire circumference in a contact state. An annular protrusion 75 is provided at the lower end of the contact cylindrical body 72 forming the contact wall surface portion 74 so as to protrude inward. The annular protrusion 75 contacts the cylindrical body 72.
Since it is provided at the lower end portion of the hair dye, the line contact contact portion 68 is hidden behind the annular protruding portion 75 when viewed from the protruding direction of the hair dye, so that the annular protruding portion 75 comes into line contact with the container body 11. By functioning as a fluid pressure limiting wall that is interposed between the hair dye and the close contact portion 68, and narrowing the flow path of the hair dye from the neck portion 14 of the container body 11 to the line contact close contact portion 68, the liquid pressure by the hair dye is reduced. It is possible to effectively prevent the load from being directly applied to the line contact contact portion 68. Further, the annular protrusion 75 can support the valve element 66 from below when a high pressure is applied from above by the outside air or the like, and the valve element 6 can be supported.
Protect 6 from falling.

Further, according to the third embodiment, the abutting cylindrical body 7 is projected downward from the ceiling plate 63 of the cap 62.
Skirt ribs 73 arranged concentrically with the outer side of 2
The skirt rib 73 is inserted so as to be in close contact with the inner wall surface of the upper end opening portion of the neck portion 14 (see FIG. 1) of the container body 11 when the cap 62 is attached. The sealability between the upper end opening of the mouth portion 14 and the donut-shaped packing 74 sandwiched by the inner surface of the ceiling plate 63 is improved.

Also according to the third embodiment, when the cap 62 is screwed onto the neck portion 14 of the container body 11 to enclose the contents, the line contact adhesion portion 68 is brought into contact with the contact wall surface portion 74.
When the internal pressure of the container body 11 becomes high due to an increase in the amount of gas generated from the contents, the line contact adhesion part is prevented from leaking. By creating a gap between the 68 and the contact wall surface portion 74, the same operational effect as that of the first embodiment can be obtained.

The present invention is not limited to the above-mentioned embodiments, and various modifications can be made. For example, the pressure adjusting container having the pressure adjusting valve of the present invention does not necessarily have to be a laminated peeling container having a double structure, and a container for enclosing an internal solution without using a cap, an electrode, an electrolytic solution or the like is enclosed. It may be an outer container for a battery or the like. Further, the content stored in the container does not necessarily have to be a hair dye, and other cosmetics, chemicals, paints, foods, and other various gas-generating contents can be stored. It may be a content that absorbs and creates a negative pressure inside the container. Further, it is preferable that the line contact / adhesion portion is continuous in an annular shape, and it is particularly preferable that the line contact / adhesion portion is a true circular shape.

The pressure regulating valve of the present invention is shown in FIG.
As shown in FIG.
By allowing 1 to slide inward as well as outward along the contact wall surface portion 82, gas is discharged from the inside of the container when the internal pressure of the container becomes excessively high in the positive pressure direction. In addition, even if the internal pressure of the container becomes excessively high in the negative pressure direction due to absorption of gas or the like, it becomes possible to easily prevent the deformation and damage of the container by sending the outside air into the inside of the container. Moreover, as shown in FIG.
It is also possible to limit the inward sliding movement of 1 by, for example, the limiting rib 83 to operate the valve only when the internal pressure of the container becomes excessively positive, and as shown in FIG.
It is also possible to limit the outward sliding movement of the line contact contact portion 81 by, for example, the limiting ribs 84 to operate the valve only when the internal pressure of the container becomes excessively negative.

As described above, by restricting the operating direction of the valve in only one direction, the valve can be operated more reliably and malfunction can be prevented. Note that FIG.
In the case of (b), it is possible to prevent foreign matter from entering from the outside, and in the case of FIG. 5 (c), it is possible to prevent the leakage of the contents. The predetermined pressure at which the valve starts to operate can be set as appropriate in consideration of the strength of the pressure control container, etc. Can be adjusted.

[0038]

According to the pressure adjusting container and the pressure adjusting valve of the present invention, the pressure inside the container becomes excessively positive or negative due to the gas generated from the contents due to the simple structure. It is possible to effectively avoid this, and easily prevent the container from being deformed or damaged.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a main part of a pressure control container having a pressure control valve according to a first embodiment of the present invention.

FIG. 2 (a) is an enlarged view of a portion A of FIG. 1 showing a state in which a pressure regulating valve blocks an air passage, and FIG. 2 (b) shows a state in which a pressure is released by forming a gap. FIG.

FIG. 3 is a schematic sectional view of a cap that employs a pressure regulating valve according to a second embodiment of the present invention.

FIG. 4 is a schematic sectional view of a cap that employs a pressure regulating valve according to a third embodiment of the present invention.

5A is an explanatory view of a pressure regulating valve in which a line contact close contact portion can be slid outwardly and inwardly along an abutment wall surface portion, and FIG. 5B is a slidable outward movement only. FIG. 3C is an explanatory view of the pressure regulating valve thus configured, and FIG. 7C is an explanatory view of the pressure regulating valve that can be slid only inward.

[Explanation of symbols]

10,40,60 Pressure regulating valve 11 container body 12 Outer container 13 inner bag 14 Mouth 16,41,62 Cap 17,61 Vent hole 18, 50, 68, 81 Wire contact adhesion part 19,42,65,80 Line contact seal member 20 Pressure control container 21, 51, 74, 82 Contact wall surface 22,48,70 Ventilation path 25,43,63 cap ceiling plate 26,44,74 packing 29,45 Packing flat plate 31,46 Exhaust hole 32 Ventilation groove 33,52 inner ceiling surface of cap 49,69 Notch groove 64 Ventilation sleeve 66 valve 72 Contact cylinder 75 Annular protrusion 83,84 Restriction rib X Abutting direction

Claims (6)

[Claims] 1. A pressure adjusting container having a pressure adjusting valve which is arranged inside a portion where a vent hole to the outside air is formed and which adjusts the pressure inside the container in which the contents are sealed. The valve is composed of a line contact seal member having an annular line contact close contact portion at its tip, and a contact wall surface portion for contacting the line contact close contact portion in a close contact state, the line contact close contact portion and the contact wall surface portion. Along with the contact wall surface portion by receiving a force in the direction in which the line contact contact portion intersects the contact direction while sealing by a close contact state with A pressure adjusting container for releasing pressure by forming a gap between the line contact close contact portion and the contact wall surface portion by sliding movement. 2. A container body is provided with a cap attached to the mouth portion thereof to seal the contents inside the container, wherein the cap is provided with the vent hole, the line contact seal member, and the contact wall surface portion. The pressure adjusting container according to claim 1. 3. The line contact sealing member receives pressure from the inside of the container or pressure from the outside air through the ventilation hole, and the line contact sealing portion is moved outward or along the contact wall surface portion. The pressure adjusting container according to claim 1, wherein the pressure adjusting container is slidable in only one of the inner sides. 4. The pressure adjusting container according to claim 2, wherein the line contact seal member or the contact wall surface portion is provided on a packing attached to an inner ceiling portion of the cap. 5. The inner ceiling surface and the packing are provided by projecting downward from the inner ceiling surface of the cap or projecting upward from the packing and contacting the upper surface of the packing or the inner ceiling surface of the cap. The pressure regulating container according to claim 4, further comprising a packing support rib that holds a space for a ventilation path between the pressure adjusting container and the rib. 6. A pressure adjusting valve, which is arranged inside a portion where a vent hole to the outside air is formed and adjusts the internal pressure of a container in which the contents are sealed, wherein an annular line contact contact portion is provided at the tip. And a contact wall surface portion that abuts the line contact adhesion portion in a close contact state. The inside of the container is sealed by the close contact state between the line contact close contact portion and the contact wall surface portion. From the air contact hole to the vent hole, and the line contact adhesion part receives a force in a direction intersecting the contact direction and slides along the contact wall surface part, whereby the line contact adhesion part A pressure regulating valve for releasing pressure by forming a gap between the contact wall surface portion and the contact wall surface portion.