GAS OUTLET CAP AND COSMETIC CONTAINER WITH IT

Description

BACKGROUND 1. Field

[0001] The present disclosure relates to a gas discharge cap and a cosmetic container including the gas discharge cap, and more particularly, to a gas discharge cap configured to discharge the gas generated inside the cosmetic container through a lower side surface of the cap while simultaneously preventing the contents contained inside the cosmetic container from leaking out, and a cosmetic container including the gas discharge cap.2. Description of the Related Art

[0002] In general, liquid contents, such as detergent, fuel oil, edible oil, and soy sauce are stored in a container having a storage space formed inside to store a certain amount of volume and a handle formed to facilitate injection and use of the contents, and the container are typically equipped with an inner stopper and a container cap to seal an inlet to prevent leakage of the contents.

[0003] However, when a sealed container is stored for a long time with contents stored inside, or when gas is generated inside the container due to the surrounding environment (for example, exposure to sunlight, high temperature, and so on), causing the container to swell due to pressure, and when the container stopper does not open properly or the stored contents are highly flammable liquids, explosion due to gas pressure may also occur frequently.

[0004] The problem of gas generation inside the container may occur in cosmetic containers that contain cosmetic contents therein, and particularly, the problem is more prominent in cosmetic containers that contain vitamin contents. In order to solve the problem of gas generation inside the cosmetic container, KR 2022 0144965 A discloses a technique in which the gas generated inside is discharged to the outside by using a packing member that expands according to the pressure of a space and seals or opens a lower ventilation hole, which has a problem in that not only an aesthetic sense of a cosmetic product deteriorates because holes are formed on a surface of an outer cap to allow gas to be discharged to an upper portion of the outer cap, but also the gas discharge efficiency is reduced due to a discharge manner through upward movement of the gas.

[0005] WO 02 / 053002 A1 relates to a gas exhaust device for food containers, which is adapted to allow gas generated from foods such as fermented foods and roasted coffee to be exhausted outside when an internal pressure in the food container is increased due to the gas generated from the foods. KR 2012 0002483 U relates to the cap structure of a rice wine container. KR 101 952 505 B1 discloses a container lid capable of automatically discharging fermentation gas generated from the contents stored in a container to the outside according to the compaction of the inside of the container, thereby maintaining the pressure inside the container at a predetermined level or less.

[0006] Therefore, in order to solve the problems and shortcomings of the gas discharge method of the existing cosmetic container, there is a growing need in the art for a new type of gas discharge cap that allows the gas generated inside a cosmetic container to be discharged through a lower side of a cap while simultaneously preventing the contents in the cosmetic container from leaking out, and for a cosmetic container including the gas discharge cap.SUMMARY

[0007] An objective of the present disclosure is to solve the above-described technical problem and provide a gas discharge cap that improves an aesthetic sense and gas discharge efficiency of cosmetic container products by excluding the existing method of forming a hole in an upper portion of an outer cap and discharging gas through the hole and allowing gas in a container to be discharged through a lower side surface of the outer cap, and to provide a cosmetic container including the gas discharge cap.

[0008] In addition, an objective of the present disclosure is to provide a gas discharge cap that prevents the contents in a container from leaking out by forming a sealing area through a contact-coupling between an inner cap and a check valve and additionally forming an auxiliary sealing area through a contact-coupling between the inner cap and an outer cap, and to provide a cosmetic container including the gas discharge cap.

[0009] In addition, an objective of the present disclosure is to provide a gas discharge cap that may secure the stability of pressure reduction leakage of a check valve by additionally providing a spring coupled with the check valve, and to provide a cosmetic container including the gas discharge cap.

[0010] In addition, an objective of the present disclosure is to provide a gas discharge cap that may more effectively prevent the contents in a container from leaking out by additionally providing a foam packing portion implemented with non-woven fabric in a space between upper portions of an inner cap and an outer cap, and to provide a cosmetic container including the gas discharge cap.

[0011] In addition, an objective of the present disclosure is to provide a gas discharge cap that may more effectively prevent the contents in a container from leaking out by forming an additional sealing area in a space between side surfaces of an inner cap and an outer cap, and to provide a cosmetic container including the gas discharge cap.

[0012] Technical problems of the present disclosure are not limited to the technical problems described above, and other technical problems not described above will be clearly understood by those skilled in the art from the descriptions below.

[0013] According to an embodiment of the present disclosure devised to solve the above-described technical problem, a gas discharge cap may include an inner cap configured to be coupled to a main body and having a partial region in which an inner cap opening is formed; an outer cap configured to cover an outer side of the inner cap; a check valve configured to be inserted into and coupled to the inner cap opening to seal or open the inner cap opening according to a pressure of the main body; and a foam packing portion disposed in a space between the inner cap and the outer cap, configured to prevent contents in the main body from leaking out.

[0014] In addition, the check valve may be made of a nitrile butadiene rubber (NBR) material.

[0015] In addition, when the pressure of the main body exceeds a preset threshold pressure, the check valve may be elastically deformed to open the inner cap opening, and a gas in the main body may be configured to be discharged downwardly from the outer cap along the opened inner cap opening and a space between the inner cap and the outer cap.

[0016] In addition, the check valve may be further configured to prevent contents in the main body from leaking out by a first sealing area and a second sealing area formed by a coupling to the inner cap.

[0017] In addition, the gas discharge cap may further include a spring having one end configured to be coupled to the outer cap and another end configured to be coupled to the check valve.

[0018] In addition, the spring may be configured to press the check valve toward the main body.

[0019] In addition, the gas discharge cap further includes a foam packing portion disposed in a space between the inner cap and the outer cap, configured to prevent contents in the main body from leaking out.

[0020] According to another embodiment of the present disclosure devised to solve the above-described technical problem, a cosmetic container may include the gas discharge cap; and a main body coupled to the gas discharge cap.

[0021] According to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, the conventional method of forming a hole in an upper portion of an outer cap to discharge gas through the hole is excluded, and the gas in the container is discharged through a lower side surface of the outer cap, and thus, an aesthetic sense and gas discharge efficiency of the cosmetic container may be improved.

[0022] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, a sealing area may be formed through a contact-coupling of an inner cap and a check valve, and an auxiliary sealing area may be additionally formed through the contact-coupling of the inner cap and an outer cap, thereby preventing the contents in the cosmetic container from leaking out.

[0023] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, a spring coupled to a check valve may be additionally provided, thereby increasing the stability of pressure reduction leakage of the check valve.

[0024] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, a foam packing portion made of non-woven fabric may be additionally provided in a space between upper portions of an inner cap and an outer cap, thereby more effectively preventing the contents in the cosmetic container from leaking out.

[0025] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, an additional sealing area may be formed in a space between side surfaces of an inner cap and an outer cap, thereby more effectively preventing the contents in the cosmetic container from leaking out.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more fully understand the drawings cited in the detailed description of the present disclosure, a brief description of each drawing is provided. FIG. 1A is a cross-sectional view of a gas discharge cap according to an embodiment of the present disclosure, FIG. 1B is a cross-sectional view of a gas discharge cap additionally including a spring and a foam packing portion in a configuration of FIG. 1A, and FIG. 1C is a detailed enlarged view of a check valve according to an embodiment of the present disclosure. The embodiment of FIG. 1A when provided with the foam packing portion is the embodiment of the invention. If an embodiment lacks any feature of claim 1, it is not according to the invention. FIG. 2 is an exemplary view illustrating a gas discharge mechanism according to an increase in pressure inside a cosmetic container according to an embodiment of the present disclosure. FIG. 3 is a cross-sectional view of a gas discharge cap according to another embodiment of the present disclosure. FIG. 4A to FIG. 4C are cross-sectional views of gas discharge caps illustrating various shapes of check valves according to embodiments of the present disclosure may have. FIG. 5 is a schematic cross-sectional view of a cosmetic container formed by coupling a gas discharge cap to a main body, according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] Hereinafter, embodiments according to the present disclosure will be described with reference to the attached drawings. It should be noted that, when adding reference signs to components in each drawing, the same components are given the same reference signs as much as possible even when the components are shown in different drawings. In addition, in describing embodiments of the present disclosure, when it is determined that a specific description of a related known configuration or function interferes with the understanding of embodiments of the present disclosure, the detailed descriptions thereof are omitted. In addition, although embodiments of the present disclosure are described below, the technical idea of the present disclosure is not limited or restricted thereto and may be modified and implemented in various ways by those skilled in the art.

[0028] Throughout the specification, when a portion is said to be "connected" to another portion, this includes not only a case where the portion is "directly connected" to another portion but also a case where the portion is "indirectly connected" to another portion with another component therebetween. Throughout the specification, when a portion is said to "include" a component, this does not exclude other components unless otherwise specifically stated, but means that other components may be included therein. In addition, when describing the components of the embodiment of the present disclosure, terms such as first, second, A, B, (a), (b), and so on may be used. The terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms.

[0029] FIG. 1A illustrates a cross-sectional view of a gas discharge cap 100 according to an embodiment of the present disclosure. The gas discharge cap 100 according to an embodiment of the present disclosure is configured to discharge gas generated inside a cosmetic container through a lower side surface of the gas discharge cap 100 while simultaneously preventing the contents inside the cosmetic container from leaking out, and a cross-sectional view of the gas discharge cap 100 is illustrated in FIG. 1A.

[0030] As illustrated in FIG. 1A, the gas discharge cap 100 according to an embodiment of the present disclosure may include an inner cap 110, an outer cap 120, a check valve 130, and so on. For reference, each component constituting the gas discharge cap 100 according to the present disclosure and a cosmetic container 1000 (see FIG. 5) including the gas discharge cap 100 may be made of lightweight materials, and accordingly, convenience of manufacturing, transporting, and use of the gas discharge cap 100 and the cosmetic container 1000 including the gas discharge cap 100 may be further increased, and each component constituting the gas discharge cap 100 will be described in more detail below.

[0031] The inner cap 110 may be configured such that a partial area of the inner cap 110 is coupled to a main body 200 (see FIG. 5). More specifically, the inner cap 110 according to the present disclosure may have a cylindrical shape, and accordingly, a cross-section thereof is configured to approximately a letter "", and for this purpose, the inner cap 110 may be composed of an inner cap main horizontal frame 111, an inner cap main vertical frame 112, an inner cap sub-vertical frame 113, and so on, and accordingly, the inner cap 110 may serve as an inner housing of the gas discharge cap 100 according to the present disclosure.

[0032] In addition, the inner cap 110 according to the present disclosure may be made of a plastic material, for example, polypropylene (PP), but PP is only one example of a material which is used to make the inner cap 110, and the material of the inner cap 110 is not limited to PP.

[0033] The inner cap main horizontal frame 111 may extend horizontally from the inside of the gas discharge cap 100 according to the present disclosure, that is, extend parallel to a bottom surface of the cosmetic container 1000 according to the present disclosure. More specifically, the inner cap main horizontal frame 111 according to the present disclosure may extend parallel or substantially parallel to an outer cap main horizontal frame 121 of the outer cap 120 with a shorter length than a length of the outer cap main horizontal frame 121 of the outer cap 120 in an inner space of the outer cap 120, and one end of the inner cap main horizontal frame 111 may be coupled to the inner cap main vertical frame 112, and an inner cap protrusion 111a and an inner cap opening 111b may be formed in at least part of the inner cap main horizontal frame 111.

[0034] The inner cap protrusion 111a may protrude in a partial area of the inner cap main horizontal frame 111 according to the present disclosure, and as illustrated, the inner cap protrusion 111a may protrude in a direction of the outer cap main horizontal frame 121 at a point spaced apart from the center of an upper surface of the inner cap main horizontal frame 111 by a predetermined interval, and the inner cap protrusion 111a may be contact-coupled to at least a partial area of the check valve 130, more specifically, to an arm 132 (see FIG. 1C) of the check valve 130, and accordingly, a sealing area, more specifically, a second sealing area 142 (see (a) of FIG. 2) may be formed.

[0035] In addition, the inner cap opening 111b may be formed in an approximately central area of the inner cap main horizontal frame 111 according to the present disclosure, and as illustrated, the check valve 130 according to the present disclosure may be inserted into and coupled to the inner cap opening 111b. The check valve 130 according to the present disclosure may seal or open the inner cap opening 111b according to the pressure of the main body 200, and in particular, when the pressure inside the main body 200 exceeds a preset threshold pressure, the inner cap opening 111b is opened due to deformation of the check valve 130, and accordingly, a path through which the gas inside the main body 200 is discharged to the outside may be formed, which will be described in more detail with reference to FIG. 2 below.

[0036] The inner cap main vertical frame 112 may extend vertically from the inside of the gas discharge cap 100 according to the present disclosure, that is, extend parallel to a side surface of the cosmetic container 1000 according to the present disclosure. More specifically, the inner cap main vertical frame 112 according to the present disclosure may extend parallel or substantially parallel to the outer cap main vertical frame 122 with a shorter length than a length of the outer cap main vertical frame 122 of the outer cap 120 in an internal space of the outer cap 120, and one end thereof may be coupled to the inner cap main horizontal frame 111.

[0037] In addition, upper and lower spaces between the inner cap 110 and the outer cap 120 may be defined by a difference between a length of the inner cap main vertical frame 112 and the length of the outer cap main vertical frame 122, and the inner cap sub-vertical frame 113, an outer cap sub-vertical frame 213, the upper area of the check valve 130, and so on may be disposed in the upper and lower spaces between the inner cap 110 and the outer cap 120, and additionally, a spring 140 (see FIG. 1B) may be provided, and a foam packing portion 10 is provided (see FIG. 1B).

[0038] The inner cap sub-vertical frame 113 may be formed vertically with the inner cap main horizontal frame 111 at a predetermined distance from a partial area of the inner cap main horizontal frame 111, for example, the center of the inner cap main horizontal frame 111. A width of the inner cap sub-vertical frame 113 may be greater than a horizontal length of the check valve 130, and accordingly, the check valve 130 may be more stably accommodated in an upper space of the inner cap 110 formed by the inner cap sub-vertical frame 113.

[0039] In addition, a height of the inner cap sub-vertical frame 113 may substantially correspond to a distance between the inner cap 110 and the outer cap 120, and accordingly, an exposed end of the inner cap sub-vertical frame 113 may be contact-coupled to a lower surface of the outer cap 120, more specifically, the outer cap main horizontal frame 121, and an additional (or auxiliary) sealing area, for example, a third sealing area 143 (see (a) of FIG. 2), may be formed by the contact-coupling of the inner cap sub-vertical frame 113 to the outer cap main horizontal frame 121, particularly, the outer cap protrusion 121a. A formation and function of the sealing area will be described in more detail with reference to FIG. 2 below.

[0040] The outer cap 120 may cover an outer side of the inner cap 110. More specifically, the outer cap 120 according to the present disclosure may have a cylindrical shape and have a cross-section of approximately a letter "" and include the outer cap main horizontal frame 121, the outer cap main vertical frame 122, an outer cap sub-vertical frame 123, and so on, and accordingly, the outer cap 120 may be configured to form an exterior of the gas discharge cap 100 according to the present disclosure while preventing internal components from being detached.

[0041] In addition, the outer cap 120 according to the present disclosure may also be made of a plastic material, for example, PP, but, like the inner cap 110 described above, PP is an example of a material which the outer cap 120 may be made of, and the material of the outer cap 120 is not limited to PP.

[0042] The outer cap main horizontal frame 121 may extend horizontally from the outside of the gas discharge cap 100 according to the present disclosure, that is, extend parallel to a bottom surface of the cosmetic container 1000 according to the present disclosure. More specifically, the outer cap main horizontal frame 121 according to the present disclosure may extend parallel or substantially parallel to the inner cap main horizontal frame 111 at the outermost side of the gas discharge cap 100 with a greeter length than the inner cap main horizontal frame 111 of the inner cap 110, and one end of the outer cap main horizontal frame 121 may be coupled to the outer cap main vertical frame 122, and an outer cap protrusion 121a may be formed in at least a partial area of the outer cap main horizontal frame 121.

[0043] The outer cap protrusion 121a may be formed in a partial area of the outer cap main horizontal frame 121 according to the present disclosure, and as illustrated, the outer cap protrusion 121a may protrude toward the inner cap main horizontal frame 111 at a point spaced apart from the center of a bottom surface of the outer cap main horizontal frame 121 by a predetermined interval, and as the outer cap protrusion 121a is contact-coupled to an exposed end of the inner cap sub-vertical frame 113, an auxiliary sealing area, more specifically, a third sealing area 143 (see (a) of FIG. 2) may be formed.

[0044] As illustrated, the outer cap protrusion 121a according to the present disclosure may be formed at a distance further from the center of the gas discharge cap 100 than the inner cap protrusion 111a, and an outer side of the outer cap protrusion 121a is coupled to the inner cap sub-vertical frame 113, thereby implementing an auxiliary (or additional) third sealing area 143, compared to the first sealing area 141 (see (a) of FIG. 2) and a second sealing area 142 (see (a) of FIG. 2), and accordingly, the contents in the main body 200 may be more reliably prevented from leaking out.

[0045] An outer cap main vertical frame 122 may extend vertically from the outside of the gas discharge cap 100 according to the present disclosure, that is, extend parallel to a side surface of the cosmetic container 1000 according to the present disclosure. More specifically, the outer cap main vertical frame 122 according to the present disclosure may extend parallel or substantially parallel to the inner cap main vertical frame 112 at the outermost side of the gas discharge cap 100 with a greater length than the inner cap main vertical frame 112 of the inner cap 110, and one end of the outer cap main vertical frame 122 may be coupled to the outer cap main horizontal frame 121.

[0046] In addition, upper and lower spaces between the inner cap 110 and the outer cap 120 may be defined by a difference in length between the inner cap main vertical frame 112 and the outer cap main vertical frame 122, and the inner cap sub-vertical frame 113, the outer cap sub-vertical frame 213, an upper area of the check valve 130, and so on may be disposed in the upper and lower spaces between the inner cap 110 and the outer cap 120, and additionally, the spring 150 and the foam packing portion 160 may also be provided therein as described above.

[0047] The outer cap sub-vertical frame 123 may be vertical to the outer cap main horizontal frame 121 by being spaced apart from a partial area of the outer cap main horizontal frame 121, for example, from the center of the outer cap main horizontal frame 121 by a predetermined distance. A width of the outer cap sub-vertical frame 123 may be greater than a horizontal length of the check valve 130 and be less than a head 131 (see FIG. 1C) of the check valve 130, and accordingly, the head 131 of the check valve 130 may be stably disposed in a space formed by the outer cap sub-vertical frame 123 without or with coupling to the spring 150 as illustrated.

[0048] In addition, a height of the outer cap sub-vertical frame 123 may be less than a height of the inner cap sub-vertical frame 113, and for example, the height of the outer cap sub-vertical frame 123 may be less than a length obtained by subtracting a thickness of the arm 132 of the check valve 130 from a distance between the inner cap 110 and the outer cap 120, and accordingly, as the gas pressure of the main body 200 increases, a space may be secured in advance to enable the check valve 130 to move (for example, slidably move or so on) upward (for example, see (b) of FIG. 2) when the check valve 130 deforms. This is described below in more detail with reference to FIG. 2

[0049] As illustrated, an exposed end of the outer cap sub-vertical frame 123 may be rounded toward the head 131 of the check valve 130, and when the outer cap sub-vertical frame 123 collides with the head 131 of the check valve 130 and / or the spring 150 through the rounded shape of the exposed end of the outer cap sub-vertical frame 123, structural stability may be guaranteed to the maximum extent.

[0050] The check valve 130 may be inserted into and coupled to the inner cap opening 111b formed in the inner cap 110 to seal or open the inner cap opening 111b according to the pressure of the main body 200. More specifically, when the pressure in the main body 200 of the cosmetic container 1000 filled with contents exceeds a preset threshold pressure due to gas generation inside the main body 200, the check valve 130 according to one embodiment of the present disclosure is deformed, preferably elastically deformed, and accordingly, the inner cap opening 111b is opened, and thereby, the gas in the main body 200 may be discharged downwardly through the opened inner cap opening 111b and along a space between the inner cap 110 and the outer cap 120.

[0051] To this end, the check valve 130 according to one embodiment of the present disclosure may be made of a nitrile butadiene rubber (NBR) material to have a predetermined elasticity, and accordingly, the check valve 130 may be deformed, that is, elastically deformed in response to increasing gas pressure within the main body 200. For example, the check valve 130 according to the present disclosure may be formed of an elastic material that is deformed in shape by an external force, stores a recovery force, and is deformed in shape by the stored recovery force.

[0052] As described below again with reference to FIG. 2, when the pressure in the main body 200 is low, for example, when the pressure in the main body 200 is below a preset threshold pressure, the check valve 130 according to an embodiment of the present disclosure may be completely inserted into and coupled to the inner cap opening 111b to seal the inner cap opening 111b, and when the amount of gas in the main body 200 increases and the gas pressure in the main body 200 exceeds the preset threshold pressure, a gas discharge path is formed through a first operation (for example, see (b) of FIG. 2) and a second operation (for example, see (c) of FIG. 2) of the check valve 130, and the gas in the main body 200 is discharged to the outside, more specifically, toward a lower side surface of the outer cap 120, along the gas discharge path, and thus, a problem of high-pressure gas in the container is solved.

[0053] A detailed enlarged view of the check valve 130 is illustrated in FIG. 1C by way of example. As illustrated in FIG. 1C, the check valve 130 may include the head 131, the arm 132, a waist 133, a leg 134, and so on.

[0054] The head 131 of the check valve 130 may define a head area of the check valve 130. As illustrated, the head 131 may be disposed in a space between the outer cap sub-vertical frames 123, and an exposed end of the head 131 may be spaced apart from a bottom surface of the outer cap main horizontal frame 121 by a predetermined distance, and the other end of the head 131 may be integrally coupled to the arm 132 and the waist 133.

[0055] In addition, as shown, the head 131 of the check valve 130 according to the present disclosure may have an opening formed at its center, and its outer side may be configured to contact the inner surface of the outer cap sub-vertical frame 123, and accordingly, the upper outer surface of the head 131 may be inclined to correspond to the shape of the lower inner surface of the outer cap sub-vertical frame 123.

[0056] In a normal state, for example, when the pressure inside the main body 200 is less than a preset threshold pressure, the head 131 of the check valve 130 according to the present disclosure may strengthen the sealing capability of the container by being in contact and coupled with the outer cap sub-vertical frame 123, and when the pressure inside the main body 200 increases, necessitating the external discharge of gas due to the opening of the check valve 130, the check valve 130 may operate through elastic deformation, as it is made of NBR material.

[0057] Therefore, as shown in FIG. 1A, in the configuration of the gas discharge cap 100 without the spring 150, the head 131 of the check valve 130 is implemented in a shape that allows it to contact and couple with the outer cap sub-vertical frame 123, enabling the check valve 130 to open and close solely through its own elasticity under high gas pressure. However, if the gas discharge cap 100 is configured to include the spring 150, the elasticity of the spring 150 assists in the operation (or opening and closing) of the check valve 130, and in this case, as shown in FIG. 1B, the head 131 of the check valve 130 may be implemented as an integrated structure without contact coupling with the outer cap sub-vertical frame 123.

[0058] That is, the spring 150 may be optionally coupled to the check valve 130 according to the present disclosure, and when the spring 150 is coupled to the check valve 130, one end of the spring 150 is coupled to the check valve 130 around the head 131, and accordingly, the coupling stability may be further improved.

[0059] The arm 132 of the check valve 130 may define an arm area of the check valve 130. As illustrated, the arm 132 may extend in a circumferential direction by a predetermined distance from the head 131, and a width of the arm 132 may be less than a distance between the inner cap sub-vertical frames 113.

[0060] In addition, a bottom surface of the arm 132 may be contact-coupled to the inner cap main horizontal frame 111, and as illustrated, the bottom surface of the arm 132 may additionally have an arm recess 132a having a sunken portion. An outer area of the bottom surface of the arm 132 in which the arm recess 132a is not formed may be contact-coupled to the inner cap protrusion 111a to form the second sealing area 142, and an inner area of the bottom surface of the arm 132 in which the arm recess 132a is not formed may be contact-coupled to the inner cap opening 111b, and more specifically, an upper area of the inner cap main horizontal frame 111 connected to the inner cap opening 111b to form the first sealing area 141 (see (a) of FIG. 2). In this way, by additionally forming the arm recess 132a in the bottom surface of the arm 132 constituting the check valve 130 according to the present disclosure, a gas discharge path may be formed more reliably, and also, a sealing area for preventing external leakage of the contents may be formed more easily.

[0061] The waist 133 of the check valve 130 may define a waist area of the check valve 130. That is, by inserting and coupling the waist 133 to the inner cap opening 111b, the inner cap opening 111b may be sealed by the check valve 130. As illustrated in the drawings, the head 131 and the arm 132 may be coupled to one side of the waist 133, the leg 134 may be coupled to the other side of the waist 133, and a thickness of the waist 133 may be substantially equal to a thickness of the inner cap opening 111b and may be greater than a thickness of the head 131 (for example, when the spring 150 is provided, see FIG. 1B) or less than the thickness of the head 131 (for example, when the spring 150 is not provided, see FIG. 1A).

[0062] The leg 134 of the check valve 130 may define a leg area of the check valve 130. More specifically, when the check valve 130 according to the present disclosure is inserted into and coupled to the inner cap opening 111b, the leg 134 may be disposed in an internal space of the inner cap 110, wherein the leg 134 having a width greater than a size of the inner cap opening 111b may be inserted through the inner cap opening 111b to be disposed in an inner space of the inner cap 110 because the leg 134 is made of an elastic material such as NBR.

[0063] In addition, as illustrated in the drawings, one end of the leg 134 is coupled to the waste 133, and the leg opening 134a may be additionally formed at the other end of the leg 134. The check valve 130 according to the present disclosure is configured to discharge gas in the main body 200 to the outside by being deformed due to an increase in pressure in the main body 200 to open the inner cap opening 111b, and in order to more clearly and reliably deform the check valve 130 due to an increase in pressure, the leg opening 134a may be formed at the other end of the leg 134. A space, in which the leg 134 and the waist 133 may be deformed due to the pressure in the main body 200, may be secured by the formed leg opening 134a, and accordingly, a gas discharge path may be more clearly formed.

[0064] In this regard, a configuration in which the leg opening 134a is formed on a lower surface of the leg 134 corresponds to an example of a configuration of the leg 134 for easy understanding of the present disclosure, and therefore, according to another embodiment of the present disclosure, the leg 134 may be formed as an integral body without the leg opening 134a.

[0065] For reference, a shape of the check valve 130 including the head 131, the arm 132, the waist 133, the leg 134, and so on as illustrated in FIG. 1A to FIG. 1C is merely an example for easy understanding of the present disclosure, and the check valve 130 according to the present disclosure may include any check valve of any shape that is deformed (for example, elongated) to open the inner cap opening 111b as the pressure in the main body 200 increases, and various shapes of the check valve 130 are described below in more detail with reference to FIG. 4A to FIG. 4C.

[0066] Based on the gas discharge cap 100 illustrated in FIG. 1A, when the pressure of gas in the main body 200 exceeds a preset value, the gas in the main body 200 may be discharged to the outside through a gas discharge path formed by the upward movement and deformation of the check valve 130 and deformations of the inner cap 110 and the outer cap 120. However, in order to more reliably seal and open the inner cap opening 111b by the check valve 130 and to more reliably prevent the contents, for example, the contents of cosmetics, from leaking out through the formed gas discharge path, the spring 150 and the foam packing portion 160 may be additionally utilized, and a cross-sectional view of the gas discharge cap 100 additionally including the spring 150 and the foam packing portion 160 in the configuration of FIG. 1A is exemplarily illustrated in FIG. 1B.

[0067] First, the spring 150 according to the present disclosure may have one end coupled to the outer cap 120 and the other end coupled to the check valve 130. More specifically, as illustrated in the drawings, the spring 150 according to the present disclosure may have one end capable of being coupled to an area of the outer cap main horizontal frame 121 corresponding to a space between the outer cap sub-vertical frames 123 and have the other end capable of being coupled to an upper area of the arm 132 of the check valve 130 through the head 131 of the check valve 130.

[0068] Here, the spring 150 may pressurize the check valve 130 toward the main body 200 (that is, downward in FIG. 1B), and accordingly, when the pressure of gas in the main body 200 is low (that is, when the pressure in the main body 200 is below a preset threshold pressure), the spring 150 may be utilized to further strengthen the sealing of the check valve 130 with respect to the inner cap opening 111b, and thus, the pressure-reducing leakage stability of the main body 200 may be further improved.

[0069] In addition, the spring 150 according to the present disclosure may be made of a metal or plastic material with elasticity, and for example, the spring 150 may be made of a SUS material.

[0070] In addition, as illustrated in FIG. 1B, the foam packing portion 160 may be additionally provided in a space between the inner cap 110 and the outer cap 120, more specifically, in an upper space between the inner cap 110 and the outer cap 120 to prevent the contents (for example, cosmetic contents or so on) in the main body 200 from leaking out.

[0071] The foam packing portion 160 according to the present disclosure may be made of a plastic material, for example, polyethylene (PE), and for example, the foam packing portion 160 according to the present disclosure may be made of a non-woven fabric. When the check valve 130 is opened according to an increasing pressure of gas in the main body 200 and a gas discharge path is formed, the contents may escape together with the gas along the formed gas discharge path, and when the contents leak together along a lower side surface of the outer cap 120, there is a problem that the leakage causes considerable inconvenience to consumers who use the product, especially cosmetic products.

[0072] In order to solve this problem, that is, to prevent the contents in the main body 200 from leaking out, the foam packing portion 160 that may be made of non-woven fabric may be provided in a space between the inner cap 110 and the outer cap 120, and more specifically, the foam packing portion 160 is disposed in a space between the inner cap sub-vertical frame 113 of the inner cap 110 and the outer cap main vertical frame 122 of the outer cap 120, and accordingly, the non-woven fabric absorbs the contents to fundamentally prevent the contents from leaking out of the gas discharge cap 100.

[0073] For reference, according to another embodiment of the present disclosure, a Gore-Tex layer (not illustrated) may be additionally provided adjacent to the foam packing portion 160 that may be made of non-woven fabric, and accordingly, it is possible to more reliably prevent the contents from leaking out.

[0074] As described above, the spring 150 and the foam packing portion 160 illustrated in FIG. 1B are optional components, and accordingly, as illustrated in FIG. 1A, the gas discharge cap 100 according to the present disclosure may be implemented without the spring 150 and the foam packing portion 160, or the gas discharge cap 100 according to the present disclosure may be implemented by additionally providing either one of the spring 150 and the foam packing portion 160, or the gas discharge cap 100 according to the present disclosure may be implemented by additionally providing both the spring 150 and the foam packing portion 160.

[0075] The gas discharge cap 100 described in FIG. 1A and FIG. 1B may be utilized to discharge the gas in a container to the outside while preventing the contents from leaking out, and an example view illustrating a gas discharge mechanism due to an increase in pressure inside a cosmetic container is illustrated in FIG. 2 according to an embodiment of the present disclosure.

[0076] First, (a) of FIG. 2 illustrates a state in which the inner cap opening 111b of the inner cap 110 is not yet opened by the check valve 130, that is, sealed as an initial state. As illustrated in FIG. 2, the check valve 130 is inserted into and coupled to the inner cap opening 111b, and the pressure of gas in the main body 200 is low, for example, below a preset threshold pressure, and thereby, the check valve 130 is not yet deformed and may completely seal the inner cap opening 111b.

[0077] Here, as illustrated in FIG. 2, a sealing portion 140 may be formed by contact between various elements constituting the gas discharge cap 100, and more specifically, the sealing portion 140 may include the first sealing area 141 formed by contact-coupling an inner step difference of the arm 132 of the check valve 130 to an entry vertical surface of the inner cap opening 111b, the second sealing area 142 formed by contact-coupling the inner cap protrusion 111a to an outer side surface of the arm 132 of the check valve 130, and the third sealing area 143 formed by contact-coupling the inner cap sub-vertical frame 113 to the outer cap protrusion 121a.

[0078] Here, the third sealing area 143 formed by contact-coupling the inner cap sub-vertical frame 113 to the outer cap protrusion 121a may function as an auxiliary sealing member, and accordingly, when the contents in the main body 200 are effectively prevented from leaking out through the first sealing area 141 and the second sealing area 142 that first come into contact with the contents, the third sealing area 143 may not be utilized, that is, when the contents pass through the first sealing area 141 and the second sealing area 142 because the pressure in the main body 200 is high, the third sealing area 143 may be configured to externally or additionally prevent the contents from leaking out.

[0079] In addition, although FIG. 1A to FIG. 2 exemplarily illustrate a configuration in which the inner cap sub-vertical frame 113 is spaced apart from the arm 132 of the check valve 130, a length of the arm 132 may be further increased, and an exposed end of the arm 132 may be contact-coupled to a partial area of the inner cap sub-vertical frame 113 to form an additional sealing area, according to another embodiment of the present disclosure.

[0080] In this way, the contents in the main body 200 may be effectively prevented from leaking out through the sealing portion 140 including the first sealing area 141, the second sealing area 142, the third sealing area 143, and the additional sealing area. For reference, the leakage of the contents in the main body 200 may be prevented by the foam packing portion 160, and also by an additional sealing area formed in a space between side surfaces of the inner cap 110 and the outer cap 120, and the additional sealing area is described below in more detail with reference to FIG. 3.

[0081] For reference, (a) of FIG. 2 illustrates a configuration in which the outer cap protrusion 121a is disposed on the inner side of the inner cap sub-vertical frame 113 to form the third sealing area 143, and according to another embodiment of the present disclosure, the outer cap protrusion 121a formed on at least a partial region of a lower surface of the outer cap main horizontal frame 121 may be disposed on an outer side of the inner cap sub-vertical frame 113 to also form the third sealing area 143.

[0082] In addition, although it is illustrated that cross sections of the inner cap protrusion 111a and the outer cap protrusion 121a protruding from surfaces of the inner cap 110 and the outer cap 120 have a semicircular shape to form a sealing area, it will also be apparent that, according to an additional embodiment of the present disclosure, the inner cap protrusion 111a and the outer cap protrusion 121a may have other shapes, such as circles or squares to implement a sealing effect by being in contact with other elements.

[0083] In addition, the inner cap sub-vertical frame 113 according to the present disclosure may have a thickness that is constant from the bottom to the top or may have a thickness that is decreased from the bottom to the top, and in particular, when the inner cap sub-vertical frame 113 has a trapezoidal cross-section, a lower surface thereof coupled to the inner cap main horizontal frame 111 has a greater width than a width of an upper surface thereof in contact with the outer cap main horizontal frame 121, and accordingly, the support and coupling stability of the inner cap sub-vertical frame 113 may be further improved.

[0084] In addition, as illustrated in (a) of FIG. 2, the spring 150 may be additionally coupled between the outer cap main horizontal frame 121 and the check valve 130 to press the check valve 130 toward the main body 200, that is, downward in the drawing, and accordingly, the leakage stability of the check valve 130 in a non-open state (that is, a sealing state) of the inner cap opening 111b due to a relatively low pressure may be more clearly secured.

[0085] In a state of (a) of FIG. 2, when the contents, for example, the contents including vitamin, are stored in the main body 200 and a sealed container is stored for a long time or gas is generated inside the container due to the surrounding environment (sun exposure, high temperature, or so on), a problem may arise that the container expands due to the gas pressure, and accordingly, in order to solve the problem of gas pressure increase and container expansion, the inner cap opening 111b may be opened by an operation of the check valve 130.

[0086] More specifically, (b) of FIG. 2 may correspond to a first operation in which the check valve 130 is first deformed as the pressure of gas in the main body 200 increases. As described above, the check valve 130 is slightly raised upward due to the increasing pressure in the main body 200, and as the check valve 130 moves upward, a contact between a bottom surface of the arm 132 of the check valve 130 and a top surface of the inner cap main horizontal frame 111 may be released.

[0087] However, in the first operation of (b) of FIG. 2, because the pressure of gas in the main body 200 does not yet reach a preset threshold pressure, a gas discharge path is not formed, and as illustrated in (b) of FIG. 2, the first sealing area 141, the second sealing area 142, and the third sealing area 143 are not opened, and accordingly, the gas is not discharged to the outside.

[0088] In the first operation, when the pressure of gas in the main body 200 increases further, that is, when the pressure of gas in the main body 200 exceeds a preset threshold pressure, the check valve 130 is secondarily deformed, and a gas discharge path is formed as a second operation as illustrated in (c) of FIG. 2. When the pressure of gas in the main body 200 further increases, the check valve 130 is deformed, and a thickness of the waist 133 of the check valve 130 is decreased, or a circular shape of the waist 133 changes to an oval shape or so on, and accordingly, a gas discharge path is formed in the inner cap opening 111b (that is, the first sealing area 141 is released), and then, the arm 132 of the check valve 130 is deformed due to the discharge of gas to release the contact-coupling between a bottom surface of the arm 132 and the inner cap protrusion 111a is released (that is, the second sealing area 142 is released), and then, the inner cap sub-vertical frame 113 and the outer cap protrusion 121a, which may be made of PP, also deformed due to the discharge of gas and the high-pressure of gas to release the contact-coupling between the inner cap sub-vertical frame 113 and the outer cap protrusion 121a (that is, the third sealing area 143 may be released such that a slight gap may be generated).

[0089] Then, the gas in the main body 200 may be discharged to a lower side surface of the outer cap 120 (without forming a hole in an upper surface of the outer cap 120 to discharge the gas to an upper surface of the outer cap 120) to relieve the high pressure in the main body 200 as illustrated in (d) of FIG. 2 showing a gas discharge operation, and here, the foam packing portion 160 is additionally provided in upper and lower spaces of the inner cap 110 and the outer cap 120, and thus, contents may also be effectively prevented from being leaking out.

[0090] When the pressure of gas in the main body 200 decreases again due to the external discharge of the gas in the main body 200, the check valve 130 according to the present disclosure returns to an original position (that is, moves downward) and the deformations of the check valve 130, the inner cap 110, and the outer cap 120 caused by the high pressure may be released, and accordingly, the check valve 130 may then return to an initial state, that is, a sealing state of the inner cap opening 111b as illustrated in (a) of FIG. 2.

[0091] In the state of (a) of FIG. 2, when the pressure of gas in the main body 200 increases again, the gas may be effectively discharged to the outside through the state changes of (b), (c), and (d) of FIG. 2, and accordingly, a predetermined procedure illustrated in FIG. 2 may be repeated according to the increase and decrease of the pressure of gas in the main body 200.

[0092] FIG. 2 illustrates and subdivides the first operation step of (b), the second operation step of (c), and the gas discharge step of (d) for the sake of convenience of description, but in reality, as the pressure of gas in the main body 200 increases and exceeds the preset threshold pressure, upward movement and deformation of the check valve 130, opening of the inner cap opening 111b according thereto, and discharging of gas may occur sequentially and almost simultaneously (similarly, downward movement and recovery of the check valve 130 due to a decrease in pressure, and sealing of the inner cap opening 111b according thereto may also occur sequentially and almost simultaneously).

[0093] In this regard, although not illustrated in FIG. 2, according to an additional embodiment of the present disclosure, a sensor (not illustrated) configured to detect gas in at least a partial region of a lower side surface of the outer cap 120 may be further provided, and when gas discharge to the outside is detected by the sensor, the gas discharge cap 100 according to the present disclosure may be configured to output the detection of gas discharge in the form of a sound, and accordingly, a user may immediately recognize the gas discharge.

[0094] FIG. 3 is a cross-sectional view of a gas discharge cap 100 according to an additional embodiment of the present disclosure.

[0095] FIG. 2 illustrates the first sealing area 141, the second sealing area 142, and the third sealing area 143 for preventing the contents in the main body 200 from leaking out, and according to an additional embodiment of the present disclosure, a fourth sealing area 144 may be additionally provided in a space between a side surface of the inner cap 110 and the outer cap 120.

[0096] In the same manner as the third sealing area 143 described above, the fourth sealing area 144 additionally provided may be an auxiliar area to finally prevent the contents from leaking out, when the contents leak out through the first to third sealing areas 141, 142, and 143 and the foam packing portion 160 due to the high pressure of gas in the main body 200. Similarly to the inner cap protrusion 111a, the outer cap protrusion 121a, and so on, the fourth sealing area 144 according to the present disclosure may have a protruding shape such as a semicircle or a circle, and the fourth sealing area 144 may be disposed in a lower area (that is, adjacent to a final air discharge hole) of a space between side surfaces of the inner cap 110 and the outer cap 120, and accordingly, the fourth sealing area 144 additionally provided may more reliably prevent the contents from leaking out of the main body 200.

[0097] FIG. 4A to FIG. 4C are cross-sectional views of gas discharge caps 100 for describing various shapes of check valves 130', 130", and 130‴ according to embodiments of the present disclosure.

[0098] Although FIG. 1 to FIG. 3 illustrate configurations of check valve 130 including the head 131, the arm 132, the waist 133, the leg 134, and so on, the check valve 130 may have any shape that may be configured to seal or open the inner cap opening 111b by being deformed according to the internal gas pressure of the main body 200, and various shapes of the check valves 130', 130", and 130‴ that the check valve 130 may have are illustrated in FIG. 4A to FIG. 4C.

[0099] FIG. 4A illustrates the utilization of the check valve 130' having a plug shape. For example, the check valve 130' may be made of a silicone material, and as illustrated in FIG. 4A, the inner cap opening 111b is sealed by the check valve 130' having the plug shape in a normal time, and when the pressure of gas increases, the check valve 130' made of a silicone material is lifted to make a free space, and the high-pressure gas in the main body 200 is discharged through the free space, and may finally be discharged through a lower side surface of the outer cap 120.

[0100] FIG. 4B illustrates the utilization of the check valve 130" having another plug shape. For example, the check valve 130" may be made of a plastic material, and as illustrated in FIG. 4B, the inner cap opening 111b is sealed by the check valve 130" in a normal time, and when the pressure of gas increases, the check valve 130" is lifted to form a free space, and the high-pressure gas in the main body 200 may be discharged through the free space and be finally discharged through a lower side surface of the outer cap 120. For reference, although not illustrated in FIG. 4B, the spring 150 may be coupled to the check valve 130", and an upward movement of the check valve 130" may be partially assisted by the spring 150.

[0101] FIG. 4C illustrates the utilization of the check valve 130‴ having another plug shape. For example, the check valve 130‴ may be made of a plastic material, and as illustrated in FIG. 4C, the inner cap opening 111b is sealed by the check valve 130‴ in a normal time, and when the pressure of gas increases, a gap is generated between the check valve 130‴ and the inner cap opening 111b, and the high-pressure gas in the main body 200 is discharged through the gap and may be finally discharged through a lower side surface of the outer cap 120.

[0102] In addition, although not illustrated in FIG. 4A to FIG. 4C, the check valve 130 according to an additional embodiment of the present disclosure may be made as (i) a rubber dropper of a Javara type, or (ii) a bead-shaped plug.

[0103] FIG. 5 is a schematic cross-sectional view of a cosmetic container 1000 formed by coupling the gas discharge cap 100 according to an embodiment of the present disclosure to the main body 200.

[0104] As illustrated in FIG. 5, the cosmetic container 1000 according to an embodiment of the present disclosure may include a main body 200 that contains contents, and a gas discharge cap 100 that is coupled to the main body 200 to cover an opening of the main body 200 while simultaneously discharging internal gas of the main body 200 to the outside. For example, the main body 200 may have an upper opening, and the gas discharge cap 100 may be screw-coupled to an upper opening of the main body 200.

[0105] The main body 200 may extend in a vertical direction and have a cylindrical shape, and contain contents, for example, cosmetic contents, in an internal space thereof.

[0106] By coupling the gas discharge cap 100 according to the present disclosure to the main body 200, an internal gas of the main body 200 may be discharged to a lower side surface of the outer cap 120 without any container expansion problem (and resulting explosion accident) due to an increase in gas pressure in the main body 200, and the contents in the main body 200 may also be effectively prevented from being leaking out.

[0107] Although the present specification describes the cosmetic container 1000 as an example of a container in which gas may be generated in the main body 200 for reference, the gas discharge cap 100 according to the present disclosure may also be coupled to any container in which gas may be generated due to the contents contained therein, such as a beverage container, a detergent container, a syrup container, an oil container, a soy sauce container, or so on.

[0108] As described above, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, the conventional method of forming a hole in an upper portion of an outer cap to discharge gas through the hole is excluded, and the gas in the container is discharged through a lower side surface of the outer cap, and thus, an aesthetic sense and gas discharge efficiency of the cosmetic container may be improved.

[0109] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, a sealing area may be formed through a contact-coupling of an inner cap and a check valve, and an auxiliary sealing area may be additionally formed through the contact-coupling of the inner cap and an outer cap, and thus, it is possible to prevent the contents in the cosmetic container from leaking out.

[0110] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, a spring coupled to a check valve is additionally provided, and thus, the stability of pressure reduction leakage of the check valve may be increased.

[0111] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, a foam packing portion made of non-woven fabric is additionally provided in a space between upper portions of an inner cap and an outer cap, and thus, it is possible to more effectively prevent the contents in the cosmetic container from leaking out.

[0112] In addition, according to a gas discharge cap according to an embodiment of the present disclosure and a cosmetic container including the gas discharge cap, an additional sealing area is formed in a space between side surfaces of an inner cap and an outer cap, and thus, it is possible to more effectively prevent the contents in the cosmetic container from leaking out.

[0113] As described above, the best embodiments are disclosed in the drawings and specifications. Although specific terms are used herein, the specific terms are used only for the purpose of describing the present disclosure and do not limit the meaning or scope of the present disclosure as defined by the appended claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments may be derived therefrom. Therefore, the true technical protection scope of the present disclosure should be determined by the technical idea of the present disclosure as defined by the appended claims.

Claims

1. A gas discharge cap (100) comprising: an inner cap (110) configured to be coupled to a main body (200) and having a partial region in which an inner cap opening (111b) is formed; an outer cap (120) configured to cover an outer side of the inner cap (110); a check valve (130) inserted into and coupled to the inner cap opening (111b) being configured to seal or open the inner cap opening (111b) according to a pressure of the main body (200); characterized in that the gas discharge cap further comprises a foam packing portion (160) disposed in a space between the inner cap (110) and the outer cap (120), configured to prevent contents in the main body (200) from leaking out.

2. The gas discharge cap (100) of claim 1, wherein the check valve (130) is made of a nitrile butadiene rubber, NBR, material.

3. The gas discharge cap (100) of claim 2, wherein, when the pressure inside the main body (200) exceeds a preset threshold pressure, the check valve (130) is configured to be elastically deformed to open the inner cap opening (111b), and a gas in the main body (200) is configured to be discharged downwardly from the outer cap (120) along the opened inner cap opening (111b) and a space between the inner cap (110) and the outer cap (120).

4. The gas discharge cap (100) of claim 3, wherein the check valve (130) is further configured to prevent contents in the main body (200) from leaking out by a first sealing area (141) and a second sealing area (142) formed by a coupling to the inner cap (110).

5. The gas discharge cap (100) of claim 1, further comprising: a spring (150) having one end configured to be coupled to the outer cap (120) and another end configured to be coupled to the check valve (130).

6. The gas discharge cap (100) of claim 5, wherein the spring (150) is configured to press the check valve (130) toward the main body (200).

7. A cosmetic container (1000) comprising: the gas discharge cap (100) according to any one of the preceding claims; and a main body (200) coupled to the gas discharge cap (100).