Container cap structure

Abstract

The present invention relates to a container cap structure comprising: an inner cap for blocking an inlet of a container; and an outer cap, which is fastened to the inlet of the container and accommodates the inner cap, wherein the inner cap includes: a head to be inserted into the inlet of the container; a flange, which is integrally formed at an upper portion of the head so as to come into contact with an upper end of the inlet of the container along the circumference thereof; and a grip integrally formed at the upper portion of the flange, and thus, through a double cap structure, liquid contents in the container can be prevented from leaking and sealing force can be ensured even after several uses.

Description

Container cap structure

[0001] The present invention relates to a cap structure for a container, and more specifically, to a cap structure for a container comprising an inner cap that blocks the opening of a container and an outer cap that accommodates the inner cap and is coupled to the opening of the container, wherein the opening of the container is sealed primarily using the inner cap and the opening of the container is sealed secondarily using the outer cap, and the sealing force can be increased by applying pressure to the inner cap with the outer cap.

[0002] A cap is attached to the opening of a container where contents are stored and is responsible for opening and closing the opening; however, there is a problem where the sealing power decreases when it is reattached after being opened once.

[0003] To solve these problems, the technology to implement a stopper (cap) in a double structure includes:

[0004] Republic of Korea Utility Model Registration No. 20-0295731 (registered on November 6, 2002, hereinafter referred to as 'Literature 1') "Double cap for bottled water" is disclosed,

[0005] Literature 1 describes a technology for a double stopper for a water bottle that serves to block contaminants from a hot and cold water dispenser when drinking water by placing a different protective stopper over the existing water bottle stopper. This is achieved by fixing an inner cap to the opening of the water bottle, fixing an outer cap to the outside of the inner cap, forming a separating ridge on the inner upper circumference of the outer cap to form a tissue storage space between the inner cap and the outer cap, forming a stopper fixing ridge on the inside of the outer cap to be positioned in the water bottle fixing groove formed in the inner cap, and forming an inner cap catch ridge on the inner circumference of the outer cap to be positioned at the end of the inner cap.

[0006] As another technology, Korean Utility Model Registration No. 20-0336224 (registered Dec. 05, 2003, hereinafter referred to as 'Literature 2') "Double container assembly in which contents stored separately are mixed when the stopper is opened" is disclosed,

[0007] Reference 2 describes a double container assembly comprising: an outer container having an opening with a male screw formed on its outer surface; an inner container having an opening with a female screw formed on its inner surface and inserted into the opening of the outer container such that the opening faces the opening of the first container; a stopper that is sealed and fixed by the female screw formed on its inner surface being engaged with the male screw formed on the outer surface of the outer container; a disc-shaped fixing part coupled to the inner surface of the stopper; and a sealing member extending from the fixing part and having an insertion part having a male screw formed on its outer surface to engage with the female screw formed on the inner surface of the inner container. In this assembly, a rotation prevention means is formed on the inner surface of the opening part of the outer container and on the outer surface of the opening part of the inner container to prevent rotation of the inner container, so that when the stopper of the container is removed, the inner container contained within the outer container is separated from the stopper and falls naturally, allowing the contents stored in the inner container and the contents stored in the outer container to be naturally mixed.

[0008] Another technology is presented in Korean Utility Model Publication No. 20-2012-0001224 (published on February 22, 2012; hereinafter referred to as 'Literature 3'), titled "Binding structure of inner and outer caps of a double bottle cap."

[0009] Literature 3 describes a technology for an inner and outer stopper connection structure of a double bottle stopper, comprising a receiving portion that accommodates the outer edge of an inner stopper and has one or more connecting portions, an outer stopper that is integrally molded on the outside of the receiving portion and has an outer diameter and height greater than that of the receiving portion, and the connecting portion of the receiving portion having a stopper end and a periphery formed at a constant interval so that the inner stopper is fastened to the container injection portion to seal the container, and the outer stopper that is connected to the outside of the inner stopper so that the inner stopper can be effectively connected to and separated from the injection portion without applying excessive force.

[0010] Another technology is presented in Korean Utility Model Publication No. 20-2024-0000895 (published May 27, 2024; hereinafter referred to as 'Literature 4'), "Ceramic container with a double stopper structure."

[0011] Literature 4 describes a ceramic container with a double stopper structure, designed to improve the airtightness of a container body and a container lid made of ceramic material while maintaining high airtightness even after prolonged use, thereby preventing the airtightness from deteriorating or weakening. This is achieved by maintaining the airtightness of the internal space of the container body through a first stopper mounted on the inner surface of the spout of the container body, and further, by the inner surface of a second stopper mounted on the lower part of the container lid contacting the outer surface of the spout of the container body to once again close the internal space of the container body.

[0012] [Prior Art Literature]

[0013] [Patent Literature]

[0014] (Patent Document 1) Document 1. Republic of Korea Utility Model Registration No. 20-0295731 (Registered Nov. 06, 2002)

[0015] (Patent Document 2) Document 2. Republic of Korea Utility Model Registration No. 20-0336224 (Registered Dec. 05, 2003)

[0016] (Patent Document 3) Document 3. Korean Utility Model Publication No. 20-2012-0001224 (Published Feb. 22, 2012)

[0017] (Patent Document 4) Document 4. Korean Utility Model Publication No. 20-2024-0000895 (Published May 27, 2024)

[0018] The purpose of the present invention is to provide a container cap structure that prevents leakage of liquid contents stored in the container through a double cap structure using an inner cap and an outer cap.

[0019] Furthermore, the present invention aims to provide a container cap structure that not only enhances the sealing power of the inner cap through a structure of tight pressure of the outer cap against the inner cap when the outer cap is fastened to the opening of the container, but also ensures the sealing power of the inner cap even during prolonged use.

[0020] In order to solve the above-mentioned problem, the container cap structure according to the present invention is,

[0021] An inner cap that blocks the opening of the container; and

[0022] An outer cap that is fastened to the opening of the above container and accommodates the inner cap;

[0023] Includes,

[0024] The inner cap is characterized by comprising a head that is fitted into the opening of a container, a flange integrally formed on the upper part of the head and contacting the upper circumference of the opening of the container, and a grip integrally formed on the upper part of the flange.

[0025] The container cap structure according to the present invention is,

[0026] The double-cap structure prevents leakage of the liquid contents inside the container and ensures a tight seal even after multiple uses.

[0027] In addition, by separating the outer cap exposed on the outside of the double cap and partially separating the inner cap, it is possible to discharge a small amount of the liquid contents of the container, as well as control the discharge amount.

[0028] FIG. 1 is a three-dimensional exploded view showing a cap structure for a container according to the present invention.

[0029] FIG. 2 is an exploded cross-sectional view of FIG. 1,

[0030] FIG. 3 is a cross-sectional view showing the state in which an inner cap is fitted to the opening of a container,

[0031] FIG. 4 is a combined cross-sectional diagram showing the state in which an inner cap and an outer cap are mounted on the opening of a container,

[0032] FIG. 5 is a combined cross-sectional diagram to show a bottom pusher,

[0033] FIG. 6 is a combined cross-section and partial three-dimensional configuration diagram to show the flat portion and interspace of the inner cap, and the top pusher,

[0034] FIG. 7 is a three-dimensional configuration diagram showing the usage state of FIG. 6,

[0035] FIG. 8 is a cross-sectional configuration diagram showing the usage state of FIG. 6,

[0036] FIG. 9 is a three-dimensional and two-dimensional configuration diagram to show the posts of the inner cap,

[0037] FIG. 10 is a cross-sectional configuration diagram showing the usage state of FIG. 9.

[0038] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0039] Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely one preferred embodiment of the invention and do not represent all of the technical spirit of the invention; therefore, it should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0040] Based on Figure 1, the direction is specified as the outer cap side being the upper or four directions, and the inner cap side being the lower or downward direction.

[0041] As illustrated in FIGS. 1 to 10, the container cap structure according to the present invention is,

[0042] It is largely composed of an inner cap (10) and an outer cap (20).

[0043] If we look at each component,

[0044] The inner cap (10) above is

[0045] As illustrated in FIGS. 1 to 10,

[0046] It is intended to block the entrance (1a) of the container (1),

[0047] A head (11) that is fitted into the opening (1a) of the container (1),

[0048] A flange (12) integrally formed on the upper part of the head (11) and contacting the upper circumference of the opening (1a) of the container (1), and

[0049] A grip (13) integrally formed on the upper part of the above flange (12)

[0050] It consists of including

[0051] Here, the opening (1a) of the container (1) has a circular cross-sectional space, and the head (11) of the inner cap (10) has a circular cross-section and a diameter larger than the inner diameter of the opening (1a), so it is forcibly fitted into the opening (1a).

[0052] In other words, it is preferable that the head (11) has a diameter such that it can be forcibly fitted into the opening (1a) of the container (1), and it is also preferable that the head (11) be made of an elastic material, so that it can be fitted while elastically deforming when forcibly fitted into the opening (1a) of the container (1), thereby increasing the sealing force on the opening (1a) of the container (1).

[0053] And the above flange (12) is seated along the upper circumference of the opening (1a) of the container (1).

[0054] And the above grip (13) is intended for handling such as a user holding it with their hand and pulling or pushing it in, and it is preferable that it be a column structure with a square cross-section to provide a good grip.

[0055] The above outer cap (20) is

[0056] As illustrated in FIGS. 1 to 6,

[0057] It is fastened to the opening (1a) of the container (1) to press and fix the inner cap (10),

[0058] It is formed as a hollow cylindrical structure having a corresponding spiral portion (21) on the inner surface for mutual connection with a spiral portion (1b) formed on the outer surface of the opening (1a) of the container (1).

[0059] At this time, as shown in FIG. 5, a bottom pusher (22) is formed in the outer cap (20) to press the flange (12) of the inner cap (10) when connected to the inlet (1a) of the container (1), thereby further increasing the mutual contact force between the upper end of the inlet (1a) of the container (1) and the flange (12) of the inner cap (10), so that the gap between the upper end of the inlet (1a) of the container (1) and the flange (12) of the inner cap (10) can be eliminated, thereby preventing leakage as much as possible.

[0060] Furthermore, as shown in FIG. 5, when the outer cap (20) is connected to the inlet (1a) of the container (1), the inner bottom of the outer cap (20) presses the grip (13) of the inner cap (10), thereby helping to increase the mutual contact force between the inlet (1a) of the container (1) and the flange (12) of the inner cap (10), similar to the bottom pusher (22), but the degree of pressure may be weak.

[0061] To resolve this, as shown in FIG. 6, an upwardly protruding top pusher (23) is further formed on the inner bottom of the outer cap (20), so that when the outer cap (20) is connected to the opening (1a) of the container (1), the top pusher (23) can further press the grip (13) of the inner cap (10).

[0062] And as shown in FIGS. 6 and 7, the inner cap (10) has a pair of flat sections (111) formed facing each other along the lower circumference of the head (11). When the inner cap (10) is pulled upward from the inlet (1a) of the container (1), each flat section (111) comes out of the inlet (1a), thereby securing a space (S) between the inlet (1a) and each flat section (111). The liquid contents inside the container (1) can be discharged through the space (S) thus secured.

[0063] Ultimately, a pair of flat sections (111) are formed facing each other on the lower outer surface of the head (11). Since each of these flat sections (111) is not in contact with the inlet (1a) of the container (1), a space (S) is secured between them and the inlet (1a). When the grip (13) is grasped and pulled while the upper outer surface of the head (11) is blocking the inlet (1a), the upper outer surface of the head (11) moves away from the inlet (a), and the space (S) is opened, allowing for discharge into the space (S). Through this structure, the discharge amount can be controlled according to the degree of opening of the space (S) when discharging liquid contents from the container (1).

[0064] Furthermore, as shown in FIG. 1, a slip prevention part (24) for preventing slipping is formed on the outer surface of the outer cap (20). The slip prevention part (24) may be composed of a plurality of fine protrusions, or may be composed of a lattice-shaped raised structure or a recessed structure. This is an example, and it may be modified and changed in various ways within the range that satisfies the condition of not slipping when a user holds and operates the outer cap (20) with their hand.

[0065] The outer cap (20) formed by the above structure is fastened to the inlet (1a) of the container (1) and accommodates the inner cap (10), and when fastened to the inlet (1a) of the container (1), it ensures a sealing force for the inner cap (10).

[0066] Meanwhile, as shown in FIG. 9, a pair of posts (112) are formed in the inner cap (10), which are erected on the boundary surface between the head (11) and each flat part (111) and have a hollow space that is downwardly open inside as both ends are connected to each flat part (111).

[0067] Ultimately, as shown in FIG. 10, when the container (1) is inverted to discharge the liquid contents inside the container (1), the liquid contents are partially filled into the empty spaces of each post (112) and discharged to the outside, thereby preventing the liquid contents from suddenly pouring out. In other words, the time for the liquid contents to be discharged to the outside can be delayed until the container (1) is inverted to a certain angle during the process of inverting it.

[0068] In describing the present invention above, the focus has been on a "cap structure for a container" having a specific shape and structure with reference to the attached drawings; however, the present invention is capable of various modifications and changes by those skilled in the art, and such modifications and changes should be interpreted as falling within the scope of protection of the present invention.

Claims

1. An inner cap (10) that blocks the opening (1a) of the container (1); and It includes an outer cap (20) that is fastened to the opening (1a) of the container (1) and accommodates the inner cap (10); The inner cap (10) comprises a head (11) that is fitted into the opening (1a) of the container (1), a flange (12) that is integrally formed on the upper part of the head (11) and contacts the upper circumference of the opening (1a) of the container (1), and a grip (13) that is integrally formed on the upper part of the flange (12). The outer cap (20) has a bottom pusher (22) formed therein that presses the flange (12) of the inner cap (10) when connected to the inlet (1a) of the container (1). When the outer cap (20) is connected to the opening (1a) of the container (1), the inner bottom of the outer cap (20) presses against the grip (13) of the inner cap (10), and As the inner cap (10) has a pair of flat sections (111) formed facing each other along the lower circumference of the head (11), when the inner cap (10) is pulled upward from the inlet (1a) of the container (1), each flat section (111) comes out of the inlet (1a), thereby securing a space (S) between the inlet (1a) and each flat section (111). A container cap structure characterized by having a pair of posts (112) formed on the inner cap (10) at the boundary surface between the head (11) and each flat portion (111), with both ends connected to each flat portion (111) and having a hollow space that is open downward inside, so that when the container (1) is inverted to discharge the liquid contents inside the container (1), the liquid contents are partially filled into the hollow space of each post (112) and discharged to the outside.

2. In Paragraph 1, The opening (1a) of the above container (1) has a circular cross-sectional space, and A cap structure for a container, characterized in that the head (11) of the inner cap (10) has a circular cross-section and a diameter larger than the inner diameter of the inlet (1a), so as to be forcibly fitted into the inlet (1a).

3. In Paragraph 1, A container cap structure characterized by having a top pusher (23) formed in the outer cap (20) that presses the grip (13) of the inner cap (10) when connected to the opening (1a) of the container (1).

4. In Paragraph 1, The grip (13) of the inner cap (10) has a square cross-section, and A container cap structure characterized by having a slip-prevention portion (24) formed on the outer surface of the outer cap (20) to prevent slipping.

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