Cosmetic damage prevention lid assembly with bottom-opening gasket

Abstract

The present invention provides a cosmetic lid assembly equipped with a gasket in which the bottom of the gasket is open. [Solution] The present invention is a cosmetic lid assembly to be attached to a container for containing cosmetic contents including a liquid vitamin preparation, comprising: a cap attached to the connecting portion of the container by screw connection; a sealing packing member attached to the cap and inserted into the connecting portion to seal the inside of the container; and a decorative plate attached to the upper end of the cap to prevent the sealing packing member from being exposed to the outside, wherein the sealing packing member has a side wall portion formed such that its upper surface is closed and its lower surface is open.

Description

Technical Field

[0001] The present invention relates to a lid assembly for cosmetics, and more particularly to a lid assembly for cosmetics provided with a packing having a form with an open bottom.

Background Art

[0002] Conventional cosmetic containers have a problem that air can flow freely through the coupling portion between the container body and the cap even when the cap is coupled to the container body. That is, in most cases, cosmetics are used with the cap open on the body container. At this time, the discharge port (inlet) of the body container in which the cosmetics are stored can be directly exposed to the atmosphere.

[0003] Furthermore, if foreign substances, water, etc. in the atmosphere penetrate into the container through this discharge port, the inherent function of the cosmetics is lost, and there has been a problem that they can no longer be used as cosmetics.

[0004] On the other hand, conventional publications disclose cosmetic containers containing liquid vitamin agents and the like.

[0005] In the case of a container containing such a vitamin agent or the like, gas is generated inside the container due to shaking during transportation or carrying, and the pressure inside the container increases. In this case, the pressure expanded inside the container is applied to the lower part of the packing that seals the container, the packing is pushed up, and the sealing performance is deteriorated. In severe cases, problems such as leakage of the contents and inflow of air into the container have been raised.

[0006] Particularly, conventional cosmetic containers are manufactured by injection molding, but there is a limit in forming a constant curvature on the container inlet side (a curvature deviation of the container inlet occurs), and there are restrictions in improving the airtightness of the container.

[0007] Furthermore, airtightness may be compromised if the packing shrinks and expands and deforms due to external environmental factors (e.g., temperature and humidity) depending on the storage conditions of the container.

[0008] In recent years, in particular, a wide variety of vitamin C ampoule products with high vitamin C content, ranging from an initial 14% to as high as 30%, have been released.

[0009] Figure 1 is a photograph showing damage to the packing area of ​​a conventional high-concentration vitamin ampoule product due to internal pressure in the container. It illustrates the case where the center of the sealing packing member (3) attached to the cap (2) connected to the upper side of the container (1) is damaged by internal pressure (especially when the resin injection area formed during injection molding is easily damaged).

[0010] Therefore, the higher the vitamin C content, the more robust the lid sealing structure required for cosmetic containers to ensure airtightness. [Prior art documents] [Patent Documents]

[0011] [Patent Document 1] Republic of Korea Patent Publication No. 2005-0050378 (Publication date: May 31, 2005) [Overview of the project] [Problems that the invention aims to solve]

[0012] The present invention was made to solve the above-mentioned problems, and aims to provide a cosmetic lid assembly equipped with a bottom-opening gasket that can significantly improve the airtightness of cosmetic containers for high-vitamin C content. [Means for solving the problem]

[0013] To achieve the above objective, according to one embodiment of the present invention, a cosmetic lid assembly to be attached to a container for containing cosmetic contents including a liquid vitamin preparation, comprising: a cap attached to the connecting portion of the container by screw connection; a sealing packing member attached to the cap and inserted into the connecting portion to seal the inside of the container; and a decorative plate attached to the upper end of the cap to prevent the sealing packing member from being exposed to the outside, wherein the sealing packing member has a side wall portion formed such that its upper surface is closed and its lower surface is open, and the upper surface of the cap has an attachment hole formed therein The inner circumferential surface of the mounting hole has steps formed on it having mutually different diameters, the deco plate is mounted on the first upper surface of the inner circumferential surface with respect to the steps, and the upper surface of the sealing packing member is in close contact with the second lower surface of the inner circumferential surface, the cap and the sealing packing member are integrally formed through double injection molding, and the sealing packing member is provided with a bottom-open type packing comprising a central projection formed on the lower surface of the closed upper part of the side wall, and a plurality of recesses and protrusions formed along the edge with respect to the central projection.

[0014] Of the plurality of protrusions and recesses, the first protrusion or recess that is relatively close to the central protrusion is formed to be longer and lower than the other second protrusions and recesses, the lower end of the side wall portion has a side wall inclined surface that slopes inward, and at least one contact projection may be formed on the outer circumferential surface of the side wall portion. [Effects of the Invention]

[0015] According to the present invention, the cap and the sealing packing member are manufactured as a single unit through double injection molding, which has the advantage of being easily assembled.

[0016] By forming a side wall portion with an open bottom on the sealed packing member, the bottom wear phenomenon that occurs in existing packing members with a sealed bottom can be prevented, the length of the packing member can be relatively shortened, and automated assembly through machinery can be performed, thereby improving production efficiency.

[0017] By reinforcing the wall thickness of the packing through the central protrusion and the concavo-convex portions of the sealed packing member, deformation due to increased internal pressure can be prevented. Additionally, by ensuring that the gas rising inside the container is dispersed through the plurality of concavo-convex portions rather than concentrated in one place, airtightness can be improved (leakage prevention).

[0018] Also, by increasing the gas occupancy space through the sealed packing member with an open bottom, the increase in internal pressure can be reduced.

[0019] In addition, by forming an inclined surface in an inwardly inclined form at the end of the side wall portion of the sealed packing member, it is possible to prevent mucus from flowing into the gap and leaking due to increased internal pressure.

[0020] And, in the present invention, the problem of nail damage that occurred when the user removed the packing member in the past can be solved through the packing structure that is double-injected and integrated into the cap.

Brief Description of the Drawings

[0021] [Figure 1] Figure 1 is a photograph showing a state where the packing area of a conventional high-content vitamin ampoule product is damaged due to the internal pressure of the container. [Figure 2] Figure 2 is an exploded view of a cosmetic cap assembly provided with a bottom-open packing according to an embodiment of the present invention. [Figure 3] Figure 3 is a side cross-sectional reference view of the sealed packing member of a cosmetic cap assembly provided with a bottom-open packing according to an embodiment of the present invention. [Figure 4] Figure 4 is a partially cut-away view of a cosmetic cap assembly provided with a bottom-open packing according to an embodiment of the present invention. [Figure 5] Figure 5 is a side cross-sectional view of a cosmetic cap assembly provided with a bottom-open packing according to an embodiment of the present invention. [Figure 6] Figure 6 is a side cross-sectional view showing the use state of the sealed packing member of a cosmetic cap assembly provided with a bottom-open packing according to an embodiment of the present invention. [Figure 7]Figure 7 is a partial cross-sectional view showing a side cross-section of a sealing packing member of a cosmetic lid assembly equipped with a bottom-open type packing according to one embodiment of the present invention. [Figure 8] Figure 8 is a view of Figure 7 from below. [Modes for carrying out the invention]

[0022] The present invention will be described in more detail below with reference to the attached drawings. The present invention is not limited to the drawings shown below and may be embodied in other forms. Furthermore, the same reference number throughout the specification refers to the same component.

[0023] Referring to Figures 2 to 5, the cosmetic lid assembly with a bottom-opening packing according to the present invention is attached to a container (10) that contains cosmetic contents including liquid vitamins.

[0024] In the above configuration, the cap (20) is attached to the connecting part (15) of the container (10) by screw connection. The cap (20) has a mounting hole (21) at its upper end and screw threads inside, and is usually made of plastic material.

[0025] The sealing packing member (30) is integrally formed with the cap (20) through double injection molding and is inserted into the connecting portion (15) to seal the inside of the container (10).

[0026] The decorative plate (40) is attached to the upper end of the cap (20) and serves to prevent the sealing packing member (30) from being exposed to the outside. In other words, the finishing elements can be composed of a variety of hues and different materials depending on the environment in which they are used.

[0027] Referring to Figure 3, the sealing packing member (30) includes a side wall portion (35) formed such that its upper surface is closed and its lower surface is open. In other words, the side wall portion (35) can be configured as a cylindrical shape with an open bottom.

[0028] Furthermore, a central projection (31) is formed on the lower surface of the closed upper surface of the side wall portion (35). Multiple protrusions (32, 33) are formed along the edge, centered around the central protrusion (31).

[0029] In other words, a first uneven portion (32) is formed at a position relatively close to the central protrusion (31), and a second uneven portion (33) is formed at a position relatively far from the central protrusion (31). Here, the first uneven portion (32) is formed to be longer below the second uneven portion (33).

[0030] This improves airtightness by dispersing the gas that rises inside the container (10) through the central protrusion (31) and the first and second uneven portions (32, 33), rather than concentrating in one place. Furthermore, the central protrusion (31) and the first and second uneven portions (32, 33) perform the function of reinforcing the material of the upper surface of the sealing packing member (30), thereby preventing damage (cracking damage) caused by conventional increases in internal pressure.

[0031] On the other hand, the lower end of the side wall portion (35) is provided with a side wall inclined surface (35a) that is shaped to be inclined inward. This inclined side wall surface (35a) serves to guide the gas rising inside the container inward, preventing it from flowing into the gaps in the side wall (35) and causing leakage.

[0032] Furthermore, multiple contact protrusions (36) are formed on the outer circumferential surface of the side wall portion (35a), and these contact protrusions (36) adhere tightly to the inner wall of the connecting portion (15) of the container (10), thereby further improving airtightness.

[0033] Referring to Figures 6 to 8, a mounting hole (21; see Figure 3) is formed on the upper surface of the cap (20), and steps (21A) with different diameters are formed on the inner circumferential surface of the mounting hole (21). Based on this step (21A), the inner circumferential surface of the mounting hole (21) is divided into a first surface (25a) and a second surface (25b).

[0034] Here, a decorative plate (40) is attached to the upper first surface (25a), using the step (21A) as a reference. Furthermore, the upper surface of the sealing packing member (30) is in close contact with the lower second surface (25b) based on the step (21A).

[0035] The cosmetic lid assembly of the present invention, which has such a configuration and is equipped with a bottom-open type packing, can be easily assembled as the cap (20) and the sealing packing member (30) are manufactured as a single unit through double injection molding.

[0036] Furthermore, by forming a side wall portion (35) with an open bottom on the sealing packing member (30), the bottom abrasion phenomenon that occurs with existing packing members with a sealed bottom (the problem of the sealed bottom surface of the packing abrading when it hits the container opening during connection (leading to foreign matter ingress)) is prevented.

[0037] Furthermore, the sealing packing member (30) of the present invention can ensure sufficient airtightness even if the length of the side wall portion (32) is relatively short, enabling automated assembly through machinery and improving production efficiency.

[0038] Furthermore, by reinforcing the thickness of the packing through the central protrusion (31) and multiple recesses (32, 33) of the sealing packing member (30), deformation due to increased internal pressure can be prevented. In addition, the airtightness can be further improved by dispersing the gas rising inside the container (10) through the multiple uneven surfaces (32, 33) instead of concentrating in one place.

[0039] Furthermore, by increasing the gas-occupied space through the sealed packing member (30) with an open bottom, the increase in internal pressure can be reduced (this also has the effect of preventing liquid leakage).

[0040] In addition, by forming an inclined surface (35a) that slopes inward at the end of the side wall portion (35) of the sealing packing member (30), it is possible to prevent mucus from flowing into the gap and leaking due to an increase in internal pressure.

[0041] Although the present invention has been illustrated and described above with reference to specific embodiments, the present invention is not limited to the embodiments described above. Anyone with ordinary skill in the art to which the present invention belongs can modify and implement it in any way that does not depart from the gist of the technical idea of ​​the present invention as described in the following claims.

Claims

1. A cosmetic lid assembly that is fitted onto a container for holding cosmetic contents containing liquid vitamins, A cap is attached to the connecting part of the aforementioned container using a screw connection method, A sealing packing member is attached to the cap and inserted into the connecting portion to seal the inside of the container, The cap includes a decorative plate attached to the upper end of the cap to prevent the sealing packing member from being exposed to the outside, The aforementioned sealing packing member is characterized by having a side wall portion formed such that the upper surface is closed and the lower surface is open, making it a cosmetic lid assembly.

2. The cosmetic lid assembly according to claim 1, characterized in that the sealing packing member includes a central projection formed on the lower surface of the sealed upper part of the side wall, and an uneven portion that protrudes along the edge with respect to the central projection.

3. The cosmetic lid assembly according to claim 2, characterized in that the aforementioned uneven portion is composed of a plurality of portions, a first uneven portion is formed at a position relatively close to the central protrusion, a second uneven portion is formed at a position relatively far from the central protrusion, and the first uneven portion is formed to be longer and lower than the second uneven portion.

4. The cosmetic lid assembly according to claim 2 or 3, characterized in that the lower end of the side wall portion has a side wall inclined surface that is inclined inward, and at least one contact projection is formed on the outer circumferential surface of the side wall portion.

5. The cosmetic lid assembly according to claim 1, characterized in that a mounting hole is formed on the upper surface of the cap, steps having different diameters are formed on the inner circumferential surface of the mounting hole, the decorative plate is mounted on the upper part with respect to the steps, and the upper surface of the sealing packing member is in close contact with the lower part with respect to the steps.

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