KR102540871B1 - Hermetic structure of the spout plug - Google Patents

Abstract

An airtight structure of a spout plug is disclosed. The airtight structure of the spout stopper of the present invention is a spout stopper in which an outer stopper is screwed to an inner stopper to block an inlet of a packaging can container, and the inner stopper is covered with a protective stopper and fixed to the inlet. A first inclined surface inclined toward the lower center of the inlet is formed at the upper edge of the edge, a second inclined surface corresponding to the first inclined surface is formed on the inner upper part of the protective cap, and the protective cap and the inner cap respond to temperature changes. In the case of contraction or expansion, the first and second inclined surfaces maintain close contact, and the direction of movement of the inner stopper due to the contraction is guided along a slope rather than a horizontal one, and as a result, the first contact portion of the inner stopper is connected to the can injection port. It is characterized in that it is prevented from falling directly from the straight portion of the can and the second contact portion is in close contact with the curvature portion of the can inlet.

Description

The airtight structure of the spout plug {HERMETIC STRUCTURE OF THE SPOUT PLUG}

The present invention relates to an airtight structure of a spout stopper, and more particularly, even when a spout stopper shrinks due to a temperature change, the inner stopper is connected to the inlet of a packaging can container by the inclined surface of the protective stopper and the inner stopper in contact with each other. It relates to an airtight structure of a spout stopper for preventing leakage of contents by maintaining close contact.

In general, the spout stopper used to prevent the contents of the can from leaking out or external dust or impurities from entering the inside of the can includes an inner stopper coupled to the inlet of the can container and an outer stopper screwed to the inner stopper. , and a protective stopper made to fix the inner stopper and the outer stopper to the inlet.

These spout stoppers are mainly molded with synthetic resin plastic, but since the inner stopper is molded with a softer material than the protective stopper to forcefully fit into the can inlet, the materials are different, so shrinkage due to temperature change occurs, especially in winter. Therefore, there were problems such as leakage of the contents or contamination of the contents due to air inflow.

As prior literature related to this, Republic of Korea Patent Registration No. 10-1262651 (published date: 2013.05.09.) discloses a stopper for a can container for packaging. This stopper closes the discharge port 210 of the can container 200, but has an ejection portion 120 for discharging the contents of the can container 200 at the center of the body 110 of the stopper 100 formed of a synthetic resin material. formed, the body 110 and the pouring part 120 are connected by the first corrugated part 130, and a fixing part 118 is formed on the lower side of the rim of the body 110 of the stopper 100, and the fixing part A locking protrusion 118a fitted into the locking jaw 212 of the outlet 210 of the can container 200 is formed along the lower edge of the inner circumferential surface of the 118.

In this prior art, as shown in FIG. 6 of the accompanying drawings, since the fixing member 150 corresponding to the protective stopper and the body 110 corresponding to the inner stopper are made of different materials, the shrinkage rate with respect to temperature change is different, so that the airtightness is different. There was a problem of falling off and leaking.

Republic of Korea Patent Registration No. 10-1262651 (Public date: 2013.05.09.)

An object of the present invention is to provide a means capable of preventing leakage by maintaining airtightness by taking advantage of structural characteristics when a stopper structure made of different materials shrinks or expands due to a temperature change.

In addition, the problem to be solved by the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned above will be clear to those skilled in the art from the description below. You will be able to understand.

According to the present invention, an outer stopper is screwed to an inner stopper to block an inlet of a packaging can container, and a spout stopper coupled to the inlet by covering the inner stopper with a protective stopper, A first inclined surface inclined towards the lower center of the inlet is formed in the region, a second inclined surface corresponding to the first inclined surface is formed on an inner upper part of the protective cap, and the protective cap and the inner cap shrink according to temperature change. Alternatively, in the case of expansion, the first and second inclined surfaces maintain close contact, and the direction of movement of the inner stopper due to contraction is guided along a non-horizontal slope along an oblique line, so that the first contact portion of the inner stopper is the straight portion of the can inlet It is achieved by the airtight structure of the spout stopper, which prevents the spout from falling right away and the second close contact part is more closely attached to the curvature of the can inlet.

The inner stopper may include a second close contact portion having a shape corresponding to the curvature of a curved portion at the uppermost end of the can container inlet in order to completely block it from the outside.

The inner plug has a third inclined surface that slopes downward toward the protective plug, and when the inner plug contracts according to temperature change, the third inclined surface contracts and adheres to the spaced space toward the inlet, thereby closing the inner plug. It may be made to maintain confidentiality between the and the protective cap.

An inclination angle of the contacting first and second inclined surfaces may be 45° ± 15°.

According to the present invention, a first inclined surface inclined toward the lower center of the injection port is formed at the upper edge of the inner stopper, and a second inclined surface corresponding to the first inclined surface is formed on the inner upper portion of the protective cap, so that the protective plug and the inner plug are formed. Even when it shrinks or expands according to temperature change, it contracts in the direction to provide an effect of maintaining airtightness between the inner stopper and the straight portion of the inlet of the packaging can container.

In addition, by having a second contact portion having a shape corresponding to the curvature of the bent portion, which is the uppermost end of the inlet, and having a third inclined surface, the third inclined surface contracts and adheres toward the inlet when the inner stopper shrinks, so that the inner stopper and the can container for packaging are contracted. It is possible to provide the effect of maintaining airtightness between the bent parts in the inlet of the.

Meanwhile, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a cross-sectional side view showing an airtight structure of a spout stopper according to the present invention.
FIG. 2 is an enlarged view of area 'A' before the airtight structure of the spout stopper according to FIG. 1 is coupled to the inlet.
FIG. 3 is an enlarged view of area 'A' after the airtight structure of the spout stopper according to FIG. 1 is coupled to the inlet.
Figures 4 (a) and (b) are diagrams showing the operating state of the first contact portion of the airtight structure of the spout stopper according to Figure 1.
Figures 5 (a) and (b) are views showing the operating state of the third inclined surface when the airtight structure of the spout stopper according to Figure 1 contracts.
6 is a diagram showing the prior art.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

In addition, it should be understood that when an element is referred to as being “connected” to another element, it may be directly connected to the other element, but another element may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist.

Also, terms used in this specification are for describing embodiments and are not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. The terms 'comprises' and/or 'comprising' used in the specification do not exclude the presence or addition of one or more other elements.

Among the accompanying drawings, Figure 1 is a cross-sectional side view showing the airtight structure of the spout stopper according to the present invention, and Figure 2 is an enlarged view of 'A' region before the airtight structure of the spout stopper according to FIG. 1 is coupled to the inlet. FIG. 3 is an enlarged view of 'A' area after the airtight structure of the spout stopper according to FIG. 1 is coupled to the inlet. In addition, (a) and (b) of FIG. 4 are views showing an operating state of the first contact part of the airtight structure of the spout stopper according to FIG. 1, and (a) and (b) of FIG. 5 are diagrams according to FIG. It is a diagram showing the operating state of the third inclined surface when the airtight structure of the spout cap is contracted.

In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to what is shown in the drawings, and is indicated by schematic lines to clearly distinguish various parts and regions. or enlarged.

As shown in FIG. 1, the airtight structure 100 of the spout stopper according to the present invention includes an inner stopper 120 coupled to the inlet of a can container and an outer stopper 20 screwed to the inner stopper 120. , and a protective stopper 140 made to fix the inner stopper 120 and the outer stopper 20 to the inlet 10 of the can container, and the stopper structures made of different materials shrink or expand due to temperature changes. When it occurs, it was devised to prevent leakage by maintaining confidentiality by utilizing structural characteristics.

As shown in FIG. 2, a first inclined surface 122 inclined toward the lower center of the injection hole may be formed in the upper edge region of the inner plug 120, and the first inclined surface 122 is formed on the inner upper portion of the protective plug 140 ( A second inclined surface 142 corresponding to 122) may be formed.

At this time, it is preferable that the inclination angle θ between the first and second inclined surfaces 122 and 142 in contact is within a range of 45° ± 15°.

This is to allow the contraction force acting on the center of the injection port to be applied toward the injection port 10 . If the inclination angle θ is small (eg, less than 30 degrees) or the inclination angle θ is large (eg, greater than 60 degrees), it is no different from contraction in a state without an inclined surface.

In general, the closed ring-shaped plastic shrinks toward a central point, and the contacting first and second inclined surfaces 122 and 142 are boundaries that allow the horizontally generated contraction force to be directed vertically.

Referring to FIG. 3 , when contraction occurs due to a temperature difference caused by an external environment, an example of contraction force generated at one point (●) will be described.

In general, a closed ring-shaped plastic contracts toward a central point, and accordingly, a contraction force is generated in a direction of ① at a point (●).

The contraction force in the ① direction of the inner plug 120 formed of a softer material than the protective cap 140 is caused by the contacting first and second inclined surfaces 122 and 142 and by the hard protective cap 140, ③ A contraction force is applied in the direction

At the same time, the contraction force is applied in the ② direction, and since the contraction force of the hook part 144 is also directed toward the center of the inlet 10, the contraction force is directed to the inlet 10, to the inner stopper 120 and the protective stopper 140 Even when shrinkage occurs, the inner stopper 120 and the linear portion 12 and the curved portion 14 in the inlet 10 of the can container for packaging do not fall apart and maintain close contact.

As shown in (a) and (b) of FIG. 4 , the inner stopper 120 includes a first contact portion 124 where the straight portion 12 of the can container inlet 10 abuts, and the inlet 10 The second close contact portion 126 in contact with the bent portion 14 of the, and the third inclined surface 128 inclined downward toward the protective cap 140 with a separation space (S) in the second close contact portion 126 can

The first contact portion 124 may protrude from one side of the protective cap 140 so that the straight portion 12 of the injection hole 10 comes into contact with it.

The second contact portion 126 may be formed in a shape corresponding to the curvature of the bent portion 14, which is the uppermost part of the can container inlet 10, to completely block the outside.

The third inclined surface 128, when the inner plug 120 is contracted, the third inclined surface 128 toward the injection port 10 (towards the separation space S formed between the protective plug 140 and the injection port 10) It may be made to maintain airtightness between the inner stopper 120, the injection hole 10, and the protective stopper 140 by contraction and close contact.

To explain the operating state of the third inclined surface 128 when the airtight structure 100 of the spout stopper according to the present invention configured as described above contracts due to temperature change with reference to FIGS. 5(a) and (b) do it with 5(b) is an enlarged view of the 'C' region of FIG. 3 and is exaggerated for convenience of description.

As shown in (a) of FIG. 5, before contraction, a separation space S is provided between the protective stopper 140, the inner stopper 120, and the inlet 10, and the third inclined surface 128 is It is formed in a downwardly inclined state towards the protective cap 140.

Among the accompanying drawings, as shown in FIG. 6, in the case of the prior art, if it is made on a horizontal surface rather than an inclined surface, when shrinkage occurs, the main shrinkage direction is the horizontal direction toward the center of the stopper, so the protective stopper 140 and the inner stopper There is bound to be a space between (120).

However, if the third inclined surface 128 of the present invention is inclined downward toward the protective cap 140, when shrinkage occurs, toward the center of the injection port 10, as shown in (b) of FIG. In the separation space (S), the curved portion 14 of the injection port 10 is contracted as if wrapped. That is, the third inclined surface 128 ', which is not a phenomenon that shrinks as if being horizontally sucked into the center of the inlet 10, is adjacent (shrinks) toward the bent portion 14 of the inlet 10 (lower right '↘' in the drawing). ) will do.

As described above, the first inclined surface 122 inclined toward the lower center of the injection hole is formed at the upper edge of the inner stopper 120, and the inner upper part of the protective stopper 140 corresponds to the first inclined surface 122. The second inclined surface 142 is formed so that even when the protective cap 140 and the inner cap 120 contract or expand according to temperature change, they contract in the direction so that the moving direction (shrinkage direction) of the inner cap 120 is horizontal. It guides the first and second inclined surfaces 122 and 142 obliquely along the first and second inclined surfaces 122 and 142, thereby preventing the first contact part 124 of the inner stopper from falling directly from the straight part of the can inlet, and the second contact part 126 It adheres further to the curved portion of the can inlet 10 .

In addition, by having a second contact portion 126 having a shape corresponding to the curvature of the curved portion 14, which is the uppermost end of the inlet 10, and having a third inclined surface 128, when the inner stopper 120 contracts The third inclined surface 128 contracts and adheres to the injection port 10 so that airtightness can be maintained between the inner stopper 120 and the bent portion 14 of the packaging can container.

On the other hand, the airtightness structure 100 of the spout stopper according to the present invention has the technical characteristics described in the present invention, and can be made in various shapes, shapes, standards, etc., of course.

In the foregoing, although specific embodiments of the present invention have been described and shown, the present invention is not limited to the described embodiments, and it is common knowledge in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and modified embodiments should fall within the scope of the claims of the present invention.

100: Confidentiality structure of spout stopper
120: inner stopper
122: first slope
124: first contact part
125: home
126: second close contact
128: third slope
140: protective cap
142: second slope
144: hanging part
S: Separation space
10: inlet
12: straight part
14: bend
16: free part
20: external plug

Claims (4)

An airtight structure of a spout stopper screwed to an inner stopper to block an inlet of a packaging can container, and covering the inner stopper with a protective stopper to fix it to the inlet,
A first inclined surface inclined toward the lower center of the inlet is formed at the upper edge of the inner stopper,
A second inclined surface corresponding to the first inclined surface is formed on the inner upper portion of the protective cap so that the second inclined surface directly contacts the first inclined surface without a sealing member,
When the protective cap and the inner cap shrink or expand according to temperature change, the displacement of the inner cap is made by sliding the first inclined surface in contact with the second inclined surface, and the first and second inclined surfaces are in close contact with each other. characterized in that it maintains the
Airtight structure of the spout plug. According to claim 1,
The inner stopper,
A first contact portion protruding and contacting the linear portion of the inlet; and
A second close contact portion having a shape corresponding to the curvature of the uppermost bent portion of the can container inlet to completely block the outside,
The contraction direction of the inner stopper is guided in an oblique direction along the first and second slopes instead of in a horizontal direction toward the center of the stopper, thereby preventing the first contact portion from falling directly from the straight portion of the inlet, and the second Characterized in that the close contact is more closely adhered to the curved portion of the inlet,
Airtight structure of the spout plug. According to claim 1,
The inner stopper,
A third inclined surface inclined downward toward the protective cap is formed,
When the inner plug shrinks according to the temperature change, the third inclined surface contracts and adheres to the separation space toward the inlet to maintain airtightness between the inner plug and the curved portion of the inlet. Characterized in that,
Airtight structure of the spout plug. According to claim 1,
The inclination angles of the first and second inclined surfaces in contact are
Characterized in that it is made in the range of 45 ° ± 15 °,
Airtight structure of the spout plug.

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