KR102164243B1 - System for opening hole by reverse arch typed neck having potential energy - Google Patents

Abstract

The present invention provides an automatic opening system through potential energy of a reverse arch type neck, comprising: a mount unit provided on the upper surface of a packaging pack to form a withdrawal hole matched with an opening and closing hole formed on the packaging pack; a covering unit provided at one side of the mount unit to open and close the upper part of the mount unit; and a neck unit connecting the mount unit and the covering unit to each other, storing tensional potential energy forming closing resistance therein when the covering unit covers the upper part of the mount unit and accordingly, enabling the covering unit to be automatically opened from the mount unit through the stored tensional potential energy if the covering unit is arbitrarily opened. The present invention can automatically open the upper surface of a wet tissue packaging pack through the structural shape and the restoration force of the neck unit.

Description

System for opening hole by reverse arch typed neck having potential energy}

The present invention relates to a system for automatically opening the outlet of a wet tissue packaging pack, and more specifically, having a neck in the form of an inverted arch, and when covering the top of the packaging pack, a neck in the form of an inverted arch. The automatic opening system through the potential energy of the inverted arched neck, in which the inlet of the packaging pack is automatically opened by the resilience of the accumulated potential energy when the packaging pack is opened. It is a technical field.

The largest market for wet wipes is North America. According to Euromonitor, a market research organization, the size of the US wet wipes market in 2017 was estimated at $2.8 billion. Over the past 5 years, the market has shown a positive growth trend with an annual average growth rate of 2~3%.

Considering market maturity and price competition, the market growth is expected to slow slightly, but it is clear that the North American market is still the largest market for wet wipes.

The field that recorded the highest sales in the wet tissue market in 2017 was baby wipes, accounting for 59% of the total sales of wet wipes. Growth is expected to slow due to market saturation and intensifying price competition.

On the other hand, cosmetic wipes are the area with the highest growth rate. The increasing popularity of cleansing tissues with anti-aging, detox, and moisture supply functions led the growth of cosmetic wipes, and this growth is expected to continue.

There are some attempts to improve the technology related to the wet tissue packaging pack.

"Semi-automatic opening and closing lid for wet tissue packaging pack (Registration No. 20-0478494, hereinafter referred to as Patent Document 1)" is such.

In the case of the design according to Patent Document 1, it relates to a semi-automatic opening and closing lid for a wet tissue packaging pack, and more specifically, an elastic opening installed between the fixed body and the cover during opening operation by unlocking the cover coupled to the top of the fixed body by an opening and closing means. It is automatically opened by the elastic force of the means, but the elastic opening means is composed of an elastic actuator having a protrusion that moves upward and downward by protruding the central part of the body, and pushes the cover by the elastic force that presses the protrusion to completely flip the cover. Disclosing a technical idea that works to open up.

In addition, there is also a "opening and closing device for wet tissue packaging pack (Registration No. 10-1940375, hereinafter referred to as Patent Document 2)".

In the case of the invention according to Patent Document 2, it is about an opening and closing device for a wet tissue packaging pack, and is an elastic film that is basically used for sealing wet tissues before first use, and then discarded, or an attachment attached to the upper surface of the opening and closing plate for advertisements. It is an opening and closing device for wet tissue packaging packs that enables automatic opening of the opening and closing plate using a film.

There is also a "opening and closing device for a packaging pack and a packaging pack including the same (Registration No. 10-1932356, hereinafter referred to as Patent Document 3)".

In the case of the invention according to Patent Document 3, it provides an opening and closing device for a packaging pack and a packaging pack including the same.

The opening and closing device for a packaging pack according to Patent Document 3 has a lower surface facing the inside of the packaging pack, an upper surface facing the outside of the packaging pack, a fixing frame surrounding the open part and coupled to one surface of the packaging pack, inside the open part A lead-out part including a handle part formed by protruding upward from the contact point between the first line and the second line, and the contact between the first line and the second line, which is located in and connected to each other and has a thickness thinner than the surrounding thickness of the open part, open A tweezers including an opening/closing unit coupled to one side of the unit and capable of opening and closing to cover all the withdrawals, and a fixing unit disposed on the open unit or on the opening/closing unit, and tweezers detachable by the fixing unit and located in a range covered by the opening and closing unit Include.

In addition, there is also a "wet tissue case opening and closing structure (Registration No. 10-1831794, hereinafter referred to as Patent Document 4)".

The invention according to Patent Document 4 relates to a wet tissue case opening/closing structure that facilitates opening and closing of the wet tissue case and improving manufacturing efficiency while solving problems such as loss or eating by a child due to detachment of the elastic body used for conventional opening and closing. The upper cap and lower cap are formed on the upper side and have a fixing part formed thereon, and one end is connected to one end of the lower cap, and the other end is combined with the fixing part to cover the lower cap, or the other end is separated from the fixing part to open the lower cap It is formed on the upper surface of the cap or on one surface of the upper cap, and includes a support part supporting between both ends of the upper cap, but when the support part supports the upper cap, the height of the other end of the upper cap is the other end when the upper cap is combined with the fixing part. It is characterized by being higher than the height of.

In the case of the existing patent documents, a separate device must be equipped with or provided with a device in order to achieve the desired object as in the present invention, and thus there was a problem of an increase in the manufacturing cost or the defect rate due to the complexity of the process. There are problems that greatly weaken

Registration No. 20-0478494 Registration number 10-1940375 Registration number 10-1932356 Registration number 10-1831794

The automatic opening system through the potential energy of the inverted arcuate neck according to the present invention has been devised to solve the conventional problem as described above, and presents the following problems to be solved.

First, it is intended to provide an opening/closing cover that can be opened automatically without being manually opened by a user when opening the opening of a packaging pack such as wet tissue.

Second, it is intended to provide a semi-permanent opening device by mechanical energy through structural transformation without adding a separate external device or parts.

The problem to be solved of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The automatic opening system through the potential energy of the inverted arched neck according to the present invention has the following problem solving means for the above problem to be solved.

The automatic opening system through the potential energy of the inverted arcuate neck according to the present invention is provided on the upper surface of the packaging pack, and comprises a mounting unit that forms an outlet matching the opening and closing openings formed in the packaging pack; A covering unit provided on one side of the mount unit to open and close an upper portion of the mount unit; And when the mounting unit and the covering unit are interconnected, and when the covering unit covers an upper portion of the mount unit, tension potential energy that forms a closing resistance is accumulated, and when the covering unit is arbitrarily opened, It may be characterized in that it comprises a neck unit (neck unit) to automatically open the covering unit from the covering unit through the accumulated tension potential energy.

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, the mount unit comprises a frame portion forming a body of the mount unit and fixedly seated on the upper surface of the packaging pack; An edge cover part provided on an edge of the frame part and protruding from an upper surface of the frame part to contact and seal a side surface of the covering unit; And a barrier portion provided inside the edge cover portion and protruding from an upper surface of the frame portion to face a lower surface of the covering unit.

In the case of the automatic opening system through the potential energy of the inverted arcuate neck according to the present invention, the covering unit comprises: a plate portion forming a body of the covering unit and selectively covering an upper portion of the frame portion; And a sealing portion provided on a lower surface of the plate portion and protruding toward the frame portion when the plate portion covers the upper portion of the frame portion.

In the case of the automatic opening system through the potential energy of the inverted arcuate neck according to the present invention, the outer circumferential surface of the sealing part is in close contact with the inner circumferential surface of the barrier, or the inner circumferential surface of the sealing part is in close contact with the outer circumferential surface of the barrier, so that the covering unit When covering the upper part of the mount unit, it may be characterized in that the opening and closing ports are prevented from being exposed to external air.

In the case of the automatic opening system through the potential energy of the inverted arcuate neck according to the present invention, the neck unit is provided at one end of the frame portion, is bent by an external force, and has a predetermined tension force to provide the external force. A tension bending unit having a restoring force due to the predetermined tension force when it is removed; And a flexible arch portion interconnecting one end of the tension bending portion and the plate portion, and forming an upwardly concave reverse arch when the plate portion covers an upper portion of the mount unit. .

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, the tension bending part is provided at a lower end of one end of the frame part, and when the plate part covers the upper part of the frame part, one end of the frame part It may be characterized in that it is curved by the upper end of the.

In the case of the automatic opening system using the potential energy of the inverted arcuate neck according to the present invention, the tension bending unit may be curved by an upper end of one end of the frame unit to accumulate the predetermined tension force.

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, one end of the flexible arch part is connected to the tension bending part, the other end is connected to one end of the plate part, and from one end of the flexible arch part The thickness of the flexible arch portion gradually expands toward the other end of the flexible arch portion, and the contact area of the lower surface of the flexible arch portion gradually increases while the plate portion covers the upper portion of the frame portion.

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, the flexible arch portion, an extension resistance portion formed to be concave upward while the plate portion covers the upper portion of the frame portion; And a compression resistance portion formed to be convex downward while the plate portion covers an upper portion of the frame portion.

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, the extension resistance part is expanded in the process of the plate part covering the upper part of the frame part, and the restoring force to restore the expanded area is accumulated. In the process of covering the upper portion of the frame portion, the compression resistance portion increases a portion of the downward convex area in contact with the upper surface of the frame portion, thereby generating a compressive force in the downward convex area, and a resistance force due to the compression force. It can be characterized by being.

The automatic opening system through the potential energy of the inverted arched neck according to the present invention having the above configuration provides the following effects.

First, through the structural shape and material resilience of the neck unit connecting the mounting unit and the covering unit, it is possible to automatically open the upper surface of the wet tissue packaging pack without mobilizing additional devices or parts.

Second, it can be formed through a single injection.

Third, through the transformation of the mechanical structure, the material's own potential energy is accumulated to automatically open the wet tissue packaging pack.

Fourth, it provides an automatic opening device for wet tissue packaging packs that can be used semi-permanently by applying tensile and compressive forces within the limits of the restoring force of the material itself.

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

1 is a perspective view of an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention.
2 is a perspective view of another form showing the opening of the covering unit of the automatic opening system through the potential energy of the inverted arcuate neck according to an embodiment of the present invention.
3 is an enlarged cross-sectional view illustrating an enlarged view of a neck unit of an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention.
4 is an enlarged cross-sectional view of a neck unit portion of an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention.
5 is a perspective view illustrating a state in which a covering unit covers an upper portion of a mount unit in an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention.
6 is a use state diagram showing that the covering unit of the automatic opening system through the potential energy of the inverted arcuate neck according to an embodiment of the present invention is automatically opened by the elasticity of the neck unit.
7 is a partially enlarged view showing a state in which the covering unit is opened before the elasticity of the neck unit is accumulated in the covering unit of the automatic opening system through the potential energy of the inverted arcuate neck according to an embodiment of the present invention.

The automatic opening system using the potential energy of the inverted arcuate neck according to the present invention can apply various changes and have various embodiments. Specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood as including all changes, equivalents, and substitutes included in the technical spirit and scope of the present invention.

1 is a perspective view of an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention. 2 is a perspective view of another form showing the opening of the covering unit of the automatic opening system through the potential energy of the inverted arcuate neck according to an embodiment of the present invention. 3 is an enlarged cross-sectional view illustrating an enlarged view of a neck unit of an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention. 4 is an enlarged cross-sectional view of a neck unit portion of an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention. 5 is a perspective view illustrating a state in which a covering unit covers an upper portion of a mount unit in an automatic opening system through potential energy of an inverted arcuate neck according to an embodiment of the present invention. 6 is a use state diagram showing that the covering unit of the automatic opening system through the potential energy of the inverted arcuate neck according to an embodiment of the present invention is automatically opened by the elasticity of the neck unit. 7 is a partially enlarged view showing a state in which the covering unit is opened before the elasticity of the neck unit is accumulated in the covering unit of the automatic opening system through the potential energy of the inverted arcuate neck according to an embodiment of the present invention.

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, it is mounted on the opening formed on the upper part of the packaging pack 1 such as wet wipes, and is used to manage whether or not the outlet matching this opening is opened. do.

In the case of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, as shown in Figs. 1 and 2, a mounting unit (100), a covering unit (covering unit, 200), and a neck unit ( Neck unit, 300) may be included.

First, in the case of the mount unit 100, as shown in Figs. 1 and 2, it is provided on the upper surface of the packaging pack 1, and corresponds to a configuration that forms an outlet matching the opening and closing openings formed in the packaging pack.

In the case of the covering unit 200, it is provided on one side of the mount unit 100, is hinged from one side of the mount unit 100 through a neck unit 300 to be described later, and is connected to the top of the mount unit 100 It corresponds to the configuration of opening and closing.

The mount unit 100, the covering unit 200, and the neck unit 300 to be described later are preferably formed through one injection molding, and an integrated body formed through such one injection molding This is because the durability of the product is excellent and manufacturing cost can be minimized.

If it is formed through one injection molding, it is formed as one body, but each part has a different function to perform, so grab and explain each component to form a right according to the function. To

In the case of the neck unit 300, as described above, the mounting unit 100 and the covering unit 200 are interconnected.

The neck unit 300 is a structure in which the covering unit 200 is hingedly connected from the mount unit 100, and when a pulling force or bending force is generated from the outside, a circular shape due to its own elastic force and restoring force It is advisable to have the attributes that you want to return to.

Materials of the mount unit 100, the covering unit 200, and the neck unit 300 may be formed of polypropylene (PP) or the like.

In the case of the neck unit 300, when the covering unit 200 covers the top of the mount unit 100, tension potential energy is accumulated while forming a closing resistance, and is mounted by this tension potential energy. The covering unit 200 covering the top of the unit 100 can be opened automatically.

In the case of the neck unit 300, when the covering unit 200 covers the upper portion of the mount unit 100 and is closed, if the user provides the minimum force for arbitrary opening, the tension potential energy, which is the force accumulated by itself, is To automatically open the covering unit 200.

For example, when the covering unit 200 is closed, the wedge portion 230 of the covering unit 200 is caught by the locking projection 140 of the mount unit 100 and is kept closed, and the user When the state of being caught by the locking projection 140 is released, the covering unit 200 is automatically opened by the tension potential energy accumulated in the neck unit 300. That is, the state as shown in FIG. 2 is a state in which the tension potential energy of the covering unit 200 is very low, and the state as in FIG. 5 may be regarded as a state in which the tension potential energy is close to the maximum.

As shown in FIG. 1, in the case of the mount unit 100, a frame portion 110, an edge cover portion 120, and a barrier portion 130 may be included.

In the case of the frame unit 110, as shown in FIGS. 1 and 2, it forms a body of the mount unit 100, and is fixed and seated on the upper surface of the packaging pack 1.

Inside the frame unit 110, an outlet as mentioned above is formed, and the outlet is a part that matches the opening and closing of the packaging pack 1.

The outlet of the frame unit 110 corresponds to an opening formed to be similar to the area of the opening and closing of the packaging pack 1.

In the case of the edge cover unit 120, it is provided on the rim of the frame unit 110, protrudes from the upper surface of the frame unit 110 and contacts the side surface of the covering unit 200 to seal.

The edge cover part 120 is a type of barrier formed on the edge of the frame part 110, as shown in FIG. 1, and is formed so that the outer peripheral surface of the covering unit 200 is in close contact with the inner surface of the edge cover part 120 Thus, the sealing force when the edge cover part 120 is closed is reinforced, and a clean appearance is formed when viewed from the outside.

In the case of the barrier portion 130, it is provided inside the edge cover portion 120, and corresponds to a configuration in which the upper surface of the frame portion 110 is formed to protrude from the upper surface of the frame portion 110 to face the lower surface of the covering unit 2000.

In the case of the barrier portion 130, as shown in FIG. 1, it is formed inside the edge cover portion 120 and on the upper surface of the frame portion 110. The blunt portion 130 is like a kind of fence surrounding the outlet, and corresponds to a configuration that maximizes the sealing force by contacting the sealing portion 220 to be described later.

In the case of the covering unit 200 of the automatic opening system through the potential energy of the inverted arcuate neck according to the present invention, as shown in Figs. 1 and 2, the plate (210) and the sealing (sealing) 220 ) Can be included.

As shown in FIGS. 1 and 2, the plate part 210 forms a body of the covering unit 200, and selectively covers an upper portion of the frame part 110.

As described above, the rim of the plate portion 210 is preferably formed to be in close contact with the inner surface of the edge cover portion 120 to reinforce the sealing force.

In the case of the sealing part 220, as a configuration provided on the lower surface of the plate part 210, as described above, it contacts the buttock part 130 to maximize the sealing force, and the opening and closing of the wet tissue packing pack 1 Through the outlet of the mount unit 100, the wet tissue is prevented from being exposed to external air, as well as drying.

The sealing part 220 is formed on the lower surface of the plate part 210 (referring to the lower surface of the plate part 210 when the upper surface of the mount unit 100 is closed), and protrudes toward the frame part 110 It corresponds to the configuration.

In the case of the blunt portion 130 and the sealing portion 220, in order to realize and secure the desired function, the outer circumferential surface of the sealing portion 220 is in close contact with the inner circumferential surface of the blunt portion 130, or It is preferable that the inner circumferential surface is in close contact with the outer circumferential surface of the blunt portion 130.

In the case of the neck unit 300 of the automatic open system through the potential energy of the inverted arched neck according to the present invention, a configuration including a tension bending (tensional bending) unit 310 and a flexible arch (flexible arch) unit 320 Corresponds to.

In the case of the tension bending unit 310, as shown in Figs. 3 and 4, it is provided at one end of the frame unit 110, and is bent or finely stretched by an external force, but a predetermined tension force is formed by this external force. (tension force) is formed, and when this external force is removed, a restoring force is provided by a predetermined tension force.

In the case of the flexible arch part 320, as shown in FIGS. 3 and 4, the tension bending part 310 and one end of the plate part 210 are interconnected, and the plate part 210 is the mount unit 100 When covering the top of, it corresponds to a configuration that forms an upward concave reverse arch (reverse arch).

Further, in the case of the tension bending unit 310, as shown in Figs. 3, 4 and 7, it is provided, that is, attached to the lower end (see Fig. 7) of one end of the frame unit 110, that is, such a plate unit 210 ) Has a characteristic of being curved by the upper end of one end of the frame part 110 in the process of covering the upper part of the frame part 110. In this process, as described above, the tension bending unit 310 has a force that resists bending, that is, tension potential energy, and has a restoring force by this energy. Naturally, the bending process as shown in FIG. 3 is bending to a restorable range of the tension bending unit 310.

In this process, as shown in Figs. 3 and 4, the flexible arch part 320 has one end connected to the tension bending part 310, the other end connected to one end of the plate part 210, and the flexible arch part It is a configuration in which the thickness gradually expands, that is, becomes thicker as it goes from one end of 320 to the other end of the flexible arch part 320. It is preferable that the thickest portion of the flexible arch portion 320 matches the thickness of the plate portion 210 of the covering unit 200.

3 and 4, in a process in which the covering unit 200 covers the upper portion of the mount unit 100, the plate portion 210 covers the upper portion of the frame portion 110 while the flexible arch portion 320 The contact area of the lower surface of) gradually increases.

3 and 4, in the case of the flexible arch portion 320 of the automatic opening system through the potential energy of the inverted arched neck according to the present invention, the extension resistance portion 321, and the compression resistance portion 322 Can include.

As described above, the flexible arch portion 320 is in the form of an inverted arch with a concave upper portion based on the state in which the covering unit 200 covers the upper portion of the mount unit 100, and forms the upper portion of the inverted arch. The portion is the extension resistance portion 321, and the portion forming the lower portion of the inverted arch corresponds to the compression resistance portion 322.

While the covering unit 200 closes the upper portion of the mount unit 100, the extension resistance unit 321 increases, and a predetermined tension potential energy means a force to return to a state in which the increased shape is restored.

While the covering unit 200 closes the upper portion of the mount unit 100, the compression resistance unit 322 is compressed, and a predetermined tension potential energy means a force to return to a state in which the compressed form is restored.

That is, the flexible arch portion 320 of the neck unit 300 is formed as a set of PP particles. As these particles expand the spacing of the particles in the extension resistance portion 321, the plate portion 210 becomes the frame portion 110 In the process of covering the upper part of ), the area of the upper surface is expanded, and the resilience force to reduce this expanded area is accumulated.

In addition, the compression resistance unit 322 increases the portion of the downward convex area in contact with the upper surface of the frame unit 110 during the process of the plate unit 210 covering the upper portion of the frame unit 110, and the downward convex area increases Is generated, and a resistance force due to compression force is generated.

As described above, the covering unit 200 by the restoring force generated at the same time in the extension resistance portion 321 and the compression resistance portion 322, not the restoring force alone of the extension resistance portion 321 or the compression resistance portion 322 Is automatically opened from the mount unit 100.

By the restoring force generated at the same time in the extension resistance portion 321 and the compression resistance portion 322, as shown in Figs. 5 and 6, the force to be automatically opened is accumulated.

As shown in Figure 5, by the restoring force generated at the same time in the extension resistance portion 321 and the compression resistance portion 322, the plate portion 210 of the covering unit 200 has an upward convex shape. The tension force of the plate portion 210 itself is formed to have a force added to the restoring force simultaneously generated in the extension resistance portion 321 and the compression resistance portion 322 as described above.

In the process of contracting the lower surface of the compression resistance unit 322, as described above, the area in contact with the upper surface of the frame unit 110 increases, and at the same time, the lower surface of the compression resistance unit 322 is contracted. During the process, a frictional force with the upper surface of the frame unit 110 is generated due to the frictional force on the surface of the lower surface of the compression resistance unit 322, and thus the force condensed on the compression resistance unit 322 may be further increased.

The scope of the rights of the present invention is determined by the matters described in the claims, and the parentheses used in the claims are not described for selective limitation, but are used for clear elements, and descriptions in parentheses are also interpreted as essential elements. Should be.

1: packing pack
100: mount unit
110: frame part
120: edge cover portion
130: hip part
140: locking jaw portion
200: covering unit
210: plate portion
220: sealing unit
300: neck unit
310: tensional bending unit
320: flexible arch (flexible arch) portion
321: extension resistance unit
322: compression resistance unit

Claims (8)

A mounting unit provided on the upper surface of the packaging pack and forming an outlet matching the opening and closing openings formed in the packaging pack;
A covering unit provided on one side of the mount unit to open and close an upper portion of the mount unit; And
The mounting unit and the covering unit are interconnected, and when the covering unit covers the upper portion of the mount unit, tension potential energy that forms a closing resistance is accumulated, and when the covering unit is arbitrarily opened, it is accumulated. It includes a neck unit (neck unit) to automatically open the covering unit from the covering unit through the tension potential energy,
The neck unit,
A tension bending unit provided at one end of the mount unit, bent by an external force, and having a predetermined tension force to provide a restoring force by the predetermined tension force when the external force is removed; And
It characterized in that it comprises a flexible arch portion interconnecting the tension bending portion and one end of the covering unit, and forming an upward concave reverse arch (reverse arch) when the covering unit covers the upper portion of the mounting unit, Automatic opening system through the potential energy of the inverted arched neck.
The method of claim 1, wherein the mount unit,
A frame portion forming a body of the mount unit and fixedly seated on an upper surface of the packaging pack;
An edge cover part provided on an edge of the frame part, protruding from an upper surface of the frame part, and positioned on a side surface of the covering unit to seal; And
It is provided on the inner side of the edge cover portion, characterized in that it comprises a barrier portion protruding from the upper surface of the frame portion to face the lower surface of the covering unit, automatic opening system through the potential energy of the inverted arched neck.
The method of claim 2, wherein the covering unit,
A plate portion forming a body of the covering unit and selectively covering an upper portion of the frame portion; And
It is provided on the lower surface of the plate portion, characterized in that when the plate portion covers the upper portion of the frame portion, comprising a sealing portion protruding toward the frame portion, the automatic opening system through the potential energy of the inverted arched neck.
The method of claim 3, wherein the tension bending unit,
It is provided at a lower end of one end of the frame part, and when the plate part covers an upper part of the frame part, it is curved by the upper end of the one end of the frame part. Automatic opening system through potential energy of an inverted arcuate neck.
The method of claim 4, wherein the tension bending unit,
An automatic opening system through potential energy of an inverted arched neck, characterized in that the predetermined tension force is accumulated while being curved by the upper end of one end of the frame portion.
The method of claim 5, wherein the flexible arch portion,
One end is connected to the tension bending part, the other end is connected to one end of the plate part,
The thickness of the flexible arch portion gradually expands from one end of the flexible arch portion to the other end of the flexible arch portion,
An automatic opening system through potential energy of an inverted arcuate neck, characterized in that the contact area of the lower surface of the flexible arch portion gradually increases while the plate portion covers the upper portion of the frame portion.
The method of claim 6, wherein the flexible arch portion,
An extension resistance portion formed to be concave upward while the plate portion covers an upper portion of the frame portion; And
And a compression resistance portion formed to be convex downward while the plate portion covers an upper portion of the frame portion. An automatic opening system through potential energy of an inverted arcuate neck.
The method of claim 7,
The extension resistance part,
In the process of the plate part covering the upper part of the frame part, the area is expanded, and a restoring force to restore the expanded area is accumulated,
The compression resistance unit,
In the process of covering the upper portion of the frame portion of the plate portion, a portion of the downwardly convex area that contacts the upper surface of the frame portion increases, and a compressive force is generated in the downwardly convex area, and a resistance force by the compression force is generated, Automatic opening system through the potential energy of the inverted arched neck.

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