KR20090096269A - Cap of bottle - Google Patents

Abstract

A bottle cap is provided to check the opening state of a bottle and to continuously let a user know the opening of the bottle by preventing the relative rotation due to the mutual interference between an inner cap and a middle cap. A bottle cap is composed of a sealing cap in which a screw thread is formed in the inner circumference to be engaged with the screw thread formed in a discharging stopper, an inner cap(110) which is arranged to surround the sealing cap and is fixed with the sealing cap, a middle cap(120) which is arranged to surround the inner cap and is relative-rotated in the designated angle with the inner cap, and an outer cap(130) in which the middle cap is inserted. The bottle cap is combined to a discharging stopper(50) installed at the entrance of a bottle(10). The sealing cap is formed in the same shape as the bottle cap. A window(125) is formed in the middle cap so that a part of the inner cap is exposed.

Description

Cap of bottle {

The present invention relates to a bottle cap, and more particularly, to a bottle cap that the user can easily check the opening state of the cap after the cap is opened.

In our daily life, a bottle, which is mainly used to contain liquids, is a generic name for a narrow-necked bowl. It is usually a bottleneck of narrow shape as the diameter decreases gradually from the bottom of the tubular body to the upper end. It forms a bottle neck with an open mouth at its end. Therefore, the desired material can be injected and stored through the bottle opening, and the contents can be discharged from the inside of the bottle with the bottle opening facing downward.

On the other hand, the bottle opening of a common bottle is sealed with a bottle cap to improve reliability of storage / preservation and storage of the contents, and the bottle cap may be a crown, a cap, a cover, a lid, or a closure. Also called), it can be classified in various ways based on its material, shape, or use.

By the way, in the case of a general bottle cap, when the bottle is opened again and then repackaged, there is a problem that the user cannot confirm the open state of the bottle.

1 is an exploded perspective view of a general bottle 10 and a bottle cap 20, the bottle cap 20, for example, can be easily opened or closed with a small force, so rotatable type widely used for liquor, beverages, medicine bottles, etc. (twist-off type) A bottle cap 20 (hereinafter referred to as bottle cap 20) is shown.

As can be seen, the general bottle 10 is gradually reduced in diameter from the bottom of the tubular body 12 with a closed bottom to form a bottleneck 14 having a narrow shape, and the bottle opening 16 is opened at the end thereof. A first thread 18 is provided along the outer surface of the bottleneck 14 near the bottle opening 16. And the bottle cap 20 which opens or closes the bottle opening 16 of this bottle 10 shows the cap shape which covers the upper end part of the bottle neck 14 including the bottle opening 16, The inner surface which faces the bottleneck 14 is shown. A second thread 22 is thus provided.

Therefore, when the bottle cap 20 is covered with the bottle cap 20 and the bottle cap 20 is rotated in the tightening direction of the first and second threads 18 and 22, the bottle cap 16 is sealed and the reverse direction of the loosening is reversed. When the bottle cap 20 is rotated and separated, the bottle opening 16 is opened.

However, while the general bottle 10 and the bottle cap 20 described above show the advantages of being easily opened or closed, there are some disadvantages caused by this.

First, anyone can easily open the bottle cap 20, even if the poison or other toxic substances are stored in the bottle 10, children who do not know or lack of cognitive ability, such as open drinking and misuse of the misunderstanding of the content The risk is great.

Second, there is almost no change in appearance due to reclosing after the initial opening of the bottle cap 20, so that the forgery of the contents, for example, exchange of expensive liquor for cheap liquor, is large. Accordingly, a separate annular sleeve surrounding the bottleneck 14 is connected to the lower end of the bottle cap 20 by a bridge so that the sleeve is separated from the bottle cap 20 at the time of initial opening. Of Pilfer Proof) Although a stopper was introduced, it is also difficult to check whether it is opened since the sleeve separated from the bottle stopper 20 remains completely in the bottleneck 14.

Third, the common bottle cap 20 has a high possibility of inflow of external air, and even if a small amount of the contents are frequently leaked, there is a possibility of deterioration. Fourth, after the bottle cap 20 is opened, the contents can be easily replaced. There is a great possibility of counterfeiting.

Fourth, the general cap 20 is a problem that can not be confirmed separately after the opening of the bottle (10).

An object of the present invention is to provide a bottle cap after the cap is opened, the user can easily check the opening state of the cap.

One side of the present invention is a sealing cap coupled to the bottle side, the sealing cap is fitted to the inside, an inner cap formed with an open symbol for indicating the opening state of the bottle, and formed to surround the inner cap, the inner It provides a bottle cap including a middle cap formed with a window for exposing the open symbol by generating a cap and relative rotation, and an outer cap formed to surround the outer surface of the middle cap.

Here, the inner cap is open at the lower side, and the inner cap insertion portion into which the sealing cap is inserted into the inner side, and the open symbol are formed, and the symbol guide formed to be spaced apart from the inner cap insertion portion in a radial direction of the inner cap. It may include wealth.

The middle cap may further include a symbol support part disposed between the symbol guide part and the inner cap insertion part to support the symbol guide part.

In addition, at least one of the symbol guide portion or the middle cap may further include a one-way clutch for allowing the inner cap and the middle cap to rotate in one direction.

In addition, a stopper for limiting the relative rotation angle of the inner cap and the middle cap may be further disposed on at least one of the symbol guide portion or the middle cap.

Another aspect of the present invention is an inner cap formed with an open symbol indicating the opening state of the bottle, and the middle cap is formed to surround the inner cap, the window is formed to expose the open symbol by generating a relative rotation with the inner cap It provides a bottle cap comprising a.

Here, at least one of the inner cap and the middle cap may include a one-way clutch for generating relative rotation only in one direction, wherein the one-way clutch has a thread formed on the outer surface of the inner cap and the middle cap. It may be composed of a thread formed on the side.

And a stopper for limiting the relative rotation angle of the inner cap and the middle cap may be further disposed on at least one of the inner cap and the middle cap.

In particular, the inner cap may include an inner cap inserting portion formed in a cylindrical shape having a lower side open, the open symbol being formed, and a symbol guide portion spaced apart from the inner cap inserting portion at a predetermined interval in a radial direction of the inner cap. have.

The middle cap may further include a symbol support part disposed between the symbol guide part and the inner cap insertion part to support the symbol guide part.

Here, at least one of the symbol guide portion or the middle cap may further include a one-way clutch for allowing the inner cap and the middle cap to rotate in one direction.

In addition, a stopper for limiting the relative rotation angle of the inner cap and the middle cap may be further disposed on at least one of the symbol guide portion or the middle cap.

On the other hand, the open symbol may be formed to protrude toward the window.

The outer cap may further include an outer cap formed to surround the outer side of the middle cap, and the outer surface of the middle cap may be disposed to be wrapped inside / outside by the outer cap and the inner cap.

In addition, the outer surface of the middle cap is formed in the shape of a square, and further includes an outer cap formed to surround the outside of the middle cap, the inner surface of the outer cap of the square corresponding to the outer surface of the middle cap It may be formed in the form.

When the bottle cap according to the present invention is rotated for the first time by the user's external force, the open symbol formed on the inner cap is located in the window formed on the middle cap to be exposed, as well as to confirm the opening state of the bottle, and later the inner cap And since the relative rotation is prevented by the mutual interference of the middle cap has the effect of continuously notifying the user that the bottle is opened.

Figure 2 is an exploded perspective view showing a bottle and a cap according to an embodiment of the present invention.

As shown in FIG. 2, the bottle cap 100 according to the present embodiment is coupled to the discharge cap 50 installed at the inlet of the bottle 10.

The discharge stopper 50 may be configured to allow the contents of the inside to flow out to the outside, and to prevent the contents of the outside from flowing into the bottle 10. A thread 55 may be provided on an outer circumferential surface of the discharge stopper 50. ) Is formed and coupled to the bottle cap 100.

The cap 100 is an inner circumferential surface of the sealing cap (not shown) and the sealing cap is formed so as to be engaged with the screw thread 55 formed on the discharge cap 50, the inner cap is interposed and fixed to the sealing cap A cap 110, a middle cap 120 disposed to surround the inner cap 110 and relatively rotated with the inner cap 110 within a predetermined angle, and an outer cap 130 into which the middle cap 120 is fitted. It is configured to include).

The sealing cap has the same shape as the bottle cap 20 shown in FIG.

A hole-shaped window 125 is formed in the middle cap 120 so that a portion of the inner cap 110 is exposed, and a portion of the inner cap 110 is exposed through the window 125.

In particular, in the present embodiment, the open symbol 115 formed on the inner cap 110 is exposed through the relative rotation of the inner cap 110 and the middle cap 120 to facilitate the opening state of the bottle cap 100. You can check it.

In addition, the outer cap 130 is formed of a transparent material in this embodiment, the user can visually easily check the open symbol 115.

Looking at each configuration of the present invention in more detail as follows.

3 is an upper perspective view of the inner cap illustrated in FIG. 2, FIG. 4 is a lower perspective view of the inner cap illustrated in FIG. 2, and FIG. 5 is a cross-sectional view of the inner cap illustrated in FIG. 2.

As shown in Figures 3 to 5, the inner cap 110 is formed in a cylindrical shape with the upper side closed, the inner cap insertion portion 112 is inserted into the sealing cap is fixed and the inner cap insertion portion A symbol guide part 114 disposed radially spaced apart from the 112 in a radial direction, an open symbol 115 protruding outward from the symbol guide part 114, the symbol guide part 114, and It includes an inner cap base 111 for connecting the inner cap inserting portion 112.

The inner cap base 111 extends in a radial direction from a lower edge of the inner cap inserting portion 112, and the symbol guide portion 114 protrudes upward from an upper surface of the inner cap base 111. Is formed.

Here, the symbol guide portion 114 and the inner cap insertion portion 112 are formed with a spaced groove 113 spaced a predetermined interval.

The symbol guide part 114 may include a symbol part 116 on which the open symbol 115 is formed, and a guide part spaced apart by a predetermined interval between the symbol part 116 without forming the open symbol 115. 117).

Here, the slit 118 formed between the symbol portion 116 and the guide portion 117 is formed to prevent mutual interference when the symbol portion 116 is deflected.

In particular, in the present exemplary embodiment, the guide part 117 is formed between the symbol parts 116. However, in operation, even if only the slit 118 is formed between the symbol part 116 without the guide part 117. There is no problem.

The symbol guide 114 has a one-way clutch 119 for one-way relative rotation with the middle cap 120. The one-way clutch 119 is a mechanism for rotating only in one direction when the inner cap 110 and the middle cap 120 is relatively rotated, the embodiment is a screw thread formed in the symbol guide portion 114 119a and a screw thread (119b of FIG. 7) formed on the inner surface of the middle cap 120.

In this embodiment, the one-way clutch 119 is formed so that the middle cap 120 may be rotated in a counterclockwise direction.

6 is a top perspective view of the middle cap shown in FIG. 2, FIG. 7 is a bottom perspective view of the middle cap shown in FIG. 2, and FIG. 8 is a cross-sectional view of the middle cap shown in FIG. 2.

6 to 8, the lower side is formed to be opened to surround the inner cap 110, and the window 125 is formed to be opened to selectively expose the open symbol 115.

The middle cap 120 has a cylindrical middle cap body 122 of which the upper side is closed and the lower side is opened, and protrudes downwardly from the inner upper side of the middle cap body 122 to the spaced groove 113. The symbol support unit 124 is disposed, the window 125 disposed to penetrate the middle cap body 122, and the thread 119a of the one-way clutch 119 disposed on the inner surface of the middle cap body 122. ) And a thread 119b for generating mutual interference.

The symbol support part 124 is disposed inside the outer circumference of the middle cap body 122 and is spaced apart from the inner circumferential surface of the middle cap body 122 by a predetermined distance.

The symbol support part 124 is inserted into a spaced groove 113 formed to be spaced apart from the inner cap inserting part 112 and the symbol guide part 114 to support the symbol guide part 114. In particular, the symbol support part 124 is located between the guide part 117 and the inner cap insertion part 112 before the inner rotation of the inner cap 110 and the middle cap 120 and the symbol after the relative rotation. Located between the portion 116 and the inner cap inserting portion 112 to support the symbol portion 116.

To this end, the thickness of one side 124a of the symbol support part 124 is formed to be thin to avoid interference with the symbol guide part 114, and the thickness of the other side 124b is made thick to push and support the symbol part 116. .

Here, one side 124a of the symbol supporter 124 is a rotational direction side with respect to the axis center of the middle cap 120, and the other side 124b is a side opposite to the rotation. Thus, in this embodiment, the one side 124a is disposed on the counterclockwise side and the other side 124b is disposed on the clockwise side.

Next, a stopper groove 126 is formed in the inner surface of the middle cap body 122 in a circumferential direction as a stopper for blocking relative rotation of the inner cap 110, and in the stopper groove 126. The thread 119b for the one-way clutch 119 is formed.

In particular, the stopper groove 126 is to prevent the middle cap 120 from being rotated any more when the middle cap 120 is rotated relative to a predetermined angle, and the stage 126a of the stopper groove 126 and The threads 119a of the inner cap 110 cause mutual jamming. Here, the stopper is formed in the shape of a groove in the present embodiment, but may be applied in various forms that may generate mutual interference with the inner cap 110.

Thus, the relative rotation is generated by the one-way clutch 119 to a predetermined angle when the inner cap 110 and the middle cap 120 rotates relative, but above a predetermined angle, the thread 119a of the inner cap 110 is rotated. ) Is caught by the end 126a of the stopper groove 126. When the user rotates the predetermined angle or more, the middle cap 120 is rotated by applying an external force to the inner cap 110. On the other hand, when the user rotates in the opposite direction, the interlock is generated by the one-way clutch 119, and the inner cap 110 and the middle cap 120 are rotated together without generating a relative rotation.

On the other hand, when the relative rotation of the middle cap 120, the window 125 is rotated with the middle cap 120, the relative rotation is stopped at the position of the open symbol 115, the open symbol 115 ) Projects into the window 125. The symbol unit 116 is supported by the symbol support unit 124 so as not to be pushed out of the window 125 again.

On the other hand, the outer cap 130 according to the present embodiment is formed of a transparent material can be confirmed by the user when the open symbol 115 is fitted to the window 125. On the other hand, before the relative rotation of the middle cap 120 and the inner cap 110 is generated, the open symbol 115 is not exposed through the window 125 so that the user can check the opening state of the bottle. .

9 is a perspective view showing a state before opening the bottle cap according to an embodiment of the present invention, Figure 10 is a perspective view showing a state after opening the bottle cap according to an embodiment of the present invention, Figure 11 is in Figure 9 12 is a cross-sectional view taken along the cutting line A-A ', and FIG. 12 is a cross-sectional view taken along the cutting line B-B' of FIG. 10.

First, in the assembled state, the bottle cap 100 has a middle cap 120 disposed inside the outer cap 130, and an inner cap 110 disposed inside the middle cap 120. The sealing cap not shown is disposed inside the 110.

Here, the outer cap 130 and the middle cap 120 is formed in an angular form in order to prevent relative rotation or slip between each other, in the present embodiment is formed in an octagonal shape.

On the other hand, since the inner cap 110 has to be rotated relative to the middle cap 120 by a predetermined angle, the overall shape is formed in a cylindrical shape.

Thus, the outer cap 130 and the middle cap 120 is in a state in which the outer cap 130 and the middle cap 120 are fitted to prevent relative rotation or slip from occurring, and the outer cap 130 and the middle cap 120 are The contact surface is formed with a groove or a projection for this purpose.

In addition, the middle cap 120 and the inner cap 110 may be rotated in a predetermined angle relative to the circumferential direction, and grooves or protrusions are formed so as not to slip or separate in the axial direction.

In addition, the lower end 120a of the middle cap 120 is disposed to be wrapped by the inner cap 110 and the outer cap 130 so that the position of the middle cap 120 cannot be artificially manipulated.

On the other hand, before the bottle cap 100 is opened, the open symbol 115 is disposed between the window 125 on the basis of the flat cross section of the bottle cap 100.

Here, the symbol portion 116 having the open symbol 115 is pushed to the inner surface of the middle cap 120 and the bending deformation occurs to the axis center side, and the symbol support portion 124 is the guide portion 117 and It is located between the inner cap inserting portion (112).

Next, when the user rotates the outer cap 130, the outer cap 130 and the middle cap 120 is rotated together, a predetermined angle between the middle cap 120 and the inner cap 110. Relative rotation of is generated.

Here, when the relative rotation occurs, the one-way clutch 119 is rotated while generating a rare sound in the counterclockwise direction, but the inner cap 110 and the middle cap by the mutual locking in the clockwise direction The relative rotation of 120 does not occur.

When the middle cap 120 is rotated by a predetermined angle and the thread 119a of the inner cap 110 contacts the end 126a formed in the stopper groove 126 of the middle cap 120, the middle cap ( 120 and the relative rotation of the inner cap 110 is stopped.

After the relative rotation is stopped, the inner cap 110, the middle cap 120, and the outer cap 130 are integrally rotated regardless of which direction the user exerts an external force.

That is, when the user tries to rotate by applying an external force in a counterclockwise direction, the inner cap 110 and the middle cap 120 are interlocked by the threads 119a and 119b which are the one-way clutch 119. Relative rotation is prevented.

In addition, when the user tries to rotate by applying an external force in a counterclockwise direction, the inner cap 110 and the middle cap 120 by the interlocking of the thread 119a of the inner cap 110 and the stopper groove 126. Relative rotation is prevented.

On the other hand, when the relative rotation of the inner cap 110 and the middle cap 120 is completed, the open symbol 115 is disposed at the position of the window 125, the bending deformation of the symbol portion 116 is restored It will be fitted to the window 125.

In addition, the symbol support portion 124, which was positioned between the guide portion 117 and the inner cap insertion portion 112 during the relative rotation, is located between the symbol portion 116 and the inner cap insertion portion 112. Positioned to prevent the symbol portion 116 from escaping from the window 125.

So when the bottle cap 100 according to the present embodiment is rotated for the first time by an external force of the user, the open symbol 115 formed in the inner cap 110 is located in the window 125 to check the opening state of the bottle. In addition, since the relative rotation is prevented by mutual interference of the inner cap 110 and the middle cap 120 in the future, it is possible to continuously inform the user that the bottle is opened.

On the other hand, in the present embodiment, the open symbol 115 and the window 125 indicating the opening state of the bottle is located on the side of the bottle cap 100, unlike the open symbol 115 and the window 125 is a bottle cap It may be located on the upper side.

13 is an exploded perspective view showing a bottle cap according to another embodiment of the present invention, Figure 14 is a side view of the middle cap shown in Figure 13, Figure 15 is a bottom view of the middle cap shown in Figure 13, Figure 16 13 is a side view of the inner cap shown in FIG. 13, FIG. 17 is a bottom view of the inner cap shown in FIG. 13, FIG. 18 is a perspective view before operation of the cap according to the present embodiment, and FIG. 19 is shown in FIG. 18. Perspective view after operation of the cap.

As shown in FIGS. 13 to 19, the cap 200 according to the present embodiment is formed by separating the outer cap 130 into two parts, and then bonded by ultrasonic welding.

Thus, the outer cap 130 is coupled to the upper outer cap 132 and the upper outer cap 132 surrounding the side and the upper portion of the middle cap 220, and also to surround the lower side of the middle cap 220 A lower outer cap 134 is formed.

The lower outer cap 134 is hollow is formed so that the sealing cap can be inserted.

In addition, since the upper outer cap 132 and the lower outer cap 134 are integrally wrapped around the middle cap 220 into which the inner cap 210 is inserted, the inner cap 210 is moved relative to the inner cap 210. It is not possible to restore it to its original position.

The middle cap 220 is formed with a window 225 through which the open symbol 215 is exposed, and the window 225 is formed in one embodiment in this embodiment.

In addition, a symbol support part 224 is formed to protrude downward from an inner upper side of the middle cap 220, and a locking protrusion 222 for generating mutual interference with the inner cap 210 is formed on an inner upper side of the middle cap 220. It protrudes and is formed.

On the other hand, the inner cap 210 is formed in a cylindrical shape of the lower side, the locking groove 212 for generating mutual interference with the locking projection 222 is formed on the upper side.

And the one-way clutch 219 is formed on the inner cap 210 and the middle cap 220 for one-way relative rotation of the inner cap 210 and the middle cap 220, the thread ( 119a) and 119b.

In the present embodiment, the symbol portion 216 having the open symbol 215 is formed in the horizontal direction.

In this embodiment, the symbol part 216 is formed in one embodiment, and the symbol support part 224 in which the symbol part 216 is supported is formed in two places.

Particularly, when the inner cap 210 and the middle cap 220 are rotated relative to each other, the symbol portion 216 is bent in a horizontal direction, and thus the relative rotation is performed, so that the operation is smoother.

In addition, since the number of the symbol support parts 224 and the number of the open symbols 215 are reduced, there is an additional effect of reducing the material cost.

Hereinafter, the rest of the configuration and operation process is the same as the above embodiment, detailed description thereof will be omitted.

On the other hand, the present invention is not limited by the embodiments and drawings presented herein, it can be applied by those skilled in the art within the scope of the technical spirit of the present invention is protected.

1 is an exploded perspective view of a common bottle and cap

Figure 2 is an exploded perspective view showing a bottle and a cap according to an embodiment of the present invention

3 is an upper perspective view of the inner cap shown in FIG.

4 is a bottom perspective view of the inner cap shown in FIG.

5 is a cross-sectional view of the inner cap shown in FIG.

6 is a top perspective view of the middle cap shown in FIG.

7 is a bottom perspective view of the middle cap shown in FIG.

8 is a cross-sectional view of the middle cap shown in FIG.

9 is a perspective view showing a state before opening the bottle cap according to an embodiment of the present invention

10 is a perspective view showing a state after opening the bottle cap according to an embodiment of the present invention

FIG. 11 is a cross-sectional view taken along a cutting line A-A 'shown in FIG. 9

FIG. 12 is a cross-sectional view taken along the line BB ′ of FIG. 10.

Figure 13 is an exploded perspective view showing a bottle cap according to another embodiment of the present invention

14 is a side view of the middle cap shown in FIG.

15 is a bottom view of the middle cap shown in FIG.

16 is a side view of the inner cap shown in FIG.

17 is a bottom view of the inner cap shown in FIG.

18 is a perspective view before operation of the cap according to the present embodiment

19 is a perspective view after the operation of the cap shown in FIG. 18

<Brief description of the symbols for the main parts of the drawings>

10: bottle 50: discharge cap

100: bottle cap 110: inner cap

112: inner cap insertion portion 113: insertion groove

114: symbol guide unit 115: open symbol

116: symbol portion 117: guide portion

118: slit 119: one-way clutch

119a: Thread of inner cap 119b: Thread of middle cap

120: middle cap 122: middle cap body

124: symbol support 124a: one side of the symbol support

124b: other side of symbol support 125: window

126: stopper groove 126: stopper groove

130: outer cap 132: upper outer cap

134: lower outer cap 200: bottle cap

210: inner cap 215: open symbol

220: middle cap 225: window

Claims (16)

Sealing cap coupled to the bottle side, The inner cap is inserted into the inner cap, and the inner cap formed with an open symbol for indicating the opening state of the bottle, A middle cap formed to surround the inner cap and having a window for exposing the open symbol by generating a relative rotation with the inner cap; Bottle cap including an outer cap formed to surround the outer surface of the middle cap. The method according to claim 1, The inner cap An inner cap insertion part having a lower side opened to insert the sealing cap inward; The open cap is formed, the cap cap including a symbol guide portion formed spaced apart from the inner cap inserting portion in a radial direction of the inner cap. The method according to claim 2, The middle cap may further include a symbol support portion disposed between the symbol guide portion and the inner cap insertion portion to support the symbol guide portion. The method according to claim 2, At least one of the symbol guide portion or the middle cap further comprises a one-way clutch for allowing the inner cap and the middle cap to rotate in one direction. The method according to claim 2, At least one of the symbol guide portion or the middle cap cap stopper is further disposed to limit the relative rotation angle of the inner cap and the middle cap. Inner cap formed with an open symbol indicating the opening state of the bottle, A bottle cap including a middle cap formed to surround the inner cap and having a window for exposing the open symbol by generating a relative rotation with the inner cap. The method according to claim 6, At least one of the inner cap and the middle cap bottle cap including a one-way clutch for generating a relative rotation only in one direction. The method according to claim 7, The one-way clutch is a bottle cap consisting of a screw thread formed on the outer surface of the inner cap and the screw thread formed on the inner surface of the middle cap. The method according to claim 6, At least one of the inner cap and the middle cap cap stopper is further disposed to limit the relative rotation angle of the inner cap and the middle cap. The method according to claim 6, The inner cap An inner cap insertion portion formed in a cylindrical shape with an open lower side, The open cap is formed, the cap cap including a symbol guide portion formed spaced apart from the inner cap inserting portion in a radial direction of the inner cap. The method according to claim 10, The middle cap And a symbol support part disposed between the symbol guide part and the inner cap insertion part to support the symbol guide part. The method according to claim 10, At least one of the symbol guide portion or the middle cap further comprises a one-way clutch for allowing the inner cap and the middle cap to rotate in one direction. The method according to claim 10, At least one of the symbol guide portion or the middle cap cap stopper is further disposed to limit the relative rotation angle of the inner cap and the middle cap. The method according to claim 6, The open symbol cap is formed to protrude toward the window. The method according to claim 6, It is configured to further include an outer cap formed to surround the outside of the middle cap, The outer surface of the middle cap is a bottle cap disposed to be wrapped inside / outside by the outer cap and the inner cap. The method according to claim 6, The outer surface of the middle cap is formed in the shape of a square, Further comprising an outer cap formed to surround the outside of the middle cap, The inner surface of the outer cap is a bottle cap formed in the shape of a square corresponding to the outer surface of the middle cap.

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