JP3058168U - Negative pressure resistant two-stage sealed cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a negative pressure resistant two-stage sealing cap which has a two-stage sealing effect, and in which a locking fin of an anti-theft ring is not easily broken during sealing. SOLUTION: A cap body having first and second sealing means is provided on an inner upper surface, and the first sealing means has a portion corresponding to a position slightly smaller than the inner diameter of the bottle mouth on the inner upper surface of the cap body facing downward. A sealing edge extending in the axial direction, and a sealing edge piece having an open end at the lower end of the sealing edge extending outward and upward; the second sealing means is an inner wall of the cap body. The upper end of the cap is an elastic piece extending horizontally, an anti-theft ring is provided around the opening of the cap main body, and a plurality of cross-linking points are formed between the anti-theft ring and the cap main body by a non-sewing cut. A plurality of locking fins are provided on the inner periphery of the anti-theft ring, and a connecting wall is connected between each locking fin.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to the structure of a bottle cap, and more particularly, an elastic seal structure is provided on an inner upper surface of the cap to prevent gas from passing between the bottle mouth and the cap, and to provide a cap at the bottom end. And a strong locking fin is provided in the anti-theft ring.

[0002]

[Prior art]

 As shown in FIGS. 1 and 2, a conventional cap is provided with a plurality of threads in an annular shape on the inner periphery of the cap, and is combined with a thread provided on a bottle neck, and one cap is provided below the cap. An anti-theft ring is provided, and sealing means is provided at the upper end of the inner surface of the cap.

[0003] The sealing means is an elastic sealing means formed by processing a hot melt resin. The sealing means is provided on the inner upper surface after the cap is formed. The installation of the elastic sealing means is completed by the secondary processing, and the cost is reduced. But the sealing effect was not perfect. That is, it is difficult to completely and tightly connect the flat sealing means and the upper end of the horizontal bottle mouth, and a gap is easily generated. Particularly, when a beverage having a gas pressure is contained in the bottle, the gas in the bottle is sealed. Even though it was easy to leak out from the slight gap between the means and the bottle mouth, and even if it could not be confirmed with the naked eye, the gas of the beverage was washed away over time, and the flavor and the quality of the beverage sometimes deteriorated. If a high-temperature liquid of 85 degrees Celsius or more is put into the bottle, the liquid will generate a negative pressure inside the bottle after cooling, and air larger than the pressure inside the bottle outside the bottle will cause a slight increase in the sealing means and the bottle mouth. There was a case where food entered into the bottle through a small gap and the quality of food was impaired.

The anti-theft ring provided on the conventional cap is provided integrally with the periphery of the opening end of the cap body, and is a ring having an inner diameter smaller than the inner diameter of the cap body. Stripes are provided alternately with a plurality of holes provided by a cutting method between the main bodies, and a plurality of locking fins are separately provided on the inner surface of the anti-theft ring. The fins are locked on the bottom of the bottle mouth. The thickness of the anti-theft ring corresponds to the thickness of the wall of the cap, but when the lid is attached to the bottle mouth during manufacturing, the anti-theft ring is expanded by the downward pressure of the lid and the bottle mouth. The anti-theft ring easily ruptures under pressure and because the anti-theft ring is difficult to pass through the bottle mouth threads. In addition, the above-mentioned plurality of holes provided by the cutting method form a discontinuous surface, and when the cap is pushed downward, the strip-like portion between the plurality of holes is similarly subjected to pressure to crack. The phenomenon was easy to occur.

[0005]

[Problems to be solved by the invention]

 An object of the present invention is to provide a kind of negative pressure resistant two-stage sealing cap, which closes the gap between the bottle mouth and the cap body by the two-stage sealing structure, and achieves a two-stage sealing effect, and An object of the present invention is to prevent the outside air from entering into the bottle due to the negative pressure inside the bottle by providing a seal structure having a negative pressure resistance function.

Another object of the present invention is to increase the toughness of the locking fin of the anti-theft ring with respect to the negative pressure resistant two-stage sealing cap so that the locking fin is less likely to be torn. You.

[0007]

[Means for Solving the Problems]

 The invention according to claim 1 is a sealed cap having a cap body 10 and an anti-theft ring 30 provided on the periphery of the opening, and having a thread 11 provided on the inner periphery of the cap body 10. A first sealing means 13 and a second sealing means 14 are provided on the inner upper surface of the cap 10, and the first sealing means 13 has a sealing edge 131 extending downward from the inner upper surface of the cap body 10 along the axial direction. An open end of the seal rim 131 is bent outward and upward in an arc shape to provide a seal side piece 132, and the second sealing means 14 is disposed laterally from an inner side wall near an upper end of the cap body 10. A plurality of seamless cutting lines 301 are provided in an annular shape between the anti-theft ring 30 and the cap body 10, and a bridge point is provided between each one of the seamless cutting lines 301. A plurality of locking fins 32 extending obliquely are provided on the inner edge surface of the anti-theft ring 30, and a connecting wall 321 is provided on the inner edge surface of the anti-theft ring 30 between each one locking fin 32. Is extended, the connecting wall 321 is connected to the side portions of two adjacent locking fins 32, and has a negative pressure resistant two-stage sealing cap characterized by having the above configuration.

The invention according to claim 2 is characterized in that the axial length of the sealing rim 131 is 0.5 to 2 times the screw distance of the thread of the cap body 10. It has a two-stage negative pressure resistant sealed cap.

[0009]

[Embodiment of the invention]

 The negative pressure resistant two-stage sealing cap of the present invention has a cap body having first and second sealing means on the inner upper surface, and the first sealing means is slightly smaller than the inner diameter of the bottle mouth on the inner upper surface of the cap body. A seal edge formed by extending a portion corresponding to the position downward along the axial direction, and a seal side piece having an open end at the lower end of the seal edge extended outward and upward. (2) The sealing means is an elastic piece formed by extending horizontally near the upper end of the inner wall of the cap main body. An anti-theft ring is provided on the periphery of the opening of the cap main body. A plurality of cross-linking points are formed by a non-sewing cut therebetween, a plurality of locking fins are provided on the inner periphery of the anti-theft ring, and a connecting wall is connected between each one of the locking fins. Due to the structure, the cap has a two-stage sealing effect And and Kakaritomehire is easily torn Shinano casting during attachment to the bottle mouth of the cap.

With the above structure, when the cap body is positioned at the bottle mouth, the first sealing means and the second sealing means tightly contact the inner and outer edges of the bottle mouth by their own elastic recovery force. Contact, achieve a two-stage sealing effect.

[0011]

【Example】

 Please refer to FIGS. The negative pressure resistant two-stage sealing cap of the present invention includes a cap body 10 and an anti-theft ring 30 provided integrally with the opening peripheral wall.

A screw thread 11 is provided on the inner periphery of the cap body 10, and the screw thread 12 is to be screwed with a male screw of a bottle mouth 21 of the bottle body 20.

A first sealing means 13 and a second sealing means 14 are provided on the inner upper surface of the cap body 10. The first sealing means 13 has a sealing edge 131 extending downward from the inner upper surface of the cap body 10 along the axial direction, and the axial length (L) of the sealing edge 131 is the thread of the cap body 10. This corresponds to 0.5 to 2 times the distance of the eleventh screw. The open end of the seal rim 131 is bent outward and upward in an arc shape to form a seal side piece 132. Both the seal edge 131 and the seal side piece 132 have a predetermined elasticity. The material thickness of the seal side piece 132 is smaller than the thickness of the seal edge 131, and the included angle (θ) between the seal edge 131 and the seal side piece 132 has an arc shape.

The second sealing means 14 is an elastic piece 141 extending laterally from an inner wall near the upper end of the cap body 10, and an open end of the elastic piece 141 is a stationary member of the sealing side piece 132. Located above the end of the state. The elastic piece 141 also has a predetermined elasticity.

A plurality of seamless cutting lines 301 are provided annularly between the anti-theft ring 30 and the cap body 10, and a bridging point 31 is formed between each of the seamless cutting lines 301. The inner diameter of the anti-theft ring 30 is slightly larger than the inner diameter of the cap body 10, and its thickness is smaller than the thickness of the cap body 10, and the inner surface of the opening edge extends obliquely upward to form a plurality of locking fins 32. Is formed.

A connecting wall 321 extends on the inner edge surface of the anti-theft ring 30 between each one of the locking fins 32, and the connecting wall 321 connects to the sides of two adjacent locking fins 32, As a result, a form is formed in which the locking fins 32 are connected in series at their roots.

With the above structure, when the cap of the present invention is attached to the bottle mouth, that is, when the cap body 10 is coupled to the bottle mouth 21 in the axial direction downward, the lip of the bottle mouth 21 First, the seal side piece 132 of the first sealing means 13 is pressed, and the seal side piece 132 is pressed in the direction of the seal edge 131. As a result, the included angle (θ) is reduced, and the outwardly facing corner portion of the bottle mouth 21 presses the elastic piece 141 of the second sealing means 14 from bottom to top. Is pressed against the upper surface of the inside of the cap body 10. In addition, the elastic piece 141 generates an elastic change along the outer edge of the bottle opening 21 and comes into close contact with the bottle opening 21 portion. When the cap body 10 and the bottle mouth 21 are positioned after rotation, the first seal means 13 and the second seal means 14 abut against the inner and outer edge surfaces of the bottle mouth 21 by their own elastic recovery force, Thus, a two-stage sealing effect is achieved.

The locking fins 32 are connected to the inner edge of the cap body 10 at their roots, and are connected to each other via a connecting wall 321 to increase the connection length of the cap body 10. When the cap body 10 is pressed by the bottle opening 21 toward the inner rim at the time of sealing, or when the cap body 10 is removed from the mold at the time of manufacturing and receives an outward force, the response is maintained by each locking. The fin 32 and the connecting wall 321 are distributed at the roots connected in series. That is, since the connection strength of the root of the locking fin 32 is increased, the locking fin 32 is not easily torn. After the cap is attached to the bottle mouth, the upper part of each one of the locking fins 32 is pressed against the bottom end of the threaded portion of the bottle mouth 21, and when the cap is turned and opened, the locking fins 32 are opened. Provides a good locking effect, and the bridging point 31 is torn by rotation of the cap body 10, and can be quickly and easily opened.

In addition to the above effects, the present invention has the following excellent points. 1. The present invention has a two-stage sealing effect. That is, the gas in the bottle body 20 provides the first sealing effect by the first sealing means 13 and the second sealing effect by which the passage between the bottle mouth and the outside world is blocked by the second sealing means 14. I will provide a. In this way, the cap can achieve a thorough sealing. 2. The seal structure has a negative pressure resistance function. That is, when the temperature of the food in the bottle drops and a negative pressure is formed in the bottle, the air outside the first sealing means 13 and the outside of the bottle 20 is prevented from entering the bottle body 20. 3. As shown in FIG. 6, the first sealing means 13 and the second sealing means 14 can be applied to a bottle body having a slightly different inner diameter of the bottle mouth, and the distance between the two roots is the same as the structure thickness of a general bottle mouth. Manufactured by For a relatively thick bottle mouth structure, the bottle mouth presses the seal edge 131 inward, and the bottle mouth is smoothly located between the two sealing means. Generally, the tolerance of the bottle mouth thickness is about 0.2 mm, but the present invention can be applied even if there is a difference of 1.5 mm. 4. Since the axial length (L) of the sealing edge 131 of the first sealing means 13 is 0.5 to 2 times the distance of the screw of the screw thread 11 of the cap body 10, the cap body 10 can be kept within 270 degrees. When rotated, the first sealing means 13 does not detach from the inner edge of the bottle opening 21 and is in the effective sealing position, so that it is possible to achieve a sealing effect and an effect of safely holding food. 5. The seamless cutting line 301 separates the structure of the anti-theft ring 30 and the cap body 10, but the ring is in contact with the annular edge of the anti-theft ring 30 and the cap body 10 even if a downward pressure is applied when the lid is attached. The load on the point 31 can be reduced to reduce the reduction in tearing of the cross-linking point 31 during sealing.

[0020]

[Effect of the invention]

 According to the present invention, the above structure has a two-stage sealing effect, and the locking fins of the anti-theft ring are not easily torn at the time of sealing.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional cap.

FIG. 2 is a cross-sectional view of a conventional cap combined with a bottle mouth.

FIG. 3 is a perspective view of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a cross-sectional view of the combination of the present invention and a bottle mouth.

FIG. 6 is another combined sectional view of the present invention and a bottle mouth.

FIG. 7 is a perspective view of the present invention when opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cap main body 11 Thread 13 First seal means 131 Seal edge 132 Seal side piece L-axis length θ Included angle 14 Second seal means 141 Elastic piece 20 Bottle body 21 Bottle mouth 30 Anti-theft ring 31 Bridge point 32 Locking fin 321 Connected Wall 301 seamless cut line

Claims (2)

[Utility model registration claims] An anti-theft ring provided on a periphery of an opening of a cap main body, the cap main body being provided with an anti-theft ring.
A first sealing means 13 and a second sealing means 14 are provided on the inner upper surface of the cap body 10;
Has a sealing edge 131 extending downward from the inner upper surface of the cap body 10 along the axial direction.
1 is bent outwardly and upwardly in an arc shape to provide a seal side piece 132, and the second sealing means 1
4 includes an elastic piece 141 extending laterally from an inner wall near the upper end of the cap body 10.
0 and the cap body 10, a plurality of seamless cutting lines 301 are provided in an annular shape, and a bridging point 31 is formed between each of the seamless cutting lines 301. A plurality of locking fins 32 are provided, and a connecting wall 321 is extended on an inner edge surface of the anti-theft ring 30 between each one of the locking fins 32 so that the connecting wall 321 is adjacent to two locking fins. A negative pressure resistant two-stage sealing cap which is connected to the side of the fin 32 and has the above configuration. 2. The two-stage negative pressure resistance according to claim 1, wherein the axial length of the sealing edge 131 is 0.5 to 2 times the distance of the thread of the thread of the cap body 10. Type sealing cap.