JP3048735U - Bottle lid - Google Patents

Abstract

(57) [Summary] [Problem] To provide a bottle cover which has a high sealing function and is convenient for separating and collecting the bottle body and the bottle cover. SOLUTION: A first seal structure and a second seal structure are integrally provided on an inner upper surface of a lid, and a connecting portion is formed along an end portion of the lid and a burglarproof ring provided below the lid. One guide groove is provided in the edge part, and the other part of the opposite end of the cover and the anti-theft ring is connected by a bridge provided at an equal distance.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a convenient and recyclable bottle lid made of plastic and having a high sealing effect.

[0002]

[Prior art]

 The bottle cover having the anti-theft and leak-proof function has a female screw formed on the inside of the cover so as to be screwed and positioned with the male screw of the bottle. An elastic seal pad is attached to the inner surface of the.

[0003] The structure of the seal pad is as shown in FIG. 1, which is formed by injecting hot melt plastic into the upper surface of the bottle body after forming the bottle cover and performing secondary processing to cover the upper surface of the cover body. ing. However, this seal pad could not be formed without the secondary processing, the production cost was extra, and the seal effect was not ideal. That is, in order to achieve a sealing effect by contact between the seal pad and the upper end surface of the bottle mouth, the bottle cover must be tightly fastened and tightly joined together. In order to make it easier for consumers to open, the seal pad and bottle opening cannot be tightly joined together, so that the irregularities formed during molding on the bottle opening are tightly joined to the seal pad. As a result, it is easy for gas to enter the bottle, especially when carbonated beverages are placed in the bottle, the gas in the bottle tends to leak out from between the seal pad and the bottle mouth. In some cases, the flavor of the beverage was lost, and in severe cases, the quality of the beverage deteriorated.

FIG. 2 shows another seal pad structure of a well-known bottle lid. That is, a cylinder having an outer diameter slightly smaller than the inner diameter of the bottle mouth is formed integrally with the upper end in the bottle lid, and the outer diameter of the bottom end of the cylinder is slightly larger than the outer diameter of the upper end of the cylinder. The cylindrical body is made to expand gradually from top to bottom, and an elastic ring is formed by secondary processing on the outer periphery of the middle part of the cylindrical body. The periphery is tightly pressed by the outer periphery of the cylindrical portion and the elastic ring. However, this type of leak-proof structure does not solve the problem that secondary processing is required, and also has a poor sealing effect. When a beverage having gas pressure is sealed, gas is generated between the elastic ring and the inner periphery of the bottle mouth. It was easy to leak through a small gap.

In addition, when a high-temperature beverage of 85 ° C. or more is placed in a bottle, negative pressure is generated in the bottle as the temperature of the beverage decreases, but a well-known seal pad cannot be tightly connected to the bottle mouth. However, the air with higher pressure entered the bottle through a small gap, causing the quality of the beverage to deteriorate.

[0006] Known burglar rings also have disadvantages and need to be improved. That is, the bridging point is continuously provided in an annular shape between the lid and the anti-theft ring, and is locked to the bottom end of the bottle mouth, so that the rotational force when opening the bottle lid forms a torque at the bridging point. As a result, cracks were generated at the bridging points, the lid and the antitheft ring were separated, and the antitheft ring was likely to remain outside the bottle opening. However, at present, in order to separate and collect garbage for environmental protection, if a burglar ring made of plastic is left in a polypropylene bottle (pet bottle), the burglar ring must first be collected before the bottle is collected. Need to be cut, increasing the burden of sorting and collection. At present, the idea of separating garbage by material is not yet widely used, and plastic bottles are collected together with a plastic burglar ring on top of them. The burden was brought.

[0007] In addition, in order to provide a convenient cover and prevent cracking of the antitheft ring, the trader usually reduces the thickness of the antitheft ring to increase its toughness, and also increases the inner diameter of the antitheft ring. When the lid is made slightly larger than the outside diameter of the bottle mouth, the anti-theft ring is easy to pass through the screw part of the bottle mouth, and the anti-theft ring is locked to the bottle mouth by the locking part. However, such a design sometimes caused a gap between the inner periphery of the antitheft ring and the outer periphery of the bottle mouth.

[0008]

[Problems to be solved by the invention]

 The present invention has been made to overcome the drawbacks of the well-known bottle lid provided with a sealing pad and a burglarproof ring, that is, the present invention provides a bottle lid that can completely prevent leakage of liquid and gas in the bottle and can prevent gas leakage. Can be prevented from entering the bottle, the rate of destruction of the lid when the lid is attached can be reduced, and when opening the lid, the anti-theft ring is separated from the bottle mouth with the lid and convenient for separating and collecting the bottle lid The challenge is to make things easier.

[0009]

[Means for Solving the Problems]

 The invention of claim 1 includes one lid 10 having an inner periphery with a screw 11 which can be screwed with a male screw around the bottle opening 21 of the bottle 20, and a security ring 40 is formed below the lid 10. A first seal structure 13 and a second seal structure 14 are integrally formed on the upper inside of the lid 10, and the first seal structure 13 is attached to the inner upper surface of the lid 10. A cylindrical portion 131 formed by extending a position slightly smaller than the inner periphery of the bottle opening 21 downward in the axial direction, and an open end of the cylindrical portion 131 is bent outward in a radial direction in an arc shape to form the cylindrical portion. The cylindrical portion 131 and the flange 132 are both elastic, including a flange 132 formed at a predetermined angle with the portion 131, and the second seal structure 14 Extend radially inward above the top of the screw The anti-theft ring 40 is formed integrally with the bottom end of the lid 10, and a connecting portion 41 is formed along the lower end of the anti-theft ring 40 and the lid 10. A plurality of locking edges 34, 42 are formed at intervals at positions corresponding to the lid 10 and the remaining end of the antitheft ring 40, and a concave connection between the locking edges 34, 42 is formed. Grooves 35 and 43 are formed, and a bridging portion 44 is extended into the connecting groove 43 of the antitheft ring 40 and connected to the connecting groove 35 of the lid 10. One gap 45 is formed between the locking edges 34 and 42 to be engaged, and an oblique guide groove 46 is formed at the edge of the coupling portion 41 of the antitheft ring 40, and the guide groove 46 rotates to close the lid 10. The guide groove 46 has a closed shape with a sharp end at the bottom. One connecting point 461 is formed in the antitheft ring 40 below the guide groove 46. With the above structure, when the lid 10 and the bottle opening 21 are screwed, the flange 132 is elastically connected to the bottle opening 21. The bottom of the elastic piece 141 is in close contact with the periphery of the upper end of the bottle mouth, and the upper portion of the elastic piece 141 is pushed up by the bottle mouth 21 to tightly close the inner top surface of the lid 10 and the bottle mouth. 21 between the upper end surfaces, thus achieving a two-stage sealing effect, reducing the damage of the antitheft ring 40 when closing the bottle lid, and connecting the antitheft ring 40 and the lid 10 together when opening the bottle lid. It is designed to be detached from the bottle mouth and has a bottle lid with the above configuration.

According to the invention of claim 2, the axial length of the cylindrical portion 131 is 0. The bottle lid according to claim 1, which is provided 5 to 2 times.

The invention according to claim 3 is the bottle cover according to claim 1, wherein the thickness of the flange 132 is smaller than the thickness of the cylindrical portion 131.

The invention according to claim 4 is the bottle cover according to claim 1, wherein the included angle between the flange 132 and the cylindrical portion 131 is provided in an arc shape.

The invention according to claim 5 is the bottle cover according to claim 1, wherein the open end of the elastic piece 141 is extended to above the stationary end of the flange 132.

[0014]

[Embodiment of the invention]

 In the present invention, a first seal structure and a second seal structure are provided integrally on the inner upper surface of the lid, and one connecting portion is formed along the lower end of the antitheft ring and the lid, and one edge is formed at an edge portion thereof. Two guide grooves are provided, and the lid and the other end of the anti-theft ring are connected by bridging portions provided at equal intervals.

In the present invention, the first seal structure and the second seal structure in the lid body are completed by integral molding, so that there is no trouble of forming the seal structure by the secondary processing as in the related art, and the gas in the bottle is reduced to the bottle neck. The two-stage sealing effect is achieved by blocking the gap that can leak to the outside from the outside, and the outside air can be prevented from entering the bottle due to the negative pressure inside the bottle. Reduces the torque when attaching the lid, prevents cracks when attaching the anti-theft ring to the lid, reduces the gap between the anti-theft ring and the bottle neck after closing the lid, and the torque when the user opens the lid It is convenient to open the bottle, and when opening it, the burglar ring comes off the bottle mouth integrally with the bottle lid, it is convenient for separating and collecting the bottle body and the bottle lid, and for items that are compatible with environmental protection. Useful for sorted collection.

[0016]

【Example】

 As shown in FIG. 3, the bottle lid of the present invention is made of plastic, includes one lid body 10, and has a screw portion 11 provided on the inner periphery of the lid body 10, and the screw portion 11 is a bottle body. 20 is screwed with a male screw on the outer periphery of the bottle opening 21. The lower part of the lid 10 is a security ring 40.

A first seal structure 13 and a second seal structure 14 are integrally formed on the inner upper surface of the lid 10. The first seal structure 13 includes a cylindrical portion 131 formed on the inner upper surface of the lid 10 and extending downward in the axial direction at a position slightly smaller than the inner periphery of the bottle opening 21, and an opening of the cylindrical portion 131. The end portion includes a flange 132 which is bent radially outward and upward in an arc shape so as to form a predetermined angle with the cylindrical portion 131, and has an axial length L of the cylindrical portion 131. The distance between the threads of the screw portion 11 is set to 0.5 to 2 times, and the cylindrical portion 131 and the flange 132 are both elastic. The material thickness of the flange 132 is larger than the material thickness of the cylindrical portion 131. The included angle formed between the flange 132 and the cylindrical portion 131 is arc-shaped.

The second seal structure 14 is an elastic piece 141 having elasticity formed by extending inward in a radial direction at a position above the uppermost part of the screw on the inner periphery of the lid 10. The open end of 141 is extended so that the flange 132 is located above the end when the stationary state, and the elastic piece 141 also has elasticity.

As shown in FIG. 4, when the bottle mouth 21 of the bottle body 20 and the lid 10 are screwed together, the lid 10 is connected to the bottle mouth 21 downward in the axial direction. The bottle mouth 2 first presses the flange 132 of the first seal structure 13 and pushes it toward the cylindrical portion 131 to reduce the included angle portion. Thereafter, the outer peripheral portion and the corner portion of the upper end of the bottle opening 21 push the elastic piece 141 of the second seal structure 14 from bottom to top, and the upper end of the elastic piece 141 is tightened by the lid 10 to close the lid. The elastic piece 141 closely adheres to the bottle mouth 21 portion due to the change in elasticity at which the outer edge of the bottle mouth 21 occurs. When the lid 10 and the bottle mouth 21 are positioned, the first seal structure 13 and the second seal structure 14 are tightly adhered to the inner periphery and the outer edge surface of the bottle mouth 21 by their own elastic recovery force. Achieved a stepped sealing effect.

The anti-theft ring 40 is formed integrally with the bottom end of the lid 10, and a connecting portion 41 is formed along the lower end of the anti-theft ring 40 and the lid 10. A plurality of locking edges 34, 42 are formed at corresponding positions of the remaining end portions at intervals, and connecting grooves 35, 43 recessed between the locking edges 34, 42 are formed. A bridging portion 44 is extended into the connecting groove 43 to be connected to the inner end face of the connecting groove 35 of the lid 10, and after the anti-theft ring 40 and the lid 10 are formed, the corresponding locking edges 34, 42 of the both are formed. One gap 45 is formed between them.

An oblique guide groove 46 is formed at an edge of the coupling portion 41 of the antitheft ring 40, and the guide groove 46 is inclined in a rotation direction for closing the lid 10, and a bottom end of the guide groove 46. Is formed in a closed shape, and one connecting point 461 is formed in the antitheft ring 40 below the guide groove 46.

The inner circumference of the antitheft ring 40 of the present invention corresponds to the outer diameter of the bottle opening 21 of the bottle body 20, and a plurality of reinforcing protrusion blocks 47 are provided at equal intervals on the outer circumferential surface, and the inner circumferential surface is also annular. Is provided with a locking rib 48, and the upper surface of the locking rib 48 has a flat shape, and the bottom surface has an arc shape that gradually contracts.

When the bottle lid is attached to the bottle mouth 21 by a mounting machine, the bottle body 20 receives the downward pressure of the bottle lid and presses the gap 45 during the attaching process. The locking edge 34 of the antitheft ring 34 and the locking edge 42 of the antitheft ring 40 are in contact with each other, thus forming one connecting surface for receiving the force, so that the antitheft ring 40 can bear the pressure when the lid is effectively attached. The advantage of this design is that the pressure applied to the bridge 33 when the lid is attached can be reduced, thereby preventing the occurrence of cracks when the lid is attached. Since the inside diameter of the antitheft ring 40 corresponds to the outside diameter of the bottle mouth 21, it can withstand a relatively large pressure pushed and spread from the bottle mouth when it passes through the screw portion. However, the reinforcing ribs 47 installed at equal intervals on the outer periphery of the antitheft ring 40 not only increase the structural strength of the antitheft ring 40 but also maintain a suitable elasticity of the antitheft ring 40 by the gap between the reinforcing ribs 47. It is provided in. The arcuate portion at the bottom of the locking block 48 allows the antitheft ring 40 to pass through the bottle opening 21 more smoothly, making it difficult for cracks to occur, reducing the number of defective products and reducing the cost loss of the trader.

The greatest advantage of the structure in which the inner diameter of the antitheft ring 40 is equivalent to the outer diameter of the bottle mouth 21 is that the antitheft ring 40 approaches the outer periphery of the bottom end of the bottle mouth 21 after the bottle lid and the bottle mouth 21 are combined. In addition, since the upper surface of the locking rib 48 is flat, the bottom end of the bottle opening 21 can be smoothly pressed to effectively assist the positioning action of the antitheft ring 40 when the bottle cover is opened. By effectively reducing the gap between the anti-theft ring 40 and the bottle mouth 21, it is possible to prevent the product from being destroyed using the gap.

The situation in which the bottle lid of the present invention is removed from the bottle mouth after opening is described below. When the bottle lid is opened by twisting, the antitheft ring 40 is fixed by the action of pressing the bottom edge of the bottle opening 21 of the locking rib 48 so that the antitheft ring 40 is not moved and the bottle body 20 is rotated by an external force. At this time, the bridging portion 44 is cut by the concentration of the torque, and at the same time, the guide groove 46 is inclined toward the direction in which the lid is closed, so that the connecting contact 461 is also cut by the rotational force for opening the lid. In this way, about three-quarters of the circumference of the bottle lid is separated into the anti-theft ring 40 and the lid 10, so that the bottle lid is detached from the bottle mouth, and the anti-theft ring 40 is further moved about four-quarters of the circumference. Since the lid 10 is connected to the lid 10 at the first connection portion 41, the antitheft ring 40 is simultaneously pulled out when the lid 10 is pulled out. In this way, the antitheft ring 40 is separated from the bottle mouth and does not remain at the bottle mouth, which helps in separating and recovering the bottle. Since the well-known antitheft ring 40 is made of a different material from the bottle, the antitheft ring 40 is stolen at the time of collection. The disadvantage of having to remove the ring 40 is solved.

The advantages of the first seal structure 13 and the second seal structure 14 of the lid 10 are as follows. 1. The first seal structure 13 and the second seal structure 14 of the present invention are formed integrally with the lid 10, and it is not necessary to manufacture a seal pad by secondary processing according to a known technique. 2. The present invention has a two-stage seal structure, that is, the gas in the bottle body 20 is blocked by the first seal structure 13 to achieve the first-stage seal, and the second seal structure 14 allows the gas to pass from the bottle mouth to the outside world. The second gap seal is achieved by blocking the leakage gap, achieving an effective seal effect. 3. The sealing structure of the present invention has a negative pressure resistance function, and if a high-temperature food of 85 degrees Celsius or more is put in the bottle body 20, even if the food temperature drops and a negative pressure is generated in the bottle, The first seal structure 13 and the second seal structure 14 can prevent external air from entering the bottle 20. As shown in FIG. 6, when the external air passes through the second seal structure 14 due to the negative pressure inside the bottle, the external air returns between the cylindrical portion 131 of the first seal structure 13 and the flange 132, and The flange 132 is more closely adhered to the inner periphery of the bottle opening 21, thereby preventing external air from entering the bottle body 20. 4. The first seal structure 13 and the second seal structure 14 can be applied to a bottle body having a slightly different inner diameter of the bottle mouth 21. As shown in FIG. 4, both the first seal structure 13 and the second seal structure 14 are used. Since the distance between the roots is formed in light of the thickness of the general bottle mouth 21, if the bottle mouth 21 is relatively thick and the bottle mouth 21 passes through the first seal structure 13 and the second seal structure 14, The cylindrical portion 131 of the first seal structure 13 is pushed inward by its elasticity, and the bottle mouth 21 is smoothly positioned between the first seal structure 13 and the second seal structure 14, so that a good sealing effect can be achieved. . The tolerance of a general bottle mouth is about 0. Although it is 2 mm, the present invention is applicable even if it is expanded to 1.5 mm. 5. By the two-stage sealing function, the inside of the bottle mouth 21 of the bottle body 20 is sealed by the first seal structure 13, and the periphery and the corner of the upper end of the bottle mouth 21 are sealed by the second seal structure 14. When the lid 10 is attached to the bottle mouth 21, it is immediately positioned at the specified position, so that the torque when the lid is closed can be reduced, the stability of the connection between the cover 10 and the bottle mouth 21 can be increased, and the user can use the lid. The torque when opening the body 10 can be reduced, which is convenient for opening. 6. When the bottle 20 is filled with the carbonated beverage, the pressure inside the bottle increases, but the first seal structure 13 and the second seal structure 14 of the present invention are in close contact with the bottle mouth 21 due to their own elasticity. It can withstand the high pressure in the bottle, has no danger of gas leakage, can relatively maintain the freshness of the beverage, and can ensure the quality of the beverage. 7. Although the general bottle mouth 21 has irregularities on the upper end surface of the bottle mouth 21 after production, a well-known seal pad could not adhere to the irregularities, causing leakage. However, according to the present invention, since the elastic piece 141 of the second seal structure 14 is bent and adheres to the upper surface of the bottle opening 21 and elastically adheres to the uneven portion, no leakage occurs. 8. The axial length of the cylindrical portion 131 of the first seal structure 13 of the present invention is set to 0.5 to 2 times the thread distance of the screw portion 11 of the lid 10, and this design is the same as the structure of the anti-theft ring 40. This is for combining the operation of turning the lid. That is, when the antitheft ring is normally turned about 30 degrees, it separates from the lid and the lid is further turned up and rises. At this time, the well-known sealing pad actually separates from the bottle mouth earlier, Pressure and gas leak from inside. However, in the present invention, the first seal structure 13 does not come off from the inner periphery of the bottle opening 21 when the lid 10 is rotated within 270 degrees, in other words, the gas in the bottle leaks unless the lid 10 is rotated more than 270 degrees. do not do. Therefore, since the first seal structure 13 and the second seal structure 14 are in the sealing position in the initial stage of opening the bottle with the antitheft ring 40 and the lid 10, gas leakage can be prevented and the quality of the beverage can be maintained.

[0027]

[Effect of the invention]

 In the present invention, a first seal structure and a second seal structure are integrally provided on the inner upper surface of the lid, and a burglar ring provided below the lid and a coupling portion are formed along an end of the lid, and the connecting portion is formed. A guide groove is provided in the edge portion of the cover, and another portion of the opposite end portion of the cover and the anti-theft ring is connected by a bridge portion provided at an equal distance. According to the present invention, the first seal structure and the second seal structure are integrally formed in the lid, so that the secondary processing required for the seal structure is not required, and the leakage of the gas in the bottle to the outside world is eliminated. The two-stage seal prevents the two-stage seal function from reducing the torque when closing the lid, making it difficult for the anti-theft ring to crack, and theft-proof after the lid is closed. The gap between the ring and the bottle mouth is reduced, the torque when the user opens the lid is reduced and it is convenient to open it.When opening, the antitheft ring detaches the bottle mouth with the bottle body and the bottle body and the bottle It is convenient for separating and collecting lids, and is supposed to be classified and collected for environmentally-friendly items.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a well-known bottle lid.

FIG. 2 is a sectional view of another known bottle lid.

FIG. 3 is a partial cross-sectional view of the bottle lid of the present invention.

FIG. 4 is a cross-sectional view of the bottle lid and the bottle mouth of the present invention;

FIG. 5 is another combined sectional view of the bottle lid and the bottle mouth of the present invention.

FIG. 6 is a view showing a negative pressure resistance of the seal structure of the present invention.

FIG. 7 is a development view of the bottle lid and the anti-theft ring of the present invention.

FIG. 8 is a view showing the use of the present invention when the lid is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Lid 11 Screw part 13 1st seal structure 131 Cylindrical part 132 Flange 14 2nd seal structure 141 Elastic piece 20 Bottle 21 Bottle mouth 40 Anti-theft ring 41 Coupling part 34, 42 Locking edge 35, 43 Connecting groove 44 Bridge part 45 gap 46 guide groove 461 continuous contact 47 reinforcing protruding block 48 locking rib

Claims (5)

[Utility model registration claims] 1. A lid 10 having a screw 11 which can be screwed with a male screw around a bottle opening 21 of a bottle 20 on an inner periphery thereof,
A bottle cover having a security ring 40 formed below the cover body 10, a first seal structure 13 and a second seal structure 14 are integrally formed on the upper inside of the cover body 10, and the first seal structure is formed. A cylindrical portion 131 is formed by extending a position slightly smaller than the inner periphery of the bottle mouth 21 on the inner upper surface of the lid 10 and extending downward in the axial direction, and an open end portion of the cylindrical portion 131 extends in a radial direction. The cylindrical portion 13 is bent outward in an arc shape.
1 and a flange 132 formed to have a predetermined angle
The cylindrical portion 131 and the flange 132 both have elasticity, and the second seal structure 14 extends radially inward at a position above the uppermost portion of the screw on the inner periphery of the lid 10. The antitheft ring 40 is formed integrally with the bottom end of the lid 10, and a connecting portion 41 is formed along the lower end of the antitheft ring 40 and the lid 10. A plurality of locking edges 34 at intervals corresponding to the lid 10 and the remaining end of the antitheft ring 40;
42 is formed, and connecting grooves 35 and 43 recessed between the locking edges 34 and 42 are formed, and the connecting grooves 4 of the antitheft ring 40 are formed.
3, the bridging portion 44 extends to connect with the connecting groove 35 of the lid 10, and after the burglarproof ring 40 and the lid 10 are formed, one gap 45 is formed between the corresponding locking edges 34, 42. The oblique guide groove 4 is formed at the edge of the coupling portion 41 of the antitheft ring 40.
6, the guide groove 46 is inclined in the rotation direction for closing the lid 10, and the bottom end of the guide groove 46 is formed in a closed shape, and the antitheft ring 4 below the guide groove 46 is formed.
0, one connecting contact 461 is formed. With the above structure, when the lid 10 and the bottle mouth 21 are screwed, the flange 132 elastically contacts the inner periphery of the upper end of the bottle mouth 21 and the elastic piece is formed. The bottom of 141 is in close contact with the periphery of the upper end of the bottle opening, and the upper portion of the elastic piece 141 is closely contacted between the upper inner surface of the lid 10 and the upper end of the bottle opening 21 due to the thrust of the bottle opening 21, thus providing a two-stage structure. The sealing effect is achieved, the damage of the antitheft ring 40 when the bottle lid is closed can be reduced, and both the antitheft ring 40 and the lid 10 can be detached from the bottle mouth when the bottle lid is opened. Bottle lid consisting of a configuration. 2. The length of the cylindrical portion 131 in the axial direction is set to
The screw is provided at 0.5 to 2 times the distance of the screw.
The bottle lid according to the above. 3. The bottle lid according to claim 1, wherein the thickness of the flange 132 is smaller than the thickness of the cylindrical portion 131. 4. The bottle lid according to claim 1, wherein the included angle between the flange 132 and the cylindrical portion 131 is provided in an arc shape. 5. An open end of the elastic piece 141 has a flange 13
2. The bottle lid according to claim 1, wherein the bottle lid is extended to above the end in the stationary state of No. 2.