JP3173398U - Bottle lid sealing structure - Google Patents

Abstract

A bottle lid sealing structure that prevents leakage and enhances the sealing effect is provided.
The sealing structure of the bottle lid is an annular object installed between the inner annular body 10 and the side wall of the bottle lid, the cross-sectional shape of the sealing structure is an unequal triangle, and the first side 32 and the second side An arc angle 31 is formed at a place where 33 intersects. The length of the first side exceeds the second side, the angle at which the first side and the inner upper surface of the bottle lid intersect is 90 degrees or more, and the angle at which the second side and the inner upper surface of the bottle lid intersect is 90 degrees or less. . When the bottle lid and the bottle mouth are joined, the sealing structure tightly presses the upper outer corner of the bottle mouth without changing the shape.
[Selection] Figure 3

Description

  The present invention relates to a bottle lid sealing structure, and more particularly to a bottle lid sealing structure that prevents leakage and enhances the sealing effect.

  As for the known technology of the multiple sealing structure of the bottle lid, it is disclosed in Patent Document 1, Chinese Utility Model Publication No. 586511, Japanese Patent Laid-Open No. 2000-191019 in Patent Document 2, Japanese Patent No. 4634598 in Patent Document 3, etc. It is as it is.

  In Patent Document 1 (No. 586511) and Patent Document 3 (No. 4634598), a tight annular body and a lower pressure leakage preventing annular body are projected downward from the inner surface of the bottle lid, and the lid body is a container. The lower pressure leak-proof annular body presses and holds the upper part of the bottle mouth and the tight annular body comes into close contact with the outer edge of the bottle mouth, thereby exhibiting a leak-preventing effect. Each of the two close ring structures described above has a length and a shape that allow a sufficient amount of deformation to be generated, but the stress of the shape change causes the connection between the close ring and the upper surface in the bottle lid. There is also a possibility that the tight annular body, which is easily generated at a location and affected by the temperature change of the cold heat, cracks and falls off.

  In Patent Document 2 (No. 2000-191019), a lower pressure leakage preventing annular body is provided to project downward from the inner surface of the bottle lid, and the function of the lower pressure leakage preventing annular body is the same as that described above. The sealing leakage prevention effect of the lower pressure leakage prevention annular body is clearly inferior to the above-mentioned two patents.

Taiwan Utility Model Notice 586511 Japanese Unexamined Patent Publication No. 2000-191019 Japanese Patent No. 4634598

  The present invention was made to solve the problem of disappearance of the sealing leak prevention effect due to the drop in shape due to the shape change and cracking included in the leak prevention sealing structure of the known technology. An object is to provide a sealing structure.

  The sealing structure of the bottle lid according to the present invention is an annular object provided between the inner annular body and the side wall of the bottle lid, and the cross-sectional shape of the sealing structure is an unequal triangular shape, where the first side and the second side intersect An arc angle is formed in The length of the first side exceeds the second side, the angle at which the first side and the inner upper surface of the bottle lid intersect is 90 degrees or more, and the angle at which the second side and the inner upper surface of the bottle lid intersect is 90 degrees or less. .

In the bottle lid sealing structure of the present invention, when the bottle mouth and the bottle lid are coupled, the sealing structure tightly presses the upper outer corner of the bottle mouth without causing a shape change.
In addition, the sealing structure of the present invention is better when the structural strength is compared with the close annular body in the known technique described above.
Since the sealing structure of the present invention has an effect of catching thermal expansion and contraction, it can prevent a cracking problem due to stress concentration.
Furthermore, the sealing structure of the present invention has structural strength and stability, can enhance the leakage prevention effect of the sealing structure, and can reliably maintain its sustainability.

It is a whole sectional view of the bottle lid of the present invention. FIG. 2 is a partially enlarged view of FIG. 1. It is the figure which showed the sealing structure of this invention. It is a partial cross section figure which combined the bottle mouth and the bottle lid of the present invention.

  Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1, 2, and 3, the sealing structure 30 of the present invention is installed between the inner annular body 10 of the bottle lid 2 and the side wall 11 of the bottle lid 2 and protrudes downward from the upper surface 3 inside the bottle lid. It is a ring.
The cross-sectional shape of the sealing structure 30 is an unequal triangle.
A circular arc angle 31 is formed at the intersection of the first side 32 and the second side 33.
The length of the first side 32 is longer than the second side 33.
The angle at which the first side 32 and the inner upper surface 3 of the bottle lid 2 intersect is 90 degrees or more, and the angle at which the second side 33 and the inner upper surface 3 of the bottle lid 2 intersect is 90 degrees or less.
Moreover, the 1st boundary point 34 and the 2nd boundary point 35 are each formed in the boundary where the 1st edge | side 32, the 2nd edge | side 33, and the inner upper surface 3 of the bottle lid 2 cross.
The first boundary point 34 and the second boundary point 35 have a straight line distance. The linear distance is defined as the bottom side 36 of the sealing structure 30, and the length of the bottom side 36 of the sealing structure 30 exceeds the second side 33.

FIG. 4 is a cross-sectional view showing a state in which the bottle lid of the present invention is coupled to the bottle mouth.
The inner annular body 10 is brought into close contact with the inner wall 41 of the bottle mouth, and the screw thread 43 of the bottle mouth outer wall 42 and the screw thread 12 of the bottle lid 2 side wall 11 are coupled.
The length of the first side 32 of the sealing structure 30 is longer than the second side 33, and the first side 32 is characterized by a shape in which the angle at which the first side 32 and the inner upper surface 3 of the bottle lid 2 intersect exceeds 90 degrees. Presses and holds the outer corner 45 on the upper surface of the bottle mouth along the movement.
In addition, due to the feature that the angle at which the second side 33 and the inner upper surface 3 of the bottle lid 2 intersect each other is 90 degrees or less, the sealing structure 30 generates an acting force that opposes the outer corner 45 to tightly press and hold the upper part. The sealing structure 30 can prevent a situation in which stress concentrates on the first boundary point 34 and the second boundary point 35 without causing a shape change.

Compared with the close annular body taken up in the prior art described above, the sealing structure 30 of the present invention is clearly better in structural strength and stability.
The sealing structure 30 of the present invention has the effect of catching thermal expansion and contraction, and the length of the bottom side 36 is longer than the second side 33. Therefore, the problem of dropping off due to tearing of the sealing structure 30 is greatly reduced, and the sealing effect is improved. Can be strengthened and its endurance can be reliably maintained.

2 Bottle lid 3 Bottle lid inner upper surface 10 Inner annular body 11 Bottle lid side wall 12 Thread 30 Sealing structure 31 Arc angle 32 First side 33 Second side 34 First boundary point 35 Second boundary point 36 Bottom side 41 Bottle mouth inner wall 42 Bottle mouth outer wall 43 Thread 44 Bottle top surface 45 Outside corner

Claims (3)

It is a sealing structure of a bottle lid that is one annular object installed between the inner annular body of the bottle lid and the side wall of the bottle lid,
The cross-sectional shape of the sealing structure is an unequal triangle,
An arc angle is formed at the place where the first side and the second side meet,
The length of the first side is longer than the second side,
The angle at which the first side and the upper surface inside the bottle lid intersect is 90 degrees or more,
A sealing structure for a bottle lid, wherein an angle between the second side and the inner upper surface of the bottle lid is 90 degrees or less.   The first boundary point and the second boundary point are formed at the boundary where the first side, the second side, and the inner upper surface of the bottle lid intersect, and the linear distance between the first boundary point and the second boundary point is sealed. The bottle lid sealing structure according to claim 1, wherein the bottle lid sealing structure is defined as a bottom side of the structure, and a length of the bottom side of the sealing structure exceeds a second side of the sealing structure.   The sealing structure for a bottle lid according to claim 1, wherein when the bottle lid and the bottle mouth are coupled, the outer side of the upper surface of the bottle mouth is tightly pressed by the first side.

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