CN213677985U

CN213677985U - Sealing structure of bottle mouth and bottle cap of plastic bottle

Info

Publication number: CN213677985U
Application number: CN201822108996.4U
Authority: CN
Inventors: 朱紫熠
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2021-07-13
Anticipated expiration: 2028-12-14

Abstract

The utility model discloses a can be after the plastic bottle is opened and is sealed, cover the bottleneck of the plastic bottle that the bottle lid still can seal and the seal structure of bottle lid, include: the bottle cap comprises a locking external thread arranged on the outer side surface of a bottle mouth and a locking internal thread arranged on the inner side surface of the side wall of the bottle cap, wherein an annular sealing cylindrical surface is arranged at the upper part of the bottle mouth, a sealing ring matched with the annular sealing cylindrical surface is arranged on the inner surface of the side wall of the bottle cap, and a guide surface is arranged on one side of a port close to the bottle cap of the sealing ring. The utility model discloses a set up the sealed cylinder of annular of indentation inwards on the bottleneck, set up on the internal surface of bottle lid lateral wall with the sealed cylinder matched with sealing ring of annular for it is sealed to have formed between bottleneck and the bottle lid, just so can be after the bottle is opened and is sealed, covers the bottleneck that the bottle lid still can seal the plastic bottle.

Description

Sealing structure of bottle mouth and bottle cap of plastic bottle

Technical Field

The utility model relates to a plastic bottle, concretely relates to bottleneck and seal structure of bottle lid of plastic bottle.

Background

As is well known, the mouth of a plastic bottle is usually sealed by adopting an aluminum foil electromagnetic induction welding seal, and the plastic bottle has no problem in sealed preservation when not opened. However, even if the bottle cap is attached to the bottle mouth after the plastic bottle is opened and the aluminum foil is opened, the bottle mouth cannot be completely sealed, and thus the storage time of the contents in the bottle is relatively short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the sealing structure of the bottle mouth and the bottle cap of the plastic bottle can seal the plastic bottle after the plastic bottle is opened and the bottle cap is covered.

In order to solve the technical problem, the utility model discloses a technical scheme does: a sealing structure of a bottle mouth and a bottle cap of a plastic bottle comprises: the bottle cap comprises a locking external thread arranged on the outer side surface of a bottle mouth and a locking internal thread arranged on the inner side surface of the side wall of the bottle cap, wherein an annular sealing cylindrical surface is arranged at the upper part of the bottle mouth, a sealing ring matched with the annular sealing cylindrical surface is arranged on the inner surface of the side wall of the bottle cap, and a guide surface is arranged on one side of a port close to the bottle cap by the sealing ring.

Preferably, in the sealing structure between the bottle mouth and the bottle cap of the plastic bottle, the guide surface is a tapered surface.

In a preferred embodiment, in the sealing structure between the bottle mouth and the bottle cap of the plastic bottle, the sealing ring is provided with a conical transition surface at a side close to the top wall of the bottle cap.

Preferably, in the sealing structure between the bottle mouth and the bottle cap of the plastic bottle, a chamfer is arranged at the edge of the bottle mouth.

Preferably, in the sealing structure between the bottle mouth and the bottle cap of the plastic bottle, the annular sealing cylindrical surface is inwardly retracted, so that the upper part and the lower part of the bottle mouth form a step shape.

The utility model has the advantages that: the utility model discloses a set up the sealed cylinder of annular on the upper portion of bottleneck, set up on the internal surface of bottle lid lateral wall with the sealed cylinder matched with sealing ring of annular for it is sealed to have formed between bottleneck and the bottle lid, just so can prolong the save time of article in the bottle greatly.

Drawings

Fig. 1 is a schematic structural view of the bottle cap and the bottle mouth of the present invention.

Fig. 2 is a schematic structural view of the bottle cap of the present invention covering on the bottle mouth.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

The reference numerals in fig. 1 to 3 are: 1. plastic bottle, 11, bottle mouth, 111, locking external thread, 112, annular sealing cylindrical surface, 1121, chamfer, 2, bottle cap, 20, top wall, 21, side wall, 211, locking internal thread, 212, sealing ring, 2121, conical transition surface, 2122, conical guide surface, 3 and aluminum foil.

Detailed Description

The following describes in detail a specific embodiment of a sealing structure for a bottle opening and a bottle cap of a plastic bottle according to the present invention with reference to fig. 1 to 3.

As shown in fig. 1, the sealing structure for the bottle mouth and the bottle cap of the plastic bottle of the present invention comprises: the locking structure comprises a locking external thread 111 arranged on the outer surface of the lower part of a bottle opening 11 of the plastic bottle 1 and a locking internal thread 211 arranged on the inner side surface of a side wall 21 of a bottle cap 2, wherein an annular sealing cylindrical surface 112 which retracts inwards is arranged on the upper part of the bottle opening 11, so that the upper part and the lower part of the bottle opening 11 form a step shape, a chamfer 1121 is arranged at the edge of the bottle opening 11, a sealing ring 212 matched with the annular sealing cylindrical surface 112 is arranged on the inner surface of the side wall 21 of the bottle cap 2, as shown in fig. 3, a conical transition surface 2121 is arranged on one side, close to a top wall 20 of the bottle cap 2, of the sealing ring 212, and a.

Plastic bottle 1 after opening bottle lid 2 and taking off aluminium foil 3, bottle lid 2 still can seal plastic bottle 1. Therefore, the sealing can be realized by the following mechanism: when the bottle cap 2 is covered on the bottle mouth 11 of the plastic bottle 1, the sealing ring 212 on the bottle cap 2 forms an interference fit with the annular sealing cylindrical surface 112 on the bottle mouth 11, thereby achieving the purpose of sealing. This greatly extends the shelf life of the contents of the bottle.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the shapes, structures, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A sealing structure of a bottle mouth and a bottle cap of a plastic bottle comprises: set up the locking external screw thread on bottleneck outside surface and set up the locking internal thread on the inboard surface of bottle lid lateral wall, its characterized in that: the upper portion of bottleneck is provided with annular sealing cylinder, annular sealing cylinder indent inwards for the upper and lower part of bottleneck forms the echelonment, be provided with on the internal surface of bottle lid lateral wall with annular sealing cylinder matched with sealing ring, form the bottle lid that has the sealing ring, promptly: bottle lid and sealing ring formula structure as an organic whole, the sealing ring be provided with the guide surface in port one side that is close to the bottle lid, the sealing ring has one section vertical face of laminating each other with the sealed cylinder of annular in the part of guide surface below.

2. The sealing structure for the mouth and the cap of the plastic bottle according to claim 1, wherein: the guide surface is a conical surface.

3. The sealing structure for the mouth and the cap of the plastic bottle according to claim 1, wherein: the sealing ring is provided with a conical surface transition surface at one side close to the top wall of the bottle cap.

4. The sealing structure for the mouth and the cap of the plastic bottle according to claim 1, wherein: and a chamfer is arranged at the edge of the bottle mouth.