CN201610251U

CN201610251U - Plastic bottle cap

Info

Publication number: CN201610251U
Application number: CN200920237494XU
Authority: CN
Inventors: 黄醒超
Original assignee: FOSHAN SHUNDE XINKANG PLASTIC PACKAGING Co Ltd
Current assignee: FOSHAN SHUNDE XINKANG PLASTIC PACKAGING Co Ltd
Priority date: 2009-10-20
Filing date: 2009-10-20
Publication date: 2010-10-20
Anticipated expiration: 2019-10-20

Abstract

The utility model relates to a plastic bottle cap. Aiming to solve the defects that the pinna structure adopted in the prior art has high technology requirement and loose locking of the bottle mouth, the utility model adopts the following technical scheme: the plastic bottle cap comprises a cap base body, a cap foot and a connecting rib, wherein the cap base body is connected with the cap foot through the connecting rib; internal threads corresponding to the external threads of the bottle mouth are formed on the inner side of the cap base body; and a raised edge is arranged on the inner side of the cap foot. By adopting the structure, the plastic bottle cap has simple structure and convenient opening.

Description

A kind of plastic bottle closure

Technical field

The utility model relates to a kind of bottle cap, particularly a kind of self-locking type sealed plastic bottle cap.

Background technology

Plastic bottle requires bottle cap should have good sealing property and takes into account tight lock function again, also will conveniently open simultaneously.Some at present commercially available plastic beverage bottles bottle cap, mainly comprise and cover matrix, lid pin and dowel, the lid matrix is connected with the lid pin by dowel, and the inboard of lid pin is provided with flat crescent or square inside accessory pinna, utilizes the accessory pinna of opening in this to make to cover matrix to lock bottleneck.When opening bottle cap, the relative bottleneck not turn of position of lid pin makes the dowel that covers matrix and lid pin bear moment of torsion and is broken, and has realized bottle lid opening process.But the accessory pinna structure of opening in this has following shortcoming: the accessory pinna structure is because requirement is thinner, and is high to the plastics molding process requirement, fraction defect height in the bottle cap production process; The accessory pinna structure is not strong to the tight lock power of bottleneck, and making influences the bottle cap unlatching by the dowel easy fracture not cover matrix and lid pin.

Summary of the invention

It is a kind of simple in structure that the technical problems to be solved in the utility model is to provide, and opens plastic bottle closure easily.

For addressing the above problem, the technical solution of the utility model is: plastic bottle closure comprises and covers matrix, lid pin and dowel, the lid matrix is connected with the lid pin by dowel, and lid matrix inboard is provided with and the cooresponding negative thread of external thread of bottleneck, and lid pin inboard also is provided with fin.When utilizing the bottle cap encapsulation, lid matrix of precession simultaneously and lid pin, the sliding lower end of supporting the bottleneck fixture block of fin until lid pin inboard.Simultaneously, the lid pin also helps fin closely to be fastened on the bottleneck to the deformation tension force effect of bottleneck; When opening bottle cap, turn lid matrix, thus covering pin owing to the static friction force relative bottleneck position not turn of fin with bottleneck, the feasible dowel that covers between matrix and the lid pin is subjected to moment of torsion and is broken, and finally realizes the uncork process.Contrast prior art scheme, the Bottle cap structure that this programme adopts is easy to produce, and bottle cap unlatching simultaneously is convenient.

As a kind of improvement, be arranged at described fin horizontal fragmentation and cover the pin inboard technique scheme.

As to further improvement in the technical proposal, described fin is taper.

As to further improvement in the technical proposal, described fin flexibly is fastened on the bottleneck.

As a kind of improvement to technique scheme, lid matrix inside top also is provided with elastic sealing element, and sealing member can match with bottleneck.Sealing member forms elastic compaction to the bottleneck outside, makes sealing member produce good sealing effectiveness to bottleneck.

To sum up, adopt above-mentioned design and improvement, bottle cap simple in structure is easy to produce, the bottleneck good leak tightness, and it is convenient to open simultaneously.

Description of drawings

Fig. 1 is the cutaway view of a kind of plastic bottle closure better embodiment of the utility model;

Fig. 2 is the birds-eye view of a kind of plastic bottle closure better embodiment of the utility model;

Fig. 3 is the running condition structure cutaway view of the better embodiment of a kind of plastic bottle closure of the utility model.

The specific embodiment

Come specific embodiment of the utility model is described below in conjunction with accompanying drawing.

Plastic bottle closure comprises and covers matrix 1, lid pin 2 and dowel 3 that lid matrix 1 is connected with lid pin 2 by dowel 3, covers matrix 1 inboard and is provided with and cooresponding negative thread 12 of external thread of bottleneck and sealing member 14, covers the fin 22 that pin 2 inboards also are provided with horizontal fragmentation.In the process of utilizing the bottle cap encapsulation, the lid of precession simultaneously matrix 1 and lid pin 2, the fin 22 sliding lower ends of supporting bottleneck fixture block 4 until lid pin 2 inboards.Simultaneously, lid pin i also helps fin 22 closely to be fastened on the bottleneck to the deformation tension force effect of bottleneck.Sealing member 14 has certain elasticity, can match with bottleneck, makes 14 pairs of bottlenecks of sealing member produce good sealing effectivenesss with the generation of bottleneck generation squeezing action after encapsulation.

When opening bottle cap, turn lid matrix 1, thus covering pin 2 owing to the static friction force relative bottleneck position not turn of fin 22 with bottleneck, the feasible dowel 3 that covers between matrix 1 and the lid pin 2 is subjected to moment of torsion and is broken, and finally realizes the uncork process.Contrast prior art scheme, the Bottle cap structure that this programme adopts is easy to produce, and bottle cap unlatching simultaneously is convenient.

Above-described only is principle of the present utility model and preferred embodiment.Should be pointed out that for the person of ordinary skill of the art, on the basis of the utility model principle, can also make some other modification, also should be considered as protection domain of the present utility model.

Claims

1. a plastic bottle closure comprises and covers matrix, lid pin and dowel, and the lid matrix is connected with the lid pin by dowel, and lid matrix inboard is provided with and the cooresponding negative thread of external thread of bottleneck, and it is characterized in that: described lid pin inboard also is provided with fin.

2. plastic bottle closure as claimed in claim 1 is characterized in that: be arranged at described fin horizontal fragmentation and cover the pin inboard.

3. plastic bottle closure as claimed in claim 2 is characterized in that: described fin is taper.

4. plastic bottle closure as claimed in claim 3 is characterized in that: described fin flexibly is fastened on the bottleneck.

5. plastic bottle closure as claimed in claim 4 is characterized in that: described lid matrix inside top also is provided with sealing member, and sealing member matches with bottleneck.