CN2233902Y

CN2233902Y - Plastic bottle cap

Info

Publication number: CN2233902Y
Application number: CN 95223363
Authority: CN
Inventors: 林荣丰; 杨启赞
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-22
Filing date: 1995-09-22
Publication date: 1996-08-28
Anticipated expiration: 2005-09-22

Abstract

The utility model relates to a plastic bottle cap. An elastic and closed sheet body is annularly and obliquely projected at the point which is in proper distance of the inner top surface of the bottle cap and the neighbouring periphery. The top surface of the closed sheet body is formed in a plane surface. While the annular protrusions at both ends of the bottom surface are provided with closed barrier edges to form a closed surface. Two rib strips are circularly arranged above the closed sheet body and in the preset position of the inner top surface of the bottle cap. The two rib strips maintain predeterminate space. On the occasion of the bottle lid being screwed with the bottle neck of the vessel, the top edge surface of the bottle neck matches the closed barrier edges and the rib strips to form a closed state to obtain a good closed and leak resistance effect.

Description

Plastic bottle lid

The utility model relates to a kind of plastic bottle lid, mainly is that the cooperation container bottle neck bottle mouth position of contiguous all acies in bottle cap is provided with an airtight lamellar body and two ribs, by this airtight lamellar body being set and this container bottle neck screws the driving fit leakage-proof effect that reaches good.

The plastic bottle lid of prior art (as shown in Figure 1) is made of a body of the bottle lid A and a soft pad B.There is negative thread to screw on the sidewall of this body of the bottle lid A, a sealing arrangement arranged in the lower end for combining with container bottle C neck with external screw thread with container bottle C neck; Its shell inner top surface cooperates has again inserted a soft pad B, reaches a sealing property afterwards so that screw with container bottle C neck top edge face.Yet though this structure can reach bottle cap and container neck sealing property, still, this structure reaches in actual use on actual fabrication, all produces many defectives and inconvenience.

The shortcoming made from regard to it is slightly told bright at first, earlier.The structure of this bottle cap is made of a body of the bottle lid and a soft pad, so this bottle cap must cooperate filling to be placed in the top of body of the bottle lid on a soft pad earlier with after the body of the bottle lid injection moulding again.Therefore, on making, then must invest and increase more multimachine tool equipment and manpower, and it is produced must increase by one machining clearance more, its speed of production must be affected, after speed of production is restricted comparatively speaking, this situation directly must be reflected on the cost, and also must the soft pad cost of supplementary payments, its whole manufacturing cost is increased greatly, cause the market competitiveness to fall sharply.

Use the inconvenience of going up generation slightly to tell bright with regard to it again.After the bottle cap on the container is opened, again bottle cap and container bottle are screwed Shi Zexu very firmly with bottle cap screwing if think.If just slightly screwed, then, this container puts or when toppling over when inclining, and then be easy to generation and leak gas or the content seepage is flowed out.And if to prevent gas leakage or seepage phenomenon and after bottle cap very firmly screwed, then must very firmly bottle cap could be opened therefore very inconvenience in the use less important down when opening bottle cap.

The purpose of this utility model provides the bottle cap a kind of and moulding of sealing lamellar body integral molded plastic, and it is convenient to screw airtight container bottle bottleneck, and its good sealing effect, and productive costs is low.

The utility model can be realized above-mentioned purpose by the bottle cap that designs following structure.

A kind of plastic bottle lid is one-body molded by the plastic cement injection, has negative thread to screw togather with the external screw thread with the container bottle neck on its sidewall, a sealing arrangement is arranged to combine with the container bottle neck in the lower end; Wherein,

Oblique the protruding out of the adjacent suitable distance ring-type with periphery of this bottle lid shell inner top surface is provided with an airtight lamellar body, and it has elasticity and predetermined thickness, and the end face of this airtight lamellar body forms a plane, and its two ends, bottom surface circular protrusion has sealing to keep off edge and forms a sealing surface; Above this airtight lamellar body, bottle cap inner top surface pre-position is equipped with two ribs, and this two rib maintains predetermined spacing, when bottle cap and container bottle neck screw, this container bottle neck top edge face then driving fit the middle bottom surface of sealing retaining edge, its end face is then airtight to be fitted between two ribs, and the driving fit of sealing retaining edge forms complete closed state at container bottle bottleneck outer peripheral edges face.

The utility model has the advantages that and to obtain good bottle cap driving fit leakage-proof effect; Reduce manufacturing cost and enhance productivity.

Describe structure of the present utility model and enforcement in detail below in conjunction with accompanying drawing, in the accompanying drawing:

Fig. 1 is the cutaway view of prior art bottle cap;

Fig. 2 is the axial cutaway view of the utility model bottle cap;

Fig. 3 is the axial cutaway view of enforcement state of the utility model bottle cap and bottleneck sealing-in.

Label is described as follows in the accompanying drawing:

Plastic bottle lid 1 external screw thread 4 sealing retaining edge 6 '

Negative thread 2 airtight lamellar body 5 top edge faces 7

Container bottle 3 sealing retaining edge 6 sealing arrangements 8

Rib 9

At first, see also Fig. 2 and shown in Figure 3: the utility model is a kind of structure improved plastic bottle lid 1, be one-body molded, have negative thread 2 to screw on its sidewall, a sealing arrangement 8 is arranged in the lower end to combine with container bottle 3 necks with external screw thread 4 with container bottle 3 necks with the plastic cement injection.

Oblique the protruding out of the adjacent suitable distance ring-type with periphery of this bottle lid shell inner top surface is provided with an airtight lamellar body 5, it has elasticity and predetermined thickness, and the end face of this airtight lamellar body 5 forms a plane, and at two ends, bottom surface circular protrusion sealing retaining edge 6,6 ' and form a sealing surface is arranged; In addition, above this airtight lamellar body 5, bottle cap 1 inner top surface pre-position is equipped with two ribs 9, and this two rib 9 maintains predetermined spacing, so that when screwing with container bottle 3 necks these container bottle 3 neck top edge faces 7 driving fits sealing retaining edge 6 and 6 ' middle bottom surface, end face is then airtight to be fitted between two ribs 9, and the outer peripheral edges face of container bottle 3 bottlenecks in 6 driving fits of sealing retaining edge, and forms a complete closed state, thereby obtains good driving fit leakage-proof effect.

In sum, the utility model has overcome the shortcoming of prior art bottle cap, its bottle cap knot Structure is reasonable, has strengthened the driving fit leakage-proof effect when screwing with the container bottleneck.

Claims

A kind of plastic bottle lid is one-body molded by the plastic cement injection, has negative thread to screw with the external screw thread with the container bottle neck on its sidewall, a sealing arrangement is arranged to combine with the container bottle neck in the lower end; It is characterized in that: oblique the protruding out of the adjacent suitable distance ring-type with periphery of this bottle lid shell inner top surface is provided with an airtight lamellar body, it has elasticity and predetermined thickness, and the end face of this airtight lamellar body forms a plane, and its two ends, bottom surface circular protrusion has sealing retaining edge and form a sealing surface; Above this airtight lamellar body, bottle cap inner top surface pre-position is equipped with two ribs, and this two rib maintains predetermined spacing, when bottle cap and container bottle neck screw, this container bottle neck top edge face then driving fit the middle bottom surface of sealing retaining edge, its end face is then airtight to be fitted between two ribs, and the driving fit of sealing retaining edge forms complete closed state at container bottle bottleneck outer peripheral edges face.