CN203581574U - Novel inner-plug type bottle cap - Google Patents

Abstract

The utility model relates to a novel inner-plug type bottle cap. An annular inner plug is arranged in the inner top surface of a cap body of the novel inner-plug type bottle cap, the annular inner plug is formed into an integrated structure by an upper bayonet and a lower bayonet through injection molding, the outer surface of the upper bayonet is matched with a bottle mouth, and an included angle between the outer sides of the upper bayonet and the lower bayonet is an obtuse angle. The contact point of the outer surface of the upper bayonet and the bottle mouth is deepened through the length increase of the upper bayonet, so that the sealing performance is effectively improved, and the sealing property can also be kept even though the bottle mouth is deformed or scratched; the included angle between the outer sides of the upper bayonet and the lower bayonet is greater than 90 degrees, so that the increased inner diameter is decreased, the defect that the cap is not easily sealed after the inner diameter is increased can be overcome, the rejection ratio is decreased, and waste is reduced; the demoulding mode of an upright-type inner plug does not need to be changed when a novel inner plug is produced, so that the novel inner-plug type bottle cap has the advantage of high production speed.

Description

A kind of novel plug-in bottle cap

Technical field:

The utility model relates to a kind of bottle cap, relates in particular to a kind of plug-in bottle cap.

Background technology:

Plastic bottle closure inside is provided with in an annular fills in to guarantee its leak tightness.Plug mainly contains two kinds of erect type and olive-types in existing annular, and in this annular of two types, plug is injection molded into integrative-structure by upper latch notch and lower bayonet socket.Erect type structure as shown in Figure 1, the outside face of upper latch notch (10) coordinates and plays sealing function with bottleneck inner side, because the length of upper latch notch (10) only has 3.7mm, superficial with the contact point A of bottleneck, cause its sealing property poor.Olive-type structure as shown in Figure 2, the outside face of lower bayonet socket (21) coordinates with bottleneck, lower bayonet socket (21) is olive-type structure, bossing can make the contact point B of itself and bottleneck tightr, thereby there is the reasonable advantage of leak tightness, but the speed of production of this structure is slower.

Summary of the invention:

The utility model is in order to overcome defect in above-mentioned prior art, provides a kind of and has had that speed of production is fast, the novel plug-in bottle cap of good airproof performance concurrently.

In order to realize the above object, according to the utility model, provide

A kind of novel plug-in bottle cap, lid inner top surface is provided with plug in annular, it is characterized in that: in described annular, plug is injection molded into integrative-structure by upper latch notch and lower bayonet socket, and the outside face of upper latch notch coordinates with bottleneck, the angle between described upper latch notch and lower bayonet socket outside is obtuse angle.

Compared with prior art, the utlity model has following beneficial effect:

Increased the length of upper latch notch, the contact point of its outside face and bottleneck is deepened, effectively improved sealing property, even if bottleneck deforms or have while scuffing also can keep leak tightness, reached that GB keeps one's end up, the not requirement of bullet lid; Secondly, owing to having increased the length of upper latch notch, its interior diameter is large compared with original phase strain, because the angle between upper latch notch and the outside of lower bayonet socket is greater than 90 degree, the interior diameter that becomes large can be reduced again again, overcome the defect that causes being difficult for capping after interior diameter becomes greatly, reduce fraction defective, cut the waste; Novel interior plug does not need to change the stripping means of plug in erect type while producing, therefore have advantages of that speed of production is fast.

Accompanying drawing explanation:

Fig. 1 is the cross-sectional view of the erect type plug-in bottle cap of prior art;

Fig. 2 is the cross-sectional view of the olive-type plug-in bottle cap of prior art;

Fig. 3 is the cross-sectional view of a kind of novel plug-in bottle cap of the present utility model.

The specific embodiment:

Below in conjunction with accompanying drawing, a specific embodiment of the present utility model is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of the specific embodiment.It will be appreciated that, mentioned in following embodiment of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " be all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technical scheme of the present invention.

As shown in Figure 3, a kind of novel plug-in bottle cap, lid inner top surface is provided with plug in annular, and in described annular, plug is injection molded into integrative-structure by upper latch notch 1 and lower bayonet socket 2, the outside face of upper latch notch 1 coordinates with bottleneck, and the angle between upper latch notch 1 and lower bayonet socket 2 outsides is obtuse angle.

Bottleneck distortion or while scratching the length of upper latch notch 1 increased to 4.3mm by the 3.7mm of original erect type, the contact point of itself and bottleneck inwall deepened, thereby improved sealing property, even if also can have good leak tightness.Because there is certain gradient the inner side of upper latch notch 1, after its length increases, in annular, the interior diameter phase strain of plug is large, because the angle between upper latch notch 1 and lower bayonet socket 2 outsides is greater than 90 degree, becoming large interior diameter can reduce again, effectively overcome because interior diameter becomes the very difficult defect of large rear seal-cover, reduced fraction defective, cut the waste.

During production, in annular, the stripping means of plug 1 is the same with erect type, thereby has advantages of that speed of production is fast.

Disclosed is above only specific embodiment of the utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.

Claims (1)

1. a novel plug-in bottle cap, lid inner top surface is provided with plug in annular, it is characterized in that: in described annular, plug is injection molded into integrative-structure by upper latch notch and lower bayonet socket, and the outside face of upper latch notch coordinates with bottleneck, the angle between described upper latch notch and lower bayonet socket outside is obtuse angle.

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