CN209127271U - Sealing structure - Google Patents

Abstract

The utility model discloses a kind of sealing structures, including lid, the lid includes top bodies, side wall, spire, internal plug and sealing gasket, the side wall is fixed on the top bodies, the spire is fixed on the side wall, the internal plug and the sealing gasket are located on the inside of the lid and are fixed on the top bodies, one bottleneck structure includes, outer wall, auxiliary section and roof, after the spire screws in the auxiliary section, the sealing gasket fits in the roof, the internal plug fits in the inner wall and is sealed, with monolithic lid sealing leak angle be greater than bridge cut-off angle and biplate lid damage with bottleneck or the sealability of the bottle of scratch and the biggish bottle of size fluctuation.

Description

Sealing structure

Technical field

The utility model relates to closure field more particularly to a kind of sealing structures.

Background technique

In product packaging, widely used plastic bottle closure is divided into single-piece plastic bottle cap and two kinds of biplate plastic bottle closure in the market, And plastic bottle closure is mainly used in plastic bottle and vial.Plastic bottle press moulding process difference, be divided into injection blow moulding PET bottle and Extrusion blow-molded PE bottles and PP bottles.

Single-piece plastic bottle cap is mainly sealed using internal plug, and top sealing and outer side seal are mainly used for injection blow moulding PET Bottle is damaged or scratch since bottle is easy to happen bottleneck in manufacture and pouring process, and monolithic is covered damages or scratch in bottleneck Bottle on sealing performance can sharp fall, being easy to happen sealing leak leads to product mutation problem.Extrusion blow-molded PE bottles with PP bottles of size fluctuation is larger, and the sealing effect of single-piece plastic bottle cap and both bottles is bad, therefore single-piece plastic bottle cap In PE bottles and PP bottles of less uses.

The important advantage of single-piece plastic bottle cap is that can achieve sealing leak angle greater than bridge cut-off angle, can be played anti-well Steal function.

For biplate plastic bottle closure then using liner sealing, primary seal is top sealing plus outer side seal or top sealing Add inner seal.It is softer due to padding, preferable sealing effect can be still played on the biggish bottle of size fluctuation, therefore Biplate plastic bottle closure extrusion blow-molded PE bottles be widely used on PP bottles and glass.Biplate plastic bottle closure damage in bottleneck or The PET bottle of scratch still has preferable sealing, thus biplate plastic bottle closure also has certain occupation rate of market in PET bottle.

The major defect of biplate plastic bottle closure is that liner sealing structure is shorter, so that bottle cap is opened very in opening process There is sealing leak problem in small angle, exists and pours into the wind that foreign matter screws back again by people's malice twist-off closure certain angle Danger, cannot play preferable anti-theft function.

In conclusion plastic bottle closure in the market or damaging or the bottle of scratch and the biggish bottle of size fluctuation in bottleneck Sealability deficiency problem above son or there are problems that sealing leak occurs in the angle for opening very little in opening process.

Utility model content

For overcome the deficiencies in the prior art, one of the purpose of this utility model is to provide a kind of sealing structure, energy It solves the problems, such as easily to reveal, and function of the sealing leak angle greater than gas leakage after the i.e. first abscission ring in bridge cut-off angle can be provided.

One of the purpose of this utility model adopts the following technical scheme that realization:

A kind of sealing structure, including lid, the lid include top bodies, side wall, spire, internal plug and sealing lining Pad, the side wall are fixed on the top bodies, and the spire is fixed on the side wall, the internal plug and the sealing lining Pad is located on the inside of the lid and is fixed on the top bodies, and a bottleneck structure includes inner wall, outer wall, auxiliary section and roof, After the spire screws in the auxiliary section, the sealing gasket fits in the roof, and the internal plug fits in the inner wall It is sealed.

Further, the internal plug includes the first seal convexity, and first seal convexity fits in the inner wall.

Further, the internal plug is perpendicular to the top bodies.

Further, first seal convexity side is in arc-shaped, and first seal convexity is laterally in institute State inner wall.

Further, between the side wall and the internal plug, the bottleneck structure is located at described the sealing gasket Between side wall and the internal plug.

Further, the outer diameter of the sealing gasket is greater than the outer diameter of the outer wall.

Further, the internal plug is along the direction extension perpendicular to the top bodies, the internal plug to the top The distance of main body is greater than the auxiliary section to the distance at the top.

Further, in a ring, the section of the sealing gasket and the top bodies pass through injection molding to the sealing gasket Molding or compression molding combine.

Further, the section of the sealing gasket is square trapezoidal round or semicircle.

Further, the inner wall is perpendicular to the top bodies.

Compared with prior art, the utility model has the beneficial effects that:

The side wall is fixed on the top bodies, and the spire is fixed on the side wall, the internal plug and described Sealing gasket is located on the inside of the lid and is fixed on the top bodies, and a bottleneck structure includes, outer wall, auxiliary section and top Wall, after the spire screws in the auxiliary section, the sealing gasket fits in the roof, and the internal plug fits in described Wall is sealed, improve bottle cap bottleneck damage or the bottle of scratch and the biggish bottle of size fluctuation above sealability.

The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model It can be more clearly understood with advantage, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.

Detailed description of the invention

Fig. 1 is the cross-sectional view of a preferred embodiment in the utility model sealing structure；

Fig. 2 is the partial enlarged view in sealing structure shown in Fig. 1 at A；

Fig. 3 is the cross-sectional view that the utility model sealing structure is in sealing state.

In figure: 100, sealing structure；10, lid；11, top bodies；12, side wall；13, spire；14, internal plug；141, First seal convexity；15, sealing gasket；200, bottleneck structure；201, inner wall；202, outer wall；203, auxiliary section；205, roof.

Specific embodiment

In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.

It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes Any and all combinations of one or more related listed items.

Please refer to Fig. 1-3, a kind of sealing structure 100 includes lid 10, and the lid 10 includes top bodies 11, side wall 12, spire 13, internal plug 14 and sealing gasket 15, the side wall 12 are fixed on the top bodies 11, and the spire 13 is solid Due on the side wall 12, the internal plug 14 and the sealing gasket 15 are located at 10 inside of lid and are fixed on the top Main body 11, a bottleneck structure 200 include inner wall 201, outer wall 202, auxiliary section 203 and roof 205, and the spire 13 screws in institute After stating auxiliary section 203, the sealing gasket 15 fits in the roof 205, and the internal plug 14 fits in the inner wall 201 and carries out Sealing, improve bottle cap bottleneck damage or the bottle of scratch and the biggish bottle of size fluctuation above sealability, with The sealing leak angle of monolithic lid be greater than bridge cut-off angle be first abscission ring back leak airway dysfunction and biplate lid damage with bottleneck or the bottle of scratch The sealability of son and the biggish bottle of size fluctuation.

Preferably, the internal plug 14 includes the first seal convexity 141, and first seal convexity 141 fits in described Wall 201, for the internal plug 14 perpendicular to the top bodies 11,141 side of the first seal convexity is in arc-shaped, and described first Seal convexity 141 is laterally in the inner wall 201, further improves the effect of sealing.

Preferably, the sealing gasket 15 is between the side wall 12 and the internal plug 14, the bottleneck structure 200 Between the side wall 12 and the internal plug 14, the outer diameter of the sealing gasket 15 is greater than the outer diameter of the outer wall 202, described interior Plug 14 is greater than institute along the direction extension perpendicular to the top bodies 11, the distance of the internal plug 14 to the top bodies 11 The distance that the top 205 is arrived in auxiliary section 203 is stated, sealing leak angle can be increased by lengthening internal plug, and then realize sealing leak It is first abscission ring back leak airway dysfunction that angle, which is greater than bridge cut-off angle,.

Preferably, in a ring, the inner wall 201 is perpendicular to the top bodies 11, the sealing for the sealing gasket 15 The section of liner 15 is combined with the top bodies 11 by injection molding or compression molding, the sealing gasket 15 Section is square trapezoidal round or semicircle, and the sealing gasket 15 can also be adjusted to other shapes according to demand, due to The sealing gasket 15 is made of elastic material and the sealing of softer and bottle many places, can be obviously improved bottle cap and damage in bottleneck Or the sealability above the biggish bottle of bottle and size fluctuation of scratch.

Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims (10)

1. a kind of sealing structure, including lid, it is characterised in that: the lid includes top bodies, side wall, spire, internal plug And sealing gasket, the side wall are fixed on the top bodies, the spire is fixed on the side wall, the internal plug and institute It states sealing gasket to be located on the inside of the lid and be fixed on the top bodies, a bottleneck structure includes inner wall, outer wall, auxiliary section And roof, after the spire screws in the auxiliary section, the sealing gasket fits in the roof, and the internal plug fits in institute Inner wall is stated to be sealed.

2. sealing structure as described in claim 1, it is characterised in that: the internal plug include the first seal convexity, described first Seal convexity fits in the inner wall.

3. sealing structure as claimed in claim 2, it is characterised in that: the internal plug is perpendicular to the top bodies.

4. sealing structure as claimed in claim 2, it is characterised in that: first seal convexity side is in arc-shaped, described First seal convexity is laterally in the inner wall.

5. sealing structure as described in claim 1, it is characterised in that: the sealing gasket is located at the side wall and the internal plug Between, the bottleneck structure is between the side wall and the internal plug.

6. sealing structure as described in claim 1, it is characterised in that: the outer diameter of the sealing gasket is greater than the outer of the outer wall Diameter.

7. sealing structure as described in claim 1, it is characterised in that: the internal plug is along the side perpendicular to the top bodies To extension, the distance of the internal plug to the top bodies is greater than the auxiliary section to the distance at the top.

8. sealing structure as described in claim 1, it is characterised in that: the sealing gasket in a ring, the sealing gasket Section is combined with the top bodies by injection molding or compression molding.

9. sealing structure as described in claim 1, it is characterised in that: the section of the sealing gasket is square trapezoidal or round Shape or semicircle.

10. sealing structure as described in claim 1, it is characterised in that: the inner wall is perpendicular to the top bodies.