TWM609339U - Improved bottle mouth structure - Google Patents

Abstract

A bottle mouth structure improvement, the bottle mouth structure is combined with a bottle cap with an inner sealing ring; the bottle mouth structure includes: a tube neck, the outer wall of the tube neck is sequentially provided with a thread section and a stopper The retaining ring, and a limiting portion; characterized in that: the top end of the tube neck is formed with a rim structure; the rim structure includes: an arc convex portion formed along the inner circumferential surface of the rim structure, and formed on the mouth A top surface of the top surface of the rim structure, and a cut corner formed along the inner edge of the top surface; the bottle cap is combined with the bottle mouth structure, and the inner sealing ring extends into the rim structure and connects with the mouth structure. The arc convex part is in close contact.

Description

Improved bottle mouth structure

This creation involves the mouth of a plastic bottle.

The mouth of the plastic container is screwed to the bottle cap. In the past, the bottle mouth design was based on the consideration of sealing with the bottle cap. In addition to changing the thread structure, measures were taken to increase the relative contact surface between the cap and the bottle mouth.

The typical bottle mouth shape is that the inner diameter of the top of the bottle mouth is the same as the inner diameter of the neck of the bottle neck, and the angle is 90 degrees, forming a wide and thick top, and the inner wall of the neck near the top of the bottle neck is a vertical surface. The bottle mouth is combined with the bottle cap, the top of the bottle mouth is in contact with the inner top surface of the bottle cap, and the inner wall of the tube neck is in vertical contact with the inner sealing ring of the bottle cap.

The above-mentioned typical bottle mouth shape makes the size of bottle mouth and bottle cap must maintain a high degree of accuracy. However, based on the material characteristics of the bottle cap and bottle mouth and the influence of the process or filling process, the above-mentioned height is matched accurately. Sex is not easy to maintain, and there are potential problems with inaccurate sealing.

In order to solve the above problems, this creation proposes an improvement of the bottle mouth structure.

Technical features of this creation:

A bottle mouth structure improvement, the bottle mouth structure comprising: a tube neck, the outer wall of the tube neck is sequentially provided with a threaded section, a stop ring, and a limiting part from top to bottom; characterized in that: the tube neck A rim structure is formed at the top end; the rim structure includes: an arc convex portion formed along the inner circumferential surface of the rim structure, a top surface formed on the top surface of the rim structure, and a rim structure along the top surface All corners formed from the inner edge of the face.

The purpose of this creation:

The bottle mouth structure is combined with a bottle cap with an inner sealing ring, the bottle cap is encapsulated in the bottle mouth structure, the inner top surface of the cap is sealed against the top surface of the rim structure, and the inner sealing ring extends into The rim structure is in close contact with the arc convex part. The inner sealing ring will be slightly inwardly constricted due to the push of the arc convex portion, and the elasticity of the plastic causes the physically deformed inner sealing ring to produce an elastic force on the arc convex portion. The elastic force The inner sealing ring is more closely contacted with the arc convex part, and the sealing effect is improved.

The cut angle is relative to the outer included angle where the inner sealing ring and the bottle cap intersect. The cut angle can improve the elasticity of the physical deformation of the inner sealing ring and prevent the inner sealing ring from being broken.

10: tube neck

11: Thread section

12: Stop ring

13: Limiting part

20: Mouth structure

21: Arc convex part

22: top noodle

23: cut corner

24: recess

30: bottle cap

31: cap

32: Annular side wall

33: safety ring

35: Thread

36: inner sealing ring

37: stop

A: Outer included angle

R1: Inner diameter of arc convex part

R2: tube neck inner diameter

R3: Outer diameter of inner seal ring

[Picture 1] is a plan view of the bottle mouth of this creation.

[Figure 2] is a cross-sectional view of the bottle mouth of this creation.

[Figure 3] is a partial cross-sectional view of the bottle mouth of this creation.

[Figure 4] is an exploded cross-sectional view of the bottle mouth and cap of this creation.

[Figure 5] is a sectional view of the combination of the mouth and the cap of this creation.

In order to facilitate the description of the central idea of the creation in the column of the above-mentioned new content, specific examples are used to express it. The various objects in the embodiment are in accordance with the proportions, sizes, and sizes suitable for illustration. Deformation amount or displacement amount is drawn, rather than drawn according to the actual component's proportions, and shall be described first.

As shown in Figs. 1 to 3, the bottle mouth structure of the present creation is formed of plastic, including a neck 10 and a rim structure 20 formed on the top of the neck 10.

The outer wall of the neck 10 is sequentially provided with a threaded section 11, a stop ring 12, and a limiting portion 13 from top to bottom.

The lip structure 20 includes: an arc protrusion 21 formed along the inner circumferential surface of the lip structure 20, a top surface 22 formed on the top surface of the lip structure 20, and a top surface 22 formed along the top surface 22 is formed by the inner edge of the corner 23. Preferably, a concave portion 24 is formed on the outer circumferential surface of the lip structure 20 corresponding to the arc convex portion 21, so as to reduce the structural thickness of the arc convex portion 21. The inner diameter R1 of an arc protrusion formed by the arc protrusion 21 is smaller than the inner diameter R2 of the neck.

As shown in Fig. 4, a bottle cap 30, which is integrally formed of plastic, includes a cap top 31, an annular side wall 32 extending vertically downward from the circumference of the cap top 31, and a plurality of breakable The bridging point is connected to a safety ring 33 at the bottom end of the annular side wall 32, and an inner wall of the safety ring 33 is provided with a stopper 37. The inner surface of the annular side wall 32 is provided with a thread 35. An inner sealing ring 36 protrudes downward from the inner wall of the cover 31. The outer diameter R3 of the inner sealing ring 36 is slightly smaller than the inner diameter R1 of the arc protrusion.

As shown in Fig. 5, the bottle cap 30 is encapsulated in the bottle mouth structure. The thread 35 of the bottle cap 30 is combined with the threaded section 11 of the neck 10, the safety ring 33 is located at the limiting portion 13 of the neck 10, and the stopper 37 is constantly located below the stop ring 12 of the neck 10 . The inner top surface of the cap 31 is sealed against the top surface 22 of the rim structure, the inner sealing ring 36 is in close contact with the arc protrusion 21, and the cut corner 23 is relative to the inner sealing ring 36 and the bottle cap 30 intersecting outer angle A. Since the outer diameter R3 of the inner seal ring 36 is slightly smaller than the inner diameter R1 of the arc convex portion, the inner seal ring 36 will be slightly inwardly constricted due to the push of the arc convex portion 21, and the elasticity of the plastic makes the physical deformation The deformed inner sealing ring 36 has an elastic effect on the arc protrusion 21 The elastic force makes the inner sealing ring 36 more closely contact the arc protrusion 21, which improves the sealing effect.

In addition, the chamfered angle 23 relative to the outer included angle A of the inner sealing ring 36 and the bottle cap 30 allows the outer included angle A to have a relatively wide angle variability, and enhances the physical deformation of the inner sealing ring 36 The elasticity prevents the inner sealing ring 36 from breaking.

10: tube neck

11: Thread section

12: Stop ring

13: Limiting part

20: Mouth structure

21: Arc convex part

22: top noodle

23: cut corner

24: recess

R1: Inner diameter of arc convex part

R2: tube neck inner diameter

Claims (3)

A bottle mouth structure improvement, the bottle mouth structure is combined with a bottle cap with an inner sealing ring; the bottle mouth structure includes: a tube neck, the outer wall of the tube neck is sequentially provided with a thread segment and a stopper The retaining ring, and a limit part; it is characterized by: The top of the tube neck is formed with an edge structure; The lip structure includes: an arc protrusion formed along the inner circumferential surface of the lip structure, a top surface formed on the top surface of the lip structure, and a top surface formed along the inner edge of the top surface All angles The outer diameter of the inner sealing ring of the bottle cap is smaller than the inner diameter of the arc protrusion formed by the arc protrusion; the bottle cap is combined with the bottle mouth structure, and the inner sealing ring extends into the mouth edge structure and is connected to the arc protrusion The cut-off angle is in close contact with the inner sealing ring and the outer included angle where the bottle cap intersects. The bottle mouth structure improvement according to claim 1, wherein a concave portion is formed on the outer circumferential surface of the mouth edge structure corresponding to the curved convex portion. The bottle mouth structure improvement according to claim 1, wherein the inner diameter of an arc protrusion formed by the arc protrusion is smaller than the inner diameter of the neck.

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