CN213169310U

CN213169310U - Low-torque bottle cap

Info

Publication number: CN213169310U
Application number: CN202021637853.3U
Authority: CN
Inventors: 曾智
Original assignee: Suzhou Liankai Precision Mould Co ltd
Current assignee: Suzhou Liankai Precision Mould Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-05-11
Anticipated expiration: 2030-08-07

Abstract

The utility model relates to a bottle lid field discloses a low moment of torsion bottle lid, include: the bottle cap comprises a bottle cap side part and a bottle cap cover part, wherein an inner thread matched with an outer thread at a bottle opening is formed in the inner side wall of the bottle cap side part, and an inner sealing ring in interference fit with the inner wall of the bottle opening and an outer sealing ring in fit and abutted against the outer wall of the bottle opening are formed in the inner surface of the bottle cap cover part; a plurality of protrusions are arranged on the internal thread of the side portion of the bottle cap and distributed along the spiral direction of the internal thread. In this way, the utility model discloses can reduce the closing cap moment of torsion between bottle lid and the bottle embryo and the moment of torsion of uncapping, convenient to use on guaranteeing the basis of leakproofness between bottle lid and the bottle embryo.

Description

Low-torque bottle cap

Technical Field

The utility model relates to a bottle lid field especially relates to a low moment of torsion bottle lid.

Background

In general, the cap-closing torque and the cap-opening torque of the bottle cap are small, certain risks are brought to the sealing performance of a package, the problems of poor air tightness, liquid leakage and the like are easy to occur, and the beverage is damaged or lost; the opening torsion is large, the opening difficulty of the package is increased, the package needs to be opened by other external force, the opening difficulty of a consumer is increased, and accidents such as scratching of hands and the like caused by opening of the package are possible.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a low moment of torsion bottle lid, can reduce the closing cap moment of torsion between bottle lid and the bottle embryo and the moment of torsion of uncapping on guaranteeing the basis of leakproofness between bottle lid and the bottle embryo.

In order to solve the technical problem, the utility model discloses a technical scheme be: provided is a low torque bottle cap, including: the bottle cap comprises a bottle cap side part and a bottle cap cover part, wherein an inner thread matched with an outer thread at a bottle opening is formed in the inner side wall of the bottle cap side part, and an inner sealing ring in interference fit with the inner wall of the bottle opening and an outer sealing ring in fit and abutted against the outer wall of the bottle opening are formed in the inner surface of the bottle cap cover part; a plurality of protrusions are arranged on the internal thread of the side portion of the bottle cap and distributed along the spiral direction of the internal thread.

Preferably, the axial height of the inner sealing ring is greater than the distance from the internal thread to the cap portion of the bottle cap, a circle of annular convex structure is arranged on the outer side wall of the inner sealing ring, and the annular convex structure is not opposite to the outer sealing ring.

Preferably, the cross section of the annular protrusion structure is triangular.

Preferably, the axial height of the outer sealing ring is smaller than the distance from the internal thread to the cap portion of the bottle cap.

Preferably, the end of the outer sealing ring is provided with a chamfer.

Preferably, the protrusion is located on the internal thread near the inclined side wall of the cap portion of the bottle cap.

Preferably, the side part of the bottle cap is connected with an anti-theft ring, and a buckle matched with the upper lock ring on the bottle mouth is arranged on the inner side wall of the anti-theft ring.

The utility model has the advantages that: the utility model discloses can reduce the closing cap moment of torsion between bottle lid and the bottle embryo and the moment of torsion of uncapping on the basis of guaranteeing the leakproofness between bottle lid and the bottle embryo, make things convenient for opening and screwing of bottle lid, the usability is good. The axial height of the inner sealing ring is larger than the distance from the internal thread to the bottle cap cover part, and the design of the annular bulge structure reduces the contact surface between the inner sealing ring and the inner wall of the bottle mouth, so that the packing force of the inner sealing ring on the inner wall of the bottle mouth can be reduced, the sealing torque and the opening torque of the bottle cap are reduced again, and the interference fit between the inner sealing ring and the inner wall of the bottle mouth can be effectively ensured; the axial height of the outer sealing ring is smaller than the distance from the internal thread to the cap part of the bottle cap, so that the contact surface between the outer sealing ring and the outer wall of the bottle mouth can be reduced, the tightening force of the outer sealing ring on the outer wall of the bottle mouth is reduced, and the capping torque and the opening torque of the bottle cap are further reduced; the end part of the outer sealing ring is provided with a chamfer, so that the outer sealing ring can be well matched and abutted against the outer wall of the bottle mouth, the sealing effect is ensured, and the sealing torque and the opening torque of the bottle cap are further reduced. The bottle mouth can be tightly wrapped by the cooperation of the buckle and the lock ring, and the sealing connection effect of the bottle cap is ensured.

Drawings

Fig. 1 is a schematic cross-sectional view of a preferred embodiment of a low-torque bottle cap according to the present invention.

The parts in the drawings are numbered as follows: 1. the side part of the bottle cap; 11. an internal thread; 12. a boss portion; 2. a cap portion of the bottle cap; 21. an inner seal ring; 22. an outer seal ring; 3. an anti-theft ring; 31. and (5) buckling.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1, an embodiment of the present invention includes:

a low torque bottle cap comprises a bottle cap side portion 1 for fitting connection with a bottle mouth of a bottle blank and a bottle cap lid portion 2 for sealing an opening of the bottle blank. The inner side wall of the bottle cap side part 1 is provided with an internal thread 11 matched with the external thread at the bottle mouth of the bottle blank; the inner surface of the bottle cap cover part 2 is provided with an inner sealing ring 21 which is in interference fit with the inner wall of the bottle mouth and an outer sealing ring 22 which is in fit and abutted against the outer wall of the bottle mouth, the inner sealing ring 21 can ensure the air tightness of a product in the bottle after the bottle cap is in fit connection with a bottle blank, and the outer sealing ring 22 can further assist in ensuring the air tightness of the product. The end part, far away from the bottle cap cover part 2, of the bottle cap side part 1 is connected with an anti-theft ring 3, a buckle 31 used for being matched with a bottle mouth locking ring is arranged on the inner side wall of the anti-theft ring 3, and the bottle mouth can be tightly wrapped by the buckle 31 in matching with the bottle mouth locking ring. A plurality of protrusions 12 are arranged on the internal thread 11 of the bottle cap side portion 1, and the plurality of protrusions 12 are uniformly distributed along the spiral direction of the internal thread 11; the convex part 12 can change the surface contact fit between the threads into the point fit of multi-point contact, thereby reducing the contact area and effectively reducing the closing cap torque and the opening torque of the bottle cap. The convex part 12 is positioned on the inner thread 11 and close to the inclined side wall of the bottle cap cover part 2, so that the thread sealing effect is better, and the bottle cap is more convenient to open and close. The axial height of the inner sealing ring 21 is greater than the distance from the internal thread 11 to the bottle cap cover portion 2, a circle of annular convex structure is arranged on the outer side wall of the inner sealing ring 21, the annular convex structure is not opposite to the outer sealing ring 22, and the cross section of the annular convex structure is triangular; this structural design has reduced the contact surface of interior sealing ring 21 with the bottleneck inner wall, can reduce the packing power of interior sealing ring 21 to the bottleneck inner wall to reduced the closing cap moment of torsion and the opening moment of torsion of bottle lid, simultaneously again can effectual assurance interior sealing ring 21 and the interference fit between the bottleneck inner wall. The axial height of the outer sealing ring 22 is smaller than the distance from the internal thread 11 to the bottle cap cover part 2, namely the outer sealing ring 22 is not in the coverage range of the internal thread 11, so that the contact surface between the outer sealing ring 22 and the outer wall of the bottle opening can be reduced, the tightening force of the outer sealing ring 22 on the outer wall of the bottle opening is reduced, and the capping torque and the opening torque of the bottle cap are further reduced again; the end part of the outer sealing ring 22 is provided with a chamfer, so that the outer sealing ring 22 can be well matched and abutted against the outer wall of a bottle mouth, the sealing effect is ensured, and the sealing torque and the opening torque of the bottle cap are further reduced.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A low torque bottle cap, comprising: the bottle cap comprises a bottle cap side part and a bottle cap cover part, wherein an inner thread matched with an outer thread at a bottle opening is formed in the inner side wall of the bottle cap side part, and an inner sealing ring in interference fit with the inner wall of the bottle opening and an outer sealing ring in fit and abutted against the outer wall of the bottle opening are formed in the inner surface of the bottle cap cover part; a plurality of protrusions are arranged on the internal thread of the side portion of the bottle cap and distributed along the spiral direction of the internal thread.

2. A low-torque bottle cap according to claim 1, wherein: the axial height of the inner sealing ring is larger than the distance from the internal thread to the bottle cap cover portion, a circle of annular convex structure is arranged on the outer side wall of the inner sealing ring, and the annular convex structure is not opposite to the outer sealing ring.

3. A low-torque bottle cap according to claim 2, wherein: the cross section of the annular bulge structure is triangular.

4. A low torque bottle cap according to claim 1, 2 or 3, wherein: the axial height of the outer sealing ring is smaller than the distance from the internal thread to the cover part of the bottle cap.

5. The low-torque bottle cap according to claim 4, wherein: the end part of the outer sealing ring is provided with a chamfer.

6. A low-torque bottle cap according to claim 1, wherein: the bulge is located on the internal thread and close to the inclined side wall of the bottle cap cover.

7. A low-torque bottle cap according to claim 1, wherein: the bottle cap is characterized in that an anti-theft ring is connected to the side portion of the bottle cap, and a buckle matched with the locking ring on the bottle mouth is arranged on the inner side wall of the anti-theft ring.