Composite bottle cap with self-locking function

Abstract

The utility model discloses a composite bottle cap with a self-locking function, which belongs to the technical field of bottle caps and comprises a bottle cap body, a fixed shell and a self-locking cushion layer, the bottle cap body comprises a bottle cap top surface, a bottle cap side surface and a bottle cap opening, internal threads are arranged at one end of the inner wall of the bottle cap side surface close to the bottle cap opening, and the fixed shell is arranged at one end in the bottle cap body close to the bottle cap top surface. The fixed shell is provided with an annular fixed groove with an opening facing a bottle cap opening, and the self-locking cushion layer is arranged in the fixed groove. The self-locking cushion layer is hollow and forms a compression cavity and an expansion cavity which are communicated with each other; the surface of the self-locking end is sleeved with a self-locking block. The fixed shell is provided with a self-locking hole matched with the self-locking block, and an opening of the self-locking hole faces the axis of the bottle cap body. The composite bottle cap can be automatically locked with the bottle body in the screwing process, and the sealing performance of the composite bottle cap and the bottle body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle caps, in particular to a composite bottle cap with a self-locking function. Background Art

[0002] At present, in the production process of bottle caps, the skirt at the bottom of the bottle cap is usually made by ring cutting. The skirt of the bottle cap is clamped under the thread of the bottle mouth to achieve the sealing of the bottle cap and is not easy to loosen, and the integrity of the skirt can be used as a basis for judging whether it has been opened. Therefore, the skirt of the bottle cap can improve the sealing and safety of the bottle body; however, for bottle caps made of metal materials such as aluminum, a number of adhesion points originally fixed to the skirt will remain on the edge of the opening after the bottle cap is opened, so that the edge of the bottle cap can easily cut the human body, thereby posing a safety hazard. At present, some metal bottle caps use structures such as buckles arranged on the inside to improve the sealing of the bottle body before the first opening. These structures increase the torque required when the bottle body is opened for the first time by increasing friction, etc., but both the skirt and the buckle structure are disposable structures. For the opened bottle body and bottle cap, it is difficult for the bottle cap to keep the bottle body in good sealing. During use, the bottle cap is easily loosened due to external factors such as friction and vibration, resulting in leakage of objects contained in the bottle body.

[0003] The Chinese patent with publication number CN205186861U discloses an anti-theft self-locking bottle cap and a bottle using the bottle cap. The anti-theft self-locking bottle cap comprises a bottle cap, an inner side wall of the bottle cap is provided with an internal thread, and the bottle cap near the opening edge is sheared with more than one spring piece bent toward the center of the bottle cap to form a clip, and more than one clip is evenly arranged along the circumferential direction of the bottle cap, and the spring piece is sheared on the bottle cap near the opening edge along the horizontal direction; the above-mentioned self-locking bottle cap is locked with the bottle through the clip, and when the self-locking bottle cap is twisted to unseal the bottle, the protrusion at the bottle mouth will contact with the clip to make the clip collapse and fold inwardly, thereby increasing the torque required for the first unseal of the bottle, and observing the integrity of the clip can determine whether the bottle has been unsealed, but after the clip collapses and folds, the bottle cap is locked with the bottle again, which makes the bottle cap easy to loosen under the influence of external factors such as friction and vibration, so there is still room for improvement. Utility Model Content

[0004] In view of the technical defects existing in the background technology, the utility model proposes a composite bottle cap with a self-locking function, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0005] A composite bottle cap with a self-locking function, comprising a bottle cap body, a fixed shell, and a self-locking cushion layer, wherein the bottle cap body comprises a bottle cap top surface and a bottle cap side surface, wherein the bottle cap side surface is away from one end of the bottle cap top surface to form a bottle cap opening, and an inner wall of the bottle cap side surface is provided with an internal thread at one end close to the bottle cap opening, the fixed shell is provided at one end of the bottle cap body close to the bottle cap top surface, the fixed shell is provided with a circular fixing groove with an opening facing the bottle cap opening, and the self-locking cushion layer is provided in the fixing groove;

[0006] The self-locking pad is hollow inside and forms a circular compression cavity. The self-locking pad is provided with a self-locking end extending toward the internal thread. The end of the self-locking end extending inside is hollow to form an expansion cavity. The expansion cavity is connected to the compression cavity, and the compression cavity and the expansion cavity form a sealed space.

[0007] The self-locking end surface is sleeved with a self-locking block, the fixed shell is provided with a self-locking hole matching the self-locking block, and the opening of the self-locking hole faces the axis of the bottle cap body.

[0008] As a further technical solution of the utility model, the inner wall of the fixing groove abuts against the surface of the self-locking cushion layer, and a self-locking channel matching the self-locking end is provided in the fixing shell, and the self-locking channel is connected to the self-locking hole.

[0009] As a further technical solution of the utility model, the self-locking ends are provided with at least two, and the number of the self-locking blocks matches the self-locking ends and they are arranged one by one.

[0010] As a further technical solution of the utility model, a circle of anti-slip grooves is provided on the outer side of the bottle cap near one end of the top surface of the bottle cap, and the anti-slip grooves are composed of a plurality of grooves.

[0011] As a further technical solution of the utility model, the anti-slip pattern forms a plurality of convex patterns on the inner wall of the side of the bottle cap, and the surface of the convex patterns abuts against the surface of the fixed shell.

[0012] As a further technical solution of the utility model, the side surface of the bottle cap close to one end of the bottle cap opening is folded outward to form a curled edge.

[0013] As a further technical solution of the utility model, the top surface of the bottle cap and the side surface of the bottle cap are integrated.

[0014] The beneficial effects of the utility model are:

[0015] The composite bottle cap of the utility model is used for tightening the bottle mouth of the bottle body, and the self-locking cushion layer is squeezed by the bottle mouth to make the air in the compression cavity move toward the expansion cavity to make the self-locking end expand. During the expansion of the self-locking end, a thrust force is generated on the self-locking block to make the self-locking block abut against the bottle mouth, so that the composite bottle cap clamps the bottle mouth to increase the torque required when the composite bottle cap is loosened, thereby realizing automatic locking of the composite bottle cap and the bottle body. In addition, the component that realizes automatic locking during the loosening of the composite bottle cap can maintain the structural integrity, so that the composite bottle cap can realize automatic locking each time it is tightened, thereby improving the sealing performance of the composite bottle cap and the bottle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional view of a composite bottle cap with a self-locking function.

[0017] Figure 2 yes Figure 1 Partial schematic diagram at point A in the middle.

[0018] Figure 3 The invention discloses a cross-sectional view of a composite bottle cap with a self-locking function and a bottle body in a locked state.

[0019] Figure 4 yes Figure 3 A partial schematic diagram of point B in the middle.

[0020] Figure 5 It is a front view of a composite bottle cap with a self-locking function.

[0021] Among them: bottle cap body 1, bottle cap top surface 11, bottle cap side surface 12, bottle cap mouth 13, internal thread 14, anti-slip pattern 15, curling 16, fixed shell 2, fixed groove 21, self-locking hole 22, self-locking channel 23, self-locking cushion layer 3, compression cavity 31, self-locking end 32, expansion cavity 33, self-locking block 4, bottle body 5, self-locking groove 51. DETAILED DESCRIPTION

[0022] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0023] like Figure 1-5As shown, a composite bottle cap with a self-locking function includes a bottle cap body 1, a fixed shell 2, and a self-locking cushion layer 3. The bottle cap body 1 includes a bottle cap top surface 11 and a bottle cap side surface 12. The bottle cap side surface 12 is away from the bottle cap top surface 11 to form a bottle cap opening 13. The inner wall of the bottle cap side surface 12 is close to the bottle cap opening and is provided with an internal thread 14. The fixed shell 2 is arranged in the bottle cap body 1 near the bottle cap top surface 11. The fixed shell 2 is provided with a circular fixing groove 21 with an opening facing the bottle cap opening 13. The self-locking cushion layer 3 is arranged in the fixing groove 21.

[0024] The self-locking gasket 3 is hollow inside and forms a circular compression cavity 31. The self-locking gasket 3 is provided with at least two self-locking ends 32 extending toward the internal thread 14. The ends of the self-locking ends 32 are hollow inside to form an expansion cavity 33. The expansion cavity 33 is connected to the compression cavity 31. The compression cavity 31 and the expansion cavity 33 form a sealed space.

[0025] A self-locking block 4 is sleeved on the surface of the self-locking end 32 , and the fixed housing 2 is provided with a self-locking hole 22 matching the self-locking block 4 , and the opening of the self-locking hole 22 faces the axis of the bottle cap body 1 .

[0026] The composite bottle cap of the utility model needs to be used in conjunction with a bottle body 5 for containing liquids and other articles. When in use, the composite bottle cap is tightened at the bottle mouth through the thread matching the internal thread 14 at the bottle mouth of the bottle body 5. The bottle cap body 1 is preferably made of metal materials such as aluminum. The bottle cap top surface 11 and the bottle cap side surface 12 are integrated to form the bottle cap body 1. The bottle cap body 1 is usually stamped into shape through a common stamping process, and then the inner wall of the bottle cap side surface 12 of the bottle cap body 1 is formed into an internal thread 14 through a common metal bottle cap rolling process. Before the bottle cap body 1 is subjected to the thread rolling process, the fixed shell 2 and the self-locking gasket 3 are first fixed, and then the fixed shell 2 and the self-locking gasket 3 are embedded in the bottle cap body 1 at one end close to the bottle cap top surface 11, and then the thread rolling process is performed to process the internal thread 14. This can avoid the inner diameter of the bottle cap body 1 at one end close to the bottle cap mouth 13 being reduced after the internal thread 14 is processed, which makes it difficult for the fixed shell 2 to be embedded in the bottle cap body 1, and the internal thread 14 can limit the fixed shell 2 to prevent the fixed shell 2 and the self-locking gasket 3 from falling off from the bottle cap body 1.

[0027] The fixed shell 2 of the utility model is preferably made of polypropylene with good elasticity, dimensional stability and other properties, and can also be made of other materials with similar properties. Good elasticity and dimensional stability can make the fixed shell 2 easier to embed into the bottle cap body 1 and firmly inlay and fix it, and at the same time achieve fixation with the self-locking cushion layer 3; the self-locking cushion layer 3 is preferably made of silicone with good resilience, air tightness and other properties, the self-locking block 4 can be made of polypropylene, metal aluminum and other materials, the end of the self-locking end 32 is fixedly connected to the self-locking block 4, and when the composite bottle cap is tightened and fixed on the bottle body 5, the bottle mouth of the bottle body 5 will pass through the fixing groove 21 and squeeze the self-locking cushion layer 3, and the self-locking cushion layer 3 will compress the cavity 31 after being squeezed. Air will flow into the expansion cavity 33 and increase the air pressure inside the expansion cavity 33. At this time, the surface of the self-locking end 32 will expand. Due to the internal space limitation of the fixed shell 2, the self-locking end 32 will expand toward the outside of the self-locking hole 22, thereby generating a thrust from the self-locking hole 22 toward the axial line of the bottle cap body 1 on the self-locking block 4. Under the action of the thrust, the self-locking block 4 moves toward the axial line of the bottle cap body 1 and abuts against the bottle mouth of the bottle body 5. The composite bottle cap can clamp the bottle body 5 through the self-locking end 32 and the self-locking block 4 to achieve locking of the composite bottle cap and the bottle body 5. After the composite bottle cap is loosened, the self-locking cushion layer 3 and the self-locking end 32 will rebound to their original shape, and the self-locking block 4 will re-enter the self-locking hole 22 under the action of the tension generated by the contraction of the self-locking end 32 to achieve reset.

[0028] After adopting the above structure, it needs to be further explained that, a plurality of self-locking grooves 51 are preferably arranged around the bottle mouth of the bottle body 5 matching the composite bottle cap, and the length and width of the self-locking grooves 51 are slightly larger than the length and width of the self-locking block 4 close to the axial center line of the bottle cap body 1. When the composite bottle cap is tightened to make the self-locking block 4 abut against the bottle mouth of the bottle body 5, the end of the self-locking block 4 can enter the self-locking groove 51, so that the composite bottle cap and the bottle body 5 are in a locked state, thereby increasing the torque required for the composite bottle cap to continue to be twisted or loosened. The composite bottle cap completes the automatic locking with the bottle body 5 during the tightening process, avoiding the composite bottle cap from being easily loosened by external factors such as friction and vibration, and the structure for realizing automatic locking is not destroyed each time the composite bottle cap is twisted. Even the composite bottle cap after opening can also be automatically locked after each tightening, thereby improving the sealing between the composite bottle cap and the bottle body 5.

[0029] Furthermore, the self-locking block 4 is arranged as an inclined surface on one side facing the tightening direction of the composite bottle cap. During the tightening process of the composite bottle cap, the self-locking block 4 can contact the inner wall of the self-locking groove 51 through the inclined surface to reduce the resistance therebetween, making the composite bottle cap easier to tighten. When loosening the composite bottle cap, the self-locking block 4 can contact the self-locking groove 51 through the non-inclined surface to increase the resistance therebetween, making the composite bottle cap require a larger torque to loosen, thereby improving the locking strength of the composite bottle cap and the bottle body 5.

[0030] To sum up, during the process of tightening the composite bottle cap of the utility model at the bottle mouth of the bottle body 5, the self-locking cushion layer 3 is squeezed by the bottle mouth to make the air inside the compression cavity 31 move toward the expansion cavity 33 to make the self-locking end 32 expand. During the expansion of the self-locking end 32, a thrust is generated on the self-locking block 4 to make the self-locking block 4 abut against the bottle mouth, so that the composite bottle cap clamps the bottle mouth to increase the torque required when the composite bottle cap is loosened, thereby realizing automatic locking of the composite bottle cap and the bottle body 5. In addition, the component that realizes automatic locking during the process of loosening the composite bottle cap can maintain the structural integrity, so that the composite bottle cap can realize automatic locking each time it is tightened, thereby improving the sealing between the composite bottle cap and the bottle body 5.

[0031] like Figure 1-4 As shown, as one of the preferred embodiments of the utility model, the inner wall of the fixing groove 21 abuts against the surface of the self-locking cushion layer 3, and a self-locking channel 23 matching the self-locking end 32 is provided in the fixing shell 2, and the self-locking channel 23 is connected with the self-locking hole 22; in the process of tightening the composite bottle cap at the bottle mouth of the bottle body 5, the fixing shell 2 abuts against the self-locking cushion layer 3 through the fixing groove 21 to limit the obvious expansion of the self-locking cushion layer 3, and the self-locking channel 23 can control the self-locking end 32 to expand toward the self-locking hole 22, thereby pushing the self-locking block 4 to move toward the bottle mouth and realize automatic locking.

[0032] like Figure 1-4 As shown, as one of the preferred embodiments of the utility model, at least two self-locking ends 32 are provided, and the number of self-locking blocks 4 is matched with the self-locking ends 32 and is arranged one by one; the self-locking ends 32 of the utility model are preferably provided with four, so that the composite bottle cap can be automatically locked by abutting against the bottle body 5 through four self-locking blocks 4, that is, there are four force points between the composite bottle cap and the bottle body 5, which can improve the locking strength of the composite bottle cap and the bottle body 5.

[0033] like Figure 5 As shown, as one of the preferred embodiments of the utility model, a circle of anti-slip grooves 15 are provided on the outer side of the bottle cap side 12 near one end of the bottle cap top surface 11, and the anti-slip grooves 15 are composed of a plurality of grooves; the anti-slip grooves 15 of the utility model are usually formed by a common embossing process, and the anti-slip grooves 15 can increase the resistance between the surface of the bottle cap body 1 and the human hand, thereby increasing the surface friction when twisting the composite bottle cap, making the composite bottle cap easier to twist.

[0034] As one of the preferred embodiments of the utility model, the anti-slip pattern 15 forms a plurality of convex patterns on the inner wall of the side surface 12 of the bottle cap, and the convex pattern surface abuts against the fixed shell 2 on the surface of the fixed shell 2; after the anti-slip pattern 15 is formed on the bottle cap body 1 through the embossing process, the surface will be concave inward, and a circle of concave patterns matching the convex patterns can be provided on the surface of the fixed shell 2, and the convex patterns and the concave patterns are engaged with each other to prevent the fixed shell 2 from rotating in the bottle cap body 1, so that the fixed shell 2 and the bottle cap body 1 can move synchronously during the twisting process of the composite bottle cap.

[0035] like Figure 1 , 3 As shown in Figure 5, as one of the preferred embodiments of the utility model, the side surface 12 of the bottle cap near the end of the bottle cap opening 13 is folded outward to form a curling edge 16; since the bottle cap body 1 is made of metal aluminum as the raw material, the edge of the bottle cap opening 13 will be relatively sharp and easy to cut the human body. After the edge of the bottle cap opening 13 is folded outward to form the curling edge 16 through the common metal bottle cap curling process, the edge of the bottle cap opening 13 will become rounded and not easy to cut the human body.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A composite bottle cap with a self-locking function, comprising a bottle cap body (1), a fixed shell (2), and a self-locking cushion layer (3), characterized in that: The bottle cap body (1) comprises a bottle cap top surface (11) and a bottle cap side surface (12); an end of the bottle cap side surface (12) away from the bottle cap top surface (11) forms a bottle cap opening (13); an inner wall of the bottle cap side surface (12) close to the bottle cap opening is provided with an internal thread (14); the fixed shell (2) is arranged in the bottle cap body (1) close to the bottle cap top surface (11); the fixed shell (2) is provided with a circular fixing groove (21) with an opening facing the bottle cap opening (13); and the self-locking cushion layer (3) is arranged in the fixing groove (21); The self-locking gasket (3) is hollow inside and forms a circular compression cavity (31); the self-locking gasket (3) is provided with a self-locking end (32) extending toward the internal thread (14); the end of the self-locking end (32) is hollow inside to form an expansion cavity (33); the expansion cavity (33) is in communication with the compression cavity (31); the compression cavity (31) and the expansion cavity (33) form a sealed space; A self-locking block (4) is sleeved on the surface of the self-locking end (32), and the fixed housing (2) is provided with a self-locking hole (22) matching the self-locking block (4), wherein the opening of the self-locking hole (22) faces the axis of the bottle cap body (1).

2. The composite bottle cap with self-locking function according to claim 1, characterized in that: The inner wall of the fixing groove (21) abuts against the surface of the self-locking cushion layer (3); a self-locking channel (23) matching the self-locking end (32) is provided in the fixing housing (2); and the self-locking channel (23) is communicated with the self-locking hole (22).

3. The composite bottle cap with self-locking function according to claim 1, characterized in that: At least two of the self-locking ends (32) are provided, and the number of the self-locking blocks (4) provided matches the self-locking ends (32) and is provided one by one in correspondence.

4. The composite bottle cap with self-locking function according to claim 1, characterized in that: A circle of anti-slip grooves (15) is provided on the outer side of the bottle cap side surface (12) near one end of the bottle cap top surface (11), and the anti-slip grooves (15) are composed of a plurality of grooves.

5. The composite bottle cap with self-locking function according to claim 4, characterized in that: The anti-slip pattern (15) forms a plurality of convex patterns on the inner wall of the bottle cap side (12), and the surface of the convex patterns abuts against the surface of the fixed shell (2).

6. The composite bottle cap with self-locking function according to claim 1, characterized in that: One end of the bottle cap side surface (12) close to the bottle cap opening (13) is folded outwards to form a curling edge (16).

7. The composite bottle cap with self-locking function according to claim 1, characterized in that: The bottle cap top surface (11) and the bottle cap side surface (12) are integrally arranged.

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