Bottle cap with high counterweight close-fitting inclusiveness

Abstract

The utility model discloses a bottle cap with strong counter weight close-fitting inclusiveness, which comprises a bottle cap body, the bottle cap body is provided with an installation cavity for installing a counter weight block, an upward convex installation part is arranged in the installation cavity, the counter weight block is sleeved outside the installation part, the outer wall of the installation part is provided with a close-fitting part for being in interference fit with the counter weight block, and the counter weight block is arranged in the close-fitting part. And the close-fitting part can contract in the radial direction of the bottle cap body when being in interference fit with the balancing weight. The balancing weight is tightly matched with the bottle cap through the retractable blades, the blades are designed according to the maximum size of the balancing weight, and the problem that the balancing weight and the blades are matched too loosely is solved; meanwhile, due to the fact that the blades can be contracted, when the actual size of the balancing weight is smaller than the maximum size of the balancing weight, the interference magnitude of the balancing weight is too large, the blades can be extruded, the blades are contracted, and then the problem that the balancing weight and the blades are matched too tightly can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of container packaging, in particular to a bottle cap with a counterweight, which is tightly fitted and has strong inclusiveness. Background Art

[0002] Bottle caps are an important part of food and beverage packaging, and are also the first place where consumers come into contact with products. Bottle caps have the function of keeping the contents of the product sealed, and also have the functions of anti-theft opening and safety. Therefore, they are widely used in bottled products. Therefore, bottle caps are the upstream industries of food, beverage, wine, chemical industry, and pharmaceutical industry, and are key products of bottle container packaging.

[0003] In order to improve the texture and stability of the wine cap, it is usually necessary to increase the weight of the bottle cap by adding a counterweight (usually a metal ring) to the bottle cap. However, in existing bottle caps, in order to improve the stability of the counterweight and prevent the counterweight from shaking during use, the counterweight and the bottle cap are either bonded by colloid or interference fit is made between the counterweight and the bottle cap. The former requires the introduction of colloid and gluing equipment, which will increase the production cost of the bottle cap; while the latter is due to the inner diameter tolerance of the counterweight (metal ring) of plus or minus 0.3mm or even larger. If the metal ring fits the cap too tightly, it will be difficult to assemble, and too tight will cause the plastic cap to deform and cannot be assembled with other accessories, and too loose will not meet the tight fit requirements. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a bottle cap with a counterweight that is tightly fitted and has strong inclusiveness. The counterweight block is tightly fitted to the bottle cap through retractable blades, and the blades are designed according to the maximum size of the counterweight block, so the problem of the counterweight block and the blades being too loose will not occur. At the same time, since the blades are retractable, when the actual size of the counterweight block is smaller than the maximum size of the counterweight block, the counterweight block will have too much interference and will squeeze the blades, causing the blades to shrink, thereby avoiding the problem of the counterweight block and the blades being too tightly fitted.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A bottle cap with a strong tight-fitting and inclusive counterweight, comprising a bottle cap body, wherein the bottle cap body is provided with a mounting cavity for mounting a counterweight block, an upwardly convex mounting portion is provided in the mounting cavity, the counterweight block is sleeved outside the mounting portion, and an outer wall of the mounting portion is provided with a tight-fitting portion for interference fit with the counterweight block, and the tight-fitting portion can shrink along the radial direction of the bottle cap body when interference fit with the counterweight block.

[0007] Furthermore, the tight-fitting portion includes at least two blades that are centrally symmetrically arranged, and a contraction angle is formed between the blades and the outer wall of the mounting portion, and the contraction angle is an acute angle.

[0008] Furthermore, the blade is a plate-shaped structure, and the first vertical side surface of the blade is connected to the outer wall of the mounting portion.

[0009] Furthermore, the second vertical side surface of the blade is provided with an inclined guide surface.

[0010] Furthermore, there are nine blades, which are evenly divided into three groups and distributed on the outer wall of the mounting portion in a circular array.

[0011] Furthermore, the blade and the mounting portion are an integrated structure.

[0012] Furthermore, the counterweight block is a spiral ring structure.

[0013] Furthermore, the counterweight is made of metal material, such as stainless steel.

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

[0015] The counterweight block of the utility model is tightly fitted with the bottle cap through the retractable blades, and the blades are designed according to the maximum size of the counterweight block, so the problem of the counterweight block and the blades being too loose will not occur; at the same time, because the blades are retractable, when the actual size of the counterweight block is smaller than the maximum size of the counterweight block, the counterweight block will have too much interference and squeeze the blades, causing the blades to shrink, thereby avoiding the problem of the counterweight block and the blades being too tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a bottle cap with a strong tolerance and a counterweight tightly fitted in an embodiment of the utility model;

[0017] Figure 2 A cross-sectional view of a bottle cap with a strong containment for a counterweight;

[0018] In the figure, 1. bottle cap body; 2. mounting cavity; 3. mounting part; 4. counterweight block; 5. tight fitting part; 6. blades. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 2 , the utility model provides a technical solution:

[0021] Example:

[0022] like Figure 1 and Figure 2As shown, a bottle cap with a strong tight-fitting and inclusive counterweight comprises a bottle cap body 1, wherein the bottle cap body 1 is provided with a mounting cavity 2 for mounting a counterweight block 4, wherein an upwardly convex mounting portion 3 is provided in the mounting cavity 2, wherein the counterweight block 4 is sleeved outside the mounting portion 3, wherein an outer wall of the mounting portion 3 is provided with a tight-fitting portion 5 for interference fit with the counterweight block 4, wherein the tight-fitting portion 5 can shrink along the radial direction of the bottle cap body 1 when interference fit is made with the counterweight block 4.

[0023] The tight-fitting portion 5 includes at least two blades 6 that are centrally symmetrically arranged, and a contraction angle is formed between the blades 6 and the outer wall of the mounting portion 3, and the contraction angle is an acute angle.

[0024] The blade 6 is a plate-shaped structure, and a first vertical side surface of the blade 6 is connected to an outer wall of the mounting portion 3 .

[0025] The second vertical side surface of the blade 6 is provided with an inclined guide surface, which is used for guiding the counterweight 4 during assembly.

[0026] The blades 6 are provided with nine pieces, which are evenly divided into three groups and distributed in a circular array on the outer wall of the mounting portion 3. The blades 6 are arranged in this way to evenly distribute the force of the three counterweights 4 on the blades 6, thereby ensuring the service life of the blades 6.

[0027] The blade 6 and the mounting portion 3 are an integrated structure. The blade 6 and the mounting portion 3 can be fixed as one by bonding or welding, or can be integrally injection molded.

[0028] The counterweight block 4 is a spiral ring structure. The counterweight block 4 is arranged in this way to facilitate the structure of the bottle cap and to facilitate the assembly of the counterweight block 4 and the bottle cap.

[0029] The counterweight 4 is made of metal material, such as stainless steel.

[0030] After the bottle cap body 1 and the blades 6 are formed, the counterweight block 4 is assembled (tightly) with the bottle cap: the counterweight block 4 is made coaxial with the mounting portion 3, the counterweight block 4 is pressed downward into the bottle cap body 1 and the counterweight block 4 is coaxially sleeved outside the mounting portion 3.

[0031] When the counterweight block 4 is pressed down, the counterweight block 4 will squeeze the blade 6, and the blade 6 will shrink under the squeezing action of the counterweight block 4 (the shrinkage is manifested as a decrease in the angle between the blade 6 and the outer wall of the mounting portion 3). At the same time, the blade 6 has a tendency to reset, which is manifested as providing a tensioning force on the counterweight block 4, thereby making the counterweight block 4 tightly fit on the blade 6.

[0032] With such a configuration, when designing the size of the blade 6, the interference can be designed according to the standard size of the counterweight block 4 + the maximum tolerance (i.e., the maximum size of the counterweight block 4); when the actual size of the counterweight block 4 is smaller than the maximum size of the counterweight block 4, the interference of the counterweight block 4 is too large, which will squeeze the blade 6 and cause the blade 6 to shrink, thereby avoiding the problem of the counterweight block 4 and the blade 6 being too tight. At the same time, since the blade 6 is designed according to the maximum size of the counterweight block 4, the problem of the counterweight block 4 and the blade 6 being too loose will not occur.

[0033] The counterweight block of the utility model is tightly fitted with the bottle cap through the retractable blades, and the blades are designed according to the maximum size of the counterweight block, so the problem of the counterweight block and the blades being too loose will not occur; at the same time, because the blades are retractable, when the actual size of the counterweight block is smaller than the maximum size of the counterweight block, the counterweight block will have too much interference and squeeze the blades, causing the blades to shrink, thereby avoiding the problem of the counterweight block and the blades being too tight.

[0034] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A bottle cap with a tight fit and strong tolerance for counterweights, comprising a bottle cap body, wherein the bottle cap body is provided with a mounting cavity for mounting a counterweight, wherein an upwardly convex mounting portion is provided in the mounting cavity, and the counterweight is sleeved outside the mounting portion, wherein: The outer wall of the mounting portion is provided with a tight fitting portion for interference fit with the counterweight block, and the tight fitting portion can shrink along the radial direction of the bottle cap body when the tight fitting portion and the counterweight block are interference fit; The tight-fitting portion includes at least two blades that are centrally symmetrically arranged, and a contraction angle is formed between the blades and the outer wall of the mounting portion, and the contraction angle is an acute angle.

2. According to claim 1, the bottle cap with tight-fitting weight and strong tolerance is characterized in that: The blade is a plate-shaped structure, and the first vertical side surface of the blade is connected to the outer wall of the mounting portion.

3. The bottle cap with tight-fitting weight according to claim 2 is characterized in that: The second vertical side surface of the blade is provided with an inclined guide surface.

4. The bottle cap with tight-fitting weight according to claim 1 is characterized in that: The blades are provided with nine pieces, which are evenly divided into three groups and distributed on the outer wall of the mounting portion in a circular array.

5. The bottle cap with tight-fitting weight and strong tolerance according to claim 1, characterized in that: The blade and the mounting portion are an integrated structure.

6. The bottle cap with tight-fitting weight and strong tolerance according to claim 1, characterized in that: The counterweight block is a spiral ring structure.

7. The bottle cap with tight-fitting weight and strong tolerance according to claim 6, characterized in that: The counterweight block is made of metal material.

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