A bottle cap

Abstract

The present invention discloses a bottle cap, comprising a main cap 1 and a sub-cap 2, wherein the sub-cap 2 is one or more, and the main cap 1 and the sub-cap 2 are detachably connected or integrally connected, the main cap 1 is provided with an opening piece 3 integral with the main cap 1, the sub-cap 2 is provided with an impact end 4, the opening piece 3 is provided with an impacted end 31, and the upper end or the lower end of the opening piece 3 is provided with a petal-shaped body or a strip-shaped body; the technical solution of the present invention is structurally very suitable for mold making and high-speed product production, the bottle cap is opened simply and labor-savingly, liquid can be used without contacting the liquid flow area of ​​the main cap, the use process is simple and convenient and the cost is low, there is no cost increase compared to the original product, it is more hygienic and convenient, and more suitable for daily use.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging containers, and particularly relates to a bottle cap. Background Art

[0002] In recent years, with the demand for increased portability in life, bottle caps have become a very important necessity in the composition of containers needed in daily life, such as the pull-ring opening bottle caps used in edible oil bottles, seasoning bottles, wine bottles, etc. The structure is as follows Figure 1 and Figure 2 As shown, the bottle cap consists of a sub-cap 2 and a main cap 1. The main cap 1 is provided with an opening piece 3, and a pull ring 9 is connected to the opening piece. When in use, first pry open or unscrew the sub-cap 2, or remove the anti-theft ring 81 on the sub-cap 2 and then open it, hook the pull ring 9 on the main cap with your fingers and pull hard until the opening piece 3 is pulled open, the pulled opening piece 3 is completely separated from the main cap 1 and becomes waste, and after the opening piece 3 is opened, the main cap forms an unobstructed outlet hole 19, and the liquid in the bottle can be directly poured out from the outlet hole 19.

[0003] When the bottle cap is used normally, a certain pulling force is required to pull open the opening piece 3 after the user's finger is inserted into the pull ring 9. This pulling force is basically not available to children and young women. In addition, due to the structure of the bottle cap, the space around the pull ring is narrow, so there is not enough distance to generate accelerated impact pulling force when pulling the pull ring, so the pulling force available is only static pulling force. As a result, the user often fails to pull open the opening piece even after using the greatest force, or the pull ring breaks directly and still cannot pull open the opening piece. What's worse, the pull ring may have burrs and cause pain or scratches on the fingers.

[0004] In addition, since the bottle cap pull ring 9 is arranged at the center of the liquid outlet, it is difficult to avoid touching the surrounding area through which the liquid can flow when the user's fingers are inserted into the pull ring 9 during normal use. If the user's hands carry germs or other substances harmful to the human body, it will directly contaminate the area through which the liquid in the bottle flows, and finally cause the liquid in the bottle to be contaminated, which is harmful to human health when consumed.

[0005] Moreover, the bottle cap of the above structure will directly form an outlet hole 19 without any obstruction after the opening piece 3 is pulled apart from the main cover. When the liquid in the bottle is quickly poured out, the liquid is easy to splash out directly from the outlet hole 19, making it difficult to control the liquid outlet range. Moreover, since the outlet hole 19 is always in a fully open state, the size of the outlet hole 19 cannot be controlled, and thus the flow rate cannot be controlled.

[0006] Furthermore, since the bottle caps of the above structures all have a pull ring structure, they are difficult to design and manufacture the mold structure and produce the product, which restricts the production efficiency to a certain extent.

[0007] Therefore, it is necessary to provide a bottle cap to overcome the shortcomings of the above-mentioned bottle cap, such as it is laborious to pull open the opening piece, the area through which the liquid flows is easily contaminated, the liquid discharge range and state cannot be well controlled, and the liquid discharge flow rate cannot be adjusted. Summary of the invention

[0008] In view of the deficiencies of the prior art, the present invention provides a bottle cap, which is easy and labor-saving to open, and liquid can be used without contacting the liquid flow area of ​​the main cap, so that the drinking process is simple, convenient and low-cost.

[0009] The present invention provides a bottle cap, which comprises a main cap 1 and a sub-cap 2, wherein the sub-cap 2 is one or more, and the main cap 1 and the sub-cap 2 are detachably connected or integrally connected, the main cap 1 is provided with an opening piece 3 which is integral with the main cap 1, the sub-cap 2 is provided with an impact end 4, the opening piece 3 is provided with an impacted end 31, and the upper end or the lower end of the opening piece 3 is provided with a petal-shaped body or a strip-shaped body.

[0010] Preferably, the lower end of the opening piece 3 is provided with a first petal-shaped body 5 surrounding the outer periphery of the opening piece 3, the upper end of the first petal-shaped body 5 is connected to the outer periphery of the opening piece 3, and the lower end is retracted inward around the center direction of the opening piece 3, the first petal-shaped bodies 5 are arranged at intervals of not less than a single first petal-shaped body 5, the inner diameter of the first petal-shaped body 5 after retracting is less than or equal to the outer diameter of the opening piece 3, and the length of the first petal-shaped body 5 is greater than or equal to the sinking height of the opening piece 3.

[0011] Preferably, the inner surface of the first petal 5 is provided with protrusions 51 arranged vertically, the inner diameter of the protrusion 51 located at the lower end of the first petal 5 is smaller than the outer diameter of the opening piece 3, and the protrusions 51 are arranged axially at equal heights or axially in an upward and downward spiral arrangement.

[0012] Preferably, the lower ends of all the first petal-shaped bodies 5 are connected together through an annular body 53 , and the inner diameter of the annular body 53 is smaller than the outer diameter of the opening piece 3 .

[0013] Preferably, the lower end of the opening piece 3 is provided with a first strip-shaped body 54 surrounding the outer periphery of the opening piece 3, the first strip-shaped bodies 54 are arranged at intervals of not less than a single strip-shaped body, and the length of the first strip-shaped body 54 is greater than or equal to the sinking depth of the opening piece 3; the inner surface of the first strip-shaped body 54 is provided with raised portions 55 arranged vertically, the inner diameter of the raised portion 55 located at the lowermost end of the first strip-shaped body 54 is smaller than the outer diameter of the opening piece 3, and the raised portions 55 are arranged axially at equal heights or axially in an upward and downward spiral arrangement.

[0014] Preferably, the upper end of the opening piece 3 is provided with a second petal-shaped body or a second strip-shaped body surrounding the outer periphery of the opening piece 3, the second petal-shaped body or the second strip-shaped body is arranged at intervals not less than a single petal-shaped body or a single strip-shaped body, the lower end of the second petal-shaped body or the second strip-shaped body is connected to the outer periphery of the opening piece 3 and expands outwardly around the outer periphery of the opening piece 3 in the axial direction, the outer diameter after expansion is greater than or equal to the outer diameter of the opening piece 3, and the length of the second petal-shaped body or the second strip-shaped body is greater than or equal to the sinking depth of the opening piece 3;

[0015] The outer surface of the second petal-shaped body or the second strip-shaped body is provided with vertically arranged protrusions 62, the outer diameter of the protrusion 62 located at the uppermost end of the second petal-shaped body or the second strip-shaped body is larger than the outer diameter of the opening piece 3, and the protrusions 62 on the second petal-shaped body or the second strip-shaped body are distributed at equal heights in the axial direction or are arranged in an up-and-down spiral in the axial direction.

[0016] A groove is provided at the upper top of the second petal-shaped body or the second strip-shaped body, and the bottom of the groove is the impacted end 31 .

[0017] Preferably, the impact end 4 is an annular surface or a whole surface.

[0018] Preferably, the impact end 4 is a tooth-shaped protrusion on the lower end surface inside the auxiliary cover 2.

[0019] Preferably, at least one strip-shaped protrusion 41 is vertically arranged on the inner annular surface of the auxiliary cover 2 , the bottom end of the strip-shaped protrusion 41 is the impact end 4 , and the inner diameter between the strip-shaped protrusions 41 is smaller than the outer diameter of the opening piece 3 .

[0020] Preferably, the auxiliary cover 2 has annular protrusions 42 arranged in an annular pattern, and the top of the annular protrusion is the impact end 4 .

[0021] Preferably, a protrusion is provided on the top of the auxiliary cover 2 , and the top of the protrusion is the impact end 4 .

[0022] Preferably, a raised tear ring 8 is provided on the outer side of the auxiliary cover 2 , and the height of the raised tear ring 8 depends on the sinking depth of the opening piece 3 .

[0023] Preferably, positioning marks and engaging protrusions are provided on the main cover 1 and the auxiliary cover 2, and the positioning marks on the main cover 1 and the auxiliary cover 2 correspond to each other.

[0024] Preferably, the main cover 1 and the auxiliary cover 2 are provided with snap-fitting protrusions and snap-fitting grooves for positioning, and the snap-fitting protrusions or snap-fitting grooves on the main cover 1 and the auxiliary cover 2 cooperate with and correspond to each other.

[0025] Preferably, before the auxiliary cover 2 punches the opening piece 3 , a space of a descending height is reserved or formed between the auxiliary cover 2 and the main cover 1 , and the descending height is greater than or equal to the sinking depth of the opening piece 3 .

[0026] Compared with the closest prior art, the beneficial effects of the present invention are:

[0027] The bottle cap provided by the present invention can directly knock the sub-cap to make the impact end of the sub-cap impact the impacted end of the main cover opening piece without contacting the liquid flow area of ​​the main cover, so that the opening piece sinks and is engaged with the main cover. The engaged opening piece stops at the middle position of the opening hole and just covers the opening hole from the front, so that the real liquid outlet forms the side of the opening piece. The liquid bypasses the opening piece and flows out in a circuitous way. The liquid outlet can be closed or fully opened by adjusting the rotation, rise and fall of the opening piece.

[0028] Furthermore, the structure of the bottle cap of the present invention is easy and labor-saving, and perfectly solves the problem of the space for the auxiliary cover to fall and how the opening piece is engaged after sinking. The opening piece is opened by hitting the auxiliary cover to press the opening piece of the main cover. The person's force is to first raise the hand away from the auxiliary cover for a distance and then quickly hit the top of the auxiliary cover. The impact force caused by the acceleration generated within this distance can be many times the static pulling force originally generated by pulling the pull ring with fingers. Even an ordinary child can generate this impact force enough to open the opening piece. The result obtained by the present invention after many tests is that this opening method is very easy and labor-saving;

[0029] Moreover, the bottle cap of the present invention is more convenient to adjust the outflow state of the liquid. Since the liquid outlet of the bottle cap of the present invention is formed on the peripheral side of the opening piece, the liquid does not flow out directly but flows out in a circuitous way around the opening piece. The opening piece stops at the middle position of the liquid outlet and can well block the liquid rushing out when pouring quickly. After many tests, when the bottle cap of the present invention is used to pour the liquid quickly, the liquid rushing out is directly blocked by the opening piece and will not splash out directly. The outflow of the liquid is also much more stable than the bottle cap with the opening hole directly exposed on the market. In addition, the rotation or rising and falling of the opening piece can also adjust the size of the liquid outlet, so the outflow state of the liquid can be adjusted more conveniently.

[0030] Finally, the opening method of the opening piece of the present invention does not involve any contact between the hand and the area through which the liquid flows, thereby completely isolating the risk of the liquid being contaminated by the user's fingers;

[0031] In summary, the technical solution of the present invention is structurally very suitable for mold making and high-speed product production. It has no cost increase compared to the original products, is more hygienic and convenient, and is more suitable for daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] Figure 1 A is a schematic diagram of the auxiliary cover and main cover structure of the existing bottle cap.

[0034] Figure 1 B is a schematic diagram of the structure of the opening piece and the pull ring of the existing bottle cap.

[0035] Figure 1 c is a vertical cross-sectional view of the existing bottle cap.

[0036] Figure 1 d is a schematic structural diagram of the liquid outlet hole of the existing bottle cap.

[0037] Figure 2 A is a schematic diagram of the structure of an existing bottle cap equipped with an anti-theft ring and a sub-cover that can be opened.

[0038] Figure 2 B is a schematic diagram of the structure of another opening piece and pull ring of the existing bottle cap.

[0039] Figure 2 FIG. c is another vertical cross-sectional view of the existing bottle cap.

[0040] Figure 2 d is a schematic diagram of the structure of another liquid outlet hole of an existing bottle cap.

[0041] Figure 3 The present invention is a schematic diagram of the overall structure of a bottle cap with a raised tear ring.

[0042] Figure 4 A is a schematic structural diagram of a bottle cap main cover provided with a protrusion according to the present invention.

[0043] Figure 4 B is a schematic structural diagram of a bottle cap provided with a raised tear ring according to the present invention.

[0044] Figure 4 C is a structural schematic diagram of a bottle cap provided with a rosette in the present invention.

[0045] Figure 4 D is a schematic diagram of the position structure between the auxiliary cover and the raised tear ring in a bottle cap of the present invention.

[0046] Figure 5 The present invention is a vertical cross-sectional view of a bottle cap with a raised tear ring.

[0047] Figure 6 It is a schematic diagram of the anatomical structure of a bottle cap of the present invention, in which a secondary cover with a padded tear ring punches an opening piece of a main cover and sinks together, and a liquid outlet is formed after the opening piece is engaged.

[0048] Figure 7 It is a schematic diagram of the three-dimensional structure of a bottle cap of the present invention, in which a secondary cover with a padded tear ring punches an opening piece of a main cover and sinks together, and the opening piece is locked to form a liquid outlet.

[0049] Figure 8 The invention is a cross-sectional view of a bottle cap with a raised tear ring, in which the opening piece of the main cap rises to reduce the size of the liquid outlet.

[0050] Fig. 9 The present invention is a three-dimensional structural schematic diagram of a staggered installation type bottle cap after the auxiliary cover and the main cover are matched.

[0051] Fig.10 A is a three-dimensional structural schematic diagram of a staggered bottle cap installation type with a main cap positioning mark after the auxiliary cap and the main cap are separated from each other.

[0052] Fig.10 B is a schematic diagram of a three-dimensional structure of a staggered bottle cap with an anti-theft ring and a strip-shaped protrusion after the auxiliary cover and the main cover are separated.

[0053] Fig.10 C is a schematic diagram of the three-dimensional structure of a bottle cap with staggered installation type and a petal-shaped body after the secondary cover and the main cover are separated.

[0054] Fig.10 D is a three-dimensional structural schematic diagram of a staggered bottle cap installation type with a secondary cover positioning mark after the secondary cover and the main cover are separated from each other according to the present invention.

[0055] Fig.11 The present invention is a cross-sectional view of a staggered installation type bottle cap auxiliary cover and a main cover after they are matched.

[0056] Fig.12 It is a cross-sectional view of the staggered installation type bottle cap auxiliary cover and the main cover of the present invention, after forming a relative sunken space and before stamping.

[0057] Fig.13 The invention discloses a bottle cap in which an opening piece is punched out of a staggered mounting auxiliary cover and a main cover and sinks simultaneously, and a cross-sectional view of a liquid outlet is formed after the opening piece is engaged.

[0058] Fig.14 It is a cross-sectional view of a bottle cap staggered installation type auxiliary cap according to the present invention, in which the opening piece of the main cap rotates to reduce the liquid outlet.

[0059] Fig.15 It is a three-dimensional structural schematic diagram of a staggered bottle cap installation type of the present invention, in which the main cap opening piece cooperates with the auxiliary cap to rotate and shrink the liquid outlet.

[0060] Fig.16 The present invention is a three-dimensional structural schematic diagram of a bottle cap, another auxiliary cap with a raised tear ring and a main cap after being installed.

[0061] Fig.17 A is a schematic diagram of the three-dimensional structure of a bottle cap of the present invention, wherein the auxiliary cover with a raised tear ring is separated from the main cover.

[0062] Fig.17 B is a schematic diagram of the three-dimensional structure of another bottle cap with a raised easy-tear ring and a ring impact end of the bottle cap of the present invention.

[0063] Fig.17 FIG. c is a schematic diagram of the three-dimensional structure of another annular body with a raised tear ring of a bottle cap according to the present invention.

[0064] Fig.17 D is a schematic diagram of the three-dimensional structure of another type of bottle cap with a raised easy-tear ring according to the present invention.

[0065] Fig.18 The present invention is a cross-sectional view of a bottle cap, another auxiliary cap with a raised tear ring and a main cap after installation.

[0066] Fig.19 It is a cross-sectional view of a bottle cap of the present invention, after another auxiliary cap with a padded tear ring punches the opening piece of the main cap and sinks together to form a liquid outlet.

[0067] Fig. 20 It is a cross-sectional view of a bottle cap of the present invention, in which the opening piece of the main cap cooperates with another auxiliary cap with a padded easy-tear ring and rotates to shrink the liquid outlet.

[0068] Fig.21 It is a schematic diagram of the three-dimensional structure of another staggered installation type auxiliary cover and the main cover of a bottle cap of the present invention after they are matched.

[0069] Fig. 22 It is a schematic diagram of the three-dimensional structure of another staggered installation type auxiliary cover and the main cover of a bottle cap of the present invention after being separated.

[0070] Fig.23 It is a cross-sectional view of another staggered installation type auxiliary cover and main cover of a bottle cap of the present invention after they are matched.

[0071] Fig.24 It is a cross-sectional view of another staggered installation type auxiliary cover of a bottle cap of the present invention and the main cover after forming a relative sinking space and before stamping.

[0072] Fig.25 This is a cross-sectional view of a bottle cap of the present invention, in which another staggered installation type auxiliary cover and a main cover are punched with opening pieces and sink simultaneously, and the opening pieces are engaged to form a liquid outlet.

[0073] Fig.26 This is a cross-sectional view of the liquid outlet being reduced when the opening piece of the main cover that cooperates with the staggered installation auxiliary cover of the present invention rotates and rises.

[0074] Fig. 27 It is a three-dimensional structural schematic diagram of the present invention in which the opening piece of the main cover that cooperates with the staggered installation auxiliary cover rotates and rises to reduce the liquid outlet.

[0075] Fig.28 The present invention is a three-dimensional structural schematic diagram of a bottle cap after the flip-up auxiliary cover and the main cover are matched.

[0076] Fig.29 A is a schematic diagram of a three-dimensional structure of a bottle cap with a positioning groove after the flip-up auxiliary cover and the main cover are separated.

[0077] Fig.29 B is a schematic diagram of a three-dimensional structure of a bottle cap with a positioning protrusion after the flip-up auxiliary cover and the main cover are separated.

[0078] Fig.29 C is a schematic diagram of the three-dimensional structure of a bottle cap with a first strip after the flip-up auxiliary cover and the main cover are separated.

[0079] Fig.29 D is a schematic diagram of the three-dimensional structure of a bottle cap with an anti-theft ring after the flip-up auxiliary cover and the main cover are separated.

[0080] Fig.30 The present invention is a cross-sectional view of a bottle cap after the flip-up auxiliary cover and the main cover are matched.

[0081] Fig.31 The present invention is a cross-sectional view of a bottle cap after the flip-open auxiliary cover is flipped open and rotated relative to the main cover.

[0082] Fig.32 It is a cross-sectional view of a bottle cap flip-up type auxiliary cover of the present invention after it is flipped up and rotated to form a relatively sunken space with the main cover and before stamping.

[0083] Fig.33 The invention discloses a cross-sectional view of a bottle cap flip-up type auxiliary cover that punches an opening piece of a main cover and sinks together with the opening piece to form a liquid outlet.

[0084] Fig.34 The invention discloses a cross-sectional view of a bottle cap flip-opening auxiliary cover, in which an opening piece of a main cover is punched out and the auxiliary cover is flipped down together with the opening piece to form a liquid outlet, and then the auxiliary cover is flipped again.

[0085] Fig.35 The present invention is a schematic diagram of the three-dimensional structure of a bottle cap in which the impact end is at the upper end of the secondary cover and the main cover are matched.

[0086] Fig.36 A is a schematic diagram of the three-dimensional structure of the impacted end of a bottle cap after the secondary cover and the main cover are separated, with the impact end of the bottle cap being at the upper end of the secondary cover.

[0087] Fig.36B is a schematic diagram of the three-dimensional structure of the impact end of a bottle cap after the secondary cover and the main cover are separated, wherein the impact end is at the upper end of the secondary cover.

[0088] Fig.36 C is a schematic diagram of the three-dimensional structure of the first strip body and the raised portion of the bottle cap impact end after the auxiliary cover and the main cover are separated at the upper end of the auxiliary cover.

[0089] Fig.36 d is a schematic diagram of the three-dimensional structure of a sub-cover in which the impact end of the bottle cap is at the upper end of the sub-cover according to the present invention.

[0090] Fig.37 The present invention is a schematic diagram of the anatomical structure of a bottle cap in which the impact end is at the upper end of the secondary cover and the main cover are matched.

[0091] Fig.38 The present invention is a cross-sectional view of the impact end of a bottle cap after the secondary cover is turned over at the upper end of the secondary cover and the cooperation with all the opening pieces of the main cover before stamping, and after the stamping is completed, the secondary cover and all the opening pieces sink simultaneously to form a liquid outlet.

[0092] Fig.39 The present invention is a cross-sectional view of the bottle cap impact end of the present invention cooperating with the auxiliary cover at the upper end of the auxiliary cover after the auxiliary cover is turned over and before the single opening piece of the main cover is punched, and the auxiliary cover and the single opening piece sink simultaneously to form a liquid outlet after the punching is completed.

[0093] Fig.40 The present invention is a cross-sectional view of a bottle cap with a secondary cover strip having a raised tear ring and a main cover strip after being matched.

[0094] Fig.41 The present invention is a cross-sectional view of a bottle cap with a second auxiliary cap in a matched state.

[0095] Fig.42 The present invention is a cross-sectional view of a bottle cap with a second sub-cap after being punched to form a liquid outlet. DETAILED DESCRIPTION

[0096] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0097] In order to fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0098] Combination Figure 3-Figure 39 , Figure 3 This is a schematic diagram of the overall structure of a bottle cap with a raised tear ring according to the present invention; Figure 4 a is a schematic structural diagram of a bottle cap main cover provided with a protrusion in the present invention; Figure 4 b is a schematic structural diagram of a bottle cap provided with a raised tear ring according to the present invention; Figure 4 c is a schematic structural diagram of a bottle cap provided with a petal-shaped body according to the present invention; Figure 4 d is a schematic diagram of the position structure between the auxiliary cover and the raised tear ring in a bottle cap of the present invention; Figure 5 A vertical cross-sectional view of a bottle cap with a raised tear ring according to the present invention; Figure 6 It is a schematic diagram of the anatomical structure of a bottle cap of the present invention, in which a secondary cover with a padded tear ring punches an opening piece of the main cover and sinks together, and a liquid outlet is formed after the opening piece is engaged; Figure 7 It is a schematic diagram of the three-dimensional structure of a bottle cap with a padded tear ring according to the present invention, wherein the auxiliary cover of the bottle cap punches the opening piece of the main cover and sinks together, and the opening piece is engaged to form a liquid outlet; Figure 8 It is a cross-sectional view of a bottle cap of the present invention with a raised tear ring, in which the opening piece of the main cap rises to reduce the size of the liquid outlet; Fig. 9 It is a schematic diagram of the three-dimensional structure of a staggered mounting type bottle cap after the auxiliary cover and the main cover are matched; Fig.10 a is a schematic diagram of a three-dimensional structure of a staggered bottle cap installation type with a main cap positioning mark after the auxiliary cap and the main cap are separated; Fig.10 b is a schematic diagram of a three-dimensional structure of a staggered bottle cap with an anti-theft ring and a strip-shaped protrusion after the secondary cover and the main cover are separated; Fig.10 c is a schematic diagram of a three-dimensional structure of a bottle cap with an annular body after the staggered installation auxiliary cover and the main cover are separated; Fig.10 D is a three-dimensional structural schematic diagram of a staggered bottle cap installation type with a secondary cover positioning mark after the secondary cover and the main cover are separated according to the present invention; Fig.11 This is a cross-sectional view of a staggered mounting type bottle cap after the auxiliary cap and the main cap are matched; Fig.12 It is a cross-sectional view of the staggered installation type bottle cap of the present invention, wherein the auxiliary cover and the main cover are matched after forming a relative sinking space and before being stamped; Fig.13 A cross-sectional view of a staggered mounted bottle cap of the present invention, in which an opening piece is punched out of a secondary cap and a main cap and sinks simultaneously, and a liquid outlet is formed after the opening piece is engaged; Fig.14 It is a cross-sectional view of a bottle cap staggered installation type auxiliary cap of the present invention, in which the opening piece of the main cap cooperates with the auxiliary cap to rotate and reduce the liquid outlet; Fig.15 It is a three-dimensional structural schematic diagram of a staggered installation type bottle cap of the present invention, in which the main cap opening piece cooperates with the auxiliary cap to rotate and reduce the liquid outlet; Fig.16 It is a schematic diagram of the three-dimensional structure of a bottle cap of the present invention, another auxiliary cap with a raised tear ring and a main cap after being installed; Fig.17 A is a schematic diagram of the three-dimensional structure of another bottle cap of the present invention, wherein the secondary cap with a raised tear ring is separated from the main cap; Fig.17 b is a schematic diagram of the three-dimensional structure of another bottle cap with a raised easy-tear ring and a ring impact end of the bottle cap of the present invention; Fig.17c is a schematic diagram of the three-dimensional structure of another annular body with a raised tear ring of a bottle cap of the present invention; Fig.17 d is a schematic diagram of a three-dimensional structure of another type of bottle cap with a raised easy-tear ring according to the present invention; Fig.18 It is a cross-sectional view of a bottle cap of the present invention, another auxiliary cap with a raised tear ring and a main cap after being installed; Fig.19 It is a cross-sectional view of a bottle cap of the present invention, in which another auxiliary cap with a padded tear ring punches the main cap opening piece and sinks together to form a liquid outlet; Fig. 20 It is a cross-sectional view of a bottle cap of the present invention, in which another auxiliary cap with a raised tear ring cooperates with the main cap opening piece to rotate and reduce the liquid outlet; Fig.21 It is a schematic diagram of the three-dimensional structure of another staggered installation type of bottle cap of the present invention after the auxiliary cover and the main cover are matched; Fig. 22 It is a schematic diagram of the three-dimensional structure of another staggered installation type of a bottle cap of the present invention after the secondary cover and the main cover are separated; Fig.23 It is a cross-sectional view of another staggered installation type auxiliary cover and main cover of a bottle cap of the present invention after they are matched; Fig.24 It is a cross-sectional view of another staggered installation type of a bottle cap of the present invention, wherein the auxiliary cap and the main cap form a relative sinking space and are matched before stamping; Fig.25 A cross-sectional view of another staggered installation type of bottle cap of the present invention, wherein the auxiliary cap and the main cap are punched with opening pieces and sink at the same time, and the opening pieces are engaged to form a liquid outlet; Fig.26 It is a cross-sectional view of the main cover opening piece that cooperates with the staggered installation auxiliary cover of the present invention rotates and rises to reduce the liquid outlet; Fig. 27 It is a three-dimensional structural schematic diagram of the present invention in which the opening piece of the main cover that cooperates with the staggered installation type auxiliary cover rotates and rises to reduce the liquid outlet; Fig.28 It is a schematic diagram of the three-dimensional structure of a bottle cap after the lifting type auxiliary cover and the main cover are matched; Fig.29 a is a schematic diagram of a three-dimensional structure of a bottle cap with a positioning groove after the secondary cover and the main cover are separated; Fig.29 b is a schematic diagram of a three-dimensional structure of a bottle cap with a positioning protrusion after the secondary cover and the main cover are separated; Fig.29 c is a schematic diagram of a three-dimensional structure of a bottle cap with a first strip after the secondary cover and the main cover are separated; Fig.29 D is a schematic diagram of a three-dimensional structure of a bottle cap with an anti-theft ring after the secondary cover and the main cover are separated; Fig.30 This is a cross-sectional view of a bottle cap after the flip-up auxiliary cover and the main cover are matched; Fig.31 It is a cross-sectional view of a bottle cap flip-up type auxiliary cover after it is flipped up and rotated relative to the main cover of the present invention; Fig.32 It is a cross-sectional view of a bottle cap flip-up type auxiliary cover of the present invention after it is flipped up and rotated to form a relatively sunken space with the main cover and before stamping; Fig.33It is a cross-sectional view of a bottle cap flip-up type auxiliary cover of the present invention, in which the auxiliary cover punches the main cover opening piece and sinks together with the opening piece to form a liquid outlet; Fig.34 It is a cross-sectional view of a bottle cap flip-up type secondary cover of the present invention, after the secondary cover is punched out of the main cover opening piece and sinks together with the opening piece to form a liquid outlet, and then the secondary cover is flipped up again; Fig.35 It is a schematic diagram of the three-dimensional structure of a bottle cap of the present invention, in which the impact end of the bottle cap is at the upper end of the bottle cap, after the auxiliary cover and the main cover are matched; Fig.36 a is a schematic diagram of the three-dimensional structure of the impacted end of a bottle cap after the secondary cover and the main cover are separated, with the impact end of the bottle cap being at the upper end of the secondary cover; Fig.36 b is a schematic diagram of the three-dimensional structure of the impact end of a bottle cap after the secondary cover and the main cover are separated, with the impact end of the bottle cap being at the upper end of the secondary cover; Fig.36 c is a schematic diagram of the three-dimensional structure of the first strip-shaped body and the raised portion after the secondary cover and the main cover are separated at the impact end of the bottle cap of the present invention; Fig.36 d is a schematic diagram of the three-dimensional structure of a sub-cap with an impact end of the bottle cap at the upper end of the sub-cap according to the present invention; Fig.37 It is a schematic diagram of the anatomical structure of a bottle cap of the present invention, in which the impact end of the bottle cap is at the upper end of the bottle cap, after the auxiliary cover and the main cover are matched; Fig.38 A cross-sectional view of the impact end of a bottle cap of the present invention after the secondary cover at the upper end of the secondary cover is turned over and matched with all the opening pieces of the main cover before stamping, and after the stamping is completed, the secondary cover and all the opening pieces sink simultaneously to form a liquid outlet; Fig.39 A cross-sectional view of the bottle cap impact end of the present invention, after the secondary cover is turned over at the upper end of the secondary cover and before the single opening piece of the main cover is punched, and after the punching is completed, the secondary cover and the single opening piece simultaneously sink to form a liquid outlet; Fig.40 It is a cross-sectional view of a bottle cap of the present invention after the auxiliary cover with a raised tear ring and the main cover with a strip body are matched; Fig.41 A cross-sectional view of a bottle cap of the present invention with a second auxiliary cap in good coordination; Fig.42 The present invention is a cross-sectional view of a bottle cap with a second sub-cap after being punched to form a liquid outlet.

[0099] The present embodiment discloses a bottle cap, which can directly strike the sub-cap without contacting the liquid flow area of ​​the main cap, so that the impact end 4 on the sub-cap impacts the impacted end 31 on the opening piece of the main cap, and the opening piece 3 sinks and is engaged with the main cap. The engaged opening piece 3 stops at the middle position of the outlet hole 19, just covering the outlet hole 19 from the front, so that the real liquid outlet forms the side of the opening piece 3. When pouring, the liquid bypasses the opening piece 3 and flows out of the outlet hole 19 in a circuitous manner. The flow rate of the liquid outlet can be adjusted by adjusting the rotation, rise and fall of the opening piece 3 to close or fully open the liquid outlet.

[0100] The bottle cap of this embodiment includes a main cover 1 and a sub-cover 2, and there are one or more sub-covers 2. The main cover 1 and the sub-covers 2 are detachably connected or integrally connected, that is, they can be separated or connected together. The main cover 1 is provided with an opening piece 3, and the opening piece 3 and the main cover 1 are integrally formed. The sub-cover 2 is provided with an impact end 4, and the opening piece 3 is provided with an impacted end 31. The upper end or the lower end of the opening piece 3 is provided with a petal-shaped body or a strip-shaped body.

[0101] The lower end of the opening piece 3 of this embodiment is provided with a first petal-shaped body 5 surrounding the outer periphery of the opening piece 3. The upper end of the first petal-shaped body 5 is connected to the outer periphery of the opening piece 3, and the lower end is retracted inwardly around the center direction of the opening piece 3. The first petal-shaped body 5 is arranged at intervals of not less than a single first petal-shaped body 5. The inner diameter of the first petal-shaped body 5 after retraction is less than or equal to the outer diameter of the opening piece 3. The length of the first petal-shaped body 5 is greater than or equal to the sinking height of the opening piece 3. This embodiment is Figure 6 and Fig.13 H3 in.

[0102] Preferably, the inner surface of the first petal 5 is provided with protrusions 51 arranged up and down, the inner diameter of the protrusion 51 located at the lower end of the first petal 5 is smaller than the outer diameter of the opening piece 3, and the protrusions 51 are arranged in the same height in the axial direction or arranged in a spiral arrangement in the axial direction (refer to Figure 5 ).

[0103] Preferably, the lower ends of all the first petal-shaped bodies 5 are connected together by an annular body 53, and the inner diameter of the annular body 53 is smaller than the outer diameter of the opening piece 3 (refer to Fig.10 ).

[0104] Preferably, the lower end of the opening piece 3 is provided with a first strip-shaped body 54 surrounding the outer periphery of the opening piece 3, and the first strip-shaped bodies 54 are arranged at intervals of not less than a single strip-shaped body (combined with Fig.30 , Fig.40 , Fig.41 ), the length of the first strip 54 is greater than or equal to the sinking depth of the opening piece 3, and in this embodiment Fig.34 H8 in; the inner surface of the first strip body 54 is provided with raised portions 55 arranged vertically, the inner diameter of the raised portion 55 at the lower end of the first strip body 54 is smaller than the outer diameter of the opening piece 3, the raised portions 55 are arranged axially at equal heights or arranged axially in spirals, see Fig.30 , Fig.40 , Fig.41 .

[0105] Preferably, the upper end of the opening piece 3 is provided with a second petal-shaped body or a second strip-shaped body surrounding the outer periphery of the opening piece 3, the second petal-shaped body or the second strip-shaped body is arranged at intervals not less than a single petal-shaped body or a single strip-shaped body, the lower end of the second petal-shaped body or the second strip-shaped body is connected to the outer periphery of the opening piece 3 and expands outward around the outer periphery of the opening piece 3 in the axial direction, the outer diameter after expansion is greater than or equal to the outer diameter of the opening piece 3, and the length of the second petal-shaped body or the second strip-shaped body is greater than or equal to the sinking depth of the opening piece 3; the outer surface of the second petal-shaped body or the second strip-shaped body is provided with convex portions 62 arranged up and down, the outer diameter of the convex portion 62 located at the uppermost end of the second petal-shaped body or the second strip-shaped body is greater than the outer diameter of the opening piece 3, and the convex portions 62 on the second petal-shaped body or the second strip-shaped body are distributed at equal heights in the axial direction or are arranged in an up and down spiral arrangement in the axial direction; this embodiment takes the second petal-shaped body as an example, see Fig.23 .

[0106] A groove is provided at the upper top of the second petal-shaped body, and the bottom of the groove is the impacted end 31. Fig. 22 , Fig.10 A and Fig. 27 .

[0107] The impact end 4 is an annular surface or a whole surface; the lower end surface inside the auxiliary cover 2 is the impact end 4. Fig.18 The impact end 4 is a tooth-like protrusion on the lower end surface of the auxiliary cover 2, see Figure 4 b; at least one block-shaped protrusion 32 is provided on the opening piece 3, see Figure 4 a, the inner annular body surface of the auxiliary cover 2 is vertically arranged with no less than one strip protrusion 41, the bottom end of the strip protrusion 41 is the impact end 4, the inner diameter between the strip protrusions 41 is smaller than the outer diameter of the opening piece 3, combined with Fig.10 b.

[0108] Combination Fig. 9 , Fig.10 , Fig.21 , Fig. 22 , Fig.28 and Fig.29 In this embodiment, the auxiliary cover 2 has an annular protrusion 42 arranged in an annular interval, and the annular protrusion is arranged in an annular interval. The top of the annular protrusion is the impact end 4. Fig. 22 The sub-cover 2 is provided with a protrusion on the top, the top of the protrusion is the impact end 4, the outer side of the sub-cover 2 is provided with a cushioned tear ring 8, the main cover 1 and the sub-cover 2 are provided with positioning marks, see Fig.1011 and 21 on the main cover 1 and the auxiliary cover 2 are respectively provided with a snap-fitting protrusion and a snap-fitting groove; before the auxiliary cover 2 is punched for the opening piece 3, a space of a descending height is reserved or formed between the auxiliary cover 2 and the main cover 1, and the descending height is greater than or equal to the sinking depth of the opening piece 3. Figure 5 and Fig.18 H in the sub-cover 2 is provided with an easy-to-tear pad tear ring 8 on the outer portion thereof, the height of the pad tear ring 8 depends on the sinking depth of the opening piece 3;

[0109] Specifically, combined Figure 3-Figure 8 This embodiment uses a secondary cover with a tear-off ring for padding and a main cover with a simple opening piece ( Figure 3-8 ), when in use, first pull open the tear ring 8 on the auxiliary cover to make room for the auxiliary cover 2 to descend ( Figure 5 H1 in the figure), hit the top of the auxiliary cover 2 with your hand or a tool or rotate the auxiliary cover 2 through the threaded thrust force that cooperates with the main cover 1 until the impact end 4 set on the auxiliary cover presses the impacted end 31 on the main cover opening piece 3 and causes the opening piece 3 and the auxiliary cover to sink together ( Figure 6 ), the maximum sinking depth H3 can be determined by the height of the tear-away pad ring 8 ( Figure 5 H1 in the figure) or the reserved height space inside the auxiliary cover 2 and the main cover 1 ( Figure 5 The opening piece 3 after sinking is received and engaged by the spacing protrusion 51 on the surface of the first petal-shaped body 5 arranged below the opening piece 3 ( Figure 6 , Figure 7 ) will not fall into the liquid, at this time, an outlet hole 19 is formed between the opening piece 3 and the first rosette 5 ( Figure 7 ), if the spaced protrusions 51 on the surface of the first petal 5 are arranged in a spiral manner in the axial direction, the opening piece 3 can be lowered or raised by rotating the block protrusion 32 on the opening piece 3 ( Figure 6 H3 in becomes Figure 8 H3 in the figure changes the size of the outlet hole 19 and thus changes the flow rate of the liquid outflow.

[0110] Specifically, this embodiment uses a bottle cap with a tear ring ( Figure 16-20 ), when in use, first pull open the easy-tear ring 8 on the auxiliary cover to make room for the auxiliary cover 2 to drop down ( Fig.18 H1 in the figure), hit the top of the auxiliary cover 2 with your hand or a tool until the impact end 4 set on the auxiliary cover presses the top of the second petal-shaped body 6 surrounding the main cover opening piece 3 by the impact end 31, so that the opening piece 3 and the auxiliary cover sink together ( Fig.19 ), the sinking depth H6 can be raised by using an easy-tear ring 8 ( Fig.18 H1 in the figure) or the reserved height space inside the auxiliary cover 2 and the main cover 1 ( Fig.18 The sinking opening piece 3 is received by the annular body 53 at the lower end of the first petal-shaped body 5 arranged below the opening piece 3 and is engaged with the opening opening to prevent the opening piece 3 from falling into the liquid ( Fig.19 , Fig. 20 ), at this time, a liquid outlet is formed between the second petal-shaped body 6 protruding on the side of the opening piece and the first petal-shaped body 5 of the main cover, and by clamping the second petal-shaped body 6 and rotating the opening piece 3, the outlet hole 19 will be turned on and off ( Figure 19-20 ) to adjust the liquid flow rate.

[0111] In addition, the staggered mounting bottle caps ( Figure 9-Figure 15 ), when the main cover 1 and the auxiliary cover 2 are installed, the auxiliary cover impact end 4 and the second petal-shaped body 6 on the opening piece of the main cover are installed at a certain angle without interfering with each other ( Fig.11 ), when in use, the anti-theft ring 81 on the sub-cover 2 can be torn off and the sub-cover 2 can be pried apart until it is separated from the main cover 1, and then the sub-cover can be rotated to a certain angle so that the sub-cover positioning mark 21 on the sub-cover and the main cover positioning mark 11 on the main cover are matched and then installed back to the main cover 1 ( Fig.12 ), at this time, the impact end 4 on the auxiliary cover will directly abut against the impacted end 31 of the main cover ( Fig.12 ), and the auxiliary cover forms a descending height space relative to the main cover ( Fig.12 Then, the top of the auxiliary cover 2 is directly hit by hand or tool so that the impact end 4 of the auxiliary cover presses the impacted end 31 on the main cover opening piece and sinks at the same time ( Fig.13 ), after sinking to a certain height ( Fig.13 The opening piece H3) will be caught by the annular body 53 at the lower end of the first petal 5 disposed below the opening piece 3 and will be clamped between the opening and the annular body 53 and will not fall into the liquid ( Fig.13 , Fig.14 ), at this time, a liquid outlet is formed between the second petal-shaped body 6 protruding around the opening piece 3 and the first petal-shaped body 5 of the main cover, and by clamping the second petal-shaped body 6 and rotating the opening piece 3, the outlet hole 19 will be turned on and off ( Figure 13-15 ) to adjust the liquid flow rate.

[0112] Furthermore, the staggered installation type bottle cap ( Figure 21-Figure 27 ), when the main cover 1 and the auxiliary cover 2 are installed, the auxiliary cover impact end 4 and the second petal-shaped body 6 on the opening piece of the main cover are installed at a certain angle without interfering with each other ( Fig.23 ), when in use, the sub-cover 2 can be opened until it is separated from the main cover 1, and then the sub-cover can be rotated to a certain angle so that the sub-cover positioning mark 21 on the sub-cover is matched with the main cover positioning mark 11 and then installed back to the main cover 1 ( Fig.24 ), at this time, the impact end 4 on the auxiliary cover will directly abut against the impacted end 31 of the main cover ( Fig.24 ), and the auxiliary cover forms a descending height space relative to the main cover (H9, H10 in Figure (24), and then directly hit the top of the auxiliary cover 2 with your hand or a tool so that the impact end 4 of the auxiliary cover presses the impacted end 31 on the main cover opening piece and sinks at the same time ( Fig.25 ), after sinking to a certain height ( Fig.25 H11 in the figure), the opening piece 3 will be engaged with the edge of the opening by the outer protrusion 62 of the second petal-shaped body 6 arranged above the opening piece and will not fall into the liquid ( Fig.25 ), at this time, an outlet hole 19 is formed between the second petal-shaped body 6 and the main cover on the peripheral side of the opening piece. If the protrusion 62 is spirally distributed in the axial direction, the impact end 4 on the auxiliary cover 2 is clamped at the interval position of the second petal-shaped body 6 by covering the auxiliary cover 2, and the opening piece 3 is rotated to make the opening piece rise or fall ( Fig.26 , Fig. 27 ) will make the outlet hole 19 form an on and off state ( Fig.26 , Fig. 27 ) to adjust the liquid flow rate.

[0113] Finally, in this embodiment, the flip-up auxiliary cover, the auxiliary cover 2 and the main cover 1 are always connected ( Figure 28-34 ), in the normal installation state, the impact end 4 of the auxiliary cover and the opening piece 3 of the main cover are staggered ( Fig.30 ), when using, first tear off the anti-theft ring 81 on the auxiliary cover or directly open the auxiliary cover 2 ( Fig.31 ), at this time, the auxiliary cover 2 and the main cover 1 are still connected, but the auxiliary cover 2 can rotate relative to the main cover 1, and the auxiliary cover 2 is rotated until the positioning protrusion 22 on the auxiliary cover is engaged with the positioning groove 12 on the main cover, and then the opened auxiliary cover is pulled back until the impact end 4 on the auxiliary cover 2 is against the impacted end 31 of the main cover ( Fig.32 ), at this time, the auxiliary cover forms a descending height space relative to the main cover ( Fig.32 H7 in the figure), use your hands or tools to knock on the top of the auxiliary cover until the main cover opening piece 3 sinks, and the sinking opening piece 3 is engaged by the raised portion 55 on the first strip body 54 arranged on the lower side of the opening piece ( Fig.33 ), an outlet hole 19 is formed between the opening piece 3 and the first strip body 54 on the peripheral side ( Fig.34 ).

[0114] In addition, the impact end of the present embodiment is at the bottle cap ( Figure 35-Figure 39 ), when in use, the sub-cover 2 can be unscrewed or pried apart until it is separated from the main cover 1, and then the sub-cover 2 can be turned over and pressed against the opening piece 3 of the main cover, and the sub-cover 2 can be knocked by hand or with a tool until the sub-cover and the opening piece 3 of the main cover sink together ( Fig.38 ), the opening piece 3 on the main cover can be one piece or multiple pieces, and the impact end 4 on the auxiliary cover can be one piece or multiple pieces. When in use, multiple opening pieces can be punched at the same time according to the required flow rate ( Fig.38 ), or you can punch a certain opening piece separately ( Fig.39 ), the punched and sunken opening piece 3 is engaged by the raised portion on the first strip body 54 arranged on the lower side of the opening piece ( Figure 38-39 ), an outlet hole 19 is formed between the opening piece 3 and the first strip body 54 on the peripheral side ( Fig.38 , Fig.39 ).

[0115] Finally, this embodiment can also be provided with a bottle cap with a second sub-cover, with the impact end at the top of the second sub-cover ( Figure 41-42 ), when in use, unscrew or pull open the second sub-cover 222 until it is separated from the main cover 1, then turn the second sub-cover 222 over and press against the top of the sub-cover 2, knock the second sub-cover to make the second sub-cover 222, the sub-cover 2 and the opening piece 3 sink together, the sub-cover 2 after sinking is engaged with the main cover 1, and the opening piece 3 is engaged with the protrusion 55 on the first strip body 54 arranged on the lower side of the opening piece ( Fig.42 ), an outlet hole 19 is formed between the opening piece 3 and the first strip body 54 on the peripheral side ( Fig.42 ).

[0116] When the liquid flows out of the bottle cap described above, it will bypass the opening piece 3 and flow out from the outlet hole 19 in a circuitous manner.

[0117] The bottle cap provided by the present invention can directly knock or rotate the secondary cover to make the impact end of the secondary cover impact the impacted end of the opening piece of the main cover without contacting the liquid flow passing area of ​​the main cover, so that the opening piece sinks and is engaged with the main cover. The engaged opening piece stops at the middle position of the opening hole and just covers the opening hole from the front, so that the real liquid outlet is formed on the side of the opening piece. The liquid bypasses the opening piece and flows out in a circuitous way. The liquid outlet can be closed or fully opened by adjusting the rotation, rise and fall of the opening piece.

[0118] Furthermore, the structure of the bottle cap of the present invention is easy and labor-saving, and perfectly solves the problem of the space for the auxiliary cover to fall and how the opening piece is engaged after sinking. The opening piece is opened by hitting the auxiliary cover to press the opening piece of the main cover. The person's force is to first raise the hand away from the auxiliary cover for a distance and then quickly hit the top of the auxiliary cover. The impact force caused by the acceleration generated within this distance can be many times the static pulling force originally generated by pulling the pull ring with fingers. Even an ordinary child can generate this impact force enough to open the opening piece. The result obtained by the present invention after many tests is that this opening method is very easy and labor-saving;

[0119] Moreover, the bottle cap of the present invention is more convenient to adjust the outflow state of the liquid. Since the liquid outlet of the bottle cap of the present invention is formed on the peripheral side of the opening piece, the liquid does not flow out directly but flows out in a circuitous way around the opening piece. The opening piece stops at the middle position of the liquid outlet and can well block the liquid rushing out when pouring quickly. After many tests, when the bottle cap of the present invention is used to pour the liquid quickly, the liquid rushing out is directly blocked by the opening piece and will not splash out directly. The outflow of the liquid is also much more stable than the bottle cap with the opening hole directly exposed on the market. In addition, the rotation or rising and falling of the opening piece can also adjust the size of the liquid outlet, so the outflow state of the liquid can be adjusted more conveniently.

[0120] Finally, the opening method of the opening piece of the present invention does not involve any contact between the hand and the area through which the liquid flows, thereby completely eliminating the risk of the liquid being contaminated by the user's fingers;

[0121] In summary, the technical solution of the present invention is structurally very suitable for mold making and high-speed product production. It has no cost increase compared to the original products, is more hygienic and convenient, and is more suitable for daily use.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention with equivalents. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. A bottle cap, characterized in that: The bottle cap comprises a main cap (1) and a sub-cap (2), wherein the sub-cap (2) is one or more, and the main cap (1) and the sub-cap (2) are connected in a detachable or integral manner, the main cap (1) is provided with an opening piece (3) which is integral with the main cap (1), the sub-cap (2) is provided with an impact end (4), and the opening piece (3) is provided with an impacted end (31); The lower end of the opening piece (3) is provided with a petal-shaped body (5) surrounding the outer periphery of the opening piece (3); the upper end of the petal-shaped body (5) is connected to the outer periphery of the opening piece (3), and the lower end is retracted inwardly around the center direction of the opening piece (3); the arrangement interval of the petal-shaped body (5) is not less than that of a single petal-shaped body (5); the inner diameter of the petal-shaped body (5) after retracting is less than or equal to the outer diameter of the opening piece (3); and the length of the petal-shaped body (5) is greater than or equal to the sinking depth of the opening piece (3).

2. The bottle cap according to claim 1, characterized in that: The inner surface of the petal-shaped body (5) is provided with protrusions (51) arranged in an upper and lower manner, the inner diameter of the protrusion (51) located at the lowermost end of the petal-shaped body (5) is smaller than the outer diameter of the opening piece (3), and the protrusions (51) are arranged in an axially equal height arrangement or in an axially upper and lower spiral arrangement.

3. The bottle cap according to claim 1, characterized in that: The lower ends of all the petal-shaped bodies (5) are connected together via an annular body (53), and the inner diameter of the annular body (53) is smaller than the outer diameter of the opening piece (3).

4. The bottle cap according to claim 1, characterized in that: The impact end (4) is an annular surface or a whole surface.

5. The bottle cap according to claim 1, characterized in that: The impact end (4) is a tooth-shaped protrusion on the lower end surface of the auxiliary cover (2).

6. The bottle cap according to claim 1, characterized in that: No less than one strip-shaped protrusion (41) is vertically arranged on the surface of the annular body inside the auxiliary cover (2), the bottom end of the strip-shaped protrusion (41) is the impact end (4), and the inner diameter between the strip-shaped protrusions (41) is smaller than the outer diameter of the opening piece (3).

7. The bottle cap according to claim 1, characterized in that: The auxiliary cover (2) is provided with annular protrusions (42) arranged in an annular manner and spaced apart from each other, and the top of the annular protrusion is an impact end (4).

8. The bottle cap according to claim 1, characterized in that: A protrusion is arranged on the top of the auxiliary cover (2), and the top end of the protrusion is an impact end (4).

9. The bottle cap according to claim 1, characterized in that: A raised tear ring (8) is provided on the outer side of the auxiliary cover (2), and the height of the raised tear ring (8) depends on the sinking depth of the opening piece (3).

10. The bottle cap according to claim 1, characterized in that: Positioning marks are provided on the main cover (1) and the auxiliary cover (2), and the positioning marks on the main cover (1) and the auxiliary cover (2) correspond to each other.

11. The bottle cap according to claim 1, characterized in that: Before the auxiliary cover (2) punches the opening piece (3), a descending space is left between the auxiliary cover (2) and the main cover (1), and the descending depth is greater than or equal to the sinking depth of the opening piece (3).

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