Safe edge easy-to-open cover with bidirectional protection

Abstract

The invention provides a safety edge easy-to-open cover with bidirectional protection, and belongs to the technical field of easy-to-open covers. The cover comprises a cover body and a pull ring arranged on the cover body. The cover body is provided with a folding safety edge, the folding safety edge is a W-shaped folding shape formed after the cover surface is folded and formed, an inner safety edge and an outer safety edge are formed, after the cover surface is opened, the inner safety edge is used for shielding the edge of a tongue piece, the outer safety edge is used for shielding the edge of a filling opening, and it is guaranteed that a user is not prone to being cut by the sharp edge of the opening. Through the folding safety edge in the W-shaped folding shape, after the cover face is opened, the inner safety edge and the outer safety edge in the W-shaped folding shape respectively shield the edge of the can opening and the edge of the tongue piece, and it is guaranteed that the sharp edge of the opening is not prone to cutting a user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of easy-open cover, in particular to a safety edge easy-open cover with bidirectional protection. BACKGROUND

[0002] The traditional full-opening easy-open cover leaves sharp edges after opening, which is easy to cause customer injury and has hidden dangers. In order to solve the safety problem of the edge of the can opening after opening, especially for metal packaging directly used for drinking or taking contents, it is particularly important to design and develop a full-opening easy-open cover with a protective edge.

[0003] Therefore, through research, an easy-open cover with a single safety edge is developed, which can shield the edge of the pouring opening through the folding safety edge arranged on the cover body, and protect the safety of the edge of the can opening connected with the can body after opening. However, the tongue piece after tearing the cover surface cannot guarantee safety and is easy to injure the user.

[0004] Therefore, an easy-open cover capable of shielding the edge of the can opening and the edge of the tongue piece is urgently needed. SUMMARY

[0005] Therefore, in order to solve the technical problem of the risk of injuring the user caused by the edge of the can opening and the edge of the tongue piece after opening of the traditional full-opening easy-open cover, the present application provides a safety edge easy-open cover with bidirectional protection, which can shield the edge of the can opening and the edge of the tongue piece through the W-shaped folding safety edge after opening of the cover surface, so as to ensure that the sharp edge of the opening is not easy to injure the user.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: A safety edge easy-open cover with bidirectional protection, comprising a cover body and a pull ring arranged on the cover body. A folding safety edge is arranged on the cover body, the folding safety edge is formed in a W-shaped folding shape by folding the cover surface, and an inner safety edge and an outer safety edge are formed. When the cover surface is opened, the inner safety edge is used to shield the edge of the tongue piece, and the outer safety edge is used to shield the edge of the pouring opening, so as to ensure that the sharp edge of the opening is not easy to injure the user.

[0007] Preferably, the opening diameter D2 of the cover surface and the folding outer diameter D1 and the inner folding edge D3 satisfy ∣D1-D2∣≤1mm, and simultaneously satisfy ∣D2-D3∣≤1mm.

[0008] Preferably, a bird flight scale line is further arranged on the cover body, the bird flight scale line is arranged below the pull ring and close to the rivet on the cover body, and is used as the first scale line of the cover surface opening of the cover body. When the pull ring and the rivet are pulled to break the bird flight scale line, the pressure in the can is released, the tongue is prevented from flying and injuring people.

[0009] Preferably, the center arc area of the bird flight scale is 0.1-0.9mm from the rivet edge of the cover.

[0010] Preferably, the cover further comprises the following structures on the cover surface: a ring-shaped main scale line as the main scale line of the cover surface, which ensures the cover surface to be fully opened and meets the requirement of full opening; an expansion ring and a finger platform forming a convex-concave structure for increasing the strength of the cover surface; a ring nail arranged on the cover surface of the cover and directly contacting the pull ring for supporting the pull ring; a cover supporting nail arranged on the cover surface of the cover and located on both sides of the pull ring for supporting the cover surface to be flat and limiting the rotation of the pull ring; a rivet arranged on the cover surface of the cover as the connecting point of the cover surface and the pull ring; a hook edge as the outer diameter part of the cover cooperating with the can body to participate in double seaming and meet the sealing requirement of the can end; a shoulder surface located at the contact area of the cover surface edge and the can opening for cooperating with the can opening to ensure the stability of the cooperation between the cover and the can opening; a tongue arranged on the cover surface and located inside the main scale line, which is directly associated with the main scale line for tearing along the scale trace during opening and finally completely opening the cover surface.

[0011] Preferably, the cover further comprises the following structures: a buried rib arranged on the cover surface as the pressure-resistant structure of the cover surface for improving the pressure-resistant capacity of the cover surface.

[0012] Preferably, the whole ring-shaped main scale line is circular.

[0013] Preferably, the pull ring comprises: a pull ring body; a hawk located at the front end of the pull ring and directly contacting the cover surface of the cover as the key contact point of the pull ring and the cover for piercing, which adopts a non-reduction line design to ensure the cover to be smoothly broken by piercing the cover through the hawk during opening; a raised riveting surface located at the connection area of the pull ring body and the cover; a handle hole connected with the pull ring body for a finger to pass through and exert force to pull up the pull ring body; a roll circle arranged at the edge or the holding part of the pull ring body as the support during pulling for opening the cover surface;

[0014] The application provides a safe edge easy-to-open cover with bidirectional protection, which is characterized in that a W-shaped folding safety edge is arranged on the cover, and the inner safety edge and the outer safety edge of the W-shaped folding safety edge shield the edge of the can opening and the edge of the tongue piece respectively after the cover is opened, so that the sharp edge of the opening cannot hurt the user, and the direct drinking requirement of beverages or beer is met. (1) The safety is improved significantly, and the risk of being cut is prevented: the W-shaped folding safety edge arranged on the cover can shield the sharp edge of the can opening and the edge of the tongue piece after the cover is opened, so that the fingers and the lips of the user cannot directly contact the sharp parts of the edge of the can opening or the edge of the tongue piece when the cover is opened or the beverage is drunk. The incidence of the scratch accident is reduced, and the application is especially suitable for the vulnerable groups such as children and the elderly. The safety requirement of the direct drinking of beverages (such as beer and soda) is met, the user can directly drink the beverage from the can opening without worrying about being cut, and the product trust is improved.

[0015] (2) The use experience is optimized, and the direct drinking is facilitated: the full-opening easy-to-open cover design of the application can make the cover completely open or be removed to form a large-aperture opening, and the folding safety edge can ensure that the drinking process is smooth and unblocked. No additional tools or liquid pouring is needed, time and energy are saved, and the application is especially suitable for the immediate drinking demand in outdoor activities, after exercise or in fast-paced life. The direct drinking experience is more comfortable, the cover does not block the beverage flow, the liquid spilling problem is reduced, and the user satisfaction is improved.

[0016] In summary, the application solves the technical problem that the traditional easy-to-open cover is easy to cut when directly drunk by designing the W-shaped folding safety edge. The core advantages are safety and reliability, convenient use and strong compatibility, which not only improve the user satisfaction but also may reduce the cost loss of the manufacturer caused by the cut complaint. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Structure diagram of the full-opening cover with bidirectional protection safety edge of the application Figure 2 Sectional view of the easy-to-open cover with bidirectional protection safety edge of the application Figure 3 Structure diagram of the local structure of the bidirectional protection safety edge of the application Figure 4 Structure diagram of the bidirectional protection pull ring of the application Figure 5 Bird flying opening diagram of the application Figure 6 Cover opening diagram of the application Figure 7 Local structure diagram of the cover opening Figure 8 Structure diagram of the bird flying scale line In the figure, 1, cover body; 11, annular main scale line; 12, bird flying scale line; 13, expansion ring; 14, finger table; 15, ring nail; 16, cover nail; 17, folding safety edge; 171, inner safety edge; 172, outer safety edge; 18, rivet; 19, hook edge; 110, scapular surface; 111, countersunk rib; 112, tongue; 2, pull ring; 20, pull ring body; 21, eagle beak; 22, undulating riveting surface; 23, handle hole; 24, roll circle. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application; and not all the embodiments; based on the embodiments in the present application; all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that the positions or position relationships indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0021] As Figures 1-7 shown, the present application provides a safety edge easy-open cover with bidirectional protection, comprising a cover body 1 and a pull ring 2 arranged on the cover body 1; The cover body 1 is provided with a folding safety edge 17, the folding safety edge 17 is formed in a W-shaped folding shape by folding the cover surface, forming an inner safety edge 171 and an outer safety edge 172, when the cover surface is opened, the inner safety edge 171 is used to shield the edge of the tongue, and the outer safety edge is used to shield the edge of the opening of the can, so as to ensure that the sharp edge of the opening is not easy to cut the user.

[0022] As Figure 3As shown, the W-shaped folding safety edge 17 mainly has 3 oblique angles α, β, θ and 5 R angles, and the R1-R5 interact to form the safety shielding relationship of the safety edge. The inner and outer safety edges have a certain spatial shielding relationship with the score line. When the cover surface is opened, the shielding and spatial position relationship is used to ensure that the sharp edge of the opening is not easy to cut the user. The tongue piece after tearing also has a safety edge to protect the user from being cut. The opening diameter D2 and the folded outer diameter D1, and the inner folded edge D3 satisfy |D1-D2|≤1mm, and |D2-D3|≤1mm at the same time.

[0023] Among them, the 3 oblique angles and 5 R angles are formed during molding, and can be formed according to the needs of the easy-to-open cover. There is no special requirement for this. In the present application, it is intended to explain that the above-mentioned 3 oblique angles and 5 R angles formed during molding ensure the shielding function of the inner and outer safety edges.

[0024] The cover body 1 is usually made of metal material and has a circular profile. The pull ring 2 is connected to the edge of the cover body 1 by a fixing device such as a rivet 18 or a buckle, which is convenient for the user to pull to open the cover. The design of the folding safety edge 17 with bidirectional protection is used to prevent the user from being cut after the cover surface is opened, and to improve the safety of use. The design of the full opening structure is convenient for the quick taking out and filling of the contents. Among them, the cover body 1 and the pull ring 2 can be selected as the conventional cover body 1 and pull ring 2 in the art, for example, a standard aluminum alloy cover body 1 or a pull ring 2, the size and shape of which can be flexibly adjusted according to the actual application requirements, such as food packaging or industrial containers.

[0025] The design of the W-shaped folding safety edge 17 of the present application mainly embodies its core advantage in its excellent safety protection function, as follows: (1) Core advantage: effectively eliminate the risk of cutting, the inner safety edge formed by the W-shaped folding will cover the edge of the tongue piece after the cover surface is opened; at the same time, the outer safety edge will cover the edge of the pouring opening. When the user touches the opening part, he no longer touches the exposed sharp edge, but the smooth and covered safety edge, which fundamentally avoids the danger of being cut by the sharp edge.

[0026] (2) Structural advantage: integrated design, firm and reliable, the safety edge is not an additional part, but is folded and processed from the same cover body material (“the cover surface is folded to form a W-shaped folding shape”). The folding process naturally forms the inner safety edge and the outer safety edge with double protection function. The integrated design is more solid than the protective strip pasted or clamped, and is not easy to fall off or shift. There is no need to purchase and install protective parts, which simplifies the manufacturing process and reduces the cost hidden danger. The folding structure can tightly cover to ensure the stability of the protection effect.

[0027] (3) Operation advantage Automatic activation of protection, linkage mechanism: the opening of the safety edge (especially the inner safety edge) is automatically completed with the opening of the cover, without additional action. When the user normally opens the cover, the protection function is started without additional operation. Greatly improve the convenience of use and the necessity of protection. As long as the cover is opened, the protection is in place.

[0028] (4) User care advantage: improve product image, this design reflects the manufacturer's thoughtful consideration of user safety details. Eliminate the psychological burden and safety hazards of using sharp opening products, improve the comfort and safety of users during use. Enhance product competitiveness and brand image, distinguish it from rough and shoddy products with safety hazards.

[0029] In summary, the W-shaped folding safety edge 17 of the present application has the greatest advantage of its firm structure formed by integrated folding, which automatically and accurately covers the dangerous sharp edges of the tongue and the pouring opening when the cover is opened, providing a reliable physical barrier for users and effectively preventing accidents such as cuts. It combines safety, structural firmness, operational convenience and humanized design, and is an excellent solution to the safety problem of sharp edges of products such as cans, metal covers, hard plastic covers, etc.

[0030] In the present application, the cover 1 is also provided with a bird flying scale line 12, which is arranged below the pull ring and close to the rivet 18 on the cover 1, and is used as the first scale line for opening the cover surface of the cover 1. When the pull ring and the rivet 18 break the bird flying scale line 12, the pressure in the can is released, preventing the tongue from flying and injuring people. In the present application, the center arc area of the bird flying scale line 12 is preferably 0.1-0.9mm from the edge of the rivet 18 on the cover 1. When the pull ring and the rivet 18 break the bird flying scale line 12, the roll circle 24 on the pull ring is away from the cover surface, but the hawk mouth 21 of the pull ring has not yet broken the main scale line. Turn over the cover surface again, and complete the initial opening of the cover surface by pressing the hawk mouth 21 of the pull ring to break the cover surface.

[0031] As shown in Figure 8 The bird flying scale line 12 is similar to the shape of a bird spreading its wings, divided into main and auxiliary lines. The main bird flying scale line includes R1 (1-5mm) for initial opening and R2 (3-8mm) for auxiliary tearing opening, and the center distance L3 (5-20mm) between the two ends of R2. The auxiliary bird flying scale line is mainly used to form a barrier effect, which is conducive to the opening of the main bird flying scale line, and does not actually participate in the opening effect of the cover surface. It forms an equidistant relationship with the main bird flying scale line, with a distance L2 (1-3mm).

[0032] The core advantage of the bird flying scale line 12 is that it provides a phased pressure relief mechanism, which significantly improves the safety of the easy-open can opening process, especially preventing "tongue" accidents, as follows: (1) Core advantage: improve the opening safety, prevent "flying tongue" injury When the traditional easy-open can is pulled open at the main score line (usually connected to the tab), the tab and the can lid rivet 18 will have a sudden and violent tearing. If the pressure in the can is too high at this time (such as a gas-containing beverage or a product that deforms the can body due to internal negative pressure), this sudden release of pressure will forcefully push the just-torn lid piece (commonly known as "pull tongue" or "flying tongue") upwards and even out of the can.

[0033] The bird flying scale line 12 is arranged below the tab, close to the rivet 18, and is designed as the "first line of defense" in the opening process. When the tab is lifted, the tab and the lower edge will act on the bird flying scale line 12 first, thereby "tearing" or "breaking" this shorter special score line. At the moment when the bird flying scale line 12 is broken, before the tab is fully turned over and its "hawk beak 21" (the part at the front end of the tab used for pressing down) has contacted or broken the main score line (the real large opening score line), the small area (central arc area) surrounded by the bird flying scale line 12 on the can lid surface is slightly opened, forming a small opening. This small opening instantaneously releases the positive or negative pressure in the can, balancing the pressure difference between the inside and outside of the can. With the smooth release of internal pressure, when the tab continues to turn over and its "hawk beak 21" presses down to break the main score line to open the entire lid, the opening of the can lid becomes very smooth and controllable. The risk of the tab rebounding violently or the lid piece ("flying tongue") being bounced out at high speed due to the sudden release of pressure is greatly reduced.

[0034] (2) Realize phased opening: the existence of the bird flying scale line 12 clearly divides the opening process of the can lid into two steps: First stage (pressure relief): the tab is lifted, the bird flying scale line 12 is broken, and the small area is slightly opened to release pressure (at this time the can lid has not been truly opened, and the contents have not flowed out).

[0035] Second stage (official opening): the tab continues to turn over and press down (using the hawk beak 21), breaking the ring-shaped main score line 11, and finally turning over the lid.

[0036] This phased design avoids the sudden burst during opening, improves the controllability and smoothness of the operation, and the overall opening experience is more stable, smooth, and labor-saving.

[0037] (3) Precise control of the pre-rupture point: the key parameter "L" (the distance between the center arc area score line of the bird flying scale line 12 and the edge of the rivet 18 on the lid body 1) is designed within an extremely small range (0.1-0.9mm). This extremely small distance ensures that the structure of the lower edge 24 under the tab and the edge of the rivet 18 can very accurately and reliably "clamp" or "pull" the bird flying scale line 12 at the initial stage of lifting the tab, ensuring that it can be stably and effectively torn at this moment. This is a prerequisite for realizing the pressure relief function.

[0038] In summary, the advantages of the bird flight scale line 12 of the present invention are as follows: Core Advantage: Safety Guaranteed! By depressurizing the bird's-eye mark 12 at the initial opening of the pressurized can, the possibility of the pull tab violently rebounding or the "flying tongue" popping out at high speed and causing injury due to sudden pressure release is greatly reduced.

[0039] Smooth opening: The phased opening process (first releasing pressure to slightly open a small hole, then officially flipping up the lid) makes the opening action smoother, less strenuous, and more controllable, avoiding a sudden burst of force.

[0040] Ingenious structure and reliable function: The carefully designed position (close to rivet 18) and the extremely small critical distance parameter "L" (0.1-0.9mm) ensure that the pressure relief function is reliably prioritized on the bird flight scale 12 in the initial stage of lifting the pull ring.

[0041] Highly practical: This design is an engineering solution directly addressing a long-standing safety hazard (the risk of a can flapping tongue) during the opening of aluminum cans, and has clear practical value.

[0042] The core value of "Birdfly Scale Line 12" is to integrate the elimination of safety hazards into the initial stage of the opening action. By using a subtle structural change, pressure is released before the opening is fully completed, making the subsequent opening safe and smooth.

[0043] In this invention, the cover 1 further includes: The annular main engraving line 11 serves as the main engraving line for opening the cover of the cover 1. It is preferably circular in shape to ensure that the cover can be fully opened when opened, thus meeting the requirement of full opening.

[0044] The expansion ring 13 and the finger rest 14 form a convex-concave structure to increase the strength of the cover. The expansion ring 13 primarily increases the strength of the cover, shrinks the remaining material after the cover is formed, ensures the cover's pressure resistance, and also achieves an aesthetically pleasing appearance. The finger rest 14 is located below the pull ring opening area, making it easier for fingers to pull up the pull ring 2 when opening. It also forms a convex-concave expansion ring 13 with the cover expansion ring 13, shrinking and flattening the stretched material after the cover is formed, which is more conducive to maintaining the tension and strength of the cover.

[0045] The ring pin 15 is set on the cover surface of the cover body 1 and directly contacts the pull ring 2. It is used to flatten the pull ring 2 and facilitate the opening of the cover.

[0046] The cover nail 16 is arranged on the cover surface of the cover body 1 and located on both sides of the pull ring 2, and is used for supporting the cover surface flat and limiting the rotation of the pull ring 2. It is beneficial to the stability of the cover surface stacking transportation, reduces the cover surface scratch, and at the same time, the cover nail 16 is located on both sides of the pull ring 2, which limits the pull ring 2 and prevents the rotation of the pull ring 2, thereby guaranteeing the opening quality.

[0047] The rivet 18 is arranged on the cover surface of the cover body 1 and is used as the connecting point of the cover surface and the pull ring 2. The rivet 18 is used for riveting the opening pull ring 2 and the cover surface together. When the cover surface is opened, the pull ring 2 pierces the cover surface through the lever action, and then gradually tears the tongue 112 of the cover surface along the trajectory of the notch to open the cover surface.

[0048] The hook edge 19 is used as the outer diameter part of the cover body 1, and the hook edge 19 is mainly used for cooperating with the can body to participate in double seaming and meet the sealing requirements of the can end. The shoulder surface 110 is located in the contact area of the cover surface edge and the can opening, and cooperates with the can opening to ensure the stability of the cooperation between the can end and the can opening.

[0049] The tongue 112 is arranged on the cover surface and located inside the main notch, and is directly associated with the main notch, and is used for tearing along the notch trajectory during opening, and finally completely opening the cover surface.

[0050] In the present application, it also includes: The counter-bore rib 111 is arranged on the cover surface and is used as the pressure-resistant structure of the cover surface, and is used for improving the pressure-resistant capacity of the cover surface. The counter-bore rib 111 is an important pressure-resistant structure of the cover surface, and ensures that the pressure-resistant capacity of the cover surface meets the use requirements of beer or beverage packaging.

[0051] In the present application, the pull ring 2 includes: The pull ring body 20; The hawk mouth 21 is located at the front end of the pull ring 2 and directly contacts the cover surface of the cover body 1, and is used as the key contact point of the pull ring 2 and the cover surface piercing. Preferably, a non-reduction line design is adopted, the cover surface is pierced by the hawk mouth 21 during opening, and the smooth opening of the cover surface is ensured.

[0052] The undulating riveting surface 22 is located in the connecting area of the pull ring body 20 and the cover body 1. The undulating riveting surface 22 of the pull ring 2 is preferably a non-reduction line structure. During opening, the pull ring 2 cooperates with the rivet 18 under the action of the undulating riveting surface 22, drives the cover surface to flip along the bird flight notch, releases the gas pressure in the can, and avoids the injury caused by the flying tongue.

[0053] The handle hole 23 is connected with the pull ring body 20 and is used for the fingers to pass through and exert force to pull up the pull ring body 20. The handle hole 23 is mainly used for the fingers of the customer to pass through during opening, and is the core stress point of the opening operation.

[0054] The roll 24 is arranged at the edge or hand-holding part of the pull ring body 20, and is used as a support when the cover surface of the cover 1 is pulled open. When the cover surface is pulled open, the roll 24 provides support for the force of the fingers, avoids deformation of the pull ring 2 or discomfort to the fingers, and improves the opening comfort.

[0055] The above merely describes the preferred embodiments of the present application. The protection scope of the present application is not limited to this; any person skilled in the art should be covered in the protection scope of the present application within the technical range disclosed by the present application, according to the technical scheme and the improved concept of the present application for equivalent replacement or change.

Claims

1. A child-resistant easy open closure with bidirectional protection, characterized in that, The cover body and the pull ring arranged on the cover body are included. The cover body is provided with a folding safety edge, which is formed in a W-shaped folding shape by folding the cover surface, and forms an inner safety edge and an outer safety edge. When the cover surface is opened, the inner safety edge is used to shield the edge of the tongue, and the outer safety edge is used to shield the edge of the pouring opening, so that the sharp edge of the opening cannot easily cut the user.

2. A child resistant easy open cover with bidirectional protection according to claim 1, characterized in that, The opening diameter D2 of the cover surface when opened and the folded outer diameter D1 and the inner folded edge D3 satisfy ∣D1-D2∣≤1mm, and ∣D2-D3∣≤1mm.

3. A child resistant easy open cover with bidirectional protection according to claim 1, characterized in that, The cover body is further provided with a bird flying scale line, which is arranged below the pull ring and close to the rivet on the cover body. When the pull ring and the rivet are pulled to break the bird flying scale line, the pressure in the can is released, the tongue is prevented from flying and hurting people, and the bird flying scale line serves as the first scale line for opening the cover surface of the cover body.

4. A child resistant easy open cover with bidirectional protection according to claim 3, characterized in that, The center arc area scale line of the bird flying scale line is 0.1-0.9mm away from the edge of the rivet on the cover body.

5. A child resistant easy open cover with bidirectional protection according to claim 1, characterized in that, The cover body further includes the following structures arranged on the cover surface: The annular main scale line serves as the main scale line for opening the cover surface of the cover body, and ensures that the cover surface can be fully opened when opened, meeting the full opening requirement. The expansion ring and the finger platform form a convex-concave structure, which is used to increase the strength of the cover surface. The ring-shaped rivet is arranged on the cover surface of the cover body and directly contacts the pull ring, and is used to support the pull ring flat. The cover supporting rivet is arranged on the cover surface of the cover body and located on both sides of the pull ring, and is used to support the cover surface flat and limit the rotation of the pull ring. The rivet is arranged on the cover surface of the cover body and serves as the connection point of the cover surface and the pull ring. The hook edge serves as the outer diameter part of the cover body, cooperates with the can body, participates in double seaming, and meets the sealing requirement of the can end. The shoulder surface is located in the contact area of the edge of the cover surface and the can opening, cooperates with the can opening, and is used to ensure the stability of the cooperation between the can cover and the can opening. The tongue is arranged on the cover surface and located inside the main scale line, directly associated with the main scale line, and is used to tear along the scale line track when opened, and finally completely open the cover surface.

6. A child resistant easy open cover with bidirectional protection according to claim 5, characterized in that, The cover body further includes: The countersunk rib is arranged on the cover surface and serves as the pressure-resistant structure of the cover surface, and is used to improve the pressure resistance of the cover surface.

7. A child resistant easy open cover with bidirectional protection according to claim 5, characterized in that, The whole annular main scale line is circular.

8. A child resistant easy open cover with bidirectional protection according to any one of claims 1-7, characterized in that, The pull ring includes: The pull ring body; The hawk mouth is located at the front end of the pull ring, directly contacts the cover surface of the cover body, serves as the key contact point for the pull ring and the cover surface to break, adopts a non-reduction line design, breaks the cover surface through the hawk mouth when opened, and ensures that the cover surface is smoothly broken. The undulating riveting surface is located in the connection area of the pull ring body and the cover body. The handle hole is connected with the pull ring body and is used for the finger to pass through and exert force to pull up the pull ring body. The roll circle is arranged on the edge or the holding part of the pull ring body, and is used as a support when the cover surface of the cover body is pulled and opened.

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