Full-opening easy-to-open cover with single safety edge

Abstract

The invention provides a full-opening easy-to-open cover with a single safety edge, and belongs to the technical field of full-opening easy-to-open covers. The cover comprises a cover body and a pull ring arranged on the cover body. The folding safety edge is arranged on the cover body, the cover face is folded to form a Z-shaped folding shape, the folding safety edge has a space shielding relation to the scribed line, and after the cover face is opened, it is guaranteed that a user is not prone to being cut by the sharp edge of the opening through the shielding and space position relation. The folding safety edge is arranged on the cover body, so that it is guaranteed that a user is not prone to being cut, and the direct drinking requirement of beverages or beer is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of full opening easy open end, in particular to a full opening easy open end with single safety edge. BACKGROUND

[0002] The traditional full opening easy open end leaves sharp edge after opening, which is easy to cause customer injury and has hidden danger. In order to solve the safety problem of the edge of the can after opening, especially for the metal package directly used for drinking or taking the content, it is particularly important to design and develop the full opening easy open end with protective edge. SUMMARY

[0003] Therefore, in order to solve the technical problem of safety hidden danger of traditional full opening easy open end after opening, the present application provides a full opening easy open end with single safety edge, which sets a folding safety edge on the cover body, so as to prevent the user from being easily injured and meet the direct drinking requirement of beverage or beer.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme: A full opening easy open end with single safety edge, 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 into a Z-shaped folding shape by folding the cover surface, and the folding safety edge has a spatial shielding relationship with the score line, so that the sharp edge of the opening is not easy to injure the user by using the shielding and spatial position relationship when the cover surface is opened.

[0005] Preferably, the opening diameter D2 of the cover surface opening and the folding diameter D1 satisfy |D1-D2|≤1mm.

[0006] Preferably, a bird flying score line is further arranged on the cover body, the bird flying score line is arranged below the pull ring and close to the rivet on the cover body, which is used to break the bird flying score line by the pull ring and the rivet when opening, release the pressure in the can, prevent tongue flying from injuring people, and serve as the first score line of the cover surface opening of the cover body.

[0007] Preferably, the center arc area score line of the bird flying score line is 0.1-0.9mm away from the edge of the rivet on the cover body.

[0008] Preferably, the cover body further comprises the following arranged on the cover surface thereof: A ring-shaped main score line, which is used as the main score line of the cover surface opening of the cover body, and ensures that the cover surface can be fully opened to meet the full opening requirement; An expansion ring and a finger platform, which form a convex-concave structure and are used to increase the strength of the cover surface; A ring-shaped rivet, which is arranged on the cover surface of the cover body and directly contacts with the pull ring, and is used to support the pull ring flat; The cover nail is arranged on the cover surface of the cover body and is located on both sides of the pull ring, and is used for lifting the cover surface flat and limiting the rotation of the pull ring. The rivet is arranged on the cover surface of the cover body and is used as the connecting point of the cover surface and the pull ring. The hook edge is used as the outer diameter part of the cover body, cooperates with the can body, participates in double seaming, and meets the sealing requirements of the can end The shoulder blade is located in the contact area of the cover surface edge 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 score line, is directly associated with the main score line, is used for tearing along the score line when opening, and finally completely opens the cover surface.

[0009] Preferably, it further comprises: The counter-bore rib is arranged on the cover surface and is used as the pressure-resistant structure of the cover surface to improve the pressure resistance of the cover surface.

[0010] Preferably, the whole of the annular main score line is circular.

[0011] Preferably, the pull ring comprises: The pull ring body; The hawk's beak is located at the front end of the pull ring, directly contacts the cover surface of the cover body, is used as the key contact point of the pull ring and the cover surface piercing, adopts a non-force reduction line design, pierces the cover surface through the hawk's beak when opening, and ensures the smooth breaking of the cover surface; The undulating riveting surface is located in the connecting 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 is arranged on the edge or the hand holding part of the pull ring body and is used as the support when pulling the cover surface of the cover body.

[0012] The full-opening easy-to-open cover with a single safety edge provided by the application has a folding safety edge arranged on the cover body, which can be automatically or manually folded to cover the sharp metal edge after opening the cover, avoiding the direct contact of the fingers and the lips with the sharp part when opening the cover or drinking. The incidence of scratching accidents is reduced, especially for children, the elderly and other vulnerable groups. The safety requirements of direct drinking of beverages (such as beer and soda) are met, and users can directly drink from the can opening without worrying about being cut, improving the product trustworthiness.

[0013] ​(2) Optimizing the use experience, facilitating direct drinking: the full opening design enables the lid to be completely opened or removed, forming a large aperture opening, combined with the folding safety edge, ensuring smooth and unobstructed drinking process. No additional tools or liquid pouring is required, saving time and effort, especially suitable for immediate drinking needs in outdoor activities, after exercise or fast-paced life. The direct drinking experience is more comfortable, the lid does not block the flow of beverages, reduces liquid spillage problems, and improves user satisfaction.

[0014] In summary, the present application solves the technical problem of easy cutting of traditional easy-open lids during direct drinking through the combination of "folding safety edge + full opening". The core advantage is safe and reliable, convenient to use and strong compatibility, which not only improves user satisfaction, but also reduces the cost loss of manufacturers due to cutting complaints. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram of the safety edge full opening lid of the present application; Figure 2 Structure diagram of the safety edge easy-open lid of the present application; Figure 3 Structure diagram of the safety edge partial structure of the present application; Figure 4 Structure diagram of the pull ring of the present application; Figure 5 Bird flight opening diagram of the present application; Figure 6 Cover surface opening diagram of the present application; Figure 7 Structure diagram of bird flight line; In the figure, 1, cover body; 11, annular main line; 12, bird flight line; 13, expansion ring; 14, finger table; 15, ring nail; 16, cover nail; 17, folding safety edge; 18, rivet; 19, hook edge; 110, shoulder blade surface; 111, countersunk rib; 112, tongue; 2, pull ring; 20, pull ring body; 21, hawk mouth; 22, undulating riveting surface; 23, handle hole; 24, round. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application; rather than 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.

[0017] In the description of the present application, it should be pointed out that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on 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.

[0018] In the description of the present application, it should be pointed out 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, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0019] As Figures 1-6 shown, the present application provides a full-opening easy-open cover with a single safety edge, which comprises a cover body 1 and a pull ring arranged on the cover body 1. The cover body 1 is usually made of metal material and has a circular or rectangular profile. The pull ring 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 users to pull to open the cover. The single safety edge design is used to prevent accidental opening of the cover and improve safety, and the full-opening structure allows the cover to be completely removed, which is convenient for quick removal and filling of the contents. Among them, the cover body 1 and the pull ring can be selected as conventional cover body 1 and pull ring in the art, for example, a standard aluminum alloy cover body 1 or a pull ring, the size and shape of which can be flexibly adjusted according to the actual application requirements, such as food packaging or industrial containers.

[0020] The cover body 1 is provided with a folding safety edge 17, which is formed by folding the cover surface into a Z-shaped folding shape. The folding safety edge 17 has a 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 opening sharp edge is not easy to cut the user. The opening diameter D2 and the folding diameter D1 satisfy |D1-D2|≤1mm. The folding safety edge 17 is preferably a single safety edge. Through precise geometric structure and spatial relationship, a passive and efficient safety protection mechanism is provided, which significantly reduces the risk of cutting the user when operating, as follows: (1) Essential safety protection: the Z-shaped folding structure forms a specific geometric shape and spatial layout. When the cover surface is opened, the folding safety edge 17 will "shield" the sharpest part of the cover edge (the sharp edge formed by the score line part) in space. The user's touch point or easy-to-contact part is just behind the protected area, which is physically difficult to contact the sharp edge itself.

[0021] (2) Precision tolerance control ensures effectiveness: |D1-D2|≤1mm (the difference between the folded diameter and the opening diameter is minimal) is the cornerstone of the reliability of this protective function. Such a small tolerance ensures that the spatial positional relationship between the safety edge formed by Z-folding and the actual sharp edge is always stable, regardless of how the tolerance accumulates, and continues to play a shielding role. Excessive tolerance may lead to shielding failure and exposure of the sharp edge. 1mm control is the minimum feasible size chain accumulation control to achieve this safety purpose.

[0022] (3) Efficient structure design: "the folded safety edge 17 is preferably a single safety edge" indicates that the design pursues simplicity and efficiency. The single safety edge structure is generally simpler than the double edge in folding forming (including mold design, assembly steps), and has lower production cost.

[0023] In summary, the present application ingeniously utilizes the spatial relationship formed by bending geometry to achieve an important safety function, and ensures its effectiveness through strict size constraints, while optimizing the structure (single safety edge) to ensure the feasibility, economy and reliability of the overall design. It is a high-efficiency, simple and practical anti-cutting solution.

[0024] In the present application, the cover 1 is also provided with a bird flying 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 line when the pull ring and the rivet 18 break the bird flying line 12 first to release the pressure in the can, prevent the tongue from flying and hurting people, and open the cover surface of the cover 1. In the present application, the distance L between the center arc area line of the bird flying line 12 and the edge of the rivet 18 on the cover 1 is preferably 0.1-0.9mm. When opening, the pull ring breaks the bird flying line 12 together with the rivet 18, at this time, the roll circle 24 on the pull ring leaves the cover surface, but the hawk mouth 21 of the pull ring has not yet pressed the main line to break, and the cover surface is opened by turning over the cover surface again and pressing the hawk mouth 21 of the pull ring to break the cover surface.

[0025] As shown in Figure 7 , the bird flying line 12 is a line similar to the shape of a bird spreading its wings, which is divided into a main line and an auxiliary line. The main bird flying line includes an initial pull opening R1 (1-5mm) and an auxiliary tear opening R2 (3-8mm), and the center distance L3 (5-20mm) between the two ends R2. The auxiliary bird flying line is mainly used to form a barrier effect, which is conducive to the opening of the main bird flying line, and does not actually participate in the opening effect of the cover surface, and forms an equidistant relationship with the main bird flying line, with a distance L2 (1-3mm).

[0026] The core advantage of the bird flying line 12 is that it provides a phased pressure relief mechanism, which significantly improves the safety of the opening process of the easy-open can, especially prevents the "tongue" from hurting people, as follows: (1) Core advantage: improve the opening safety, prevent "fly tongue" injury When the traditional pop can is pulled open 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 gas-containing beverages or products that cause the can body to deform due to internal negative pressure), this sudden release of pressure will forcefully push the just torn lid piece (commonly known as "pull tongue" or "fly tongue") up and even out.

[0027] Bird fly score line 12 is set below the tab, near 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 fly score line 12 first, thereby "tearing" or "breaking" this shorter special score line. At the moment when the bird fly score 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 (center arc area) surrounded by the bird fly score line 12 on the can lid surface is slightly opened, forming a small opening. This tiny 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 operation of the can lid becomes very smooth and controllable. The risk of the tab rebounding violently or the lid piece ("fly tongue") being bounced out at high speed due to the sudden release of pressure is greatly reduced.

[0028] (2) Realize phased opening: the existence of bird fly score line 12 clearly divides the opening process of the can lid into two steps: First stage (pressure relief): the tab is lifted, the bird fly score line 12 is broken, and a 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).

[0029] 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.

[0030] This phased design avoids the sudden burst when opening, improves the controllability and smoothness of the operation, and the overall opening experience is more stable, smooth, and labor-saving.

[0031] (3) Precise control of the pre-rupture point: the key parameter "L" (the distance between the center arc area score line of the bird fly score line 12 and the edge of the rivet 18 on the lid 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 fly score line 12 at the beginning of the tab lifting, ensuring that it can be stably and effectively torn at this moment. This is a prerequisite for pressure relief.

[0032] In summary, the advantages of the bird flight line 12 of the present application are as follows: Core advantage: safety! By breaking the bird flight line 12 to release pressure at the initial stage of opening the pressurized easy-open can, the possibility of the ring violently rebounding or the "flying tongue" being ejected at high speed to cause injury due to sudden pressure release is greatly reduced.

[0033] Smooth opening: The phased opening process (first releasing pressure and slightly opening a small hole, and then formally turning up the cover surface) makes the opening operation more smooth, labor-saving and controllable, avoiding sudden burst feeling.

[0034] Sophisticated structure and reliable function: The carefully designed position (close to the rivet 18) and the extremely small key distance parameter "L" (0.1-0.9mm) ensure that the bird flight line 12 can be reliably acted on at the initial stage of lifting the ring, realizing its pressure relief effect.

[0035] Strong practicality: The design is an engineering solution directly to solve a long-standing specific safety hazard (flying tongue risk) in the opening process of the easy-open can, and has clear practical value.

[0036] The core value of the "bird flight line 12" is to integrate the elimination of safety hazards into the initial stage of the opening operation, and to release pressure before formal opening by using a delicate small structure change, so that the subsequent opening becomes safe and smooth.

[0037] In the present application, the cover body 1 further comprises: The annular main line 11 is the main line of the cover surface opening of the cover body 1, and is preferably circular as a whole, which ensures that the cover surface can be fully opened and meets the full opening requirement.

[0038] The expansion ring 13 and the finger platform 14 form a convex-concave structure for increasing the strength of the cover surface. The expansion ring 13 mainly increases the strength of the cover surface, shrinks the remaining material after the cover surface is formed, ensures the pressure resistance of the cover surface, and meets the aesthetic effect of the cover surface. The finger platform 14 is below the ring opening area, which is convenient for the finger to lift the ring 2 during opening, and forms a convex-concave expansion ring 13 with the cover surface expansion ring 13, which shrinks the material after the cover surface is stretched and formed, and is more conducive to maintaining the tension and strength of the cover surface.

[0039] The ring nail 15 is arranged on the cover surface of the cover body 1 and directly contacts the ring 2, which is used to support the ring 2 flat, and is convenient for opening the cover surface.

[0040] The cover nail 16 is arranged on the cover surface of the cover body 1 and is 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 forms a limiting effect on the pull ring 2, and is beneficial to the anti-rotation of the pull ring 2, and guarantees the opening quality.

[0041] 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 effect, and then gradually tears the tongue 112 of the cover surface along the trajectory of the notch to open the cover surface.

[0042] 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 tongue 112 is arranged on the cover surface and is located inside the main notch line, is directly associated with the main notch line, and is used for tearing along the notch trajectory during opening, and finally completely opening the cover surface.

[0043] In the application, the following are further included: The counter-bore rib 111 is arranged on the cover surface and is used as a 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 guarantees that the pressure-resistant capacity of the cover surface meets the use requirements of beer or beverage packaging.

[0044] In the application, the pull ring 2 comprises: 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, and preferably adopts a non-reduction line design. When opening, the hawk mouth 21 pierces the cover surface, and ensures that the cover surface is smoothly broken.

[0045] The undulating riveting surface 22 is located at 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. When 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 line, releases the gas pressure in the can, and avoids the injury caused by the flying tongue.

[0046] 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.

[0047] 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.

[0048] 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 full open easy open end with a single safety rib 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 Z-shaped folding shape by folding the cover surface, and has a space shielding relationship with the score line. When the cover surface is opened, the opening sharp edge is not easy to cut the user by using the shielding and space position relationship.

2. A full open easy open end with a single securement panel according to Claim 1 characterized in that, The opening diameter D2 of the cover surface opening and the folding diameter D1 satisfy |D1-D2|≤1mm.

3. A full open easy open end with a single security band according to claim 1 characterized in that, The cover body is further provided with a bird flying score 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 score line, the pressure in the can is released, the tongue flying is prevented from hurting people, and the bird flying score line serves as the first score line for opening the cover surface of the cover body.

4. A full open easy open end with a single security band according to claim 3 characterized in that, The center circular arc area score line of the bird flying score line and the rivet edge of the cover body have a distance L of 0.1-0.9mm.

5. A full open easy open end with a single securement panel according to Claim 1 characterized in that, The cover body further includes the following arranged on the cover surface: The annular main score line serves as the main score line for opening the cover surface of the cover body, and ensures that the cover surface can be fully opened to meet the full opening requirement. The expansion ring and the finger platform form a convex-concave structure for increasing the strength of the cover surface. The ring nail is arranged on the cover surface of the cover body and directly contacts the pull ring, and is used for supporting the pull ring flat. The cover supporting nail is arranged on the cover surface of the cover body and located on both sides of the pull ring, and is used for supporting the cover surface flat and limiting the rotation of the pull ring. The rivet is arranged on the cover surface of the cover body and serves as the connecting 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 blade surface is located in the contact area of the cover surface edge and the can opening, cooperates with the can opening, and is used for ensuring the stability of the cooperation between the can cover and the can opening. The tongue piece is arranged on the cover surface and located inside the main score line, directly related to the main score line, and is used for tearing along the score trace when opening, and finally completely opening the cover surface.

6. A full open easy open end with a single security band according to claim 5 characterized in that, Further including: The countersunk rib is arranged on the cover surface and serves as the pressure-resistant structure of the cover surface, and is used for improving the pressure resistance of the cover surface.

7. A full open easy open end with a single security band according to claim 5 wherein, The whole of the annular main score line is circular.

8. A full open easy open end with a single security band according to any of claims 1-7, wherein, 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 force line design, breaks the cover surface through the hawk mouth when opening, and ensures that the cover surface is smoothly broken. The undulating riveting surface is located in the connecting 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 apply 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 pulling the cover surface of the cover body.

Images