Pull ring and easy-to-open cover

Abstract

The utility model discloses a pull ring and an easy-to-open lid, the easy-to-open lid comprises a lid body, a pull ring and a rivet, the lid body is provided with a rivet hole, and the pull ring is riveted on the lid body through the rivet penetrating into the rivet hole and the rivet hole; the pull ring comprises a pull ring body, the pull ring body is provided with a pressing part, a rivet hole and a buckling part, and the inner wall of the rivet hole is at least provided with a first concave part which is sunken along the inner wall of the rivet hole or / and at least one first convex part which protrudes out of the inner wall of the rivet hole. In the riveting process, materials on the periphery of the rivet can be filled towards the first concave part, so that a protruding part combined with the first concave part is formed on the periphery of the rivet, combination among the rivet, the rivet hole and the pull ring is enhanced, the binding force of the pull ring relative to the easy-to-open cover can be increased, relative rotation of the pull ring can be prevented, and the service life of the easy-to-open cover is prolonged. Therefore, it is guaranteed that the pressure starting part on the pull ring can be always located at the opening position of the cutting line area, and the problem that the pull ring is inconvenient to open or fails to open due to the fact that the pressure starting part and the cutting line area are staggered due to rotation of the pull ring is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of easy-open cans, in particular to a pull ring and an easy-open cover. Background Art

[0002] The easy-open cover is mounted on the can and is used to form a sealed cover for the beverage / food in the can. When opened, the easy-open cover can be detached from the can, so that the opening of the can is in an open state, making it easy to obtain the beverage / food in the can. At present, the pull ring on the easy-open cover is riveted to the easy-open cover by rivets, so that the pull ring and the easy-open cover are relatively fixed. In order to enhance the stability of the pull ring when it is placed on the easy-open cover, a constraint groove is also provided on the easy-open cover to constrain the pull ring, so as to reduce the possibility of the pull ring being offset on the easy-open cover. However, when the pull ring is pulled upward to open, the pull ring is no longer in contact with the cover body. The pull ring is mainly fixed to the easy-open cover by rivets. In actual use, when the pull ring is pulled, there is a possibility that the pull ring will rotate around the rivet, which will change the position of the opening end on the pull ring and cause it to be offset, thereby affecting the normal opening of the easy-open cover. Based on this, it is necessary to study a method to further enhance the connection ability between the pull ring and the riveted part to solve the above problem. Utility Model Content

[0003] In view of the above problems, the purpose of the present invention is to provide a pull ring and an easy-open cover that enhance the connection ability between the pull ring and the rivet.

[0004] The technical solution for realizing the present utility model is as follows

[0005] A pull ring comprises a pull ring body, which is provided with a pressure-generating portion, a rivet hole, and a buckling portion. The inner wall of the rivet hole is provided with at least one first recessed portion formed along the inner wall of the rivet hole and / or at least one first protrusion protruding from the inner wall of the rivet hole.

[0006] In a further embodiment of the present application: when two or more first concave portions or first convex portions are provided, they are arranged on the inner wall of the rivet hole in an interval manner.

[0007] In a further embodiment of the present application: when a plurality of first concave portions and first convex portions are provided, they are formed to be distributed over the inner wall of the rivet hole in an alternating or continuous undulating manner or distributed over a portion of the inner wall of the rivet hole.

[0008] In a further embodiment of the present application: the first recess is formed by punching along the inner wall of the rivet hole.

[0009] In a further embodiment of the present application: the first protrusion is formed by extending from the inner wall of the rivet hole toward the middle of the rivet hole.

[0010] In a further embodiment of the present application: the first recess is in a flared shape with the recessed portion being larger than the recessed bottom.

[0011] In a further embodiment of the present application: the first recess is an arc-shaped groove smaller than a semicircle, and the notch of the arc-shaped groove and the inner wall of the rivet hole adopt an arc-shaped surface transition.

[0012] In a further embodiment of the present application: when there are two or more first concave portions or first convex portions, the rivet holes are arranged on the inner wall close to the buckling portion.

[0013] The utility model relates to an easy-open cover, comprising a cover body, a rivet, a rivet hole on the cover body, and a pull ring. The pull ring is inserted into the rivet hole through the rivet and is riveted to the cover body through the rivet hole.

[0014] In a further embodiment of the present application: the outer peripheral wall of the rivet is provided with at least one second recessed portion formed along the outer peripheral wall of the rivet or / and at least one second protruding portion protruding from the outer peripheral wall of the rivet;

[0015] In a further embodiment of the present application: the first concave portion corresponds to the second convex portion, and the first convex portion corresponds to the second concave portion.

[0016] In a further embodiment of the present application: the second concave portion / the second convex portion is arranged axially along the outer wall of the rivet.

[0017] By adopting the above technical solution, the rivet is passed through the rivet hole. During the riveting process, the material on the periphery of the rivet will fill into the first recess when the rivet is formed, thereby forming a protrusion on the periphery of the rivet that is combined with the first recess, thereby enhancing the bonding ability between the rivet and the rivet hole and the pull ring, and increasing the bonding force of the pull ring relative to the easy-open cover, and preventing the relative rotation of the pull ring, so as to ensure that the pressure-generating part on the pull ring can always be in the open position of the score line area, avoiding the problem of misalignment between the pressure-generating part and the score line area due to the rotation of the pull ring, which leads to inconvenience in opening the pull ring or failure to open the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the first structure of the pull ring in the utility model;

[0019] Figure 2 This is a schematic diagram of the second structure of the pull ring in the utility model;

[0020] Figure 3 This is a schematic diagram of the third structure of the pull ring in the utility model;

[0021] Figure 4 This is a schematic diagram of the fourth structure of the pull ring in the utility model;

[0022] Figure 5 This is a schematic structural diagram of the easy-open cover in the present utility model;

[0023] Figure 6 for Figure 5 A magnified schematic diagram of part A in FIG;

[0024] In the accompanying drawings, 10, the pull ring body, 11, the pressure-generating portion, 12, the rivet hole, 13, the buckling portion, 14, the first recessed portion, 15, the first convex portion, 16, the cover body, and 17, the rivet. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0027] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0028] See Figure 1 As shown in FIG6 , a pull ring includes a pull ring body 10, on which a pressure portion 11, a rivet hole 12, and a buckle portion 13 are provided. When the pull ring is buckled from the buckle portion 13, the pressure portion 11 can press the score line area on the easy-open cover, breaking a part of the easy-open cover panel along the score line, forming an opening in the easy-open cover panel to form an open state. The inner wall of the rivet hole 12 is provided with at least one first recessed portion 14 formed along the inner wall of the rivet hole 12, as shown in FIG6 . Figure 1The first pull ring structure is shown; during the manufacturing process, the rivet is passed through the rivet hole 12. During the riveting process, the material around the rivet will fill into the first recess 14 when the rivet is formed, thereby forming a protrusion on the periphery of the rivet that is combined with the first recess 14, thereby enhancing the bonding ability between the rivet and the rivet hole 12 and the pull ring, and increasing the bonding force of the pull ring relative to the easy-open cover, and preventing the relative rotation of the pull ring, so as to ensure that the pressure-raising portion 11 on the pull ring can always be in the open position of the score line area, avoiding the problem of misalignment between the pressure-raising portion 11 and the score line area due to the rotation of the pull ring, which leads to inconvenience in opening the pull ring or failure to open.

[0029] like Figure 2 A second pull ring structure is shown. Compared with the first pull ring structure, a first recess 14 is provided on the inner wall of the rivet hole 12. At least one first convex portion 15 protruding from the inner wall of the rivet hole 12 can be further provided on the inner wall of the rivet hole 12, and exists at the same time as the first recess 14. During the riveting process, a part of the outer periphery of the rivet is filled into the first recess 14, and the first convex portion 15 is filled into the outer peripheral surface of the rivet, so as to further increase the bonding ability between the rivet and the rivet hole 12.

[0030] like Figure 3 A third pull ring structure is shown. Compared with the first and second pull ring structures mentioned above, the third pull ring structure only has at least one first protrusion 15 protruding from the inner wall of the rivet hole 12. During the riveting process, the first protrusion 15 is filled toward the outer peripheral surface of the rivet, thereby combining the rivet and the rivet hole 12.

[0031] In some implementations, when there are two or more first concave portions 14 or first convex portions 15, they are arranged on the inner wall of the rivet hole 12 in an interval manner. Figure 1 、 3 As shown, there are multiple filling and bonding positions between the rivet and the rivet hole 12 to increase the bonding ability between the rivet and the rivet hole 12. The multiple first concave portions 14 / first convex portions 15 can be distributed over the entire inner wall of the rivet hole 12 or can be distributed over a portion of the inner wall of the rivet hole 12.

[0032] In some implementations, when there are multiple first concave portions 14 and first convex portions 15, they are formed to be alternately or continuously undulating and spread over the inner wall of the rivet hole 12 or distributed over a portion of the inner wall of the rivet hole 12. Figure 2 In the embodiment shown in FIG. 1 , the first concave portion 14 and the first convex portion 15 are arranged alternately; Figure 4A fourth pull ring structure is shown, employing a first concave portion 14 and a second convex portion arranged adjacent to each other to form a continuous undulating pattern. The configuration can be arranged across the entire inner wall of the rivet hole 12 or only partially within the inner wall of the rivet hole 12. These configurations can further increase the bonding surface between the rivet and the inner wall of the rivet hole 12, improving bonding stability and enhancing the pull ring's ability to resist rotation.

[0033] In some implementations, the first recess 14 is formed by punching along the inner wall of the rivet hole 12, that is, the first recess 14 is formed by punching along the inner wall of the rivet hole 12. The first recess 14 passes through the rivet hole 12 from top to bottom, so that the outer periphery of the rivet is filled into the first recess 14 during the subsequent riveting process.

[0034] In some implementations, the first protrusion 15 is formed by extending from the inner wall of the rivet hole 12 toward the middle of the rivet hole 12 . During the formation of the rivet hole 12 , a retained portion extending toward the middle of the rivet hole 12 is retained at the position of the inner wall of the rivet hole 12 to form the first protrusion 15 .

[0035] In some embodiments, the first recess 14 is a flared shape with a recessed portion larger than the recessed bottom. The first recess 14 may preferably be smaller than a semicircular arc-shaped groove, and the notch of the arc-shaped groove and the inner wall of the rivet hole 12 adopt an arc-shaped surface transition to ensure that the rivet can be smoothly and stably filled into the first recess 14 during the riveting and filling process of the outer periphery. When multiple arc-shaped grooves are provided, after projection from top to bottom, the centers of the multiple arc-shaped grooves are on the same circle to ensure the balance of force between the rivet hole and the rivet; of course, the first recess 14 may also adopt other cross-sectional shapes, such as a V-shaped groove or a W-shaped groove with an arc-shaped bottom. Taking into account the amount of expansion and filling of the outer periphery of the rivet under pressure toward the first recess 14 during the riveting process, the depth of the first recess 14 should be less than the radial expansion deformation distance during the riveting process to ensure that the expanded part of the outer periphery of the rivet can fill the first recess 14.

[0036] like Figure 5 As shown, an easy-open lid is mainly used on cans with fully opened lids, but it is also possible to use it on other types of cans that do not require a pull ring to rotate during the opening process; it includes a lid 16, a rivet 17, a rivet hole on the lid 16, and a pull ring, which is inserted into the rivet hole 12 through the rivet 17 and riveted to the lid 16 through the rivet hole. Figure 6As shown, only a first recess 14 is provided on the inner wall of the rivet hole 12. During the riveting process between the pull ring and the lid 16, the outer periphery of the rivet 17 is pressed toward the first recess 14, forming a bond between the outer wall of the rivet 17 and the first recess 14, thereby preventing the pull ring from rotating. By strengthening the bond between the rivet 17 and the rivet hole 12, the pull ring's anti-rotation capability is improved before use and during the pull ring pulling process. This prevents the pull ring from rotating relative to the rivet 17, resulting in a change in the pull ring's position, namely, a change in the position of the pull ring's pressure-generating portion 11, which would affect the ease of opening the easy-open lid. During use, when the pull ring is pulled, the entire pull ring moves at the riveted joint, and the pressure-generating portion 11 at the front end of the pull ring presses downward, creating a tearing gap between the lid 16 and the can. The pull ring can then be pulled to remove the lid 16 from the can.

[0037] The outer peripheral wall of rivet 17 is provided with at least one second recessed portion, formed along the outer wall of rivet 17, and / or at least one second protrusion, protruding from the outer wall of rivet 17. The first recessed portion 14 corresponds to the second protrusion, and the first protrusion 15 corresponds to the second recessed portion; that is, the first recessed portion 14 corresponds to the second protrusion in position and shape, and the first protrusion 15 corresponds to the second recessed portion in position and shape. The second recessed portion / second protrusion is arranged axially along the outer wall of rivet 17. The length of the second recessed portion and the second protrusion along the outer wall of rivet 17 is greater than the depth of rivet hole 12. When the first recessed portion 14 is provided on the inner wall of rivet hole 12, a second protrusion can be provided on the outer wall of rivet 17. The second protrusion can be inserted into the first recessed portion 14. In this way, when rivet 17 is riveted, the second protrusion fills the first recessed portion 14, further improving the ability of the outer wall of rivet 17 to fill the first recessed portion 14. Similarly, when the first protrusion 15 is provided on the inner wall of the rivet hole 12, a second recess can be provided on the outer wall of the rivet 17, with the first protrusion 15 positioned within the second recess, to ensure the filling and bonding strength between the first protrusion 15 and the second recess during riveting. When both the first protrusion 15 and the first recess 14 are provided on the inner wall of the rivet hole 12, a second protrusion and a second recess are also provided on the outer wall of the rivet 17, with the first protrusion 15 positioned within the second recess and the second protrusion positioned within the first recess 14, to enhance the filling and bonding strength.

[0038] When the first convex portion 15 is provided on the inner wall of the rivet hole 12 and the second concave portion is provided on the outer wall of the rivet 17, or the first concave portion 14 is provided on the inner wall of the rivet hole 12 and the second convex portion is provided on the outer wall of the rivet 17, during the riveting process, the convex portion is located in the corresponding concave portion. At this time, the shape of the concave portion is not limited to a flared structure in which the notch portion is larger than the bottom of the concave portion, but a concave structure in which the notch portion is smaller than or equal to the bottom of the concave portion can also be adopted.

[0039] When there are two or more first recesses or first protrusions, they can be mainly arranged on the inner wall of the rivet hole 12 close to the buckle portion 13. This is because when the buckle portion is lifted with a finger, the buckle portion is tilted upward, and the pressure portion 11 is pressed downward. The possibility of the pressure portion 11 rotating is smaller than that of the buckle portion 13. Therefore, a small number of recesses / protrusions are used to effectively prevent the pull ring from rotating during activation.

[0040] Finally, it should be noted that the above embodiments are merely preferred embodiments of the present invention and are intended to illustrate the technical solutions of the present invention, rather than to limit them, let alone the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A pull ring, comprising a pull ring body, the pull ring body being provided with a pressure portion, a rivet hole, and a buckle portion, characterized in that: The inner wall of the rivet hole is provided with at least one first concave portion formed along the inner wall of the rivet hole and / or at least one first convex portion protruding from the inner wall of the rivet hole.

2. The pull ring according to claim 1, wherein When there are two or more first concave portions or first convex portions, they are arranged on the inner wall of the rivet hole in an interval manner.

3. The pull ring according to claim 1, wherein: When a plurality of first concave portions and first convex portions are provided, they are formed in an alternating or continuous undulating manner and are distributed all over the inner wall of the rivet hole or on a part of the inner wall of the rivet hole.

4. The pull ring according to claim 1, wherein: The first recess is formed by punching along the inner wall of the rivet hole.

5. The pull ring according to claim 1, wherein: The first protrusion is formed by extending from the inner wall of the rivet hole toward the middle of the rivet hole.

6. The pull ring according to claim 1, wherein: The first concave portion is in an expanded shape with the concave portion being larger than the concave bottom.

7. The pull ring according to claim 1, wherein: The first recessed portion is an arc-shaped groove smaller than a semicircle, and the notch of the arc-shaped groove and the inner wall of the rivet hole adopt an arc-shaped surface transition.

8. The pull ring according to claim 1, wherein: When two or more first concave portions or first convex portions are provided, they are arranged on the inner wall of the rivet hole close to the buckling portion.

9. An easy-open lid, comprising a lid body and a rivet, wherein the lid body has a rivet hole, characterized in that: It also includes the pull ring according to any one of claims 1 to 8, wherein the pull ring is inserted into the rivet hole through a rivet, and the rivet hole is riveted to the cover body.

10. The easy-open end according to claim 9, wherein: The outer peripheral wall of the rivet is provided with at least one second concave portion formed along the outer wall of the rivet and / or at least one second convex portion protruding from the outer wall of the rivet; The first concave portion corresponds to the second convex portion, and the first convex portion corresponds to the second concave portion.

Images