All-metal cover connecting structure and all-metal can

Abstract

The utility model discloses an all-metal cover connecting structure and an all-metal can, which comprises a metal base and a metal cover body, the metal cover body is rotatably connected to the metal base and can turn over relative to the metal base to open or close an upper opening of the metal base, and the metal base can be sleeved on a can body; the metal cover body is of an integrated structure, a through mounting hole is formed in the side wall of the metal cover body, and a pivoting part is formed between the mounting hole and the bottom edge of the side wall of the cover body; the side wall of the metal cover body is connected with a metal connecting piece, the metal connecting piece is bent, and the tail end of the metal connecting piece penetrates through the mounting hole to form a pivoting cavity at least half surrounding the pivoting part, so that the pivoting part is rotationally connected into the pivoting cavity, and the metal cover body is limited to be separated from the metal base. And the metal cover body turns around the metal base by taking the pivoting part as a rotating shaft so as to open and close the upper opening. Compared with the prior art, the utility model has the advantages of simple structure, low cost, good wear resistance, attractive appearance and environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of packaging, and in particular to an all-metal cap connection structure for metal tubes. Background Technology

[0002] Currently, common packaging materials in the packaging industry include glass, paper, plastic, metal, and composite materials. Among these materials, glass has poor impact resistance and is too heavy, limiting its application and making it difficult to use for disposable packaging. Paper has poor sealing and corrosion resistance, while plastic causes serious pollution. Metal packaging has both good sealing and corrosion resistance, but its cost is often high, and tinplate is currently the most commonly used material for metal packaging.

[0003] Tinplate, also known as tin-plated sheet steel, refers to cold-rolled low-carbon sheet or strip steel plated on both sides with commercially pure tin. Tin primarily serves to prevent corrosion and rust. It combines the strength and formability of steel with the corrosion resistance, solderability, and aesthetic appearance of tin into a single material, possessing characteristics such as corrosion resistance, non-toxicity, high strength, and good ductility. However, when using tinplate containers, plastic lids are often used as caps. This makes it difficult to use the same printing process for both the container body and the lid, resulting in a less attractive appearance. Furthermore, when the container is recycled, the lid still contributes to contamination.

[0004] Referring to Chinese patent CN202021250113, when a metal cap is used as the lid of a container, the cap and the container body are often completely separate. The cap is attached to the container body by a threaded connection or directly snapped onto the container body. This connection method often causes inconvenience to users.

[0005] To address this, Chinese Patent CN 218432650U discloses a metal can lid comprising a metal top cover, a metal bottom ring, and a rotating shaft. Hollow scrolls surrounding the rotating shaft are rolled onto both the metal top cover and the metal bottom ring, allowing the metal top cover to be flipped open and closed relative to the metal bottom ring. However, although this can lid is an all-metal lid, the structure between the metal top cover and the metal bottom ring is complex, and a rotating shaft is necessary for their rotational connection.

[0006] Referring to Chinese Patent CN 218752383U, a can lid is disclosed, including a base, a top cover, and a pivot. The top cover and base are metal parts, and the pivot is a plastic part with two rotatable parts. The two parts of the plastic part engage with the top cover and base respectively, allowing the top cover to flip open and close relative to the base. Although this structure is relatively simple, it still requires the participation of plastic parts. Plastic parts are not only more fragile than metal bodies, making them prone to breakage and damage, thus affecting the overall stability and protective ability of the lid, but also the texture and color of the plastic connector are difficult to match perfectly with the metal lid. If the integration is not clever enough, it will appear visually jarring, reducing the overall aesthetics and sophistication of the product. In terms of environmental protection, metal lids are easily recyclable materials. With the addition of plastic connectors, the recycling processes for metal and plastic are completely different, increasing the difficulty of separation and recycling. Improper handling will lead to more resource waste, which is inconsistent with the current trend of environmental protection. Therefore, existing can lids have high requirements for the precision of the connection parts, high installation requirements, and the plastic connectors must fit the metal lid perfectly. In addition, mass production efficiency is low, production cost is high, and the connection is prone to wear and detachment, which is not aesthetically pleasing.

[0007] Therefore, there is an urgent need for an all-metal can lid and can body that can solve the above problems. Utility Model Content

[0008] The purpose of this utility model is to provide an all-metal cap connection structure and an all-metal can, which is simple in structure, low in cost, has good wear resistance, and is also aesthetically pleasing and environmentally friendly.

[0009] To achieve the above objectives, this utility model provides an all-metal cap connection structure, including a metal base and a metal cap body. The metal cap body is rotatably connected to the metal base and can be flipped relative to the metal base to open or close the upper opening of the metal base. The metal base can be fitted onto a can. The metal cap body is an integral structure, and a through mounting hole is provided on the side wall of the cap body. A pivot portion is formed between the mounting hole and the bottom edge of the side wall of the cap body. A metal connecting piece is connected to the side wall of the metal cap body, which mates with the pivot portion. The metal connecting piece is bent and its end passes through the mounting hole to form a pivot cavity that at least partially surrounds the pivot portion, so that the pivot portion is rotatably connected to the pivot cavity and the metal cap body is restricted from detaching from the metal base. This allows the metal cap body to flip around the metal base about the pivot portion as a rotation axis to open or close the upper opening.

[0010] Preferably, the connecting piece bends from the lower side of the cover sidewall toward one side of the cover sidewall in the inward direction and extends to the corresponding position of the mounting hole, and bends from one side of the mounting hole in the inward direction to the other side of the mounting hole in the inward direction to form a pivot cavity that partially surrounds the pivot portion.

[0011] Preferably, the metal base includes a bottom ring and a top ring protruding from the bottom ring. The bottom ring and the top ring are integrally connected and form a stepped structure between them. The lower edge of the metal connecting piece extends to the bottom ring. When the metal cover is placed on the metal base, it abuts against the stepped structure. This design makes the metal connecting piece less prone to deformation due to the downward pressure of the metal cover and provides good load-bearing capacity.

[0012] Specifically, the metal cover includes an integrally connected top and sidewalls; the metal base includes a bottom ring and a top ring protruding from the bottom ring, the bottom ring and the top ring being integrally connected and forming a stepped structure between them; when the metal cover is placed on the metal base, the sidewalls of the cover are fitted over the top ring and the bottom edge of the sidewalls abuts against the stepped structure, and the top of the cover closes the opening of the top ring; the metal connecting piece bends outward to the outside of the pivot and then bends around the pivot from the outside of the pivot and into the mounting hole to form a pivot cavity that semi-encloses the pivot.

[0013] Preferably, the lower edge of the cover sidewall is curled to form a first rolled edge, so that the pivot portion includes a rolled edge portion.

[0014] More preferably, the lower wall of the mounting hole is adjacent to or extends to the first rolled edge so that the pivot portion is rolled.

[0015] Specifically, the cross-section of the first rolled edge is circular or elliptical, which facilitates its use as a natural pivot. The cross-section of the first rolled edge is circular or elliptical, so that the pivot portion is circular or elliptical.

[0016] Preferably, the end of the metal connecting piece bends upward or downward after passing through the mounting hole to prevent scratching the user, and can also be bent to the inside of the cover sidewall or the inside of the pivot to further prevent the metal cover and the metal base from detaching.

[0017] Preferably, the metal base has a through-hole at a distance between its sidewall and upper edge, and the lower edge of the metal connecting piece is integrally connected to the lower sidewall of the through-hole. That is, the metal connecting piece is formed by cutting and bending a section from the sidewall of the metal base at a distance from its upper edge.

[0018] Preferably, the lower edge of the sidewall of the metal base is curled to form a second curled edge, and the upper edge of the sidewall of the metal base is curled to form a third curled edge.

[0019] Preferably, both the metal base and the metal cover are thin metal sheet stampings, and the sidewall thickness of the metal base and the cover sidewall thickness are 0.15mm-0.3mm. The thin metal sheet is made of tinplate, aluminum sheet, or stainless steel sheet, etc.

[0020] Preferably, the all-metal cap connection structure for metal cans further includes a locking switch assembly. The metal base has a through hole and a locking hole located above the through hole and covered by the metal cap. The locking switch assembly includes a locking body, elastic arms that bend and extend laterally from the locking body, a spherical protrusion formed on the locking body and capable of extending into the locking hole, and a switch protrusion formed on the locking body and capable of extending into the through hole. The ends of the two elastic arms are fixed to the inner wall of the metal base by rivets, and the spherical protrusion extends through the locking hole to the outside of the side wall of the metal base. The switch protrusion extends through the through hole to the outside of the side wall of the metal base. Pressing or releasing the switch protrusion can cause the spherical protrusion to extend inward or extend outward under elastic action from the locking hole. This design makes the connection between the metal cap and the metal can more stable and provides better sealing.

[0021] More preferably, a switch button is mounted on the switch protrusion. The switch button engages with the switch protrusion; alternatively, the switch button can be welded or riveted to the switch protrusion.

[0022] This utility model also provides an all-metal can, including a metal can body and a metal lid. The metal lid includes the all-metal lid connection structure for the metal can as described above, and the metal base is sleeved on the metal can body and engages with the metal can body.

[0023] Compared with existing technologies, the all-metal can lid of this invention features a pivot portion formed by a groove in the metal lid, serving as a rotating axis for flipping. A pivot cavity, which can be bent into a mounting hole and surrounds the pivot portion, is connected to a metal base. This allows the metal lid to rotate around the metal base about the pivot portion as a rotation axis to open and close the upper opening. No separate rotation axis is required, resulting in a simple structure and low cost. Furthermore, since the all-metal can lid and metal base are rotatably connected by a bent metal connecting piece and the pivot portion, it exhibits good wear resistance, is aesthetically pleasing, environmentally friendly, and easy to recycle. Attached Figure Description

[0024] Figure 1 This is a perspective view of the all-metal can lid of this utility model.

[0025] Figure 2 yes Figure 1 Cross-sectional view.

[0026] Figure 3yes Figure 2 Enlarged view of part a.

[0027] Figure 4 This is a perspective view of the all-metal can of this utility model when opened.

[0028] Figure 5 yes Figure 4 Cross-sectional view.

[0029] Figure 6 yes Figure 5 Enlarged view of part b in the middle.

[0030] Figure 7 This is an exploded view of the all-metal can lid of this utility model.

[0031] Figure 8 This is a perspective view of the all-metal can lid of this utility model from another angle.

[0032] Figure 9 This is a three-dimensional view of the all-metal can lid of this utility model from another angle.

[0033] Figure 10 This is a structural diagram of the assembly of the metal bottom cover and the latching switch assembly of this utility model.

[0034] Figure 11 yes Figure 10 The exploded diagram.

[0035] Figure 12 yes Figure 2 A magnified view of section c. Detailed Implementation

[0036] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0037] refer to Figure 1 This invention discloses an all-metal can, comprising a metal can body and a metal lid 100. The metal lid 100 includes a metal base 20 and a metal lid body 10. The metal base 20 is sleeved on the metal can body and engages with the upper end of the metal can body, such that the upper opening of the metal base 20 is called the upper opening of the metal can body. The metal lid body 10 is rotatably connected to the metal base 20 and can be flipped relative to the metal base 20 to open or close the upper opening of the metal base 20. The all-metal can of this invention can be used to hold solid objects, such as powdered food like milk powder.

[0038] The metal can includes a bottom cover and a can body, with a rolled edge at the upper end of the can body. The metal cover 10 covers the metal base 20 and can close or open the upper opening of the metal base 20, which can be fitted onto the can body.

[0039] refer to Figures 1 to 7 The metal cover 10 includes an integrally connected top cover 11 and a side wall cover 12. The metal cover 10 is a one-piece structure, and a through mounting hole 13 is provided on the side wall cover 12. A pivot portion 14 is formed between the mounting hole 13 and the bottom edge of the side wall cover 12. (See reference...) Figure 3 The edge of the cover 11 has a sealing gasket 30. When the metal cover 10 is placed on the metal base 20, the sealing gasket 30 is clamped between the lower surface of the cover 11 and the upper edge of the metal base 20 to enhance the sealing of the metal cover 100.

[0040] refer to Figures 1 to 7 The sidewall of the metal cover 10 is connected to a metal connecting piece 23 that mates with the pivot portion 14. The metal connecting piece 23 is bent so that its end passes through the mounting hole 13 to form a pivot cavity 231 that at least partially surrounds the pivot portion 14. This allows the pivot portion 14 to be rotatably connected within the pivot cavity 231 and prevents the metal cover 10 from disengaging from the metal base 20. Consequently, the metal cover 10 can rotate around the metal base 20 about the pivot portion 14 as a rotation axis to open and close its upper opening. The metal connecting piece 23 corresponds circumferentially to the mounting hole 13.

[0041] The connecting piece 23 bends from the lower side of the cover sidewall 12 toward one side of the cover sidewall 12 in the inward direction and extends to the corresponding position of the mounting hole 13, and bends from one side of the mounting hole 13 in the inward direction to the other side of the mounting hole 13 in the inward direction to form a pivot cavity 231 that partially surrounds the pivot part.

[0042] refer to Figure 7 The metal base 20 includes a bottom ring 22 that can be fitted onto the metal can body and a top ring 21 that protrudes from the bottom ring 22. The bottom ring 22 and the top ring 21 are integrally connected and a stepped structure 24 is formed between the bottom ring 22 and the top ring 21. The radial direction of the top ring 21 is smaller than that of the bottom ring 22.

[0043] refer to Figure 1 and Figure 2 When the metal cover 10 is placed on the metal base 20, the side wall 12 of the cover is fitted over the top ring 21, and the bottom edge of the side wall 12 abuts against the stepped structure 24. The top of the cover 11 closes the opening of the top ring 21. The metal connecting piece 23 is connected to the upper side of the bottom ring 22, and the metal connecting piece 23 bends outward to the outside of the side wall 12 of the cover and extends to the corresponding position of the mounting hole 13, and bends from the outside of the mounting hole 13 to the inside of the mounting hole 13 to form a semi-enclosing pivot cavity 14.

[0044] Of course, in contrast, the metal connecting piece 23 can also be bent inward to the inside of the cover sidewall 12 and then extend to the corresponding position of the mounting hole 13. It can also be bent from the inside of the mounting hole 13 to the outside of the mounting hole 13 and then bend downward to the outside of the pivot part 14 to form a pivot cavity 231 that surrounds most of the area of ​​the pivot part 14.

[0045] Preferably, the end of the metal connecting piece 23 is bent upward or downward to prevent the sharp end from scratching the user.

[0046] refer to Figure 3 and Figure 6 The lower edge of the cover sidewall 12 is curled to form a first rolled edge 123. The lower hole wall of the mounting hole 13 is adjacent to or extends to the first rolled edge 123 so that the pivot portion 14 is formed on the first rolled edge 123 in a rolled edge shape. The first rolled edge 123 can be an inward rolled edge or an outward rolled edge. The first rolled edge 123 can be a cylindrical rolled edge or a flat rolled edge.

[0047] refer to Figure 3 and Figure 6 The lower edge of the sidewall of the metal base 20 is curled to form a second rolled edge 221, and the upper edge of the sidewall of the metal base 20 is curled to form a third rolled edge 211. The second rolled edge 221 can be an inward rolled edge or an outward rolled edge, and the third rolled edge 211 can also be an inward rolled edge or an outward rolled edge, depending on actual needs.

[0048] In this embodiment, there is one pivot portion 14, which is strip-shaped, and the metal connecting piece 23 matches the shape of the pivot portion 14 to partially surround the pivot portion 14. Of course, there can also be multiple pivot portions 14, in which case there are corresponding multiple metal connecting pieces 23, and the multiple pivot portions 13 and metal connecting pieces 23 are arranged adjacent to each other.

[0049] refer to Figure 7 The metal base 20 has a through-hole on its side wall, with a gap between the upper edge of the through-hole and the upper edge of the side wall of the metal base 20. The lower edge of the metal connecting piece 23 is integrally connected to the lower side wall of the through-hole. The metal connecting piece 23 is cut from the side wall of the metal base and rolled up. The lower side wall of the through-hole is located above the bottom ring 22. That is, a cutting piece is cut from the side wall of the metal base 20 at a position with a gap from its upper edge, the lower edge of the cutting piece is integrally connected to the side wall of the metal base, and the cutting piece is bent to form the metal connecting piece 23 and the pivot cavity 231.

[0050] Both the metal base 20 and the metal cover 10 are stamped iron parts. In this embodiment, the metal base 20 and the metal cover 10 are tinplate stamped parts. Of course, the metal base 20 and the metal cover 10 can be other stamped metal parts, not limited to tinplate, such as aluminum sheet stamped parts or stainless steel sheet stamped parts. The sidewall thickness of the metal base and the sidewall thickness of the metal cover are 0.15mm-0.3mm.

[0051] To increase the connection stability between the metal cover 10 and the metal base 20, the metal cover 10 has an inwardly protruding engagement protrusion on the side wall opposite to the mounting hole 13, and the metal base 20 is recessed inward at the position opposite to the engagement protrusion to form an engagement recess. When the metal cover 10 covers the metal base 20, the engagement protrusion and the engagement recess engage in a convex-concave-convex relationship.

[0052] To increase the engagement stability between the metal base 20 and the can body, the top ring 21 is divided into a stepped first ring and a second ring from top to bottom. The radial diameter of the first ring is smaller than that of the second ring. The second ring and the second ring form a downward stepped surface on their inner sidewalls. The sidewall of the second ring has several engaging protrusions 25 protruding inward. When the metal base 20 is fitted onto the can body, the upper edge of the can body abuts against the stepped surface, and the outer rolled edge of the upper edge of the can body engages with the engaging protrusions. The second rolled edge of the lower edge of the metal cap 10 is an inward rolled edge, and an inward-shrinking structure is formed near the upper edge of the can body. The second rolled edge engages with this inward-shrinking structure.

[0053] refer to Figure 2 and Figure 4 The card has a 25-degree protrusion that is shaped like an inverted triangle.

[0054] In this embodiment, the lower half of both the bottom ring 22 and the top ring 21 are fitted and engaged with the can body. In contrast, only the bottom ring 22 can be fitted and engaged with the can body.

[0055] refer to Figures 8 to 12The all-metal cover connection structure also includes a latching switch assembly 40. The metal base 20 has a through hole 41 and a latching hole 42 located above the through hole 41 and covered by the metal cover 10. The latching switch assembly 40 includes a latching body 43, elastic arms 44 that bend and extend laterally from the latching body 43, a spherical protrusion 45 formed on the latching body 43 and capable of fitting into the latching hole 42, and a latching body 43 with the elastic arms 44 bent laterally to both sides. A switch protrusion 46 on the body 43 can be inserted into the through hole 42. The ends of the two elastic arms 44 are fixed to the inner sidewall of the metal base 20 by rivets 47, and the spherical protrusion 45 extends through the engaging hole 42 to the outside of the sidewall of the metal base 20. The switch protrusion 46 extends through the through hole 41 to the outside of the sidewall of the metal base 20. Pressing the switch protrusion 46 can drive the spherical protrusion 45 to extend inward into the engaging hole 42. Releasing the switch protrusion 46 can drive the spherical protrusion 45 to extend outward from the engaging hole 42 under elastic action.

[0056] More preferably, the engaging switch assembly 40 also includes a switch button 48, which is fixedly mounted on the outside of the switch protrusion 46. The switch button 48 engages with the switch protrusion 46; alternatively, the switch button 48 can be welded or riveted to the switch protrusion 46.

[0057] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A full metal cover connecting structure, comprising a metal base and a metal cover body, the metal cover body being pivotally connected to the metal base and being able to be flipped relative to the metal base to open or close an upper opening of the metal base, the metal base being able to be sleeved on a can body; characterized in that: the metal cover body is a one-piece structure, and a mounting hole is formed through a cover body sidewall of the metal cover body, a pivot portion being formed between the mounting hole and a bottom edge of the cover body sidewall; a metal connecting piece is connected to the cover body sidewall and cooperates with the pivot portion, the metal connecting piece being bent so that a terminal end thereof passes through the mounting hole to form a pivot cavity at least semi-surrounding the pivot portion, so that the pivot portion is pivotally connected in the pivot cavity and is limited from being separated from the metal base, and the metal cover body is flipped about the pivot portion as a pivot axis to open or close the upper opening. the connecting piece is bent from a lower side of the cover body sidewall to a side of the cover body sidewall in an inward or outward direction and then extends to a corresponding position of the mounting hole, and is bent from a side of the mounting hole in the inward or outward direction to another side of the mounting hole in the inward or outward direction to form the pivot cavity semi-surrounding the pivot portion.

2. The all-metallic lid connection structure of claim 1, wherein:

3. The full metal cover connecting structure according to claim 1, characterized in that: the metal cover body comprises a cover top and a cover body sidewall connected in one piece; the metal base comprises a bottom ring and a top ring protruding from the bottom ring, the bottom ring and the top ring being connected in one piece and forming a stepped structure therebetween, a lower edge of the metal connecting piece extending to the bottom ring; when the metal cover body is sleeved on the metal base, the cover body sidewall is sleeved outside the top ring and the bottom edge of the cover body sidewall abuts against the stepped structure, and the cover top closes an opening of the top ring; the metal connecting piece is bent outwardly to outside the pivot portion, then passes around the pivot portion from outside the pivot portion to inside the mounting hole to form the pivot cavity semi-surrounding the pivot portion. a lower edge of the cover body sidewall is crimped to form a first crimped edge, so that the pivot portion comprises the crimped edge.

4. The all-metallic lid connection structure of claim 1, wherein: a lower hole wall of the mounting hole is adjacent to or extends to the first crimped edge, so that the pivot portion is in the form of a crimped edge.

5. The all-metallic lid connection structure of claim 4, wherein: a cross section of the first crimped edge is in the form of a circular ring or an elliptical ring, so that the pivot portion is in the form of a circular ring or an elliptical ring.

6. The all-metallic lid connection structure of claim 4, wherein: a terminal end of the metal connecting piece is bent upwardly or downwardly after passing through the mounting hole.

7. The all-metallic lid connection structure of claim 1, wherein: a side wall of the metal base has a through hole at a position having a spacing from an upper edge, and a lower edge of the metal connecting piece is connected to a lower side wall of the through hole in one piece; 8. The all-metallic lid connection structure of claim 1, wherein: a lower edge of the side wall of the metal base is crimped to form a second crimped edge, and an upper edge of the side wall of the metal base is crimped to form a third crimped edge, the metal base and the metal cover both being thin metal sheet stamping parts, and the side wall of the metal base and the cover body sidewall of the metal cover body both having a thickness of 0.15-0.3 mm. ​ 9. The all-metallic lid connection structure of claim 1, wherein: The metal base is provided with a through hole and a clamping hole above the through hole, which is covered by the metal cover. The clamping switch assembly includes a clamping body, elastic arms extending from the clamping body to the lateral sides, a spherical protrusion formed on the clamping body and capable of extending into the clamping hole, and a switch protrusion formed on the clamping body and capable of extending into the through hole. The ends of the two elastic arms are fixed to the inner side wall of the metal base by rivets, and the spherical protrusion extends out of the side wall of the metal base through the clamping hole. The switch protrusion extends out of the side wall of the metal base through the through hole. Pressing or releasing the switch protrusion can drive the spherical protrusion to extend into or out of the clamping hole under the elastic action.

10. An all-metallic can characterized by: The metal cover includes a full-metal cover connecting structure for a metal can as claimed in any one of claims 1-9, and the metal base is sleeved on the metal can body and clamped with the metal can body.

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