Tank cover
By incorporating a central axis, ring wall, shoulder ring, and sliding part into the can lid design, the problem of the can lid falling off when misaligned is solved, thus improving the strength of the can lid and the stability of the packaging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-03-10
AI Technical Summary
The existing can lids are prone to falling off when adjacent cans are misaligned, and the lack of structural strength leads to deformation, affecting packaging stability.
A can lid is designed with a central axis extending in the vertical direction, annular walls, shoulder rings and a lid plate. The annular walls have protruding buckles on the inner and outer sides, and the shoulder rings have a sliding part and a sliding surface. The sliding surface is designed to reduce deformation and prevent detachment when misaligned.
The strength of the can lid has been improved, preventing it from falling off during the misalignment recovery process and ensuring stability during packaging.
Smart Images
Figure CN223982883U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to accessories for cans; in particular, it relates to a can lid. Background Technology
[0002] Please refer to Figure 8 and Figure 9 As shown, the existing can A1 is equipped with a lid A2. The lid A2 is a two-tiered lid that is narrower at the top and wider at the bottom, with the space inside the lid A2 large enough to accommodate a folding spoon. However, this lid A2 lacks a structure to enhance its strength and is prone to deformation under stress. When packaging multiple cans A1 with lids A2, they are usually wrapped with shrink film, in which case the multiple cans A1 are arranged in pairs adjacent to each other.
[0003] When two adjacent cans A1 with lids A2 are misaligned, the upper edge of one lid A2 can easily hook onto the lower edge of the other lid A2. As the two adjacent cans A1 and their lids A2 return to their original positions, the lid A2 of one can A1 will lift one side of the lid A2 of the other can A1, causing the lids A2 on the multiple cans A1 to easily fall off. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a can lid that, by providing a sliding part and a sliding surface around the can lid, not only improves the strength of the can lid, but also avoids the problem that when the can lids installed on two adjacent cans are misaligned and then return to their original positions, one can lid is easily lifted by the other can lid and falls off the can.
[0005] To achieve the above objectives, this utility model provides a can lid having a central axis extending in a vertical direction, and including an annular wall, a shoulder ring, and a cover plate. The annular wall is a circular ring concentric with the central axis, and its inner and outer sides each have an inner circumferential surface and an outer circumferential surface, respectively. A protruding buckle is formed at the lower edge of the inner circumferential surface. The shoulder ring is a circular ring concentric with the central axis and connected to the upper edge of the annular wall; the inner side of the shoulder ring has a transverse annular surface and a longitudinal annular surface; the inner circumferential edge of the transverse annular surface is connected to the lower edge of the longitudinal annular surface; the outer circumferential edge of the transverse annular surface is connected to the upper edge of the inner circumferential surface of the annular wall; the portion of the shoulder ring above the transverse annular surface forms a slip portion, which has a slip surface. The lower edge of the slip surface is connected to the upper edge of the outer circumferential surface of the annular wall, and the portion of the slip surface closer to the transverse annular surface is further away from the longitudinal annular surface. The outer periphery of the cover plate is connected to the upper edge of the longitudinal annular surface.
[0006] The advantage of this invention is that by forming a sliding part on the upper part of the transverse annular surface, the strength of the can lid can be improved, making it less prone to deformation when subjected to external forces. Furthermore, by setting the sliding surface so that the portion closer to the transverse annular surface is further away from the longitudinal annular surface, when two adjacent cans fitted with the lids of this invention are misaligned, even if the shoulder ring of one can lid is fastened to the lower edge of the annular wall of the other can lid, because the sliding surface contacts the lower edge of the annular wall of the other can lid, during the process of the two adjacent cans returning from a misaligned state to a parallel state, the shoulder ring of the can lid will slide off the lower edge of the annular wall of the other can lid, preventing one side of the other can lid from being lifted. This avoids the can lids of multiple cans wrapped in shrink film from falling off the cans during movement. Attached Figure Description
[0007] Figure 1 This is a perspective view of the first preferred embodiment of the present invention.
[0008] Figure 2 for Figure 1 Top view.
[0009] Figure 3 for Figure 2 A cross-sectional view along the 3-3 direction.
[0010] Figure 4 for Figure 1 A bottom view.
[0011] Figure 5 This is a schematic diagram showing two adjacent cans with the lid of this utility model installed in a staggered manner.
[0012] Figure 5A for Figure 5 Enlarged view of the area marked 5A.
[0013] Figure 5B for Figure 5A A diagram illustrating the action of the can lid slipping off.
[0014] Figure 6 This is a perspective cross-sectional view of the second preferred embodiment of the present invention.
[0015] Figure 7 for Figure 6 Cross-sectional view.
[0016] Figure 8 This is a schematic diagram of two adjacent tanks, each with a lid, that are staggered vertically.
[0017] Figure 9 This is a diagram illustrating how the lid of an existing tank is lifted by the lid of another tank.
[0018] Explanation of reference numerals in the attached figures:
[0019] 100: Can lid
[0020] 100A: Can lid
[0021] 10: Circumferential wall
[0022] 10A: Circumferential wall
[0023] 12: Inner circumferential surface of the ring wall
[0024] 14: Outer circumferential surface of the ring wall
[0025] 16: Protruding buckle part
[0026] 20: Shoulder ring
[0027] 20A: Shoulder ring
[0028] 22: Transverse annular surface
[0029] 24: Longitudinal annular surface
[0030] 26: Slippage
[0031] 26A: Slippage
[0032] 261: Slippage
[0033] 261A: Slip surface
[0034] 28: Outer perimeter of the shoulder ring
[0035] 30: Cover plate
[0036] 30A: Cover plate
[0037] 32: Spoon-shaped buckle protrusion set
[0038] A: Tank
[0039] A1: Tank
[0040] A2: Can lid
[0041] H1: Length
[0042] H2: Length
[0043] L: Central axis
[0044] S1: First Refrigeration Chamber
[0045] S2: Second Chamber Detailed Implementation
[0046] To more clearly illustrate this utility model, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figures 1 to 4As shown, this is a preferred embodiment of the can lid 100 of the present invention. The can lid 100 is formed by injection molding of plastic using a mold, and the can lid 100 has a central axis L extending in the vertical direction. The can lid 100 includes an annular wall 10, a shoulder ring 20, and a cover plate 30, wherein:
[0047] The ring wall 10 is a circular ring concentric with the central axis L. The inner and outer sides of the ring wall 10 have an inner circumferential surface 12 and an outer circumferential surface 14, respectively. A protruding buckle 16 is formed at the lower edge of the inner circumferential surface 12.
[0048] The shoulder ring 20 is a circular ring concentric with the central axis L. The shoulder ring 20 is connected to the upper edge of the ring wall 10, and its outer diameter is equal to that of the ring wall 10. The inner side of the shoulder ring 20 has a transverse annular surface 22 and a longitudinal annular surface 24. The transverse annular surface 22 is perpendicular to the central axis L, and the longitudinal annular surface 24 is parallel to the central axis. The transverse annular surface 22 and the longitudinal annular surface 24 are perpendicularly connected. Specifically, the outer periphery of the transverse annular surface 22 is connected to the upper edge of the inner circumferential surface 12 of the ring wall, and the inner edge of the transverse annular surface 22 is connected to the lower edge of the longitudinal annular surface 24.
[0049] The shoulder ring 20, located above the transverse annular surface 22, forms a slip portion 26. The surface of the slip portion 26 has a slip surface 261. In this preferred embodiment, the slip surface 261 is an annular inclined surface, and its lower edge connects to the upper edge of the outer peripheral surface 14 of the ring wall. The closer the slip surface 261 is to the transverse annular surface 22 along the central axis L, the further it is from the longitudinal annular surface 24 along the direction perpendicular to the central axis L. The outer side of the shoulder ring 20 also has an outer peripheral surface 28, the lower edge of which connects to the upper edge of the slip surface 261. The length H1 between the outer peripheral surface 28 and the longitudinal annular surface 24 along the direction perpendicular to the central axis L is equal to the length H2 between the outer peripheral surface 14 and the inner peripheral surface 12 of the ring wall along the direction perpendicular to the central axis L.
[0050] The cover plate 30 is a circular plate concentric with the central axis L. The outer periphery of the cover plate 30 is connected to the upper edge of the longitudinal annular surface 24 of the shoulder ring 20. The space inside the lid 100 surrounded by the annular wall 10 forms a first chamber S1, and the space inside the lid 100 surrounded by the shoulder ring 20 forms a second chamber S2. The volume of the second chamber S2 is smaller than the volume of the first chamber S1, and the second chamber S2 communicates with the first chamber S1. A spoon-locking protrusion assembly 32 is connected to the inner surface of the cover plate 30 and the longitudinal annular surface 24, protruding towards the second chamber S2. The spoon-locking protrusion assembly 32 is used to fix a folding spoon inside the lid 100.
[0051] In the first preferred embodiment of the present invention, the can lid 100 increases the thickness of the shoulder ring 20 by forming the slip portion 26 on the portion of the shoulder ring 20 located above the transverse annular surface 22, thereby increasing the strength of the can lid 100 and making it less prone to bending or warping when subjected to external forces.
[0052] When the can lid 100 of the first preferred embodiment of this utility model is used, such as Figure 5 , Figure 5A and Figure 5B As shown, the can lid 100 is installed on a can body A. Usually, multiple can bodies A with the can lid 100 are wrapped in shrink film. At this time, the multiple can bodies A are in a state of being adjacent to each other. During the transportation of the multiple can bodies A wrapped in shrink film, the two adjacent can bodies A may be slightly misaligned due to the movement of some of the can bodies A. This state will return to its original position after the multiple can bodies A are laid flat.
[0053] This invention, through the design of the shoulder ring 20 having the slip portion 26 and its slip surface 261, ensures that when two adjacent cans A are misaligned, even if the upper edge of one can lid 100, i.e., the slip surface 261 of the shoulder ring 20, is fastened to the lower edge of the annular wall 10 of the other can lid 100, during the process of the two adjacent cans A returning to their original positions, the design of the slip surface 261 of the shoulder ring 20 being able to slip off from the lower edge of the annular wall 10 of the other can lid 100 can prevent the can lid 100 of can A from lifting one side of the other can lid 100. This makes it less likely for the can lid 100 of each can A to fall off from the can A during the movement of multiple cans A with shrink film packaging and each having the can lid 100.
[0054] In addition to the first preferred embodiment described above, where the slip surface 261 of the slip portion 26 is set as an annular inclined surface, in other preferred embodiments of this invention, the slip surface 261 can also be set as other annular shapes, conforming to the shape that the closer the slip surface 261 is to the transverse annular surface 22, the further away it is from the longitudinal annular surface 24. For example... Figure 6 and Figure 7 The second preferred embodiment of the present invention shown includes a can lid 100A comprising an annular wall 10A, a shoulder ring 20A, and a cover plate 30A. The difference between the can lid 100A and the can lid of the first preferred embodiment is that the shoulder ring 20A has a sliding portion 26A, the surface of which has a sliding surface 261A, which is an annular convex arc surface. In other preferred embodiments, the sliding surface 261A may also be other types of annular arc surfaces, such as an annular concave arc surface. The other structures and functions of the can lid 100A in the second preferred embodiment are the same as those in the first preferred embodiment.
[0055] The above description is only a preferred and feasible embodiment of the present utility model. Any equivalent changes made by applying the present utility model specification and claims should be included within the patent scope of the present utility model.
Claims
1. A can end characterized by, The lid has a central axis extending in the up-down direction, and comprises a ring wall, a shoulder ring, and a cover plate, wherein: The ring wall is a circular ring body concentric with the central axis, and the inner and outer sides of the ring wall respectively have a ring wall inner circumferential surface and a ring wall outer circumferential surface, and a protruding buckle portion is formed at the lower edge of the ring wall inner circumferential surface; The shoulder ring is a circular ring body concentric with the central axis and connected to the upper end edge of the ring wall, and the inner side of the shoulder ring has a transverse annular surface and a longitudinal annular surface; the inner circumferential edge of the transverse annular surface is connected to the lower edge of the longitudinal annular surface; the outer circumferential edge of the transverse annular surface is connected to the upper edge of the ring wall inner circumferential surface; the portion of the shoulder ring above the transverse annular surface forms a sliding-off portion, and the sliding-off portion has a sliding-off surface, the lower edge of the sliding-off surface is connected to the upper edge of the ring wall outer circumferential surface, and the portion of the sliding-off surface closer to the transverse annular surface is farther away from the longitudinal annular surface; The outer circumferential edge of the cover plate is connected to the upper edge of the longitudinal annular surface.
2. The can lid of claim 1, wherein The transverse annular surface is perpendicular to the central axis, and the longitudinal annular surface is parallel to the central axis.
3. The can lid of claim 1 wherein, The outer diameter length of the shoulder ring is equal to the outer diameter length of the ring wall.
4. The can lid of claim 3, wherein The outer side of the shoulder ring has a shoulder ring outer circumferential surface, and the lower edge of the shoulder ring outer circumferential surface is connected to the upper edge of the sliding-off surface.
5. The can lid of claim 4, wherein The length between the shoulder ring outer circumferential surface and the longitudinal annular surface in the direction perpendicular to the central axis is equal to the length between the ring wall outer circumferential surface and the ring wall inner circumferential surface in the direction perpendicular to the central axis.
6. The can lid of claim 1 wherein, The sliding-off surface is an annular inclined surface or an annular arc surface.
7. The can lid of claim 6, wherein The outer side of the shoulder ring has a shoulder ring outer circumferential surface, and the lower edge of the shoulder ring outer circumferential surface is connected to the upper edge of the sliding-off surface; the length between the shoulder ring outer circumferential surface and the longitudinal annular surface in the direction perpendicular to the central axis is equal to the length between the ring wall outer circumferential surface and the ring wall inner circumferential surface in the direction perpendicular to the central axis.
8. The can lid of claim 1 wherein, The space inside the lid surrounded by the ring wall forms a first container chamber, and the space inside the lid surrounded by the shoulder ring forms a second container chamber; the volume of the second container chamber is smaller than the volume of the first container chamber, and the second container chamber communicates with the first container chamber.
9. The can lid of claim 8, wherein A set of spoon buckle protrusions protruding from the inner surface of the cover plate and the longitudinal annular surface into the second container chamber.