Combined container cover

Abstract

A combined container cover comprises a central cover body, an outer cover body in the shape of a polygon with a positive even number, at least one first splicing part and at least one second splicing part, the first splicing part and the second splicing part are arranged on the horizontal edge of the side wall of the outer cover body, and a first middle inserting tenon is in the shape that the inner section expands outwards and the outer section is closed in the horizontal direction. An integrated continuous surface is formed between each of the first splicing part and the second splicing part and the side wall of the adjacent outer cover body, the first middle inserting tenon is a slotted hollow cylinder with a lower hole and an inner side cutting groove continuously extending to the top wall, and the first side inserting groove and the second middle inserting groove are both concave inwards to form arched walls. By reasonably arranging the structure of the first splicing part and the second splicing part, any two container covers can form an elastic deformation structure effectively coping with twisting force after being combined through the first splicing part and the second splicing part, the container covers are endowed with the assembling function similar to building blocks, the assembling structure is stable, and good twisting resistance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging containers, and more specifically to a combined container cover capable of playing a splicing game. Background Art

[0002] Instant liquid fast-moving consumer goods such as beverages and jellies are usually packaged in portable packaging containers made of plastic. Based on the concept of environmental protection, the container lids of such containers are modified to give them an assembly function similar to building blocks to avoid the container lids being discarded at will. While reducing damage to the environment, the fun of such packaged products has increased consumers' willingness to consume and further enhanced the added value of the products.

[0003] For example, there is a type of container cover currently on the market, also known as a magic cover, which includes a first support seat and a second support seat connected to the outer side of the cover, and a first plug-in piece fixed to the first support seat and a second plug-in piece fixed to the second support seat. By plugging the first plug-in piece and the second plug-in piece together, the cover is given an assembly function similar to that of building blocks, and can be assembled into various shapes, which is in line with the current environmental protection concept.

[0004] However, in consideration of the functions of both bottle caps and building blocks, and for the convenience of production, the plug-in structure of this type of magic cap is mostly fixed on the first support seat or the second support seat in an external manner, forming an integral rigid structure as a whole. For young children, when they play with the magic cap by assembling and disassembling it, they may not follow the reasonable playing method to disassemble and assemble it, especially deliberately twisting and disassembling the building blocks in the assembled state; and the existing magic cap, because its plug-in structure is an integral rigid structure, may be damaged by the twisting of young children in the assembled state, resulting in the first and second plug-in parts and the first and second support seats The rigid junction or the sharp edge part is broken or damaged due to the twisting force, thereby losing the assembly function; in addition, based on cost considerations, the plastic material used to manufacture the bottle cap also has the defect of insufficient toughness and elasticity, and its strength to resist external forces to maintain the basic structure is relatively weak, which poses certain safety hazards. Summary of the invention

[0005] The utility model aims to provide a combined container cover, which reasonably arranges the structure of the first splicing part and the second splicing part so that any two container covers can form an elastic deformation structure that effectively copes with twisting and torsion force after being combined through the first splicing part and the second splicing part. In addition to giving the container cover an assembly function similar to that of building blocks, the assembly structure is stable and has good anti-twisting and torsion performance.

[0006] In order to achieve the above purpose, the utility model adopts the following technical means to implement:

[0007] A combined container lid, comprising a central lid body, an outer lid body in the shape of a regular even polygon, at least one first splicing part and at least one second splicing part arranged on the horizontal sides of the side wall of the outer lid body. The first splicing part consists of a first middle tenon and first side slots arranged on both sides of the first middle tenon. The second splicing part consists of a second middle slot and second side tenons arranged on both sides of the second middle slot. Any two container lids are slidably spliced with each other through the first middle tenon and the second middle slot, and the two second side tenons and the two first side slots are slidably spliced with each other. The first middle tenon is in a shape of an inner section expanding outward and an outer section converging inward in the horizontal direction. The first splicing part and the second splicing part respectively form an integral continuous surface with the adjacent side wall of the outer lid body. The first middle tenon is a slotted hollow cylinder with a lower hole and an inner cut groove continuously extending to the top wall. The first side slot and the second middle slot are both recessed inward to form an arched wall.

[0008] Further, the second side tenons are arranged on both sides of the arched wall. The second middle slot is formed by enclosing the opposite side walls of the two second side tenons and the outer wall of the arched wall. The second side tenons are in a shape of an inner section expanding outward and an outer section converging inward in the horizontal direction.

[0009] Further, the outer section of the first middle tenon protrudes from the surface of the adjacent side wall of the outer lid body of the first splicing part. The whole of the second side tenons protrudes from the surface of the adjacent side wall of the outer lid body of the second splicing part. The side wall of the outer lid body is recessed inward to form the first side slot and the second middle slot.

[0010] Further, the side wall of the first middle tenon is a columnar tenon in the shape of a 270° - 300° superior arc wall. The inner section of the side wall of the second middle slot is recessed into the surface of the adjacent side wall of the outer lid body of the second splicing part and forms an inferior arc surface inner wall with an angle of 60° - 75°.

[0011] Further, the width of the inner cut groove is 0.25 - 0.5 times the thickness of the side wall of the outer lid body and 0.25 - 0.5 times the diameter of the hollow cylinder part.

[0012] Further, the second side tenons are dovetail tenons and the first side slots are dovetail grooves.

[0013] Further, the second side tenons are rounded surface dovetail tenons and the first side slots are rounded surface dovetail grooves. There is a gap between the rounded surface outer wall of the first side slot and the rounded surface outer wall of the second side tenon. The flat outer walls of the first side slot and the second side tenon are mutually attached.

[0014] Further, the central lid body and the inner wall of the outer lid body are connected by at least two connecting walls.

[0015] Further, a lower insertion post, a lower insertion hole, and an upper insertion hole are also provided. The lower insertion posts and the lower insertion holes are circumferentially arrayed at intervals along the lower edge of the connecting wall, and the upper insertion holes are circumferentially arrayed on the upper wall of the outer cover.

[0016] Further, the central cover is provided with a rotary thread. A theft-proof ring connected to the connecting wall is provided at the lower edge of the central cover. At least one vertical incision is provided in the vertical direction of the theft-proof ring. At least one inwardly protruding hook portion is provided on the inner wall, and at least one inwardly concave horizontal recess is provided on the outer wall. The vertical incision, the hook portion, and the horizontal recess are circumferentially arranged adjacent to each other between two adjacent connecting walls and are arranged in the reverse direction with respect to the rotary thread.

[0017] The utility model has at least the following advantages:

[0018] By reasonably setting the structures of the first splicing portion and the second splicing portion, after any two container lids are combined through the first splicing portion and the second splicing portion, an elastic deformation structure formed by the first side slot, the arched wall formed by the inward concavity of the second middle slot, and the slotted hollow cylinder formed by the continuous extension of the first middle tenon to the top wall can enable the two container lids in the first combined state to maintain a stable combined stability. When the two container lids in the first combined state are subjected to excessive screwing torque, the first splicing portion and the second splicing portion can be disengaged from the splicing state through the elastic deformation of the above elastic deformation structure, thereby effectively avoiding the occurrence of accidental damage to the container lid caused by the misoperation of young children.

[0019] 2. By reasonably setting the shape structures of the first middle tenon and the second middle slot, the combined stability and the strength of the anti-screwing torque between the first splicing portion and the second splicing portion can be adjusted according to preset requirements. Additionally, by reasonably setting the rounded surface, the hand feeling of the user holding and rotating the container lid can be improved, and the discomfort caused by sharp parts can be avoided.

[0020] 3. Through the arrangement that the vertical incision, the hook portion, and the horizontal recess are circumferentially arranged adjacent to each other between two adjacent connecting walls and are arranged in the reverse direction with respect to the rotary thread, the anti-theft ring section in the area of the vertical incision, the hook portion, and the horizontal recess can be bent outward along the horizontal recess, thereby avoiding the anti-theft ring from being cut in a way that does not break along the vertical incision as preset. Description of the Drawings

[0021] Figure 1 is a schematic diagram of Embodiment 1 of the utility model;

[0022] Figure 2 is a top view schematic diagram of Embodiment 1 of the utility model;

[0023] Figure 3 is an oblique upward view schematic diagram of Embodiment 1 of the utility model;

[0024] Figure 4 is the bottom view schematic diagram of the first combined state of Embodiment 1 of the present utility model;

[0025] Figure 5 is Figure 4 the enlarged schematic diagram of area A of ;

[0026] Figure 6 is Figure 4 the enlarged schematic diagram of area B of ;

[0027] Figure 7 is Figure 4 the enlarged schematic diagram of area C of ;

[0028] Figure 8 the twisting schematic diagram of the first combined state of Embodiment 1 of the present utility model;

[0029] Figure 9 is the process schematic diagram of the second combined state of Embodiment 1 of the present utility model;

[0030] Figure 10 is the bottom view schematic diagram of the first combined state of Embodiment 2 of the present utility model;

[0031] Figure 11 is Figure 10 the enlarged schematic diagram of area D of ;

[0032] Figure 12 is the schematic diagram of Embodiment 3 of the present utility model. Detailed implementation manners Embodiment 1

[0033] As Figures 1-9 shown, a combined container lid includes a central lid body 51 and an outer lid body 52 in the shape of a regular hexagon with rounded corners. Three first splicing parts 10 and three second splicing parts 20 are circumferentially arrayed at intervals on the horizontal sides of the side wall 521 of the outer lid body. The first splicing part 10 is composed of a first middle tenon 11 and first side slots 12 arranged on both sides of the first middle tenon 11. The second splicing part 20 is composed of a second middle slot 21 and second side tenons 22 arranged on both sides of the second middle slot 21. An integral continuous surface is formed between each of the first splicing part 10 and the second splicing part 20 and the adjacent side wall 521 of the outer lid body. Any two container lids are slidably spliced with each other through the first middle tenon 11 and the second middle slot 21, and the two second side tenons 22 and the two first side slots 12 are slidably spliced with each other. The first middle tenon 11 and the second middle slot 21, and the two second side tenons 22 and the two first side slots 12 are paired and fitted with each other in the horizontal direction, so that the first splicing part 10 and the second splicing part 20 can only slide relative to each other in the vertical direction, where:

[0034] The first middle tenon 11 is a columnar tenon, which is in the shape of a major arc with an angle α of 270° in the horizontal plane direction. With the geometric center of the cover body as the inner side in the horizontal plane direction, the vertical cross-section of the outermost connection line h of the left and right ends of the columnar tenon is the junction of the inner section m and the outer section n. The inner section m of the side wall of the first middle tenon 11 is overall expanded outward from the center line i to both left and right sides, and the outer section n is overall converged from both left and right sides to the center line; the first middle tenon 11 is a slotted hollow cylinder 110 with a lower hole 1101 and an inner cut groove 1102 continuously extending to the top wall. The first side slot 12 and the second middle slot 21 are both recessed inward to form an arched wall; correspondingly, the second middle slot 21 is a groove wall paired with the first middle tenon 11, which is in the shape of a major arc with an angle α' of 270° in the horizontal plane direction. With the geometric center of the cover body as the inner side in the horizontal plane direction, the vertical cross-section of the outermost connection line h' of the left and right ends of the groove wall is the junction of the inner section p and the outer section q. The inner section p of the side wall of the second middle slot 21 is overall expanded outward from the center line i' to both left and right sides, and the outer section q is overall converged from both left and right sides to the center line i'. And the second middle slot 21 is recessed into the surface of the adjacent outer cover body side wall 521 of the second splicing part 20 and forms an inner wall of a minor arc surface with an angle β of 66°. Through this setting, when two container covers are combined into the first combined state as Figure 4 like this, the first middle tenon 11 and the second middle slot 21 have a large contact area, which can bring a good fitting effect; and when receiving a torsional force from the horizontal direction or like Figure 6 the torsional direction like this, under the action of the outward expansion force, the first middle tenon 11 and the second middle slot 21, due to the setting that the inner section m of the first side slot 12 and the second middle slot 21 are both recessed inward to form an arched wall, and the setting that the first middle tenon 11 is a slotted hollow cylinder 110 with a lower hole 1101 and an inner cut groove 1102 continuously extending to the top wall, while the first middle tenon 11 and the second middle slot 21 deform relative to their respective adjacent outer cover body side walls 521, the first middle tenon 11 can also contract along the slotted hollow cylinder 110 part, and an elastic deformation structure is formed between the first splicing part 10 and the second splicing part 20. Based on the plastic outer cover body 52, it can have a higher anti-torsion strength due to the above elastic deformation structure.

[0035] Further, the width of the inner cut groove 1102 is set to be 0.25 - 0.5 times the thickness of the outer cover body side wall 521 and 0.25 - 0.5 times the diameter of the hollow cylinder part. Through this size ratio, when the outer cover body 52 receives a separating force from the horizontal direction or like Figure 6When applying a torsional force in a general twisting direction, a reasonable shrinking space is provided for the slotted hollow cylinder 110, so that the outer cover body 52 has higher anti-twisting strength, and further improves the wall structure strength of the intersection part between the outer side wall 521 of the outer cover body, the inner cut groove 1102, and the lower hole 1101. At the same time, the demolding is simple after injection molding, and the plastic adhesion of the inner cut groove 1102 is not likely to occur.

[0036] Furthermore, the second side tenon 22 is arranged on both sides of the arched wall. The second middle slot 21 is formed by enclosing between the opposite side walls of the two second side tenons 22 and the outer wall of the arched wall. Through this setting, it can make the second side tenon 22 and the second middle slot 21 enclose a more intensive shape, avoiding the unnecessary occupation of too much space on the outer side wall 521 of the outer cover body. Thus, within the same width range of the outer side wall 521 of the outer cover body, the sizes of the second side tenon 22 and the second middle slot 21 can be enlarged as much as possible. Similarly, the second side tenon 22 is arranged with an outward-expanded inner section j and a converged outer section k in the horizontal direction, which can also more effectively improve the fastening reliability between the second side tenon 22 and the first side slot 12.

[0037] Furthermore, the outer section n of the first middle tenon 11 protrudes from the surface of the adjacent outer side wall 521 of the outer cover body of the first splicing part 10, and the whole of the second side tenon 22 protrudes from the surface of the adjacent outer side wall 521 of the outer cover body of the second splicing part 20. The first side slot 12 and the second middle slot 21 are formed by the inward depression of the outer side wall 521 of the outer cover body. By reasonably setting the position distribution between the inner section m and the outer section n of the first middle tenon 11 and the adjacent outer side wall 521 of the outer cover body of the first splicing part 10, and the position distribution of the second side tenon 22 and the adjacent outer side wall 521 of the outer cover body of the second splicing part 20, the protruding amplitudes of the first middle tenon 11 and the second side tenon 22 on the outer side wall 521 of the outer cover body can be relatively close as a whole, avoiding affecting the holding feel when holding the outer cover body 52 and rotating the container lid. Combined with the anti-slip patterns provided on the outer side wall 521 of the outer cover body, it can be more convenient for screwing the container lid.

[0038] Furthermore, the second side tenon 22 is a dovetail tenon, and the first side slot is a dovetail groove. Adopting the dovetail tenon-dovetail groove fixing structure can further improve the splicing effect of the first splicing part 10 and the second splicing part 20;

[0039] Even further, the second side tenon 22 is set as a rounded surface dovetail tenon, and the first side slot 12 is set as a rounded surface dovetail groove, which can avoid scratching the relatively tender hand skin of young children by the edges of the relatively sharp dovetail tenon and dovetail groove during the process of holding the container lid and unscrewing it.

[0040] Further, the central cover body 51 is integrally connected to the inner wall of the outer cover body 52 at six corner parts through connecting walls. Among them, three long connecting walls 41 extend from the upper part of the container cover to the lower part of the container cover and are integrally fixed to the main body of the central cover body 51 and the anti-theft ring 510 on the inner side. An upper insertion hole 31 is provided on the upper wall 522 of the outer cover body above each long connecting wall 41, and a lower insertion post is provided at the lower end of each long connecting wall 41; three short connecting walls 42 are integrally fixed to the lower part of the main body of the central cover body 51 and the anti-theft ring 510. An upper insertion hole 31 is provided on the upper wall 522 of the outer cover body above each short connecting wall 42, and a lower insertion post is provided at the lower end of each short connecting wall 42. That is, three lower insertion posts and three lower insertion holes 32 are circumferentially arranged in an alternating and staggered manner along the lower edge of the connecting wall, and six upper insertion holes 31 are circumferentially arranged on the upper wall 522 of the outer cover body.

[0041] By reasonably setting the connecting wall as the connecting component between the central cover body 51 and the outer cover body 52, it can save materials while improving the overall structural stability between the central cover body 51 and the outer cover body 52; at the same time, through the design of the upper insertion hole 31 and the lower insertion post 33, any two container covers can be combined up and down to form a stacked structure, that is, Figure 7 like the second combined state shown in the figure. And based on the setting scheme of this embodiment, two container covers are spliced along the first splicing part 10 and the second splicing part 20 to form a combined part in the first combined state, and then two sets of combined parts are stacked and spliced up and down along the upper insertion holes and the lower insertion posts to form a combined structure; of course, a certain set of combined parts can also be laterally shifted so that the upper combined part and the lower combined part are spliced at an angle to each other, and a fixed splicing can also be formed. Based on the reasonable selection of the above splicing methods, with a sufficient number of container covers, different three-dimensional shapes with ingenuity can be spliced.

[0042] Further, the central cover body 51 is provided with a rotary thread. The lower edge of the central cover body 51 is provided with an anti-theft ring 510 connected to the connecting wall. The anti-theft ring 510 is provided with at least one vertical cut 511 in the vertical direction, at least one inwardly protruding hook part 512 is provided on the inner wall, and at least one inwardly concave horizontal concave position 513 is provided on the outer wall. The vertical cut 511, the hook part 512, and the horizontal concave position 513 are circumferentially arranged adjacent to each other between two adjacent connecting walls and are arranged in the reverse direction with respect to the rotary thread.

[0043] By setting the rotating thread and the anti-theft ring 510, when the container cover is rotated to open relative to the container mouth, the hook portion 512 of the anti-theft ring 510 can be hooked to the corresponding buckle position of the container mouth, so that the anti-theft ring 510 is cut along the relatively weak vertical cut 511 position, and because the vertical cut 511, the hook portion 512, and the horizontal concave position 513 are arranged in sequence between two adjacent connecting walls in the circumferential direction and arranged in the opposite direction relative to the rotating thread in this embodiment. Through this arrangement, when the user unscrews the container cover along the rotating thread and the vertical cut 511 is not completely cut off to completely cut off, the anti-theft ring 510 section below the vertical cut 511 is stretched and extended due to the corresponding buckling rotation of the hook portion 512 and the hooked container mouth, and the anti-theft ring 510 section in the vertical cut 511, the hook portion 512, and the horizontal concave position 513 area will expand outward. By reasonably setting the horizontal recess 513, the anti-theft ring 510 section in the vertical incision 511, the hook 512 and the horizontal recess 513 area can be bent outward along the horizontal recess 513, thereby further preventing the anti-theft ring 510 from being cut in a preset manner along the vertical incision 511. Example 2

[0044] like Figures 10-11 As shown, this embodiment is based on the setting scheme of the second side tenon 22 of embodiment 1 as a rounded dovetail tenon and the first side slot 12 as a rounded dovetail groove. On this basis, a gap 100 is set between the rounded outer wall of the first side slot 12' and the opposite surface of the rounded outer wall of the second side tenon 22', and the plane outer wall of the first side slot 12' and the plane outer wall of the second side tenon 22' fit each other; preferably, in this embodiment, the groove wall of the second middle slot 21' is at an angle γ of 258° in the horizontal direction. The main arc shape is that the geometric center of the cover body is the inner side in the horizontal plane direction, and the inner section p' of the side wall of the second middle slot 21' expands outward from the center line to the left and right sides as a whole, and the outer section q' converges from the left and right sides to the center line as a whole. Since the main arc angle γ of the second middle slot 21' is 258°, which is smaller than the main arc angle 270° of the first middle tenon 11', a gap is formed between the first middle tenon 11' and the second middle slot 21' after they are combined, and the widest point X of the gap 100 on the horizontal plane is not greater than 0.5mm.

[0045] Compared with the solution in which the planar outer wall of the first side slot 12 and the planar outer wall and the rounded outer wall of the second side tenon 22 are in contact with each other in embodiment 1, it can avoid the problem of Figure 6 In the case of excessive twisting, the two combined container lids are difficult to slip off because the first joint portion 10 and the second joint portion 20 remain in a buckled state, resulting in excessive twisting force and breakage. This shape is more suitable for use when the outer cover 52 is relatively thin, and can better avoid accidental damage to the container lid caused by misoperation by young children. Embodiment 3

[0046] As Figure 12 shown, based on the setting solution of Embodiment 1, this embodiment adjusts the shapes of the first middle tenon 11 and the second middle slot 21. In this embodiment, the side wall of the first middle tenon 11'' is a columnar tenon in the shape of a convex frustum with an inner section m'' expanding outward and an outer section n'' converging in the horizontal direction, and the side wall of the second middle slot 21'' is a groove wall with an inner section p'' expanding outward and an outer section q'' converging in the horizontal direction and matching the outer contour of the columnar tenon.

[0047] Compared with the solution in Embodiment 1 where the side wall of the first middle tenon 11 is a columnar tenon in the shape of a 270° superior arc with an inner section m expanding outward and an outer section n converging in the horizontal direction, and the side wall of the second middle slot 21 is a groove wall in the shape of a 270° superior arc with an inner section p expanding outward and an outer section q converging in the horizontal direction, the length of the first middle tenon 11'' of this embodiment in the horizontal direction is longer than that of the first middle tenon 11 in Embodiment 1, and the depth of the second middle slot 21'' in the horizontal direction is deeper than that of the second middle slot 21 in Embodiment 1. Therefore, when there is a situation of excessive twisting as Figure 6 shown, the first middle tenon 11'' of the container lid in the combined state of this embodiment is more likely to relatively contract along the slotted hollow cylinder 110'', so that the two container lids in the combined state are more likely to be separated from each other; and in a non-twisting state other than as Figure 6 shown, the longer and deeper first middle tenon 11'' and second middle slot 21'' have a larger range of combined parts, and their fixing effect is more reliable.

[0048] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change; Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other; Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A combined container cover, comprising a central cover body, an outer cover body in the form of a regular even polygon, at least one first joint and at least one second joint provided on the horizontal side of the side wall of the outer cover body, wherein the first joint is composed of a first middle tenon and first side slots provided on both sides of the first middle tenon, and the second joint is composed of a second middle slot and second side tenons provided on both sides of the second middle slot; any two container covers are slidably joined together via the first middle tenon and the second middle slot, and the two second side tenons and the two first side slots are slidably joined together, characterized in that: The first central tenon is in a horizontal direction with the inner section expanding outward and the outer section contracting, the first splicing portion and the second splicing portion each form an integral continuous surface with the adjacent outer cover side walls, the first central tenon is a slotted hollow cylinder with a lower hole and an inner groove extending continuously to the top wall, and the first side slot and the second central slot are both concave inward to form an arched wall.

2. The combined container cover according to claim 1, characterized in that: The second side tenons are arranged on both sides of the arched wall, and the second middle slot is formed between the two facing side walls of the second side tenons and the outer wall of the arched wall. The second side tenons are in a shape of outward expansion at the inner section and contraction at the outer section in the horizontal direction.

3. The combined container cover according to claim 2, characterized in that: The outer section of the first middle tenon protrudes from the adjacent outer cover side wall surface of the first splicing part, and the second side tenon protrudes as a whole from the adjacent outer cover side wall surface of the second splicing part, and the outer cover side wall is recessed inward to form the first side slot and the second middle slot.

4. The combined container cover according to claim 3, characterized in that: The first central mortise side wall is a columnar mortise with a superior arc wall shape of an angle of 270°-300°, and the inner section of the second central slot side wall is recessed into the adjacent outer cover side wall surface of the second splicing portion and forms a inferior arc inner wall with an angle of 60°-75°.

5. The combined container cover according to claim 4, characterized in that: The width of the inner groove is 0.25-0.5 times the thickness of the side wall of the outer cover body and 0.25-0.5 times the diameter of the hollow cylinder.

6. The combined container cover according to any one of claims 1 to 5, characterized in that: The second side inserting tenon is a dovetail tenon, and the first side inserting slot is a dovetail slot.

7. The combined container cover according to claim 6, characterized in that: The second side tenon is a rounded dovetail tenon, the first side slot is a rounded dovetail slot, a gap is provided between the rounded outer wall of the first side slot and the rounded outer wall of the second side tenon, and the plane outer wall of the first side slot and the plane outer wall of the second side tenon fit each other.

8. The combined container cover according to any one of claims 1 to 5, characterized in that: The central cover body and the inner wall of the outer cover body are connected through at least two connecting walls.

9. The combined container cover according to claim 8, characterized in that: A lower plugging column, a lower plugging hole and an upper plugging hole are also provided. The lower plugging column and the lower plugging hole are alternately arranged circumferentially on the lower edge of the connecting wall, and the upper plugging hole is arranged circumferentially on the upper wall of the outer cover body.

10. The combined container cover according to claim 8, characterized in that: The central cover body is provided with a rotating thread, and the lower edge of the central cover body is provided with an anti-theft ring connected to the connecting wall, the anti-theft ring is provided with at least one vertical incision in the vertical direction, the inner wall is provided with at least one inwardly protruding hook, and the outer wall is provided with at least one inwardly recessed horizontal recess, the vertical incision, the hook, and the horizontal recess are sequentially adjacently circumferentially arranged between two adjacent connecting walls and are arranged inversely relative to the rotating thread.

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