Packaging box with openings in upper end and lower end
By setting a detachable lower opening and lower cover at the lower end of the box body of the packaging box, and using the first clamping structure and the second clamping structure to cooperate, the problem of difficult to protect the shape and operation of the existing packaging box when taking out the food is solved, and the aesthetic protection of the food and the convenient use of packaging are achieved.
Patent Information
- Application Number
- CN202422300855.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing packaging boxes are difficult to protect the shape of the food when taking out the food, and it is difficult to operate, which can easily lead to damage to the food quality and inconvenient use of the packaging boxes.
A packaging box with open openings at both upper and lower ends is designed. The lower opening is provided with a lower cover at the lower end of the box body and a lower cover is detachably connected. The first clamping structure is provided with an edge of the lower opening. The lower cover includes a cover plate and a second clamping structure. The first clamping structure and the second clamping structure are jammed to each other to achieve a stable connection of the lower cover.
Through the stable lower cover connection, the shape of the food is protected, the difficulty of packaging operation is reduced, the convenience of packaging and the quality of the food is improved, and the packaging box is reusable.
Smart Images
Figure CN222988795U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packaging boxes, and particularly relates to a packaging box with openings at both upper and lower ends. Background Art
[0002] The existing packaging box technology includes a box body and a box cover. There is an opening at the top of the box body, and a first clamping structure is arranged near the opening, corresponding to the second clamping structure of the box cover, and they are detachably connected to achieve the technical effect of sealing and covering the opening. When using this kind of packaging box to pack objects, such as packing food, when the food is put into the box body, the food is in the state with the top surface upward and the bottom surface downward. When the diner pours the food out onto a plate, the top surface of the food will be downward and the bottom surface will be upward, which is likely to damage the shape of the food. Therefore, the existing such packaging box technology is not suitable for the situation where the shape of the object to be packaged needs to be maintained before and after packaging, for example, packaging cakes, etc.
[0003] To solve the above problems, there appears a packaging box for packaging cakes on the market: It is formed by enclosing a soft flat material into a cylindrical box body with openings at both upper and lower ends, plus a box cover and a bottom tray. When loading the cake, place the cake on the bottom tray, put on the box body, cover the box cover, and then tie and fix it with a ribbon. When taking out the cake, untie the ribbon, pick up the box body together with the box cover upward, and the cake can be taken out intact. However, since the connection between the bottom tray and the box body is prone to looseness, this packaging technology is only suitable for packaging cakes and not suitable for packaging some objects with juice or particles. Even a small amount of juice or particles will flow out from the bottom, thus affecting the quality of the object to be packaged and the packaging effect. Moreover, since it is necessary to use a ribbon for tying and fixing, it increases the difficulty of the packaging operation. Whether it is primary packaging or secondary packaging, the operator needs to master certain skills to achieve it better. Otherwise, this packaging technology is prone to the situation of the packaging box coming apart, resulting in damage to the object to be packaged. This reason also leads to the cake packaging box in the prior art being discarded after one use and being difficult to reuse.
[0004] It can be seen that the prior art still needs to be improved and enhanced. Summary of the Utility Model
[0005] In view of the deficiencies of the above prior art, the purpose of the present utility model is to provide a packaging box with openings at both upper and lower ends, aiming to solve the problem that it is difficult to connect the lower end of the box body with the corresponding detachable cover body in the prior art, and at the same time solve the problems of relatively large operation difficulty and potential adverse effects on the object to be packaged in the prior art, so as to not only effectively protect the shape of the object to be packaged during packaging, but also be convenient for use and reuse.
[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:
[0007] A packaging box with open upper and lower ends, comprising a box body. The upper end of the box body is provided with an upper opening. Among them, the lower end of the box body is provided with a lower opening, and a lower cover is detachably connected to the lower opening. A first clamping structure is arranged at the edge of the lower opening. The lower cover includes a cover plate and a second clamping structure arranged at the edge of the cover plate. The first clamping structure and the second clamping structure cooperate with each other to be clamped so that the lower cover is connected to the lower opening of the box body.
[0008] For the above-mentioned packaging box with open upper and lower ends, among them, the first clamping structure includes a transition part, a first inner abutting edge, a first connecting part and a first outer abutting edge. The transition part is fixedly connected to the edge of the lower opening of the box body and is parallel to the cover plate. The first inner abutting edge is fixedly connected to the transition part and extends downward. One side of the first connecting part is fixedly connected to the first inner abutting edge and is parallel to the transition part. The first outer abutting edge is fixedly connected to the other side of the first connecting part and extends upward.
[0009] For the above-mentioned packaging box with open upper and lower ends, among them, the first clamping structure further includes a first extended edge. The first extended edge extends outward from the first outer abutting edge and is parallel to the first connecting part. A fillet is arranged at the connection between the first extended edge and the first outer abutting edge.
[0010] For the above-mentioned packaging box with open upper and lower ends, among them, the second clamping structure includes a second inner abutting edge, a second connecting part and a second outer abutting edge. The second inner abutting edge is fixedly connected to the edge of the cover plate and extends downward. One side of the second connecting part is fixedly connected to the second inner abutting edge and is parallel to the cover plate. The second outer abutting edge is fixedly connected to the other side of the second connecting part and extends upward. The width of the second connecting part is equal to the width of the first connecting part. When the first clamping structure and the second clamping structure are connected, the first inner abutting edge abuts against the second inner abutting edge, the first connecting part abuts against the second connecting part, and the first outer abutting edge abuts against the second outer abutting edge.
[0011] For the above-mentioned packaging box with open upper and lower ends, among them, the second clamping structure further includes a second extended edge. The second extended edge extends outward from the second outer abutting edge and is parallel to the second connecting part. A fillet is arranged at the connection between the second extended edge and the second outer abutting edge. When the first clamping structure and the second clamping structure are connected, the first extended edge abuts against the second extended edge.
[0012] For the above-mentioned packaging box with open upper and lower ends, among them, opening ears are arranged on both the first extended edge and the second extended edge and extend outward, and the two opening ears overlap.
[0013] For the above-mentioned packaging box with open upper and lower ends, among them, the shape of the box body is a square tube, and the shape of the lower cover is a rectangle matching the box body. The number of the first clamping structure and the second clamping structure is at least two. The two first clamping structures are respectively arranged on two opposite side edges of the lower opening of the box body, and the two second clamping structures are respectively arranged on two opposite side edges of the lower cover and correspond to the first clamping structure.
[0014] The packaging box with openings at both the upper and lower ends, wherein a bottom support is provided at the lower opening of the box body. The bottom support extends inward from the lower edge of the side without the first clamping structure and is used to support the lower cover. The bottom support is provided with an upward limiting protrusion, and the lower cover is provided with a limiting groove for accommodating the limiting protrusion.
[0015] The packaging box with openings at both the upper and lower ends, wherein the lower cover is provided with a handle, and the handle extends upward and outward from the side of the lower cover away from the limiting groove.
[0016] The packaging box with openings at both the upper and lower ends, wherein the upper opening and the lower opening of the box body are symmetrically arranged up and down with the middle part of the box body as the axis. The upper opening is provided with an upper cover, and the upper cover is detachably connected to the box body and used to cover the upper opening. The upper cover and the lower cover are symmetrically arranged up and down with the middle part of the box body as the axis.
[0017] Beneficial effects:
[0018] The present utility model provides a packaging box with openings at both the upper and lower ends. The upper and lower ends of the box body are respectively provided with an upper opening and a lower opening. The upper opening is detachably connected with an upper cover, and the lower opening is detachably connected with a lower cover. The lower cover includes a cover plate and a second clamping structure, and the lower opening is provided with a first clamping structure for cooperating with the second clamping structure to connect. By providing a lower opening at the lower end of the box body and detachably connecting a lower cover, the problem of difficultly protecting the shape of food when taking out the food from the packaging box is solved, and the beauty of the food is ensured. By providing the cooperation connection of the first clamping structure and the second clamping structure, the problem of inconvenient and unstable connection between the existing packaging box and the lower cover is solved, the connection difficulty between the packaging box and the lower cover is reduced, and it is convenient to use. Description of the drawings
[0019] Figure 1 It is a three-dimensional structure schematic diagram of an embodiment of the packaging box with openings at both the upper and lower ends provided by the present utility model;
[0020] Figure 2 Provided by the present utility model Figure 1 The sectional structure schematic diagram in the A-A direction in;
[0021] Figure 3 Provided by the present utility model Figure 2 The partial structure schematic diagram of B in;
[0022] Figure 4 Provided by the present utility model Figure 1 The sectional structure schematic diagram of another embodiment in the C-C direction in;
[0023] Figure 5 Provided by the present utility model Figure 4 The partial structure schematic diagram of D in.
[0024] Reference numerals:
[0025] 1—Box body 2—Upper cover 3—Lower cover
[0026] 4—First clamping structure 5—Second clamping structure 6—Second clamping structure
[0027] 11—Upper opening 12—Lower opening 13—Support bottom
[0028] 14—Limit protrusion 31—Cover plate 32—Limit groove
[0029] 33—Handle 41—Transition part 42—First inner abutting edge
[0030] 43—First connecting part 44—First outer abutting edge 45—First extension edge
[0031] 51—Second inner abutting edge 52—Second connecting part 53—Second outer abutting edge
[0032] 54—Second extension edge 55—Opening ear. Detailed implementation manners
[0033] The present utility model provides a packaging box with openings at both upper and lower ends. To make the purpose, technical solutions and effects of the present utility model clearer and more definite, the following further elaborates on the present utility model with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0034] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0035] Embodiment 1.
[0036] Please refer to Figures 1 to 3As shown in the figure, the utility model provides a packaging box with openings at both the upper and lower ends, including a box body 1. The box body 1 can be a square or cylindrical tubular structure. An upper opening 11 is provided at the upper end of the box body 1. Among them, a lower opening 12 is provided at the lower end of the box body 1, and a lower cover 3 is detachably connected to the lower opening 12. A first clamping structure 4 is provided at the edge of the lower opening 12. The lower cover 3 includes a cover plate 31 and a second clamping structure 5 provided at the edge of the cover plate 31. The first clamping structure 4 and the second clamping structure 5 cooperate with each other to clamp, so that the lower cover 3 is connected to the lower opening 12 of the box body 1. In this embodiment, the first clamping structure 4 is inserted into the second clamping structure 5 and is in interference fit with the second clamping structure 5 to achieve the sealed connection between the box body 1 and the lower cover 3, preventing the juice of the food from leaking from the gap between the lower opening 12 and the lower cover 3, thereby ensuring the cleanliness, tidiness and beauty of the food packaging. An upper cover 2 is provided at the upper opening 11. The upper cover 2 is detachably connected to the box body 1 and is used to cover the upper opening 11. The upper cover 2 is not an essential component and can be replaced with plastic wrap or the like according to the actual situation to seal the upper opening 11. The first clamping structure 4 is arranged around the lower opening 12 of the box body 1. The upper opening 11 and the lower opening 12 of the box body 1 are symmetrically arranged up and down with the middle part of the box body 1 as the axis. An inverted first clamping structure 4 is provided at the upper opening 11 of the box body 1. The strength of the upper and lower first clamping structures 4 is relatively large, enough to support the side wall of the box body 1 and not easily deform; the upper cover 2 and the lower cover 3 are symmetrically arranged up and down with the middle part of the box body 1 as the axis, and the structure of the upper cover 2 is the same as that of the lower cover 3. Therefore, the upper cover 2 and the lower cover 3 can be used interchangeably, and only one kind of mold for the cover body needs to be designed during production, thereby reducing the design cost of the production mold.
[0037] By providing a lower opening 12 at the lower end of the box body 1 and detachably connecting a lower cover 3, the packaging box with openings at both the upper and lower ends solves the problem of difficultly protecting the shape of the food when taking out the food from the packaging box, ensuring the beauty of the food; by providing the first clamping structure 4 and the second clamping structure 5 to cooperate and connect, it solves the problem of inconvenient and unstable connection between the existing packaging box and the lower cover 3, reduces the connection difficulty between the packaging box and the lower cover 3, and is convenient to use.
[0038] Please refer to Figure 3As shown, the first clamping structure 4 includes a transition portion 41, a first inner abutting edge 42, a first connecting portion 43 and a first outer abutting edge 44. The transition portion 41 is fixedly connected to the edge of the lower opening 12 of the box body 1 and is parallel to the cover plate 31. The first inner abutting edge 42 is fixedly connected to the transition portion 41 and extends downward. One side of the first connecting portion 43 is fixedly connected to the first inner abutting edge 42 and is parallel to the transition portion 41. The first outer abutting edge 44 is fixedly connected to the other side of the first connecting portion 43 and extends upward. In this embodiment, the transition portion 41 extends outward from the lower opening 12 of the box body 1, and the transition portion 41 makes the first inner abutting edge 42 located outside the side wall of the box body 1, which is convenient for designing and manufacturing molds, and is more beautiful and sealed than the design of extending inward. The transition portion 41 and the first connecting portion 43 are respectively connected to the upper and lower ends of the first inner abutting edge 42 and are located on both sides thereof. The first connecting portion 43 and the first extended edge 45 are respectively located on both sides of the first outer abutting edge 44. The transition portion 41, the first inner abutting edge 42, the first connecting portion 43, the first outer abutting edge 44 and the first extended edge 45 are sequentially connected to form a structure with a cross-section similar to a "Ji" character shape. For the convenience of production and to make the first clamping structure 4 fit better with the second clamping structure 5 and improve the sealing performance, the joints of the transition portion 41 and the first inner abutting edge 42, the first inner abutting edge 42 and the first connecting portion 43, and the first connecting portion 43 and the first outer abutting edge 44 are all rounded, and the rounded corners can facilitate the guiding of the first clamping structure 4 into the second clamping structure 5.
[0039] Please refer to Figure 3 As shown, the first clamping structure 4 further includes a first extended edge 45. The first extended edge 45 extends outward from the first outer abutting edge 44 and is parallel to the first connecting portion 43. A rounded corner is provided at the joint of the first extended edge 45 and the first outer abutting edge 44. Setting the first extended edge 45 on the outside of the first outer abutting edge 44 can further enhance the overall strength of the first clamping structure 4, and the first extended edge 45 makes the first clamping structure 4 have an additional bend, thereby improving the sealing performance and stability of the first clamping structure 4 and the second clamping structure 5. The setting of the rounded corner reduces the production difficulty and improves the connection convenience during use.
[0040] Please refer to Figure 3As shown in the figure, the second clamping structure 5 includes a second inner abutting edge 51, a second connecting portion 52 and a second outer abutting edge 53. The second inner abutting edge 51 is fixedly connected to the edge of the cover plate 31 and extends downward. One side of the second connecting portion 52 is fixedly connected to the second inner abutting edge 51 and is parallel to the cover plate 31. The second outer abutting edge 53 is fixedly connected to the other side of the second connecting portion 52 and extends upward. The width of the second connecting portion 52 is equal to the width of the first connecting portion 43. When the first clamping structure 4 is connected to the second clamping structure 5, the first inner abutting edge 42 abuts against the second inner abutting edge 51, the first connecting portion 43 abuts against the second connecting portion 52, and the first outer abutting edge 44 abuts against the second outer abutting edge 53. In this embodiment, correspondingly to the first clamping structure 4, the second clamping structure 5 is located at the outer edge of the cover plate 31, that is, the second inner abutting edge 51 is on the outer side of the cover plate 31, the second connecting portion 52 is on the outer side of the second inner abutting edge 51, the second outer abutting edge 53 is on the outer side of the second connecting portion 52, and the second inner abutting edge 51, the second connecting portion 52, the second outer abutting edge 53 and the second extended edge 54 are sequentially connected to form a structure with a cross-section similar to the shape of the Chinese character "ji". For the convenience of production and to make the first clamping structure 4 and the second clamping structure 5 fit better and improve the sealing performance, the joints between the second inner abutting edge 51 and the second connecting portion 52, and between the second connecting portion 52 and the second outer abutting edge 53 are all rounded, and the rounded corners can facilitate the guiding of the first clamping structure 4 into the second clamping structure 5.
[0041] Please refer to Figure 3 As shown in the figure, the second clamping structure 5 further includes a second extended edge 54. The second extended edge 54 extends outward from the second outer abutting edge 53 and is parallel to the second connecting portion 52. A rounded corner is provided at the joint between the second extended edge 54 and the second outer abutting edge 53 to guide the first outer abutting edge 44 into the inner side of the second outer abutting edge 53. When the first clamping structure 4 is connected to the second clamping structure 5, the first extended edge 45 abuts against the second extended edge 54. The provision of the second extended edge 54 on the outer side of the second outer abutting edge 53 can further enhance the overall strength of the second clamping structure 5, and the second extended edge 54 makes the second clamping structure 5 have an additional bend, thereby improving the sealing performance and stability between the first clamping structure 4 and the second clamping structure 5. The setting of the rounded corner reduces the production difficulty and improves the connection convenience during use.
[0042] Please refer to Figure 1 As shown in the figure, the first extended edge 45 and the second extended edge 54 both extend outward with opening ears 55 provided. The two opening ears 55 are overlapped. In actual application, after the box body 1 and the lower cover 3 are connected via the first clamping structure 4 and the second clamping structure 5, when the user needs to separate the box body 1 and the lower cover 3, the user can respectively hold the two opening ears 55 with both hands and forcefully separate them up and down, so that the first clamping structure 4 and the second clamping structure 5 can be separated, thereby achieving the purpose of opening the lower cover 3.
[0043] Please refer to Figure 1 As shown, the shape of the box body 1 is preferably a square cylinder, and the shape of the lower cover 3 is a rectangle matching the box body 1; the number of the first clamping structures 4 and the second clamping structures 5 is at least two. The two first clamping structures 4 are respectively arranged on two opposite side edges of the lower opening 12 of the box body 1, and the two second clamping structures 5 are respectively arranged on two opposite side edges of the lower cover 3 and correspond to the first clamping structures 4. In this embodiment, both the first clamping structure 4 and the second clamping structure 5 are long groove-shaped structures and are arranged along the side lengths of the lower opening 12 and the cover plate 31. The number of the first clamping structures 4 and the second clamping structures 5 is four each, and the four first clamping structures 4 are arranged around the edge of the lower opening 12 end to end, and the four second clamping structures 5 are arranged around the four edges of the cover plate 31 end to end.
[0044] In some other embodiments, when the box body 1 is in a cylindrical shape, the first clamping structure 4 is an annular groove structure and the number is only one, and the second clamping structure 5 is arranged in a matching manner.
[0045] Embodiment 2.
[0046] In this embodiment, the shape of the box body 1 is preferably a square cylinder, and the shape of the lower cover 3 is a rectangle matching the box body 1; the number of the first clamping structures 4 and the second clamping structures 5 is two. The two first clamping structures 4 are respectively arranged on two opposite side edges of the lower opening 12 of the box body 1, preferably arranged at the long side positions of the lower opening 12, and the two second clamping structures 5 are respectively arranged on two opposite side edges of the lower cover 3 and correspond to the first clamping structures 4. The two second clamping structures 5 serve as chutes, and the two first clamping structures 4 serve as sliders and are respectively slidably accommodated in the two second clamping structures 5. When the lower cover 3 needs to be opened, the lower cover 3 can be pulled out from the bottom of the box body 1.
[0047] Please refer to Figures 4 to 5 As shown, a supporting bottom 13 is arranged at the lower opening 12 of the box body 1. The supporting bottom 13 extends inward from the lower edge of the side without the first clamping structure 4 and is used to support the lower cover 3. The supporting bottom 13 is provided with an upward limiting protrusion 14, and the lower cover 3 is provided with a limiting groove 32 for accommodating the limiting protrusion 14. In this embodiment, when the lower cover 3 is connected and shielded at the lower opening 12, the upper surface of the supporting bottom 13 is closely attached to the inner surface of the cover plate 31, preventing foreign objects from entering through the gap between the two or internal food from falling out through the gap. The cooperation of the limiting protrusion 14 and the limiting groove 32 limits and fixes the lower cover 3 to prevent the lower cover 3 from sliding off the box body 1, thus causing the internal food to fall.
[0048] Please refer to Figure 4As shown, the lower cover 3 is provided with a handle 33 which extends upward and outward from the side of the lower cover 3 away from the limit groove 32. In this embodiment, a relief groove is provided on the side wall of the box body 1 corresponding to the handle 33. When the lower cover 3 is connected and covers the lower opening 12, the inner side surface of the handle 33 closely adheres to the outer side surface of the box body 1 and completely covers the relief groove, preventing foreign objects from entering through the gap between the two and the relief groove or preventing the internal food from falling out through the gap and the relief groove. When it is necessary to open the lower cover 3, the user holds the handle 33 with one hand and pulls it outward, and holds the box body 1 with the other hand without moving, then the lower cover 3 and the food it supports can be pulled out. The design of the relief groove enables the food inside the box body 1 not to be blocked by the side wall of the box body 1 during the process of being pulled out.
[0049] The rest of this embodiment is the same as that of Embodiment 1. For the features not explained in this embodiment, the explanations of Embodiment 1 are adopted and will not be elaborated here.
[0050] In summary, the present utility model solves the problem of difficultly protecting the food shape when taking out food from the packaging box by providing a lower opening 12 at the lower end of the box body 1 and detachably connecting a lower cover 3, ensuring the beauty of the food; by providing the first clamping structure 4 and the second clamping structure 5 which are cooperatively connected, the problem of inconvenient and unstable connection between the existing packaging box and the lower cover 3 is solved, reducing the connection difficulty between the packaging box and the lower cover 3 and facilitating use.
[0051] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution of the present utility model and its inventive concept, and all such changes or substitutions should fall within the protection scope of the appended claims of the present utility model.
Claims
1. A packaging box with openings at both ends, comprising a box body (1), wherein the upper end of the box body (1) is provided with an upper opening (11), characterized in that: A lower opening (12) is provided at the lower end of the box body (1), and the lower opening (12) is detachably connected to a lower cover (3). A first clamping structure (4) is provided at the edge of the lower opening (12), and the lower cover (3) comprises a cover plate (31) and a second clamping structure (5) provided at the edge of the cover plate (31). The first clamping structure (4) and the second clamping structure (5) are mutually engaged and clamped so that the lower cover (3) is connected to the lower opening (12) of the box body (1).
2. The packaging box with upper and lower ends opened according to claim 1, characterized in that: The first clamping structure (4) comprises a transition portion (41), a first inner abutment (42), a first connecting portion (43) and a first outer abutment (44); the transition portion (41) is fixedly connected to the edge of the lower opening (12) of the box body (1) and is parallel to the cover plate (31); the first inner abutment (42) is fixedly connected to the transition portion (41) and extends downward; one side of the first connecting portion (43) is fixedly connected to the first inner abutment (42) and is parallel to the transition portion (41); and the first outer abutment (44) is fixedly connected to the other side of the first connecting portion (43) and extends upward.
3. The packaging box with upper and lower ends opened according to claim 2, characterized in that: The first clamping structure (4) further comprises a first extended edge (45), the first extended edge (45) extending outward from the first outer abutting edge (44) and being parallel to the first connecting portion (43), and a chamfered corner being arranged at the connection between the first extended edge (45) and the first outer abutting edge (44).
4. The packaging box with upper and lower ends opened according to claim 3, characterized in that: The second clamping structure (5) comprises a second inner abutting edge (51), a second connecting portion (52) and a second outer abutting edge (53); the second inner abutting edge (51) is fixedly connected to the edge of the cover plate (31) and extends downward; one side of the second connecting portion (52) is fixedly connected to the second inner abutting edge (51) and is parallel to the cover plate (31); the second outer abutting edge (53) is fixedly connected to the other side of the second connecting portion (52) and extends upward; the width of the second connecting portion (52) is equal to the width of the first connecting portion (43); when the first clamping structure (4) is connected to the second clamping structure (5), the first inner abutting edge (42) abuts against the second inner abutting edge (51), the first connecting portion (43) abuts against the second connecting portion (52), and the first outer abutting edge (44) abuts against the second outer abutting edge (53).
5. The packaging box with upper and lower ends opened according to claim 4, characterized in that: The second clamping structure (5) further comprises a second extended edge (54), the second extended edge (54) extending outward from the second outer abutting edge (53) and being parallel to the second connecting portion (52), a chamfer being provided at the connection between the second extended edge (54) and the second outer abutting edge (53); when the first clamping structure (4) and the second clamping structure (5) are connected, the first extended edge (45) abuts against the second extended edge (54).
6. The packaging box with upper and lower ends opened according to claim 5, characterized in that: The first extended edge (45) and the second extended edge (54) are both provided with opening grab ears (55) extending outwards, and the two opening grab ears (55) are arranged overlappingly.
7. The packaging box with upper and lower ends opened according to claim 5, characterized in that: The box body (1) is in the shape of a square cylinder, and the lower cover (3) is in the shape of a rectangle matching the box body (1); the number of the first clamping structure (4) and the second clamping structure (5) is at least two, the two first clamping structures (4) are respectively arranged at two opposite side edges of the lower opening (12) of the box body (1), and the two second clamping structures (5) are respectively arranged at two opposite side edges of the lower cover (3) and correspond to the first clamping structures (4).
8. The packaging box with upper and lower ends opened according to claim 7, characterized in that: A supporting bottom portion (13) is provided at the lower opening (12) of the box body (1), the supporting bottom portion (13) extending inwardly from the lower edge of the side without the first clamping structure (4) and used to support the lower cover (3), the supporting bottom portion (13) is provided with an upward limiting protrusion (14), and the lower cover (3) is provided with a limiting groove (32) for accommodating the limiting protrusion (14).
9. The packaging box with upper and lower ends opened according to claim 8, characterized in that: The lower cover (3) is provided with a handle (33), and the handle (33) is extended upward and outward from a side of the lower cover (3) away from the limiting groove (32).
10. The packaging box with upper and lower ends opened according to claim 6, characterized in that: The upper opening (11) and the lower opening (12) of the box body (1) are symmetrically arranged in the vertical direction with the middle part of the box body (1) as an axis; the upper opening (11) is provided with an upper cover (2); the upper cover (2) is detachably connected to the box body (1) and is used to cover the upper opening (11); the upper cover (2) and the lower cover (3) are symmetrically arranged in the vertical direction with the middle part of the box body (1) as an axis.