Triangular top and bottom box

CN224618256UActive Publication Date: 2026-08-11SHANGHAI ZIDAN FOOD PACKAGING & PRINTING CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-11
Publication Date
2026-08-11

AI Technical Summary

Technical Problem

[0003]然而,由于天盖与地盖之间没有预留出手指可以着力的地方,人们在打开天盖时会感到十分费力,找不到合适的施力点

Benefits of technology

[0018] In summary, in this invention, when the lid is attached to the base cover, a protrusion on the base cover allows the user to easily open the lid by pinching the protrusion with their fingers. Furthermore, the folded lid has no visible creases, resulting in a cleaner and smoother appearance and enhancing the overall aesthetics.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a triangular top and bottom box made of paper material, comprising a top cover and a bottom cover. The top cover snaps onto and covers the bottom cover. Both the top and bottom covers are triangular in structure, and the two long edges of the bottom surface of the bottom cover each have outward protrusions that facilitate finger gripping. In this utility model, when the top and bottom box are snapped onto the bottom cover, the protrusions on the bottom cover allow the user to easily open the box by pinching the protrusions with their fingers.
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Description

Technical Field

[0001] This utility model relates to the field of product packaging, specifically to a triangular top and bottom box. Background Technology

[0002] Packaging is an indispensable part of the sales process for all kinds of products, and paper packaging, with its many advantages, has become a key method of product packaging, with consistently high market demand. The top and bottom box, a common structure in paper packaging, is widely used. It mainly consists of two parts: a top lid and a bottom lid. When the top lid is fastened to the bottom lid, it completely covers the bottom lid. The advantage of this design is its excellent aesthetics, presenting a neat and refined visual effect.

[0003] However, because there's no designated gripping area between the top and bottom lids, opening the top lid is quite difficult, as it's hard to find a suitable point of leverage. This problem is especially pronounced when the top and bottom lids are used to package small cakes. Many people instinctively tilt the box to try and use gravity to open the top lid, but this easily causes the small cakes inside to stick to the inner wall of the box, affecting their appearance and providing a poor user experience. Utility Model Content

[0004] Based on this, and in response to the aforementioned technical problems, this utility model provides a triangular top and bottom box.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A triangular top and bottom box, made of paper material, includes a top cover and a bottom cover. The top cover is fastened to the bottom cover and wraps around it. Both the top cover and the bottom cover have a triangular structure. The two long edges of the bottom surface of the bottom cover each have outward protrusions that facilitate finger gripping.

[0007] Using the above technical solution, the triangular top-and-bottom box is more visually distinctive than the common square and round top-and-bottom boxes. Moreover, the triangle is the most stable geometric structure, with its three sides supporting each other and distributing external pressure. Compared to square and round top-and-bottom boxes, the triangular paper top-and-bottom box is less prone to deformation and collapse when squeezed or stacked, providing more reliable support for the contents. Additionally, the protrusion on the bottom cover allows users to easily open the box by pinching the protrusion with their fingers, avoiding the problem of traditional top-and-bottom boxes being difficult to open due to smooth edges and a tight fit.

[0008] In a specific embodiment of this utility model: the canopy includes a triangular top plate, a front side plate and a rear side plate connected to the front and rear edges of the top plate, and a right side plate connected to the right edge of the top plate.

[0009] In a specific embodiment of this utility model: a tongue is connected to the right edge of the rear side panel, and a corner plate is connected to the rear edge of the right side panel. A socket is provided at the junction of the right side panel and the corner plate, and the tongue is inserted into the socket. This prevents the rear side panel and the right side panel from easily separating.

[0010] In a specific embodiment of this utility model: the left edge of the front side panel is connected to a left front piece that is folded and attached to the inner surface of the front side panel; the left edge of the rear side panel is connected to a left rear piece that is folded and attached to the inner surface of the left front piece; the lower edges of the left front piece and the left rear piece are connected together; the right edge of the front side panel is connected to a right front piece that is folded and located on the inner surface of the front side panel; the front edge of the right side panel is connected to a side piece that is folded and located on the inner surface of the right front piece; the lower edges of the right front piece and the side piece are connected together.

[0011] In a specific embodiment of this utility model: the upper edge of the front panel is connected to a folded plate that is located on the inner surface of the front panel after folding. The left and right edges of the folded plate are respectively connected to a first limiting piece and a second limiting piece. The upper edge of the rear panel is connected to a first adhesive plate that is folded and pasted on the inner surface of the rear panel. The left side of the first adhesive plate has a first limiting notch that cooperates with the first limiting piece. The upper edge of the right panel is connected to a second adhesive plate that is folded and pasted on the inner surface of the right panel. The front side of the second adhesive plate has a second limiting notch that cooperates with the second limiting piece. The first limiting piece has multiple first fold lines, and the second limiting piece has second fold lines. The multiple first fold lines are folded in sequence so that the first locking head of the first limiting piece is located in the first limiting notch. The second fold lines are folded so that the second locking head of the second limiting piece is located in the second limiting notch.

[0012] In this way, the locking head of the first limiting piece is located within the first limiting notch, and the locking head of the second limiting piece is located within the second limiting notch, forming a double fixation of locking and limiting. This effectively restricts the relative displacement between the folding plate, the first adhesive plate, and the second adhesive plate, thus preventing the top cover from becoming loose due to shaking or external force during use. Moreover, the folding plate is fixed to the inner surface of the front side panel through the locking of the limiting piece and the notch, while the first and second adhesive plates are respectively adhered to the inner surfaces of their respective side panels. The three work together to form a stable structure with multi-directional force, making the overall structure of the top cover less prone to deformation or falling apart. In addition, after folding, the folding plate, the two limiting pieces, and the two adhesive plates are all located inside the top cover, so that creases are not visible on the outside of the top cover, making the top cover look cleaner and flatter, thereby improving the overall aesthetics of the top and bottom box.

[0013] In a specific embodiment of this utility model: the ground cover includes a triangular base, a front side and a rear side that are connected to the front and rear sides of the base, and a right side that is connected to the right side of the base.

[0014] In a specific embodiment of this utility model: the front side includes a first plate and a second plate. The first plate is perpendicular to the bottom surface, and its lower edge is connected to the front edge of the bottom surface. The second plate is located inside the first plate, and their upper edges are connected. The left sides of the opposite surfaces of the first plate and the second plate are connected. The rear side includes a third plate and a fourth plate. The third plate is perpendicular to the bottom surface, and its lower edge is connected to the rear edge of the bottom surface. The fourth plate is located inside the third plate, and their upper edges are connected. The middle of the opposite surfaces of the third plate and the fourth plate is connected. The front and rear edges of the right side are respectively connected to a first insert and a second insert. The left edge of the first plate is connected to a third insert. The first insert is folded and inserted into the gap between the first plate and the second plate. The second insert is folded and inserted into the gap between the right sides of the third plate and the fourth plate. The third insert is folded and inserted into the gap between the left sides of the third plate and the fourth plate.

[0015] In this way, the front side is composed of the first and second panels, and the rear side is composed of the third and fourth panels. The first and second panels are connected on the left side, and the third and fourth panels are connected in the middle. Compared with a single-layer side panel, it can withstand greater vertical or lateral pressure, effectively reducing dents or tilting during use. Secondly, the first insert is inserted into the gap between the first and second panels, the second insert is inserted into the right gap between the third and fourth panels, and the third insert is inserted into the left gap between the third and fourth panels. In this way, the right side, front side, and rear side are firmly connected into a whole, limiting the relative displacement of each side panel. Even if subjected to external impact, it is not easy for the sides to fall apart or loosen, which greatly improves the overall load-bearing capacity and impact resistance of the floor cover.

[0016] In a specific embodiment of this utility model: a buckle groove is provided on the right side plate.

[0017] In a specific embodiment of this utility model: the bottom of both the front side and the rear side has the protrusion formed by a solid tangent line.

[0018] In summary, in this invention, when the lid is attached to the base cover, a protrusion on the base cover allows the user to easily open the lid by pinching the protrusion with their fingers. Furthermore, the folded lid has no visible creases, resulting in a cleaner and smoother appearance and enhancing the overall aesthetics. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of a triangular top and bottom box according to this utility model;

[0021] Figure 2 This shows the canopy fully extended;

[0022] Figure 3 The first adhesive board is attached to the rear panel, and the second adhesive board is attached to the right side panel;

[0023] Figure 4 Insert the tongue into the socket;

[0024] Figure 5 The front panel is folded upwards;

[0025] Figure 6 The folding panel is designed to fold inwards.

[0026] Figure 7 The first limiting piece is shown to have its locking head engaged within the first limiting notch;

[0027] Figure 8 This shows the ground cover fully extended;

[0028] Figure 9 The first and second boards are glued together, and the third and fourth boards are glued together;

[0029] Figure 10 The third insert is shown inserted into the gap between the left side of the third and fourth plates;

[0030] Figure 11 It shows a folded floor cover. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1 , Figure 6 and Figure 11As shown, this utility model is a triangular top and bottom box made of paper material, comprising a triangular top cover 10 and a triangular bottom cover 20. When the top cover 10 is fastened onto the bottom cover 20, it can completely cover the bottom cover 20. Compared with common square or round top and bottom boxes, the triangular structure of the top and bottom box is more visually distinctive. Moreover, when subjected to compression or stacking, the triangular structure is stable, not easily deformed or collapsed, and provides more reliable support for the contents. The bottom cover 20 has two outwardly protruding protrusions 26 on its two long edges, which facilitate finger gripping. Thus, when it is necessary to open the packaging, the user can directly pinch the protrusions with their fingers to easily open the top and bottom box, avoiding the problem of traditional top and bottom boxes being difficult to open due to smooth edges and a tight fit.

[0033] like Figure 2 and Figure 6 As shown, in this embodiment, the canopy 10 includes a triangular top plate 11, a front side plate 12 and a rear side plate 13 connected to the front and rear edges of the top plate 11, and a right side plate 14 connected to the right edge of the top plate 11.

[0034] For example, 2. Figure 4 and Figure 6 As shown, a tongue 131 is connected to the right edge of the rear panel 13. A corner plate 141 is connected to the rear edge of the right side panel 14. A socket 142 is provided at the junction of the right side panel 14 and the corner plate 141. The tongue 131 is inserted into the socket 142. This makes it difficult for the rear panel 13 and the right side panel 14 to come apart.

[0035] like Figure 2 , Figure 4 , Figure 7 As shown, a left front panel 121, which is folded and attached to the inner surface of the front side panel 12, is connected to the left edge of the front side panel 12. A left rear panel 132, which is folded and attached to the inner surface of the left front panel 121, is connected to the left edge of the rear side panel 13. The lower edges of the left front panel 121 and the left rear panel 132 are connected. A right front panel 122, which is folded and located on the inner surface of the front side panel 12, is connected to the right edge of the front side panel 12. A side panel 143, which is folded and located on the inner surface of the right front panel 122, is connected to the front edge of the right side panel 14. The lower edges of the right front panel 122 and the side panel 143 are connected.

[0036] like Figure 2 , Figure 4 , Figure 5 and Figure 7As shown, a folding plate 15, which is folded and located on the inner surface of the front side panel 12, is connected to the upper edge of the front side panel 12. A first limiting piece 151 and a second limiting piece 152 are connected to the left and right edges of the folding plate 15, respectively. A first adhesive plate 16, which is folded and pasted onto the inner surface of the rear side panel 13, is connected to the upper edge of the rear side panel 13. A first limiting notch 161, which mates with the first limiting piece 151, is located on the left side of the first adhesive plate 16. A second adhesive plate 17, which is folded and pasted onto the inner surface of the right side panel 14, is connected to the upper edge of the right side panel 14. A second limiting notch 171, which mates with the second limiting piece 152, is located on the front side of the second adhesive plate 17. Furthermore, the first limiting piece 151 has multiple first crease lines 153. The second limiting piece 152 has second crease lines 154. By folding multiple first crease lines 153 in sequence, the first locking head 1511 of the first limiting piece 151 is located within the first limiting notch 161; by folding the second crease line 154, the second locking head 1521 of the second limiting piece 152 is located within the second limiting notch 171.

[0037] In this way, the locking head of the first limiting piece is located within the first limiting notch, and the locking head of the second limiting piece is located within the second limiting notch, forming a double fixation of locking and limiting. This effectively restricts the relative displacement between the folding plate, the first adhesive plate, and the second adhesive plate, thus preventing the top cover from becoming loose due to shaking or external force during use. Moreover, the folding plate is fixed to the inner surface of the front side panel through the locking of the limiting piece and the notch, while the first and second adhesive plates are respectively adhered to the inner surfaces of their respective side panels. The three work together to form a stable structure with multi-directional force, making the overall structure of the top cover less prone to deformation or falling apart. In addition, after folding, the folding plate, the two limiting pieces, and the two adhesive plates are all located inside the top cover, so that creases are not visible on the outside of the top cover, making the top cover look cleaner and flatter, thereby improving the overall aesthetics of the top and bottom box.

[0038] like Figure 11 As shown, in this embodiment, the ground cover 20 includes a triangular base 21, a front side 22 and a rear side 23 connected to the front and rear sides of the base 21, and a right side 24 connected to the right side of the base 21.

[0039] like Figure 8 and Figure 11As shown, in this embodiment, the front side 22 includes a first plate 221 and a second plate 222. The first plate 221 is perpendicular to the bottom surface 21, and its lower edge is connected to the front edge of the bottom surface 21. The second plate 222 is located inside the first plate 221, and their upper edges are connected. The left sides of the opposite surfaces of the first plate 221 and the second plate 222 are connected. The rear side 23 includes a third plate 231 and a fourth plate 232. The third plate 231 is perpendicular to the bottom surface 21, and its lower edge is connected to the rear edge of the bottom surface 21. The fourth plate 232 is located inside the third plate 231, and their upper edges are connected. The middle of the opposite surfaces of the third plate 231 and the fourth plate 232 are connected. Thus, the front side is composed of the first plate and the second plate, and the rear side is composed of the third plate and the fourth plate. The first plate and the second plate are connected on their left sides, and the third plate and the fourth plate are connected in the middle. Compared with a single-layer side plate, this design can withstand greater vertical or lateral pressure, effectively reducing dents or tilting during use.

[0040] A first insert 241 and a second insert 242 are connected to the front and rear edges of the right side panel 24, respectively. A third insert 223 is connected to the left edge of the first plate 221. During assembly, the first insert 241 is folded and inserted into the gap between the right sides of the first plate 221 and the second plate 22, the second insert 242 is folded and inserted into the gap between the right sides of the third plate 231 and the fourth plate 232, and the third insert 223 is folded and inserted into the gap between the left sides of the third plate 231 and the fourth plate 232. In this way, the right side, front side, and rear side are firmly connected into a whole, which can limit the relative displacement of each side plate. Even if subjected to external force impact, it is not easy for the sides to fall apart or loosen, which greatly improves the overall load-bearing capacity and impact resistance of the floor cover.

[0041] like Figure 8 As shown, in this embodiment, the right side plate 24 is provided with a buckle groove 243.

[0042] In this embodiment, both the front side 22 and the rear side 23 have protrusions 26 formed by solid tangents 25 at their bottoms.

[0043] The above describes a triangular top and bottom box according to this utility model. Figures 2-7As shown, when assembling the top cover 10, the top plate 11 is laid flat, and the rear side plate 13 and the right side plate 14 are folded upwards by 90° respectively. Then, the tongue 131 on the right edge of the rear side plate 13 is folded, and at the same time, the corner plate 141 on the rear edge of the right side plate 14 is folded, so that the tongue 131 is aligned with the socket 142 and inserted. After completion, the connection between the side plate 13 and the right side plate 14 is fixed to prevent them from separating. Next, fold the front panel 12 upwards. At the same time, fold the left front piece 121 on the left edge of the front panel 12 and the left rear piece 132 on the left edge of the rear panel 13 inwards, and fold the right front piece 122 on the right edge of the front panel 12 and the side piece 143 on the front edge of the right side panel 14 inwards. The left front piece 121 is attached to the inner surface of the front panel 12, the left rear piece 132 is attached to the inner surface of the left front piece 121, the right front piece 122 is attached to the inner surface of the front panel 12, and the side piece 143 is located on the inner surface of the right front piece 122. Subsequently, the first adhesive plate 16 is folded inward to adhere to the inner surface of the rear panel, the second adhesive plate 17 is folded inward to adhere to the inner surface of the right side panel 14, the folding plate 15 is folded inward to fit against the inner surface of the front panel 12, and the first fold line 153 on the first limiting piece 151 is folded in sequence so that the first locking head 1511 of the first limiting piece 151 is inserted into the first limiting notch 161, and the second fold line 154 on the second limiting piece 152 is folded so that the second locking head 1521 of the second limiting piece 152 is inserted into the second limiting notch 171, and the top cover 10 is folded into shape.

[0044] like Figures 8-11 As shown, during the assembly of the floor cover 20, the triangular base 21 is laid flat. First, the first plate 221 and the second plate 222 are glued together, and then the third plate 231 and the fourth plate 232 are glued together. Then, the first plate 221, the third plate 231, and the right side 24 are folded upwards. The first insert 241 is folded and inserted into the gap on the right side of the first plate 221 and the second plate 222; the second insert 242 is folded and inserted into the gap on the right side of the third plate 231 and the fourth plate 232; the third insert 223 is folded and inserted into the gap on the left side of the third plate 231 and the fourth plate 232. The floor cover 20 is then folded into shape.

[0045] Finally, as Figure 1 As shown, place the product inside the base cover 20 and fasten the top cover 10 onto the base cover 20 to complete the assembly of the entire triangular top and bottom box.

[0046] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A triangular top and bottom box, made of paper material, comprising a top cover and a bottom cover, wherein the top cover fastens onto and covers the bottom cover, characterized in that, Both the top cover and the bottom cover adopt a triangular structure, and the two long edges of the bottom surface of the bottom cover have outward protrusions that facilitate finger pressure.

2. The triangular top and bottom box according to claim 1, characterized in that, The canopy includes a triangular top plate, a front side plate and a rear side plate that are vertically connected to the front and rear edges of the top plate, and a right side plate that is vertically connected to the right edge of the top plate.

3. The triangular top and bottom box according to claim 2, characterized in that, The right edge of the rear panel is connected to a tongue, the rear edge of the right side panel is connected to a corner plate, and a socket is provided at the junction of the right side panel and the corner plate, into which the tongue is inserted.

4. The triangular top and bottom box according to claim 2, characterized in that, The left edge of the front panel is connected to a left front piece that is folded and attached to the inner surface of the front panel. The left edge of the rear panel is connected to a left rear piece that is folded and attached to the inner surface of the left front piece. The lower edges of the left front piece and the left rear piece are connected. The right edge of the front panel is connected to a right front piece that is folded and located on the inner surface of the front panel. The front edge of the right side panel is connected to a side piece that is folded and located on the inner surface of the right front piece. The lower edge of the right front piece is connected to the side piece.

5. The triangular top and bottom box according to claim 2, characterized in that, The upper edge of the front panel is connected to a folded plate that, when folded, is located on the inner surface of the front panel. The left and right edges of the folded plate are respectively connected to a first limiting piece and a second limiting piece. The upper edge of the rear panel is connected to a first adhesive plate that, when folded, is pasted onto the inner surface of the rear panel. The left side of the first adhesive plate has a first limiting notch that mates with the first limiting piece. The upper edge of the right panel is connected to a second adhesive plate that, when folded, is pasted onto the inner surface of the right panel. The front side of the second adhesive plate has a second limiting notch that mates with the second limiting piece. The first limiting piece has multiple first crease lines, and the second limiting piece has second crease lines. The multiple first crease lines are folded sequentially so that the first locking head of the first limiting piece is located within the first limiting notch. The second crease lines are folded so that the second locking head of the second limiting piece is located within the second limiting notch.

6. The triangular top and bottom box according to claim 1, characterized in that, The ground cover includes a triangular base, a front side and a rear side that are connected to the front and rear sides of the base, and a right side that is connected to the right side of the base.

7. The triangular top and bottom box according to claim 6, characterized in that, The front side includes a first plate and a second plate. The first plate is perpendicular to the bottom surface, and its lower edge is connected to the front edge of the bottom surface. The second plate is located inside the first plate, and their upper edges are connected. The left sides of the opposite surfaces of the first and second plates are connected. The rear side includes a third plate and a fourth plate. The third plate is perpendicular to the bottom surface, and its lower edge is connected to the rear edge of the bottom surface. The fourth plate is located inside the third plate, and their upper edges are connected. The middle of the opposite surfaces of the third and fourth plates is connected. The front and rear edges of the right side are respectively connected to a first insert and a second insert. The left edge of the first plate is connected to a third insert. The first insert is folded and inserted into the gap between the right sides of the first and second plates. The second insert is folded and inserted into the gap between the right sides of the third and fourth plates. The third insert is folded and inserted into the gap between the left sides of the third and fourth plates.

8. The triangular top and bottom box according to claim 2, characterized in that, The right side panel is provided with a buckle groove.

9. The triangular top and bottom box according to claim 6, characterized in that, The bottom of both the front and rear sides has the protrusion formed by a solid tangent.