Flip cover packaging box

Abstract

A flip cover packaging box comprises a first cover (01), a second cover (02) and a connecting structure (03), wherein the first cover is foldably connected to the second cover by means of the connecting structure, the connecting structure is provided with a crease, two sides of the crease are respectively provided with a protruding portion and a recessed portion, and when the first cover and the second cover are closed together, the protruding portion is embedded in the recessed portion to form a sealed structure.

Description

A flip-top packaging box

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent application 202422088763.8, filed on August 27, 2024, entitled “A Flip-Top Packaging Box”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of packaging products, and more particularly to a flip-top packaging box. Background Technology

[0004] In modern packaging technology, flip-top boxes are widely used for packaging various liquid products. However, the design of these boxes still presents some challenges in terms of leak-proof performance and production costs. Common flip-top boxes employ a snap-lock design, which, while convenient for opening and closing, often leaves a tiny gap between the lid and the box body, making it easy for liquids to leak, thus affecting product quality and user experience.

[0005] To improve leak-proof performance, some related technologies employ a top-and-bottom lid design. This design consists of two separate parts: a lid and a box body, providing a better seal when closed. However, this design requires the creation of two separate molds, increasing mold costs and manufacturing complexity, thus raising overall production costs. Furthermore, the multiple assembly and debugging processes also increase labor and time costs.

[0006] Relevant technical literature has described some improvements to the connection structure of flip-top boxes. For example, one related technology provides a flip-top box design where the upper and lower lids are connected by a simple locking structure. However, this connection method still has shortcomings in terms of leak-proof performance because the locking structure cannot ensure a completely tight fit between the upper and lower lids, allowing liquid leakage to still occur. Summary of the Invention

[0007] This application provides a flip-top packaging box, comprising:

[0008] The system comprises a first cover, a second cover, and a connecting structure. The first cover is foldably connected to the second cover via the connecting structure. The connecting structure has a fold line, and protrusions and recesses are respectively provided on both sides of the fold line. When the first cover and the second cover are closed together, the protrusions are embedded in the recesses to form a sealing structure.

[0009] Optionally, the first cover, the second cover, and the connecting structure are formed in one piece using a single mold.

[0010] Optionally, the recessed portion is hollowed out with an elongated through hole.

[0011] Optionally, the elongated through hole can be a rectangular through hole or an elliptical through hole.

[0012] Optionally, the connecting structure has three elongated recesses.

[0013] Optionally, a barrier is provided at the edge of the first cover, and a groove or protrusion is provided on the inner surface of the barrier. A flange is provided on the second cover. When the first cover and the second cover are closed, the flange of the second cover is engaged in the groove or abuts against the protrusion.

[0014] Optionally, the inner wall of the first cover is bent outward at the edge to form a first abutting surface, and the inner wall of the second cover is bent outward at the edge to form a second abutting surface. When the first cover and the second cover are closed, the first abutting surface and the second abutting surface are tightly fitted together.

[0015] Optionally, the first cover is the upper cover, and the second cover is the lower cover.

[0016] Optionally, the connecting structure has inward chamfers on both sides.

[0017] Optionally, the first cover and the second cover are provided with multiple reinforcing ribs.

[0018] Optionally, the reinforcing ribs are provided on the inner surfaces of the first cover and the second cover.

[0019] Optionally, the reinforcing ribs are strip-shaped or cylindrical.

[0020] Optionally, the fence is bent outward to form a contact surface for contact. From the above technical solutions, it can be seen that this application has the following advantages:

[0021] 1. By incorporating folds and protrusions and recesses on both sides of the connecting structure, the protrusions embed into the recesses to form a tight seal when the first and second covers are closed. This design effectively prevents liquid leakage and ensures the safety of the contents inside the packaging box.

[0022] 2. The connection structure provided in this application connects the first cover and the second cover, which can be easily manufactured by integral molding with a single mold, simplifying the production process, reducing the number of molds and production steps, thereby reducing production costs.

[0023] 3. The packaging box provided in this application achieves both a flip-top connection and a sealing effect, making it highly applicable. Attached Figure Description

[0024] Figure 1 is a schematic diagram of an overall structure of the flip-top packaging box provided in this application;

[0025] Figure 2 is another overall structural diagram of the flip-top packaging box provided in this application;

[0026] Figure 3 is a structural diagram of the connecting structure in the flip-top packaging box provided in this application;

[0027] Figure 4 is another structural diagram of the connecting structure in the flip-top packaging box provided in this application;

[0028] Figure 5 is another overall structural diagram of the flip-top packaging box provided in this application;

[0029] Figure 6 is a cross-sectional structural diagram of the flip-top packaging box provided in this application when closed.

[0030] Explanation of reference numerals in the attached drawings: 01: First cover; 02: Second cover; 03: Connecting structure; 04: Fold line; 05: Protrusion; 06: Recess; 07: Elongated through hole; 08: Enclosure; 09: Flange; 10: Protrusion; 11: First abutment surface; 12: Second abutment surface; 13: Chamfer; 14: Reinforcing rib; 15: Contact surface. Detailed Implementation

[0031] In this application, terms such as "upper," "lower," "inner," "outer," and "middle," which indicate directional and positional relationships, are used only to illustrate the structure of this application more clearly in conjunction with the accompanying drawings, and this application is not limited thereto.

[0032] Additionally, the term "above" may also be used in some cases to indicate a dependency or connection.

[0033] Furthermore, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts.

[0034] The technical solutions in this application will now be clearly and completely described with reference to the accompanying drawings.

[0035] Referring to Figures 1 to 4, this application first provides an embodiment of a flip-top packaging box, which includes:

[0036] The system comprises a first cover 01, a second cover 02, and a connecting structure 03. The first cover 01 is foldably connected to the second cover 02 via the connecting structure 03. The connecting structure 03 has a fold line 04, and protrusions 05 and recesses 06 are respectively provided on both sides of the fold line 04. When the first cover 01 and the second cover 02 are closed together, the protrusions 05 are embedded in the recesses 06 to form a sealing structure.

[0037] The flip-top packaging box embodiment provided in this example mainly consists of three parts: a first cover 01, a second cover 02, and a connecting structure 03. The following is a detailed description of this embodiment:

[0038] First Lid 01: This is a lid for the packaging box, used to cover and protect the contents inside the box.

[0039] The first cover 01 can be rectangular, square, or other suitable shapes, depending on the design and purpose of the packaging box.

[0040] Second cover 02: The second cover 02 is similar to the first cover 01, and is also used to cover and protect the contents inside the box.

[0041] The shape and size of the second cover 02 match those of the first cover 01 to ensure that a complete closed structure can be formed in the closed state, and a certain amount of storage space can be created.

[0042] Connection structure 03: Connection structure 03 is a key structure in this embodiment, used to connect the first cover 01 and the second cover 02, enabling them to close and open by folding. A detailed description follows:

[0043] Fold line 04: Fold line 04 is provided on the connecting structure 03 and is the fold line 04 between the first cover 01 and the second cover 02. The presence of fold line 04 allows the first cover 01 and the second cover 02 to fold around fold line 04. Fold line 04 can be a pre-pressed or shaped recess, making the material easy to bend at this position.

[0044] Protrusion 05 and Recess 06: Protrusion 05 and recess 06 are respectively provided on both sides of the fold line 04. The protrusion 05 and recess 06 are complementary structures. When the first cover 01 and the second cover 02 are closed, the protrusion 05 is embedded in the recess 06, thereby forming a sealing structure.

[0045] Protrusion 05: can be a part that protrudes from the surface of the connecting structure 03, and can be strip-shaped, block-shaped or other shapes, as long as it can fit with the recess 06.

[0046] Recess 06: This is a recess 06 structure corresponding to the protrusion 05. It can be a groove used to accommodate the protrusion 05.

[0047] When the first cover 01 and the second cover 02 are open, they are connected by the connecting structure 03 and can be folded freely. When it is necessary to close the packaging box, the first cover 01 and the second cover 02 are folded together by the fold line 04, so that they align with each other. During the closing process, the protrusion 05 on the first cover 01 fits into the recess 06 on the second cover 02, forming a tight seal. This design not only ensures that the contents of the packaging box are safe and do not leak, but also prevents external contaminants from entering the box.

[0048] In this application, there may be multiple recesses 06 (e.g., two or three or more), such as multiple strip-shaped recesses 06 and corresponding number and shape-matched protrusions 05, thereby further improving the sealing effect.

[0049] In this application, there is no limitation on the upper and lower positions of the first cover 01 and the second cover 02. That is, the first cover 01 can be the upper cover or the lower cover of the packaging box, and the second cover 02 can also be the upper cover or the lower cover of the packaging box.

[0050] In this embodiment, the design of the protrusion 05 and the recess 06 ensures that the cover forms a tight seal when closed, protecting the contents of the box. The connecting structure 03 allows the first cover 01 and the second cover 02 to be easily folded, simplifying the opening and closing process of the packaging box. The connecting structure 03 eliminates the need for additional latches or adhesives, saving materials and costs. Using the connecting structure 03 provided in this application to connect the first cover 01 and the second cover 02 allows for convenient manufacturing through a single mold, simplifying the production process, reducing the number of molds and production steps, and thus lowering production costs. The packaging box provided in this application achieves a flip-top connection while ensuring a tight seal, demonstrating excellent applicability.

[0051] In an optional embodiment, the first cover 01, the second cover 02, and the connecting structure 03 are formed in one piece using a single mold.

[0052] In an optional embodiment, the first lid 01, the second lid 02, and the connecting structure 03 of the flip-top packaging box are formed in one piece using a single mold. This integral molding method ensures a tight connection and consistency between the parts, thereby improving the strength and durability of the packaging box. The mold may include the shapes of the first lid 01 and the second lid 02, while reserving a mold structure for the connecting structure 03 between them. Materials suitable for mold forming, such as plastics, cardboard, or other composite materials, can be used, possessing sufficient strength and processability. The material has good molding properties, enabling it to be pressed or injection molded in a mold.

[0053] Referring to Figure 3, in an optional embodiment, the recess 06 is hollowed out with an elongated through hole 07.

[0054] In this embodiment, the recessed portion 06 has an elongated through hole 07, that is, there is an elongated opening at the location of the recessed portion 06. The through hole can be rectangular, elliptical, or other suitable elongated shapes, and the specific shape can be adjusted according to design requirements.

[0055] The elongated through-hole 07 design makes the recessed portion 06 more flexible when folding. Because the through-hole reduces the material thickness, less force is required for folding. This design provides greater flexibility at the fold line 04 of the connecting structure 03, making it easier to fold the first cover 01 and the second cover 02 along the fold line 04.

[0056] Referring to Figures 1 and 5, in an optional embodiment, a barrier 08 is provided at the edge of the first cover 01, and a groove or protrusion is provided on the inner surface of the barrier 08. A flange 09 is provided on the second cover 02. When the first cover 01 and the second cover 02 are closed, the flange 09 of the second cover 02 is engaged in the groove or abuts against the protrusion. In this application, Figure 3 uses the protrusion 10 as an example for illustration.

[0057] In this embodiment, a retaining wall 08 is provided at the edge of the first cover 01. The retaining wall 08 is a frame structure that stands upright along the edge of the cover, surrounding the entire perimeter of the cover. The height of the retaining wall 08 can be adjusted as needed to provide sufficient protection and sealing performance. The inner surface of the retaining wall 08 is provided with grooves or protrusions, which are used to mate with the flange 09 of the second cover 02.

[0058] Groove: If a groove is provided on the inner surface of the enclosure 08, then this groove will be used to accommodate the flange 09 on the second cover 02.

[0059] Protrusion: If a protrusion 10 is provided on the inner surface of the enclosure 08, then the protrusion 10 will be used to abut against the flange 09 on the second cover 02.

[0060] The second cover 02 is provided with a flange 09, which is a strip-shaped structure protruding along the edge of the cover. The position and shape of the flange 09 match the groove or protrusion on the first cover 01 to ensure a tight fit when closed.

[0061] The design of the retainer 08 and flange 09 allows the first cover 01 and the second cover 02 to form a tighter seal when closed. The engagement of the groove and flange 09 (or the contact between the protrusion 10 and flange 09) further enhances the seal, preventing air, moisture, or dust from entering the packaging box. The retainer 08 provides additional support and protection, making the packaging box more robust overall. The engagement of flange 09 with the groove or protrusion when closed increases the packaging box's resistance to deformation, improving its durability. The design of flange 09 and groove (or protrusion) makes it easier for users to align and operate when closing and opening the packaging box, improving ease of use. This design avoids accidental operation and ensures correct locking every time the box is closed.

[0062] Referring to Figure 6, the inner wall of the first cover 01 is bent outward at the edge to form a first abutting surface 11, and the inner wall of the second cover 02 is bent outward at the edge to form a second abutting surface 12. When the first cover 01 and the second cover 02 are closed, the first abutting surface 11 and the second abutting surface 12 are tightly fitted together.

[0063] In a further embodiment, the design of the first cover 01 and the second cover 02 is optimized to enhance the tightness of the closure and the overall stability of the packaging. Specifically, the inner wall of the first cover 01 is bent outward at its edge to form a first abutment surface 11, and the inner wall of the second cover 02 is bent outward at its edge to form a second abutment surface 12. When the first cover 01 and the second cover 02 are closed, these two abutment surfaces fit tightly together. This design not only improves the sealing performance but also enhances the structural strength of the packaging.

[0064] For the first cover 01:

[0065] A retaining wall 08 is provided at the edge of the first cover 01. The retaining wall 08 is a frame structure that stands upright along the edge of the cover and surrounds the entire perimeter of the cover.

[0066] The inner surface of the enclosure 08 has grooves or protrusions for engaging with the flange 09 on the second cover 02. The inner wall of the first cover 01 is bent outward at the edge to form a first abutting surface 11. The first abutting surface 11 is a flat surface for tightly fitting with the second abutting surface 12 of the second cover 02.

[0067] For the second cover 02:

[0068] The second cover 02 has a flange 09, a strip-like structure protruding along the edge of the cover, for engaging with a groove or protrusion on the first cover 01. The inner wall of the second cover 02 is bent outward at the edge to form a second abutment surface 12. The second abutment surface 12 corresponds to the first abutment surface 11 of the first cover 01, ensuring a tight fit when closed.

[0069] The tight fit between the first contact surface 11 and the second contact surface 12 forms an additional sealing layer, further enhancing the sealing effect of the packaging box. This design effectively prevents air, moisture, and dust from entering the packaging box, protecting the contents. It also prevents leakage of the packaging box's contents.

[0070] In this optional embodiment, by providing an outwardly bent first abutment surface 11 and abutment surface 12 at the inner wall edges of the first cover 01 and the second cover 02, respectively, and by ensuring that these two abutment surfaces are in surface contact, this embodiment significantly enhances the sealing performance and structural strength of the packaging box. This design fills the gap at the contact point between the first cover 01 and the second cover 02, ensuring a sealing effect and making it suitable for various high-requirement packaging scenarios.

[0071] Based on the structure in this optional embodiment, the first cover 01 in this application can be selected as the upper cover. When the first cover 01 is the upper cover, the flange 09 of the second cover 02 will be inserted into the enclosure 08 of the first cover 01. That is, the enclosure 08 is on the outer side and the flange 09 is on the inner side. When closed, the edge of the first cover 01 will cover the edge of the second cover 02.

[0072] Referring to Figure 3, in an optional embodiment, the connecting structure 03 has inward chamfers 13 on both sides.

[0073] In this embodiment, inward chamfers 13 are provided on both sides of the connecting structure 03. The chamfers 13 make the lid easier to fold. The chamfers 13 effectively prevent the lid from springing back due to internal stress after folding, ensuring that the box can be closed stably.

[0074] Referring to Figure 1, in an optional embodiment, the first cover 01 and the second cover 02 are provided with a plurality of reinforcing ribs 14.

[0075] In this embodiment, the reinforcing ribs 14 can be located on the inner surfaces of the first cover 01 and the second cover 02, along the edges of the box or the supporting parts of the box. They can be distributed around the perimeter of the cover or along the key supporting parts on the inner side of the cover. The reinforcing ribs 14 can be strip-shaped, cylindrical, or other shapes, and their specific shape and size can be determined according to the specific design requirements of the packaging box. Their size can be taken into account to provide sufficient support while minimizing the increase in the overall weight of the box. The main function of the reinforcing ribs 14 is to enhance the structural strength and stability of the box, enabling it to better withstand external pressure and impact. Especially during transportation and storage, the reinforcing ribs 14 can effectively prevent the box from deforming or breaking. The reinforcing ribs 14 can reduce the risk of deformation caused by repeated opening and closing of the box during long-term use, extending its service life. When packaging important items, the reinforcing ribs 14 can effectively prevent the box from collapsing or being damaged under external impact.

[0076] Referring to Figure 6, in an optional embodiment, the enclosure 08 is bent outward to form a contact surface 15 for contact.

[0077] In this embodiment, the enclosure 08 is part of the first cover 01 and can be disposed on the edge of the first cover 01 to enhance the structural stability and sealing of the box. The main purpose of bending the enclosure 08 outward to form the contact surface 15 is to provide a safe and easy-to-use contact point, preventing users from directly contacting any sharp edges that the enclosure 08 may have.

[0078] In this embodiment, the contact surface 15 is formed by bending the enclosure 08 outward. This structure does not require additional adhesive or fixing structures, which is very advantageous for one-time molding using a mold.

[0079] To better illustrate the embodiments in this application, two alternative embodiments are provided below:

[0080] Example 1:

[0081] An embodiment of a flip-top packaging box, the embodiment comprising:

[0082] The system comprises a first cover 01, a second cover 02, and a connecting structure 03. The first cover 01 is foldably connected to the second cover 02 via the connecting structure 03. The connecting structure 03 has a fold line 04, with a protrusion 05 and a recess 06 on each side. When the first cover 01 and the second cover 02 are closed, the protrusion 05 is embedded in the recess 06 to form a sealing structure. The first cover, the second cover, and the connecting structure are formed in one piece using a single mold. The recess 06 has an elongated through hole 07. The connecting structure 03 has inwardly chamfered corners 13 on both sides. The recess 06 includes three grooves.

[0083] Example 2:

[0084] An embodiment of a flip-top packaging box, the embodiment comprising:

[0085] The system comprises a first cover 01, a second cover 02, and a connecting structure 03. The first cover 01 is foldably connected to the second cover 02 via the connecting structure 03. The connecting structure 03 has a fold line 04, and protrusions 05 and recesses 06 are respectively provided on both sides of the fold line 04. When the first cover 01 and the second cover 02 are closed together, the protrusions 05 are embedded in the recesses 06 to form a sealing structure. The first cover 01 has a retaining wall 08 at its edge, and the inner surface of the retaining wall 08 has a groove or a protrusion. The second cover 02 has a flange 09. When the first cover 01 and the second cover 02 are closed, the flange 09 of the second cover 02 is engaged in the groove or abuts against the protrusion. The inner wall of the first cover 01 is bent outward at its edge to form a first abutting surface 11, and the inner wall of the second cover 02 is bent outward at its edge to form a second abutting surface 12. When the first cover 01 and the second cover 02 are closed, the first abutting surface 11 and the second abutting surface 12 are tightly fitted together. The retaining wall 08 is bent outward to form a contact surface 15 for contact.

[0086] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flip-top packaging box, wherein, include: The system comprises a first cover, a second cover, and a connecting structure. The first cover is foldably connected to the second cover via the connecting structure. The connecting structure has a fold line, and protrusions and recesses are respectively provided on both sides of the fold line. When the first cover and the second cover are closed together, the protrusions are embedded in the recesses to form a sealing structure.

2. The flip-top packaging box according to claim 1, wherein, The first cover, the second cover, and the connecting structure are formed in one piece using a single mold.

3. The flip-top packaging box according to claim 1, wherein, The recessed area has an elongated through hole.

4. The flip-top packaging box according to claim 3, wherein, The elongated through hole can be a rectangular through hole or an elliptical through hole.

5. The flip-top packaging box according to claim 1, wherein, The connecting structure has three elongated recesses.

6. The flip-top packaging box according to claim 1, wherein, The first cover has a barrier at its edge, and the inner surface of the barrier has a groove or a protrusion. The second cover has a flange. When the first cover and the second cover are closed, the flange of the second cover is engaged in the groove or abuts against the protrusion.

7. The flip-top packaging box according to claim 6, wherein, The inner wall of the first cover is bent outward at the edge to form a first abutting surface, and the inner wall of the second cover is bent outward at the edge to form a second abutting surface. When the first cover and the second cover are closed, the first abutting surface and the second abutting surface are tightly fitted together.

8. The flip-top packaging box according to claim 6, wherein, The first cover is the upper cover, and the second cover is the lower cover.

9. The flip-top packaging box according to any one of claims 1 to 8, wherein, The connecting structure has inward chamfers on both sides.

10. The flip-top packaging box according to any one of claims 1 to 8, wherein, The first cover and the second cover are provided with multiple reinforcing ribs.

11. The flip-top packaging box according to claim 10, wherein, The reinforcing ribs are provided on the inner surfaces of the first cover and the second cover.

12. The flip-top packaging box according to claim 10, wherein, The reinforcing ribs are strip-shaped or cylindrical.

13. The flip-top packaging box according to claim 6, wherein, The fencing bends outward to form a contact surface for contact.

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