A folding waterproof carton
By incorporating a waterproof inner bag and a snap-fit structure inside the cardboard box, combined with external Velcro closures, the problems of insufficient waterproofing and structural instability inside the box are solved, resulting in better waterproofing and stability, and improving the box's lifespan and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG QIFENG PACKAGING CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-26
Smart Images
Figure CN224410005U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cardboard box technology, and in particular to a foldable waterproof cardboard box. Background Technology
[0002] Cardboard boxes are the most widely used packaging products, typically used as wrappers for goods or as protective outer layers for items. Depending on the materials used, cardboard boxes include corrugated cardboard boxes and single-layer cardboard boxes. They are ubiquitous in packaging, transportation, and daily life. Folding cardboard boxes are a type of cardboard box, convenient for transportation due to their foldable and storable nature. With societal development, the uses of cardboard boxes are becoming increasingly widespread, necessitating further improvements to adapt them to different environments. Sometimes, waterproofing is also required.
[0003] Foldable waterproof cardboard boxes achieve their waterproof effect by attaching a waterproof film to the outside of the box. When items are placed inside the box, the film protects the box from external moisture and prevents it from affecting the contents.
[0004] However, existing cardboard boxes usually only have a waterproof film on the outside, and there is no effective waterproofing measure inside. The items inside can affect the cardboard box, causing it to soften and break from the inside. In addition, the cardboard box has no external fixing structure, so it will loosen when closed, causing items to fall out. Therefore, a foldable waterproof cardboard box is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a foldable waterproof cardboard box, which aims to improve the problem that the cardboard box in the prior art does not have waterproof measures inside, thus affecting the waterproof effect.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A foldable waterproof cardboard box includes a box body, an outer box cover at the top of the box body, an outer bottom plate at the bottom of the box body, a waterproof inner bag installed inside the box body, an installation component between the waterproof inner bag and the box body, and a fixing component at the top of the box body.
[0008] The installation assembly includes multiple fixing blocks, all of which are fixedly connected to the inside of the box. Multiple installation blocks are fixedly connected to the outside of the waterproof inner bag. The multiple installation blocks are slidably connected inside the multiple fixing blocks. Each of the multiple installation blocks has a through groove. Two locking blocks are slidably connected inside the through groove. A spring is provided between the two locking blocks. The two locking blocks are locked inside the fixing blocks.
[0009] As a further description of the above technical solution:
[0010] The fixing component includes a fixing plate, which is fixedly connected to one side of the box body. A strap is fixedly connected to the top of the fixing plate, and a Velcro strap is fixedly connected to one end of the strap. A Velcro strap is fixedly connected to the other side of the box body.
[0011] As a further description of the above technical solution:
[0012] Each of the fixing blocks has a sliding groove inside, and the mounting block is located inside the sliding groove;
[0013] As a further description of the above technical solution:
[0014] A movable plate is fixedly connected to the inner side of each of the two card blocks, and the spring is located inside the two movable plates;
[0015] As a further description of the above technical solution:
[0016] A baffle is fixedly connected inside the through groove, and the baffle is fixedly connected to the middle of the spring;
[0017] As a further description of the above technical solution:
[0018] The bottom of the box is provided with an inner bottom plate, which is located inside the outer bottom plate;
[0019] As a further description of the above technical solution:
[0020] The inner bottom plate has a mounting groove in the middle, and the outer bottom plate is snapped into the mounting groove.
[0021] As a further description of the above technical solution:
[0022] The top of the box is provided with an inner box cover, which is located inside the outer box cover.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, by setting a waterproof inner bag inside the box and adopting a sliding snap-fit structure in which the fixing block and the mounting block cooperate, the inner bag can be quickly installed and stably positioned; at the same time, the snap-fit block on the mounting block automatically snaps into the fixing block under the action of the spring, forming a reliable connection, which not only ensures that the waterproof inner bag will not shift or fall off during use, but also facilitates disassembly, cleaning or replacement, thereby improving the reusability and maintenance convenience of the carton.
[0025] 2. In this utility model, the straps and Velcro structure between the outer cover and the box body can effectively press and seal, preventing external moisture from seeping in when the outer cover is opened, and further enhancing the overall waterproof performance. The bottom of the box body adopts a nested design of the outer bottom plate and the inner bottom plate, and achieves precise positioning and stable snap-fit through the installation groove, which not only enhances the bottom load-bearing capacity and structural stability, but also effectively blocks the upward penetration of ground moisture. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of a foldable waterproof cardboard box proposed in this utility model;
[0027] Figure 2 This is a schematic diagram of the strap structure of a foldable waterproof cardboard box proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of the Velcro closure 2 of a foldable waterproof cardboard box proposed in this utility model.
[0029] Figure 4 This is a cross-sectional view of the mounting block for a foldable waterproof cardboard box proposed in this utility model.
[0030] Figure 5 This is a schematic diagram of the outer bottom plate of a foldable waterproof cardboard box proposed in this utility model.
[0031] Legend:
[0032] 1. Case body; 2. Outer case cover; 3. Fixing plate; 4. Straps; 5. Inner case cover; 6. Waterproof inner bag; 7. Velcro strap one; 8. Mounting block; 9. Fixing block; 10. Outer bottom plate; 11. Inner bottom plate; 12. Mounting groove; 13. Sliding groove; 14. Through groove; 15. Locking block; 16. Moving plate; 17. Baffle; 18. Spring; 19. Velcro strap two. Detailed Implementation
[0033] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5This utility model provides an embodiment of a foldable waterproof cardboard box, including a box body 1. The box body 1 is initially stored and transported in a flat form, which greatly saves storage space. The box body 1 unfolds along the preset fold lines, which allows the side panels to stand up and form a rectangular cavity structure. An outer box cover 2 is provided on the top of the box body 1. After the items are packed inside the box body 1, the outer box cover 2 is closed to seal the cardboard box. An outer bottom plate 10 is provided at the bottom of the box body 1. The outer bottom plate 10 is connected to the inner bottom plate 11 by plugging or connecting to form the bottom support surface of the complete box body 1, ensuring the overall structure is stable and has basic load-bearing and stacking capabilities. A waterproof inner bag 6 is installed inside the box body 1. The waterproof inner bag 6 is made of flexible polymer material and has excellent waterproof and moisture-proof performance. It can effectively isolate liquid penetration and protect the internal items from moisture. An installation component is provided between the waterproof inner bag 6 and the box body 1. A fixing component is provided on the top of the box body 1.
[0035] The mounting assembly includes multiple fixing blocks 9, all fixedly connected to the inside of the housing 1. Multiple mounting blocks 8 are fixedly connected to the outside of the waterproof inner bag 6. The mounting blocks 8 are slidably connected inside the fixing blocks 9. The number and position of the mounting blocks 8 correspond one-to-one with the fixing blocks 9 on the inner wall of the housing 1, distributed in the corner areas of the four side walls to achieve uniform force distribution. Each mounting block 8 has a through groove 14, inside which two locking blocks 15 are slidably connected. The two locking blocks 15 move within the mounting block 8 through the through groove, while the through groove 14 restricts the movement direction of the two locking blocks 15. A spring 18 is provided between the locking blocks 15 to compress them, allowing them to return to their original position after movement. The two locking blocks 15 engage inside the fixing blocks 9, thus fixing the mounting blocks 8 inside the fixing blocks 9. Each part is provided with a sliding groove 13, and the mounting block 8 is located inside the sliding groove 13. The design of the sliding groove 13 ensures the guidance and stability of the mounting block 8 during the insertion process, avoiding deviation or jamming. The inner sides of the two locking blocks 15 are fixedly connected to the moving plates 16, and the springs 18 are located inside the two moving plates 16. The user can press the moving plates 16 to make the two locking blocks 15 retract inward against the elastic force of the springs 18, thereby releasing the locking state with the fixing block 9 and realizing the quick disassembly of the waterproof inner bag 6. The through groove 14 is fixedly connected to the baffle 17, which is fixedly connected to the middle of the spring 18. The baffle 17 is used to fix the position of the spring 18 and prevent the spring 18 from moving, affecting the position and rebound effect of the locking blocks 15. By adding a waterproof inner bag 6 inside the carton, the waterproof effect inside the carton is improved. At the same time, the waterproof inner bag 6 is fixed with the mounting components, which facilitates the cleaning, replacement or recycling of the inner bag, improving the maintainability and service life of the carton.
[0036] Reference Figure 2 and Figure 3The fixing component includes a fixing plate 3, which is fixedly connected to one side of the box body 1. A strap 4 is fixedly connected to the top of the fixing plate 3. The strap 4 is fixed with the fixing plate 3. A Velcro 7 is fixedly connected to one end of the strap 4. A Velcro 19 is fixedly connected to the other side of the box body 1. The Velcro 7 at one end of the strap 4 is adhered to the Velcro on the other side of the box body 1. When the outer box cover 2 is closed, the strap 4 is wrapped around the outside of the box body 1 and the Velcro is adhered. Continuous tension is applied to make the outer box cover 2 tightly pressed onto the box body 1. The fixing component can effectively prevent the box cover from being accidentally opened during transportation due to vibration, tilting or rain erosion. At the same time, it reduces the risk of water seeping in along the gaps and improves the overall waterproof level.
[0037] Reference Figure 1 and Figure 5 The bottom of the box 1 is provided with an inner bottom plate 11, which is located inside the outer bottom plate 10. The outer bottom plate 10 and the inner bottom plate 11 are connected by a nesting method. An installation groove 12 is opened in the middle of the inner bottom plate 11, and the outer bottom plate 10 is snapped into the installation groove 12. The outer bottom plate 10 is snapped into the installation groove 12 to form a stable nesting structure, which enhances the overall rigidity and pressure resistance of the bottom, prevents the bottom from collapsing, and also prevents ground moisture from seeping upward through the seams. The top of the box 1 is provided with an inner box cover 5, which is located inside the outer box cover 2. When items are placed in, the inner box cover 5 is closed first to form the first top fixing barrier, and then the outer box cover 2 is closed to provide the second layer of protection and improve the top waterproof performance.
[0038] Working principle: First, before use, the carton is stored or transported in a flat state. When in use, the carton body 1 is unfolded into a three-dimensional structure through preset creases. The outer bottom plate 10 is fixed to the mounting groove 12 in the middle of the inner bottom plate 11 via an interlocking method, forming the bottom of the carton. At this time, the carton body 1 is in an open state. Then, the mounting block 8 on the outside of the waterproof inner bag 6 is aligned with the sliding groove 13 in the fixing block 9 on the inner wall of the carton body 1 and pushed downwards along the sliding groove 13. During the pushing process, the locking block 15 on the mounting block 8 is squeezed by the inner wall of the fixing block 9 and retracts into the through groove 14, compressing the spring 18 to store energy. When the mounting block 8 is fully inserted, the locking block 15 automatically pops out under the elastic force of the spring 18, locking into the locking area inside the fixing block 9, thus locking the mounting block 8 and the fixing block 9. This process requires no tools, is easy to operate, and multiple mounting points are fixed simultaneously, ensuring that the waterproof inner bag 6 is stably fitted inside the carton body 1 and will not shift or fall off during transportation.
[0039] Next, place the items to be packaged into the waterproof inner bag 6, then close the inner box lid 5 onto the inside of the top of the box body 1 to form the first layer of top fixation. Then, close the outer box lid 2 to cover the entire box opening, forming the second layer of protection. Next, pull the strap 4 out from one end of the fixing plate 3, wrap it around the outside of the box body 1, and attach the Velcro 7 at the end to the Velcro 19 on the other side of the box body 1. The tension applied by the strap 4 makes the outer box lid 2 press tightly against the box body 1, effectively preventing the lid from opening due to vibration or tilting, and improving the overall sealing and waterproof rating.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foldable waterproof cardboard box, comprising a box body (1), characterized in that: The box (1) is provided with an outer box cover (2) on the top, an outer bottom plate (10) on the bottom, a waterproof inner bag (6) installed inside the box (1), an installation component is provided between the waterproof inner bag (6) and the box (1), and a fixing component is provided on the top of the box (1). The installation assembly includes multiple fixing blocks (9), which are fixedly connected to the inside of the box (1). Multiple mounting blocks (8) are fixedly connected to the outside of the waterproof inner bag (6). The mounting blocks (8) are slidably connected inside the multiple fixing blocks (9). Each mounting block (8) has a through groove (14) inside. Two locking blocks (15) are slidably connected inside the through groove (14). A spring (18) is provided between the two locking blocks (15). The two locking blocks (15) are engaged inside the fixing blocks (9).
2. A foldable waterproof cardboard box according to claim 1, characterized in that: The fixing component includes a fixing plate (3), which is fixedly connected to one side of the box (1). A strap (4) is fixedly connected to the top of the fixing plate (3). A Velcro strap (7) is fixedly connected to one end of the strap (4), and a Velcro strap (19) is fixedly connected to the other side of the box (1).
3. A foldable waterproof cardboard box according to claim 1, characterized in that: Each of the fixing blocks (9) has a groove (13) inside, and the mounting block (8) is located inside the groove (13).
4. A foldable waterproof cardboard box according to claim 3, characterized in that: The inner sides of the two card blocks (15) are fixedly connected to the movable plates (16), and the spring (18) is located inside the two movable plates (16).
5. A foldable waterproof cardboard box according to claim 4, characterized in that: A baffle (17) is fixedly connected inside the through groove (14), and the baffle (17) is fixedly connected to the middle part of the spring (18).
6. A foldable waterproof cardboard box according to claim 1, characterized in that: The bottom of the box (1) is provided with an inner bottom plate (11), which is located inside the outer bottom plate (10).
7. A foldable waterproof cardboard box according to claim 6, characterized in that: The inner bottom plate (11) has a mounting groove (12) in the middle, and the outer bottom plate (10) is snapped into the mounting groove (12).
8. A foldable waterproof cardboard box according to claim 1, characterized in that: The top of the box (1) is provided with an inner box cover (5), which is located inside the outer box cover (2).