A type of breakage-resistant dual-space ESP foam box

By introducing positioning shells, positioning blocks, springs, and magnetic sealing design into the ESP foam box, the problems of unstable partitions and easily damaged edges and corners are solved, achieving stable buffering of the partitions and protection of the box body, thus improving ease of use and safety.

CN224577157UActive Publication Date: 2026-07-31HANGZHOU HEXIN NEW ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU HEXIN NEW ENERGY CO LTD
Filing Date
2025-09-01
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The existing ESP foam boxes have unstable partition positions that rely on items for support, making them inconvenient to use; the corners lack protection and are easily damaged, affecting safety.

Method used

The structure employs a positioning shell, positioning block, spring, rubber pad, contact plate, honeycomb hole, corrugated surface, and protective seat, combined with installation components and magnetic sealing box design, to ensure the stability of the partition, provide cushioning and edge protection, and prevent dragging damage.

Benefits of technology

The partitions are positioned stably, providing effective cushioning to prevent damage to items, improving the practicality and safety of the foam box, simplifying the sealing process, and maintaining a stable environment inside the box.

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Abstract

This utility model relates to a breakage-resistant dual-space ESP foam box, comprising a foam box body, a lid on the top of the foam box body, a partition inside the foam box body, a positioning block fixedly connected to the outer wall of the partition, a positioning shell fixedly connected to the inner wall of the foam box body, a spring fixedly connected to the side wall of the partition, a first rubber pad fixedly connected to the side wall of the partition, a second rubber pad fixedly connected to the side wall of the partition, and a contact plate fixedly connected to the end of the spring. In this utility model, by incorporating the positioning shell, positioning block, spring, and other structures, the partition provides a cushioning function, reducing the risk of simultaneous damage to items in both spaces due to impact. It also protects the most vulnerable corners of the foam box and helps prevent dragging and breakage of the foam box, thus improving the practicality and safety of the foam box.
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Description

Technical Field

[0001] This utility model relates to the field of ESP foam boxes, and more particularly to a breakage-resistant dual-space ESP foam box. Background Technology

[0002] ESP foam boxes are packaging containers made of expandable polystyrene. ESP foam boxes are made by mixing a foaming agent with a polymer and then foaming it through a specific process. First, the polystyrene granules are heated and pre-foamed, and then heated and molded in a mold to form white objects of various shapes and sizes. ESP foam boxes have a low thermal conductivity, making them suitable for transporting items that need to maintain a stable temperature. They can effectively absorb and disperse external forces, protecting the contents from damage.

[0003] In order to effectively separate items inside the box, existing ESP foam boxes use support frames and partitions to divide one space inside the foam box into two spaces, and the two spaces can hold two different items separately, so that the items placed inside the foam box will not mix together.

[0004] However, the current partitions are in a free state, with no connection between the partitions and the box. The position of the partitions is unstable and can only be supported by items. This means that there must be enough items inside the box to keep the partitions stable, which is inconvenient to use. If there are not enough items, the partitions will not work and may even affect the safety of the items inside.

[0005] Foam boxes are prone to bottom damage and corner collisions when dragged after loading. Existing foam boxes lack protection at the corners after being formed as a whole, which reduces the safety of the foam box. Therefore, a double-space ESP foam box that is not damaged is proposed to solve the above problems. Summary of the Invention

[0006] To overcome the above shortcomings, this utility model provides a breakable double-space ESP foam box, which aims to improve the existing technology where the double-space ESP foam box is simply divided, resulting in a lack of cushioning function, and the lack of protection at the corners of the foam box increases the breakage rate during movement.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a breakage-resistant dual-space ESP foam box, comprising a foam box body, a lid on the top of the foam box body, a partition inside the foam box body, a positioning block fixedly connected to the outer wall of the partition, a positioning shell fixedly connected to the inner wall of the foam box body, springs fixedly connected to both side walls of the partition, rubber pad one and rubber pad two fixedly connected to the periphery of both sides of the partition, a contact plate fixedly connected to the end of the spring, a corrugated surface on the side wall of the contact plate, honeycomb holes through the contact plate, a protective seat on the outer wall of the foam box body, and the protective seat and the foam box body being installed by an installation assembly.

[0008] Preferably, the inner surface of the positioning shell is adapted to the outer wall of the positioning block. The positioning block and the positioning shell cooperate with each other to limit the position of the partition and maintain its stability. The partition can perform its intended function without relying on the support of the object.

[0009] Preferably, the corrugated surface is formed on the outer wall of the contact plate on the side away from the partition.

[0010] Preferably, the mounting assembly includes a socket, a rod is fixedly connected to the inner wall of the socket, a fixing cylinder is fixedly connected to the inner surface of the protective base, and an overflow hole is provided through the surface of the fixing cylinder.

[0011] Preferably, the insertion hole is located on the bottom outer wall of the foam box body, the outer wall of the insertion rod is adapted to the inner surface of the fixing cylinder, and the outer surface of the fixing cylinder is adapted to the inner wall of the insertion hole.

[0012] Preferably, the bottom of the protective seat is provided with a ball groove, and the inner wall of the ball groove is rotatably connected with a ball.

[0013] Preferably, a soft magnetic strip is fixedly connected to the top of the foam box body, and a magnetic sheet is magnetically connected to the top of the soft magnetic strip.

[0014] Preferably, the top of the magnetic sheet is fixedly connected to the bottom of the box cover.

[0015] This utility model has the following beneficial effects: 1. In this utility model, by combining a positioning shell, positioning block, spring, rubber pad, contact plate, honeycomb hole, corrugated surface, protective seat and installation components, the conventional foam box is not simply divided into two spaces. The partition has a buffer function, which reduces the impact on the foam box and prevents the items in both spaces from being damaged at the same time. It also protects the corners of the foam box that are most vulnerable to damage, and helps the foam box move without dragging it and causing damage, thus improving the practicality and safety of the foam box.

[0016] 2. In this utility model, by setting up a soft magnetic strip and magnetic sheet with magnetic attraction, compared with the traditional tape sealing method, there is no need to use tools such as scissors or box sealers to easily open and close the box lid. The operation is simple and quick while maintaining the stability of the internal environment of the box. Attached Figure Description

[0017] Figure 1 This is a side view of the main structure of a breakage-resistant dual-space ESP foam box proposed in this utility model; Figure 2 This is a bottom view of the main structure of a breakage-resistant dual-space ESP foam box proposed in this utility model. Figure 3 This utility model proposes a breakage-resistant dual-space ESP foam box. Figure 2 Enlarged view of region A in the middle; Figure 4 This is a partial cross-sectional schematic diagram of the protective base structure of a breakage-resistant dual-space ESP foam box proposed in this utility model; Figure 5 This is a top view schematic diagram of the foam box body structure of a breakage-resistant dual-space ESP foam box proposed in this utility model; Figure 6 This is a top view of the partial structural separation of a breakage-resistant dual-space ESP foam box proposed in this utility model.

[0018] Legend: 1. Foam box body; 2. Box lid; 3. Partition; 4. Positioning shell; 5. Positioning block; 6. Spring; 7. Rubber pad one; 8. Rubber pad two; 9. Contact plate; 10. Honeycomb hole; 11. Corrugated surface; 12. Protective seat; 13. Insertion hole; 14. Insertion rod; 15. Fixing cylinder; 16. Glue overflow hole; 17. Ball groove; 18. Ball bearing; 19. Soft magnetic strip; 20. Magnetic sheet. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Reference Figures 1-3This utility model provides an embodiment of a breakable double-space ESP foam box, comprising a foam box body 1, a lid 2 on the top of the foam box body 1, a partition 3 inside the foam box body 1, positioning blocks 5 fixedly connected to the outer wall of the partition 3, the positioning blocks 5 being located in pairs on both sides of the outer wall of the partition 3, and positioning shells 4 fixedly connected to the inner wall of the foam box body 1, the positioning shells 4 being arranged in several sets, and the several sets of positioning shells 4 being arranged in pairs in a mirror image on the inner wall of the foam box body 1, each set of positioning shells 4 allowing the two sets of positioning blocks 5 to be inserted into the partition 3 for... After the partition 3 is fixed inside the foam box body 1, it divides the foam box body 1 into two spaces. A spring 6 is fixedly connected to the side wall of the partition 3. Rubber pad 7 is fixedly connected to three sides of the partition 3, connecting the partition 3 and the contact plate 9 in a Z-shape, allowing for bending. Rubber pad 8 is fixedly connected to the three sides of the other side of the partition 3, also connecting the partition 3 and the contact plate 9 in a Z-shape, allowing for bending. Rubber pads 1 and 2 surround the three sides of the partition, shielding the spring and ensuring safety. A contact plate 9, made of rubber, is fixedly connected to the end of the spring 6. The contact plate 9 has a corrugated surface 11 on its side wall and honeycomb holes 10 extending through it. Protective seats 12, four sets of which are located at the four corners of the foam box body 1, are provided on the outer wall of the foam box body 1. The protective seats 12 are made of rigid plastic.

[0021] Reference Figures 4-6 The inner surface of the positioning shell 4 is adapted to the outer wall of the positioning block 5. The corrugated surface 11 is formed on the outer wall of the contact plate 9 away from the partition 3. The corrugated surface 11 contacts the items placed inside the foam box body 1. The protective seat 12 is installed on the foam box body 1 through an installation assembly. The installation assembly includes a socket 13, a rod 14, a fixing cylinder 1, and an overflow hole 16. The socket 13 is formed on the bottom outer wall of the foam box body 1. The rod 14 is fixedly connected to the inner wall of the socket 13. The rod 14 is made of hard plastic, the same material as the protective seat 12, to avoid adding extra weight to the overall foam box body 1. Meanwhile, to ensure the hardness requirement of the protective seat 12, the outer wall of the insertion rod 14 is adapted to the inner surface of the fixing cylinder 15. The fixing cylinder 15 is fixedly connected to the inner surface of the protective seat 12. The outer surface of the fixing cylinder 15 is adapted to the inner wall of the insertion hole 13. An overflow hole 16 is opened through the fixing cylinder 15. A ball groove 17 is opened at the bottom of the protective seat 12. Several sets of ball grooves 17 are provided, and the several sets of ball grooves 17 are arranged in a circumferential array with the center point of the fixing cylinder 15 as the center point. The ball groove 17 is set to a shape larger than a semi-circle, so that the ball 18 can be fitted inside it without falling off. The ball 18 is rotatably connected to the inner wall of the ball groove 17.

[0022] Reference Figure 2 and Figure 6A soft magnetic strip 19 is fixedly connected to the top of the foam box body 1. A magnetic sheet 20 is magnetically connected to the top of the soft magnetic strip 19. The top of the magnetic sheet 20 is fixedly connected to the bottom of the box cover 2. When the box cover 2 closes the foam box body 1, the magnetic sheet 20 can magnetically attract the soft magnetic strip 19. When the box cover 2 is closed and attracted, the magnetic attraction can effectively prevent moisture, dust and other pollutants in the outside air from entering the interior of the foam box body 1, thereby maintaining a relatively stable environment inside the box.

[0023] Working principle: Invert the foam box body 1 and inject adhesive into the insertion hole 13. Then, apply adhesive to the inner surface of the protective seat 12. Insert the fixing cylinder 15 into the insertion rod 14. Adhesive will overflow from the overflow hole 16. Fix the protective seat 12 to the corner of the foam box body 1. Insert the two sets of positioning blocks 5 into the corresponding two sets of positioning shells 4. The area of ​​the double space inside the foam box body 1 can be switched according to the volume of the items to be placed. After the items are placed on the left and right sides of the foam box body 1, the items will come into contact with the corrugated surface 11 and be compressed. The spring 6 will be compressed, and at the same time, the rubber pad 8 will be partially bent. After the items are placed, the lid 2 covers the foam box body 1, allowing the magnetic... The sheet 20 and the soft magnetic strip 19 are magnetically attracted. When the foam box body 1 is moved, the ball bearing 18 can roll inside the ball groove 17 to help the foam box body 1 move. This avoids the risk of bottom damage caused by dragging the foam box body 1 in the conventional way. At the same time, when the foam box body 1 is transported, the honeycomb holes 10 and the corrugated surface 11 of the contact plate 9, together with the rubber pad 7, the spring 6 and the rubber pad 8, can provide cushioning for the items. When the foam box body 1 is impacted, the air inside the honeycomb holes 10 deforms under the force. At the same time, the corrugated surface 11 disperses the external force to a larger area, thereby reducing local stress concentration and reducing the force of the impact force transmitted to the other space. The cushioning effect improves the stability of items placed in the two spaces.

[0024] 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 breakage-resistant dual-space ESP foam box, comprising a foam box body (1), wherein a lid (2) is provided on the top of the foam box body (1), characterized in that: The foam box body (1) is provided with a partition (3) inside. A positioning block (5) is fixedly connected to the outer wall of the partition (3). A positioning shell (4) is fixedly connected to the inner wall of the foam box body (1). Springs (6) are fixedly connected to both sides of the partition (3). Rubber pad one (7) and rubber pad two (8) are fixedly connected to both sides of the partition (3). A contact plate (9) is fixedly connected to the end of the spring (6). A wave surface (11) is provided on the side wall of the contact plate (9). A honeycomb hole (10) is opened through the contact plate (9). A protective seat (12) is provided on the outer wall of the foam box body (1). The protective seat (12) is installed with the foam box body (1) through an installation assembly.

2. The shatterproof dual-space ESP foam box according to claim 1, characterized in that: The inner surface of the positioning shell (4) is adapted to the outer wall of the positioning block (5).

3. The shatterproof dual-space ESP foam box according to claim 1, characterized in that: The wave surface (11) is formed on the outer wall of the contact plate (9) away from the partition (3).

4. The shatterproof dual-space ESP foam box according to claim 1, characterized in that: The mounting assembly includes a socket (13), the inner wall of which is fixedly connected to a rod (14), and the inner surface of the protective base (12) is fixedly connected to a fixing cylinder (15), the surface of which is provided with an overflow hole (16).

5. A breakage-resistant dual-space ESP foam box according to claim 4, characterized in that: The insertion hole (13) is located on the bottom outer wall of the foam box body (1). The outer wall of the insertion rod (14) is adapted to the inner surface of the fixing cylinder (15). The outer surface of the fixing cylinder (15) is adapted to the inner wall of the insertion hole (13).

6. The shatterproof dual-space ESP foam box according to claim 1, characterized in that: The bottom of the protective seat (12) is provided with a ball groove (17), and the inner wall of the ball groove (17) is rotatably connected with a ball (18).

7. The shatterproof dual-space ESP foam box according to claim 1, characterized in that: A soft magnetic strip (19) is fixedly connected to the top of the foam box body (1), and a magnetic sheet (20) is magnetically connected to the top of the soft magnetic strip (19).

8. A breakage-resistant dual-space ESP foam box according to claim 7, characterized in that: The top of the magnetic sheet (20) is fixedly connected to the bottom of the box cover (2).