A multi-layer composite mat structure and automotive epp tool box

Abstract

The utility model provides a kind of multilayer composite pad structure and automobile EPP tool box, it is related to automobile tool box technical field.Multilayer composite pad structure includes buffer pad, and buffer pad is sequentially stacked with surface layer, intermediate buffer layer and bottom layer from top to bottom, and it is fixedly connected between adjacent layers by adhesive, intermediate buffer layer is the net structure made of EPP foam, and the upper surface and the lower surface of net structure are all provided with the concave-convex grain of increasing bonding area, and automobile EPP tool box includes box body, and the inside of box body is fixedly provided with partition plate, and tool cavity is formed between partition plate and box body inner wall, and multilayer composite pad structure is embedded in tool cavity, and surface layer of multilayer composite pad structure is provided with tool groove.The utility model is by EPP box body and multilayer composite buffer pad structure, realizes the comprehensive efficient protection to internal tool, prolongs tool life and improves the use convenience of tool box.

Description

Technical Field

[0001] This utility model relates to the field of automotive toolbox technology, and in particular to a multi-layer composite pad structure and an automotive EPP toolbox. Background Technology

[0002] In the automotive industry and aftermarket, toolboxes are essential equipment for storing, carrying, and protecting various repair tools, precision instruments, and even spare parts.

[0003] Currently, traditional toolboxes are mainly made of metal or ordinary engineering plastics. Although metal toolboxes are sturdy, they have inherent disadvantages such as being too heavy, easily corroded and rusted, and prone to noise from collisions with tools when the vehicle is bumpy. Ordinary engineering plastic toolboxes, on the other hand, are not good at impact resistance and weather resistance, and are prone to aging, embrittlement, or even cracking after long-term use.

[0004] More importantly, the internal protection design of traditional toolboxes is generally weak. Their interiors are usually divided into spaces by simple plastic partitions, and the cushioning measures are limited to laying a layer of pearl cotton or EVA foam. This simple cushioning structure cannot effectively absorb and disperse energy when faced with the continuous vibration generated by the car in motion, the inertial impact of frequent starts and stops, and accidental collisions. As a result, the precision tools or vulnerable parts stored inside, such as multimeters, will collide with each other due to long-term vibration, causing them to loosen, become inaccurate in calibration, wear out, or even fail to function.

[0005] Meanwhile, toolboxes made of EPP material have begun to appear on the market. EPP material has the advantages of being lightweight, impact-resistant, and weather-resistant. However, the internal cushioning pads of existing EPP toolboxes often have a simple structure and weak interlayer bonding. They are prone to delamination after long-term use. Furthermore, their support and wear resistance are insufficient, making it impossible to provide adequate protection for heavy tools or tools with sharp edges, such as adjustable wrenches and electrician's knives.

[0006] Therefore, in order to address the above problems, the applicant needs to design a multi-layer composite pad structure and an automotive EPP toolbox to solve the problems. Utility Model Content

[0007] On one hand, this application provides a multi-layer composite pad structure, including a cushioning pad, wherein the cushioning pad is stacked from top to bottom with a top layer, an intermediate cushioning layer, a reinforcing layer, and a bottom layer, and adjacent layers are fixedly connected by an adhesive. The intermediate cushioning layer is an EPP foam layer with a mesh structure, and the upper and lower surfaces of the intermediate cushioning layer are provided with textured surfaces to increase the bonding area. The reinforcing layer is a three-layer composite structure, including an upper fiber cloth layer, an intermediate support foam layer, and a lower fiber cloth layer. The upper and lower fiber cloth layers are respectively bonded to the upper and lower surfaces of the intermediate support foam layer by an adhesive. The bottom layer is a silicone layer.

[0008] Preferably, the adhesive is an epoxy resin adhesive, which provides high strength and durable bonding, ensuring that the multilayer structure is not prone to delamination under vibration.

[0009] Preferably, the surface layer is microfiber leather, which has soft and wear-resistant properties and can effectively prevent the tool surface from being scratched or worn.

[0010] Preferably, the lower surface of the bottom layer is provided with anti-slip texture. The silicone bottom layer combined with the anti-slip texture enhances the stability of the cushioning pad and prevents the toolbox from causing the cushioning pad to slide during movement.

[0011] Preferably, in another aspect, this application also provides an automotive EPP toolbox with a multi-layer composite pad structure, including a box body, a partition plate fixedly disposed inside the box body, and a tool cavity formed between the partition plate and the inner wall of the box body, wherein the multi-layer composite pad structure is embedded in the tool cavity, and the surface layer of the multi-layer composite pad structure is provided with a tool groove.

[0012] Preferably, a perforated section is formed between the partition plate and the inner wall of the box, and a grid plate is fixedly provided on the bottom surface of the perforated section. The perforated section and the grid plate reduce the weight of the toolbox and provide ventilation and drainage functions to avoid corrosion caused by tools with oil.

[0013] Preferably, a positioning plate is snapped into the inner side of the box, and the positioning plate divides the inner space of the box into several cavities. The positioning plate can flexibly adjust the layout of the internal cavities to adapt to the storage needs of different tool sizes and improve space utilization.

[0014] Preferably, the buffer pad is provided with a foolproof groove, and the foolproof groove is adapted to the positioning plate. The foolproof groove design ensures that the buffer pad and the positioning plate are accurately aligned, avoiding installation errors and improving assembly efficiency.

[0015] Preferably, a connecting ring is fixedly provided on the outside of the box, and the connecting ring is connected to an external fixing object. The connecting ring facilitates the toolbox to be fixed in a vehicle or other location, preventing it from moving or tipping over in a bumpy environment.

[0016] This utility model provides a multi-layer composite pad structure and an automotive EPP toolbox, which, compared with the prior art: 1. This utility model adopts a multi-layer composite pad structure. Through the synergistic effect of the surface layer, EPP foam middle layer, fiber cloth reinforcement layer and silicone bottom layer, the protective performance of the toolbox is improved. The microfiber leather surface layer can effectively prevent the tool surface from being scratched. The mesh EPP foam layer combined with the surface texture enhances the material's energy absorption and dispersion ability, buffering continuous vibration and accidental impact. The high-strength fiber cloth composite layer provides excellent support and puncture and tear resistance, ensuring that heavy or bladed tools will not damage the cushioning pad itself, thus improving the cushioning pad's performance of gentle contact, efficient cushioning and rigid support.

[0017] 2. The toolbox of this utility model forms a modular storage space through the partition plate and adjustable positioning plate. With the customized tool slot and anti-mistake slot design on the cushioning pad, it not only realizes the neat and orderly storage and quick access of tools, but also avoids mis-installation. In addition, the hollow part and grid plate design of the box body further reduces the weight and enhances the practicality, thereby improving the use effect of the car toolbox. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present utility model; Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged structural diagram at point A; Figure 3 This is a three-dimensional structural diagram of the multilayer composite pad structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the layered structure of the multilayer composite pad according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the buffer layer according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the layered structure of the reinforcement layer in an embodiment of the present invention.

[0020] icon: 1. Box body; 2. Buffer pad; 10. Divider plate; 11. Tool cavity; 12. Hollowed-out part; 13. Grating plate; 14. Positioning plate; 15. Cavity; 16. Connecting ring; 20. Tool slot; 21. Anti-fooling groove; 22. Surface layer; 23. Buffer layer; 24. Reinforcing layer; 25. Bottom layer; 230. Embossed texture; 251. Upper fiber cloth layer; 252. Middle support foam layer; 253. Lower fiber cloth layer. Detailed Implementation

[0021] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] Please refer to Figures 3-6 This utility model embodiment provides a multi-layer composite pad structure, including a buffer pad 2, wherein the buffer pad 2 is provided with a top layer 22, an intermediate buffer layer 23, a reinforcing layer 24, and a bottom layer 25 stacked from top to bottom, and adjacent layers are fixedly connected by an adhesive. The intermediate buffer layer 23 is an EPP foam layer with a mesh structure, and the upper and lower surfaces of the intermediate buffer layer 23 are provided with textured surfaces 230 to increase the bonding area. The reinforcing layer 25 is a three-layer composite structure, including an upper fiber cloth layer 251, an intermediate support foam layer 252, and a lower fiber cloth layer 253. The upper fiber cloth layer 251 and the lower fiber cloth layer 253 are respectively bonded to the upper and lower surfaces of the intermediate support foam layer 252 by an adhesive. The bottom layer 25 is a silicone layer.

[0023] The adhesive is an epoxy resin adhesive, the top layer 22 is made of microfiber leather, the bottom layer 25 is made of silicone, and the lower surface of the silicone is provided with anti-slip texture.

[0024] Please refer to Figure 1 and Figure 2 On the other hand, this application also provides an automotive EPP toolbox with a multi-layer composite pad structure, including a box body 1, a partition plate 10 fixedly disposed on the inner side of the box body 1, and a tool cavity 11 formed between the partition plate 10 and the inner wall of the box body 1, a multi-layer composite pad structure embedded in the tool cavity 11, and a tool groove 20 provided on the surface layer 22 of the multi-layer composite pad structure.

[0025] A perforated portion 12 is formed between the partition plate 10 and the inner wall of the box body 1, and a grid plate 13 is fixedly provided on the bottom surface of the perforated portion 12. The perforated portion 12 and the grid plate 13 reduce the weight of the toolbox and provide ventilation and drainage functions to avoid corrosion caused by tools with oil.

[0026] A positioning plate 14 is snapped into the inner side of the housing 1, and the positioning plate 14 divides the inner space of the housing 1 into several cavities 15. The buffer pad 2 is provided with a foolproof groove 21, and the foolproof groove 21 is adapted to the positioning plate 14. The positioning plate 14 can flexibly adjust the layout of the internal cavities 15 to adapt to the storage needs of different tool sizes, improve space utilization, and the positioning plate 14 and the foolproof groove 21 work together to ensure that the buffer pad 2 and the positioning plate 14 are accurately connected, avoid installation errors and improve assembly efficiency.

[0027] In order to secure the toolbox to the vehicle or other location and prevent it from moving or tipping over in a bumpy environment, a connecting ring 16 is fixedly provided on the outside of the box 1, and the connecting ring 16 is connected to an external fixing object.

[0028] In summary, during use, the automotive EPP toolbox effectively absorbs and disperses vibrations and impacts during vehicle operation through its multi-layer composite pad structure. The top layer 22 provides a soft contact surface to prevent tool scratches, the middle EPP foam layer utilizes a mesh structure and textured surface 230 to enhance the bonding area and cushioning performance, efficiently absorbing energy and reducing resonance, the reinforcing layer 24 provides high strength and abrasion resistance through a composite of fiber cloth and supporting foam, preventing damage from heavy tools or punctures from sharp edges, and the bottom silicone layer 25 increases anti-slip properties to prevent the pad from shifting. At the same time, the tool slots 20 and dividers 10 ensure that tools are fixed in place and reduce mutual collisions, thereby improving the overall protection performance for precision tools and parts.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-layer composite pad structure, characterized in that: The cushioning pad (2) is provided with a top layer (22), a middle cushioning layer (23), a reinforcing layer (24), and a bottom layer (25) stacked from top to bottom. The adjacent layers are fixedly connected by an adhesive. The middle cushioning layer (23) is an EPP foam layer with a mesh structure. The upper and lower surfaces of the middle cushioning layer (23) are provided with textured surfaces (230) to increase the bonding area. The reinforcing layer (24) is a three-layer composite structure, including an upper fiber cloth layer (251), a middle support foam layer (252), and a lower fiber cloth layer (253). The upper fiber cloth layer (251) and the lower fiber cloth layer (253) are respectively bonded to the upper and lower surfaces of the middle support foam layer (252) by an adhesive. The bottom layer (25) is a silicone layer.

2. The multilayer composite pad structure according to claim 1, characterized in that: The adhesive is an epoxy resin adhesive.

3. The multilayer composite pad structure according to claim 2, characterized in that: The surface layer (22) is microfiber leather.

4. The multilayer composite pad structure according to claim 1, characterized in that: The bottom layer (25) has anti-slip texture on its lower surface.

5. An automotive EPP toolbox, comprising a housing (1), characterized in that: A partition plate (10) is fixedly provided on the inner side of the box (1), and a tool cavity (11) is formed between the partition plate (10) and the inner wall of the box (1). The partition plate (10) is embedded with a multi-layer composite pad structure as described in any one of claims 1-4, and the surface layer (22) of the multi-layer composite pad structure is provided with a tool groove (20).

6. The automotive EPP toolbox according to claim 5, characterized in that: The partition plate (10) forms a hollow part (12) between the inner wall of the box (1) and the bottom surface of the hollow part (12) is fixedly provided with a grid plate (13).

7. The automotive EPP toolbox according to claim 5, characterized in that: The inner side of the box (1) is fitted with a positioning plate (14), and the positioning plate (14) divides the inner space of the box (1) into several cavities (15).

8. The automotive EPP toolbox according to claim 7, characterized in that: The buffer pad (2) is provided with a foolproof groove (21), and the foolproof groove (21) is compatible with the positioning plate (14).

9. The automotive EPP toolbox according to claim 5, characterized in that: A connecting ring (16) is fixedly provided on the outside of the box (1), and the connecting ring (16) is connected to an external fixing ring.

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