A graphene carpet for vehicles

Abstract

The utility model relates to vehicle interior and exterior trim structure technical field, concretely relates to a kind of vehicle graphene carpet, including blanket surface body and graphene film, installation cavity is provided on blanket surface body, graphene film is bonded in installation cavity, interface box is equipped at the outlet of graphene film, interface box includes wire inlet end and outlet end, interface box includes the terminal block that is contained to its inside, interface box is between wire inlet end and outlet end, the outlet head of graphene film is connected with terminal block by wire inlet end, interface box includes the winding area located in the peripheral side of terminal block, double-sided adhesive is equipped on the surface that graphene film and installation cavity adhere, graphene film is bonded in installation cavity by double-sided adhesive.The graphene carpet in the scheme of the utility model is rapidly heated, the comfort of driving is high, the safety performance is high, and the structure is firm.

Description

Technical Field

[0001] This utility model relates to the field of vehicle interior and exterior structural technology, and specifically provides a graphene carpet for vehicles. Background Technology

[0002] The automotive heating system is a crucial system for improving passenger comfort, ensuring driving safety, protecting the engine, maintaining healthy cabin air, and achieving energy efficiency. With climate change and evolving consumer demands, the reliability and intelligence of heating technology will continue to be a focus of automotive R&D and market competition. Currently, winter heating in vehicles, especially electric vehicles, presents a significant challenge. Existing air conditioning systems suffer from low heating efficiency and high energy consumption, severely shortening driving range. To address this issue, the industry is exploring integrating heating functions into car carpets. Existing solutions include: 1. The patent document with publication number "CN213073142U" and title "A Graphene Heated Carpet" adopts a multi-layer structure of "graphene layer + aluminum foil reflective layer + PET layer". The aluminum foil reflects heat to improve thermal efficiency, and this solution can ensure stable heating performance.

[0003] However, the structural design of this solution is complex, and the introduction of aluminum foil may reduce the overall flexibility of the carpet, affecting the feel and fit underfoot. Furthermore, this solution does not fully consider conformal design and seamless integration with existing automotive carpets, which may result in an unsightly appearance after installation and make it difficult to meet the original manufacturer's quality requirements.

[0004] 2. The patent document with publication number "CN222432167U" and title "A Heatable Composite Carpet" adopts a combination of traditional metal heating wire and multi-layer functional structure (pile, antistatic, waterproof, heat-conducting and wear-resistant layer). It integrates multiple materials and has the functions of warmth, antistatic, waterproof, heat-conducting and wear-resistant.

[0005] However, this solution still uses linear heating wires, which poses the risk of uneven heating and localized overheating. At the same time, the multi-layered composite structure leads to complicated processes and increased costs, and the overall thickness and weight may increase accordingly, which is inconsistent with the development trend of lightweight and integrated automobiles.

[0006] 3. The patent document with publication number "CN221585239U" and title "A composite heating carpet for automobiles with self-limiting heat function" uses a carbon-based thermoplastic polymer as the heating layer, which has self-limiting heat characteristics and can be partially bonded to the automobile carpet body. This solution can be scheduled to heat up, save time, improve comfort, and has a self-limiting heat function.

[0007] However, the advantage of this solution lies in the safety of the heating material itself. It does not solve the problems of exposed interfaces and exposed wiring harnesses, resulting in poor overall vehicle aesthetics and safety. It also does not truly achieve seamless integration with the original vehicle carpet.

[0008] In summary, existing automotive heated carpet solutions have varying degrees of technical shortcomings in terms of integration, safety, aesthetics, and manufacturing costs. Currently, there is no solution that can perfectly combine efficient surface heating, completely concealed interfaces, preservation of the original vehicle's texture, and integrated molding. Therefore, there is an urgent need for an innovative integrated heated carpet design that can simultaneously meet multiple requirements for performance, safety, aesthetics, and cost. Utility Model Content

[0009] To solve the above problems, this utility model provides a graphene carpet for vehicles that can improve driving comfort, without changing the appearance and texture of the original car carpet, and is durable.

[0010] This utility model provides a graphene carpet for vehicles, comprising a carpet body and a graphene film. The carpet body has an installation cavity, and the graphene film is adhered to the installation cavity. An interface box is provided at the outlet of the graphene film. The interface box includes an inlet end and an outlet end. The interface box includes a terminal block housed inside it. The interface box is located between the inlet end and the outlet end. The outlet end of the graphene film is connected to the terminal block through the inlet end. The interface box includes a winding area located around the terminal block.

[0011] Furthermore, the middle part of the interface box includes a receiving cavity, and the terminal block is placed inside the receiving cavity; the inlet and outlet terminals are connected to the receiving cavity.

[0012] Furthermore, the winding area includes a placement platform located on the upper periphery of the receiving cavity. The placement platform is formed by opening the upper end face of the interface box downwards, and the inner diameter of the placement platform is larger than the inner diameter of the receiving cavity.

[0013] Furthermore, the inner diameter of the cavity is larger than the outer diameter of the terminal block, and the winding area also includes a receiving gap located between the terminal block and the cavity wall.

[0014] Furthermore, the inlet end is an inlet hole opened at the bottom of the terminal block, and the inlet hole is connected to the receiving cavity; the outlet end of the graphene film passes through the inlet hole and connects to the terminal block inside the receiving cavity.

[0015] Furthermore, a retaining groove is provided on the bottom end face of the terminal block near the graphene film, with the length of the retaining groove being less than the length of the wiring hole.

[0016] Furthermore, the outgoing end is an outgoing groove located on the upper end of the terminal block, and the outgoing groove is connected to the receiving cavity; the height of the outgoing groove is less than the height of the terminal block.

[0017] Furthermore, the terminal block includes a vertical side and a composite side located opposite the vertical side, with a cable outlet groove formed on the vertical side; the composite side includes, from bottom to top, a bottom straight surface, a middle arc-shaped transition surface, and an upper conical surface, with the upper conical surface inclined inward from bottom to top.

[0018] Furthermore, the two ends of the composite side surface one and the vertical side surface are connected by the composite side surface two; the composite side surface two includes a bottom straight surface, a middle arc-shaped transition surface and an upper conical surface from bottom to top, and the upper conical surface is inclined inward from bottom to top.

[0019] Furthermore, double-sided adhesive is provided on the surface of the graphene film that is in contact with the mounting cavity, and the graphene film is bonded to the mounting cavity by the double-sided adhesive.

[0020] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. This solution uses a graphene planar heating layer as the core heating element, which has high heat conversion efficiency, can achieve rapid and uniform heating, significantly reduce dependence on air conditioning, is energy-efficient and can effectively improve the vehicle's range in winter. It heats up quickly and the heat is uniform, which can significantly improve foot comfort and greatly enhance the comfort of driving and riding.

[0021] 2. In this solution, the electrode leads are led out from the edge of the heating layer and converge into the embedded interface box. The box is integrally molded in the PU foam layer, and the heating system is completely built-in. The interface is cleverly hidden in the side panel, without changing any appearance, thickness or texture of the original car carpet. This achieves "invisible" heating, which is beautiful and clean, completely maintains the original car interior style, avoids the risk of tripping or being damaged by the wiring harness, and improves safety performance.

[0022] 3. In this solution, from top to bottom, there are three layers: a carpet surface layer, a graphene heating layer, and a PU cushioning layer. These layers are combined into a single unit through a one-time foaming process, achieving multi-layer integrated composite molding. This results in a robust structure, preventing delamination, providing a comfortable feel underfoot, maintaining the carpet's softness and cushioning performance, and ensuring high reliability. The wear-resistant layer protects the heating layer, making it durable. The high integration and strong reliability of this integrated molding process ensure the product's structural strength, durability, and waterproof performance, avoiding the potential for delamination later. Attached Figure Description

[0023] Figure 1 This is an exploded schematic diagram of a graphene carpet according to an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of a graphene carpet provided according to an embodiment of the present invention (foaming layer not shown). Figure 3 This is a partial structural schematic diagram of a graphene carpet provided according to an embodiment of the present invention (graphene film not shown). Figure 4This is a partial structural schematic diagram of a graphene carpet provided according to an embodiment of the present utility model; Figure 5 This is a structural schematic diagram of the interface box provided according to an embodiment of the present utility model; Figure 6 This is a structural schematic diagram of the interface box provided according to an embodiment of the present utility model.

[0024] The reference numerals in the attached drawings include: 1. Blanket body; 2. Graphene film; 3. Mounting cavity; 4. Interface box; 5. Terminal block; 6. Accommodating cavity; 7. Placement platform; 8. Accommodating gap; 9. Inlet hole; 10. Locking groove; 11. Outlet groove; 12. Vertical side; 13. Composite side one; 14. Bottom straight surface; 15. Middle arc-shaped transition surface; 16. Upper conical surface; 17. Composite side two; 18. Foaming layer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description is provided in conjunction with the appendix. Figure 1-6 The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and do not constitute a limitation thereof.

[0026] A graphene carpet for vehicles includes a carpet body 1 and a graphene film 2. The carpet body 1 has an installation cavity 3. The graphene film 2 is adhered to the installation cavity 3. Double-sided adhesive is provided on the surface of the graphene film 2 that is in contact with the installation cavity 3. The graphene film 2 is adhered to the installation cavity 3 by the double-sided adhesive. An interface box 4 is provided at the outlet of the graphene film 2. The interface box 4 includes an inlet end and an outlet end. The interface box 4 includes a terminal block 5 housed inside it. The interface box 4 is located between the inlet end and the outlet end. The outlet end of the graphene film 2 is connected to the terminal block 5 through the inlet end. In this embodiment, a graphene planar heating layer is used as the core heating element. It has high heat conversion efficiency, which can reach more than 99%. It can achieve rapid and uniform heating and significantly reduce reliance on air conditioning.

[0027] During manufacturing, the carpet body 1 is first shaped, then the graphene film 2 is bonded to the mounting cavity 3, then the interface box 4 is installed in the corresponding position and the wire outlet of the graphene film 2 is connected to the terminal block 5. The whole is then placed in the mold and foaming material is injected to form a PU foam layer 18. This structure is a multi-layer functional integrated composite molding structure, which is composited into a whole through a one-time foaming process. The structure is firm, can avoid delamination, is comfortable underfoot, can maintain the softness and cushioning of the carpet, and is highly reliable and durable.

[0028] The interface box 4 includes a cavity 6 in the middle, and a terminal block 5 is placed inside the cavity 6. The inlet and outlet ends are connected to the cavity 6. The inner diameter of the cavity 6 is larger than the outer diameter of the terminal block 5. The interface box 4 includes a winding area located around the terminal block 5. The winding area includes a placement platform 7 located on the upper periphery of the cavity 6. The placement platform 7 is formed by opening the upper end face of the interface box 4 downwards. The inner diameter of the placement platform 7 is larger than the inner diameter of the cavity 6. The winding area also includes a receiving gap 8 located between the terminal block 5 and the cavity wall of the cavity 6. Both the receiving gap 8 and the placement platform 7 can be used to wind the wire harness, thus avoiding wire tangling.

[0029] The inlet end is an inlet hole 9 at the bottom of the terminal block 5, which is connected to the cavity 6. The outlet end of the graphene film 2 passes through the inlet hole 9 and connects to the terminal block 5 in the cavity 6. The bottom end of the terminal block 5 near the graphene film 2 is provided with a retaining groove 10 facing upwards. The length of the retaining groove 10 is less than the length of the inlet hole. The outlet end is an outlet groove 11 at the top of the terminal block 5, which is connected to the cavity 6. The height of the outlet groove 11 is less than the height of the terminal block 5. The above-mentioned innovative interface concealment design allows the electrode leads to be led out from the edge of the graphene film 2 (heating layer) and gathered in the embedded interface box 4. The interface box 4 is integrally formed in the foam layer 18, which is beautiful and neat. It can maintain the original interior style of the car and further avoid the wiring harness from tripping or being damaged.

[0030] The terminal block 5 includes a vertical side 12 and a composite side 13 located opposite the vertical side 12. The cable outlet groove 11 is formed on the vertical side 12. The vertical side 12 is designed to avoid interference. The composite side 13 includes, from bottom to top, a bottom straight surface 14, a middle arc-shaped transition surface 15, and an upper conical surface 16. The upper conical surface 16 is inclined inward from bottom to top. The two ends of the composite side 13 and the vertical side 12 are connected by a composite side 2 17. The composite side 2 17 includes, from bottom to top, a bottom straight surface 14, a middle arc-shaped transition surface 15, and an upper conical surface 16. The upper conical surface 16 is inclined inward from bottom to top. The composite side 13 and the composite side 2 17 can improve the support performance.

[0031] In this embodiment, the carpet body 1 has a thickness of 3-5mm, maintaining the original car carpet's material, appearance, feel, and wear resistance. The graphene film 2 is a flexible planar heating element, with PET non-woven fabric laminated to the upper and lower surfaces for insulation encapsulation, resulting in a total thickness of approximately 1mm. The interface box 4 is made of EPP material and is attached to a fixed position on the carpet body 1. After PU foaming, the power interface can be completely hidden. The PU foam layer 18 is a buffer layer made of foamed PU material, with its upper layer bonded to the lower surface of the graphene heating layer graphene film 2. This provides a cushioning feel underfoot and effectively prevents heat loss downwards, directing heat to the carpet body 1. This results in energy efficiency and can effectively improve the winter driving range; it also heats up quickly, improving driving comfort.

[0032] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0033] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A graphene carpet for vehicles, characterized in that, The device includes a carpet body (1) and a graphene film (2). The carpet body (1) has an installation cavity (3), and the graphene film (2) is bonded to the installation cavity (3). The graphene film (2) has an interface box (4) at the wire outlet. The interface box (4) includes an inlet end and an outlet end. The interface box (4) includes a terminal block (5) housed inside it. The interface box (4) is located between the inlet end and the outlet end. The outlet end of the graphene film (2) is connected to the terminal block (5) through the inlet end. The interface box (4) includes a winding area located around the terminal block (5).

2. The automotive graphene carpet according to claim 1, characterized in that, The interface box (4) includes a cavity (6) in the middle, and the terminal block (5) is placed in the cavity (6); the inlet and outlet ends are connected to the cavity (6).

3. The automotive graphene carpet according to claim 2, characterized in that, The winding area includes a placement platform (7) located on the upper periphery of the receiving cavity (6). The placement platform (7) is formed by opening the upper end face of the interface box (4) downwards, and the inner diameter of the placement platform (7) is larger than the inner diameter of the receiving cavity (6).

4. The automotive graphene carpet according to claim 3, characterized in that, The inner diameter of the cavity (6) is larger than the outer diameter of the terminal block (5), and the winding area also includes a accommodating gap (8) located between the terminal block (5) and the cavity wall of the cavity (6).

5. The automotive graphene carpet according to claim 4, characterized in that, The inlet end is an inlet hole (9) opened at the bottom of the terminal block (5), and the inlet hole (9) is connected to the cavity (6); the outlet of the graphene film (2) passes through the inlet hole (9) and is connected to the terminal block (5) in the cavity (6).

6. The automotive graphene carpet according to claim 5, characterized in that, The bottom end face of the terminal block (5) near the graphene film (2) is provided with a locking groove (10), the length of which is less than the length of the wiring hole.

7. The automotive graphene carpet according to claim 6, characterized in that, The outlet end is an outlet groove (11) opened on the upper end of the terminal block (5), and the outlet groove (11) is connected to the accommodating cavity (6); the height of the outlet groove (11) is less than the height of the terminal block (5).

8. The automotive graphene carpet according to claim 7, characterized in that, The terminal block (5) includes a vertical side (12) and a composite side (13) located opposite the vertical side (12). The cable outlet groove (11) is opened on the vertical side (12). The composite side (13) includes a bottom straight surface (14), a middle arc-shaped transition surface (15) and an upper conical surface (16) from bottom to top. The upper conical surface (16) is inclined inward from bottom to top.

9. The automotive graphene carpet according to claim 8, characterized in that, The two ends of the composite side surface 1 (13) and the vertical side surface (12) are connected by the composite side surface 2 (17); the composite side surface 2 (17) includes a bottom straight surface (14), a middle arc-shaped transition surface (15) and an upper conical surface (16) from bottom to top, and the upper conical surface (16) is inclined inward from bottom to top.

10. The automotive graphene carpet according to claim 1, characterized in that, The graphene film (2) is attached to the mounting cavity (3) with double-sided adhesive, and the graphene film (2) is bonded to the mounting cavity (3) by the double-sided adhesive.

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