Electromagnetic radiation resistant flame-retardant passenger car foot mat

Abstract

This application relates to a flame-retardant passenger car floor mat that protects against electromagnetic radiation, belonging to the field of automotive parts technology. It includes a wear-resistant surface layer, an electromagnetic shielding layer, an auxiliary absorption layer, a flame-retardant and heat-insulating layer, and an anti-slip base layer. This application utilizes the synergistic effect of the wear-resistant surface layer, electromagnetic shielding layer, auxiliary absorption layer, flame-retardant and heat-insulating layer, and anti-slip base layer. The copper mesh and nickel alloy mesh in the electromagnetic shielding layer can shield electromagnetic radiation of different frequency bands respectively. Combined with the isolation effect of the polyimide insulating film, this avoids the inability of a single material to cover multiple frequency bands of radiation. The conductive fiber non-woven fabric and magnetic particles in the auxiliary absorption layer further absorb residual radiation not completely blocked by the electromagnetic shielding layer, improving the overall electromagnetic protection effect. Finally, the flame-retardant rubber layer and aluminum hydroxide particles in the flame-retardant and heat-insulating layer can suppress combustion in the event of an accidental fire in the vehicle. Through overall synergy, it achieves multi-frequency electromagnetic radiation blocking and highly efficient flame-retardant protection, comprehensively optimizing performance.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a flame-retardant passenger car floor mat that is resistant to electromagnetic radiation. Background Technology

[0002] With the rapid development of the new energy vehicle industry, pure electric and plug-in hybrid passenger vehicles have gradually become the mainstream in the market due to their environmental protection and energy-saving advantages. These passenger vehicles are generally equipped with multiple high-capacity power battery packs to meet range requirements. During charging, discharging, and normal operation, the power batteries continuously generate electromagnetic radiation covering low to high frequency bands. As one of the core accessories of passenger vehicle interiors, floor mats typically focus on anti-slip, wear-resistant, and easy-to-clean functions. As a component that directly contacts the feet of drivers and passengers and covers a large area of ​​the chassis, floor mats have a natural advantage in serving as a protective barrier against electromagnetic radiation from the chassis.

[0003] Currently, passenger car floor mats on the market do not specifically protect against electromagnetic radiation, and most do not take flame retardant properties into account. Their electromagnetic radiation blocking capabilities are either lacking or limited. Traditional floor mats are mostly made of ordinary rubber, fabric, or single plastic materials, which cannot effectively block the multi-frequency electromagnetic radiation generated by power batteries. Some floor mats that claim to have anti-radiation functions only use a single-layer metal mesh structure, which can only shield radiation of a specific frequency band and cannot achieve full coverage of high and low frequency bands. With long-term use, drivers and passengers still face the risk of electromagnetic radiation exposure. At the same time, the existing floor mat materials are mostly ordinary polymer materials without the addition of highly effective flame retardant components. When new energy vehicles experience accidental fires such as battery thermal runaway or short circuits, the floor mats are prone to rapid combustion and release toxic fumes, exacerbating safety hazards. Utility Model Content

[0004] The purpose of this application is to provide a flame-retardant passenger car floor mat that protects against electromagnetic radiation. By synergistically combining a wear-resistant surface layer, an electromagnetic shielding layer, an auxiliary absorption layer, a flame-retardant heat insulation layer, and an anti-slip base layer, it can achieve multi-band electromagnetic radiation blocking and efficient flame-retardant protection, comprehensively optimize performance, and solve the problems mentioned in the background art.

[0005] This application provides a flame-retardant passenger car floor mat that protects against electromagnetic radiation, comprising a wear-resistant surface layer, an electromagnetic shielding layer, an auxiliary absorption layer, a flame-retardant and heat-insulating layer, and an anti-slip base layer. The wear-resistant surface layer, electromagnetic shielding layer, auxiliary absorption layer, flame-retardant and heat-insulating layer, and anti-slip base layer are arranged sequentially from top to bottom. The electromagnetic shielding layer comprises a copper mesh, a polyimide insulating film, and a nickel alloy mesh. The auxiliary absorption layer comprises a conductive fiber nonwoven fabric, the inner side of which is filled with magnetic particles. The flame-retardant and heat-insulating layer comprises a flame-retardant rubber layer, the interior of which is filled with aluminum hydroxide particles.

[0006] By adopting the above technical solution, the wear-resistant surface layer can protect the upper contact area of ​​the vehicle, avoiding wear and tear caused by daily foot traffic. Then, the copper mesh and nickel alloy mesh in the electromagnetic shielding layer can shield electromagnetic radiation of different frequency bands respectively. Combined with the isolation effect of the polyimide insulating film, this avoids the inability of a single material to cover multiple frequency bands of radiation. At the same time, the conductive fiber non-woven fabric and magnetic particles in the auxiliary absorption layer can further absorb residual radiation that is not completely blocked by the electromagnetic shielding layer, improving the overall electromagnetic protection effect. Finally, the flame-retardant rubber layer and aluminum hydroxide particles in the flame-retardant and heat-insulating layer can suppress combustion and reduce the release of toxic fumes in the event of an accidental fire in the vehicle, improving the flame-retardant performance of the floor mat. With the overall synergy, multi-frequency electromagnetic radiation blocking and efficient flame-retardant protection can be achieved.

[0007] Preferably, the wear-resistant surface layer is made of flame-retardant elastic material, and the surface of the wear-resistant surface layer is provided with anti-slip texture.

[0008] By adopting the above technical solution, the flame-retardant elastic material used in the wear-resistant surface layer not only retains the elastic feel and improves driving comfort, but also enhances the flame-retardant performance of the floor mat, preventing the surface from burning first. At the same time, the anti-slip texture can increase the friction between the foot and the surface layer, reducing the chance of the foot slipping during driving.

[0009] Preferably, the copper mesh has a mesh count of 80, and the nickel alloy mesh has a mesh count of 120.

[0010] By adopting the above technical solution, the copper mesh can specifically shield the low-frequency electromagnetic radiation generated by the power battery, while the nickel alloy mesh can effectively block the high-frequency electromagnetic radiation. The two work together to avoid the situation where the traditional single-layer metal mesh can only shield a single frequency band of radiation, thereby achieving comprehensive coverage and blocking of electromagnetic radiation in both high and low frequency bands, and reducing the risk of radiation exposure for drivers and passengers.

[0011] Preferably, the polyimide insulating film is located between the copper mesh and the nickel alloy mesh, and the copper mesh, the polyimide insulating film and the nickel alloy mesh are fixedly connected by a hot pressing process.

[0012] By adopting the above technical solution, the polyimide insulating film can effectively isolate the copper mesh and the nickel alloy mesh, prevent the two metal meshes from directly contacting each other and generating eddy currents, avoid the interference of eddy currents on the shielding effect, and ensure the stable shielding performance of the electromagnetic shielding layer.

[0013] Preferably, the conductive fiber nonwoven fabric is made of polyester fiber, and the surface of the conductive fiber nonwoven fabric is coated with nickel-based conductive yarn.

[0014] By adopting the above technical solution, the polyester fiber material used in the conductive fiber nonwoven fabric has good flexibility and can be closely bonded to other functional layers; the nickel-based conductive yarn plated on its surface can enhance the absorption capacity of residual electromagnetic radiation, and with the auxiliary absorption effect of magnetic particles, it can further weaken the radiation that is not completely blocked by the electromagnetic shielding layer and improve the overall electromagnetic radiation blocking effect.

[0015] Preferably, the anti-slip base layer is made of rubber, and the outer side of the anti-slip base layer has multiple equidistantly arranged anti-slip protrusions integrally formed.

[0016] By adopting the above technical solution, the rubber material used in the anti-slip base layer has good wear resistance and elasticity, which can adapt to the slight protrusions or depressions of the chassis and improve the fit. At the same time, the anti-slip protrusions can increase the friction between the anti-slip base layer and the chassis, effectively preventing the floor mat from shifting during vehicle operation and avoiding the failure of flame retardant protection due to shifting.

[0017] Preferably, the outer side of the anti-slip base layer is fixedly connected with multiple buckles, and the positions of the buckles are adapted to the positions of the original vehicle's clip holes.

[0018] By adopting the above technical solution, the buckles on the outer side of the anti-slip base layer can be precisely matched with the original car's clip holes, achieving a rigid fixation between the floor mat and the car body, further enhancing the anti-slip effect.

[0019] Preferably, the anti-slip base layer and the flame-retardant heat insulation layer are fixedly connected by a hot-pressing process, the flame-retardant heat insulation layer and the auxiliary absorption layer are bonded together by resin adhesive, and the auxiliary absorption layer, the electromagnetic shielding layer and the wear-resistant surface layer are fixedly connected by a hot-pressing process.

[0020] By adopting the above technical solution, the five-layer structure can be tightly bonded by hot-pressing the anti-slip base layer and the flame-retardant heat insulation layer, bonding the flame-retardant heat insulation layer and the auxiliary absorption layer with resin adhesive, and hot-pressing the auxiliary absorption layer to the wear-resistant surface layer. This avoids electromagnetic radiation leakage from the gaps between the layers, while also enhancing the overall structural strength and preventing layer separation during daily use.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This type of electromagnetic radiation-resistant flame-retardant passenger car floor mat utilizes a multi-layered structure consisting of a wear-resistant surface layer, an electromagnetic shielding layer, an auxiliary absorption layer, a flame-retardant heat insulation layer, and an anti-slip base layer. The wear-resistant surface layer, made of flame-retardant elastic material with anti-slip textures, provides both enhanced protection and comfort while strengthening its flame retardancy to prevent initial combustion. The electromagnetic shielding layer, with its copper and nickel alloy mesh, shields different frequency bands of electromagnetic radiation. Combined with the insulating effect of the polyimide film, this prevents single-material applications from being insufficient to cover multiple frequency bands. The conductive fiber non-woven fabric and magnetic particles in the auxiliary absorption layer further absorb residual radiation not completely blocked by the electromagnetic shielding layer, improving overall electromagnetic protection. Finally, the flame-retardant rubber layer and aluminum hydroxide particles in the flame-retardant heat insulation layer suppress combustion in the event of an accidental fire, reducing the release of toxic fumes and enhancing the floor mat's flame-retardant performance. This comprehensive approach achieves multi-frequency electromagnetic radiation blocking and highly efficient flame-retardant protection, optimizing overall performance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0024] Figure 2 This is a cross-sectional structural diagram of the entire application;

[0025] Figure 3 This is a three-dimensional structural diagram of the electromagnetic shielding layer of this application;

[0026] Figure 4 This is a schematic diagram of the exploded structure of the auxiliary absorption layer and the flame-retardant heat insulation layer in this application;

[0027] Figure 5 This is a three-dimensional structural diagram of the anti-slip base layer of this application.

[0028] In the picture:

[0029] 1. Wear-resistant surface layer; 2. Electromagnetic shielding layer; 201. Copper mesh; 202. Polyimide insulating film; 203. Nickel alloy mesh; 3. Auxiliary absorption layer; 301. Conductive fiber non-woven fabric; 302. Magnetic particles; 4. Flame-retardant and heat-insulating layer; 401. Flame-retardant rubber layer; 402. Aluminum hydroxide particles; 5. Anti-slip base layer; 501. Anti-slip bumps; 502. Buckle. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: A flame-retardant passenger car floor mat that protects against electromagnetic radiation, referring to... Figure 1 , Figure 3 and Figure 4The system comprises a wear-resistant surface layer 1, an electromagnetic shielding layer 2, an auxiliary absorption layer 3, a flame-retardant and heat-insulating layer 4, and an anti-slip base layer 5, arranged sequentially from top to bottom. The wear-resistant surface layer 1 protects the upper passenger contact area from wear caused by daily foot traffic. The electromagnetic shielding layer 2 includes a copper mesh 201, a polyimide insulating film 202, and a nickel alloy mesh 203. The copper mesh 201 and nickel alloy mesh 203 in the electromagnetic shielding layer 2 can shield electromagnetic radiation of different frequency bands respectively. Combined with the isolation effect of the polyimide insulating film 202, this avoids the problem of single material or no shielding. The system covers multi-frequency radiation. The auxiliary absorption layer 3 includes a conductive fiber nonwoven fabric 301, with magnetic particles 302 filling the inner side of the conductive fiber nonwoven fabric 301. The conductive fiber nonwoven fabric 301 and magnetic particles 302 in the auxiliary absorption layer 3 can further absorb residual radiation that is not completely blocked by the electromagnetic shielding layer 2, thereby improving the overall electromagnetic protection effect. The flame-retardant and heat-insulating layer 4 includes a flame-retardant rubber layer 401, with aluminum hydroxide particles 402 filling the interior of the flame-retardant rubber layer 401. The flame-retardant rubber layer 401 and aluminum hydroxide particles 402 in the flame-retardant and heat-insulating layer 4 can suppress combustion, reduce the release of toxic fumes, and improve the flame-retardant performance of the floor mat when an accidental fire occurs in the vehicle.

[0032] Reference Figure 2 , Figure 3 and Figure 4 The copper mesh 201 has a mesh count of 80, and the nickel alloy mesh 203 has a mesh count of 120. The copper mesh 201 can specifically shield low-frequency electromagnetic radiation generated by the power battery, while the nickel alloy mesh 203 can effectively block high-frequency electromagnetic radiation. The two work together to avoid the situation where traditional single-layer metal meshes can only shield a single frequency band of radiation, thus achieving comprehensive coverage and blocking of both high and low frequency electromagnetic radiation, reducing the risk of radiation exposure for drivers and passengers. The polyimide insulating film 202 is located between the copper mesh 201 and the nickel alloy mesh 203. The copper mesh 201, polyimide insulating film 202, and nickel alloy mesh 203 are fixedly connected by a hot-pressing process. The polyimide insulating film 202 can effectively shield... The copper mesh 201 and the nickel alloy mesh 203 are separated to prevent direct contact between the two metal meshes and the generation of eddy currents, thus avoiding interference with the shielding effect and ensuring the stable shielding performance of the electromagnetic shielding layer 2. The conductive fiber nonwoven fabric 301 is made of polyester fiber and its surface is coated with nickel-based conductive yarn. The polyester fiber material used in the conductive fiber nonwoven fabric 301 has good flexibility and can be tightly bonded to other functional layers. The nickel-based conductive yarn coated on its surface can enhance the absorption capacity of residual electromagnetic radiation. Combined with the auxiliary absorption effect of magnetic particles 302, it can further weaken the radiation that is not completely blocked by the electromagnetic shielding layer 2 and improve the overall electromagnetic radiation blocking effect.

[0033] Example 2: A flame-retardant passenger car floor mat that protects against electromagnetic radiation, referring to... Figure 1 and Figure 5 The wear-resistant surface layer 1 is made of flame-retardant elastic material. The surface of the wear-resistant surface layer 1 has anti-slip textures. The flame-retardant elastic material used in the wear-resistant surface layer 1 retains an elastic feel, improving driving comfort, while also enhancing the flame-retardant performance of the floor mat, preventing the surface from igniting first. At the same time, the anti-slip textures increase the friction between the foot and the surface, reducing slippage during driving. The anti-slip base layer 5 is made of rubber. The outer side of the anti-slip base layer 5 has multiple equidistantly arranged anti-slip protrusions 501 integrally formed. The rubber material used in the aforementioned anti-slip base layer 5... With good wear resistance and elasticity, it can adapt to slight bumps or depressions in the chassis, improving fit. At the same time, the anti-slip protrusions 501 can increase the friction between the anti-slip base layer 5 and the chassis, effectively preventing the floor mat from shifting during vehicle operation and avoiding the failure of flame retardant protection due to shifting. Multiple buckles 502 are fixedly connected to the outside of the anti-slip base layer 5. The position of the buckles 502 is adapted to the position of the original car's buckle hole. The buckles 502 on the outside of the anti-slip base layer 5 can be precisely adapted to the original car's buckle hole, realizing the rigid fixation of the floor mat to the car body and further enhancing the anti-slip effect.

[0034] Reference Figure 1 and Figure 2 The anti-slip base layer 5 and the flame-retardant heat insulation layer 4 are fixedly connected by a hot-pressing process. The flame-retardant heat insulation layer 4 and the auxiliary absorption layer 3 are bonded together by resin adhesive. The auxiliary absorption layer 3, the electromagnetic shielding layer 2 and the wear-resistant surface layer 1 are fixedly connected by a hot-pressing process. By using the hot-pressing connection between the anti-slip base layer 5 and the flame-retardant heat insulation layer 4, the resin adhesive bonding between the flame-retardant heat insulation layer 4 and the auxiliary absorption layer 3, and the hot-pressing connection between the auxiliary absorption layer 3 and the wear-resistant surface layer 1, a tight fit of the five-layer structure can be achieved, avoiding electromagnetic radiation leakage from the gaps between the layers, while enhancing the overall structural strength and preventing layer separation during daily use.

[0035] The implementation principle of this application embodiment is as follows: First, the anti-slip base layer 5 is double-fixed by the anti-slip protrusions 501 and the buckles 502, so that the floor mat is precisely fitted to the original vehicle chassis, ensuring that each functional layer is aligned with the power battery radiation source area, avoiding displacement that would lead to protection failure. When the power battery generates electromagnetic radiation, the radiation is first absorbed across the entire frequency band by the conductive fiber non-woven fabric 301 and magnetic particles 302 of the auxiliary absorption layer 3. Then, the residual radiation that is not completely blocked enters the electromagnetic shielding layer 2. At this time, the copper mesh 201 first forms a preliminary shield for low-frequency radiation, the nickel alloy mesh 203 forms a shield for high-frequency radiation, and the polyimide insulating film 20... 2. To prevent eddy currents from forming when the two metal meshes come into contact, ensuring shielding effectiveness, the two work together to form a dual protection of shielding and absorption, ultimately achieving efficient blocking of multi-band electromagnetic radiation. If the vehicle experiences accidental fires such as battery thermal runaway or short circuits, the flame-retardant rubber layer 401 and aluminum hydroxide particles 402 of the flame-retardant heat insulation layer 4 can inhibit the spread of combustion and reduce the release of toxic fumes. The flame-retardant elastic material of the wear-resistant surface layer 1 further enhances the flame-retardant effect, while its surface anti-slip texture prevents passengers from slipping. Each layer is tightly connected by hot pressing and resin adhesive bonding to ensure seamless interlayer connections, preventing radiation leakage and improving structural stability.

Claims

1. A flame-retardant passenger car floor mat with electromagnetic radiation protection, comprising a wear-resistant surface layer (1), an electromagnetic shielding layer (2), an auxiliary absorption layer (3), a flame-retardant and heat-insulating layer (4), and an anti-slip base layer (5), characterized in that: The wear-resistant surface layer (1), electromagnetic shielding layer (2), auxiliary absorption layer (3), flame-retardant heat insulation layer (4) and anti-slip base layer (5) are arranged sequentially from top to bottom. The electromagnetic shielding layer (2) includes a copper mesh (201), a polyimide insulating film (202) and a nickel alloy mesh (203). The auxiliary absorption layer (3) includes a conductive fiber nonwoven fabric (301). The inner side of the conductive fiber nonwoven fabric (301) is filled with magnetic particles (302). The flame-retardant heat insulation layer (4) includes a flame-retardant rubber layer (401). The interior of the flame-retardant rubber layer (401) is filled with aluminum hydroxide particles (402).

2. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 1, characterized in that: The wear-resistant surface layer (1) is made of flame-retardant elastic material, and the surface of the wear-resistant surface layer (1) is provided with anti-slip texture.

3. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 1, characterized in that: The copper mesh (201) has a mesh count of 80, and the nickel alloy mesh (203) has a mesh count of 120.

4. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 3, characterized in that: The polyimide insulating film (202) is located between the copper mesh (201) and the nickel alloy mesh (203), and the copper mesh (201), the polyimide insulating film (202) and the nickel alloy mesh (203) are fixedly connected by a hot pressing process.

5. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 1, characterized in that: The conductive fiber nonwoven fabric (301) is made of polyester fiber, and the surface of the conductive fiber nonwoven fabric (301) is coated with nickel-based conductive yarn.

6. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 1, characterized in that: The anti-slip base layer (5) is made of rubber, and the outer side of the anti-slip base layer (5) is integrally formed with multiple anti-slip protrusions (501) arranged at equal intervals.

7. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 6, characterized in that: The outer side of the anti-slip base layer (5) is fixedly connected with multiple buckles (502), and the position of the buckles (502) is adapted to the position of the original vehicle buckle hole.

8. The electromagnetic radiation-resistant and flame-retardant passenger car floor mat according to claim 1, characterized in that: The anti-slip base layer (5) and the flame-retardant heat insulation layer (4) are fixedly connected by hot pressing process. The flame-retardant heat insulation layer (4) and the auxiliary absorption layer (3) are bonded together by resin adhesive. The auxiliary absorption layer (3), the electromagnetic shielding layer (2) and the wear-resistant surface layer (1) are fixedly connected by hot pressing process.

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