A multi-layered fire-retardant sound absorbing seat back panel

Abstract

The utility model belongs to the technical field of seat, disclose a kind of multilayer fire -retardant noise absorption seat backplate, including backplate body, the backplate body is made of five layers structure composite, the backplate body includes abrasion -resistant fire -retardant surface layer, perforated sound-absorbing layer, soundproof layer, damping layer and support backplate that are sequentially arranged, each layer is integrally formed by hot pressing, the abrasion -resistant fire -retardant surface layer is located outermost layer.The utility model can effectively block external fire source and delay flame spread by abrasion -resistant fire -retardant surface layer, perforated sound-absorbing layer and soundproof layer can efficiently absorb medium-high frequency noise by micro-perforation resonance and porous sound-absorbing, and damping layer further inhibits structural vibration energy transmission, solve the problem that traditional seat backplate is insufficient in fire -retardant and single in noise absorption means.

Description

Technical Field

[0001] This utility model belongs to the field of seat technology, specifically relating to a multi-layer flame-retardant and noise-absorbing seat back panel. Background Technology

[0002] As an interior component of vehicles, seat backrests must simultaneously meet requirements for structural support, safety protection, and functional comfort. Traditional seat backrests often employ simple composite structures, primarily using hard plastics, metal sheets, or fiber felt. While these provide basic support, they have certain deficiencies in terms of flame retardancy and noise control.

[0003] In the prior art, patent CN215752060U discloses a car seat back panel, which adopts a three-layer structure of non-woven fabric layer, bamboo fiber board layer and surface layer. Although the bamboo fiber material achieves moisture-proof, waterproof and environmentally friendly properties, the bamboo fiber layer is easily ignited and releases toxic fumes when a fire is caused by a vehicle collision or electrical fault, which aggravates the fire hazard. At the same time, the lack of noise-absorbing structure design makes it unable to effectively suppress the noise generated by engine vibration, airflow disturbance or passenger activities, which directly affects the safety of passengers and the riding experience. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a multi-layer flame-retardant and noise-absorbing seat back panel, which solves the problems of insufficient flame retardancy and single sound absorption method of traditional seat back panels.

[0005] The technical solution of this utility model is: a multi-layer flame-retardant and noise-absorbing seat back panel, including a back panel body, the back panel body is composed of a five-layer composite structure, the back panel body includes a wear-resistant and flame-retardant surface layer, a perforated sound-absorbing layer, a sound-insulating layer, a damping layer and a supporting back panel arranged in sequence, and each layer is integrally formed by hot pressing.

[0006] Preferably, the wear-resistant and flame-retardant surface layer is located on the outermost layer, and the wear-resistant and flame-retardant surface layer is formed by alternating layers of aramid fiber layer and carbon fiber layer.

[0007] Preferably, the thickness of the wear-resistant and flame-retardant surface layer is 0.5 to 0.8 mm.

[0008] Preferably, the perforated sound-absorbing layer is an aluminum alloy micro-perforated plate with a pore diameter of 0.8 to 1.0 mm.

[0009] Preferably, the thickness of the perforated sound-absorbing layer is 1 to 2 mm.

[0010] Preferably, the sound-absorbing layer comprises a flame-retardant resin matrix, the interior of which is filled with hollow ceramic microspheres.

[0011] Preferably, the sound-absorbing layer has a thickness of 2-3 mm, and the hollow ceramic microspheres have a particle size of 20-40 μm.

[0012] Preferably, the damping layer comprises a polyurethane matrix, on which honeycomb holes are arranged in an equidistant array, and a plurality of support columns are provided within the polyurethane matrix, and the thickness of the damping layer is 4-6 mm.

[0013] Preferably, the back panel body has an arc-shaped concave portion on its back side for accommodating a mesh bag.

[0014] Preferably, a mounting bracket is fixedly connected to the back of the back panel body, and the mounting bracket is located on the outside of the concave portion for fixing the storage net bag.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] In this application, the wear-resistant and flame-retardant surface layer can effectively block external fire sources and delay the spread of flames. The perforated sound-absorbing layer and the sound-insulating layer can efficiently absorb mid-to-high frequency noise through micro-perforated resonance and porous sound absorption. The damping layer further suppresses the transmission of structural vibration energy, solving the problems of insufficient flame retardancy and single noise absorption method of traditional seat back panels. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the backplate body structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the sound-absorbing layer structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the damping layer structure of this utility model.

[0022] In the attached image:

[0023] 1. Back panel body; 11. Wear-resistant and flame-retardant surface layer; 12. Perforated sound-absorbing layer; 13. Sound-insulating layer; 131. Flame-retardant resin matrix; 132. Hollow ceramic microspheres; 14. Damping layer; 141. Polyurethane matrix; 142. Honeycomb holes; 143. Support column; 15. Support back panel; 20. Recessed part; 30. Mounting bracket. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Please see Figure 1-4 A multi-layer flame-retardant and noise-absorbing seat back panel is disclosed, comprising a back panel body 10, which is composed of a five-layer composite structure. The back panel body 10 includes a wear-resistant and flame-retardant surface layer 11, a perforated sound-absorbing layer 12, a sound-insulating layer 13, a damping layer 14, and a supporting back panel 15, arranged sequentially. Each layer is integrally formed by hot pressing. The wear-resistant and flame-retardant surface layer 11 can effectively block external fire sources and delay the spread of flames. The perforated sound-absorbing layer 12 and the sound-insulating layer 13 can efficiently absorb mid-to-high frequency noise through micro-perforated resonance and porous sound absorption. The damping layer 14 further suppresses the transmission of structural vibration energy. This design solves the problems of insufficient flame retardancy and limited noise absorption methods in traditional seat back panels, while simultaneously meeting the requirements of flame retardancy, sound absorption, noise reduction, and structural support, thus improving the durability and reliability of the seat back panel.

[0026] The wear-resistant and flame-retardant surface layer 11 is located on the outermost layer. This layer is a composite layer formed by alternating layers of aramid fiber and carbon fiber. The aramid fiber and carbon fiber layers are sequentially and alternately stacked using a hot-pressing composite process, where heating and pressure are applied to tightly bond the stacked aramid fiber and carbon fiber layers together. The thickness of the wear-resistant and flame-retardant surface layer 11 is 0.5–0.8 mm. Aramid fibers possess high-temperature resistance, flame retardancy, and chemical corrosion resistance, providing the first line of fire protection for the back panel. In fire or high-temperature environments, it can effectively delay the spread of flames and reduce the risk of toxic smoke release. Carbon fiber, on the other hand, has wear resistance and high strength, enhancing the surface layer's scratch and impact resistance, and improving the service life of the seat back panel.

[0027] The perforated sound-absorbing layer 12 is an aluminum alloy micro-perforated plate with a pore diameter of 0.8–1.0 mm and a thickness of 1–2 mm. The micro-perforated plate can generate a resonance effect under the action of sound waves, thereby reducing noise energy.

[0028] The sound-absorbing layer 13 includes a flame-retardant resin matrix 131, the interior of which is filled with hollow ceramic microspheres 132. The flame-retardant resin matrix 131 is made of flame-retardant ABS resin. The thickness of the sound-absorbing layer 13 is 2–3 mm, and the particle size of the hollow ceramic microspheres is 20–40 μm. While maintaining the high impact resistance of ABS resin, the flame-retardant ABS resin improves its flame retardancy and mechanical properties through blending with flame-retardant polymers. The addition of hollow ceramic microspheres 132, through their porous structure and low density, improves the sound wave scattering and energy absorption capabilities of the sound-absorbing layer 13, while simultaneously reducing the material density and achieving a lightweight design. Furthermore, the processing temperature range of flame-retardant ABS resin is typically 220–260℃, while the melting point of hollow ceramic microspheres is 1700–1800℃, ensuring that the structure of the hollow ceramic microspheres will not be damaged by processing temperature.

[0029] The damping layer 14 includes a polyurethane matrix 141, on which honeycomb holes 142 are arranged in an equidistant array. Multiple support columns 143 are disposed within the polyurethane matrix 141. The thickness of the damping layer 14 is 4–6 mm. Polyurethane material possesses excellent elasticity and damping properties, effectively absorbing and dissipating vibration energy from the seat frame or external environment, thereby reducing noise generation. The honeycomb hole 142 structure, through its regularly arranged pores, further enhances the energy absorption capacity of the damping layer 14 while maintaining the material's lightweight nature. The support columns 143, by enhancing structural stiffness, avoid the strength reduction problem caused by excessive porosity.

[0030] The back panel body 10 has an arc-shaped concave portion 20 on the back side for accommodating the storage net bag. A mounting bracket 30 is fixedly connected to the back panel body 10. The mounting bracket 30 is located outside the concave portion 20 and is used to fix the storage net bag, thus realizing the accommodation and stable fixation of the storage net bag.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layered fire-retardant sound absorbing seat back panel comprising a back panel body (10), characterized in that: The back panel body (10) is composed of five layers. The back panel body (10) includes a wear-resistant and flame-retardant surface layer (11), a perforated sound-absorbing layer (12), a sound-insulating layer (13), a damping layer (14), and a supporting back panel (15) arranged in sequence. Each layer is integrally formed by hot pressing.

2. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 1, wherein, The wear-resistant and flame-retardant surface layer (11) is located on the outermost layer and is formed by alternating layers of aramid fiber layer and carbon fiber layer.

3. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 2, wherein, The thickness of the wear-resistant and flame-retardant surface layer (11) is 0.5 to 0.8 mm.

4. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 1, wherein, The perforated sound-absorbing layer (12) is an aluminum alloy micro-perforated plate with a pore diameter of 0.8 to 1.0 mm.

5. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 4, wherein, The thickness of the perforated sound-absorbing layer (12) is 1-2 mm.

6. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 1, wherein, The sound-absorbing layer (13) includes a flame-retardant resin matrix (131), the interior of which is filled with hollow ceramic microspheres (132).

7. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 6, wherein, The sound-absorbing layer (13) has a thickness of 2-3 mm, and the hollow ceramic microspheres have a particle size of 20-40 μm.

8. The multi-layer flame-retardant and noise-absorbing seat back panel as described in claim 1, characterized in that, The damping layer (14) includes a polyurethane matrix (141), on which honeycomb holes (142) are arranged in an equidistant array, and multiple support columns (143) are provided inside the polyurethane matrix (141). The thickness of the damping layer (14) is 4 to 6 mm.

9. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 1, wherein, The back panel body (10) has an arc-shaped concave portion (20) on the back side for accommodating the net bag.

10. The multi-layer, fire-blocking, sound-absorbing seat back panel of claim 9, wherein, A mounting bracket (30) is fixedly connected to the back of the back panel body (10). The mounting bracket (30) is located outside the concave portion (20) and is used to fix the net bag.

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