Flame-retardant waterproof multi-layer composite sound-absorbing cotton structure for automobile

Abstract

The flame-retardant waterproof multi-layer composite sound-absorbing cotton structure sequentially comprises a sound-absorbing outer layer, a waterproof layer, a flame-retardant layer and a sound-absorbing inner layer from top to bottom, and a plurality of sound-absorbing holes and rod holes are formed in the surface of the sound-absorbing outer layer; water collecting boxes are arranged in the sound absorbing holes in an up-down sliding mode, water absorbing bars are arranged in the bar holes in an up-down sliding mode, the water collecting boxes are connected with the corresponding water absorbing bars through air bag rods, the water collecting boxes are used for pressing one ends of the air bag rods downwards to enable the other ends of the air bag rods to push the water absorbing bars upwards, springs are arranged in one ends of the air bag rods, and waterproof pieces are arranged at the tops of the water absorbing bars. Through the arrangement of the water collection box and the water absorption rod, after the water collection box collects water and sinks, the water absorption rod can be driven to be lifted to the surface of the sound absorption outer layer, then accumulated water on the surface of the sound absorption outer layer is absorbed, and the surface of the sound absorption cotton with the structures of the sound absorption holes is prevented from being permeated by water.

Description

Technical Field

[0001] The utility model relates to the technical field of sound-absorbing cotton, in particular to a multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness. Background Technique

[0002] Automobile noise not only increases the fatigue of drivers and passengers, but also affects the driving safety of automobiles. On the other hand, noise also has serious adverse effects on the digestive system and cardiovascular system, causing indigestion, loss of appetite, nausea and vomiting, thus leading to an increase in the incidence of stomach diseases and gastric ulcer diseases, and making the incidence of hypertension, arteriosclerosis and coronary heart disease significantly higher than normal. Noise also has an adverse effect on the visual organs.

[0003] The sound-absorbing cotton structure with sound-absorbing holes has a good sound-absorbing effect, but the structure of the sound-absorbing holes will reduce the sound-absorbing effect due to water accumulation, and may cause internal structure corrosion, damaging the structure and performance of the automobile. Therefore, the present utility model designs a multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness to alleviate the above problems. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness.

[0005] The technical solution of the utility model is: a multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness, which sequentially includes a sound-absorbing outer layer, a waterproof layer, a flame-retardant layer and a sound-absorbing inner layer from top to bottom. A number of sound-absorbing holes and rod holes are provided on the surface of the sound-absorbing outer layer; a water collecting box is slidably arranged up and down in the sound-absorbing hole, and a water absorbing rod is slidably arranged up and down in the rod hole. The water collecting box and the corresponding water absorbing rod are connected by an airbag rod, which is used to push up the water absorbing rod at the other end by pressing one end of the airbag rod by the water collecting box. And a spring is arranged in one end of the airbag rod. A waterproof sheet is arranged at the top of the water absorbing rod.

[0006] Further, a plurality of waterproof sheets are equidistantly arranged on the water absorbing rod, and the water absorbing rod is made of a water absorbing material.

[0007] Note: The plurality of waterproof sheets divide the water absorbing rod into an independent multi-section type, which can self-regulate the water absorption stage according to the lifting situation, and can accelerate the drying and recovery rate of the subsequent water absorbing rod.

[0008] Further, the shape of the sound-absorbing hole is circular or square.

[0009] Note: The circular hole is beneficial to evenly disperse the sound wave energy and reduce the reflection intensity; the rectangular hole can provide a larger opening rate per unit area, which helps to further improve the sound-absorbing effect.

[0010] Furthermore, several of the sound-absorbing holes are arranged and distributed at equal intervals on the sound-absorbing outer layer, and multiple rows of rod holes are provided between adjacent rows of sound-absorbing holes.

[0011] Note: The equal-spacing arrangement of the sound-absorbing holes is not only aesthetically pleasing but also capable of efficiently capturing and diffusing sounds in different frequency bands, avoiding harmful standing wave phenomena, and achieving balanced sound absorption across all frequency bands.

[0012] Furthermore, a water-blocking outer film is provided on both the surface of the sound-absorbing outer layer and the inner wall of the sound-absorbing holes.

[0013] Note: The water-blocking outer film is provided to prevent water from seeping into the interior of the sound-absorbing outer layer from its surface and damaging the sound-absorbing structure, further enhancing the waterproof effect of the sound-absorbing outer layer.

[0014] Furthermore, a moisture-absorbing cotton is provided at the bottom inside the water-collecting box.

[0015] Note: The moisture-absorbing cotton absorbs the accumulated water in the water-collecting box, preventing the accumulated water from splashing under the action of the shaking of the vehicle, etc., and reducing the contact area between the accumulated water and the sound-absorbing holes, thereby reducing the impact on the sound-absorbing effect of the sound-absorbing holes.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The sound-absorbing cotton of the present utility model is provided with a water-collecting box on the sound-absorbing holes, and uses the water-collecting pressure in the water-collecting box to control the lifting of the water-absorbing rod at the rod holes to absorb the accumulated water on the surface of the sound-absorbing outer layer, preventing the surface of the sound-absorbing cotton with such a structure as sound-absorbing holes from being penetrated by water, and further protecting the sound-absorbing effect of the sound-absorbing holes by enhancing the waterproof effect. Description of the Drawings

[0018] Figure 1 is the overall appearance view of Embodiment 1 of the sound-absorbing cotton of the present utility model;

[0019] Figure 2 is the internal structure view of the sound-absorbing outer layer of Embodiment 1 of the sound-absorbing cotton of the present utility model;

[0020] Figure 3 is the structure view of the water-absorbing rod of Embodiment 1 of the sound-absorbing cotton of the present utility model;

[0021] Figure 4 is the structure view of the water-absorbing rod of Embodiment 2 of the sound-absorbing cotton of the present utility model;

[0022] Figure 5 is the overall appearance view of Embodiment 3 of the sound-absorbing cotton of the present utility model;

[0023] Among them, 1 - sound-absorbing outer layer, 11 - water-absorbing rod, 12 - water-collecting box, 13 - sound-absorbing hole, 14 - rod hole, 15 - outer film, 2 - waterproof layer, 3 - flame-retardant layer, 4 - sound-absorbing inner layer. Detailed Embodiment

[0024] The present utility model will be further described in detail in combination with specific embodiments to better reflect the advantages of the present utility model.

[0025] Embodiment 1

[0026] A multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness, as Figures 1 to 3 shown, sequentially includes a sound-absorbing outer layer 1, a waterproof layer 2, a flame-retardant layer 3, and a sound-absorbing inner layer 4 from top to bottom. A plurality of sound-absorbing holes 13 and rod holes 14 are provided on the surface of the sound-absorbing outer layer 1; a water collecting box 12 is slidably arranged up and down in the sound-absorbing hole 13, and a water absorbing rod 11 is slidably arranged up and down in the rod hole 14. The water collecting box 12 and the corresponding water absorbing rod 11 are connected by an airbag rod, which is used to push up the water absorbing rod 11 at the other end of the airbag rod by pressing down one end of the airbag rod by the water collecting box 12. A spring is arranged in one end of the airbag rod, and a waterproof sheet is arranged at the top of the water absorbing rod 11; the airbag rod adopts a U-shaped airbag rod, and both the end of the airbag rod connected to the water absorbing rod and the end of the airbag rod connected to the water collecting box are telescopic, while the part connecting the two ends is not telescopic;

[0027] As Figure 1 shown, a plurality of the sound-absorbing holes 13 are arranged at equal intervals on the sound-absorbing outer layer 1, and three rows of rod holes 14 are arranged between two adjacent rows of sound-absorbing holes 13; the sound-absorbing outer layer 1 is made of glass fiber material, the flame-retardant layer 3 is made of rock wool material, the sound-absorbing inner layer 4 is made of polyester fiber material, the waterproof layer 2 is made of polyurethane sponge material, the water absorbing rod 11 is made of SAP material, and the waterproof sheet is made of polyurethane material.

[0028] The working principle of the above multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness is as follows: When water falls on the surface of the sound-absorbing outer layer 1, due to the structure of the sound-absorbing holes 13, part of the water flows into the water collecting box 12, and the other part of the water remains on the surface of the sound-absorbing outer layer 1. Then, the gravity of the water drives the water collecting box 12 to press down one end of the airbag rod, so that the other end of the airbag rod pushes up the water absorbing rod 11. The water absorbing rod 11 protrudes from the rod hole 14 to absorb the accumulated water on the surface of the sound-absorbing outer layer 1, preventing the water from penetrating into the interior of the sound-absorbing outer layer 1; after the water absorption is completed, the interior of the water absorbing rod 11 and the water collecting box 12 automatically returns to dryness, so that under the action of the spring inside the airbag rod, the water collecting box 12 and the water absorbing rod 11 return to their original states.

[0029] Embodiment 2

[0030] The difference between this embodiment and Embodiment 1 is that, as Figure 4 shown, a plurality of waterproof sheets are arranged at equal intervals on the water absorbing rod 11. The water absorbing rod 11 is made of a water absorbing material, and the water absorbing material is polyester fiber.

[0031] The difference in the working principle of this embodiment from that of Embodiment 1 is that multiple waterproof sheets divide the water absorption rod 11 into an independent multi-section type, which can self-adjust the water absorption stage according to the lifting situation and can accelerate the drying and recovery rate of the subsequent water absorption rod 11.

[0032] Embodiment 3

[0033] The difference between this embodiment and Embodiment 1 is that, as Figure 5 shown, a water-blocking outer membrane 15 is provided on the surface of the sound-absorbing outer layer 1 and the inner wall of the sound-absorbing holes 13, and the outer membrane 15 is made of an EPTFE membrane.

[0034] The difference in the working principle of this embodiment from that of Embodiment 1 is that the water-blocking outer membrane 15 is provided to prevent water from seeping into the interior of the sound-absorbing outer layer 1 from the surface of the sound-absorbing outer layer 1 and damaging the sound-absorbing structure, further improving the waterproof effect of the sound-absorbing outer layer 1. The EPTFE membrane is a flexible material that is breathable but impermeable to water, and has characteristics such as dust-proof, waterproof, breathable and pressure-relieving, high and low temperature resistance, and corrosion resistance, and can also achieve a good waterproof effect.

[0035] Embodiment 4

[0036] The difference between this embodiment and Embodiment 1 is that the shape of the sound-absorbing holes 13 is circular (not shown in the figure).

[0037] The difference in the working principle of this embodiment from that of Embodiment 1 is that the circular sound-absorbing holes 13 are beneficial to evenly disperse the sound wave energy and reduce the reflection intensity.

[0038] Embodiment 5

[0039] The difference between this embodiment and Embodiment 1 is that a moisture-absorbing cotton (not shown in the figure) is provided at the inner bottom of the water collection box 12, and the moisture-absorbing cotton is made of SAP material.

[0040] The difference in the working principle of this embodiment from that of Embodiment 1 is that the moisture-absorbing cotton absorbs the accumulated water in the water collection box 12, which can prevent the accumulated water from splashing under the action of the shaking of the vehicle, etc., and can reduce the contact area between the accumulated water and the sound-absorbing holes 13, thereby reducing the influence on the sound-absorbing effect of the sound-absorbing holes 13.

Claims

1. A multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness, characterized in that, It successively includes a sound-absorbing outer layer (1), a waterproof layer (2), a flame-retardant layer (3) and a sound-absorbing inner layer (4) from top to bottom. A plurality of sound-absorbing holes (13) and rod holes (14) are provided on the surface of the sound-absorbing outer layer (1); a water collecting box (12) is slidably arranged up and down in the sound-absorbing hole (13), and a water-absorbing rod (11) is slidably arranged up and down in the rod hole (14). The water collecting box (12) and the corresponding water-absorbing rod (11) are connected by an airbag rod, which is used to push up the water-absorbing rod (11) at the other end of the airbag rod by pressing one end of the airbag rod by the water collecting box (12). And a spring is arranged in one end of the airbag rod. A waterproof sheet is arranged at the top of the water-absorbing rod (11).

2. A multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness according to claim 1, characterized in that, A plurality of waterproof sheets are equidistantly arranged on the water-absorbing rod (11), and the water-absorbing rod is made of a water-absorbing material.

3. A multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness according to claim 1, characterized in that, The shape of the sound-absorbing hole (13) is circular or square.

4. A multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness according to claim 1, characterized in that, A plurality of the sound-absorbing holes (13) are arranged and distributed equidistantly on the sound-absorbing outer layer (1), and multiple rows of rod holes (14) are provided between two adjacent rows of sound-absorbing holes (13).

5. A multi-layer composite sound-absorbing cotton structure for automobiles with flame retardancy and waterproofness, characterized in that, An outer water-blocking film (15) is provided on the surface of the sound-absorbing outer layer (1) and the inner wall of the sound-absorbing hole (13).

6. A flame-retardant and waterproof multi-layer composite sound-absorbing cotton structure for automobiles according to claim 1, characterized in that, A moisture-absorbing cotton is provided at the inner bottom of the water collecting box (12).

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