Sound-absorbing and heat-insulating cotton for vehicle

Abstract

The utility model discloses sound-absorbing and heat-insulating cotton for vehicles, which belongs to the technical field of heat-insulating cotton for vehicles and comprises sound-absorbing and heat-insulating cotton and a plurality of mounting plates, a plurality of pressing components distributed at equal intervals are arranged at the top end of the sound-absorbing and heat-insulating cotton, a plurality of connecting components are arranged at the bottom ends of the pressing components, and a plurality of limiting components are arranged at the top ends of the mounting plates. The number of the limiting assemblies corresponds to that of the connecting assemblies, the sound-absorbing and heat-insulating cotton is located between the pressing assembly and the mounting plate, the pressing assembly is arranged on the surface of the sound-absorbing and heat-insulating cotton, the limiting assemblies and the mounting plate are arranged on the back face of the sound-absorbing and heat-insulating cotton, and the connecting assemblies penetrate through through holes in the pressing plate to be connected with the limiting assemblies. A plurality of fixing points can be formed on the surface of the sound-absorbing and heat-insulating cotton, so that after the sound-absorbing and heat-insulating cotton is used for a long time, fibers in the sound-absorbing and heat-insulating cotton are prevented from being gathered and clustered in a large area, meanwhile, the structural strength of the sound-absorbing and heat-insulating cotton can be enhanced, the sound-absorbing and heat-insulating cotton is prevented from being deformed, and the sound-absorbing and heat-insulating effects can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle heat insulation cotton, and more specifically, to a vehicle sound-absorbing and heat-insulating cotton. Background Art

[0002] The vehicle sound-absorbing and heat-insulating cotton is a material used inside an automobile, and is usually used to isolate and reduce the conduction of noise and heat inside the vehicle. This kind of heat-insulating cotton is usually installed between the sound insulation board of the vehicle or the interior trim parts of the vehicle, playing the role of sound absorption and heat insulation. It can effectively absorb the noise generated inside the vehicle, reduce the interior noise level, improve the riding comfort. At the same time, by reducing the conduction of heat, the heat-insulating cotton can help regulate the interior temperature of the vehicle, reduce the influence of external heat on the vehicle interior, and improve the air-conditioning effect.

[0003] The patent with the Chinese patent publication number CN220700623U discloses a sound-absorbing and heat-insulating cotton for vehicle door panels. Through the setting of the splicing components, it is convenient to fix the two cotton board bodies to be spliced, avoiding the existence of gaps and improving the sound-absorbing and heat-insulating effect. Through the setting of the connecting columns, multiple connecting columns can firmly fix the multi-layer materials of the cotton board body together, preventing deviation and avoiding the decline of the sound-absorbing and heat-insulating effect.

[0004] However, the sound-absorbing and heat-insulating cotton used inside the automobile door is mainly for sound absorption, so it is relatively fluffy. There is no corresponding structural constraint for the sound-absorbing and heat-insulating cotton in the above scheme. With the passage of time and use, these materials will be affected by factors such as extrusion, vibration and moisture, which easily lead to the aggregation or clustering of fiber cotton. The clustered and agglomerated structure will affect its sound-absorbing and heat-insulating effect, resulting in the decline of the sound-absorbing and heat-insulating effect.

[0005] Therefore, it is necessary to provide a vehicle sound-absorbing and heat-insulating cotton to solve the above problems. Summary of the Utility Model

[0006] The utility model provides a vehicle sound-absorbing and heat-insulating cotton, which can improve the problem in the related technology that with the passage of time and use, the sound-absorbing and heat-insulating cotton is affected by factors such as extrusion, vibration and moisture, resulting in the aggregation or clustering of fiber cotton, and the clustered and agglomerated structure will affect its sound-absorbing and heat-insulating effect, thus causing the decline of the sound-absorbing and heat-insulating effect.

[0007] An embodiment of the present application provides a vehicle sound-absorbing and heat-insulating cotton, which includes sound-absorbing and heat-insulating cotton and a plurality of mounting plates. There are a plurality of pressing components evenly distributed at equal intervals on the top end of the sound-absorbing and heat-insulating cotton. A plurality of connecting components are arranged at the bottom end of the pressing components. A plurality of limiting components are arranged at the top end of the mounting plate. The number of the limiting components corresponds to that of the connecting components. The sound-absorbing and heat-insulating cotton is located between the pressing components and the mounting plates. The pressing components include a plurality of pressing plates. Two symmetrically distributed connecting rods are fixedly connected to the top ends of the plurality of pressing plates. The pressing plates are in contact with the outer surface of the sound-absorbing and heat-insulating cotton. The surface of the sound-absorbing and heat-insulating cotton is recessed downward. The connecting components include pins. A groove is arranged at the bottom end of the pin. A plurality of expansion blocks evenly distributed in a ring shape are fixedly connected to the bottom end of the pin.

[0008] In the above technical solution of the embodiment of the present application, it has at least the following technical effects:

[0009] (1) By arranging the pressing components on the surface of the sound-absorbing and heat-insulating cotton, arranging the limiting components and the mounting plates on the back surface of the sound-absorbing and heat-insulating cotton, and connecting the connecting components through the through holes on the pressing plates to the limiting components, a plurality of fixed points can be formed on the surface of the sound-absorbing and heat-insulating cotton. Thus, after long-term use, it can prevent large-area aggregation and clustering of the fibers inside the sound-absorbing and heat-insulating cotton. At the same time, it can strengthen the structural strength of the sound-absorbing and heat-insulating cotton, prevent it from deforming, and improve the sound-absorbing and heat-insulating effect.

[0010] (2) Through the extrusion of the pressing plates on the surface of the sound-absorbing and heat-insulating cotton, a downward depression can also be formed on the surface of the sound-absorbing and heat-insulating cotton. This concave shape can use the height difference of the concave and convex peaks and valleys to disturb the flow, that is, interfere with the propagation of sound, which helps to increase the reflection and scattering of sound waves inside the material, thereby more effectively consuming sound energy and playing a part of the sound-absorbing function to improve its sound-absorbing effect.

[0011] In some embodiments, the sound-absorbing and heat-insulating cotton includes two outer layers. A sound-insulating layer, a flame-retardant layer, and a heat-insulating layer are respectively arranged between the two outer layers. The flame-retardant layer is located between the sound-insulating layer and the heat-insulating layer.

[0012] In some embodiments, the outer layer is made of aluminum foil, the sound-insulating layer is made of polyester fiber, the flame-retardant layer is made of aramid material, and the heat-insulating layer is made of aerogel.

[0013] In some embodiments, the pressing components further include a cross plate. The plurality of connecting rods are fixedly installed at the bottom end of the cross plate. Through holes are opened at the top ends of the pressing plates. Friction sleeves are installed inside the through holes. The friction sleeves are made of rubber material.

[0014] In some embodiments, the connection component further includes a mounting block, the bottom end of the mounting block is fixedly connected to the bolt, the outer end of the expansion block is provided with a plurality of limiting teeth, and the bolt is adapted to the through hole.

[0015] In some embodiments, the limiting component includes a sleeve, the bottom end of the sleeve is fixedly connected to the mounting plate, a plurality of limiting grooves are formed in the inner side wall of the sleeve, the limiting grooves are adapted to the limiting teeth, and the sleeve penetrates through the sound-absorbing and heat-insulating cotton.

[0016] In some embodiments, a pressing block is fixedly connected inside the sleeve, the vertical cross-section of the pressing block is trapezoidal, and the expansion block is located between the outer side of the pressing block and the inner side wall of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the partial enlarged structure of the present utility model;

[0020] Figure 3 It is an exploded schematic diagram of the pressing component of the present utility model;

[0021] Figure 4 It is a schematic cross-sectional view of the limiting component of the present utility model;

[0022] Figure 5 It is a schematic cross-sectional view of the connection component of the present utility model;

[0023] Figure 6 It is a schematic diagram of the internal structure of the heat-insulating cotton of the present utility model.

[0024] Explanation of the reference numerals in the drawings:

[0025] 1. Sound-absorbing and heat-insulating cotton; 11. Outer surface layer; 12. Sound-insulating layer; 13. Flame-retardant layer; 14. Heat-insulating layer;

[0026] 2. Pressing component; 21. Cross plate; 22. Connecting rod; 23. Pressing plate; 24. Friction sleeve; 25. Through hole;

[0027] 3. Mounting plate;

[0028] 4. Connecting component; 41. Mounting block; 42. Plug; 43. Expansion block; 44. Limiting tooth;

[0029] 5. Limiting component; 51. Sleeve; 52. Limiting groove; 53. Extrusion block. Detailed implementation manner

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0032] However, the sound-absorbing and heat-insulating cotton used inside the car door is mainly used for sound absorption and heat insulation, so it is relatively fluffy. With the passage of time and use, these materials will be affected by factors such as extrusion, vibration and moisture, resulting in the agglomeration or clustering of the fiber cotton. The clustered and lumped structure will affect its sound absorption and heat insulation effect, thus causing the decline of the sound absorption and heat insulation effect.

[0033] Based on this, it can improve the problem in the related technology that the sound-absorbing and heat-insulating cotton is affected by factors such as extrusion, vibration and moisture with the passage of time and use, resulting in the agglomeration or clustering of the fiber cotton. The clustered and lumped structure will affect its sound absorption and heat insulation effect, thus causing the decline of the sound absorption and heat insulation effect.

[0034] Please refer to Figures 1-6 , a vehicle sound-absorbing and heat-insulating cotton, including a sound-absorbing and heat-insulating cotton 1 and a plurality of mounting plates 3. There are a plurality of pressing components 2 evenly distributed at equal intervals at the top of the sound-absorbing and heat-insulating cotton 1. A plurality of connecting components 4 are arranged at the bottom of the pressing component 2. A plurality of limiting components 5 are arranged at the top of the mounting plate 3. The number of the limiting components 5 corresponds to that of the connecting components 4. The sound-absorbing and heat-insulating cotton 1 is located between the pressing component 2 and the mounting plate 3. The pressing component 2 includes a plurality of pressing plates 23. Two symmetrically distributed connecting rods 22 are fixedly connected to the top of each of the plurality of pressing plates 23. The pressing plate 23 abuts against the outer surface of the sound-absorbing and heat-insulating cotton 1. The surface of the sound-absorbing and heat-insulating cotton 1 is recessed downward. The connecting component 4 includes a plug 42. A groove is arranged at the bottom of the plug 42. A plurality of expansion blocks 43 evenly distributed in a ring are fixedly connected to the bottom of the plug 42.

[0035] The sound-absorbing and heat-insulating cotton 1 includes two outer layers 11, between which a sound-insulating layer 12, a flame-retardant layer 13 and a heat-insulating layer 14 are respectively arranged, and the flame-retardant layer 13 is located between the sound-insulating layer 12 and the heat-insulating layer 14.

[0036] The outer layer 11 is made of aluminum foil, the sound-insulating layer 12 is made of polyester fiber, the flame-retardant layer 13 is made of aramid material, and the heat-insulating layer 14 is made of aerogel.

[0037] The sound-absorbing and heat-insulating cotton 1 in this solution is mainly used inside the car door. The two outer layers 11 on the outer surface of the sound-absorbing and heat-insulating cotton 1 are mainly made of aluminum foil, forming a sandwich structure. The outer layer 11 can not only play the role of covering the internal materials, but also the aluminum foil has good heat-insulating performance, can reflect heat, reduce the influence of external heat on the interior of the car, which helps to keep the interior temperature stable and improve the riding comfort. The aluminum foil itself has certain moisture-proof performance, can prevent moisture from entering the sound-insulating and heat-insulating material to a certain extent, reduce the influence of moisture on the material performance, and extend the service life of the material. The sound-insulating layer 12 is located in the inner sandwich of the outer layer 11. The sound-insulating layer 12 is made of polyester fiber. The polyester fiber material has good sound-absorbing performance, can absorb sound waves and reduce the propagation of sound. When sound waves pass through the material, part of the energy will be absorbed and converted into micro-vibrations or heat energy, thereby reducing reflection and propagation and reducing the noise level. The flame-retardant layer 13 is made of aramid flame-retardant fabric, and the aramid flame-retardant fabric has a certain flame-retardant effect, which can increase its fire resistance. The heat-insulating layer 14 is made of aerogel material. Aerogel is a super-light material with excellent heat-insulating performance. The low thermal conductivity can effectively reduce heat conduction, help keep the interior temperature of the car stable, and reduce the influence of the heat inside the car. Thus, installing the sound-absorbing and heat-insulating cotton 1 inside the car door can achieve a good sound-absorbing and heat-insulating effect.

[0038] At the same time, a plurality of pressing components 2 are arranged at equal intervals on the outer surface of the sound-absorbing and heat-insulating cotton 1. A plurality of connecting components 4 are arranged at the bottom end of each pressing component 2. The connecting components 4 are mainly used to connect the limiting components 5. The limiting components 5 are installed on the mounting plate 3. The mounting plate 3 is located on the back of the sound-absorbing and heat-insulating cotton 1. A plurality of mounting holes are arranged on the sound-absorbing and heat-insulating cotton 1. The limiting components 5 will penetrate the mounting holes on the sound-absorbing and heat-insulating cotton 1. By passing through the through holes 25 on the pressing plate 23 with the connecting components 4 and connecting with the limiting components 5, a plurality of fixing points can be formed on the surface of the sound-absorbing and heat-insulating cotton 1. Thus, after long-term use, it can prevent large-area aggregation and clustering of the fibers inside the sound-absorbing and heat-insulating cotton 1, and at the same time can strengthen the structural strength of the sound-absorbing and heat-insulating cotton 1, prevent it from deforming, and can improve the sound-absorbing and heat-insulating effect.

[0039] Optionally, in some embodiments, please refer to Figure 2 and Figure 3, the pressing assembly 2 further includes a cross plate 21, a plurality of connecting rods 22 are fixedly installed at the bottom end of the cross plate 21, through holes 25 are formed at the top end of the pressing plate 23, a friction sleeve 24 is installed inside the through holes 25, and the friction sleeve 24 is made of rubber material.

[0040] At the bottom end of the above-mentioned cross plate 21, a plurality of connecting rods 22 are fixed. Every two of the plurality of connecting rods 22 form a group, and each group corresponds to the pressing plate 23 and is fixed on the pressing plate 23. Through holes 25 are formed on the pressing plate 23, and a friction sleeve 24 is arranged inside the through holes 25. The friction sleeve 24 is made of rubber. When the connecting assembly 4 passes through the friction sleeve 24, the connecting assembly 4 can be limited by friction force, so that the connecting assembly 4 is not easy to shake. By pressing the surface of the sound-absorbing and heat-insulating cotton 1 by the pressing plate 23, a downward depression can also be formed on the surface of the sound-absorbing and heat-insulating cotton 1. The shape of this depression can utilize the drop of the convex and concave peaks and valleys to disturb the flow, that is, to interfere with the propagation of sound, which helps to increase the reflection and scattering of sound waves inside the material, so as to more effectively consume sound energy, thereby playing a part of the sound-absorbing function and improving its sound-absorbing effect.

[0041] Optionally, in some embodiments, please refer to Figures 2-6 , the connecting assembly 4 further includes a mounting block 41, the bottom end of the mounting block 41 is fixedly connected to the plug pin 42, a plurality of limiting teeth 44 are arranged at the outer end of the expansion block 43, and the plug pin 42 is adapted to the through hole 25.

[0042] The limiting assembly 5 includes a sleeve 51, the bottom end of the sleeve 51 is fixedly connected to the mounting plate 3, a plurality of limiting grooves 52 are formed on the inner side wall of the sleeve 51, the limiting grooves 52 are adapted to the limiting teeth 44, and the sleeve 51 penetrates through the sound-absorbing and heat-insulating cotton 1.

[0043] An extrusion block 53 is fixedly connected inside the sleeve 51. The vertical cross-section of the extrusion block 53 is trapezoidal. The expansion block 43 is located between the outer side of the extrusion block 53 and the inner side wall of the sleeve 51.

[0044] On the inner side wall of the sleeve 51 in this solution, multiple limiting grooves 52 are provided. In the middle of its interior, an extrusion block 53 is fixed. The extrusion block 53 is arranged in a frustum shape, and its vertical cross-section is arranged in an isosceles trapezoid shape. At the top of the plug pin 42, a mounting block 41 is fixed, and at its bottom, a ring of expansion blocks 43 is fixed. At the same time, a groove adapted to the extrusion block 53 is provided at the bottom. This groove is mainly used to allow the extrusion block 53 to extend in. An outer periphery of the expansion block 43 is provided with limiting teeth 44. When the limiting teeth 44 are in contact with the limiting grooves 52, they will be engaged with each other. When the plug pin 42 is aligned with the through hole 25 and the mounting block 41 is pressed downward, the plug pin 42 and the expansion block 43 can penetrate through the through hole 25 and extend into the interior of the sleeve 51. Since the diameter of the extrusion block 53 is larger downward, when multiple expansion blocks 43 are sleeved on the outer periphery of the extrusion block 53 and continue to move downward, the multiple expansion blocks 43 will expand outward and be enlarged by the extrusion block 53, so that the limiting teeth 44 on the expansion blocks 43 are in close contact with the limiting grooves 52 on the inner wall of the sleeve 51, enabling the connecting assembly 4 to be fixed inside the sleeve 51, thereby achieving that the pressing plate 23 in the pressing assembly 2 presses the surface of the sound-absorbing and heat-insulating cotton 1.

[0045] Working principle: When installing this device, first, the limiting components 5 on the mounting plate 3 need to be aligned with the mounting holes on the sound-absorbing and heat-insulating cotton 1 one by one, so that the limiting components 5 can pass through the mounting holes on the sound-absorbing and heat-insulating cotton 1. Then, the connecting assemblies 4 on the pressing assembly 2 are aligned with the sleeves 51 one by one, and the mounting block 41 is pressed downward, so that the plug pin 42 and the expansion block 43 can penetrate through the through hole 25 and extend into the interior of the sleeve 51. Since the diameter of the extrusion block 53 is larger downward, the multiple expansion blocks 43 will expand outward and be enlarged by the extrusion block 53, so that the limiting teeth 44 on the expansion blocks 43 are in close contact with the limiting grooves 52 on the inner wall of the sleeve 51, enabling the connecting assembly 4 to be fixed inside the sleeve 51, thereby achieving that the pressing plate 23 in the pressing assembly 2 presses the surface of the sound-absorbing and heat-insulating cotton 1, forming multiple fixing points on the surface of the sound-absorbing and heat-insulating cotton 1, thereby preventing large-area aggregation and clustering of the fibers inside the sound-absorbing and heat-insulating cotton 1. At the same time, the structural strength of the sound-absorbing and heat-insulating cotton 1 can be enhanced, preventing it from deforming, and improving the sound-absorbing and heat-insulating effect.

[0046] The above is only the preferred specific implementation manner of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improvement concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A vehicle sound-absorbing and heat-insulating cotton, comprising a sound-absorbing and heat-insulating cotton (1) and a plurality of mounting plates (3), characterized in that: At the top of the sound-absorbing and heat-insulating cotton (1), there are a plurality of pressing components (2) evenly distributed at equal intervals. At the bottom end of the pressing component (2), there are a plurality of connecting components (4). At the top end of the mounting plate (3), there are a plurality of limiting components (5). The number of the limiting components (5) corresponds to that of the connecting components (4). The sound-absorbing and heat-insulating cotton (1) is located between the pressing component (2) and the mounting plate (3). The pressing component (2) includes a plurality of pressing plates (23). At the top end of each of the plurality of pressing plates (23), two symmetrically distributed connecting rods (22) are fixedly connected. The pressing plate (23) is in contact with the outer surface of the sound-absorbing and heat-insulating cotton (1), and the surface of the sound-absorbing and heat-insulating cotton (1) is recessed downward. The connecting component (4) includes a plug pin (42). At the bottom end of the plug pin (42), there is a groove. At the bottom end of the plug pin (42), a plurality of expansion blocks (43) are fixedly connected and evenly distributed in a ring shape.

2. The vehicle sound-absorbing and heat-insulating cotton according to claim 1, characterized in that: The sound-absorbing and heat-insulating cotton (1) includes two outer layers (11). Between the two outer layers (11), there are respectively a sound-insulating layer (12), a flame-retardant layer (13) and a heat-insulating layer (14). The flame-retardant layer (13) is located between the sound-insulating layer (12) and the heat-insulating layer (14).

3. The vehicle sound-absorbing and heat-insulating cotton according to claim 2, wherein: The outer layer (11) is made of aluminum foil. The sound-insulating layer (12) is made of polyester fiber. The flame-retardant layer (13) is made of aramid material. The heat-insulating layer (14) is made of aerogel.

4. A vehicle sound-absorbing and heat-insulating cotton according to claim 1, characterized in that: The pressing component (2) further includes a cross plate (21). The plurality of connecting rods (22) are all fixedly installed at the bottom end of the cross plate (21). A through hole (25) is opened at the top end of the pressing plate (23). A friction sleeve (24) is installed inside the through hole (25). The friction sleeve (24) is made of rubber material.

5. The vehicle sound-absorbing and heat-insulating cotton according to claim 4, characterized in that: The connecting component (4) further includes a mounting block (41). The bottom end of the mounting block (41) is fixedly connected to the plug pin (42). A plurality of limiting teeth (44) are arranged at the outer end of the expansion block (43). The plug pin (42) is adapted to the through hole (25).

6. The vehicle sound-absorbing and heat-insulating cotton according to claim 5, characterized in that: The limiting component (5) includes a sleeve (51). The bottom end of the sleeve (51) is fixedly connected to the mounting plate (3). A plurality of limiting grooves (52) are opened on the inner side wall of the sleeve (51). The limiting grooves (52) are adapted to the limiting teeth (44). The sleeve (51) penetrates through the sound-absorbing and heat-insulating cotton (1).

7. The vehicle sound-absorbing and heat-insulating cotton according to claim 6, characterized in that: An extrusion block (53) is fixedly connected inside the sleeve (51). The vertical cross section of the extrusion block (53) is trapezoidal. The expansion block (43) is located between the outer side of the extrusion block (53) and the inner side wall of the sleeve (51).

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