Sound insulation cotton for automobile door panel

Abstract

The utility model belongs to the technical field of automobile accessories, and particularly relates to automobile door panel sound insulation cotton which comprises a sound insulation base layer, a protective layer and an edge sealing assembly part. The protective layer is connected to the surface of one side of the sound insulation base layer; the edge sealing assembly parts are respectively connected to the side end of the protective layer and the side end of the sound insulation base layer; the surface of the other side of the sound insulation base layer is provided with sound attenuation pits and sound attenuation protrusions which are alternately arranged. And at least one silencing through hole is formed in the silencing bulge. According to the utility model, a dual-silencing function can be formed; therefore, the sound insulation effect is improved, and the structural simplicity is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive parts, and particularly relates to a sound insulation cotton for automobile door panels. Background Art

[0002] Noise pollution is a major public hazard in the human living environment. It not only seriously damages our auditory nerves, cardiovascular systems, and nervous systems, but also accelerates the aging of buildings and industrial machinery, and affects the precision and service life of instruments. Automobile sound insulation is to make detailed treatments on the noise generated by the automobile engine, the vibration resonance sound generated by the tires and the ground, the friction sound caused by the gaps or aging extrusion forces of the components in the car compartment, etc. according to the performance of the vehicle and the corresponding road conditions, so as to improve the comfort of riding in the car.

[0003] However, the surfaces of some existing door panel sound insulation cottons are flatly arranged, and during use, the sound insulation effect is not good, and the noise will enter the car through the door, thus affecting the driving experience of the driver. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sound insulation cotton for automobile door panels to solve any of the above technical problems in view of the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A sound insulation cotton for automobile door panels includes a sound insulation base layer, a protective layer, and a sealing edge fitting; the protective layer is connected to one side surface of the sound insulation base layer; the sealing edge fittings are respectively connected to the side ends of the protective layer and the side ends of the sound insulation base layer; on the other side surface of the sound insulation base layer, there are alternately arranged sound absorption depressions and sound absorption protrusions; and there is at least one sound absorption through hole on the sound absorption protrusion.

[0007] Preferably, the number of the sound insulation base layers is at least two, and they are symmetrically arranged on both side surfaces of the protective layer.

[0008] Preferably, the sound absorption through hole includes a first sub-hole and a second sub-hole; the first sub-hole is inclined along the horizontal plane direction where the sound absorption protrusion is located; the second sub-hole is inclined along the horizontal plane direction where the sound absorption protrusion is located.

[0009] Preferably, the inclination angle β of the first sub-hole along the horizontal plane direction where the sound absorption protrusion is located satisfies: 30º≤β≤45º;

[0010] And / or, the inclination angle α of the second sub-hole along the horizontal plane direction where the sound absorption protrusion is located satisfies: 35º≤α≤60º.

[0011] Preferably, the relationship between the inclination angle β and the inclination angle α satisfies: β ≤ α.

[0012] Preferably, at least two first inner bumps are provided inside the first sub-hole; and all the first inner bumps are arranged in a surrounding and staggered manner along the inner wall of the first sub-hole.

[0013] Preferably, at least two second inner bumps are provided inside the second sub-hole; and all the second inner bumps are arranged in a surrounding and staggered manner along the inner wall of the second sub-hole.

[0014] Preferably, the protective layer includes a first flame-retardant layer, a tensile-resistant layer, and a second flame-retardant layer which are stacked; and the second flame-retardant layer or the first flame-retardant layer is connected to the sound insulation base layer.

[0015] Preferably, the first flame-retardant layer is a flame-retardant fiberglass cloth;

[0016] And / or, the second flame-retardant layer is a flame-retardant fiberglass cloth;

[0017] And / or, the tensile-resistant layer is a polyurethane elastic material.

[0018] Preferably, the material of the edge-sealing fitting is plastic or rubber material; the edge-sealing fitting includes a side edge-sealing and an assembly edge connected to at least one side end of the side edge-sealing; and the side edge-sealing abuts against the side end face of the sound insulation base layer and the side end face of the protective layer; the assembly edge is connected to the side surface of the sound insulation base layer or the side surface of the protective layer.

[0019] The beneficial effect of the present utility model is that, in this technical solution, sound-absorbing depressions and sound-absorbing protrusions are alternately and staggeredly arranged on the sound insulation base layer to form a wavy sound-absorbing structure; and in combination with the sound-absorbing through holes inside the sound-absorbing protrusions, a dual sound-absorbing function is formed; thereby improving the sound insulation effect and ensuring the simplicity of the structure; in addition, an edge-sealing fitting is also used for assembling with the car door panel to prevent the sound insulation base layer from being damaged during assembly, thereby improving the use stability; and also through the protection performance of the protective layer, the use stability of the sound insulation base layer can be further improved and its service life can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following will describe the features, advantages, and technical effects of the exemplary embodiments of the present utility model with reference to the attached Figures 1 to 4 to describe the features, advantages, and technical effects of the exemplary embodiments of the present utility model.

[0021] Figure 1 is a schematic structural diagram of a car door panel sound insulation cotton according to an embodiment of the present utility model;

[0022] Figure 2 is a cross-sectional view of a car door panel sound insulation cotton according to an embodiment of the present utility model;

[0023] Figure 3 Partial enlarged view of the sound insulation cotton of the car door panel according to an embodiment of the present utility model;

[0024] Figure 4 Structural schematic diagram of the edge-sealing fitting of the sound insulation cotton of the car door panel according to an embodiment of the present utility model.

[0025] In the figure: 1 - Sound insulation base layer; 11 - First mounting hole; 2 - Protective layer; 21 - First flame-retardant layer; 22 - Anti-tensile layer; 23 - Second flame-retardant layer; 3 - Edge-sealing fitting; 31 - Side edge seal; 32 - Assembly edge; 321 - Second mounting hole; 33 - Limit groove; 4 - Sound absorption depression; 5 - Sound absorption protrusion; 51 - Sound absorption through hole; 511 - First sub-hole; 513 - First inner convex block; 512 - Second sub-hole; 514 - Second inner convex block. Detailed implementation manners

[0026] 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 are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two unless otherwise specifically defined.

[0028] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and there are multiple situations where A exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0030] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0031] The following will further describe the present utility model in detail with reference to the appended Figures 1 to 4 drawings, but it is not a limitation to the present utility model.

[0032] As Figure 1 shown, in an embodiment of the present utility model, the sound insulation cotton for the car door panel; includes a sound insulation base layer 1, a protective layer 2 and a sealing edge fitting 3; the protective layer 2 is laminated and connected to one side surface of the sound insulation base layer 1; the sealing edge fitting 3 is respectively connected to the side ends of the protective layer 2 and the side ends of the sound insulation base layer 1; on the other side surface of the sound insulation base layer 1, there are alternately arranged sound absorption depressions 4 and sound absorption protrusions 5; and there is at least one sound absorption through hole 51 on the sound absorption protrusion 5.

[0033] The technical solution of the present utility model forms a wavy sound absorption structure by alternately arranging sound absorption depressions and sound absorption protrusions on the sound insulation base layer; and combines with the sound absorption through holes inside the sound absorption protrusions to form a dual sound absorption function; thereby improving the sound insulation effect and ensuring the simplicity of the structure; in addition, a sealing edge fitting is also used for assembling with the car door panel to prevent damage to the sound insulation base layer during its assembly, thereby improving the use stability; and also through the protective performance of the protective layer, the use stability of the sound insulation base layer can be further improved and its service life can be extended.

[0034] Specifically, in some embodiments, as Figure 1 and 2 shown, the number of the sound insulation base layers 1 is at least two, and they are symmetrically arranged on both side surfaces of the protective layer 2. This structure can achieve sound insulation treatment for the environments inside and outside the car door panel through the symmetrically arranged sound insulation base layers 1, thereby improving the sound insulation efficiency.

[0035] Specifically, in some embodiments, as Figure 1 and 2As shown, the sound-absorbing through-hole 51 includes a first sub-hole 511 and a second sub-hole 512; the first sub-hole 511 is inclined along the horizontal plane direction of the sound-absorbing protrusion 5; the second sub-hole 512 is inclined along the horizontal plane direction of the sound-absorbing protrusion 5. That is to say, both the first sub-hole 511 and the second sub-hole 512 are inclined through the interior in the thickness direction of the sound-absorbing protrusion 5 to increase the number of reflections of noise, thereby reducing coefficients such as the loudness of noise; further improving the sound insulation effect and ensuring the convenience of structural processing.

[0036] Specifically, in some embodiments, as Figure 2 and 3 shown, the inclination angle β of the first sub-hole 511 along the horizontal plane direction of the sound-absorbing protrusion 5 satisfies: 30º ≤ β ≤ 45º; the inclination angle α of the second sub-hole 512 along the horizontal plane direction of the sound-absorbing protrusion 5 satisfies: 35º ≤ α ≤ 60º; and β ≤ α. That is to say, the first sub-hole 511 and the second sub-hole 512 with appropriate angles and angle differences can improve the sound insulation effect and ensure the convenience of structural processing.

[0037] Specifically, in some embodiments, as Figure 3 shown, at least two first inner protrusions 513 are provided inside the first sub-hole 511; and all the first inner protrusions 513 are arranged around and staggered along the inner wall of the first sub-hole 511; to increase the number of reflections of noise, thereby reducing coefficients such as the loudness of noise; further improving the sound insulation effect and ensuring the convenience of structural processing.

[0038] Specifically, in some embodiments, as Figure 3 shown, at least two second inner protrusions 514 are provided inside the second sub-hole 512; and all the second inner protrusions 514 are arranged around and staggered along the inner wall of the second sub-hole 512; to increase the number of reflections of noise, thereby reducing coefficients such as the loudness of noise; further improving the sound insulation effect and ensuring the convenience of structural processing.

[0039] Specifically, in some embodiments, as Figure 1 and 2 and as shown in 4, at least one first mounting hole 11 is provided on the sound insulation base layer 1; at least one second mounting hole 321 corresponding to the first mounting hole 11 is provided on the edge sealing fitting 3. That is to say, the positioning rod passes through the second mounting hole 321 and the first mounting hole 11 respectively to fixedly connect the sound insulation base layer 1 and the edge sealing fitting 3 into one body; the edge sealing fitting 3 is connected to the car door panel as a whole by passing the positioning screw through the second mounting hole 321; and after assembly, one end of the positioning screw abuts against one end of the positioning rod.

[0040] Specifically, in some embodiments, as Figure 1 and 3 shown, the protective layer 2 includes a first flame-retardant layer 21, a tensile-resistant layer 22, and a second flame-retardant layer 23 which are stacked; and the second flame-retardant layer 23 or the first flame-retardant layer 21 is connected to the sound-insulating base layer 1. Wherein, the first flame-retardant layer 21 is a flame-retardant fiberglass cloth; the flame-retardant fiberglass cloth is bonded to the tensile-resistant layer 22; the second flame-retardant layer 23 is a flame-retardant fiberglass cloth; the flame-retardant fiberglass cloth is bonded to the tensile-resistant layer 22; the tensile-resistant layer 22 is a polyurethane elastic material. In this sound-absorbing cotton, its tensile-resistant performance and flame-retardant performance can be effectively increased.

[0041] Specifically, in some embodiments, as Figure 1 and 4 shown, the material of the edge-sealing fitting 3 is plastic or rubber material; the edge-sealing fitting 3 includes a side edge-sealing 31 and an assembly edge 32 connected to at least one side end of the side edge-sealing 31; and the side edge-sealing 31 abuts against the side end face of the sound-insulating base layer 1 and the side end face of the protective layer 2; the assembly edge 32 is connected to the (upper or lower) side surface of the sound-insulating base layer 1 or the (upper or lower) side surface of the protective layer 2.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0043] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the above specific embodiments. Any obvious improvements, substitutions or variations made by those skilled in the art on the basis of the present invention all belong to the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. An automotive door panel sound insulation cotton, characterized in that: It includes a sound insulation base layer, a protective layer and edge sealing fittings; the protective layer is connected to one side surface of the sound insulation base layer; the edge sealing fittings are respectively connected to the side ends of the protective layer and the side ends of the sound insulation base layer; sound absorption depressions and sound absorption protrusions are alternately arranged on the other side surface of the sound insulation base layer; and at least one sound absorption through hole is provided on the sound absorption protrusion.

2. The sound insulation cotton for the car door panel according to claim 1, characterized in that: The number of the sound insulation base layers is at least two, and they are symmetrically arranged on both side surfaces of the protective layer.

3. The sound insulation cotton for the car door panel according to claim 1 or 2, characterized in that: The sound absorption through hole includes a first sub-hole and a second sub-hole; the first sub-hole is inclined along the horizontal plane direction where the sound absorption protrusion is located; the second sub-hole is inclined along the horizontal plane direction where the sound absorption protrusion is located.

4. The sound insulation cotton for the car door panel according to claim 3, characterized in that: The inclination angle β of the first sub-hole along the horizontal plane direction where the sound absorption protrusion is located satisfies: 30º≤β≤45º; and / or, the inclination angle α of the second sub-hole along the horizontal plane direction where the sound absorption protrusion is located satisfies: 35º≤α≤60º.

5. The sound insulation cotton for the car door panel according to claim 4, characterized in that: The relationship between the inclination angle β and the inclination angle α satisfies: β≤α.

6. The sound insulation cotton for automobile door panel according to claim 3, characterized in that: At least two first inner convex blocks are provided inside the first sub-hole; and all the first inner convex blocks are arranged around and staggered along the inner wall of the first sub-hole.

7. The sound insulation cotton for the car door panel according to claim 3, wherein: At least two second inner convex blocks are provided inside the second sub-hole; and all the second inner convex blocks are arranged around and staggered along the inner wall of the second sub-hole.

8. The sound insulation cotton for the car door panel according to claim 1, characterized in that: The protective layer includes a first flame-retardant layer, a tensile-resistant layer and a second flame-retardant layer which are stacked; and the second flame-retardant layer or the first flame-retardant layer is connected to the sound insulation base layer.

9. The sound insulation cotton for the car door panel according to claim 8, characterized in that: The first flame-retardant layer is a flame-retardant fiberglass cloth; and / or, the second flame-retardant layer is a flame-retardant fiberglass cloth; and / or, the tensile-resistant layer is a polyurethane elastic material.

10. The sound insulation cotton for the car door panel according to claim 1, characterized in that: The material of the edge sealing fittings is plastic or rubber material; the edge sealing fittings include side seals and assembly edges connected to at least one side end of the side seals; and the side seals abut against the side end faces of the sound insulation base layer and the protective layer; the assembly edges are connected to the side surfaces of the sound insulation base layer or the protective layer.

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