Automotive lining sound insulation and heat insulation sealing assembly

Abstract

The utility model discloses a vehicle lining sound insulation and heat insulation sealing assembly which comprises a lining sheet, the lining sheet is formed by pressing through a die, a honeycomb groove is formed in the surface of the lining sheet, the honeycomb groove is composed of a plurality of hexagonal groove units, and a round through hole is formed in the center of each hexagonal groove unit. The EVA layer wraps the lining sheet, and the edge of the EVA layer is provided with a turnup lip edge; the PU layer is hot-melted on the surface of the EVA layer; the non-woven fabric layer is adhered to the surface of the PU layer. The lining sheet plays a role in lining supporting, the honeycomb grooves are matched with the circular through holes to enhance noise reduction and heat insulation, and meanwhile the EVA layer, the PU layer and the non-woven fabric layer are matched with one another to enhance the sound insulation and heat insulation performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive internal sealing, heat insulation and sound insulation components, specifically, it relates to a sound insulation and heat insulation sealing component for automotive interior linings. Background Technology

[0002] Automotive interior sound insulation and heat insulation sealing components are sound insulation and heat insulation material packages designed to improve the overall NVH performance of a vehicle. Examples include front bulkhead sound insulation pads, carpets, engine hood heat insulation cotton, headliner sound-absorbing cotton, and spare tire covers. They are a practical method that effectively blocks noise transmission and provides heat insulation. Currently, sound insulation and heat insulation sealing components are made from a single piece of PU hot-pressed non-woven fabric. While they provide protection and heat insulation, their noise absorption is relatively poor, especially at the edges. Furthermore, the temperature of the vehicle's own power components or the external environment can cause the entire component to heat up and deform, affecting its overall strength and durability. Utility Model Content

[0003] In view of this, the technical problem to be solved by this utility model is to provide a sound insulation and heat insulation sealing component for automotive linings, so as to avoid the trouble of the previous lining components having a simple structure and poor overall heat insulation and sound insulation effect.

[0004] To solve the above-mentioned technical problems, this utility model discloses a vehicle inner lining sound insulation and heat insulation sealing component, which includes an inner lining sheet, which is formed by molding and has honeycomb grooves on its surface. The honeycomb grooves are composed of multiple hexagonal groove units, and each hexagonal groove unit has a circular through hole at its center.

[0005] An EVA layer is wrapped around the inner lining sheet, and the edges of the EVA layer are provided with raised lips;

[0006] A PU layer that is hot-melted onto the surface of the EVA layer;

[0007] A non-woven fabric layer adhered to the surface of the PU layer.

[0008] According to one embodiment of the present invention, the hexagonal groove unit is raised or recessed.

[0009] According to one embodiment of the present invention, the diameter of the circular through hole is 2-4 mm.

[0010] According to one embodiment of the present invention, the thickness of the inner lining sheet is 0.5-1.5 mm.

[0011] According to one embodiment of the present invention, the lip surface is provided with multiple undercuts.

[0012] Compared with the prior art, the present invention can achieve the following technical effects:

[0013] The inner lining sheet provides support, while the honeycomb grooves and circular through holes enhance sound absorption and heat insulation. At the same time, the EVA layer, PU layer, and non-woven fabric layer work together to further enhance sound and heat insulation performance.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of a vehicle interior lining sound insulation and heat insulation sealing assembly according to an embodiment of this utility model.

[0017] Attached Figure Labels

[0018] The inner lining sheet is 10 layers long, the EVA layer is 20 layers long, the PU layer is 30 layers long, and the non-woven fabric layer is 40 layers long. Detailed Implementation

[0019] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0020] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a vehicle interior liner sound insulation and heat insulation sealing assembly according to an embodiment of the present invention. As shown in the figure, a vehicle interior liner sound insulation and heat insulation sealing assembly includes an inner liner sheet 10, which is formed by molding and has honeycomb grooves on its surface. The honeycomb grooves are composed of multiple hexagonal groove units, and each hexagonal groove unit has a circular through hole at its center; an EVA layer 20 covering the inner liner sheet 10, the edges of which are provided with raised lips; a PU layer 30 heat-fused to the surface of the EVA layer 20; and a non-woven fabric layer 40 adhered to the surface of the PU layer 30.

[0021] In one embodiment of this utility model, the inner lining sheet 10 serves as an internal support component and can be made of lightweight PET material. Its surface is molded into a honeycomb shape, i.e., honeycomb grooves. Each hexagonal groove in the honeycomb has a central circular through-hole, which enhances sound insulation. An EVA layer 20 covers the inner lining sheet 10, improving its strength and heat insulation sealing. Additionally, a PU layer 30 and a non-woven fabric layer 40 are bonded to the outer side. All three effectively improve heat and sound insulation, are lightweight, and their combined effect is even better. Together with the innermost inner lining sheet 10, they ensure sufficient strength, are not easily deformed, and are highly durable.

[0022] The edge of the EVA layer 20 is provided with a raised lip to form an extension, which can enhance the sealing effect at the end. Furthermore, the lip surface is provided with multiple undercuts to improve the stability of installation.

[0023] The honeycomb groove uneven design of this utility model, that is, the hexagonal groove unit is raised or recessed, preferably the connected hexagonal groove units are staggered to form a thicker two-sided gap, which increases the heat insulation and sound insulation stroke and has a better effect.

[0024] The circular through-hole has a diameter of 2-4mm, providing good sound insulation.

[0025] In addition, the inner lining sheet 10 has a thickness of 0.5-1.5mm, making it lightweight and durable.

[0026] In summary, this utility model uses an inner lining sheet to provide inner support, honeycomb grooves combined with circular through holes to enhance sound absorption and heat insulation, and the EVA layer, PU layer and non-woven fabric layer work together to enhance sound insulation and heat insulation performance.

[0027] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A thermally and acoustically insulating, sealed, lined automotive component, characterized in that, It comprises: an inner lining sheet, which is pressed by a mold and has a honeycomb groove on its surface, the honeycomb groove is composed of a plurality of hexagonal groove units, and a circular through hole is arranged at the center of each hexagonal groove unit; an EVA layer covering the inner lining sheet, the edge of the EVA layer is provided with a raised lip; a PU layer fused on the surface of the EVA layer; a non-woven fabric layer adhered to the surface of the PU layer.

2. The thermally and acoustically insulating sealed automotive lining assembly of claim 1, wherein, The hexagonal groove units are convex or concave.

3. The thermally and acoustically insulating sealed automotive lining assembly of claim 1, wherein, The diameter of the circular through hole is 2-4 mm.

4. The thermally and acoustically insulating sealed automotive lining assembly of claim 1, wherein, The thickness of the inner lining sheet is 0.5-1.5 mm.

5. The thermally and acoustically insulating sealed automotive lining assembly of claim 1, wherein, The surface of the lip is provided with multiple inverted buckles.

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