CN210116217U

CN210116217U - Car cabin sound insulation pad that local sound insulation is strengthened

Info

Publication number: CN210116217U
Application number: CN201920262653.5U
Authority: CN
Inventors: 梁地
Original assignee: Xiangtan Huanyu Auto Parts Co Ltd
Current assignee: Xiangtan Huanyu Auto Parts Co Ltd
Priority date: 2019-03-01
Filing date: 2019-03-01
Publication date: 2020-02-28
Anticipated expiration: 2029-03-01

Abstract

The utility model provides a car cabin that local sound insulation is strengthened gives sound insulation and fills up, include: add the heavy coating PVC board of 2mm thick in the middle of the two-layer resin felt of regional (A) is strengthened in the local sound insulation of car cabin sound insulating pad, make local sound insulation and strengthen, regional (A) corresponds the engine position of car, and its hierarchical structure includes in the local sound insulation: surface non-woven fabrics layer (1), first resin felt layer (2), local PVC sheet layer (3), second resin felt layer (4) and back non-woven fabrics layer (5), surface non-woven fabrics layer (1) back non-woven fabrics layer (5) all take the gum, local PVC sheet layer (3) only set up in local reinforced area (A) gives sound insulation. The utility model discloses the hierarchy structure sets up rationally, and the processing is strengthened giving sound insulation to local doing, and whole NVH performance is superior to traditional car cabin sound insulation pad product, and product sound insulation performance promotes greatly, need not whole laying puigging, does benefit to whole car lightweight, energy-conservation, and the manufacturing cost reduces.

Description

Car cabin sound insulation pad that local sound insulation is strengthened

Technical Field

The utility model relates to an automobile parts field, more specifically relates to automotive interior spare cabin gives sound insulation and fills up.

Background

Automobile cabin gives sound insulation and fills up and installs in the front of the car cockpit, plays the effect of making an uproar that gives sound insulation, to the cabin give sound insulation and fill up, the engine is the main noise source, when the part design of reality, consider that these regions of acoustic performance need strengthen, consider that some regions of lightweight then need weaken, cabin that the present tradition was made gives sound insulation fills up can't satisfy its performance requirement, and product weight is big, is unfavorable for whole car lightweight and energy-conservation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the not enough of existence among the prior art, provide one kind and can reduce product weight, energy-conservation and satisfy the high performance, and give sound insulation and noise reduction effect good car cabin gives sound insulation and fills up the product, simultaneously greatly reduced manufacturing cost.

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

an automotive cabin acoustic mat with localized acoustic enhancement, comprising: and adding a recoating PVC plate with the thickness of 2mm between two layers of resin felts in the sound insulation local reinforced area (A) of the sound insulation pad of the automobile cabin to form local sound insulation reinforcement, wherein the sound insulation local reinforced area (A) corresponds to the engine part of the automobile.

PVC sheet material gram weight is great, and sound-insulating properties is good, sets up local syllable-dividing and strengthens the back, and product sound-insulating properties promotes greatly, need not whole laying puigging, does benefit to whole car lightweight, energy-conservation, and manufacturing cost reduces.

Further, the car cabin sound-proof pad of local sound-proof reinforcing, its hierarchical structure includes: surface non-woven fabrics layer (1), first resin felt layer (2), local PVC sheet layer (3), second resin felt layer (4) and back non-woven fabrics layer (5), surface non-woven fabrics layer (1) back non-woven fabrics layer (5) all take the gum, local PVC sheet layer (3) only set up in local reinforced area (A) gives sound insulation.

Further, the gram weight ratio of the surface non-woven fabric layer (1), the first resin felt layer (2), the local PVC board layer (3), the second resin felt layer (4) and the back non-woven fabric layer (5) is 0.24: 1: (0.5-0.8): 1: 0.24.

the utility model discloses the hierarchy sets up rationally, and the processing is strengthened giving sound insulation to local, and whole NVH performance is superior to traditional car cabin and gives sound insulation and fills up the product.

Further, the automobile cabin sound insulation pad with the local sound insulation reinforcement function is characterized in that the surface non-woven fabric layer (1), the first resin felt layer (2), the local PVC board layer (3), the second resin felt layer (4) and the back non-woven fabric layer (5) are formed in a baking, die pressing and punching mode.

Further, the local sound insulation reinforced automobile cabin sound insulation pad is characterized in that the gram weights of the surface non-woven fabric layer (1), the first resin felt layer (2), the local PVC board layer (3), the second resin felt layer (4) and the back non-woven fabric layer (5) are respectively as follows: the floor tile is characterized by comprising (by weight parts) 120 +/-10 g/square meter, (500 +/-50) g/square meter, (1700 +/-100) g/square meter, (500 +/-50) g/square meter and (120 +/-10) g/square meter, and the molded product has light weight and good sound insulation and noise reduction performance.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the sound absorption and noise reduction effects of local areas can be enhanced according to the acoustic performance requirements, and the overall NVH performance of the product is improved; 2. the weight of the finished automobile is lighter than that of the traditional product, and the light weight of the finished automobile is facilitated; 3. partial overlay of the overlay: the PVC plate reduces the production and manufacturing cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a hierarchical structure of the cabin acoustic mat according to the present invention;

in the figure: 1 is a surface non-woven fabric layer (gum); 2 is a first resin felt layer; 3 is a local PVC sheet layer; 4 is a second resin felt layer; 5 is a back non-woven fabric layer (back adhesive).

Detailed Description

The present invention will be further described with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art.

As shown in the attached drawing 1, according to acoustic performance requirements, a local sound insulation performance enhancement is made in a sound insulation local enhancement area a of the automobile cabin sound insulation pad, the sound insulation local enhancement area a corresponds to an engine part of an automobile, for the automobile cabin sound insulation pad, an engine is a main noise source, when actual part design is carried out, the areas with acoustic performance needing enhancement are considered, certain areas with light weight needing weakening are considered, and a sound insulation enhancement area a with the thickness of 2mm and the gram weight (1700 +/-100) g/square meter recoating layer is required to be added between two layers of resin felts of the automobile cabin sound insulation pad: the PVC plate has the advantages that the sound insulation performance of the PVC plate is greatly improved, the whole overlapped coating is not required to be integrally paved, the light weight and energy conservation of the whole vehicle are facilitated, and the production and manufacturing cost is reduced.

Cabin acoustic mat body hierarchy as shown in figure 2, including surface non-woven fabrics layer 1 (gum), first resin felt layer 2, local PVC sheet layer 3, second resin felt layer 4 and back non-woven fabrics layer 5 (gum), surface non-woven fabrics layer 1 (gum), first resin felt layer 2, local PVC sheet layer 3, second resin felt layer 4 and back non-woven fabrics layer 5 (gum) gram-weight ratio are 0.24: 1: (0.5-0.8): 1: 0.24, the utility model discloses the hierarchy sets up rationally, and the processing is strengthened giving sound insulation to local doing, and whole NVH performance is superior to traditional car cabin and gives sound insulation and fills up the product.

Cabin sound insulating pad body is toasted die-cut shaping by surperficial non-woven fabrics (gum) + resin felt + PVC board (part) + resin felt + back non-woven fabrics (gum), raw and other materials surface non-woven fabrics (gum), resin felt, PVC board (part), resin felt, back non-woven fabrics (gum) gram weight do respectively: the floor tile is characterized by comprising (by weight parts) 120 +/-10 g/square meter, (500 +/-50) g/square meter, (1700 +/-100) g/square meter, (500 +/-50) g/square meter and (120 +/-10) g/square meter, and the molded product has light weight and good sound insulation and noise reduction performance.

According to the cabin sound insulation pad, a sound insulation reinforcing area A with the thickness of 2mm and the weight of gram (1700 +/-100) g/square meter heavy coating is added in the middle of two layers of resin felts of the automobile cabin sound insulation pad: the PVC plate has the advantages that the sound insulation performance of the PVC plate is greatly improved, the whole PVC plate is not required to be integrally paved, the light weight and energy conservation of the whole PVC plate are facilitated, and the production and manufacturing cost is reduced.

The above embodiments are only used for illustrating the specific embodiments of the present invention, and not for limiting the present invention, and the scope of the present invention is claimed by the claims.

Claims

1. The utility model provides a car cabin sound insulation pad that local sound insulation is strengthened which characterized in that includes: and adding a recoating PVC plate with the thickness of 2mm between two layers of resin felts in the sound insulation local reinforced area (A) of the sound insulation pad of the automobile cabin to form local sound insulation reinforcement, wherein the sound insulation local reinforced area (A) corresponds to the engine part of the automobile.

2. The acoustic mat for automobile cabin with local sound insulation reinforcement according to claim 1, characterized in that the hierarchical structure thereof comprises: surface non-woven fabrics layer (1), first resin felt layer (2), local PVC sheet layer (3), second resin felt layer (4) and back non-woven fabrics layer (5), surface non-woven fabrics layer (1) back non-woven fabrics layer (5) all take the gum, local PVC sheet layer (3) only set up in local reinforced area (A) gives sound insulation.

3. The local soundproof reinforced automobile cabin soundproof pad according to claim 2, wherein the surface nonwoven fabric layer (1), the first resin felt layer (2), the local PVC plate layer (3), the second resin felt layer (4), and the back nonwoven fabric layer (5) have a grammage ratio of 0.24: 1: (0.5-0.8): 1: 0.24.

4. the local soundproof reinforced automobile cabin soundproof pad according to claim 2 or 3, wherein the surface nonwoven fabric layer (1), the first resin felt layer (2), the local PVC sheet layer (3), the second resin felt layer (4) and the back nonwoven fabric layer (5) are formed by baking, press-punching and die-cutting.

5. The local soundproof reinforced automobile cabin soundproof pad according to claim 4, wherein the grammage of the surface nonwoven fabric layer (1), the first resin felt layer (2), the local PVC sheet layer (3), the second resin felt layer (4) and the back nonwoven fabric layer (5) is: (120 +/-10) g per square meter, (500 +/-50) g per square meter, (1700 +/-100) g per square meter, (500 +/-50) g per square meter, and (120 +/-10) g per square meter.