CN220864950U - Variable-density multilayer composite floor mat for vehicle - Google Patents

Abstract

The utility model provides a variable-density multi-layer composite vehicle floor mat, which comprises a surface layer, a variable-density foam layer and a waterproof layer which are sequentially distributed from top to bottom, wherein the variable-density foam layer consists of a first low-density foam layer, a high-density foam layer and a second low-density foam layer which are distributed from top to bottom, and the low-high-low variable-density foam layer is adopted.

Description

Variable-density multilayer composite floor mat for vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a variable-density multi-layer composite floor mat for a vehicle.

Background

With the development level high-speed development of the domestic automobile industry, the vehicle performance is greatly improved, the acoustic environment in the automobile is remarkably improved, commercial automobile users are continuously younger, and the requirements on silence in the automobile are higher and higher, so that higher challenges are provided for the noise reduction development of the whole automobile of the commercial automobile.

Besides the chassis vibration damper, the cab is provided with a secondary vibration damper such as an air damper or a spiral spring vibration damper, so that structural noise is better, air noise is a main source, the engine of the commercial vehicle is arranged right below the cab, therefore, sound insulation of the cab floor is crucial, the floor sheet metal thickness cannot be excessively large due to the light design requirement, the sound absorption and insulation performance of the floor mat has great influence on the acoustic performance of the cab, the floor mat mainly comprises woven surface non-woven fabrics, upright cotton and PU foam materials at present, the sound absorption performance is still available, the sound insulation performance is poor, the floor mat for the commercial vehicle needs to be compatible with the sound absorption and insulation performance, and the high sound absorption and insulation performance commercial vehicle floor mat has important significance for the noise reduction design of the whole vehicle.

Disclosure of utility model

In order to solve the problem of poor sound absorption and insulation effects of the floor mat, the utility model provides a variable-density multi-layer composite floor mat for a vehicle, which adopts the following technical scheme:

the variable-density multilayer composite floor mat for the vehicle is characterized by comprising a surface layer, a variable-density foam layer and a waterproof layer which are sequentially distributed from top to bottom, wherein the variable-density foam layer consists of a first low-density foam layer, a high-density foam layer and a second low-density foam layer which are distributed from top to bottom.

Further, the surface layer is made of TPE material.

Further, the surface layer is made of TPE material to be 3.5-4 mm.

Further, the first low-density foaming layer and the second low-density foaming layer are both high-porosity PU foaming layers with the density of 40kg/m ³.

Further, the thickness of the first low-density foaming layer and the second low-density foaming layer is 7-9 mm.

Further, the high-density foaming layer adopts a low-porosity PU foaming layer with the density of 120kg/m ³.

Further, the thickness of the high-density foaming layer is 7-9 mm.

Further, the waterproof layer is a PE film.

The utility model has the beneficial effects that:

1. the surface layer is made of TPE material, thereby achieving sound insulation effect and being convenient for modeling design;

2. The first low-density foaming layer, the high-density foaming layer and the second low-density foaming layer adopt a variable-density structure with a low-high-low structure, the surface layer, the first low-density foaming layer and the high-density foaming layer form a sound insulation structure form of a first sound insulation layer, a sound absorption layer and a sound insulation layer, the high-density foaming layer, the second low-density foaming layer and a lower ground sheet metal of the cab form a sound insulation structure form of a second sound insulation layer, the sound absorption layer and the sound insulation layer of the second low-density foaming layer form a sound insulation layer, and the sound insulation performance of the whole lower bottom plate of the cab is further improved by the double-layer high-sound insulation structure;

3. The waterproof layer adopts a PE film, so that the waterproof layer has certain sound insulation performance while being waterproof and dampproof;

4. The integral structure has high sound absorption and high sound insulation effects, has excellent noise reduction performance, and can effectively reduce the noise level in the vehicle.

Drawings

FIG. 1 is a schematic view of the structure of the present utility model

Wherein, 1-surface layer, 2-first low density foaming layer, 3-high density foaming layer, 4-second low density foaming layer, 5-waterproof layer.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

In the description of the utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the view direction or positional relationships, merely to facilitate describing the utility model, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model.

The variable-density multi-layer composite vehicle floor mat shown in fig. 1 comprises a surface layer 1, a variable-density foam layer and a waterproof layer 5 which are sequentially connected from top to bottom, wherein the variable-density foam layer consists of a first low-density foam layer 2, a high-density foam layer 3 and a second low-density foam layer 4 which are sequentially distributed from top to bottom.

Specifically, the surface layer 1 is made of TPE material, the thickness is 3.5-4 mm, the surface layer 1 can play a certain sound insulation effect, and the modeling design is easy to make.

The first low-density foaming layer 2 and the second low-density foaming layer 4 are both made of PU foaming materials with high porosity, the density of the PU foaming materials is 40kg/m ³, the thickness of the PU foaming materials is 7-9 mm, the high-density foaming layer 3 is made of PU foaming materials with low porosity, the density is 120kg/m ³, and the thickness is 7-9 mm.

The waterproof layer 5 is a PE film, plays a role in preventing water and moisture, and can further improve the sound insulation performance of the floor mat.

The surface layer 1, the first low-density foaming layer 2 and the high-density foaming layer 3 form a sound insulation structure form of a first-layer sound insulation-sound absorption-sound insulation double-layer wall in the structure, and in a ground mat laying state, the high-density foaming layer 3, the second low-density foaming layer 4 and the underground sheet metal of the cab form a sound insulation structure form of a second-layer sound insulation-sound absorption-sound insulation double-layer wall, and the whole sound insulation performance of the lower bottom plate of the cab is further improved by the double-layer high-sound insulation structure.

The device structure has high sound insulation performance while taking sound absorption performance into consideration, and the sound insulation test result is at least 10dB higher than that of a common PU foaming material floor mat.

The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that modifications may be made without departing from the principles of the utility model, and such modifications are intended to be within the scope of the utility model.

Claims (8)

1. The variable-density multilayer composite floor mat for the vehicle is characterized by comprising a surface layer, a variable-density foam layer and a waterproof layer which are sequentially distributed from top to bottom, wherein the variable-density foam layer consists of a first low-density foam layer, a high-density foam layer and a second low-density foam layer which are distributed from top to bottom.

2. The variable density, multi-layer composite vehicular floor mat of claim 1, wherein said surface layer is made of TPE material.

3. The variable density multilayer composite vehicular floor mat of claim 1 or 2, wherein the surface layer has a thickness of 3.5-4 mm.

4. The variable density, multi-layer composite automotive floor mat of claim 1, wherein the first and second low density foam layers each employ a high porosity PU foam layer having a density of 40kg/m ³.

5. The variable density, multi-layer composite vehicular floor mat of claim 1 or 4, wherein the first and second low density foam layers are each 7-9 mm thick.

6. The variable density, multi-layer composite vehicular floor mat of claim 1, wherein the high density foam layer is a low porosity PU foam layer having a density of 120kg/m ³.

7. The variable density, multi-layer composite vehicular floor mat of claim 1 or 6, wherein the high density foam layer has a thickness of 7-9 mm.

8. The variable density, multi-layer composite vehicular floor mat of claim 1, wherein the waterproof layer is a PE film.