Lightweight sound absorbing sponge for automobiles

Abstract

The utility model relates to the field of sponge for automobile, especially sound absorption light quality sponge for automobile, including sponge body, the one side of the installation surface of sponge body is provided with installation component, and the one side of installation component is provided with butyl rubber vibration stop plate, the top of sponge body is provided with a plurality of sound absorption groove groups equidistantly, and the top of sponge body is provided with auxiliary embedding groove between adjacent two sound absorption groove groups, and the sound absorption fibre felt is embedded in auxiliary embedding groove, and the outside of sponge body, installation component is collectively coated with non -woven fabric body, in the utility model, through the setting of installation component cooperation butyl rubber vibration stop plate, make it make it sponge body and the cavity reserved between automobile installation area between a certain time, play a certain damping effect, and through the setting of sound absorption groove group and sound absorption fibre felt, absorb the noise of different frequency in a certain range, realize broadband sound absorption, improve the sound absorption performance of sponge simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of automotive sponge technology, and in particular to a lightweight sound-absorbing sponge for automobiles. Background Technology

[0002] Automotive sponges do not refer to the common absorbent sponges found in daily life, but rather to a general term for polyurethane foam or other polymer foaming materials mainly used for automotive interiors, sound insulation, shock absorption, sealing, and filtration.

[0003] Ordinary sponges typically have a uniform density and structure, with simple or consistent depth sound-absorbing grooves. This makes them primarily effective against mid-to-high frequency noise, while their absorption of annoying low-frequency noise is very limited. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lightweight sound-absorbing sponge for automobiles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lightweight sound-absorbing sponge for automobiles includes a sponge body, a mounting component is provided on one side of the mounting surface of the sponge body, and a butyl rubber vibration damping plate is provided on one side of the mounting component.

[0007] The top of the sponge body is provided with multiple sound-absorbing grooves at equal intervals, and the top of the sponge body is provided with auxiliary grooves between two adjacent sound-absorbing grooves, and sound-absorbing fiber felt is embedded in the auxiliary grooves. The sponge body and the installation components are covered with a non-woven fabric body.

[0008] Furthermore, a preferred structure is that the sound-absorbing groove group includes a sound-absorbing groove one, and sound-absorbing groove two and sound-absorbing groove three are symmetrically arranged on both sides of the sound-absorbing groove one, and the bottom of the sound-absorbing groove one, sound-absorbing groove two and sound-absorbing groove three are all set to be wavy.

[0009] Furthermore, in a preferred configuration, the depth of the first sound-absorbing groove is less than the depth of the second sound-absorbing groove, and the depth of the second sound-absorbing groove is less than the depth of the third sound-absorbing groove.

[0010] Furthermore, in a preferred configuration, the bottom cross-section of the auxiliary groove is arc-shaped, and the top surface of the sound-absorbing fiber felt is flush with the top surface of the sponge body.

[0011] Furthermore, in a preferred configuration, the mounting assembly includes two mounting plates, which are respectively disposed at both ends of the mounting surface of the sponge body.

[0012] Furthermore, in a preferred configuration, a plurality of mounting plates are installed at equal intervals between the two mounting plates two.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this invention, by installing components in conjunction with butyl rubber vibration damping plates, a certain cavity is reserved between the sponge body and the area to be installed on the car, which at the same time plays a certain role in vibration reduction. Furthermore, by setting up sound-absorbing grooves and sound-absorbing fiber felt, noise of different frequencies within a certain range is absorbed, achieving wide-frequency sound absorption and improving the sound absorption performance of the sponge. Attached Figure Description

[0015] Figure 1 This is a partial cross-sectional structural diagram of a lightweight sound-absorbing sponge for automobiles proposed in this utility model;

[0016] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is a partially disassembled and cross-sectional structural diagram of a lightweight sound-absorbing sponge for automobiles proposed in this utility model;

[0018] Figure 4 This is a partial structural diagram of a lightweight sound-absorbing sponge for automobiles proposed in this utility model.

[0019] In the diagram: 1. Sponge body; 11. Sound-absorbing groove group; 12. Auxiliary groove; 2. Mounting components; 21. Mounting plate one; 22. Mounting plate two; 3. Non-woven fabric body; 4. Butyl rubber vibration damping plate; 5. Sound-absorbing fiber felt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A lightweight sound-absorbing sponge for automobiles includes a sponge body 1, an mounting component 2 is provided on one side of the mounting surface of the sponge body 1, and a butyl rubber vibration damping plate 4 is provided on one side of the mounting component 2; wherein the butyl rubber vibration damping plate 4 plays a certain role in vibration reduction.

[0022] Meanwhile, multiple sound-absorbing groove groups 11 are evenly spaced on the top of the sponge body 1, and auxiliary grooves 12 are provided between two adjacent sound-absorbing groove groups 11 at the top of the sponge body 1. Sound-absorbing fiber felt 5 is embedded in the auxiliary grooves 12. The sponge body 1 and the installation component 2 are covered with a non-woven fabric body 3, which is a high flow resistance non-woven fabric.

[0023] The sound-absorbing groove group 11 includes a first sound-absorbing groove, with a second and a third sound-absorbing groove symmetrically arranged on both sides of the first sound-absorbing groove. The bottoms of the first, second, and third sound-absorbing grooves are all wavy. The depth of the first sound-absorbing groove is less than the depth of the second sound-absorbing groove, and the depth of the second sound-absorbing groove is less than the depth of the third sound-absorbing groove. By setting the first, second, and third sound-absorbing grooves with different depths, the sound absorption performance of the sponge body 1 is improved, and the wavy bottoms increase the surface area of ​​the bottoms of the first, second, and third sound-absorbing grooves.

[0024] The bottom cross-section of the auxiliary groove 12 is arc-shaped, and the top surface of the sound-absorbing fiber felt 5 is flush with the top surface of the sponge body 1, ensuring the flatness of the end surfaces of the sound-absorbing fiber felt 5 and the sponge body 1. Furthermore, the sound absorption performance of the sponge body 1 is improved by the setting of the sound-absorbing fiber felt 5.

[0025] The mounting assembly 2 includes two mounting plates 22, which are respectively disposed at both ends of the mounting surface of the sponge body 1. Multiple mounting plates 21 are installed at equal intervals between the two mounting plates 22. It is noteworthy that a single sound-absorbing groove group 11 is located between two adjacent mounting plates 21. Through the arrangement of the mounting assembly 2, when the sponge is connected to the area to be installed on the vehicle, a certain cavity is reserved between the sponge body 1 and the area to be installed, thus separating the sound-absorbing sponge from the area to be installed to a certain extent and reducing vibration transmission.

[0026] In this embodiment, by setting the installation component 2, when the sponge is connected to the area to be installed on the car, a certain cavity is reserved between the sponge body 1 and the area to be installed on the car. At the same time, by setting the butyl rubber vibration damping plate 4 on one side of the installation component 2, a certain vibration reduction effect is achieved.

[0027] Meanwhile, by opening sound-absorbing grooves of different depths and with wavy bottoms on the surface of the sponge body 1, the sound absorption performance of the sponge body 1 is improved, while the surface area of ​​the bottom of the sound-absorbing grooves is increased. When the sound waves enter the grooves, they will undergo multiple reflections, interferences and frictions between the wavy concave and convex surfaces, thereby improving the sound absorption performance.

[0028] Furthermore, the sound absorption performance of the sponge body 1 is further enhanced by the addition of the sound-absorbing fiber felt 5.

[0029] Meanwhile, the non-woven fabric body 3 provides a certain degree of dust protection for the sponge body 1 and the sound-absorbing fiber felt, and its material is a high flow resistance material, which can also provide a certain degree of sound absorption.

[0030] In this invention, by using the installation component 2 in conjunction with the butyl rubber vibration damping plate 4, a certain cavity is reserved between the sponge body 1 and the area to be installed on the car, which at the same time plays a certain role in vibration reduction. Furthermore, by using the sound-absorbing groove group 12 and the sound-absorbing fiber felt 5, noise of different frequencies within a certain range is absorbed, achieving wide-frequency sound absorption and improving the sound absorption performance of the sponge.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightweight sound-absorbing sponge for automobiles, comprising a sponge body (1), characterized in that, The sponge body (1) has an installation component (2) on one side of its mounting surface, and a butyl rubber vibration damping plate (4) is provided on one side of the installation component (2). The top of the sponge body (1) is provided with multiple sound-absorbing groove groups (11) at equal intervals, and the top of the sponge body (1) is provided with auxiliary grooves (12) between two adjacent sound-absorbing groove groups (11), and sound-absorbing fiber felt (5) is embedded in the auxiliary grooves (12). The sponge body (1) and the installation component (2) are covered with a non-woven fabric body (3).

2. The lightweight sound-absorbing sponge for automobiles according to claim 1, characterized in that, The sound-absorbing groove group (11) includes a sound-absorbing groove one, and sound-absorbing groove two and sound-absorbing groove three are arranged symmetrically on both sides of the sound-absorbing groove one. The bottom of the sound-absorbing groove one, sound-absorbing groove two and sound-absorbing groove three are all set to be wavy.

3. The lightweight sound-absorbing sponge for automobiles according to claim 2, characterized in that, The depth of the first sound-absorbing groove is less than the depth of the second sound-absorbing groove, and the depth of the second sound-absorbing groove is less than the depth of the third sound-absorbing groove.

4. The lightweight sound-absorbing sponge for automobiles according to claim 1, characterized in that, The bottom cross-section of the auxiliary groove (12) is arc-shaped, and the top surface of the sound-absorbing fiber felt (5) is flush with the top surface of the sponge body (1).

5. The lightweight sound-absorbing sponge for automobiles according to claim 1, characterized in that, The mounting assembly (2) includes two mounting plates (22), which are respectively disposed at both ends of the mounting surface of the sponge body (1).

6. The lightweight sound-absorbing sponge for automobiles according to claim 5, characterized in that, Multiple mounting plates (21) are installed at equal distances between the two mounting plates (22).

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