Sealing and sound insulation expansion sheet for vehicle

Abstract

The utility model discloses a sealed soundproof vehicle expansion sheet which comprises an expansion sheet main body, wear-resistant layers are arranged on the upper side and the lower side of the expansion sheet main body, a waterproof layer is arranged in the expansion sheet main body, a base material layer is arranged below the waterproof layer, a reinforcing layer is arranged below the base material layer, and the reinforcing layer is arranged below the base material layer. A sound insulation layer is arranged below the reinforcing layer, a flame-retardant layer is attached to the lower portion of the sound insulation layer, and a sealing layer is arranged below the flame-retardant layer. According to the sealing and sound-insulating expansion sheet for the vehicle, the sound-insulating layer and the sealing layer are used in cooperation, the sound-insulating layer is made of a sound-insulating foam material, the sound-insulating foam material has the characteristics of being light and porous and can absorb sound wave energy and reduce reflection and transmission of sound, so that outside noise can be effectively shielded when a person sits in the vehicle, and the sealing layer is made of a rubber material; the rubber material has excellent elasticity and sealing performance and can be tightly attached to various irregular surfaces, and leakage of gas or liquid is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion sheets, and particularly to a sealing and sound-insulating expansion sheet for vehicles. Background Technique

[0002] An expansion sheet is a material used for filling and sealing the internal cavities of an automobile. By injecting a non-toxic foaming material, it fills the entire internal cavity, thereby reducing resonance and noise during driving, improving the quietness and comfort inside the vehicle. This material is very effective in blocking air-borne sound and has the ability to absorb sound. In automobile manufacturing, expansion sheets are usually placed in the smaller cross-section cavities of the vehicle body, such as the A / B / C / D pillars, etc.

[0003] However, the existing expansion sheet materials have insufficient sealing and sound-insulating effects, and people can still hear external noises when sitting inside the vehicle, resulting in poor practicability. Therefore, this application provides a sealing and sound-insulating expansion sheet for vehicles to meet the requirements. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sealing and sound-insulating expansion sheet for vehicles to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sealing and sound-insulating expansion sheet for vehicles, including an expansion sheet main body, wear-resistant layers are arranged on both the upper and lower sides of the expansion sheet main body, a waterproof layer is arranged inside the expansion sheet main body, a base material layer is arranged below the waterproof layer, a strengthening layer is arranged below the base material layer, a sound-insulating layer is arranged below the strengthening layer, a flame-retardant layer is attached below the sound-insulating layer, and a sealing layer is arranged below the flame-retardant layer.

[0006] Preferably, the wear-resistant layer is adhesively connected to the expansion sheet main body, and the wear-resistant layer is symmetrically arranged with respect to the central axis of the expansion sheet main body.

[0007] Preferably, the waterproof layer is made of polyethylene, and the size of the waterproof layer matches that of the expansion sheet main body.

[0008] Preferably, reinforcing ribs are arranged inside the strengthening layer, and the reinforcing ribs are evenly distributed inside the strengthening layer.

[0009] Preferably, the sound-insulating layer is composed of sound-insulating foam material, and the sound-insulating layer is adhesively connected to the strengthening layer.

[0010] Preferably, the sealing layer is attached and abuts against the lower part of the flame-retardant layer, and the sealing layer and the flame-retardant layer are used in cooperation.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. A sealed soundproofing expansion sheet for a car, which is used in combination with a soundproofing layer and a sealing layer. The soundproofing layer is composed of a soundproofing foam material, which has the characteristics of being light and porous, and can absorb sound wave energy, reduce the reflection and transmission of sound, so that people sitting in the car can effectively shield external noise. The sealing layer is made of a rubber material, which has excellent elasticity and sealing performance, can fit tightly to various irregular surfaces, and effectively prevent the leakage of gas or liquid;

[0013] 2. This sealing and soundproofing expansion piece for vehicles has a wear-resistant layer, a reinforcing layer and reinforcing ribs. The wear-resistant layer can improve the wear resistance of the expansion piece body, thereby avoiding damage to the surface of the expansion piece body that affects the sealing effect. The reinforcing ribs are made of glass fiber, which has excellent strength and toughness, can effectively enhance the mechanical properties of the expansion piece body, and can improve the expansion piece body's resistance to stretching, compression and tearing, and is not easily deformed or damaged when subjected to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional structural diagram of the main body of the expansion piece of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the reinforcing layer of the utility model.

[0017] In the figure: 1. expansion sheet body; 2. wear-resistant layer; 3. waterproof layer; 4. base material layer; 5. reinforcement layer; 6. reinforcement ribs; 7. sound insulation layer; 8. flame retardant layer; 9. sealing layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1-3, the present utility model provides a technical solution: a sealed and sound-insulating vehicle expansion sheet, which includes an expansion sheet main body 1. Wear-resistant layers 2 are provided on both the upper and lower sides of the expansion sheet main body 1. The wear-resistant layers 2 are adhesively connected to the expansion sheet main body 1. The wear-resistant layers 2 are symmetrically arranged with respect to the central axis of the expansion sheet main body 1. The wear-resistant layers 2 can improve the wear resistance of the expansion sheet main body 1, thereby preventing damage to the surface of the expansion sheet main body 1 and affecting the sealing effect. A waterproof layer 3 is provided inside the expansion sheet main body 1. The material of the waterproof layer 3 is polyethylene. The waterproof layer 3 matches the size of the expansion sheet main body 1 and has excellent waterproof performance, capable of effectively isolating moisture and preventing moisture penetration. A base material layer 4 is provided below the waterproof layer 3, and a reinforcing layer 5 is provided below the base material layer 4. Reinforcing ribs 6 are provided inside the reinforcing layer 5. The reinforcing ribs 6 are evenly distributed inside the reinforcing layer 5. The material of the reinforcing ribs 6 is glass fiber, which has excellent strength and toughness and can effectively enhance the mechanical properties of the expansion sheet main body 1, capable of improving the tensile resistance, compressive resistance, and tear resistance of the expansion sheet main body 1 and being not easily deformed or damaged when subjected to external forces;

[0020] Please refer to Figure 2 , a sound-insulating layer 7 is provided below the reinforcing layer 5. The sound-insulating layer 7 is composed of sound-insulating foam material. The sound-insulating layer 7 is adhesively connected to the reinforcing layer 5. The sound-insulating foam material has the characteristics of being lightweight and porous, capable of absorbing sound wave energy, reducing sound reflection and transmission, so that people sitting in the car can effectively shield external noise. A flame-retardant layer 8 is attached below the sound-insulating layer 7, and a sealing layer 9 is provided below the flame-retardant layer 8. The sealing layer 9 is in contact with the lower side of the flame-retardant layer 8. The sealing layer 9 and the flame-retardant layer 8 are used in cooperation. The material of the sealing layer 9 is rubber material. The rubber material has excellent elasticity and sealing performance, capable of closely fitting various irregular surfaces and effectively preventing leakage of gas or liquid.

[0021] Working principle: When using this sealed and sound-insulating vehicle expansion sheet, first install the expansion sheet main body 1 in the car. Through the setting of the sound-insulating layer 7, it can absorb sound wave energy, reduce sound reflection and transmission, so that people sitting in the car can effectively shield external noise and improve the comfort of vehicle use. Secondly, the material of the sealing layer 9 is rubber material. The rubber material has excellent elasticity and sealing performance, capable of closely fitting various irregular surfaces and effectively preventing leakage of gas or liquid. The wear-resistant layer 2 can improve the wear resistance of the expansion sheet main body 1, thereby preventing damage to the surface of the expansion sheet main body 1 and affecting the sealing effect. Just like this, the use process of this sealed and sound-insulating vehicle expansion sheet is completed.

[0022] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing and soundproofing expansion sheet for a vehicle, comprising an expansion sheet body (1), characterized in that: The upper and lower sides of the expansion sheet body (1) are both provided with a wear-resistant layer (2); the interior of the expansion sheet body (1) is provided with a waterproof layer (3); a base material layer (4) is provided below the waterproof layer (3); a reinforcement layer (5) is provided below the base material layer (4); a sound insulation layer (7) is provided below the reinforcement layer (5); a flame retardant layer (8) is bonded below the sound insulation layer (7); and a sealing layer (9) is provided below the flame retardant layer (8).

2. A sealing and soundproofing expansion sheet for a vehicle according to claim 1, characterized in that: The wear-resistant layer (2) is connected to the expansion piece body (1) by adhesive bonding, and the wear-resistant layer (2) is symmetrically arranged with respect to the central axis of the expansion piece body (1).

3. The sealing and sound-insulating expansion sheet for vehicles according to claim 1, characterized in that: The material of the waterproof layer (3) is polyethylene, and the size of the waterproof layer (3) matches that of the expansion sheet body (1).

4. The sealing and sound-insulating expansion sheet for vehicles according to claim 1, characterized in that: Reinforcing ribs (6) are arranged inside the reinforcing layer (5), and the reinforcing ribs (6) are distributed at equal intervals inside the reinforcing layer (5).

5. The sealing and sound-insulating expansion sheet for vehicles according to claim 1, characterized in that: The sound insulation layer (7) is composed of a sound insulation foam material, and the sound insulation layer (7) is connected to the reinforcement layer (5) by adhesive bonding.

6. The sealing and sound-insulating expansion sheet for vehicles according to claim 1, characterized in that: The sealing layer (9) is in contact with the lower side of the flame retardant layer (8), and the sealing layer (9) and the flame retardant layer (8) are used in conjunction with each other.

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