Sound insulation type side wall baffle

Abstract

The utility model discloses a sound insulation type side wall baffle, relates to the technical field of automobile accessories, and aims to solve the problems that noise is formed by an automobile and reverse airflow in the running process, the driving experience of a driver is influenced, and the comfort is reduced. The sound attenuation layer comprises a damping sound insulation felt, a first sound absorption plate, a second sound absorption plate, a plurality of shock absorbers, a plurality of sound absorption blocks, a sound insulation plate and a thin-wall square box, the shock absorbers are arranged on the damping sound insulation felt in an array mode, the sound absorption blocks are arranged on the first sound absorption plate in an array mode, a plurality of through grooves are formed in the sound insulation plate in an array mode, and the shock absorbers are located in the through grooves respectively. The damping sound insulation felt, the first sound absorption plate, the second sound absorption plate, the shock absorber, the sound absorption block, the sound insulation plate and the thin-wall square box are arranged between the outer baffle and the inner baffle, noise formed by an automobile and reverse airflow in the running process is weakened, and the driving comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, and more particularly to a sound-insulating side panel. Background Art

[0002] The side panel of a car is an important component in car design. It is located in the skirt area formed by the front and rear bumpers of the car. Its main function is to slow down the reverse airflow generated when the car is driving and ensure the stability of the vehicle when driving at high speed by increasing downforce.

[0003] However, when the car is driving, it will generate noise with the reverse airflow, and the noise will be transmitted into the car through the side panel, resulting in a loud noise inside the car, affecting the driver's driving experience and reducing comfort.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a sound insulation side panel.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions: a sound-insulating side panel, a sound-absorbing layer is provided between the outer panel and the inner panel, the sound-absorbing layer includes a damping sound insulation felt, a sound-absorbing panel 1, a sound-absorbing panel 2, a plurality of shock absorbers, a plurality of sound-absorbing blocks, a sound insulation panel and a thin-walled square box, an array of a plurality of the shock absorbers is arranged on the damping sound insulation felt, an array of a plurality of the sound-absorbing blocks is arranged on the sound-absorbing panel 1, a plurality of through grooves are arranged in an array on the sound insulation panel, a plurality of the shock absorbers are respectively located in the plurality of through grooves, the top end of the shock absorber is fixedly connected to one end of the sound insulation panel 1, and the bottom surface of the shock absorber is fixedly connected to the damping sound insulation felt.

[0007] The utility model is further configured as follows: the damping sound insulation felt is fixedly connected to a side of the outer baffle close to the inner baffle, the sound insulation board is fixedly connected to a side of the damping sound insulation felt away from the outer baffle, and the sound insulation board is made of glass fiber cotton.

[0008] The utility model is further configured as follows: the length and width of the through groove are respectively the same as the length and width of the shock absorber, and the depth of the through groove is the same as the height of the shock absorber.

[0009] The utility model is further configured as follows: the first sound absorbing panel and the second sound absorbing panel are arranged opposite to each other, one end of the first sound absorbing panel away from the second sound absorbing panel is fixedly connected to the sound insulation panel, and the first sound absorbing panel and the second sound absorbing panel are made of polyester fiber.

[0010] The utility model is further configured as follows: the thickness of the sound absorbing block is the same as the distance between the first sound absorbing board and the second sound absorbing board, and a plurality of the sound absorbing blocks are made of expanded perlite.

[0011] The utility model is further configured as follows: the thin-walled square box is fixedly connected to the end of the second sound absorbing board away from the first sound absorbing board, and the end of the inner baffle close to the outer baffle is fixedly connected to the end of the thin-walled square box away from the second sound absorbing board.

[0012] In summary, the utility model has the following beneficial effects: the noise generated by the reverse airflow during driving of the car is reduced by the damping sound insulation felt, sound absorbing panel 1, sound absorbing panel 2, shock absorber, sound absorbing block, sound insulation panel and thin-walled square box arranged between the outer baffle and the inner baffle, thereby improving driving comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 This is an exploded view of the present invention.

[0016] In the figure: 1. Outer baffle; 2. Inner baffle; 3. Sound-absorbing layer; 4. Damping sound insulation felt; 5. Sound-absorbing panel 1; 6. Sound-absorbing panel 2; 7. Shock absorber; 8. Sound-absorbing block; 9. Sound insulation board; 10. Thin-walled square box; 11. Through groove. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0018] Embodiment: A sound-insulating side panel, such as Figure 1-Figure 2As shown, it includes an outer baffle 1 and an inner baffle 2, a sound-absorbing layer 3 is provided between the outer baffle 1 and the inner baffle 2, the outer baffle 1 and the inner baffle 2 are arranged opposite to each other, and the sound-absorbing layer 3 includes a damping sound insulation felt 4, a sound-absorbing board 1 5, a sound-absorbing board 2 6, a plurality of shock absorbers 7, a plurality of sound-absorbing blocks 8, a sound insulation board 9 and a thin-walled square box 10, and the damping sound insulation felt 4 is fixedly connected to the side of the outer baffle 1 close to the inner baffle 2. The damping sound insulation felt 4 is usually refined from high-purity fine iron powder, EPDM (ethylene propylene diene monomer rubber), PVC (polyvinyl chloride), asphalt, polymer materials, organic minerals and other materials. These materials give the damping sound insulation felt 4 light weight, ultra-thinness, softness and high tensile strength. and other characteristics, and has good sound insulation effect, which improves the sound insulation performance of the sound insulation type side panel. A plurality of shock absorbers 7 are arranged in an array on the damping sound insulation felt 4. The bottom end of the metal frame of the shock absorber 7 is fixedly connected to the end of the damping sound insulation felt 4 away from the outer baffle 1. The sound insulation board 9 is fixedly connected to the side of the damping sound insulation felt 4 away from the outer baffle 1. The sound insulation board 9 is made of glass fiber cotton. Glass fiber cotton is a man-made inorganic fiber material with a porous structure. The fibers inside are fluffy and staggered to form a large number of tiny pores. When sound waves encounter these pores, they will be reflected and propagated many times. The energy of the sound waves decreases, thereby improving the sound insulation performance of the sound insulation type side panel.

[0019] like Figure 3 As shown, a plurality of through grooves 11 are arranged in an array on the sound insulation board 9, and the plurality of through grooves 11 correspond to the plurality of shock absorbers 7 one by one. The length and width of the through grooves 11 are respectively the same as the length and width of the shock absorber 7, and the depth of the through grooves 11 is the same as the height of the shock absorber 7, so that the shock absorber 7 can be placed in the through grooves 11 and the top surface of the shock absorber 7 is at the same horizontal plane as the end of the sound insulation board 9 away from the damping sound insulation felt 4, so that the sound absorbing board 1 5 can be fixedly connected to the top of the shock absorber 7. When the noise reaches the shock absorber 7, the shock absorber 7 vibrates to reduce the energy of the noise, thereby reducing the noise received by the sound absorbing board 1 5. The sound absorbing board 1 5 and the sound absorbing board 2 6 are arranged opposite to each other. The sound absorbing board 1 5 and the sound absorbing board 2 6 are made of polyester fiber. The polyester fiber material has a large number of small interconnected pores inside. When sound waves enter, they follow these pores to the inside, thereby generating friction, consuming the energy of the sound waves, and further improving the sound insulation effect of the sound insulation type side panel.

[0020] like Figure 1-Figure 2As shown, a plurality of sound-absorbing blocks 8 are arranged in an array on the sound-absorbing panel 1 5. The thickness of the sound-absorbing blocks 8 is the same as the distance between the sound-absorbing panel 1 5 and the sound-absorbing panel 2 6. The plurality of sound-absorbing blocks 8 are made of expanded perlite. The expanded perlite has a large number of internal cavities. These cavities constitute a porous structure, providing a path for sound to enter and reflect. Since these reflections are disordered, the energy of the sound waves is consumed in this process, thereby achieving the sound absorption effect. The thin-walled square box 10 is fixedly connected to the end of the sound-absorbing panel 2 6 away from the sound-absorbing panel 1 5. The thin-walled square box 10 has a hollow structure. Noise can be reduced by the cavity inside the thin-walled square box 10. The end of the inner baffle 2 close to the outer baffle 1 is fixedly connected to the end of the thin-walled square box 10 away from the sound-absorbing panel 2 6.

[0021] Working principle: When the noise propagates to the damping sound insulation felt 4, it will be weakened. When it propagates to the sound insulation board 9, because the fibers inside the sound insulation board 9 are fluffy and intertwined, a large number of tiny pores are formed. When the sound waves encounter these pores, they will be reflected and propagated many times. The shock absorber 7 in the sound insulation board 9 can also absorb the energy of the noise through vibration. When the noise reaches the sound-absorbing board 1 5 and the sound-absorbing board 2 6 made of polyester fiber material, there are a large number of tiny connected pores in the polyester fiber material. When the sound waves enter, they follow these pores to the inside, thereby generating friction and consuming the sound energy. The sound-absorbing block 8 made of expanded perlite provides a path for the noise to enter and reflect through the internal cavity. Since these reflections are chaotic, the energy of the sound waves is consumed in this process, and finally the noise is weakened through the cavity inside the thin-walled square box 10.

[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A sound-insulating side baffle, comprising an outer baffle (1) and an inner baffle (2), wherein the outer baffle (1) and the inner baffle (2) are arranged opposite to each other, and characterized in that: A sound-absorbing layer (3) is provided between the outer baffle (1) and the inner baffle (2), and the sound-absorbing layer (3) comprises a damping sound insulation felt (4), a sound absorbing board (5), a sound absorbing board (6), a plurality of shock absorbers (7), a plurality of sound absorbing blocks (8), a sound insulation board (9) and a thin-walled square box (10), wherein a plurality of the shock absorbers (7) are arranged in an array on the damping sound insulation felt (4), a plurality of the sound absorbing blocks (8) are arranged in an array on the sound absorbing board (5), a plurality of through grooves (11) are arranged in an array on the sound insulation board (9), and a plurality of the shock absorbers (7) are respectively located in the plurality of through grooves (11), a top end of the shock absorber (7) is fixedly connected to one end of the sound absorbing board (5), and a bottom surface of the shock absorber (7) is fixedly connected to the damping sound insulation felt (4).

2. The sound-insulating side panel according to claim 1, characterized in that: The damping sound insulation felt (4) is fixedly connected to a side of the outer baffle (1) close to the inner baffle (2), and the sound insulation board (9) is fixedly connected to a side of the damping sound insulation felt (4) away from the outer baffle (1), and the sound insulation board (9) is made of glass fiber cotton.

3. The sound-insulating side panel according to claim 2, characterized in that: The length and width of the through groove (11) are respectively the same as the length and width of the shock absorber (7), and the depth of the through groove (11) is the same as the height of the shock absorber (7).

4. The sound-insulating side panel according to claim 3, characterized in that: The sound absorbing board 1 (5) and the sound absorbing board 2 (6) are arranged opposite to each other, and one end of the sound absorbing board 1 (5) away from the sound absorbing board 2 (6) is fixedly connected to the sound insulation board (9), and the sound absorbing board 1 (5) and the sound absorbing board 2 (6) are made of polyester fiber.

5. The sound-insulating side panel according to claim 4, characterized in that: The sound absorbing blocks (8) are fixedly connected between the first sound absorbing board (5) and the second sound absorbing board (6), and a plurality of the sound absorbing blocks (8) are made of expanded perlite.

6. The sound-insulating side panel according to claim 5, characterized in that: The thin-walled square box (10) is fixedly connected to the end of the second sound absorbing board (6) away from the first sound absorbing board (5), and the end of the inner baffle (2) close to the outer baffle (1) is fixedly connected to the end of the thin-walled square box (10) away from the second sound absorbing board (6).

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