Automobile lining plate noise reduction device with sound absorption cavity

Abstract

The utility model provides an automobile lining plate noise reduction device with a sound absorption cavity, which comprises a lining plate body, a sound insulation rubber layer and a sound insulation cotton layer, the lining plate body is arc-shaped, and two ends of the lining plate body are respectively and fixedly provided with a first mounting plate and a second mounting plate. The sound absorption cavity is formed in the lining plate body, the porous rock wool material is installed in the lining plate body, meanwhile, the sound insulation rubber layer and the sound insulation cotton layer are matched, the sound insulation and noise reduction effects of the device can be improved, the arranged sound insulation rubber layer can buffer pebbles lifted by wheels, the pebbles are prevented from colliding with the lining plate body, and the service life of the lining plate is prolonged. Therefore, noise can be reduced, and the practicability of the device is conveniently improved; the upper end of the sound insulation rubber layer is conveniently fixed through the inserted connection cooperation of the inserted rods and the protrusions, the two ends of the sound insulation rubber layer are conveniently fixed through the inserting grooves, the stability of the sound insulation rubber layer can be improved, the sound insulation rubber layer can be conveniently detached and replaced, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of automotive liner technology, specifically to an automotive liner noise reduction device with a sound-absorbing cavity. Background Technology

[0002] The car wheel liner is a semi-circular plastic plate installed on the vehicle body above the tires. It mainly serves to isolate mud and sand, reduce wind resistance, and isolate chassis noise. The wheel liner can reduce road noise from the tires, protect the sheet metal parts from mud, water, stones and other debris thrown up during tire rolling, and reduce wind resistance during high-speed driving.

[0003] Existing automotive interior panels are typically made of thin plastic sheets with sound insulation cotton installed on top. However, their sound insulation effect is poor. During vehicle operation, stones kicked up by the tires can easily impact the interior panels, and the resulting noise is transmitted to the cabin, which can affect the driver, impair their concentration, and reduce the practicality of the interior panels.

[0004] Therefore, this utility model provides a noise reduction device for automotive lining panels with sound-absorbing cavity. Utility Model Content

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a noise reduction device for automotive lining panels with sound-absorbing cavities, thereby solving the problems mentioned in the background art. The present invention improves the sound insulation and noise reduction effect of the device by providing a sound-absorbing cavity inside the lining panel body and installing porous rock wool material, in conjunction with a sound-insulating rubber layer and a sound-insulating cotton layer. Furthermore, the sound-insulating rubber layer can buffer stones kicked up by wheels, preventing impact between the stones and the lining panel body, thus reducing noise and improving the practicality of the device.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a car liner noise reduction device with a sound-absorbing cavity, comprising a liner body, a sound-insulating rubber layer, and a sound-insulating cotton layer. The liner body is arc-shaped, and a first mounting plate and a second mounting plate are respectively fixedly disposed at both ends of the liner body. A sound-absorbing cavity is formed inside the liner body, and porous rock wool material is fixedly disposed inside the sound-absorbing cavity. The sound-insulating rubber layer is installed on the concave wall of the liner body by a fixing mechanism, and the sound-insulating cotton layer is fixed on the convex wall of the liner body by an adhesive layer.

[0007] Furthermore, the first mounting plate, the second mounting plate, and the liner body are integrally formed, and fixing holes are symmetrically opened inside one end of the first mounting plate and the second mounting plate.

[0008] Furthermore, slots are provided on the top of the other end of both the first and second mounting plates, and the two ends of the sound-insulating rubber layer are inserted into the slots.

[0009] Furthermore, the sound-insulating rubber layer is arc-shaped, and the fixing mechanism includes a plug and a protrusion.

[0010] Furthermore, one end of the insertion rod is spherical, and the insertion rod is symmetrically and fixedly installed on the concave wall of the liner body.

[0011] Furthermore, the protrusions are symmetrically fixed on the concave walls of the sound-insulating rubber layer, and the insertion rods are inserted into the protrusions and the sound-insulating rubber layer.

[0012] Furthermore, mounting holes are symmetrically provided at both ends of the inner side of the liner body, and mounting holes are provided inside the sound insulation cotton layer.

[0013] Furthermore, a rear baffle is fixedly provided on the concave wall at the rear end of the liner body, and a through hole is provided inside the lower end of the rear baffle.

[0014] The beneficial effects of this utility model are as follows: This utility model provides a car liner noise reduction device with a sound-absorbing cavity. By creating a sound-absorbing cavity inside the liner body and installing porous rock wool material, combined with a sound-insulating rubber layer and a sound-insulating cotton layer, the device can improve its sound insulation and noise reduction effect. Furthermore, the sound-insulating rubber layer can buffer stones kicked up by the wheels, preventing impact between the stones and the liner body, thereby reducing noise and improving the practicality of the device. The insertion rod and protruding insertion mechanism facilitate the fixing of the upper end of the sound-insulating rubber layer, while the slots facilitate the fixing of both ends of the sound-insulating rubber layer, improving its stability and making it easy to disassemble and replace. The operation is simple and convenient. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a car liner noise reduction device with a sound-absorbing cavity according to the present invention;

[0016] Figure 2 This is a front cross-sectional view of a car liner noise reduction device with a sound-absorbing cavity according to the present invention.

[0017] Figure 3 This utility model relates to a noise reduction device for automotive lining panels with a sound-absorbing cavity. Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a cross-sectional view of a car liner noise reduction device with a sound-absorbing cavity according to the present invention;

[0019] Figure 5This is a structural diagram of the liner body of a car liner noise reduction device with a sound-absorbing cavity according to the present invention;

[0020] Figure 6 This is a structural diagram of the sound insulation cotton layer of a car liner noise reduction device with a sound absorption cavity according to the present invention;

[0021] Figure 7 This is a structural diagram of the sound insulation rubber layer of a car liner noise reduction device with a sound absorption cavity according to the present invention;

[0022] In the diagram: 1. Liner body; 2. First mounting plate; 3. Second mounting plate; 4. Fixing hole; 5. Slot; 6. Sound insulation rubber layer; 7. Sound insulation cotton layer; 8. Rear baffle; 9. Mounting hole; 10. Sound absorption cavity; 11. Porous rock wool material; 12. Fixing mechanism; 13. Insert rod; 14. Protrusion. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1 to 7 This utility model provides a technical solution: a car liner noise reduction device with a sound-absorbing cavity, comprising a liner body 1, a sound-insulating rubber layer 6, and a sound-insulating cotton layer 7. The liner body 1 is arc-shaped, and a first mounting plate 2 and a second mounting plate 3 are fixedly installed at both ends of the liner body 1, respectively. A sound-absorbing cavity 10 is opened inside the liner body 10, and a porous rock wool material 11 is fixedly installed inside the sound-absorbing cavity 10. The sound-insulating rubber layer 6 is installed on the concave wall of the liner body 1 by a fixing mechanism 12, and the sound-insulating cotton layer 7 is fixed on the convex wall of the liner body 1 by an adhesive layer. The sound-absorbing cavity 10 and the porous rock wool material 11 can improve the sound insulation and noise reduction performance of the liner body 1. Through the cooperation of the liner body 1, the sound-insulating rubber layer 6, and the sound-insulating cotton layer 7, and the fact that the sound-insulating rubber layer 6 can buffer stones kicked up by the wheels and prevent stones from colliding with the liner body 1, the noise reduction capability of the device can be improved, thus enhancing the practicality of the device.

[0025] In this embodiment, the first mounting plate 2, the second mounting plate 3, and the liner body 1 are integrally formed. Fixing holes 4 are symmetrically opened inside one end of the first mounting plate 2 and the second mounting plate 3. Slots 5 are opened on the top of the other end of the first mounting plate 2 and the second mounting plate 3. The two ends of the sound insulation rubber layer 6 are inserted into the inside of the slots 5. The device can be easily fixed on the vehicle body above the wheel by the cooperation of the first mounting plate 2, the second mounting plate 3, and the fixing holes 4. This device can easily block mud and sand and reduce noise. The slots 5 facilitate the installation of the sound insulation rubber layer 6 and also facilitate the subsequent disassembly of the sound insulation rubber layer 6.

[0026] In this embodiment, the sound-insulating rubber layer 6 is arc-shaped. The fixing mechanism 12 includes a plug 13 and a protrusion 14. One end of the plug 13 is spherical. The plug 13 is symmetrically fixedly installed on the concave wall of the liner body 1. The protrusion 14 is symmetrically fixedly installed on the concave wall of the sound-insulating rubber layer 6. The plug 13 is inserted into the protrusion 14 and the interior of the sound-insulating rubber layer 6. Through the insertion of the plug 13 and the protrusion 14, it is convenient to fix and install the sound-insulating rubber layer 6, so that the sound-insulating rubber layer 6 can block the bottom of the liner body 1, which is convenient for blocking mud, sand, stones and other particles and for sound insulation and noise reduction. It is also convenient for the subsequent quick disassembly and replacement of the sound-insulating rubber layer 6.

[0027] In this embodiment, mounting holes 9 are symmetrically provided at both ends of the inner side of the liner body 1, and mounting holes 9 are provided inside the sound insulation cotton layer 7. A rear baffle 8 is fixedly provided on the concave wall at the rear end of the liner body 1. A through hole is provided inside the lower end of the rear baffle 8. The mounting holes 9 and the matching screws facilitate the fixing of the upper end of the liner body 1 and the sound insulation cotton layer 7, which can improve the stability of the sound insulation cotton layer 7 and the liner body 1. The rear baffle 8 can also block mud, sand, stones and other debris.

[0028] When using the automotive liner noise reduction device with sound-absorbing cavity, the first mounting plate 2 and the second mounting plate 3 cooperate with the vehicle body, and screws are screwed into the fixing holes 4 to facilitate the fixation between the first mounting plate 2, the second mounting plate 3 and the vehicle body. The liner body 1 and the sound insulation cotton layer 7 are in close contact with the upper part of the wheel, and screws are installed inside the mounting holes 9 to facilitate the fixation of the liner body 1 and the sound insulation cotton layer 7. The sound insulation rubber layer 6 is installed by inserting both ends of the sound insulation rubber layer 6 into the slots 5 on the first mounting plate 2 and the second mounting plate 3 respectively, and making the sound insulation rubber layer 6 in close contact with the concave wall of the liner body 1. At the same time, the insertion rod 13 is aligned with the protrusion 14, pressing the protrusion 14 and the sound insulation rubber layer 6. The insertion rod 13 is inserted into the snap-fit ​​hole inside the protrusion 14 and the sound insulation rubber layer 6 to facilitate the cooperation between the protrusion 14, the sound insulation rubber layer 6 and the insertion rod 13. The sound-insulating rubber layer 6 can be easily fixed and installed using the fixing mechanism 12. By providing a sound-absorbing cavity 10 inside the liner body 1 and installing porous rock wool material 11, which works in conjunction with the sound-insulating rubber layer 6 and the sound-insulating cotton layer 7, road noise from the tires can be easily isolated, improving the sound insulation and noise reduction effect of the device. Furthermore, the sound-insulating rubber layer 6 can buffer stones kicked up by the wheels, preventing impact between the stones and the liner body 1, thereby reducing noise and improving the practicality of the device. When the sound-insulating rubber layer 6 needs to be replaced, both ends of the sound-insulating rubber layer 6 are removed from the slot 5, and the sound-insulating rubber layer 6 is pulled downwards to separate the insert rod 13 from the sound-insulating rubber layer 6 and the protrusion 14, facilitating disassembly and replacement of the sound-insulating rubber layer 6. The operation is simple and convenient. The specifications of this device need to be adapted and processed according to different vehicles.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise reduction device for an automotive liner with a sound-absorbing cavity, comprising a liner body (1), a sound-insulating rubber layer (6), and a sound-insulating cotton layer (7), characterized in that, The liner body (1) is arc-shaped. A first mounting plate (2) and a second mounting plate (3) are fixedly installed at both ends of the liner body (1). A sound-absorbing cavity (10) is opened inside the liner body (1). A porous rock wool material (11) is fixedly installed inside the sound-absorbing cavity (10). The sound-insulating rubber layer (6) is installed on the concave wall of the liner body (1) through a fixing mechanism (12). The sound-insulating cotton layer (7) is fixed on the convex wall of the liner body (1) through an adhesive layer.

2. The noise reduction device for automotive lining panels with sound-absorbing cavity according to claim 1, characterized in that: The first mounting plate (2), the second mounting plate (3) and the liner body (1) are integrally formed, and the first mounting plate (2) and the second mounting plate (3) have symmetrically opened fixing holes (4) at one end.

3. The noise reduction device for automotive lining panels with sound-absorbing cavity according to claim 2, characterized in that: The top of the other end of the first mounting plate (2) and the second mounting plate (3) are both provided with slots (5), and the two ends of the sound insulation rubber layer (6) are inserted into the inside of the slots (5).

4. The noise reduction device for automotive lining panels with sound-absorbing cavity according to claim 1, characterized in that: The sound-insulating rubber layer (6) is arc-shaped, and the fixing mechanism (12) includes a plug (13) and a protrusion (14).

5. A noise reduction device for automotive lining panels with a sound-absorbing cavity according to claim 4, characterized in that: One end of the insert (13) is spherical, and the insert (13) is symmetrically fixed on the concave wall of the liner body (1).

6. The noise reduction device for automotive lining panels with sound-absorbing cavity according to claim 5, characterized in that: The protrusions (14) are symmetrically fixed on the concave wall of the sound insulation rubber layer (6), and the insertion rod (13) is inserted into the protrusions (14) and the sound insulation rubber layer (6).

7. The noise reduction device for automotive lining panels with sound-absorbing cavity according to claim 1, characterized in that: The inner ends of the liner body (1) are symmetrically provided with mounting holes (9), and the inner interior of the sound insulation cotton layer (7) is provided with mounting holes (9).

8. A noise reduction device for automotive lining panels with a sound-absorbing cavity according to claim 7, characterized in that: A rear baffle (8) is fixedly installed on the concave wall at the rear end of the liner body (1), and a through hole is provided inside the lower end of the rear baffle (8).

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