Sound insulation pad structure of automobile inner wheel cover

Abstract

The utility model relates to the field of automobile accessories, and discloses an automobile inner wheel cover sound insulation pad structure which comprises a wheel cover, a sound insulation pad is arranged on the surface of the wheel cover, a damping fin is fixedly connected to one side of the sound insulation pad, a vibration stopping sheet is fixedly connected to the other side of the sound insulation pad, and a mounting groove is formed in the inner surface of the wheel cover. The inner wall of the mounting groove is fixedly connected with a hook-and-loop fastener male face, the outer wall of the sound insulation pad is fixedly connected with a rubber block, the side wall of the rubber block is fixedly connected with a hook-and-loop fastener female face, a compensation assembly is arranged in the wheel cover and comprises a groove, and the inner wall of the groove is fixedly connected with a spring. And a rubber bag is arranged on the outer wall of the spring. According to the utility model, by arranging the structures such as the damping sheet, the vibration stopping sheet and the cotton pad, compensation is provided for the sound insulation pad when the sound insulation pad expands with heat and contracts with cold in extremely cold and humid weather, and the risk that the sound insulation effect is reduced due to poor attachment between the sound insulation pad and the wheel cover is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a sound insulation pad structure for automotive inner wheel cover. Background Technology

[0002] The main functions of car inner wheel covers include rust prevention, waterproofing, corrosion prevention, protection against mud and dust, and protection of the vehicle's internal mechanical structure. Inner wheel covers are usually installed behind the outer frame of the wheel and are curved plastic plates, generally made of rubber or engineering plastics. The inner wheel cover protrudes about 5 centimeters from the car body, which can effectively prevent sand or particles splashed up during the car from damaging the car body paint. In order to effectively isolate the noise generated by the tires and reduce some noise interference, sound insulation pads need to be installed at the wheel arches of the car.

[0003] A search revealed a Chinese patent publication number: CN221067974U, which discloses a sound insulation pad structure for an automotive inner wheel cover. The sound insulation cotton has fixing strips on both sides, and a sound insulation pad is fitted to the bottom inner wall of the wheel cover. A shock-absorbing rubber sheet is located on the bottom of the sound insulation pad, away from the wheel cover. Multiple sound-absorbing tubes are fitted to the bottom of the shock-absorbing rubber sheet in an arc shape. This structure offers advantages such as improved sound insulation and ease of cutting, adjustment, and installation.

[0004] In the above technical solution, the sound insulation effect is ensured by the combination of the fixing strip of the sound insulation cotton and the shock-absorbing rubber sheet. However, in the winter in northern my country, there will be extreme cold weather. The sound insulation cotton will deform due to thermal expansion and contraction. The lack of compensation function for it under the phenomenon of cold contraction will lead to poor adhesion between the sound insulation cotton and the wheel cover, thereby reducing the sound insulation effect. Therefore, a sound insulation pad structure for the inner wheel cover of automobile is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sound insulation pad structure for automotive inner wheel cover, which aims to improve the problem that the existing automotive inner wheel cover sound insulation pad structure cannot compensate for the cold contraction of the sound insulation cotton in extreme cold weather, resulting in poor fit between the pad and the wheel cover and reduced sound insulation effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a car inner wheel cover sound insulation pad structure, including a wheel cover, a sound insulation pad provided on the surface of the wheel cover, a damping sheet fixedly connected to one side of the sound insulation pad, a vibration damping sheet fixedly connected to the other side of the sound insulation pad, an installation groove opened on the inner surface of the wheel cover, a Velcro male surface fixedly connected to the inner wall of the installation groove, a rubber block fixedly connected to the outer wall of the sound insulation pad, a Velcro female surface fixedly connected to the side wall of the rubber block, and a compensation component provided inside the wheel cover.

[0007] As a further description of the above technical solution:

[0008] The rubber block is placed on the outer wall of the sound insulation pad near the wheel cover, and the outer wall of the rubber block is adapted to the inner wall of the mounting groove.

[0009] As a further description of the above technical solution:

[0010] The compensation component includes a groove, a spring is fixedly connected to the inner wall of the groove, a rubber bladder is provided on the outer wall of the spring, a through hole is opened on the outer wall of the rubber bladder, and a moisture-absorbing bag is fixedly connected to the inner wall of the rubber bladder.

[0011] As a further description of the above technical solution:

[0012] The groove is formed on the outer wall of the wheel cover near the sound insulation pad, and the inner wall of the groove is adapted to the outer wall of the cotton pad.

[0013] As a further description of the above technical solution:

[0014] The interior of the rubber bladder is hollow.

[0015] As a further description of the above technical solution:

[0016] A first magnet piece is fixedly connected to the inner wall of the groove, and a second magnet piece is magnetically connected to the outer wall of the first magnet piece.

[0017] As a further description of the above technical solution:

[0018] The side of the second magnet away from the first magnet is fixedly connected to the outer wall of the rubber bladder away from the through hole.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the rubber bladder is adapted to the inner wall of the groove.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the sound insulation effect can be increased by setting damping plates, vibration damping plates, cotton pads and sound insulation pads. The male and female sides of the Velcro, the rubber block and the mounting groove can realize the quick installation and removal of the sound insulation pad. Finally, the compensation component is used to compensate for the thermal expansion and contraction of the sound insulation pad in extreme cold and humid weather, reducing the risk of poor adhesion between the sound insulation pad and the wheel cover leading to a decrease in the sound insulation effect.

[0023] 2. In this utility model, the combination of magnet piece one and magnet piece two facilitates the replacement of the expanded moisture-absorbing bag by removing the rubber bladder from the groove, thereby improving the convenience of replacement and ensuring the subsequent compensation effect. Attached Figure Description

[0024] Figure 1 This is a side view of the main structure of the automotive inner wheel cover sound insulation pad structure proposed in this utility model;

[0025] Figure 2 This is a cross-sectional view of the wheel cover and a left-side view showing the separation of the sound insulation pad from the inner wheel cover sound insulation pad structure of an automobile according to this utility model.

[0026] Figure 3 This utility model proposes a sound insulation pad structure for automotive inner wheel arches. Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 This is a cross-sectional view of the wheel cover and a bottom view showing the separation of the sound insulation pad from the inner wheel cover structure of an automobile, as proposed in this utility model.

[0028] Legend:

[0029] 1. Wheel cover; 2. Sound insulation pad; 3. Damping sheet; 4. Vibration damping sheet; 5. Cotton pad; 6. Mounting groove; 7. Male side of hook and loop fastener; 8. Female side of hook and loop fastener; 9. Rubber block; 10. Groove; 11. Rubber bladder; 12. Through hole; 13. Moisture-absorbing bag; 14. Spring; 15. Magnet piece one; 16. Magnet piece two. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-3 This utility model provides an embodiment of a car inner wheel cover sound insulation pad structure, including a wheel cover 1, with a sound insulation pad 2 disposed on the surface of the wheel cover 1. The sound insulation pad 2 can isolate the transmission of external noise and reduce the impact of tire noise on the driver and passengers. A damping sheet 3 is fixedly connected to one side of the sound insulation pad 2. The damping sheet 3 is an elastic material that is bonded to the inner surface of the sound insulation pad 2 by high temperature. The damping sheet 3 can reduce noise and vibration. When used in conjunction with the sound insulation pad 2, it can enhance the sound insulation effect. A vibration damping sheet 4 is fixedly connected to the other side of the sound insulation pad 2. The vibration damping sheet 4 can play a vibration damping role. When used in conjunction with the sound insulation pad 2, it can further improve the sound insulation effect. An installation groove 6 is opened on the inner surface of the wheel cover 1. A hook and loop fastener male face 7 is fixedly connected to the inner wall of the installation groove 6. A rubber block 9 is fixedly connected to the outer wall of the sound insulation pad 2. A hook and loop fastener female face 8 is fixedly connected to the side wall of the rubber block 9. The opposite sides of the hook and loop fastener male face 7 and the hook and loop fastener female face 8 can be glued to each other. A compensation component is disposed inside the wheel cover 1.

[0032] Reference Figures 2-4 A rubber block 9 is placed on the outer wall of the sound insulation pad 2 near the wheel cover 1. The outer wall of the rubber block 9 is adapted to the inner wall of the mounting groove 6. Due to the anti-slip properties of its material, the rubber block 9 can generate friction with the inner wall of the mounting groove 6, thereby allowing the male side 7 and the female side 8 of the Velcro to be stably bonded. The compensation component includes a groove 10, which is formed on the outer wall of the wheel cover 1 near the sound insulation pad 2. The inner wall of the groove 10 is adapted to the outer wall of the cotton pad 5. A spring 14 is fixedly connected to the inner wall of the groove 10. The outer wall of 4 is provided with a rubber bladder 11, the interior of which is hollow. The hollow rubber bladder 11 is used to place the moisture-absorbing bag 13. The rubber bladder 11 is similar to an air bladder and can be inflated. The outer wall of the rubber bladder 11 is adapted to the inner wall of the groove 10. The outer wall of the rubber bladder 11 has a through hole 12. The moisture-absorbing bag 13 is fixedly connected to the inner wall of the rubber bladder 11. The desiccant inside the moisture-absorbing bag 13, such as calcium chloride, will form a saturated solution after absorbing moisture, which may then form hydrates, causing the moisture-absorbing bag 13 to expand.

[0033] Reference Figures 3-4 A magnet 15 is fixedly connected to the inner wall of the groove 10, and a magnet 16 is magnetically connected to the outer wall of the magnet 15. The side of the magnet 16 away from the magnet 15 is fixedly connected to the outer wall of the rubber bladder 11 away from the through hole 12. The rubber bladder 11 is fixed inside the groove 10 by the magnetic attraction of the magnet 15 and the magnet 16. At the same time, the groove 10 and the cotton pad 5 cooperate to prevent the rubber bladder 11 from falling out of it.

[0034] Working principle: The sound insulation pad 2, together with the damping sheet 3 and the vibration damping sheet 4, can absorb noise and achieve a sound insulation effect. In the case of extreme cold weather in the north, the air humidity is generally high, and the sound insulation pad 2 may experience thermal expansion and contraction. At this time, the moisture-absorbing bag 13 will absorb moisture and gradually expand, causing the rubber bladder 11 to expand accordingly, squeezing the cotton pad 5 to compensate for the contraction of the sound insulation pad 2. At the same time, the elasticity of the spring 14 can provide a certain support force for the cotton pad 5, thereby preventing poor adhesion between the sound insulation pad 2 and the wheel cover 1 surface, which would affect the sound insulation effect. When the sound insulation pad 2 needs to be replaced, apply force to both ends of the sound insulation pad 2 outwards, causing the rubber block 9 to separate the Velcro female side 8 and the Velcro male side 7. Finally, the rubber block 9 will detach from the inside of the mounting groove 6. Reversing the above steps can quickly replace the sound insulation pad 2, thereby ensuring the sound insulation effect.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sound insulation pad structure for an automotive inner wheel arch, comprising a wheel arch (1), wherein a sound insulation pad (2) is disposed on the surface of the wheel arch (1), characterized in that: A damping sheet (3) is fixedly connected to one side of the sound insulation pad (2), and a vibration damping sheet (4) is fixedly connected to the other side of the sound insulation pad (2). An installation groove (6) is provided on the inner surface of the wheel cover (1). A Velcro male face (7) is fixedly connected to the inner wall of the installation groove (6). A rubber block (9) is fixedly connected to the outer wall of the sound insulation pad (2). A Velcro female face (8) is fixedly connected to the side wall of the rubber block (9). A compensation component is provided inside the wheel cover (1).

2. The automotive inner wheel arch sound insulation pad structure according to claim 1, characterized in that: The rubber block (9) is placed on the outer wall of the sound insulation pad (2) near the wheel cover (1), and the outer wall of the rubber block (9) is adapted to the inner wall of the mounting groove (6).

3. The automotive inner wheel arch sound insulation pad structure according to claim 1, characterized in that: The compensation component includes a groove (10), a spring (14) is fixedly connected to the inner wall of the groove (10), a rubber bladder (11) is provided on the outer wall of the spring (14), a through hole (12) is opened on the outer wall of the rubber bladder (11), and a moisture-absorbing bag (13) is fixedly connected to the inner wall of the rubber bladder (11).

4. The automotive inner wheel arch sound insulation pad structure according to claim 3, characterized in that: The groove (10) is formed on the outer wall of the wheel cover (1) near the sound insulation pad (2), and the inner wall of the groove (10) is adapted to the outer wall of the cotton pad (5).

5. The automotive inner wheel arch sound insulation pad structure according to claim 3, characterized in that: The interior of the rubber bladder (11) is hollow.

6. The automotive inner wheel arch sound insulation pad structure according to claim 3, characterized in that: A magnet piece 1 (15) is fixedly connected to the inner wall of the groove (10), and a magnet piece 2 (16) is magnetically connected to the outer wall of the magnet piece 1 (15).

7. The automotive inner wheel arch sound insulation pad structure according to claim 6, characterized in that: The side of the second magnet piece (16) away from the first magnet piece (15) is fixedly connected to the outer wall of the rubber bladder (11) away from the through hole (12).

8. The automotive inner wheel arch sound insulation pad structure according to claim 3, characterized in that: The outer wall of the rubber bladder (11) is adapted to the inner wall of the groove (10).

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