Fixing structure for sound-absorbing cotton of door protection plate and vehicle

Abstract

The utility model provides a fixing structure for sound-absorbing cotton of a door protection plate and a vehicle, and belongs to the technical field of vehicles, the fixing structure comprises a door protection plate body and the sound-absorbing cotton, and a plurality of hanging hooks are arranged on the door protection plate body in a scattered mode; the sound-absorbing cotton is provided with a hanging hole for the hanging hook to pass through; and the sound-absorbing cotton is hung on the door protection plate body through the hanging hooks. According to the fixing structure of the sound-absorbing cotton of the door protection plate, the hanging hook is arranged on the door protection plate body, the hanging hole is formed in the sound-absorbing cotton, and the hanging hook penetrates through the hanging hole in the sound-absorbing cotton to hang the sound-absorbing cotton on the door protection plate body. The sound-absorbing cotton is installed in the hanging mode, welding equipment is not needed, a large number of manpower and material resources do not need to be consumed, hanging and dismounting are convenient, time and labor are saved, only the sound-absorbing cotton needs to be hung on the door protection plate body, the risk of unsoldering of the sound-absorbing cotton does not need to be worried, and the fixing reliability of the sound-absorbing cotton is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and particularly relates to a fixing structure of a door trim sound-absorbing cotton and a vehicle provided with the fixing structure. Background Art

[0002] The main function of the door trim sound-absorbing cotton is to block the transmission of sound, reduce the interior noise of the vehicle, and improve the comfort of the vehicle occupants. Generally, the sound-absorbing cotton is thermally riveted or glued to the door trim. However, this welding fixing method has the following disadvantages:

[0003] (1) Welding requires equipment, which not only consumes a large amount of manpower and material resources, but also during the welding process, there may be problems such as the sound-absorbing cotton being scorched and burned through, or the sound-absorbing cotton becoming de-welded.

[0004] (2) After welding, it is not detachable. When other components on the door trim need to be disassembled, the sound-absorbing cotton needs to be removed first, and then the sound-absorbing cotton needs to be re-welded. Since there are many welding points on the sound-absorbing cotton, during the disassembly process, not only does it consume manpower and material resources, but also it takes a long working time; moreover, during the disassembly process, the sound-absorbing cotton is often damaged, resulting in an increase in maintenance costs.

[0005] The defect of the bonding fixing method is that at high temperatures, the glue volatilizes, the sound-absorbing cotton is likely to fall off, and it is not convenient to disassemble. Summary of the Utility Model

[0006] The embodiment of the utility model provides a fixing structure of a door trim sound-absorbing cotton and a vehicle, aiming to solve the problems of inconvenient disassembly, easy damage and de-welding of the sound-absorbing cotton during welding or bonding installation.

[0007] In a first aspect, to achieve the above object, the technical solution adopted by the utility model is: to provide a fixing structure of a door trim sound-absorbing cotton, including: a door trim body and a sound-absorbing cotton; a plurality of hanging hooks are dispersedly arranged on the door trim body; the sound-absorbing cotton is provided with hanging holes for the hanging hooks to pass through; the sound-absorbing cotton is hung on the door trim body through the hanging hooks.

[0008] In combination with the first aspect, in a feasible manner, the hanging hooks are integrally injection-molded on the door trim body; the hanging hooks have a first bending part and a second bending part, the first bending part penetrates into the hanging hole, and after the second bending part extends out through the hanging hole, it can abut against the sound-absorbing cotton, and the second bending part and the door trim body are respectively located on both sides of the sound-absorbing cotton.

[0009] In combination with the first aspect, in a feasible manner, the included angle a between the first bending part and the second bending part is an obtuse angle.

[0010] In combination with the first aspect, in an implementable manner, the included angle α between the first bent portion and the second bent portion satisfies α ≤ 120°.

[0011] In combination with the first aspect, in an implementable manner, a reinforcing rib is provided on the hanging hook; one end of the reinforcing rib is connected to the door trim body and extends from the first bent portion to the second bent portion by bending.

[0012] In combination with the first aspect, in an implementable manner, the height of the reinforcing rib protruding from the hanging hook gradually decreases from the door trim body to the free end of the hanging hook.

[0013] In combination with the first aspect, in an implementable manner, the hanging hooks are respectively provided at the four corners of the door trim body, and the second bent portions of the hanging hooks all extend towards the edge direction of the door trim body.

[0014] In combination with the first aspect, in an implementable manner, the width of the hanging hook gradually decreases from the door trim body to the free end of the hanging hook.

[0015] In combination with the first aspect, in an implementable manner, the hanging hole is a narrow slit formed in the sound-absorbing cotton.

[0016] Compared with the prior art, the beneficial effect of the fixing structure of the door trim sound-absorbing cotton provided by the present utility model lies in that: a hanging hook is provided on the door trim body, a hanging hole is provided on the sound-absorbing cotton, and the sound-absorbing cotton is hung on the door trim body by passing the hanging hook through the hanging hole on the sound-absorbing cotton. By adopting this hanging method to install the sound-absorbing cotton, no welding equipment is required, nor a large amount of manpower and material resources. Moreover, the hanging and disassembly are very convenient, saving time and effort. It only needs to hang the sound-absorbing cotton on the door trim body, and there is no need to worry about the risk of the sound-absorbing cotton being de-welded, ensuring the reliability of the fixing of the sound-absorbing cotton.

[0017] In the second aspect, an embodiment of the present utility model further provides a vehicle, including the fixing structure of the door trim sound-absorbing cotton.

[0018] For the vehicle provided by the present utility model, since the sound-absorbing cotton on the door trim body adopts a hanging installation method, the installation and disassembly are simple and convenient, which is beneficial to shortening the assembly time, avoiding damage during the disassembly process of the sound-absorbing cotton, and also beneficial to reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the fixing structure of the door trim sound-absorbing cotton provided by an embodiment of the present utility model;

[0020] Figure 2 is Figure 1Partial enlarged structural schematic diagram of the fixing structure of the door trim sound-absorbing cotton at M;

[0021] Figure 3 It is a sectional view along Figure 2 section line A-A in;

[0022] Figure 4 It is Figure 1 Partial enlarged structural schematic diagram of the fixing structure of the door trim sound-absorbing cotton at N;

[0023] Figure 5 It is a sectional view along Figure 4 section line B-B in;

[0024] Figure 6 It is Figure 1 Partial enlarged structural schematic diagram of the fixing structure of the door trim sound-absorbing cotton at F;

[0025] Figure 7 It is a sectional view along Figure 6 section line C-C in;

[0026] Figure 8 It is Figure 1 Partial enlarged structural schematic diagram of the fixing structure of the door trim sound-absorbing cotton at G;

[0027] Figure 9 It is a sectional view along Figure 8 section line D-D in;

[0028] Explanation of reference numerals:

[0029] 1. Door trim body; 11. Window; 2. Hanging hook; 21. First bending part; 22. Second bending part; 23. Reinforcing rib; 24. Guide slope; 3. Sound-absorbing cotton; 31. Hanging hole. Detailed implementation manners

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] In the claims, description and above-mentioned accompanying drawings of the present utility model, the terms "up and down" direction and "left and right" direction are Figure 1In the indicated direction, the "length" direction is the direction in which the hanging hook extends, the "width" is the direction parallel to the sound-absorbing cotton, and the height of the reinforcing rib is the height protruding from the surface of the hanging hook. These orientation terms are based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the specific protection scope of the present invention.

[0032] Please refer to Figures 1 to 9 As shown, the fixing structure of the door trim sound-absorbing cotton provided by the present utility model will now be described. The fixing structure of the door trim sound-absorbing cotton includes: a door trim body 1 and a sound-absorbing cotton 3. A plurality of hanging hooks 2 are dispersedly arranged on the door trim body 1; the sound-absorbing cotton 3 is provided with hanging holes 31 for the hanging hooks 2 to pass through; the sound-absorbing cotton 3 is hung on the door trim body 1 through the hanging hooks 2.

[0033] In the fixing structure of the door trim sound-absorbing cotton 3 provided by the present utility model, hanging hooks 2 are arranged on the door trim body 1, and hanging holes 31 are arranged on the sound-absorbing cotton 3. The hanging hooks 2 pass through the hanging holes 31 on the sound-absorbing cotton 3 to hang the sound-absorbing cotton 3 on the door trim body 1. By using this hanging method to install the sound-absorbing cotton 3, no welding equipment is required, nor a large amount of manpower and material resources. Moreover, the hanging and disassembly are very convenient, saving time and effort. It only needs to hang the sound-absorbing cotton 3 on the door trim body 1, and there is no need to worry about the risk of the sound-absorbing cotton 3 being welded off or falling off due to high temperature, ensuring the reliability of the fixation of the sound-absorbing cotton.

[0034] The fixing structure of the door trim sound-absorbing cotton 3 provided by the present utility model has the following beneficial effects by hanging the sound-absorbing cotton 3 on the door trim body 1:

[0035] (1) Ensure the durability and reliability of the sound absorption effect of the sound-absorbing cotton 3: Through the hanging and limiting of the sound-absorbing cotton 3 by the hanging hooks 2, on the basis of facilitating the disassembly and assembly of the sound-absorbing cotton 3, the stability and durability of the fixation of the sound-absorbing cotton 3 can be ensured, so that the sound-absorbing cotton 3 will not fall off under the mileage accumulated by the vehicle's driving bumps, ensuring that the sound-absorbing cotton 3 fully exerts its sound absorption performance, effectively reducing the interior noise of the vehicle, and providing a quieter and more comfortable environment for the driver and passengers.

[0036] (2) Ensure the stability of the fixation of the sound-absorbing cotton 3: Through the restriction of the sound-absorbing cotton 3 by the hanging hooks 2, the stability of the fixation of the sound-absorbing cotton 3 is enhanced, so that the sound-absorbing cotton 3 is not easily loosened, displaced or deformed during long-term use, maintaining a good fixed state, thereby ensuring the overall performance and reliability of the door trim.

[0037] (3) Optimization of space utilization: By means of the hanging hook 2, it is convenient to hang the sound-absorbing cotton 3 and also conducive to the removal of the sound-absorbing cotton 3. Moreover, no equipment or tools are required, and the sound-absorbing cotton 3 will not be damaged. Therefore, this fixed structure design can better adapt to the limited space inside the vehicle door, thus better optimizing space utilization and avoiding affecting the installation and normal operation of other components.

[0038] (4) Improvement of vehicle quality: A good fixed structure helps to improve the manufacturing process level and overall quality sense of the vehicle, and enhance the competitiveness of the vehicle in the market.

[0039] (5) Reduction of manufacturing costs: An efficient and reliable fixing method can reduce the assembly time and labor cost input during the production process, and at the same time reduce the later maintenance cost caused by poor fixing of the sound-absorbing cotton 3, thus being beneficial to reducing the manufacturing cost of the whole vehicle.

[0040] (6) Adaptation to harsh environments: Different from the sound-absorbing cotton 3 fixed by welding and bonding, the sound-absorbing cotton 3 of the present application is only hung on the door trim body 1. Therefore, it can maintain the fixing effect of the sound-absorbing cotton 3 under different temperature, humidity and vibration conditions, and enhance the applicability of the vehicle in various environments.

[0041] In some embodiments, as shown in Figures 2 to 9 , the hanging hook 2 is integrally injection-molded on the door trim body 1; the hanging hook 2 has a first bending part 21 and a second bending part 22. The first bending part 21 is inserted into the hanging hole 31, and after the second bending part 22 extends out through the hanging hole 31, it can abut against the sound-absorbing cotton 3. The second bending part 22 and the door trim body 1 are respectively located on both sides of the sound-absorbing cotton 3.

[0042] The structural design and layout position of the hanging hook 2 should consider the convenience and firmness of installation, and at the same time do not damage the sound-absorbing cotton 3 and the door trim body 1. Based on this design concept, the present application adopts the fixing method of setting the hanging hook 2 on the door trim body 1 to hang the sound-absorbing cotton 3. Compared with the fixing method using snap connection, since the hanging hook 2 is a bending structure and the second bending part 22 will be nearly parallel to the surface of the sound-absorbing cotton 3, the second bending part 22 can overlap with the sound-absorbing cotton 3, thus forming anti-disengagement limit for the sound-absorbing cotton 3 and ensuring the firmness of the sound-absorbing cotton 3 after installation; while for the snap connection method, the extending direction of the snap is perpendicular to the sound-absorbing cotton 3, and the snap only contacts the sound-absorbing cotton 3 through the small surface of the claw. Due to the certain flexibility of the sound-absorbing cotton 3, there may be a risk of the sound-absorbing cotton 3 falling off from the snap, and the fixing is not firm.

[0043] The hanging hook 2 of the present application is integrally molded with the door trim body 1, without the need for further installation or assembly, saving man-hours and manufacturing costs, and improving production efficiency and the stability and integrity of fixing.

[0044] In some embodiments, referring to Figure 3 , Figure 5 , Figure 7 and Figure 9 as shown, the included angle a between the first bending portion 21 and the second bending portion 22 is an obtuse angle. The second bending portion 22 not only needs to form a limit for the sound-absorbing cotton 3, but also cannot be inserted into the sound-absorbing cotton 3, otherwise it will cause damage to the sound-absorbing cotton 3 and affect the sound-absorbing and noise-reducing effect. Therefore, the second bending portion 22 forms an obtuse included angle with the first bending portion 21. When the second bending portion 22 extends out of the hanging hole 31, an acute included angle is formed between the second bending portion 22 and the sound-absorbing cotton 3. In this way, it can not only limit the separation of the sound-absorbing cotton 3 from the door trim body 1, but also avoid the risk of the second bending portion 22 being inserted into the sound-absorbing cotton 3 and causing damage to the sound-absorbing cotton 3; moreover, when the second bending portion 22 forms an obtuse included angle with the first bending portion 21, by opening a relatively small narrow slit in the sound-absorbing cotton 3, the sound-absorbing cotton 3 can be fixed on the door trim body 1, with better sound-absorbing effect while preventing slipping.

[0045] Optionally, the joint between the second bending portion 22 and the first bending portion 21 is in an arc transition connection, avoiding scratching and damage to the sound-absorbing cotton 3 and surrounding interfering components.

[0046] The first bending portion 21 is directly connected to the door trim body 1. The included angle between the first bending portion 21 and the door trim body 1 can be an acute angle or an obtuse angle. For example, Figure 1 as shown, the included angle b between the upper left first bending portion 21 and the door trim body 1 is an acute angle and ranges from 60° to 80°. The included angle b is preferably 70°. The included angle between the upper right first bending portion 21 and the door trim body 1 is an acute angle and ranges from 60° to 80°; the included angles between the lower left and lower right first bending portions 21 and the door trim body 1 are obtuse angles and range from 90° to 120°.

[0047] In some embodiments, referring to Figure 3 , Figure 5 , Figure 7 and Figure 9 as shown, the included angle a between the first bending portion 21 and the second bending portion 22 satisfies a ≤ 120°. The included angle a between the first bending portion 21 and the second bending portion 22 should not be too large. If it is too large, the sound-absorbing cotton 3 is likely to fall off from the hanging hook 2, resulting in insecure fixation of the sound-absorbing cotton 3; if the included angle a is too large, the hanging hole on the sound-absorbing cotton will be relatively large, and the sound-absorbing cotton cannot well wrap the hanging hook, leading to inaccurate positioning of the sound-absorbing cotton 3 and a decrease in the sound-absorbing effect of the sound-absorbing cotton 3. Therefore, when the included angle is relatively small, it can meet the requirement of fixing the sound-absorbing cotton on the door trim body, with better sound-absorbing effect while preventing slipping.

[0048] For example, the angle a of the included angle is 112°, and the overlapping length L between the second bending portion 22 and the sound-absorbing cotton 3 is 10 mm - 20 mm, so as to firmly install the sound-absorbing cotton 3 without falling off, and facilitate the installation and disassembly of the sound-absorbing cotton 3. Among them, the included angle a between the first bending portion 21 and the second bending portion 22 can also be 100°, 110°, 115°, 120°, etc. The overlapping length L between the second bending portion 22 and the sound-absorbing cotton 3 can be 10 mm, 12 mm, 15 mm, 18 mm, 20 mm, etc.

[0049] In some embodiments, referring to Figures 2 to 9 as shown, a reinforcing rib 23 is provided on the hanging hook 2; one end of the reinforcing rib 23 is connected to the door trim body 1 and extends from the first bending portion 21 to the second bending portion 22 by bending. The setting of the reinforcing rib 23 can improve the rigidity of the hanging hook 2, thereby enhancing its anti-deformation ability, and thus ensuring the firmness of the limit on the sound-absorbing cotton 3.

[0050] Optionally, referring to Figures 2 to 9 as shown, two parallel reinforcing ribs 23 are provided on the hanging hook 2 to improve the anti-deformation ability of the hanging hook 2. The sound-absorbing cotton 3 is limited between the hanging hook 2 and the door trim body 1. In order to avoid scratching the sound-absorbing cotton 3 by the reinforcing rib 23, the reinforcing rib 23 is provided on the side of the hanging hook 2 that does not contact the sound-absorbing cotton 3.

[0051] In some embodiments, referring to Figure 2 、 Figure 4 、 Figure 6 and Figure 8 as shown, the height of the reinforcing rib 23 protruding from the hanging hook 2 gradually decreases from the door trim body 1 to the free end of the hanging hook 2. Since the reinforcing rib 23 is attached to the hanging hook 2, the decreasing change in the height of the reinforcing rib 23 facilitates the hanging hook 2 to pass through the hanging hole 31, avoids the reinforcing rib 23 from blocking the hanging hook 2 from passing through the hanging hole 31, and improves the smoothness and convenience of the hanging of the hanging hook 2.

[0052] Referring to Figure 2 、 Figure 4 、 Figure 6 and Figure 8 as shown, further, a guiding inclined surface 24 is provided on the reinforcing rib 23 in the direction of the free end of the hanging hook 2 to improve the smoothness of the hanging hook 2 passing through the hanging hole 31. The reinforcing rib 23 and the hanging hook 2 are integrally injection-molded on the door trim body 1, reflecting the characteristic of high overall structural strength.

[0053] In some embodiments, referring to Figure 1As shown, hanging hooks 2 are respectively provided at the four corners of the door trim body 1, and the second bending parts 22 of the hanging hooks 2 all extend towards the edge direction of the door trim body 1. Through four-point positioning, the sound-absorbing cotton 3 can be firmly hung on the door trim body 1. For this kind of fixing structure, there is no need to set more hanging hooks 2. The hanging hooks 2 extending towards the edge of the door trim body 1 can facilitate the hanging of the sound-absorbing cotton 3 from the outside to the inside. When installing the sound-absorbing cotton 3, one hanging hook 2 can be first passed through the corresponding hanging hole 31 of the sound-absorbing cotton 3, then another hanging hook 2 on the same side with this hanging hook 2 as the reference can be installed, and then any one of the remaining hanging hooks 2 can be installed until the last one is installed, thus realizing the fixation of the four corners of the sound-absorbing cotton 3. When installing, it is also possible to first install the two hanging hooks 2 on one pair of diagonals and then install the other pair of hanging hooks 2.

[0054] Optionally, the extending directions of the hanging hooks 2 can also be in various directions: Example 1, the extending directions of the second bending parts 22 of the hanging hooks 2 at the four corners of the door trim body 1 also extend towards the corresponding corner parts of the door trim body 1. Taking the Figure 1 indicated direction as an example, the hanging hook 2 in the upper left corner extends towards the upper left corner of the door trim body 1, and the hanging hook 2 in the upper right corner extends towards the upper right corner of the door trim body 1; the hanging hooks 2 in the lower left corner and the lower right corner respectively extend towards their corresponding corner parts; Example 2, the hanging hook 2 in the upper left corner extends towards the left side of the door trim body 1, and the hanging hook 2 in the upper right corner extends towards the right side of the door trim body 1; the hanging hooks 2 in the lower left corner and the lower right corner respectively extend towards their corresponding left side and right side directions; Example 3, the hanging hooks 2 in the lower left corner and the lower right corner respectively extend towards the lower side direction of the door trim body 1, and the hanging hooks 2 in the upper left corner and the upper right corner respectively extend towards the upper side direction of the door trim body 1.

[0055] Optionally, hanging hooks 2 are respectively provided at the four edges of the door trim body 1 to improve the firmness of hanging and prevent the sound-absorbing cotton 3 from falling off.

[0056] In some embodiments, referring to Figure 2 、 Figure 4 、 Figure 6 and Figure 8 as shown, the width of the hanging hook 2 gradually decreases from the door trim body 1 towards its free end to facilitate the hanging hook 2 to pass through the hanging hole 31. Among them, the free end of the hanging hook 2 is in the shape of an isosceles trapezoid, which is convenient for passing through the hanging hole 31. Explanatorily, the free end of the hanging hook 2 is one end of the first bending part 21, and this free end first contacts and passes through the hanging hole 31.

[0057] Combined with Figure 1It is understood that windows 11 are provided at positions corresponding to the respective hanging hooks 2 on the door trim body 1. On the one hand, it facilitates the injection molding integrated design. On the other hand, it provides an avoidance for the installation of the sound-absorbing cotton 3. Thirdly, it can also reduce the weight of the door trim body 1, reflecting the lightweight of the whole vehicle. Among them, the window 11 is in a rectangular shape. The area of the window 11 is larger than the area of the projection of the hanging hook 2 onto the window.

[0058] In some embodiments, referring to Figure 3 , Figure 5 , Figure 7 and Figure 9 as shown, the hanging hole 31 is a narrow slit formed in the sound-absorbing cotton 3. For example, the hanging hole 31 can be a narrow slit directly separated on the sound-absorbing cotton 3. The hanging hook 2 is a sheet-like structure and can easily pass through the narrow slit. In this way, there is no need to set round holes on the sound-absorbing cotton 3. When the hanging hook 2 passes through the hanging hole 31, the sound-absorbing cotton 3 can fit well on the hanging hook 2 to form a seal, avoiding noise passing through the hanging hole 31, thereby improving the sound absorption and noise reduction effect of the sound-absorbing cotton 3.

[0059] Exemplarily, the narrow slits formed at the four corners of the sound-absorbing cotton 3 are cross-shaped knife edges of 10mm×10mm and are hung on the hanging hooks 2 at the four corners of the door trim body 1. Optionally, the narrow slit can also be a cross-shaped knife edge of 8mm×8mm, 12mm×12mm. Specifically, the size range of the narrow slit of b×b is (8 - 12)mm×(8 - 12)mm.

[0060] In the above embodiments, the descriptions of each embodiment have their own focuses. For parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] Based on the same inventive concept, the embodiments of the present application also provide a vehicle including the fixing structure of the door trim sound-absorbing cotton 3 described above.

[0062] For the vehicle provided by the present utility model, since the sound-absorbing cotton 3 on the door trim body 1 adopts a hanging installation method, it does not require the aid of installation equipment or tools, and the installation and disassembly are simple and convenient, which is beneficial to shortening the assembly time, and avoids damage to the sound-absorbing cotton 3, and is also beneficial to reducing the manufacturing cost.

[0063] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixing structure for door panel sound-absorbing cotton, characterized in that: include: A door guard plate body (1) on which a plurality of hanging hooks (2) are dispersedly arranged; as well as The sound-absorbing cotton (3) is provided with a hanging hole (31) for the hanging hook (2) to pass through; the sound-absorbing cotton (3) is hung on the door guard plate body (1) through the hanging hook (2).

2. The fixing structure of the door panel sound-absorbing cotton according to claim 1, characterized in that: The hanging hook (2) is integrally injection-molded on the door guard plate body (1); the hanging hook (2) has a first bent portion (21) and a second bent portion (22); the first bent portion (21) is inserted into the hanging hole (31); the second bent portion (22) can abut against the sound-absorbing cotton (3) after extending through the hanging hole (31); the second bent portion (22) and the door guard plate body (1) are respectively located on both sides of the sound-absorbing cotton (3).

3. The fixing structure of the door panel sound-absorbing cotton according to claim 2, characterized in that: The angle a between the first bending portion (21) and the second bending portion (22) is an obtuse angle.

4. The fixing structure of the door panel sound-absorbing cotton according to claim 3, characterized in that: The angle a between the first bending portion (21) and the second bending portion (22) is ≤120°.

5. The fixing structure of the door panel sound-absorbing cotton according to claim 2, characterized in that: The hook (2) is provided with a reinforcing rib (23); one end of the reinforcing rib (23) is connected to the door guard plate body (1) and is bent from the first bending portion (21) to extend to the second bending portion (22).

6. The fixing structure of the door panel sound-absorbing cotton according to claim 5, characterized in that: The height of the reinforcing rib (23) protruding from the hook (2) gradually decreases from the door guard plate body (1) to the free end of the hook (2).

7. The fixing structure of the door panel sound-absorbing cotton according to any one of claims 2 to 6, characterized in that: The four corners of the door guard plate body (1) are respectively provided with the hooking hooks (2), and the second bent portions (22) of the hooking hooks (2) extend towards the edge direction of the door guard plate body (1).

8. The fixing structure of the door panel sound-absorbing cotton according to claim 1, characterized in that: The width of the hook (2) gradually decreases from the door guard plate body (1) to the free end of the hook (2).

9. The fixing structure of the door panel sound-absorbing cotton according to claim 1, characterized in that: The hanging hole (31) is a narrow slit opened on the sound-absorbing cotton (3).

10. A vehicle, characterized in that: It comprises a fixing structure of the door panel sound-absorbing cotton as described in any one of claims 1-9.

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