A loudspeaker and a vehicle chassis structure having the same, and an automobile.

Abstract

This utility model discloses a loudspeaker and a vehicle chassis structure and automobile having the same, relating to the field of loudspeaker technology. It includes a housing and a speaker assembly fixed within the housing. The housing comprises a first outer shell, a second outer shell, and a third outer shell. The second outer shell is detachably connected between the first and third outer shells, and the first, second, and third outer shells enclose a receiving space. A fixing part is provided on the inner wall of the second outer shell. When the first and second outer shells are connected, the fixing part can fix the speaker assembly between the first and second outer shells, with the diaphragm of the speaker assembly facing the first outer shell. The advantages of this utility model are: the loudspeaker is easy to disassemble and install, and it can meet the usage requirements of loudspeakers on a chassis.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a loudspeaker and a vehicle chassis structure and automobile having the same. Background Technology

[0002] Traditional gasoline-powered vehicles rely on the continuous noise generated by their engines to alert pedestrians to the approaching vehicle and help them avoid collisions. However, electric vehicle motors operate extremely quietly, making it difficult for pedestrians to detect vehicle movement nearby. Therefore, loudspeakers are now widely installed on electric vehicles to alert pedestrians. To ensure good sound diffusion, these loudspeakers are typically mounted on the vehicle's chassis. To further enhance sound propagation, the housing of the speaker assembly has openings corresponding to the diaphragm for effective sound transmission.

[0003] Compared to speakers installed inside the vehicle cabin, speakers mounted on the vehicle chassis are in direct contact with the outside, making them more susceptible to damage from road dust or water during vehicle operation. As a result, speakers located on the chassis are at a higher risk of damage and require more frequent maintenance. Therefore, there is a need to provide a speaker that is easy to maintain. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a loudspeaker and a vehicle chassis structure and automobile having the same, so as to solve the above problems.

[0005] This utility model provides a loudspeaker, including a housing and a sound-speaking assembly fixed within the housing. The housing includes a first outer shell, a second outer shell, and a third outer shell. The second outer shell is detachably connected between the first outer shell and the third outer shell. The first outer shell, the second outer shell, and the third outer shell enclose a receiving space. A fixing part is provided on the inner wall of the second outer shell. When the first outer shell and the second outer shell are connected, the fixing part can fix the sound-speaking assembly between the first outer shell and the second outer shell, and the diaphragm of the sound-speaking assembly faces the first outer shell.

[0006] Optionally, there are multiple fixing parts, which are distributed circumferentially on the inner wall of the second housing. The fixing parts extend on the inner wall of the second housing in a direction away from the inner wall, and each fixing part has an abutting block that matches the end shape of one end of the speaker assembly opposite to the diaphragm. The multiple fixing parts abut against the end of the speaker assembly through the abutting block.

[0007] Optionally, the end face of the first housing away from the second housing is flush with the diaphragm, and a plurality of sound outlets are provided on the end face.

[0008] Optionally, the middle part of the end face protrudes outward in a direction gradually away from the diaphragm to form an outward protrusion. The outward protrusion has a sound-speaking surface flush with the diaphragm. The area of ​​the sound-speaking surface is larger than the area of ​​the cross-section of the diaphragm, and a plurality of sound-speaking ports are opened on the sound-speaking surface.

[0009] Optionally, it also includes a sound-insulating pad, which is disposed on the end face of the first housing and surrounds the outward protrusion.

[0010] Optionally, the outer surface of the second housing is provided with a mounting portion for connection with a vehicle.

[0011] Optionally, a first snap-fit ​​block and a second snap-fit ​​block are provided on the outer surface of the second housing. A first snap-fit ​​plate and a second snap-fit ​​plate extend from the outer surfaces of the first housing and the third housing in a direction that gradually approaches the second housing. Both the first snap-fit ​​plate and the second snap-fit ​​plate are provided with snap-fit ​​grooves. The first snap-fit ​​block and the second snap-fit ​​block are respectively used to snap-fit ​​with the snap-fit ​​grooves of the first housing and the second housing.

[0012] This utility model also provides a vehicle chassis structure, including a chassis sheet metal and a speaker as described above. The speaker is mounted on the surface of the chassis sheet metal away from the ground and the diaphragm of the speaker faces the chassis sheet metal. A sound-emitting hole is provided on the chassis sheet metal corresponding to the portion of the diaphragm.

[0013] Optionally, a ring of abutting wall extends in the direction away from the ground on the surface of the chassis sheet metal, the abutting wall being used to abut against the sound insulation pad.

[0014] This utility model also provides an automobile, including the speaker as described above or the vehicle chassis structure as described above.

[0015] The advantages of this invention are as follows: By dividing the speaker housing into three detachably connectable parts, and fixing the speaker assembly between the first and second housings by the fixing part of the second housing, the speaker assembly is fixed between the first and second housings during speaker assembly. Since the third housing is not yet assembled at this time, it is possible to directly observe whether the speaker assembly is securely installed. The third housing is then assembled only after confirming that the speaker assembly is in place. This makes speaker installation and disassembly convenient, improving efficiency in situations with high disassembly frequency, and is suitable for speakers mounted on vehicle chassis. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a loudspeaker according to the present invention.

[0018] Figure 2 This is a schematic diagram of the exploded structure of a loudspeaker according to the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the first shell, the second shell, and the sound-emitting component in a loudspeaker according to the present invention.

[0020] Figure 4 This is a schematic diagram of a vehicle chassis structure according to the present invention.

[0021] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0022] Figure 6 This is a structural schematic diagram of a vehicle chassis structure according to the present invention from another perspective.

[0023] Figure 7 This is a schematic diagram of the chassis sheet metal structure in a vehicle chassis structure according to the present invention.

[0024] Figure 8 for Figure 7 A magnified view of a section at point B in the middle.

[0025] In the picture: Housing 10, first outer shell 11, end face 111, speaker 1111, protrusion 112, speaker plate 1121, connecting part 1122, first snap-fit ​​plate 113, snap-fit ​​groove 1131, second outer shell 12, fixing part 121, abutting block 1211, assembly part 122, assembly hole 1221, connecting hole 123, first snap-fit ​​block 124, inclined surface 1241, second snap-fit ​​block 125, third outer shell 13, second snap-fit ​​plate 131; Speaker assembly 20, magnet 21, frame 22, contact part 221, diaphragm 23; Sound insulation pad 30; Chassis sheet metal 40, speaker hole 41, abutment wall 42, mounting hole 43; Bolt 50. Detailed Implementation

[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0027] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0028] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar attributes, not to indicate or imply relative importance or a specific order.

[0030] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0031] like Figures 1 to 3As shown, this embodiment provides a loudspeaker, including a housing 10 and a sound-emitting assembly 20 fixed within the housing 10. The sound-emitting assembly 20 is a conventionally defined component for emitting sound, including a magnet 21, a frame 22, and a diaphragm 23. The sound-emitting assembly 20 is a mature and widely used component, and will not be described in detail here. The housing 10 includes a first outer shell 11, a second outer shell 12, and a third outer shell 13. The second outer shell 12 is detachably connected between the first outer shell 11 and the third outer shell 13. The first outer shell 11 is a cylindrical shape closed at one end, the second outer shell 12 is a cylindrical shape open at both ends, and the third outer shell 13 is a cylindrical shape closed at one end. The first outer shell 11, the second outer shell 12, and the third outer shell 13 together form a cylindrical shape closed at both ends, so that a receiving space is formed inside the housing 10 to accommodate the sound-emitting assembly 20. The inner wall of the second outer shell 12 is provided with a fixing part 121. When the first outer shell 11 and the second outer shell 12 are connected, the fixing part 121 can fix the speaker assembly 20 between the first outer shell 11 and the second outer shell 12. The diaphragm 23 of the speaker assembly 20 faces the first outer shell 11. The end face 111 of the first outer shell 11 away from the second outer shell 12 (i.e. the closed end of the first outer shell 11) is flush with the diaphragm 23 of the speaker assembly 20. Multiple strip-shaped speaker openings 1111 are provided on the end face 111.

[0032] The speaker provided in this embodiment configures the housing 10 as a detachably connected first housing 11, second housing 12, and third housing 13. The speaker assembly 20 is held between the first housing 11 and the second housing 12 by the fixing part 121 in the second housing 12. When the speaker is damaged or needs maintenance, the speaker can be easily disassembled into the first housing 11, second housing 12, third housing 13, and speaker assembly 20 by disassembling the first housing 11, second housing 12, and third housing 13. The damaged parts of the speaker can then be replaced. Furthermore, during the assembly of the speaker, the first housing 11 and the second housing 12 can be connected first. Since the speaker assembly 20 is fixed between the first housing 11 and the second housing 12 by the fixing part 121 of the second housing 12, the speaker assembly 20 can also be fixed between the first housing 11 and the second housing 12. In this case, the installation of the speaker assembly 20 can be directly observed. After confirming that the speaker assembly 20 is installed in place, the third housing 13 is connected to the second housing 12 to form a complete speaker. In cases where the disassembly and assembly frequency is high, the assembly efficiency can be improved. This avoids the problem that the installation of the speaker assembly 20 cannot be observed when only two housings are directly assembled to fix the speaker assembly 20, or the problem that the speaker assembly 20 is directly integrated with one of the housings and cannot be removed from the housing 10.

[0033] Specifically, there are multiple fixing parts 121, which are distributed circumferentially on the inner wall of the second outer shell 12. The fixing parts 121 extend on the inner wall of the second outer shell 12 in a direction away from the inner wall. The fixing parts 121 have abutting blocks 1211 that are adapted to the end shape of one end of the speaker assembly 20 opposite to the diaphragm 23. In this embodiment, the diaphragm 23 of the speaker assembly 20 is held in the frame 22. The frame 22 is generally a frustum shape with an internally hollow interior and an unclosed upper and lower bottom surface. The upper bottom surface refers to the bottom surface with a smaller area, and the lower bottom surface refers to the bottom surface with a larger area. The shape of the abutment block 1211 of the fixing part 121 is adapted to the outer surface of the upper bottom surface of the frame 22 of the speaker assembly 20. Multiple fixing parts 121 abut against the end of the frame 22 of the speaker assembly 20 through the abutment block 1211. The diaphragm 23 is located at the lower bottom surface of the frame 22. A ring of abutment parts 221 extends along the edge of the lower bottom surface of the frame 22 in a direction away from the diaphragm 23.

[0034] The middle portion of the end face 111 of the first outer shell 11 protrudes outward in a direction gradually moving away from the diaphragm 23 to form an outward protrusion 112. The outward protrusion 112 has a sound-emitting surface flush with the diaphragm 23. The sound-emitting surface is connected to the end face 111 by an extended connecting portion 1122. That is, the outward protrusion 112 includes the connecting portion 1122 and a sound-emitting plate 1121 with a sound-emitting surface. The outward protrusion 112 is generally a hollow cylinder. The area of ​​the sound-emitting surface is larger than the cross-sectional area of ​​the diaphragm 23. Multiple sound outlets 1111 are opened on the sound-emitting surface. When the first housing 11 and the second housing 12 are assembled and the speaker assembly 20 is fixedly held between the first housing 11 and the second housing 12, the speaker assembly 20 abuts against the outer surface of the upper bottom surface of the frame 22 through the fixing part 121 of the second housing 12, and the lower bottom surface of the speaker assembly 20 abuts against the end face 111 of the first housing 11 through the abutting part 221. The abutting point between the end face 111 of the first housing 11 and the abutting part 221 is the remaining part of the end face 111 excluding the protruding part 112. Since the area of ​​the sound-emitting surface of the protruding part 112 is larger than the cross-sectional area of ​​the diaphragm 23, the remaining part of the end face 111 of the first housing 11 will not contact the diaphragm 23, thus avoiding the problem of the diaphragm 23 contacting the first housing 11 and affecting the sound output.

[0035] Meanwhile, the speaker provided in this embodiment also includes a sound insulation pad 30. The sound insulation pad 30 is disposed on the end face 111 of the first housing 11 and surrounds the connecting portion 1122 of the outward protrusion 112. When the speaker housing 10 is assembled with the chassis sheet metal of the vehicle, the sound insulation pad 30 can abut against the chassis sheet metal to prevent the speaker housing 10 from bumping against the chassis sheet metal due to vehicle vibration. The material of the sound insulation pad 30 can be rubber.

[0036] When the speaker is installed on the chassis sheet metal of the vehicle, it needs to be fixed to the chassis sheet metal. For this purpose, the outer surface of the housing 10 has a plurality of mounting parts 122 for connecting with the chassis sheet metal of the vehicle. The mounting parts 122 are provided with mounting holes 1221, and the speaker can be fixed to the chassis sheet metal by passing a bolt through the hole on the mounting part 122 and then through the chassis sheet metal.

[0037] In this embodiment, multiple assembly parts 122 are disposed on the outer surface of the second housing 12. When mounting the speaker onto the vehicle's chassis sheet metal, the first housing 11, the speaker assembly 20, and the second housing 12 can be assembled first. Then, the first housing 11, the speaker assembly 20, and the second housing 12 are assembled onto the chassis sheet metal via the assembly parts 122. At this time, since the third housing 13 is not assembled, the condition of the speaker assembly 20 inside the second housing 12 can be directly observed. In this case, it can be roughly confirmed by observation whether the speaker assembly 20 is not properly installed due to collision, shaking, or squeezing during the installation process. The third housing 13 is then assembled after ensuring that the speaker assembly 20 is properly installed, ensuring accurate speaker installation. When the speaker is damaged or needs maintenance, the third housing 13 can also be disassembled first to observe the internal condition of the speaker and preliminarily determine which part of the speaker is damaged, thereby improving maintenance efficiency.

[0038] Meanwhile, a connection hole 123 is provided on the outer surface of the second housing 12 for the speaker assembly 20 to be electrically connected to the outside.

[0039] For the detachable connection of the first outer shell 11, the second outer shell 12, and the third outer shell 13, the outer surface of the second outer shell 12 is provided with a first latching block 124 and a second latching block 125. The first latching block 124 is closer to the first outer shell 11 than the second latching block 125. The first latching block 124 has two opposing surfaces, one of which is fitted and fixedly connected to the outer surface of the second outer shell 12, and the other surface of the first latching block 124 is a slope 1241. The slope 1241 gradually slopes towards the outer surface of the second outer shell 12 in the direction extending from the second outer shell 12 toward the first outer shell 11. The second latching block 125 also has two opposing surfaces. One surface of the second latching block 125 is fitted and fixedly connected to the outer surface of the second outer shell 12, and the other surface of the second latching block 125 is also a slope 1241. The slope direction of the slope 1241 of the second latching block 125 is opposite to the slope direction of the slope 1241 of the first latching block 124. Correspondingly, a first snap-fit ​​plate 113 and a second snap-fit ​​plate 131 extend from the outer surfaces of the first outer shell 11 and the third outer shell 13 toward the direction of gradually approaching the second outer shell 12, respectively. Both the first snap-fit ​​plate 113 and the second snap-fit ​​plate 131 are provided with snap-fit ​​grooves 1131. The first snap-fit ​​block 124 and the second snap-fit ​​block 125 are respectively used to snap-fit ​​with the snap-fit ​​grooves 1131 of the first outer shell 11 and the second outer shell 12.

[0040] When the first outer shell 11, the second outer shell 12, and the third outer shell 13 are assembled together, the first snap-fit ​​plate 113 of the first outer shell 11 abuts against the first snap-fit ​​block 124. As the second outer shell 12 approaches the first outer shell 11, the first snap-fit ​​plate 113 can adapt to the height change of the inclined surface 1241 of the first snap-fit ​​block 124 through appropriate deformation. After the first snap-fit ​​block 124 has completely passed through the snap-fit ​​groove 1131 of the first snap-fit ​​plate 113, the first snap-fit ​​block 124 is snapped into the snap-fit ​​groove 1131 of the first snap-fit ​​plate 113. The assembly method of the third outer shell 13 and the second outer shell 12 is the same as the assembly method of the second outer shell 12 and the first outer shell 11.

[0041] When it is necessary to disassemble the first outer shell 11, the second outer shell 12, and the third outer shell 13, the first snap-fit ​​plate 113 and the second snap-fit ​​plate 131 can be slightly deformed by bending them, and the first snap-fit ​​block 124 and the second snap-fit ​​block 125 can be disengaged from the snap-fit ​​groove 1131 of the first snap-fit ​​plate 113 and the second snap-fit ​​plate 131, so that the first outer shell 11, the second outer shell 12, and the third outer shell 13 can be separated. Since the speaker assembly 20 is abutted between the first outer shell 11 and the second outer shell 12 through the frame 22, the speaker assembly 20 is also separated when the first outer shell 11 and the second outer shell 12 are separated.

[0042] The first outer shell 11, the second outer shell 12, and the third outer shell 13 can be made of plastic. The plastic material can support the appropriate deformation of the first outer shell 11, the second outer shell 12, and the third outer shell 13, thus adapting to this assembly and disassembly method.

[0043] In summary, the speaker provided in this embodiment allows for convenient disassembly and assembly of the first housing 11, the second housing 12, and the third housing 13. During the disassembly and assembly process, the speaker assembly 20 is also disassembled and assembled. This convenient disassembly and assembly method is suitable for speakers mounted on vehicle chassis and meets high-frequency maintenance requirements. Furthermore, the assembly precision is high; the speaker assembly 20 can be fixed to the vehicle chassis first, and then its proper installation can be observed before the housing 10 is fully assembled.

[0044] like Figures 4 to 8As shown, this embodiment also provides a vehicle chassis structure, including a chassis sheet metal 40 and a speaker as described above. In this embodiment, the chassis sheet metal 40 is the bottom protective sheet metal below the front bumper. The speaker is mounted on the surface of the chassis sheet metal 40 facing away from the ground, with the speaker diaphragm 23 facing the chassis sheet metal 40. A sound-emitting hole 41 is provided on the chassis sheet metal 40 corresponding to the diaphragm 23. A mounting hole 43 is provided on the chassis sheet metal 40, coaxial with the mounting hole 1221 on the mounting part 122 of the second housing 12. The speaker is fixedly held on the chassis sheet metal 40 by bolts 50 passing through the mounting hole 1221 of the mounting part 122 of the second housing 12 and the mounting hole 43 on the chassis sheet metal 40.

[0045] Furthermore, a ring of abutment walls 42 extends upwards from the ground surface of the chassis sheet metal 40, and these abutment walls 42 abut against the sound insulation pad 30. Specifically, the area of ​​the shape formed by the abutment walls 42 is slightly larger than the area of ​​the sound-emitting surface of the first housing 11 and smaller than the area of ​​the end face 111 of the first housing 11. When the speaker is mounted on the chassis sheet metal 40, the protrusion 112 of the first housing 11 is located inside the abutment walls 42, while the portion of the end face 111 of the first housing 11, excluding the protrusion 112, abuts against the abutment walls 42. Since the sound insulation pad 30 is located on the end face 111 of the first housing 11, the abutment walls 42 abut against the sound insulation pad 30. By abutting against the sound insulation pad 30 with the abutment walls 42, it is ensured that the sound insulation pad 30 is firmly abutted against the chassis sheet metal 40 of the vehicle, preventing gaps that could lead to water leakage or direct contact between the speaker and the chassis sheet metal 40 that could cause abnormal noise.

[0046] In summary, the vehicle chassis structure provided in this embodiment can meet the requirement of the tram issuing warning sounds to alert pedestrians and reduce safety risks, and the speakers on the chassis sheet metal 40 are firmly installed and easy to maintain.

[0047] This embodiment also provides a car including the speaker described above.

[0048] This embodiment also provides an automobile, including the vehicle chassis structure described above.

[0049] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A loudspeaker, characterized in that: The device includes a housing (10) and a speaker assembly (20) fixed inside the housing (10). The housing (10) includes a first outer shell (11), a second outer shell (12), and a third outer shell (13). The second outer shell (12) is detachably connected between the first outer shell (11) and the third outer shell (13). The first outer shell (11), the second outer shell (12), and the third outer shell (13) enclose a receiving space. A fixing part (121) is provided on the inner wall of the second outer shell (12). When the first outer shell (11) and the second outer shell (12) are connected, the fixing part (121) can fix the speaker assembly (20) between the first outer shell (11) and the second outer shell (12), and the diaphragm (23) of the speaker assembly (20) faces the first outer shell (11).

2. The loudspeaker according to claim 1, characterized in that: The number of fixing parts (121) is multiple. The multiple fixing parts (121) are distributed circumferentially on the inner wall of the second housing (12). The fixing parts (121) extend on the inner wall of the second housing (12) in a direction away from the inner wall. The fixing parts (121) have abutting blocks that are adapted to the end shape of the speaker assembly (20) relative to the diaphragm (23). The multiple fixing parts (121) abut against the end of the speaker assembly (20) through the abutting blocks.

3. The loudspeaker according to claim 1, characterized in that: The end face (111) of the first housing (11) away from the second housing (12) is flush with the diaphragm (23), and a plurality of sound outlets (1111) are provided on the end face (111).

4. The loudspeaker according to claim 3, characterized in that: The middle part of the end face (111) protrudes outward in a direction gradually away from the diaphragm (23) to form an outward protrusion (112). The outward protrusion (112) has a sound-speaking surface that is flush with the diaphragm (23). The area of ​​the sound-speaking surface is larger than the area of ​​the cross-section of the diaphragm (23). A plurality of sound-speaking ports (1111) are opened on the sound-speaking surface.

5. The loudspeaker according to claim 4, characterized in that: It also includes a sound insulation pad (30), which is disposed on the end face (111) of the first housing (11) and surrounds the external protrusion (112).

6. The loudspeaker according to claim 1, characterized in that: The outer surface of the second housing (12) is provided with a mounting part (122) for connection with the vehicle.

7. The loudspeaker according to claim 1, characterized in that: The outer surface of the second housing (12) is provided with a first snap-fit ​​block (124) and a second snap-fit ​​block (125). The outer surfaces of the first housing (11) and the third housing (13) are respectively provided with a first snap-fit ​​plate (113) and a second snap-fit ​​plate (131) extending towards the second housing (12). The first snap-fit ​​plate (113) and the second snap-fit ​​plate (131) are both provided with snap-fit ​​grooves (1131). The first snap-fit ​​block (124) and the second snap-fit ​​block (125) are respectively used to snap-fit ​​with the snap-fit ​​grooves (1131) of the first housing (11) and the second housing (12).

8. A vehicle chassis structure, characterized in that: Includes a chassis sheet metal (40) and a loudspeaker as described in any one of claims 1-7, the loudspeaker being mounted on the surface of the chassis sheet metal (40) away from the ground and the diaphragm (23) of the loudspeaker facing the chassis sheet metal (40), and a sound-emitting hole (41) being provided on the chassis sheet metal (40) in a portion corresponding to the diaphragm (23).

9. The vehicle chassis structure according to claim 8, characterized in that: The chassis sheet metal (40) has a ring of abutting wall (42) extending in the direction away from the ground on the surface away from the ground, the abutting wall (42) being used to abut against the sound insulation pad (30).

10. A car, characterized in that: Includes the speaker as described in any one of claims 1-7 or the vehicle chassis structure as described in any one of claims 8-9.

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