Front floor sound cavity structure and vehicle having the same

Abstract

The present invention discloses a front floor acoustic cavity structure and a vehicle having the same, comprising a front floor, a longitudinal beam, a first cross beam, a second cross beam, a connecting beam, and a speaker. The longitudinal beam has a first cavity, the first cross beam has a second cavity connected to the first cavity, the second cross beam has a third cavity, and the connecting beam has a fourth cavity, with both ends of the fourth cavity connected to the second cavity and the third cavity, respectively. The speaker is mounted on the front floor between the first cross beam and the second cross beam, and the speaker has a sound outlet, which is suitable for connecting to at least one of the first cavity, the second cavity, the third cavity, and the fourth cavity. By using the first cavity, the second cavity, the third cavity, and the fourth cavity inside the longitudinal beam, the first cross beam, the second cross beam, and the connecting beam on the front floor as the acoustic cavity of the speaker, it can be ensured that the speaker has a sufficient acoustic cavity without the need for an additional acoustic cavity structure, and the impact of the additional acoustic cavity structure on the structural strength of the entire vehicle can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a front floor sound cavity structure and a vehicle having the same. Background Art

[0002] In the prior art, a car's subwoofer is generally arranged in a center channel, a shelf, or the outside of a front panel, which takes up the installation space of other components and has the problem of insufficient sound cavity. At the same time, the additional arrangement of a sound cavity in a center channel, a shelf, or the outside of a front panel will affect the strength of the vehicle body, thereby reducing the safety performance of the entire vehicle.

[0003] In addition, installing a subwoofer in a central channel, a shelf, or the outside of a front panel also causes the problem of the sound cavity being connected to the outside of the vehicle, which can cause a serious loss in the sound effects of the subwoofer and reduce the user experience. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a front floor acoustic cavity structure that can reduce the installation space occupied, reduce the impact of the acoustic cavity on the vehicle's structural strength, improve the sound quality and sound effects of the speakers, and enhance the user experience.

[0005] According to an embodiment of the present invention, the front floor sound cavity structure includes a front floor, a longitudinal beam, a first cross beam, a second cross beam, a connecting beam and a speaker. The longitudinal beam is installed on the front floor along the front-to-back direction of the front floor, and the longitudinal beam has a first cavity; the first cross beam is installed on the front floor along the left-right direction of the front floor, the end of the longitudinal beam abuts against the cross beam, and the first cross beam has a second cavity connected to the first cavity; the second cross beam is installed on the front floor along the left-right direction of the front floor and is located on the side of the first cross beam away from the longitudinal beam, and the second cross beam has a third cavity; the two ends of the connecting beam are respectively connected to the first cross beam and the second cross beam, and the connecting beam has a fourth cavity, and the two ends of the fourth cavity are respectively connected to the second cavity and the third cavity; the speaker is installed on the front floor between the first cross beam and the second cross beam, and the speaker has a sound outlet, which is suitable for connecting with at least one of the first cavity, the second cavity, the third cavity and the fourth cavity; the longitudinal beam, the first cross beam, the second cross beam and the connecting beam are all made of extruded aluminum profiles, and the first cavity, the second cavity, the third cavity and the fourth cavity are respectively integrally formed in the corresponding profile structure.

[0006] According to the front floor sound cavity structure of the embodiment of the present invention, by using the first cavity, second cavity, third cavity and fourth cavity inside the longitudinal beam, first cross beam, second cross beam and connecting beam on the front floor as the sound cavity of the speaker, not only it is ensured that the speaker has sufficient sound cavity to ensure the sound quality, but also there is no need to arrange the sound cavity structure additionally, which can avoid the additional sound cavity structure from affecting the structural strength of the whole vehicle. At the same time, it also makes full use of the space inside the vehicle and saves production costs.

[0007] In addition, the front floor acoustic cavity structure according to the present invention may also have the following additional technical features:

[0008] In some embodiments, the longitudinal beam includes a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are symmetrically arranged about the central axis of the front floor, and the first longitudinal beam and the second longitudinal beam each have the first cavity connected to the second cavity.

[0009] In some embodiments, the connecting beam includes a first connecting beam and a second connecting beam, the first connecting beam and the second connecting beam are spaced apart in the left and right directions, and both ends are fixedly connected to the first cross beam and the second cross beam, the first connecting beam and the second connecting beam each have a fourth cavity inside, the speaker includes a first speaker and a second speaker, the sound outlet of the first speaker is connected to the fourth cavity of the first connecting beam, and the sound outlet of the second speaker is connected to the fourth cavity of the second connecting beam.

[0010] In some embodiments, the first connecting beam and the second connecting beam are symmetrically arranged about a central axis of the front floor.

[0011] In some embodiments, the first connecting beam extends in the front-to-rear direction and is opposite to the first longitudinal beam in the front-to-rear direction, and the second connecting beam extends in the front-to-rear direction and is opposite to the second longitudinal beam in the front-to-rear direction.

[0012] In some embodiments, the front floor sound cavity structure also includes a first blocking block. In the left and right directions, the first blocking block is arranged in the middle of the first cross beam so that the second cavity is divided into a first left cavity and a first right cavity. The front and rear sides of the first left cavity are respectively connected to the first cavity of the first longitudinal beam and the fourth cavity of the first connecting beam, and the front and rear sides of the first right cavity are respectively connected to the first cavity of the second longitudinal beam and the fourth cavity of the second connecting beam.

[0013] In some embodiments, the front floor sound cavity structure also includes a second blocking block. In the left and right directions, the second blocking block is arranged in the middle of the second cross beam so that the third cavity is divided into a second left cavity and a second right cavity. The front end of the second left cavity is connected to the fourth cavity of the first connecting beam, and the front end of the second right cavity is connected to the fourth cavity of the second connecting beam.

[0014] In some embodiments, the first speaker is disposed on a side of the first connecting beam away from the second connecting beam, and the second speaker is disposed on a side of the second connecting beam away from the first connecting beam.

[0015] In some embodiments, cover plates are provided on the left and right end surfaces of the first beam and the second beam to close the second cavity and the third cavity.

[0016] The present invention also provides a vehicle having the above embodiment.

[0017] According to the vehicle of the embodiment of the present invention, by providing the above-mentioned front floor acoustic cavity structure, the sound quality effect inside the vehicle cabin can be effectively improved, and the passenger experience can be enhanced.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a top view of a front floor acoustic cavity structure according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a front floor acoustic cavity structure (excluding the front floor and the first speaker) according to an embodiment of the present invention;

[0021] Figure 3 2 is a schematic structural diagram of a front floor acoustic cavity structure (excluding the front floor) according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] 100. Front floor acoustic cavity structure;

[0024] 1. Front floor;

[0025] 2. Stringer; 21. First stringer; 22. Second stringer; 23. First cavity;

[0026] 3. First beam; 31. Second cavity;

[0027] 4. Second crossbeam; 41. Third cavity;

[0028] 5. Connecting beam; 51. First connecting beam; 52. Second connecting beam; 53. Fourth cavity;

[0029] 6. Speaker; 61. First speaker; 62. Second speaker. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0033] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] Reference below Figure 1-Figure 3 A front floor acoustic cavity structure 100 according to an embodiment of the present invention will be described.

[0035] like Figures 1 to 3As shown, a front floor acoustic cavity structure 100 according to an embodiment of the present invention includes: a front floor 1, a longitudinal beam 2, a first cross beam 3, a second cross beam 4, a connecting beam 5, and a speaker 6. The longitudinal beam 2 is installed on the front floor 1 along the front-to-back direction of the front floor 1, and has a first cavity 23 therein; the first cross beam 3 is installed on the front floor 1 along the left-right direction of the front floor 1, and the end of the longitudinal beam 2 abuts against the cross beam. The first cross beam 3 has a second cavity 31 therein that is connected to the first cavity 23; the second cross beam 4 is installed on the front floor 1 along the left-to-right direction of the front floor 1. And it is located on the side of the first crossbeam 3 away from the longitudinal beam 2, and the second crossbeam 4 has a third cavity 41; the two ends of the connecting beam 5 are respectively connected to the first crossbeam 3 and the second crossbeam 4, and the connecting beam 5 has a fourth cavity 53, and the two ends of the fourth cavity 53 are respectively connected to the second cavity 31 and the third cavity 41; the speaker 6 is installed on the front floor 1 between the first crossbeam 3 and the second crossbeam 4, and the speaker 6 has a sound hole, which is suitable for communicating with at least one of the first cavity 23, the second cavity 31, the third cavity 41 and the fourth cavity 53.

[0036] In this embodiment, the first cavity 23, the second cavity 31, the third cavity 41 and the fourth cavity 53 inside the longitudinal beam 2, the first cross beam 3, the second cross beam 4 and the connecting beam 5 are used as the sound cavity of the speaker 6, so that the speaker 6 can obtain sufficient sound cavity volume, thereby effectively improving the sound quality and sound effect of the speaker 6, so that passengers can have a better auditory experience.

[0037] Furthermore, the longitudinal beam 2, first crossbeam 3, second crossbeam 4, and connecting beam 5 are all made of extruded aluminum profiles, and the first cavity 23, second cavity 31, third cavity 41, and fourth cavity 53 are each integrally formed within the corresponding profile structure. The use of extruded aluminum profiles to manufacture the longitudinal beam 2, first crossbeam 3, second crossbeam 4, and connecting beam 5 effectively increases the overall collision strength of the front floor, thereby ensuring that the front floor acoustic cavity structure is less susceptible to deformation and damage. The use of an integrated molding process to create the first cavity 23, second cavity 31, third cavity 41, and fourth cavity 53 not only eliminates the need for an additional acoustic cavity structure, but also provides a more sealed acoustic cavity structure, effectively reducing sound loss and significantly lowering production costs.

[0038] For example Figures 1 to 3 As shown, the sound outlet of the speaker 6 is connected to the fourth cavity 53, and the first cavity 23, the second cavity 31, the third cavity 41 and the fourth cavity 53 are all connected. In this way, the sound emitted by the speaker 6 can be transmitted in the first cavity 23, the second cavity 31, the third cavity 41 and the fourth cavity 53, which can not only effectively improve the sound quality, but also create a surround sound experience. Passengers inside the cabin can feel the sound emitted from the bottom of the vehicle and fill the entire cabin, so that the passengers can get a good auditory experience.

[0039] In addition, the sound outlet of the speaker 6 can also be connected to the first cavity 23, the second cavity 31 and the third cavity 41, and the direction of the sound outlet can be adjusted according to actual needs.

[0040] In some embodiments, the speaker 6 is installed on the front floor 1 between the first crossbeam 3 and the second crossbeam 4 by bolt connection. In this way, the installation stability of the speaker 6 can be effectively guaranteed, so that the speaker 6 can always operate stably during the driving of the car without position deviation, which affects the passenger experience.

[0041] In some embodiments, a seal is provided between the sound outlet of the speaker 6 and the fourth cavity 53 to effectively prevent sound leakage.

[0042] According to the front floor sound cavity structure 100 of the embodiment of the present invention, by using the first cavity 23, the second cavity 31, the third cavity 41 and the fourth cavity 53 inside the longitudinal beam 2, the first cross beam 3, the second cross beam 4 and the connecting beam 5 on the front floor 1 as the sound cavity of the speaker 6, not only is it ensured that the speaker 6 has sufficient sound cavity to ensure the sound quality, but also there is no need to arrange an additional sound cavity structure, which can avoid the additional sound cavity structure from affecting the structural strength of the entire vehicle. At the same time, it also makes full use of the space inside the vehicle and saves production costs.

[0043] In one embodiment of the present invention, Figures 1 to 3 As shown, the longitudinal beam 2 includes a first longitudinal beam 21 and a second longitudinal beam 22, which are symmetrically arranged about the central axis of the front floor 1. The first longitudinal beam 21 and the second longitudinal beam 22 each have a first cavity 23 therein that communicates with the second cavity 31. In this embodiment, the first longitudinal beam 21 and the second longitudinal beam 22 each have a first cavity 23 therein, which effectively increases the acoustic volume of the speaker 6, thereby improving the sound quality of the speaker 6 and providing a better auditory experience for passengers in the vehicle. The symmetrical arrangement of the first longitudinal beam 21 and the second longitudinal beam 22 about the central axis of the front floor 1 ensures a more balanced sound when transmitted from the first longitudinal beam 21 and the second longitudinal beam 22 to the interior of the vehicle cabin. This allows passengers in the vehicle to hear the sound from both sides, rather than from one side, effectively improving the passenger experience.

[0044] In a specific embodiment of the present invention, Figures 1 to 3As shown, the connecting beam 5 includes a first connecting beam 51 and a second connecting beam 52, which are spaced apart in the left-right direction and fixedly connected to the first crossbeam 3 and the second crossbeam 4 at both ends. The first connecting beam 51 and the second connecting beam 52 each have a fourth cavity 53 therein. The speaker 6 includes a first speaker 61 and a second speaker 62. The sound outlet of the first speaker 61 communicates with the fourth cavity 53 of the first connecting beam 51, and the sound outlet of the second speaker 62 communicates with the fourth cavity 53 of the second connecting beam 52. In this specific embodiment, the first connecting beam 51 and the second connecting beam 52 both have the fourth cavity 53 therein, which effectively increases the sound cavity capacity of the speaker 6, thereby improving the sound quality of the speaker 6. At the same time, the first connecting beam 51 corresponds to the first speaker 61, and the second connecting beam 52 corresponds to the second speaker 62. This prevents the first speaker 61 and the second speaker 62 from interfering with each other during sound production, thereby affecting the sound quality.

[0045] Furthermore, the first connecting beam 51 and the second connecting beam 52 are symmetrically arranged about the central axis of the front floor 1. In this way, not only can the first connecting beam 51 and the second connecting beam 52 be arranged separately, but the sound output is also more balanced, thereby improving the experience of people in the car.

[0046] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the first connecting beam 51 extends in the front-to-back direction and is opposite to the first longitudinal beam 21 in the front-to-back direction. The second connecting beam 52 extends in the front-to-back direction and is opposite to the second longitudinal beam 22 in the front-to-back direction. In this specific embodiment, the first connecting beam 51 and the second connecting beam 52 are opposite to the first longitudinal beam 21 and the second longitudinal beam 22 in the front-to-back direction, respectively. As a result, when sound is transmitted from the fourth cavity 53 to the first cavity 23, it can propagate faster, thereby reducing sound loss, making the sound transmitted into the cabin fuller and more powerful, and effectively improving the auditory experience of the passengers in the vehicle.

[0047] In a specific embodiment of the present invention, Figures 1 to 3As shown, the front floor acoustic cavity structure 100 further includes a first baffle. In the left-right direction, the first baffle is disposed in the middle of the first crossbeam 3, thereby dividing the second cavity 31 into a first left cavity and a first right cavity. The front and rear sides of the first left cavity are respectively connected to the first cavity 23 of the first longitudinal beam 21 and the fourth cavity 53 of the first connecting beam 51. The front and rear sides of the first right cavity are respectively connected to the first cavity 23 of the second longitudinal beam 22 and the fourth cavity 53 of the second connecting beam 52. In some embodiments, the first baffle is disposed within the first crossbeam 3, in the middle of the first crossbeam 3. This prevents the sounds emitted by the first speaker 61 and the second speaker 62 from interfering with or canceling each other within the first crossbeam 3, thereby effectively improving the overall sound quality of the speakers 6 and enhancing the user experience.

[0048] Furthermore, the front floor sound cavity structure 100 also includes a second blocking block. In the left and right directions, the second blocking block is arranged in the middle of the second cross beam 4, so that the third cavity 41 is divided into a second left cavity and a second right cavity. The front end of the second left cavity is connected to the fourth cavity 53 of the first connecting beam 51, and the front end of the second right cavity is connected to the fourth cavity 53 of the second connecting beam 52. In this way, by arranging the first blocking block and the second blocking block, the first left cavity, the second left cavity, the fourth cavity 53 of the first connecting beam 51 and the first cavity 23 of the first longitudinal beam 21 are the sound cavities of the first speaker 61, and the first right cavity, the second right cavity, the fourth cavity 53 of the second connecting beam 52 and the first cavity 23 of the second longitudinal beam 22 are the sound cavities of the second speaker 62, so that the sound cavities of the first speaker 61 and the second speaker 62 are separated from each other, and the sounds emitted by the first speaker 61 and the second speaker 62 will not intersect or interfere with each other, thereby improving the overall sound quality of the speaker 6 and bringing a better experience to the people in the car.

[0049] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the first speaker 61 is arranged on the side of the first connecting beam 51 away from the second connecting beam 52, and the second speaker 62 is arranged on the side of the second connecting beam 52 away from the first connecting beam 51. In this way, the first speaker 61 and the second speaker 62 can be far enough apart to reduce interference between each other, thereby ensuring that the sound quality of the speaker 6 is effective.

[0050] In one embodiment of the present invention, Figures 1 to 3As shown, cover plates are provided on the left and right end surfaces of the first crossbeam 3 and the second crossbeam 4 to seal the second cavity 31 and the third cavity 41. In this way, the sealing of the second cavity 31 inside the first crossbeam 3 and the third cavity 41 inside the second crossbeam 4 can be ensured, thereby preventing the sound inside the second cavity 31 and the third cavity 41 from communicating with the outside of the vehicle, causing sound loss and affecting the experience of the passengers in the vehicle.

[0051] The present invention also provides a vehicle having the above embodiment.

[0052] According to the vehicle of the embodiment of the present invention, by providing the above-mentioned front floor acoustic cavity structure 100, the sound quality effect inside the vehicle cabin can be effectively improved, and the passenger experience can be enhanced.

[0053] The front floor sound cavity structure 100 and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0054] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0055] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A front floor acoustic cavity structure, characterized in that: include front floor (1); A longitudinal beam (2), the longitudinal beam (2) being installed on the front floor (1) along the front-to-rear direction of the front floor (1), and having a first cavity (23) therein; a first crossbeam (3), the first crossbeam (3) being installed on the front floor (1) along the left-right direction of the front floor (1), the end of the longitudinal beam (2) being in contact with the crossbeam, and the first crossbeam (3) having a second cavity (31) in communication with the first cavity (23); a second crossbeam (4), the second crossbeam (4) being installed on the front floor (1) along the left-right direction of the front floor (1) and being located on a side of the first crossbeam (3) away from the longitudinal beam (2), and having a third cavity (41) therein; a connecting beam (5), wherein two ends of the connecting beam (5) are respectively connected to the first crossbeam (3) and the second crossbeam (4); a fourth cavity (53) is provided in the connecting beam (5); and two ends of the fourth cavity (53) are respectively connected to the second cavity (31) and the third cavity (41); a loudspeaker (6), the loudspeaker (6) being mounted on the front floor (1) between the first crossbeam (3) and the second crossbeam (4), the loudspeaker (6) having a sound outlet hole, the sound outlet hole being adapted to communicate with at least one of the first cavity, the second cavity, the third cavity, and the fourth cavity (53); The longitudinal beam (2), the first cross beam (3), the second cross beam (4) and the connecting beam (5) are all made of extruded aluminum profiles, and the first cavity (23), the second cavity (31), the third cavity (41) and the fourth cavity (53) are respectively integrally formed in corresponding profile structures.

2. The front floor acoustic cavity structure according to claim 1, characterized in that: The longitudinal beam (2) comprises a first longitudinal beam (21) and a second longitudinal beam (22), wherein the first longitudinal beam (21) and the second longitudinal beam (22) are symmetrically arranged about the central axis of the front floor (1), and the first longitudinal beam (21) and the second longitudinal beam (22) both have the first cavity (23) in communication with the second cavity (31).

3. The front floor acoustic cavity structure according to claim 2, characterized in that: The connecting beam (5) comprises a first connecting beam (51) and a second connecting beam (52), the first connecting beam (51) and the second connecting beam (52) are spaced apart in the left-right direction, and both ends are fixedly connected to the first crossbeam (3) and the second crossbeam (4), the first connecting beam (51) and the second connecting beam (52) both have a fourth cavity (53) inside, and the speaker (6) comprises a first speaker (61) and a second speaker (62), the sound outlet of the first speaker (61) is connected to the fourth cavity (53) of the first connecting beam (51), and the sound outlet of the second speaker (62) is connected to the fourth cavity (53) of the second connecting beam (52).

4. The front floor acoustic cavity structure according to claim 3, characterized in that: The first connecting beam (51) and the second connecting beam (52) are symmetrically arranged about the central axis of the front floor (1).

5. The front floor acoustic cavity structure according to claim 3, characterized in that: The first connecting beam (51) extends in the front-rear direction and is opposite to the first longitudinal beam (21) in the front-rear direction. The second connecting beam (52) extends in the front-rear direction and is opposite to the second longitudinal beam (22) in the front-rear direction.

6. The front floor acoustic cavity structure according to claim 5, characterized in that: The invention also includes a first blocking block, which is arranged in the middle of the first cross beam (3) in the left-right direction, so that the second cavity (31) is divided into a first left cavity and a first right cavity, and the front and rear sides of the first left cavity are respectively connected to the first cavity (23) of the first longitudinal beam (21) and the fourth cavity (53) of the first connecting beam (51), and the front and rear sides of the first right cavity are respectively connected to the first cavity (23) of the second longitudinal beam (22) and the fourth cavity (53) of the second connecting beam (52).

7. The front floor acoustic cavity structure according to claim 6, characterized in that: The invention also includes a second blocking block, which is arranged in the middle of the second cross beam (4) in the left-right direction, so that the third cavity (41) is divided into a second left cavity and a second right cavity, the front end of the second left cavity is connected to the fourth cavity (53) of the first connecting beam (51), and the front end of the second right cavity is connected to the fourth cavity (53) of the second connecting beam (52).

8. The front floor acoustic cavity structure according to claim 3, characterized in that: The first speaker (61) is arranged on a side of the first connecting beam (51) away from the second connecting beam (52), and the second speaker (62) is arranged on a side of the second connecting beam (52) away from the first connecting beam (51).

9. The front floor acoustic cavity structure according to claim 1, characterized in that: Cover plates are provided on the left and right end surfaces of the first crossbeam (3) and the second crossbeam (4) to close the second cavity (31) and the third cavity (41).

10. A vehicle, characterized in that: The front floor sound cavity structure comprises the front floor sound cavity structure according to any one of claims 1-9.

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