Vehicle and cockpit floor structure thereof

Abstract

The utility model provides a vehicle and a cabin floor structure thereof, the cabin floor structure of the vehicle comprises a floor body and a seat cross beam which is arranged on the floor body and extends along the left-right direction of the whole vehicle; the seat cross beam comprises a cross beam outer frame made of a carbon fiber composite material and first structural foam arranged in the cross beam outer frame, a mounting insert is embedded in the first structural foam, and a seat mounting point is arranged on the mounting insert. According to the vehicle cabin floor structure, the strength of the seat cross beam can be guaranteed, the effect of transversely supporting the floor is achieved, meanwhile, weight reduction of the seat cross beam is facilitated, the lightweight design of a whole vehicle can be facilitated, and therefore the quality and market competitiveness of the whole vehicle can be improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a vehicle cabin floor structure. It also relates to a vehicle equipped with the vehicle cabin floor structure. Background Technology

[0002] Currently, seat crossbeams in vehicle floor structures are generally made of stamped sheet metal or extruded profiles. Their primary function is to provide mounting points for vehicle seats, and they also contribute to improving the structural strength of the vehicle floor to some extent. While these existing seat crossbeam structures meet the structural strength requirements for vehicle seat installation, they are relatively heavy, which is detrimental to vehicle weight reduction and makes them unsuitable for use in high-performance vehicles with low-slung, streamlined bodies. Utility Model Content

[0003] In view of this, the present invention aims to propose a vehicle cabin floor structure that is beneficial to the overall vehicle weight reduction.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A vehicle cabin floor structure includes a floor body and a seat crossbeam extending along the left-right direction of the vehicle and disposed on the floor body.

[0006] The seat crossbeam includes a crossbeam frame made of carbon fiber composite material, and a first structural foam disposed in the crossbeam frame, wherein a mounting insert is embedded in the first structural foam and a seat mounting point is provided on the mounting insert.

[0007] Furthermore, one end of the mounting insert that connects to the vehicle seat protrudes outside the outer frame of the crossbeam; and / or, the seat mounting point includes a seat mounting hole provided on the mounting insert.

[0008] Furthermore, the seat crossbeam includes a front seat crossbeam and a rear seat crossbeam arranged at intervals along the front-rear direction of the vehicle.

[0009] Furthermore, a reinforcing beam extending along the left-right direction of the vehicle is provided between the front seat crossbeam and the rear seat crossbeam; the reinforcing beam includes a reinforcing beam outer frame made of carbon fiber composite material, and a second structural foam disposed in the reinforcing beam outer frame.

[0010] Furthermore, the floor body is made of carbon fiber composite material and includes an upper floor panel and a lower floor panel connected together; the seat crossbeam and the reinforcing beam are disposed between the upper floor panel and the lower floor panel, and the upper floor panel is provided with perforated holes corresponding to the arrangement of the mounting inserts.

[0011] Furthermore, a third structural foam is provided between the upper floor and the lower floor.

[0012] Furthermore, the floor body has an upwardly bulging central channel in the middle of its left and right directions, and the seat crossbeam and the reinforcing beam are provided on both the left and right sides of the central channel.

[0013] Furthermore, the top of the central channel is provided with a reinforcing structure, which extends from the front end of the central channel to the rear end of the central channel, and the top of the rear end of the central channel is a slope that gradually rises in the direction pointing towards the rear of the vehicle.

[0014] Furthermore, a cavity is formed at the top of the central channel between the upper floor plate and the lower floor plate, and the reinforcing structure is formed by a fourth structural foam filling the cavity.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The vehicle cabin floor structure described in this utility model consists of a seat crossbeam made of a carbon fiber composite material frame and structural foam located within the frame, with inserts placed in the structural foam for seat installation. Utilizing the low weight, high structural strength, and high rigidity of carbon fiber composite materials and structural foam, this structure not only ensures the strength of the seat crossbeam and provides lateral support for the floor, but also helps reduce its weight, thus facilitating the lightweight design of the entire vehicle.

[0017] Furthermore, the exposed mounting inserts prevent damage to the crossbeam frame during vehicle seat installation. Seat mounting points utilize seat mounting holes on the mounting inserts, a simple structure that facilitates seat installation. The seat crossbeams are arranged in two spaced-ahead configurations, ensuring reliable seat installation and providing better lateral support, thus improving floor rigidity. Reinforcing beams further enhance the floor's lateral support capacity and overall rigidity. The floor itself is made of carbon fiber composite material, leveraging its high rigidity and light weight to ensure floor rigidity while also contributing to weight reduction.

[0018] Furthermore, the overall rigidity of the floor is ensured by incorporating a third structural foam between the upper and lower panels. Seat beams and reinforcing beams are installed on both sides of the central tunnel, guaranteeing the overall structural strength of the floor. This reinforcing structure increases the overall rigidity of the central tunnel and enhances its ability to transmit impact forces. Additionally, the sloping top of the rear end of the central tunnel, gradually increasing from front to rear, helps prevent the rear bumper from breaking off and intruding into the passenger compartment in the event of a rear-end collision, thus improving overall vehicle collision safety. The reinforcing structure is molded from structural foam, ensuring its rigidity and reinforcement effect while also contributing to weight reduction.

[0019] Another objective of this invention is to provide a vehicle in which the vehicle cabin has the vehicle cabin floor structure described above.

[0020] The vehicle described in this utility model has the aforementioned vehicle cabin floor structure, which not only enhances the structural strength of the seat beams and improves the stability of seat installation, but also facilitates the lightweight design of the entire vehicle, thereby improving the overall vehicle quality. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the vehicle cabin floor structure described in this embodiment of the utility model;

[0023] Figure 2 and Figure 3 for Figure 1 The structural diagrams shown are presented from different perspectives.

[0024] Figure 4 This is a schematic diagram of the assembly of the floor body and the threshold beam according to an embodiment of the present utility model;

[0025] Figure 5 for Figure 4 Top view of the structure shown;

[0026] Figure 6 for Figure 5 Sectional view along the middle AA direction;

[0027] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 for Figure 5 Sectional view along the BB direction;

[0029] Figure 9 for Figure 8 Enlarged view of point D in the middle;

[0030] Figure 10 This is a schematic diagram of the vehicle cabin floor structure described in this embodiment of the present invention when the floor plate is removed;

[0031] Figure 11 This is a schematic diagram of the structure of the crossbeam frame and the mounting insert during assembly according to an embodiment of the present utility model;

[0032] Figure 12 This is a schematic diagram of one structure of the mounting insert described in an embodiment of the present utility model;

[0033] Figure 13 This is another structural schematic diagram of the mounting insert described in an embodiment of the present utility model;

[0034] Figure 14 This is a schematic diagram of the structure of the reinforcing beam outer frame described in an embodiment of the present utility model;

[0035] Figure 15 This is a schematic diagram of the structure of the floor panel of the present invention.

[0036] Figure 16 This is a schematic diagram of the structure of the floor underboard according to an embodiment of the present utility model;

[0037] Figure 17 This is a schematic diagram of the structure of each foam structure described in the embodiments of this utility model;

[0038] Figure 18 This is a schematic diagram of the reinforcing structure described in an embodiment of the present utility model;

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Floor body; 10. Central channel; 11. Floor upper plate; 111. Central channel upper plate; 112. Recessed part; 113. Hollow hole; 114. First bulge part; 115. Second bulge part; 12. Floor lower plate; 121. Central channel lower plate; 13. Third structural foam; 14. First protrusion; 141. Sloping surface; 15. Reinforcing structure; 151. Reinforcing block; 152. Reinforcing arm; 1521. Extension part;

[0041] 2. Seat crossbeam; 21a. Front seat crossbeam; 21b. Rear seat crossbeam; 211. Crossbeam outer frame; 212. First structural foam; 213. Mounting insert; 2131. Seat mounting hole; 22. Reinforcing beam; 221. Reinforcing beam outer frame; 222. Second structural foam;

[0042] 3. Front panel; 4. Rear panel; 5. Door sill beam. Detailed Implementation

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Taking the vehicle in which the vehicle cabin floor structure described in this utility model is located as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vehicle's vertical direction (also known as the height direction, or the Z-direction of the whole vehicle), horizontal direction (also known as the width direction, or the Y-direction of the whole vehicle), and front-back direction (also known as the length direction, or the X-direction of the whole vehicle). "Inner" and "outer" are defined based on the outline of the corresponding components. For example, "inner" and "outer" are defined based on the vehicle outline, with the side of the vehicle outline closer to the middle of the vehicle being "inner," and the opposite being "outer."

[0046] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0047] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] Example 1

[0049] This embodiment relates to a vehicle cabin floor structure that provides stable installation for vehicle seats and helps improve the overall vehicle weight reduction, making it suitable for use in high-performance vehicles with low-profile, streamlined bodies.

[0050] In terms of overall structure, such as Figures 1 to 18As shown, the vehicle cabin floor structure of this embodiment includes a floor body 1 and a seat crossbeam 2 extending along the left-right direction of the vehicle, which is disposed on the floor body 1. The seat crossbeam 2 includes a crossbeam frame 211 made of carbon fiber composite material and a first structural foam 212 disposed in the crossbeam frame 211, and a mounting insert 213 is embedded in the first structural foam 212, and a seat mounting point is provided on the mounting insert 213.

[0051] At this point, the above configuration can utilize the characteristics of carbon fiber composite materials and structural foam, which are lightweight, structurally strong and rigid, to ensure the strength of the seat beam 2 and to provide lateral support for the floor. It also helps to reduce the weight of the seat beam 2, which in turn facilitates the lightweight design of the entire vehicle.

[0052] Based on the above overview, in detail, in this embodiment, the vehicle cabin floor structure also includes sill beams 5 located on the left and right sides of the floor body 1, and front bulkhead 3 and rear bulkhead 4 located at the front and rear ends of the floor body 1, respectively. Meanwhile, any structural parts not mentioned in this embodiment's vehicle cabin floor structure can be referred to from the various structures in the front body structure well-known to those skilled in the art, and will not be elaborated upon here.

[0053] In this embodiment, as a preferred implementation, such as Figures 1 to 3 As shown, the end of the mounting insert 213 that connects to the vehicle seat protrudes outside the crossbeam frame 211. This exposed mounting insert 213 prevents damage to the crossbeam frame 211 during vehicle seat installation and improves the ease of use of the vehicle seat.

[0054] At the same time, as a preferred embodiment, in this example, such as Figure 12 and Figure 13 As shown, the seat mounting point includes a seat mounting hole 2131 provided on the mounting insert 213. This simplifies the structure and facilitates the installation of the vehicle seat.

[0055] In specific implementation, the mounting insert 213 of this embodiment can be made of aluminum alloy, for example, and the seat mounting hole 2131 can be a threaded hole to facilitate the installation and removal of the vehicle seat. At the same time, the number and arrangement of the mounting inserts 213 can be set and adjusted according to the actual installation requirements of the vehicle seat. For example, they can be two such inserts arranged at intervals along the left and right direction of the vehicle on the seat crossbeam 2.

[0056] Furthermore, the number of seat mounting holes 2131 on the mounting insert 213 in this embodiment can also be set and adjusted according to the actual installation requirements of the vehicle seat. For example, it can be set to... Figure 12 One of the ones shown can also be set to Figure 13The two numbers shown only need to match the number of mounting holes on the vehicle seat.

[0057] Furthermore, in this embodiment, as a preferred implementation, it is still as follows: Figure 2 and Figure 3 As shown, the seat crossbeam 2 includes a front seat crossbeam 21a and a rear seat crossbeam 21b arranged at intervals along the front-rear direction of the vehicle. This arrangement of two seat crossbeams at intervals ensures the reliability of the vehicle seat installation and provides better lateral support, thus improving the rigidity of the floor area.

[0058] It is worth mentioning that the structures of the aforementioned front seat crossbeam 21a and rear seat crossbeam 21b are basically the same, both including the following: Figure 11 The crossbeam frame 211 shown, and the first structural foam 212 disposed within the crossbeam frame 211 (as shown in the figure) Figure 17 As shown in the figure, the outer frame of the crossbeam 211 and the first structural foam 212 are both rectangular in shape in overall visual appearance.

[0059] During the preparation of each seat crossbeam 2, the crossbeam shape can be first formed using foam molding, with inserts 213 set in the foam, and then carbon fiber composite material can be wound around it, thereby forming the crossbeam shape of this embodiment. Figure 7 The front seat crossbeam 21a and rear seat crossbeam 21b shown have an outer frame 211 as the outer structure and a first structural foam 212 as the inner structure. Furthermore, in the specific structure, both the front seat crossbeam 21a and the rear seat crossbeam 21b preferably have at least two mounting inserts 213 to better suit the installation of the vehicle seat.

[0060] In specific implementation, combined with Figures 4 to 7 As shown, in this embodiment, as a preferred implementation, a reinforcing beam 22 extending along the left-right direction of the vehicle is provided between the front seat crossbeam 21a and the rear seat crossbeam 21b. At this time, combined with... Figure 14 and Figure 17 As shown, the reinforcing beam 22 includes a reinforcing beam frame 221 made of carbon fiber composite material, and a second structural foam 222 disposed in the reinforcing beam frame 221.

[0061] The main advantage of this setup is that it leverages the lightweight, high structural strength and stiffness of carbon fiber composite materials and structural foam to ensure the structural strength of the reinforcing beam 22, further increasing the lateral support capacity of the floor area and also contributing to increasing the overall stiffness of the floor area.

[0062] In this embodiment, the preparation of the reinforcing beam 22 is similar to that of the seat crossbeam 2 described above. The reinforcing beam 22 can be shaped by foam molding first, and then wrapped with carbon fiber composite material, thereby forming the reinforcing beam 22 in this embodiment with the outer frame 221 of the reinforcing beam as the outer structure and the second structure foam 222 as the inner structure.

[0063] Secondly, in this embodiment, as a preferred implementation, the floor body 1 is made of carbon fiber composite material, and combined with... Figure 1 , Figure 15 and Figure 16 As shown, it includes a floor upper plate 11 and a floor lower plate 12 connected together. At the same time, a seat crossbeam 2 and a reinforcing beam 22 are disposed between the floor upper plate 11 and the floor lower plate 12, and the floor upper plate 11 is provided with a perforated hole 113 corresponding to the arrangement of the mounting insert 213.

[0064] Similarly, it is understandable that the floor body 1 is made of carbon fiber composite material. The high stiffness and light weight of carbon fiber composite material can be used to ensure the stiffness of the floor body 1, while also improving the lightweight level of the floor. In specific implementation, the upper floor 11 and the lower floor 12 of this embodiment can be bonded together.

[0065] For specific implementation, please refer to Figure 15 As shown, the floor panel 11 of this embodiment is also provided with a first bulge 114 and a second bulge 115 that bulge upwards along the vertical direction of the vehicle. The first bulge 114 is provided corresponding to the front seat crossbeam 21a, and the second bulge 115 is provided corresponding to the rear seat crossbeam 21b, so as to form an installation space for the front seat crossbeam 21a and the rear seat crossbeam 21b between the floor panel 12 and the floor panel 12.

[0066] Furthermore, in this embodiment, as a preferred implementation, combined with Figure 10 and Figure 11 As shown, a third structural foam 13 is provided between the floor upper plate 11 and the floor lower plate 12, so as to take advantage of the structural foam's small weight, high structural strength and rigidity to ensure the overall rigidity of the floor.

[0067] In addition, in this embodiment, as a preferred implementation, refer to Figures 1 to 7 As shown, the floor body 1 has an upward-bulging central channel 10 in the middle of its left-right direction. Seat beams 2 and reinforcing beams 22 are provided on both sides of the central channel 10. This arrangement of seat beams 2 and reinforcing beams 22 on both sides of the central channel 10 ensures the overall structural strength of the floor.

[0068] Furthermore, as a preferred embodiment, in this embodiment, the top of the central channel 10 is provided with a reinforcing structure 15, which extends from the front end of the central channel 10 to the rear end of the central channel 10, and the top of the rear end of the central channel 10 is an inclined surface 141 that gradually rises in the direction pointing to the rear of the vehicle.

[0069] It is understandable that by setting up the reinforcing structure 15, the overall rigidity of the central channel 10 can be increased, and the ability of the central channel 10 to transmit collision force can be improved. At the same time, the top of the rear end of the central channel 10 is a slope 141 that gradually rises from front to back, which can suppress the rear panel from breaking off and intruding into the passenger compartment when the vehicle is rear-ended, thus improving the safety of the vehicle collision.

[0070] In practice, the front end of the aforementioned central channel 10 is connected to the front bulkhead 3 in the vehicle cabin, and the rear end of the central channel 10 is connected to the rear bulkhead 4 in the vehicle cabin. This allows it to work in conjunction with the left and right door sill beams 5, which helps to improve the overall connection and force transmission effect of the vehicle cabin structure.

[0071] Furthermore, in this embodiment, a first protrusion 14 protruding upwards is provided at the top of the rear end of the central channel 10. The protrusion height of the first protrusion 14 gradually increases along the direction pointing towards the rear panel 4 in the longitudinal direction of the vehicle. This provides excellent support for the rear panel 4, preventing it from breaking off and intruding into the passenger compartment in the event of a rear-end collision, thus improving the overall vehicle collision safety.

[0072] Meanwhile, in this embodiment, the inclined surface 141 is specifically formed on the top of the first protrusion 14. The inclined surface 141 gradually increases in height from front to back, that is, the distance between the inclined surface 141 and the floor body 1 in the vertical direction of the vehicle gradually increases along the direction pointing towards the rear panel 4. Moreover, in the specific structure, the angle formed between the inclined surface 141 and the horizontal plane, that is, the inclination angle of the inclined surface 141, is preferably 20°-60°. This arrangement helps to ensure the supporting performance of the first protrusion 14.

[0073] Furthermore, in specific implementation, the included angle can be 20°, 30°, 40°, 50°, 55°, or 60°, etc. The included angle here should be as large as possible while meeting the arrangement requirements, so as to further ensure the supporting effect of the first protrusion 14.

[0074] In addition, continue to refer to Figure 2 As shown, along the direction pointing towards the rear panel 4, the width of the first protrusion 14 gradually decreases in the left-right direction of the vehicle. The width of the inclined surface 141 also gradually decreases in the left-right direction of the vehicle. This makes the cross-section of the rear end of the center tunnel 10 wider at the bottom and narrower at the top, which helps to increase the support capacity of the rear end of the center tunnel 10 and improves the response to rear-end collisions.

[0075] It should be noted that, in this embodiment, the top of the first protrusion 14 is, in addition to being, Figure 2 In addition to the inclined surface 141 shown, it can also be an arc surface. In this case, it is necessary to ensure that the arc surface is also inclined upwards and backwards of the vehicle to ensure the support effect of the first protrusion 14.

[0076] As a possible implementation method, such as Figure 9 and Figure 10 As shown, the reinforcing structure 15 includes a reinforcing block 151 located at the rear end of the central channel 10 and a reinforcing arm 152 located in front of the reinforcing block 151. The reinforcing arm 152 extends from the front end of the central channel 10 to the rear end of the central channel 10 and is connected to the reinforcing block 151. The top of the reinforcing block 151 is adapted to the top of the first protrusion 14 and is gradually raised in the direction pointing towards the rear panel 4.

[0077] Here, the reinforcing structure 15 is composed of a reinforcing arm 152 and a reinforcing block 151, which makes the reinforcing structure 15 structurally simple, easy to design and form. At the same time, the rear end is the reinforcing block 151, and the top of the reinforcing block 151 is adapted to the top of the first protrusion 14, which can also ensure the support effect on the rear panel 4.

[0078] In terms of specific structure, such as Figure 10 , Figure 17 and Figure 18 As shown, the top of the reinforcing block 151 is adapted to the top of the first protrusion 14. That is, in the longitudinal direction of the vehicle, the protrusion height of the top of the reinforcing block 151 gradually increases in the direction pointing towards the rear panel 4, and the top surface of the reinforcing block 151 is also inclined, thus adapting to the inclined surface 141. In addition, in the direction pointing towards the rear panel 4, the width of the top of the reinforcing block 151 gradually decreases in the lateral direction of the vehicle.

[0079] As a preferred embodiment, reference is still made to... Figure 18 As shown, there are two reinforcing arms 152 arranged side by side in the left-right direction of the vehicle, and the two reinforcing arms 152 are respectively located at the left and right edges of the top of the central channel 10. The two reinforcing arms 152 arranged side by side can make the reinforcing structure 15 have a better reinforcing effect, and can further improve the rigidity and support capacity of the central channel 10.

[0080] In practice, both reinforcing arms 152 are connected to the reinforcing block 151, and the front ends of the two reinforcing arms 152 are connected to the front bulkhead 3, while the reinforcing block 151 is connected to the rear bulkhead 4. Furthermore, each reinforcing arm 152 has a downwardly extending extension portion 1521 on the outer side of its front end, and the extension portion 1521 is located on the side of the central channel 10, which helps to further improve the fixing effect of the reinforcing structure 15 at the top of the central channel 10.

[0081] In this embodiment, as a preferred implementation, it is still as follows: Figure 9 As shown, the central channel 10 includes a central channel upper plate 111 and a central channel lower plate 121 connected together. A cavity is specifically formed between the central channel upper plate 111 and the central channel lower plate 121. The central channel upper plate 111 is formed on the floor upper plate 11, and the central channel lower plate 121 is formed on the floor lower plate 12. Both the central channel upper plate 111 and the central channel lower plate 121 bulge upwards and extend along the longitudinal direction of the vehicle, thus forming the central channel 10.

[0082] To improve the structural utilization of the central channel 10, such as Figure 15 As shown, a recessed portion 112 is provided on the upper plate 111 of the middle channel, and the recessed portion 112 is located between the two reinforcing arms 152. This arrangement makes the shape of the cavity match the shape of the reinforcing structure 15.

[0083] In addition, such as Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, in this embodiment, as a preferred implementation, the top of the central channel 10 forms a cavity located between the floor upper plate 11 and the floor lower plate 12, and the reinforcing structure 15 is formed by a fourth structural foam filling the cavity.

[0084] By forming a cavity, it is beneficial to improve the structural strength and facilitate the arrangement of the reinforcing structure 15. Furthermore, the fact that the reinforcing structure 15 is formed from structural foam ensures the rigidity of the reinforcing structure 15, guarantees its reinforcing effect, and also helps to reduce the weight of the reinforcing structure 15.

[0085] It should be noted that the first structural foam 212, the second structural foam 222, the third structural foam 13, and the fourth structural foam in this embodiment can all be products from existing technologies. For example, they can be PMI (polymethacrylimide) foam, which has excellent mechanical properties, chemical corrosion resistance, and good fire resistance. Of course, in addition to PMI foam, other structural foam materials with high structural stiffness can also be used.

[0086] The vehicle cabin floor structure of this embodiment is constructed by making the seat crossbeam 2 an outer frame made of carbon fiber composite material and structural foam located in the outer frame, and setting inserts in the structural foam for the installation of vehicle seats. The characteristics of carbon fiber composite material and structural foam, which are light in weight, high in structural strength and rigidity, can not only ensure the strength of the seat crossbeam 2 and play the role of lateral support for the floor, but also help to reduce the weight of the seat crossbeam 2, thus facilitating the lightweight design of the whole vehicle.

[0087] Example 2

[0088] This embodiment relates to a vehicle, in which the vehicle cabin is equipped with the vehicle cabin floor structure of Embodiment 1.

[0089] The vehicle in this embodiment, by setting the vehicle cabin floor structure in Embodiment 1, can improve the installation stability of the vehicle seats and facilitate the lightweight design of the whole vehicle. Therefore, it is suitable for application in high-performance vehicles with low and streamlined body, and can improve the overall vehicle quality and market competitiveness.

[0090] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle cabin floor structure, characterized in that: comprising a floor body (1), and a seat cross beam (2) extending along the left-right direction of the vehicle and arranged on the floor body (1); the seat cross beam (2) comprises a cross beam outer frame (211) made of carbon fiber composite material, and a first structural foam (212) arranged in the cross beam outer frame (211), and a mounting insert (213) is embedded in the first structural foam (212), and a seat mounting point is arranged on the mounting insert (213).

2. The vehicle cabin floor structure according to claim 1, characterized in that: one end of the mounting insert (213) connected with the vehicle seat is exposed outside the cross beam outer frame (211); and / or, the seat mounting point comprises a seat mounting hole (2131) arranged on the mounting insert (213).

3. The vehicle cabin floor structure according to claim 1, characterized in that: the seat cross beam (2) comprises a front seat cross beam (21a) and a rear seat cross beam (21b) arranged in the front-rear direction of the vehicle.

4. The vehicle cabin floor structure according to claim 3, characterized in that: a reinforcing beam (22) extending along the left-right direction of the vehicle is arranged between the front seat cross beam (21a) and the rear seat cross beam (21b); the reinforcing beam (22) comprises a reinforcing beam outer frame (221) made of carbon fiber composite material, and a second structural foam (222) arranged in the reinforcing beam outer frame (221).

5. The vehicle cabin floor structure according to claim 4, characterized in that: the floor body (1) is made of carbon fiber composite material and comprises a floor upper plate (11) and a floor lower plate (12) connected together; the seat cross beam (2) and the reinforcing beam (22) are arranged between the floor upper plate (11) and the floor lower plate (12), and a hollow hole (113) corresponding to the arrangement of the mounting insert (213) is arranged on the floor upper plate (11).

6. The vehicle cabin floor structure according to claim 5, characterized in that: a third structural foam (13) is arranged between the floor upper plate (11) and the floor lower plate (12).

7. The vehicle cabin floor structure according to claim 5, characterized in that: a middle channel (10) bulging upward is arranged at the middle part of the floor body (1) in the left-right direction, and the seat cross beam (2) and the reinforcing beam (22) are arranged on both sides of the middle channel (10).

8. The vehicle cabin floor structure according to claim 7, characterized in that: a reinforcing structure (15) is arranged on the top of the middle channel (10), the reinforcing structure (15) penetrates from the front end of the middle channel (10) to the rear end of the middle channel (10), and the top of the rear end of the middle channel (10) is a slope (141) gradually increasing in the direction pointing to the rear of the vehicle.

9. The vehicle cabin floor structure according to claim 8, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The top of the middle channel (10) is formed with a cavity between the floor upper plate (11) and the floor lower plate (12), and the reinforcing structure (15) is formed by a fourth structural foam filled in the cavity.

10. A vehicle, characterized by: The vehicle cabin floor structure according to any one of claims 1 to 9 is arranged in a vehicle cabin of the vehicle.

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