Vehicle body floor assembly and vehicle

Abstract

The utility model provides a vehicle body floor assembly and a vehicle, the vehicle body floor assembly comprises threshold beams arranged on the left side and the right side respectively, and a floor connected between the threshold beams on the two sides; the doorsill beams on the two sides are made of carbon fiber composite materials, lap joint plates are arranged on the sides, connected with the floor, of the doorsill beams on the two sides, and the left side and the right side of the floor are in lap joint with the lap joint plates on the corresponding sides respectively. According to the vehicle body floor assembly, the rigidity of the doorsill beam can be guaranteed, meanwhile, the lightweight design of the doorsill beam is facilitated, the connecting strength between the floor and the doorsill beam can be guaranteed, the overall rigidity of the vehicle body floor position is guaranteed, and therefore improvement of the quality of the whole vehicle is facilitated.

Description

Technical Field

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

[0002] In existing technologies, door sill beams are typically made of stamped sheet metal and welded together from multiple sheet metal panels. While this structure meets structural strength requirements, it also suffers from significant weight, which contradicts current trends in lightweight vehicle design. Furthermore, the existing connection between the door sill beam and the inner floor generally involves the side of the floor overlapping the side wall of the door sill beam and then being welded together. This connection method lacks vertical support for the floor, limiting the increase in connection strength between the floor and the door sill beam, and thus hindering the improvement of overall vehicle quality. Utility Model Content

[0003] In view of this, the present invention aims to provide a vehicle floor assembly to improve the safety of the entire vehicle.

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

[0005] A vehicle floor assembly includes sill beams disposed on the left and right sides, and a floor connecting the two sill beams.

[0006] Both sill beams are made of carbon fiber composite material, and an overlap plate is provided on the side where the sill beams on each side connect to the floor. The left and right sides of the floor overlap the corresponding overlap plates.

[0007] Furthermore, the floor has upturned flanges on both the left and right sides, and each of the left and right sides of the floor has a first overlapping surface at the bottom of the floor and a second overlapping surface on the flange; the first overlapping surface overlaps the overlapping plate, and the second overlapping surface overlaps the side wall of the threshold beam.

[0008] Furthermore, the floor is made of carbon fiber composite material, and the first overlapping surface is bonded to the overlapping plate, and the second overlapping surface is bonded to the side wall of the threshold beam.

[0009] Furthermore, the floor includes an upper floor panel and a lower floor panel connected together, and a first structural foam is provided between the upper floor panel and the lower floor panel.

[0010] Furthermore, a seat crossbeam extending along the left-right direction of the vehicle is provided between the upper floor of the floor and the lower floor; the seat crossbeam includes a crossbeam frame made of carbon fiber composite material, and a second structural foam disposed in the crossbeam frame, wherein a mounting insert is embedded in the second structural foam, and the mounting insert is provided with a seat mounting point.

[0011] 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, and 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 frame made of carbon fiber composite material, and a third structural foam disposed in the reinforcing beam frame.

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

[0013] Furthermore, each of the two sill beams has an inner cavity, and a partition is provided in the inner cavity. The partition is connected between the left and right side walls of the inner cavity, and multiple partitions are arranged at intervals along the front-rear direction of the vehicle. Each of the front seat crossbeams, the rear seat crossbeams, and the reinforcing beams are respectively arranged opposite to one of the partitions in the left-right direction of the vehicle.

[0014] Furthermore, each of the partitions includes a fourth structural foam located in the middle, and outer panels located on the front and rear sides of the fourth structural foam, and the outer panels on both sides are made of carbon fiber composite material.

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

[0016] The vehicle floor assembly described in this utility model utilizes carbon fiber composite material for the sill beam. This material's high rigidity and light weight ensure the sill beam's rigidity and also facilitates its lightweight design. Furthermore, an overlap plate is installed on the sill beam, allowing the side of the floor to overlap onto it. This supportive connection between the floor and the sill beam ensures the connection strength between them, guaranteeing the overall rigidity of the floor and thus improving the overall vehicle quality.

[0017] Furthermore, by adding a flange to the side of the floor, creating an "L" shape with two overlapping surfaces that connect with the sill beam, the connection strength between the floor and the sill beam is better guaranteed. The floor is made of carbon fiber composite material, ensuring its rigidity and contributing to weight reduction. The floor consists of upper and lower panels, facilitating fabrication and increasing rigidity. The inclusion of a first structural foam further leverages its high rigidity and light weight, achieving both weight reduction and improved overall floor rigidity.

[0018] Furthermore, the seat crossbeams are constructed with a carbon fiber composite frame and structural foam within that frame. Utilizing the lightweight, high strength, and rigidity of both carbon fiber composites and structural foam ensures the strength of the seat crossbeams, provides excellent lateral support to the floor, and contributes to weight reduction for both the seat crossbeams and the floor. The seat crossbeams are arranged in two spaced-ahead configurations, ensuring reliable seat installation and providing better lateral support, thus improving floor rigidity. The addition of reinforcing beams further enhances the lateral support capacity of the floor and contributes to overall floor rigidity. The reinforcing beams, with their carbon fiber frame and structural foam, also contribute to their rigidity and weight reduction.

[0019] In addition, seat crossbeams and reinforcing beams are installed on both sides of the central tunnel to ensure the overall structural strength of the floor. By installing partitions in the sill beam cavity, with each seat crossbeam and reinforcing beam facing one of the partitions, not only can the structural strength of the sill beam be increased by the partitions, but the collision force can also be transferred to the seat crossbeams in the event of a side collision. This increases the collision force transmission effect between the sill beam, seat crossbeam, and reinforcing beam, thus improving the overall vehicle collision safety. The partitions adopt a sandwich structure consisting of carbon fiber outer plates on both sides and structural foam in the middle. The high stiffness and light weight of carbon fiber composite materials and structural foam ensure the rigidity of the partitions, improving their structural reinforcement and collision force transmission capabilities.

[0020] Another objective of this invention is to provide a vehicle having a body floor assembly as described above.

[0021] The vehicle described in this utility model is equipped with the aforementioned body floor assembly, which not only helps to ensure the rigidity of the entire vehicle, but also helps to improve the lightweight of the entire vehicle, thereby improving the overall quality of the vehicle. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the overall structure of the vehicle floor assembly described in this embodiment of the present utility model;

[0024] Figure 2 and Figure 3 for Figure 1 The structural diagrams shown are presented from different perspectives.

[0025] Figure 4 This is a schematic diagram of the assembly of the floor and the threshold beam according to an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Top view of the structure shown;

[0027] Figure 6 for Figure 5 Sectional view along the middle AA direction;

[0028] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0029] Figure 8 for Figure 5 Sectional view along the BB direction;

[0030] Figure 9 for Figure 8 Enlarged view at point D;

[0031] Figure 10 for Figure 4 A schematic diagram of the structure shown from another perspective;

[0032] Figure 11 for Figure 10 A sectional view along the EE direction;

[0033] Figure 12 This is a schematic diagram of the structure of the partition described in an embodiment of the present utility model;

[0034] Figure 13 This is a schematic diagram of the vehicle floor assembly described in this embodiment of the present invention when the floor plate is removed;

[0035] Figure 14 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;

[0036] Figure 15 This is a schematic diagram of one structure of the mounting insert described in an embodiment of the present utility model;

[0037] Figure 16 This is another structural schematic diagram of the mounting insert described in an embodiment of the present utility model;

[0038] Figure 17 This is a schematic diagram of the structure of the reinforcing beam outer frame described in an embodiment of the present utility model;

[0039] Figure 18 This is a schematic diagram of the structure of the floor panel of the present invention.

[0040] Figure 19 This is a schematic diagram of the structure of the floor underboard according to an embodiment of the present utility model;

[0041] Figure 20 This is a schematic diagram of the structure of each foam structure described in the embodiments of this utility model;

[0042] Figure 21 This is a schematic diagram of the reinforcing structure described in an embodiment of the present utility model;

[0043] Figure 22 for Figure 4 A schematic diagram of the structure shown from another perspective;

[0044] Figure 23 This is a schematic diagram of the structure of the floor described in an embodiment of the present utility model;

[0045] Figure 24 This is a schematic diagram of the sill beam described in an embodiment of the present utility model;

[0046] Explanation of reference numerals in the attached figures:

[0047] 1. Floor; 10. Central channel; 11. Floor top plate; 111. Central channel top plate; 112. Recessed portion; 113. Hollowed-out hole; 114. First bulge portion; 115. Second bulge portion; 12. Floor bottom plate; 121. Central channel bottom plate; 122. First overlapping surface; 13. First structural foam; 14. First protrusion; 141. Sloping surface; 15. Reinforcing structure; 151. Reinforcing block; 152. Reinforcing arm; 1521. Extension portion; 16. Flanged edge; 161. Second overlapping surface;

[0048] 2. Seat crossbeam; 21a. Front seat crossbeam; 21b. Rear seat crossbeam; 211. Crossbeam outer frame; 212. Second structural foam; 213. Mounting insert; 2131. Seat mounting hole; 22. Reinforcing beam; 221. Reinforcing beam outer frame; 222. Third structural foam;

[0049] 3. Front panel; 4. Rear panel;

[0050] 5. Threshold beam; 50. Inner cavity; 51. Partition; 511. Outer panel; 512. Fourth structural foam; 52. Overlap board. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0052] 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.

[0053] Taking the vehicle in which the body floor assembly 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 component. 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."

[0054] 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.

[0055] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0056] Example 1

[0057] This embodiment relates to a vehicle floor assembly that can ensure the connection strength between the floor 1 and the sill beam 5, while also facilitating the lightweighting of the entire vehicle.

[0058] In terms of overall structure, such as Figures 1 to 24 As shown, the vehicle floor assembly of this embodiment includes sill beams 5 disposed on the left and right sides, and a floor 1 connecting the two sill beams 5. Both sill beams 5 are made of carbon fiber composite material, and an overlap plate 52 is provided on the side where each sill beam 5 connects to the floor 1. The left and right sides of the floor 1 overlap the corresponding overlap plate 52.

[0059] At this point, the high stiffness and light weight of carbon fiber material can be used to ensure the stiffness of the sill beam 5, while also facilitating the lightweight design of the sill beam 5. Furthermore, the supportive connection between the floor 1 and the sill beam 5 can be used to ensure the connection strength between the floor 1 and the sill beam 5, thereby ensuring the overall stiffness of the floor 1 position, which is beneficial to improving the overall quality of the vehicle.

[0060] Based on the above overall introduction, in detail, in this embodiment, the vehicle body structure in which the vehicle floor assembly is located also includes a front bulkhead 3 and a rear bulkhead 4 located at the front and rear ends of the vehicle floor assembly. The front end of each side sill beam 5 is connected to the front bulkhead 3, and the rear end of each side sill beam 5 is connected to the rear bulkhead 4. Of course, any related structural parts not mentioned in the vehicle floor assembly of this embodiment can be referred to the various structures in the vehicle body structure known to those skilled in the art, and will not be described in detail here.

[0061] In this embodiment, as a preferred implementation, combined with Figure 19 , Figures 22 to 24 As shown, the floor 1 has upturned flanges 16 on both the left and right sides, and each of the left and right sides of the floor 1 has a first overlapping surface 122 at the bottom of the floor 1 and a second overlapping surface 161 on the flange 16. In the specific structure, the first overlapping surface 122 overlaps on the overlapping plate 52, and the second overlapping surface 161 overlaps on the side wall of the threshold beam 5.

[0062] Therefore, by setting a flange 16 on the side of the floor 1, the side of the floor 1 is made to be "L" shaped and has two overlapping surfaces that overlap with the threshold beam 5, which can better ensure the connection strength between the floor 1 and the threshold beam 5.

[0063] Secondly, as a preferred embodiment, the floor 1 in this example is made of carbon fiber composite material, and the first overlapping surface 122 is bonded to the overlapping plate 52, and the second overlapping surface 161 is bonded to the side wall of the threshold beam 5. Here, the floor 1 is made of carbon fiber composite material, which can also ensure the rigidity of the floor 1 and facilitate the weight reduction of the floor 1.

[0064] In specific implementation, this embodiment, as a preferred implementation, combines... Figure 1 , Figures 5 to 9 as well as Figure 20 As shown, the floor 1 includes an upper floor 11 and a lower floor 12 connected together, and a first structural foam 13 is provided between the upper floor 11 and the lower floor 12.

[0065] It is understandable that the floor 1 is composed of upper and lower panels, which facilitates manufacturing and increases the rigidity of the floor 1. By setting the first structural foam 13, the characteristics of high rigidity and light weight of the structural foam can be utilized to improve the overall rigidity of the floor 1 while achieving weight reduction. Furthermore, it is worth mentioning that the upper floor 11 of this embodiment has a first flange with an upward folded edge on its four edges, and the lower floor 12 has a second flange with an upward folded edge on its four edges. The flange 16 of this embodiment includes both the first flange and the second flange. The first flange and the second flange are bonded together, and the floor 1 is connected to the surrounding components through the second flange.

[0066] like Figures 4 to 7 As shown, in this embodiment, as a preferred implementation, a seat crossbeam 2 extending along the left-right direction of the vehicle is provided between the floor upper plate 11 and the floor lower plate 12. The seat crossbeam 2 includes a crossbeam frame 211 made of carbon fiber composite material, and a second structural foam 212 disposed in the crossbeam frame 211, and a mounting insert 213 is embedded in the second structural foam 212, and a seat mounting point is provided on the mounting insert 213.

[0067] The main advantage of this design is that the seat beam 2 is made of a frame made of carbon fiber composite material and structural foam located within the frame. By utilizing the characteristics of carbon fiber composite material and structural foam, which are lightweight, have high structural strength and rigidity, the strength of the seat beam 2 can be guaranteed, providing better lateral support for the floor 1, and also helping to reduce the weight of the seat beam 2 and the floor 1.

[0068] In specific implementation, in this embodiment, as a preferred embodiment, 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.

[0069] At the same time, as a preferred embodiment, in this example, such as Figure 15 and Figure 16 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.

[0070] Furthermore, the mounting insert 213 in 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. Meanwhile, 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-right direction of the vehicle, located on the seat crossbeam 2.

[0071] 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 15 One of the ones shown can also be set to Figure 16 The two numbers shown only need to match the number of mounting holes on the vehicle seat.

[0072] Secondly, in this embodiment, as a preferred implementation, it is still as follows Figure 2 , Figure 3 , Figure 7 and Figure 11 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, and 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.

[0073] The arrangement of two seat beams 2 spaced apart front and rear ensures the reliability of the vehicle seat installation and provides better lateral support, which helps to improve the rigidity of the floor 1. The addition of reinforcing beam 22 further increases the lateral support capacity of the floor 1 and also helps to increase the overall rigidity of the floor 1.

[0074] Furthermore, as a preferred embodiment, the reinforcing beam 22 in this embodiment includes a reinforcing beam frame 221 made of carbon fiber composite material, and a third structural foam 222 disposed within the reinforcing beam frame 221. Thus, the use of a carbon fiber frame and structural foam for the reinforcing beam 22 helps ensure the rigidity of the reinforcing beam 22 and facilitates weight reduction.

[0075] 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 14 The crossbeam outer frame 211 shown, and the second structural foam 212 disposed within the crossbeam outer frame 211 (as shown in the figure) Figure 20 As shown in the figure, the outer frame of the crossbeam 211 and the second structural foam 212 both have a rectangular shape in overall appearance.

[0076] 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 structure of crossbeam frame 211 and an inner structure of second structure foam 212. Moreover, in the specific structure, both the front seat crossbeam 21a and the rear seat crossbeam 21b are preferably provided with at least two mounting inserts 213 to better suit the installation of vehicle seats.

[0077] Of course, the specific preparation of the reinforcing beam 22 in this embodiment is similar to the preparation process of the seat crossbeam 2 described above. The reinforcing beam 22 can be shaped by foam molding first, and then carbon fiber composite material can be wound around it, thereby forming the reinforcing beam 22 in this embodiment with the outer frame of the reinforcing beam 22 as the outer structure and the third structure foam 222 as the inner structure.

[0078] In practice, each seat crossbeam 2 and reinforcing beam 22 are located between the floor upper plate 11 and the floor lower plate 12, and the floor upper plate 11 is provided with hollow holes 113 corresponding to the installation inserts 213, and the floor upper plate 11 and the floor lower plate 12 are bonded together.

[0079] See Figure 18 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.

[0080] In addition, in this embodiment, as a preferred implementation, reference is made to... Figure 2 , Figure 7 and Figure 11 As shown, a central channel 10 with an upward bulge is provided in the middle of the left-right direction of the floor 1. Seat beams 2 and reinforcing beams 22 are provided on both the left and right sides of the central channel 10. Here, the provision of seat beams 2 and reinforcing beams 22 on both sides of the central channel 10 ensures the overall structural strength of the floor 1.

[0081] Furthermore, combined Figure 2 and Figure 13 As shown, and also 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.

[0082] 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.

[0083] In practice, the front end of the aforementioned central channel 10 is connected to the front bulkhead 3 in the vehicle body structure, and the rear end of the central channel 10 is connected to the rear bulkhead 4 in the vehicle body structure. This allows it to work in conjunction with the left and right door sill beams 5, which helps to improve the force transmission effect of the whole vehicle.

[0084] 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.

[0085] 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 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] As a possible implementation method, such as Figure 21 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.

[0090] 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.

[0091] In terms of specific structure, such as Figure 2 , Figure 13 , Figure 20 and Figure 21 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.

[0092] As a preferred embodiment, reference is still made to... Figure 2 and Figure 21 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.

[0093] 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.

[0094] In this embodiment, it remains 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.

[0095] To improve the structural utilization of the central channel 10, such as Figure 18As 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.

[0096] In addition, such as Figure 8 , Figure 9 and Figure 13 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 fifth structural foam filling the cavity.

[0097] 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.

[0098] In addition, in this embodiment, as a preferred implementation, such as Figure 10 and Figure 11 As shown, each of the two side door sill beams 5 has an inner cavity 50, and a partition 51 is provided in the inner cavity 50. The partition 51 is connected between the left and right side walls of the inner cavity 50, and multiple partitions 51 are arranged at intervals along the front-rear direction of the vehicle. At the same time, each front seat crossbeam 21a, rear seat crossbeam 21b, and reinforcing beam 22 is arranged opposite to one of the partitions 51 in the left-right direction of the vehicle.

[0099] It is understandable that by setting a partition 51 in the inner cavity of the sill beam 5, and arranging each seat crossbeam 2 and reinforcing beam 22 opposite to one of the partitions 51, not only can the structural strength of the sill beam 5 be increased by using the partition 51, but also the collision force can be transmitted to the seat crossbeam 2 through the partition 51 during a side collision, thereby increasing the collision force transmission effect between the sill beam 5, the seat crossbeam 2, and the reinforcing beam 22, which helps to improve the collision safety of the entire vehicle.

[0100] Specifically, multiple partitions 51 are arranged one-to-one in the inner cavities 50 on both sides, which helps to increase the impact force transmission effect between the sill beam 5 and the seat crossbeam 2. Secondly, the number of partitions 51 in this embodiment can be set and adjusted according to the actual structural reinforcement requirements and impact force transmission requirements of the sill beam 5. For example, each side sill beam 5 can be provided with five or six partitions arranged at intervals along the front-rear direction of the vehicle.

[0101] Furthermore, see Figure 12 As shown, in this embodiment, as a preferred implementation, each partition 51 includes a fourth structural foam 512 located in the middle, and outer panels 511 located on the front and rear sides of the fourth structural foam 512, and both outer panels 511 are made of carbon fiber composite material.

[0102] Here, the partition 51 adopts a sandwich structure consisting of carbon fiber outer plates 511 on both sides and structural foam in the middle. The high stiffness and light weight of carbon fiber composite materials and structural foam can be used to ensure the stiffness of the partition 51 and improve the structural reinforcement and impact force transmission capability of the partition 51.

[0103] It should be noted that the first structural foam 13, the second structural foam 212, the third structural foam 222, the fourth structural foam 512, and the fifth 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.

[0104] In this embodiment, the vehicle floor assembly uses carbon fiber composite material to make the sill beam 5. The high rigidity and light weight of carbon fiber material can be used to ensure the rigidity of the sill beam 5, and it is also conducive to the lightweight design of the sill beam 5. Furthermore, an overlap plate 52 is provided on the sill beam 5, so that the side of the floor 1 overlaps on the overlap plate 52. The support-type connection between the floor 1 and the sill beam 5 can also be used to ensure the connection strength between the floor 1 and the sill beam 5, and ensure the overall rigidity of the floor 1 position, which is conducive to improving the overall quality of the vehicle.

[0105] Example 2

[0106] This embodiment relates to a vehicle, which is equipped with the body floor assembly of Embodiment 1.

[0107] The vehicle in this embodiment, by incorporating the body floor assembly as described in Embodiment 1, benefits from improved vehicle rigidity and lightweighting, thereby enhancing overall vehicle quality and market competitiveness.

[0108] 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 body floor assembly, characterized in that: comprising a rocker beam (5) arranged on left and right sides, and a floor (1) connected between the rocker beams (5) on the left and right sides; both the rocker beams (5) on the left and right sides are made of carbon fiber composite material, and each of the rocker beams (5) is provided with a lap plate (52) on the side connected with the floor (1), and the left and right sides of the floor (1) are respectively lapped on the corresponding side of the lap plate (52).

2. The vehicle body floor assembly according to claim 1, characterized in that: both the left and right sides of the floor (1) are provided with an upturned arrangement of a flange (16), and both the left and right sides of the floor (1) have a first lap surface (122) located at the bottom of the floor (1), and a second lap surface (161) located on the flange (16); the first lap surface (122) is lapped on the lap plate (52), and the second lap surface (161) is lapped on the side wall of the rocker beam (5).

3. The vehicle body floor assembly according to claim 2, characterized in that: the floor (1) is made of carbon fiber composite material, and the first lap surface (122) and the lap plate (52) are adhesively connected, and the second lap surface (161) and the side wall of the rocker beam (5) are adhesively connected.

4. The vehicle body floor assembly according to claim 3, characterized in that: the floor (1) comprises a floor upper plate (11) and a floor lower plate (12) connected together, and a first structural foam (13) is arranged between the floor upper plate (11) and the floor lower plate (12).

5. The vehicle body floor assembly according to claim 4, characterized in that: a seat cross beam (2) extending along the left and right directions of the whole vehicle is arranged between the floor upper plate (11) and the floor lower plate (12); the seat cross beam (2) comprises a cross beam outer frame (211) made of carbon fiber composite material, and a second structural foam (212) arranged in the cross beam outer frame (211), and an installation insert (213) is embedded in the second structural foam (212), and a seat mounting point is arranged on the installation insert (213).

6. The vehicle body floor assembly according to claim 5, characterized in that: the seat cross beam (2) comprises a front seat cross beam (21a) and a rear seat cross beam (21b) arranged in a spaced manner along the front and rear directions of the whole vehicle, and a reinforcing beam (22) extending along the left and right directions of the whole 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 third structural foam (222) arranged in the reinforcing beam outer frame (221).

7. The vehicle body floor assembly according to claim 6, characterized in that: a middle channel (10) bulging upward is arranged in the middle part of the floor (1) in the left and right directions, and the left and right sides of the middle channel (10) are respectively provided with the seat cross beam (2) and the reinforcing beam (22).

8. The vehicle body floor assembly according to claim 7, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Both of the rocker beams (5) are formed with inner cavities (50), and the inner cavities (50) are provided with partitions (51) connected between the left and right side walls of the inner cavities (50), and the partitions (51) are a plurality of partitions arranged along the front-rear direction of the vehicle in intervals; Each of the front seat cross beams (21a), the rear seat cross beams (21b) and the reinforcing beams (22) is arranged in the left-right direction of the vehicle in opposition to one of the partitions (51).

9. The vehicle body floor assembly of claim 8, wherein: Each of the partitions (51) comprises a fourth structural foam (512) in the middle and outer plates (511) on both sides of the fourth structural foam (512), and both of the outer plates (511) are made of carbon fiber composite material.

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body floor assembly according to any one of claims 1 to 9.

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