Vehicle body structure and vehicle

Abstract

The utility model provides a vehicle body structure and a vehicle. The vehicle body structure comprises threshold beams arranged on the left side and the right side respectively and a vehicle body floor located between the threshold beams on the two sides. An inner cavity is formed in the doorsill beam on at least one side, partition plates are arranged in the inner cavity, the partition plates are connected between the left side wall and the right side wall of the inner cavity, and the multiple partition plates are arranged in the front-back direction of the whole vehicle at intervals. A seat cross beam extending in the left-right direction of the whole vehicle is arranged in the vehicle body floor, and the seat cross beam is right opposite to one partition plate in the left-right direction of the whole vehicle. The vehicle body structure is high in structural strength, meanwhile, the collision force transmission effect between the doorsill beam and the seat cross beam can be improved, and therefore the collision safety quality of the whole vehicle can be improved.

Description

Technical Field

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

[0002] Currently, in traditional vehicle body structures, sill beams are typically made of stamped sheet metal, with inner and outer panels fastened together to form a beam with a closed cavity. While existing sill beam structures possess a certain structural strength, in vehicle collisions, especially side impacts, they can only transfer collision forces to the seat crossbeams on the vehicle floor using the sill beam's own sheet metal structure. This singular method of force transfer limits the effectiveness of force transmission between the sill beam and the seat crossbeams, thus hindering improvements in overall vehicle collision safety. Utility Model Content

[0003] In view of this, the present invention aims to propose a vehicle body structure that can improve the collision 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 body structure includes sill beams disposed on the left and right sides, and a vehicle body floor located between the two sill beams.

[0006] At least one side of the sill beam 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 the partition is a plurality of partitions arranged at intervals along the front-rear direction of the vehicle.

[0007] The vehicle floor is provided with a seat beam extending in the left-right direction of the vehicle, and the seat beam and one of the partitions are arranged facing each other in the left-right direction of the vehicle.

[0008] Furthermore, each of the partitions includes a first structural foam located in the middle, and outer panels located on the front and rear sides of the first structural foam, and the outer panels on both sides are made of carbon fiber composite material.

[0009] Furthermore, the sill beam is made of carbon fiber composite material.

[0010] Furthermore, 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 the front seat crossbeam and the rear seat crossbeam are respectively arranged opposite to one of the partitions in the left-right direction of the vehicle.

[0012] 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 frame made of carbon fiber composite material, and a third structural foam disposed in the reinforcing beam frame; the reinforcing beam and one of the partitions are arranged facing each other in the left-right direction of the vehicle.

[0013] Furthermore, the vehicle floor is made of carbon fiber composite material and includes an upper floor panel and a lower floor panel connected together; each of the seat crossbeams and the reinforcing beams are disposed between the upper floor panel and the lower floor panel, and a fourth structural foam is provided between the upper floor panel and the lower floor panel, and the upper floor panel has perforations corresponding to the arrangement of the mounting inserts.

[0014] Furthermore, the vehicle 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.

[0015] 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.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] The vehicle body structure described in this utility model, by setting a partition in the inner cavity of the sill beam and arranging the seat crossbeam directly opposite one of the partitions, not only increases the structural strength of the sill beam by utilizing the partition, but also transmits the collision force to the seat crossbeam through the partition during a side collision, thereby increasing the collision force transmission effect between the sill beam and the seat crossbeam and helping to improve the collision safety of the entire vehicle.

[0018] Furthermore, the partition adopts a sandwich structure consisting of carbon fiber outer plates on both sides and structural foam in the middle. This utilizes the high stiffness and light weight of carbon fiber composite materials and structural foam to ensure the rigidity of the partition, thereby improving its structural strength and impact force transmission capability. Similarly, the seat crossbeam is constructed from a carbon fiber composite frame and structural foam within that frame. Leveraging the low weight, high structural strength, and high stiffness of carbon fiber composite materials and structural foam, the strength of the seat crossbeam is ensured, providing better lateral support to the vehicle floor and also contributing to weight reduction for both the seat crossbeam and the vehicle floor.

[0019] Furthermore, the seat crossbeams are arranged in two spaced-ahead configurations, ensuring the reliability of the vehicle seat installation and providing better lateral support, which helps improve the rigidity of the floor area. The addition of a reinforcing beam further enhances the lateral support capacity of the floor area and contributes to its overall rigidity. This reinforcing beam is also positioned directly opposite one of the partitions, further improving the transmission of impact forces between the sill beam and the vehicle floor.

[0020] Furthermore, the vehicle floor consists of upper and lower panels made of carbon fiber composite materials, with structural foam positioned between them. The high stiffness and lightweight properties of carbon fiber composite materials and structural foam ensure floor rigidity while also contributing to weight reduction. Seat beams and reinforcing beams are installed on both sides of the central tunnel to ensure the overall structural strength of the floor. This reinforcement structure increases the overall rigidity of the central tunnel and enhances its ability to transmit collision forces. Additionally, the sloping top of the rear end of the central tunnel, gradually increasing from front to rear, helps to prevent the rear panel from breaking off and intruding into the passenger compartment in the event of a rear-end collision, thus improving overall vehicle collision safety.

[0021] Another objective of this invention is to provide a vehicle having the body structure described above.

[0022] The vehicle described in this utility model has the above-mentioned body structure, which enables the sill beam to have good structural strength and also improves the impact force transmission effect between the sill beam and the seat crossbeam, thereby improving the overall vehicle safety quality. Attached Figure Description

[0023] 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:

[0024] Figure 1 This is a schematic diagram of the overall structure of the vehicle body structure described in this embodiment of the utility model;

[0025] Figure 2 and Figure 3 for Figure 1 The structural diagrams shown are presented from different perspectives.

[0026] Figure 4 This is a structural diagram illustrating the assembly of the vehicle floor and sill beam according to an embodiment of the present invention.

[0027] Figure 5 for Figure 4 Top view of the structure shown;

[0028] Figure 6 for Figure 5 Sectional view along the middle AA direction;

[0029] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0030] Figure 8 for Figure 5 Sectional view along the BB direction;

[0031] Figure 9 for Figure 8 Enlarged view at point D;

[0032] Figure 10 for Figure 4 A schematic diagram of the structure shown from another perspective;

[0033] Figure 11 for Figure 10 A sectional view along the EE direction;

[0034] Figure 12 This is a schematic diagram of the structure of the partition described in an embodiment of the present utility model;

[0035] Figure 13 This is a schematic diagram of the vehicle body structure described in this embodiment of the present invention when the floor plate is removed;

[0036] 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;

[0037] Figure 15 This is a schematic diagram of one structure of the mounting insert described in an embodiment of the present utility model;

[0038] Figure 16 This is another structural schematic diagram of the mounting insert described in an embodiment of the present utility model;

[0039] 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;

[0040] Figure 18 This is a schematic diagram of the structure of the floor panel of the present invention.

[0041] Figure 19 This is a schematic diagram of the structure of the floor underboard according to an embodiment of the present utility model;

[0042] Figure 20 This is a schematic diagram of the structure of each foam structure described in the embodiments of this utility model;

[0043] Figure 21 This is a schematic diagram of the reinforcing structure described in an embodiment of the present utility model;

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Vehicle floor; 10. Central tunnel; 11. Floor top plate; 111. Central tunnel top plate; 112. Recessed portion; 113. Hollowed-out hole; 114. First bulge; 115. Second bulge; 12. Floor bottom plate; 121. Central tunnel bottom plate; 13. Fourth structural foam; 14. First protrusion; 141. Sloping surface; 15. Reinforcing structure; 151. Reinforcing block; 152. Reinforcing arm; 1521. Extension portion;

[0046] 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;

[0047] 3. Front panel; 4. Rear panel;

[0048] 5. Threshold beam; 50. Inner cavity; 51. Partition; 511. Outer panel; 512. First structural foam. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0050] 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.

[0051] Taking the vehicle body structure described in this utility model 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 side being "outer."

[0052] 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.

[0053] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] Example 1

[0055] This embodiment relates to a vehicle body structure that can increase the sill beam 5 while improving the collision force transmission effect between the sill beam 5 and the seat crossbeam 2, thereby improving the overall vehicle collision safety and market competitiveness.

[0056] In terms of overall structure, such as Figures 1 to 21 As shown, the vehicle body structure of this embodiment includes sill beams 5 disposed on the left and right sides, and a vehicle body floor 1 located between the two sill beams 5.

[0057] Furthermore, at least one side of the door sill beam 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, a seat crossbeam 2 extending along the left-right direction of the vehicle is provided in the vehicle floor 1, and the seat crossbeam 2 and one of the partitions 51 are arranged facing each other in the left-right direction of the vehicle.

[0058] At this time, as set up above, the partition 51 is used to increase the structural strength of the sill beam 5. At the same time, when the vehicle is involved in a side collision, the partition 51 can transmit the collision force to the seat crossbeam 2, thereby increasing the collision force transmission effect between the sill beam 5 and the seat crossbeam 2, which helps to improve the overall vehicle collision safety.

[0059] Based on the above overview, in detail, in this embodiment, as a preferred implementation, such as... Figure 10 and Figure 11 As shown, both sides of the sill beam 5 have an inner cavity 50, and each inner cavity 50 is also provided with multiple partitions 51 connected between the left and right side walls of the inner cavity 50. At the same time, the multiple partitions 51 in the inner cavities 50 on both sides are arranged one-to-one, which helps to increase the transmission effect of collision force between the sill beam 5 and the seat crossbeam 2.

[0060] Secondly, the number of partitions 51 in this embodiment can be set and adjusted according to the actual structural reinforcement requirements and collision force transmission requirements of the sill beam 5. For example, each side sill beam 5 may have five or six partitions arranged at intervals along the front and rear direction of the vehicle.

[0061] Furthermore, it is worth mentioning that the vehicle body structure of this embodiment also includes a front bulkhead 3 and a rear bulkhead 4 located at the front and rear ends of the vehicle body floor 1, and 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 body structure of this embodiment can be referred to the various structures in the vehicle body assembly known to those skilled in the art, and will not be described in detail here.

[0062] In this embodiment, as a preferred implementation, see [reference needed]. Figure 12 As shown, each partition 51 includes a first structural foam 512 located in the middle, and outer panels 511 located on the front and rear sides of the first structural foam 512, and both outer panels 511 are made of carbon fiber composite material.

[0063] 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, thereby improving the structural strength and impact force transmission capacity of the partition 51. In specific implementation, the partition 51 can be bonded to the side wall of the sill beam 5 through the outer plates 511 on both sides.

[0064] It should be noted that the first structural foam 512 in this embodiment, as well as the second structural foam 212, third structural foam 222, fourth structural foam 13, and fifth structural foam mentioned below, can all be products from the prior art. 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.

[0065] Secondly, in this embodiment, as a preferred implementation, the sill beam 5 is made of carbon fiber composite material. Thus, the high stiffness and light weight of carbon fiber composite material can be used to ensure the structural strength of the sill beam 5, which is beneficial to the transmission and absorption of the collision force of the whole vehicle.

[0066] Furthermore, in this embodiment, as a preferred implementation, see [reference needed]. Figures 4 to 7As shown, 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. The second structural foam 212 is embedded with a mounting insert 213, and the mounting insert 213 is provided with a seat mounting point.

[0067] The seat crossbeam 2 is made of a crossbeam frame 211 made of carbon fiber composite material and structural foam located in the crossbeam frame 211. By utilizing the characteristics of low weight, high structural strength and rigidity of carbon fiber composite material and structural foam, the strength of the seat crossbeam 2 can be guaranteed, providing better lateral support for the vehicle floor 1. It also helps to reduce the weight of the seat crossbeam 2 and the vehicle floor 1, thereby facilitating the lightweighting of the whole vehicle.

[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] Still Figure 2 , Figure 3 and Figure 11As shown, in this embodiment, as a preferred implementation, 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. The front seat crossbeam 21a and the rear seat crossbeam 21b are respectively arranged opposite to one of the partitions 51 in the left-right direction of the vehicle.

[0073] The arrangement of two seat crossbeams 2 spaced apart front and rear ensures the reliability of the vehicle seat installation and provides better lateral support, thus improving the rigidity of the floor area. Furthermore, the front seat crossbeam 21a and rear seat crossbeam 21b are each positioned directly opposite one of the partitions 51, facilitating the transfer of collision forces to the seat crossbeams 2 via the partitions 51. This further enhances the force transfer between the sill beam 5 and the seat crossbeams 2, thereby improving the overall vehicle collision safety.

[0074] 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.

[0075] 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.

[0076] In specific implementation, combined with Figures 5 to 7 As shown in the illustration, 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 17 and Figure 20 As shown, the reinforcing beam 22 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. Furthermore, as... Figure 11 As shown, the reinforcing beam 22 and one of the partitions 51 are arranged facing each other in the left-right direction of the vehicle.

[0077] The main advantage of this arrangement is that it can take advantage of the small weight, high structural strength and stiffness of carbon fiber composite materials and structural foam to ensure the structural strength of the reinforcing beam 22. By setting the reinforcing beam 22, the lateral support capacity of the floor position can be further increased, which also helps to increase the overall stiffness of the floor position. Furthermore, the reinforcing beam 22 is also arranged directly opposite one of the partitions 51, which can further improve the collision force transmission capacity between the sill beam 5 and the vehicle floor 1.

[0078] 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 third structure foam 222 as the inner structure.

[0079] In addition, in this embodiment, as a preferred implementation, the vehicle floor 1 is made of carbon fiber composite material and combined with... Figure 8 , Figure 9 , Figure 18 and Figure 19 As shown, it includes a floor upper plate 11 and a floor lower plate 12 connected together. At the same time, each seat crossbeam 2 and a reinforcing beam 22 are provided between the floor upper plate 11 and the floor lower plate 12, and a fourth structural foam 13 is provided between the floor upper plate 11 and the floor lower plate 12. The floor upper plate 11 is provided with perforated holes 113 corresponding to the arrangement of the mounting inserts 213.

[0080] It is understandable that the vehicle body floor 1 consists of upper and lower panels made of carbon fiber composite material and structural foam located between them. The high stiffness and light weight of carbon fiber composite material and structural foam can be used to ensure the stiffness of the vehicle body floor 1, while also improving the lightweight level of the floor. In specific implementation, the upper floor panel 11 and the lower floor panel 12 in this embodiment can be bonded together.

[0081] For specific implementation, please refer to 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.

[0082] In addition, in this embodiment, as a preferred implementation, reference is made to... Figure 2 , Figure 7 and Figure 11As shown, a central channel 10 with an upward bulge is provided in the middle of the vehicle floor 1 in the left-right direction. Seat crossbeams 2 and reinforcing beams 22 are provided on both the left and right sides of the central channel 10. Here, the provision of seat crossbeams 2 and reinforcing beams 22 on both sides of the central channel 10 ensures the overall structural strength of the floor.

[0083] 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.

[0084] 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.

[0085] 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 overall connection and force transmission effect of the vehicle body structure.

[0086] Secondly, in this embodiment, a first protrusion 14 protruding upwards is provided at the top of the rear end of the central channel 10. In the longitudinal direction of the vehicle, the protrusion height of the first protrusion 14 gradually increases in the direction pointing towards the rear panel 4. As a result, it can provide good support for the rear panel 4, and can prevent the rear panel 4 from breaking off and intruding into the passenger compartment in the event of a rear-end collision, thereby improving the safety of the vehicle in a collision.

[0087] 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 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] To improve the structural utilization of the central channel 10, such as Figure 18 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.

[0098] 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.

[0099] 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.

[0100] In this embodiment, the vehicle body structure, by setting a partition 51 in the inner cavity 50 of the sill beam 5 and arranging the seat crossbeam 2 opposite to one of the partitions 51, can not only increase the structural strength of the sill beam 5 by using the partition 51, but also transmit the collision force 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 and the seat crossbeam 2 and helping to improve the collision safety of the whole vehicle.

[0101] Example 2

[0102] This embodiment relates to a vehicle, which has the body structure of Embodiment 1.

[0103] The vehicle in this embodiment, by setting the body structure in Embodiment 1, can increase the collision force transmission effect between the sill beam 5 and the seat crossbeam 2, thereby improving the overall collision performance of the body structure, and thus enhancing the vehicle's collision safety and market competitiveness.

[0104] 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 structure, characterized in that: it comprises rocker beams (5) arranged on left and right sides, and a vehicle body floor (1) located between the rocker beams (5) on the left and right sides; an inner cavity (50) is formed in at least one of the rocker beams (5), and a partition plate (51) is arranged in the inner cavity (50), the partition plate (51) is connected between left and right side walls of the inner cavity (50), and the partition plate (51) is a plurality of partition plates (51) arranged along the front-rear direction of the vehicle; the vehicle body floor (1) is provided with a seat cross beam (2) extending along the left-right direction of the vehicle, and the seat cross beam (2) is arranged opposite to one of the partition plates (51) in the left-right direction of the vehicle.

2. The vehicle body structure according to claim 1, characterized in that: each of the partition plates (51) comprises a first structural foam (512) located in the middle, and outer plates (511) located on the front and rear sides of the first structural foam (512), and the outer plates (511) on both sides are made of carbon fiber composite material.

3. The vehicle body structure according to claim 2, characterized in that: the rocker beam (5) is made of carbon fiber composite material.

4. The vehicle body structure according to any one of claims 1 to 3, characterized in that: 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 a mounting insert (213) is embedded in the second structural foam (212), and the mounting insert (213) is provided with a seat mounting point.

5. The vehicle body structure according to claim 4, characterized in that: the seat cross beam (2) comprises a front seat cross beam (21a) and a rear seat cross beam (21b) arranged along the front-rear direction of the vehicle, and the front seat cross beam (21a) and the rear seat cross beam (21b) are arranged opposite to one of the partition plates (51) in the left-right direction of the vehicle, respectively.

6. The vehicle body structure according to claim 5, 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 third structural foam (222) arranged in the reinforcing beam outer frame (221); and the reinforcing beam (22) is arranged opposite to one of the partition plates (51) in the left-right direction of the vehicle.

7. The vehicle body structure according to claim 6, characterized in that: the vehicle body floor (1) is made of carbon fiber composite material, and comprises a floor upper plate (11) and a floor lower plate (12) connected together; each of the seat cross beams (2) and the reinforcing beam (22) is arranged between the floor upper plate (11) and the floor lower plate (12), a fourth structural foam (13) is arranged between the floor upper plate (11) and the floor lower plate (12), and a hollow hole (113) corresponding to the mounting insert (213) is arranged on the floor upper plate (11). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 8. The vehicle body structure according to claim 7, characterized in that: a center tunnel (10) bulging upward is provided in the middle of the vehicle body floor (1) in the left-right direction, and the seat cross member (2) and the reinforcement beam (22) are provided on both sides of the center tunnel (10).

9. The vehicle body structure according to claim 8, characterized in that: a reinforcement structure (15) is provided on the top of the center tunnel (10), the reinforcement structure (15) is penetrated from the front end of the center tunnel (10) to the rear end of the center tunnel (10), and the top of the rear end of the center tunnel (10) is a slope (141) gradually increasing in the direction pointing to the rear of the vehicle.

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

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