Vehicle body structure and vehicle

Abstract

A vehicle body structure and a vehicle. The vehicle body structure comprises a front engine compartment longitudinal beam (1), a side sill (2) on the same side as the front engine compartment longitudinal beam (1), and a torque box (3) connected between a rear section of the front engine compartment longitudinal beam (1) and a front end of the side sill (2). In the up-down direction of the vehicle, the side sill (2) is located on the side of the front engine compartment longitudinal beam (1) close to the outside of the vehicle, the torque box (3) is inclined rearward in a direction toward the side sill (2), and a rearward inclined guide surface (s) is formed on a front side of the torque box (3). In the event of a collision, the vehicle body structure can guide a front wheel to deflect toward the outside of a passenger compartment during a collision deformation process, so that hard contact between the wheel and the passenger compartment structure during the collision process can be avoided, thereby not only improving the collision safety of the vehicle, but also avoiding the passenger compartment needing to be reinforced by using a large number of parts, so that light weight of the vehicle body is facilitated, and the range of the vehicle is increased, thereby improving the overall quality of the vehicle.

Description

Body structure and vehicle

[0001] This disclosure claims priority to patent application number 202311669775.3 filed with the China Patent Office on December 6, 2023, entitled “Body Structure and Vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of vehicle technology, and more particularly to a vehicle body structure. The present disclosure also relates to a vehicle having the above vehicle body structure. Background Art

[0003] To improve the ability to cope with frontal collisions, especially 25% overlap collisions, traditional car bodies usually choose to use hot-formed steel and stamped sheet metal welded structures for structural reinforcement to improve the body's crash resistance and achieve safety protection for the passengers in the car.

[0004] However, existing vehicle body reinforcement methods have disadvantages such as heavy parts, multiple blocks, and complex structures. At the same time, in order to resist the squeezing of the passenger compartment by the deformation and rearward movement of the front wheels during a collision, additional parts are needed to strengthen the passenger compartment structure, which will undoubtedly further increase the weight and cost of the vehicle body, and will also affect the vehicle's cruising range, which is not conducive to improving the overall quality of the vehicle. Summary of the Invention

[0005] In view of this, the present disclosure aims to propose a vehicle body structure to improve the overall quality of the vehicle.

[0006] To achieve the above objectives, the technical solution of the present disclosure is implemented as follows:

[0007] A vehicle body structure includes a front cabin longitudinal beam, a rocker beam on the same side as the front cabin longitudinal beam, and a torsion box connected between a rear section of the front cabin longitudinal beam and a front end of the rocker beam;

[0008] Viewed from the upper and lower directions of the vehicle, the sill beam is located on the side of the front engine compartment longitudinal beam close to the outside of the vehicle, and the torsion box is tilted rearward in the direction pointing to the sill beam, and a backward-inclined guide surface is formed on the front side of the torsion box.

[0009] Furthermore, the torsion box is connected to a side of the sill beam facing the front cabin longitudinal beam, and the torsion box is provided with a notch for the front end of the sill beam to extend forward;

[0010] The front end surface of the door sill beam is flush with the guide surface, or the front end surface of the door sill beam is located in the notch.

[0011] Furthermore, it also includes the A-pillar and the lower cross member of the front panel;

[0012] The bottom of the A-pillar is connected to the door sill beam, and the end of the front lower cross beam is connected to the A-pillar;

[0013] The rear end of the front cabin longitudinal beam is connected to the front panel lower cross beam, the upper part of the torsion box is connected between the front cabin longitudinal beam and the front panel lower cross beam, and the front cabin longitudinal beam, the front panel lower cross beam and the torsion box are connected to form a triangular structure.

[0014] Furthermore, the front lower cross member is made of extruded aluminum profile;

[0015] The front lower cross member includes a middle section located in the middle and A-pillar connecting sections provided on the left and right sides, and the A-pillar connecting sections on each side are connected to the middle section through a transition section;

[0016] The transition sections on each side are arranged to be inclined downward in the left-right direction of the vehicle and to point outward from the vehicle.

[0017] Furthermore, the middle section and the A-pillar connecting sections on each side may be configured as straight structures extending in the left-right direction of the vehicle;

[0018] The transition sections on each side are arranged as straight structures arranged downwardly.

[0019] Furthermore, it also includes a front subframe rear mounting bracket;

[0020] The rear mounting bracket of the front subframe is connected to the side of the torsion box facing the front cabin longitudinal beam, and a mounting groove is formed between the rear mounting bracket of the front subframe and the torsion box, and the bottom of the rear section of the front cabin longitudinal beam is connected to the mounting groove.

[0021] Furthermore, a longitudinal beam inner support beam is provided on the side of the front nacelle longitudinal beam facing away from the torsion box;

[0022] The longitudinal beam inner support beam is connected between the front cabin longitudinal beam and the front wall lower cross beam, and the front cabin longitudinal beam, the front wall lower cross beam and the longitudinal beam inner support beam are connected to form a triangular structure.

[0023] Furthermore, it also includes a floor front cross member located below and behind the front lower cross member;

[0024] The end of the front floor beam is connected to the A-pillar and is connected to the door sill beam in the left-right direction of the vehicle;

[0025] The rear end of the front sub-frame rear mounting bracket has a protruding portion extending toward the front floor cross member, and the protruding portion is connected to the front floor cross member.

[0026] Furthermore, the A-pillar has an A-pillar lower connecting plate and an A-pillar lower reinforcement located on a side of the A-pillar lower connecting plate close to the outside of the vehicle;

[0027] The rocker beam is sandwiched between the A-pillar lower connecting plate and the A-pillar lower reinforcement, and the A-pillar lower connecting plate and the A-pillar lower reinforcement are both connected to the rocker beam, and the front panel lower cross beam and the floor front cross beam are both connected to the A-pillar lower connecting plate.

[0028] Furthermore, the torsion box, the front lower cross member, the A-pillar lower connecting plate and the A-pillar lower reinforcement are connected together by a connecting member; and / or,

[0029] A lap boss is provided on the lower connecting plate of the A-pillar, and a portion of the end portion of the front cross beam of the floor is lapped on the lap boss.

[0030] Furthermore, the A-pillar lower connecting plate adopts a stepped structure, the lower portion of the A-pillar lower connecting plate overlaps the side and top of the door sill beam respectively, and the upper portion of the A-pillar lower connecting plate overlaps the A-pillar inner plate; and / or,

[0031] The A-pillar lower connecting plate adopts a cast aluminum structure, the overlapping boss is integrally formed when the A-pillar lower connecting plate is prepared, and a reinforcing rib is provided at the bottom of the overlapping boss.

[0032] Furthermore, a front wall lower support beam is connected between the front wall lower cross beam and the floor front cross beam;

[0033] The front wall lower support beam is arranged to be inclined downward in a direction pointing to the front cross beam of the floor, and the front wall lower support beam is connected with the front cabin longitudinal beam in the front-to-back direction of the entire vehicle.

[0034] Furthermore, the rear end of the front cabin longitudinal beam has an extension portion, which is located at the bottom of the front wall lower cross beam and extends toward the front wall lower support beam;

[0035] The rear end of the extension portion is an inclined surface parallel to the front lower support beam, the inclined surface is overlapped on the front lower support beam, and an installation opening is formed between the front lower support beam and the front cabin longitudinal beam, and the bottom of the front lower cross beam is connected to the installation opening.

[0036] Furthermore, at least one of the front cabin longitudinal beam, the door sill beam, the front subframe rear mounting bracket, the front dash lower cross beam and the floor front cross beam is made of aluminum profile;

[0037] And / or, the torsion box adopts a cast aluminum structure;

[0038] And / or, viewed from the up and down direction of the vehicle, the torsion box is a straight-line structure arranged obliquely.

[0039] Compared with the prior art, the present disclosure has the following advantages:

[0040] The vehicle body structure disclosed in the present invention, by tilting the torsion box rearward in the direction pointing to the door sill beam and forming a backward-inclined guide surface on the front side of the torsion box, can guide the front wheels to deflect toward the outside of the passenger compartment during the collision deformation process in the event of a collision, and can avoid hard contact between the wheels and the passenger compartment structure during the collision. This not only helps to improve the collision safety of the entire vehicle, but also avoids the use of a large number of parts to strengthen the passenger compartment, which is conducive to lightweighting of the vehicle body, helps to increase the cruising range of the entire vehicle, and can improve the overall quality of the vehicle.

[0041] In addition, a notch is provided on the torsion box for the sill beam to extend forward. The provision of the notch is beneficial to reducing the weight of the torsion box and can also increase the torsional force transmission capacity between the torsion box and the sill beam. At the same time, the front end face of the sill beam is made coplanar with the guide face, or the front end face of the sill beam is made to be located within the notch. In the event of a head-on collision of the vehicle, the front side of the torsion box can be guaranteed to guide the front wheels, so that the front wheels move outward and prevent the front wheels from intruding into the cockpit.

[0042] The upper portion of the torsion box is connected between the front engine compartment longitudinal beam and the lower front dash cross member, forming a triangular structure. This structure leverages the strength of the triangular structure to increase vehicle body side rigidity and enhance collision force transmission between the torsion box and surrounding components. The provision of a rear mounting bracket on the front subframe facilitates installation of the rear end of the front subframe. The formation of a mounting slot between the rear mounting bracket and the torsion box facilitates connection between the front engine compartment longitudinal beam, the rear mounting bracket, and the torsion box, while also ensuring connection reliability.

[0043] Secondly, by setting an inner support beam of the longitudinal beam and connecting the front cabin longitudinal beam, the front panel lower cross beam and the inner support beam of the longitudinal beam to form a triangular structure, the high strength of the triangular structure can be utilized to increase the connection strength between the front cabin longitudinal beam and the front panel lower cross beam, and improve the collision force transmission performance between the front cabin longitudinal beam and the front panel lower cross beam.

[0044] By connecting the end of the front floor cross beam to the A-pillar and connecting it to the door sill beam, and also providing a protrusion connected to the front floor cross beam on the rear mounting bracket of the front subframe, the stability of the front floor cross beam can be ensured. At the same time, the connection between the front floor cross beam and the rear mounting bracket of the front subframe can also be used to form a force transmission channel between the front cabin longitudinal beam and the front floor cross beam, which helps to transmit and disperse the collision force from the front cabin longitudinal beam to the A-pillars on both sides and the door sill beam position.

[0045] Furthermore, the A-pillar is equipped with an A-pillar lower connecting plate and an A-pillar lower reinforcement, and the rocker beam is sandwiched between the A-pillar lower connecting plate and the A-pillar lower reinforcement. This ensures a secure connection between the A-pillar and the rocker beam, while also facilitating the connection between the front floor cross member and the A-pillar. The torsion box, dash lower cross member, A-pillar lower connecting plate, and A-pillar lower reinforcement are connected together via connectors, ensuring the stability of the dash lower cross member and improving the transmission and dispersion of collision forces on the side of the vehicle body.

[0046] The A-pillar lower connecting plate features an overlap boss for the front floor cross member, facilitating the connection between the front floor cross member and the A-pillar lower connector while ensuring a secure connection. The tilted lower dash support beam, coupled with the front cabin longitudinal beam, further enhances the stability of the front floor cross member and improves the transfer of collision force between the front cabin longitudinal beam and the front floor cross member.

[0047] Furthermore, an extension is provided at the rear end of the front cabin longitudinal beam, with the rear end of the extension forming an inclined surface parallel to the dash lower support beam. This directly connects the front cabin longitudinal beam and dash lower support beam, thereby enhancing collision force transmission between the two beams. A mounting opening is formed between the dash lower support beam and the front cabin longitudinal beam, with the bottom of the dash lower cross beam positioned within the mounting opening. This facilitates connection between the dash lower cross beam and surrounding components, such as the front cabin longitudinal beam and dash lower support beam, while also ensuring a secure connection between the dash lower cross beam, the front cabin longitudinal beam, and the dash lower support beam.

[0048] The front cabin longitudinal beam, door sill beam, front subframe rear mounting bracket, front panel lower cross beam and floor front cross beam are made of aluminum profiles, and the torsion box is made of cast aluminum structure. This can facilitate the preparation of each beam structure, the front subframe rear mounting bracket and the torsion box, and reduce the preparation cost. At the same time, it can also take advantage of the low weight and high strength of aluminum profiles and cast aluminum structures, which is beneficial to the lightweighting of each beam structure, the front subframe rear mounting bracket and the torsion box, ensure the structural strength of each beam structure, the front subframe rear mounting bracket and the torsion box, and help improve the overall performance of the vehicle body structure.

[0049] Another object of the present disclosure is to provide a vehicle having the vehicle body structure as described above.

[0050] The vehicle disclosed in the present invention has the same beneficial effects as the above-mentioned vehicle body structure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings, which constitute part of this disclosure, are used to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are used to explain the disclosure and do not constitute an improper limitation of the disclosure. In the accompanying drawings:

[0052] FIG1 is a schematic diagram of a vehicle body structure according to an embodiment of the present disclosure;

[0053] FIG2 is a schematic diagram of the structure shown in FIG1 from another perspective;

[0054] FIG3 is a schematic diagram of the structure shown in FIG1 from another perspective;

[0055] FIG4 is a top view of FIG1 ;

[0056] FIG5 is a schematic diagram of the connection between the torsion box and the peripheral components according to an embodiment of the present disclosure;

[0057] FIG6 is a schematic structural diagram of a torsion box according to an embodiment of the present disclosure;

[0058] FIG7 is a schematic structural diagram of a front wall lower cross member according to an embodiment of the present disclosure;

[0059] FIG8 is a schematic diagram of the front lower cross member according to an embodiment of the present disclosure from another perspective;

[0060] FIG9 is a schematic diagram of the structure of the mounting slot according to an embodiment of the present disclosure;

[0061] FIG10 is a schematic structural diagram of the rear mounting bracket of the front subframe according to an embodiment of the present disclosure;

[0062] FIG11 is an enlarged schematic diagram of a part of the structure shown in FIG3 ;

[0063] FIG12 is a schematic diagram of the structure of the A-pillar according to an embodiment of the present disclosure;

[0064] FIG13 is a schematic diagram of the structure shown in FIG12 from another perspective;

[0065] FIG14 is a schematic structural diagram of a front nacelle longitudinal beam according to an embodiment of the present disclosure;

[0066] FIG15 is a schematic diagram of the coordination between the front cabin longitudinal beam and the front wall lower support beam according to an embodiment of the present disclosure;

[0067] Description of reference numerals:

[0068] 1. Front cabin longitudinal beam; 2. Door sill beam; 3. Torque box; 4. A-pillar; 5. Front dash lower cross member; 6. Longitudinal beam inner support beam; 7. Front subframe rear mounting bracket; 8. Floor front cross member; 9. Front dash lower support beam; 10. First bolt; 11. Second bolt; 12. Third bolt; 13. Fourth bolt; 14. Fifth bolt.

[0069] 1a, extension; 301, notch; 302, cavity; 303, reinforcing rib; 3031, transverse rib; 3032, vertical rib; 3a, upper connecting hole; 3b, lower connecting hole; 3c, door sill connecting hole; 401, A-pillar lower connecting plate; 402, A-pillar lower reinforcement; 403, overlapping boss; 4a, connecting hole; 501, middle section; 502, A-pillar connecting section; 503, transition section; 504, A-pillar connecting hole; 505, lower crossbeam connecting hole; 7a, protrusion; 7b, notch; 7c, bracket connecting hole;

[0070] s, guide surface; t, front end surface; w, inclined surface; k, installation opening; g, installation groove; M, bottom removal area; N, top removal area. DETAILED DESCRIPTION

[0071] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0072] In the description of this disclosure, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this disclosure and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0073] Furthermore, in the description of this disclosure, unless otherwise explicitly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, these terms can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in this disclosure based on the specific circumstances.

[0074] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Example 1

[0075] The present embodiment relates to a vehicle body structure. As shown in Figures 1 to 4 , the overall structure includes a front cabin longitudinal beam 1, a door sill beam 2 on the same side as the front cabin longitudinal beam 1, and a torsion box 3 connected between the rear section of the front cabin longitudinal beam 1 and the front end of the door sill beam 2.

[0076] Among them, from the up and down direction of the whole vehicle, the door sill beam 2 is located on the side of the front engine compartment longitudinal beam 1 close to the outside of the vehicle, and the torsion box 3 is tilted backward in the direction pointing to the door sill beam 2, and a backward-inclined guide surface s is formed on the front side of the torsion box 3.

[0077] At this time, as set above, by tilting the torsion box 3 backward in the direction of the door sill beam 2 and forming a backward-inclined guide surface s on the front side of the torsion box 3, this embodiment can guide the front wheels to deflect toward the outside of the passenger compartment during the collision deformation process when a collision occurs, and can avoid hard contact between the wheels and the passenger compartment structure during the collision. This can not only improve the collision safety of the entire vehicle, but also avoid the use of a large number of parts to strengthen the passenger compartment, and can achieve the effect of lightweighting the vehicle body and helping to increase the cruising range of the entire vehicle.

[0078] Based on the above overall introduction, as still shown in FIG4 , viewed from the upper and lower directions of the vehicle, the torsion box 3 of this embodiment is also an inclined linear structure, and as further shown in FIG5 and FIG6 , the torsion box 3 of this embodiment is specifically connected to the side of the sill beam 2 facing the front cabin longitudinal beam 1, and a notch 301 is provided on the torsion box 3 for the front end of the sill beam 2 to extend forward. At the same time, the front end surface t of the sill beam 2 is also flush with the guide surface s.

[0079] At this point, by providing a notch 301 in the torque box 3 for the sill beam 2 to extend forward, it can be understood that the provision of the notch 301 helps reduce the weight of the torque box 3 and also increases the torsional force transmission capacity between the torque box 3 and the sill beam 2. At the same time, the front end surface t of the sill beam 2 is made coplanar with the guide surface s on the front side of the torque box 3. This also ensures that the front side of the torque box 3 guides the front wheels in the event of a head-on collision, allowing the front wheels to move outward and prevent them from intruding into the cockpit.

[0080] It is worth noting that, based on the setting of the notch 301 on the torsion box 3, in addition to positioning the front end surface t of the rocker beam 2 within the notch 301, in a specific implementation, positioning the front end surface t of the rocker beam 2 within the notch 301 can also ensure that the front side of the torsion box 3 guides the front wheels in the event of a head-on collision, thereby enabling the front wheels to move outward.

[0081] In this embodiment, as still shown in FIG6 , as a preferred implementation form, the torsion box 3 may, for example, adopt a cast aluminum structure. This makes the torsion box 3 adopt a cast aluminum structure, which facilitates the preparation of the torsion box and reduces the preparation cost. At the same time, it can also take advantage of the low weight and high strength of the cast aluminum structure, which is conducive to lightweighting the torsion box and ensuring the structural strength of the torsion box.

[0082] Furthermore, based on the casting molding of the torsion box 3, in terms of specific structure, in addition to the notch 301, a cavity 302 may be provided on the torsion box 3, and a reinforcing rib 303 may be provided in the cavity 302. The reinforcing rib 303 may, for example, include transverse ribs 3031 arranged along the left-right direction of the vehicle, and vertical ribs 3032 arranged along the up-down direction of the vehicle. The transverse ribs 3031 may preferably be arranged in a plurality at intervals, and the vertical ribs 3032 may be interwoven with at least some of the transverse ribs 3031.

[0083] It can be understood that, while adopting a cast aluminum structure, by further forming a cavity 302 on the torsion box 3 and arranging a reinforcing rib 303 including a transverse rib 3031 and a vertical rib 3032 in the cavity 302, it can further contribute to the lightweighting of the torsion box 3, while also ensuring the structural strength of the torsion box 3. Moreover, in particular, by utilizing a plurality of transverse ribs 3031 arranged at intervals, each transverse rib 3031 can also form a transverse (left and right direction of the entire vehicle) force transmission channel in the torsion box 3, so as to ensure the collision force transmission effect of the torsion box 3 between the front cabin longitudinal beam 1, the door sill beam 2 and the A-pillar 4.

[0084] In this embodiment, still referring to Figure 6, an upper connecting hole 3a and a threshold connecting hole 3c located in the notch 301 are provided on the torque box 3, and in a specific implementation, the torque box 3 can be connected to the front cabin longitudinal beam 1 by a fourth bolt 13 passing through the upper connecting hole 3a. At the same time, the torque box 3 can also be connected to the threshold beam 2 by a bolt structure connected to the threshold connecting hole 3c.

[0085] Still referring to Figures 1 to 4 , and in combination with Figures 7 and 8 , the vehicle body structure of this embodiment further includes an A-pillar 4 and a front lower cross beam 5 , and the bottom of the A-pillar 4 is connected to the door sill beam 2 , and the end of the front lower cross beam 5 is connected to the A-pillar 4 . At the same time, the rear end of the front cabin longitudinal beam 1 is connected to the front lower cross beam 5 , and the upper part of the torsion box 3 is also connected between the front cabin longitudinal beam 1 and the front lower cross beam 5 , and the front cabin longitudinal beam 1 , the front lower cross beam 5 and the torsion box 3 are connected to form a triangular structure.

[0086] At this time, by connecting the upper part of the torsion box 3 between the front cabin longitudinal beam 1 and the front panel lower cross beam 5, and connecting the front cabin longitudinal beam 1, the front panel lower cross beam 5 and the torsion box 3 to form a triangular structure, it can be understood that it can utilize the high strength of the triangular structure to increase the side stiffness of the vehicle body and enhance the collision force transmission effect between the torsion box 3 and the surrounding parts, which is beneficial to the transmission and dispersion of the collision force between the front cabin longitudinal beam 1, the torsion box 3 and the front panel lower cross beam 5.

[0087] Furthermore, as a preferred embodiment, the dash lower cross member 5 can be made of, for example, an extruded aluminum profile. Structurally, it also includes a central section 501 and two A-pillar connecting sections 502 on either side. Each A-pillar connecting section 502 is connected to the central section 501 via a transition section 503. Furthermore, each transition section 503 is angled downward in the left-right direction of the vehicle, pointing outward. Each A-pillar connecting section 502 is provided with an A-pillar connecting hole 504 for connecting to the A-pillar 4 on the same side.

[0088] In this way, by making the front panel lower cross beam 5 adopt extruded aluminum profiles and making the transition section 503 inclined downward in the direction pointing to the outside of the vehicle, it can not only utilize the characteristics of light weight and high structural strength of the extruded aluminum profile to reduce the weight of the front panel lower cross beam 5, and increase the stiffness and collision force transmission ability of the front panel lower cross beam 5, but also, it can also make the connection point between the front panel lower cross beam 5 and the A-pillar 4 close to the root position of the A-pillar 4, which can avoid excessive force on the upper part of the A-pillar 4 during a vehicle collision, causing the root of the A-pillar 4 to rotate and deform due to excessive torque, resulting in failure of the connection at the root of the A-pillar 4, thereby ensuring the continuity of the force transmission channel between the A-pillar 4 and the surrounding parts, and helping to improve the collision safety of the vehicle.

[0089] In this embodiment, based on the structural design of the dash lower cross member 5, as a preferred embodiment, as shown in Figures 7 and 8, the intermediate section 501 and each side A-pillar connecting section 502 can be configured as a straight structure extending in the left-right direction of the vehicle. This makes the intermediate section 501 and the A-pillar connecting sections 502 both straight, which not only facilitates the preparation and molding of the dash lower cross member 5 but also improves its lateral (left-right) force transmission performance.

[0090] While the middle section 501 and the A-pillar connecting sections 502 are preferably straight structures, as a preferred embodiment, the transition sections 503 on each side of the front lower cross member 5 can also be configured as straight structures with a downward inclination. In this case, it can be understood that the transition sections 503 are straight structures with a downward inclination, which can also facilitate the shaping of the transition sections 503 and improve the force transmission effect of the transition sections 503 between the middle section 501 and the A-pillar connecting sections 502.

[0091] In the present embodiment, it is worth noting that, based on the fact that the front panel lower cross beam 5 is made of extruded aluminum profiles, still referring to FIG8 , during its preparation, for example, a further machining process can be adopted after extrusion molding to remove the bottom removal area M at the bottom of the front panel lower cross beam 5 and the top removal areas N at both ends of the top of the front panel lower cross beam 5. In this way, the middle section 501 in the front panel lower cross beam 5 and the transition sections 503 and the A-pillar connecting section 502 on each side can be formed, and the setting requirements of the A-pillar connecting section 502 and the transition section 503 can be met.

[0092] Still referring to Figures 1 to 4 , and continuing in conjunction with Figures 9 and 10 , the vehicle body structure of this embodiment further includes a front subframe rear mounting bracket 7 , which is connected to the side of the torsion box 3 facing the front cabin longitudinal beam 1 , and a mounting groove g is also formed between the front subframe rear mounting bracket 7 and the torsion box 3 , and the bottom of the rear section of the front cabin longitudinal beam 1 is connected to the mounting groove g.

[0093] At this time, the arrangement of the front subframe rear mounting bracket 7 facilitates the installation of the rear end of the front subframe, and forms a mounting groove g between the front subframe rear mounting bracket 7 and the torque box 3, thereby facilitating the connection between the front cabin longitudinal beam 1 and the front subframe rear mounting bracket 7 and the torque box 3, and ensuring the reliability of the connection therebetween.

[0094] In a specific implementation, still referring to FIG. 10 , the front sub-frame rear mounting bracket 7 may also be made of, for example, an aluminum profile. It is understandable that the use of the aluminum profile facilitates the preparation of the front sub-frame rear mounting bracket 7 and reduces its preparation cost. Furthermore, the aluminum profile can also utilize its low weight and high strength to facilitate lightweighting of the front sub-frame rear mounting bracket 7 and ensure the structural strength of the front sub-frame rear mounting bracket 7.

[0095] It should be noted that when fabricating the front subframe rear mounting bracket 7 from aluminum profiles, for example, a recess 7b can be formed on one side of the top of the front subframe rear mounting bracket 7. When the torque box 3 and the front subframe rear mounting bracket 7 are connected, this recess 7b also forms the aforementioned mounting groove g, which is used to accommodate the bottom of the rear section of the front nacelle longitudinal beam 1. Furthermore, in this embodiment, a bracket connection hole 7c can be provided on the side of the front subframe rear mounting bracket 7 facing the torque box 3. This bracket connection hole 7c can be, for example, a threaded connection hole. Correspondingly, a lower connection hole 3b can be provided on the torque box 3 to engage with the fifth bolt 14, thereby achieving connection between the torque box 3 and the front subframe rear mounting bracket 7.

[0096] In this embodiment, as shown in Figures 2 and 9 , as a preferred implementation, a longitudinal beam inner support beam 6 is also provided on the side of the front cabin longitudinal beam 1 facing away from the torsion box 3. The longitudinal beam inner support beam 6 is connected between the front cabin longitudinal beam 1 and the front panel lower cross beam 5. The front cabin longitudinal beam 1, the front panel lower cross beam 5, and the longitudinal beam inner support beam 6 are also connected to form a triangular structure.

[0097] It can be understood that by providing the above-mentioned longitudinal beam inner support beam 6 and connecting the front cabin longitudinal beam 1, the front panel lower cross beam 5 and the longitudinal beam inner support beam 6 to form a triangular structure, it is also possible to utilize the high strength of the triangular structure to increase the connection strength between the front cabin longitudinal beam 1 and the front panel lower cross beam 5, and improve the collision force transmission performance between the front cabin longitudinal beam 1 and the front panel lower cross beam 5, thereby helping to improve the collision safety of the entire vehicle.

[0098] Continuing with Figures 1 to 4 and in conjunction with Figure 11 , the vehicle body structure of this embodiment further includes a front floor cross member 8 located below and behind the dash lower cross member 5. The end of this front floor cross member 8 is connected to the A-pillar 4 and is arranged to engage with the sill beam 2 in the left-right direction of the vehicle. Furthermore, as a preferred embodiment, and still referring to Figure 10 , a protrusion 7 a extending toward the front floor cross member 8 is provided at the rear end of the front subframe rear mounting bracket 7 of this embodiment. This protrusion 7 a is connected to the front floor cross member 8.

[0099] At this point, it should be noted that the connection between the front floor cross member 8 and the sill beam 2, i.e., their projections in the left-right direction of the vehicle at least partially overlap, is configured so that the ends of the front floor cross member 8 are connected to the A-pillar 4 and connected to the sill beam 2, and the protrusion 7a provided on the front subframe rear mounting bracket 7 for connection to the front floor cross member 8, not only ensures the stability of the front floor cross member 8, but also utilizes the connection between the front floor cross member 8 and the front subframe rear mounting bracket 7 to form a force transmission channel between the front engine compartment longitudinal beam 1 and the front floor cross member 8, thereby facilitating the transmission and distribution of collision forces from the front engine compartment longitudinal beam 1 to the A-pillars 4 and the sill beam 2 on both sides.

[0100] Continuing with Figures 12 and 13 , the A-pillar 4 of this embodiment can employ a conventional structure consisting of an A-pillar inner panel and an A-pillar reinforcement panel that are snap-fitted together. To better illustrate the A-pillar lower connecting plate 401 and A-pillar lower reinforcement 402 described below, these panels are omitted from the figures. Of course, in practice, the A-pillar inner panel and A-pillar reinforcement panel can be configured in conventional configurations.

[0101] In this preferred embodiment, as described above, the A-pillar 4 includes an A-pillar lower connecting plate 401 and an A-pillar lower reinforcement 402 located on the vehicle exterior side of the A-pillar lower connecting plate 401. As shown in FIG13 , the rocker beam 2 is sandwiched between the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402. Both the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402 are also connected to the rocker beam 2. The front panel lower cross member 5 and the floor front cross member 8 are both connected to the A-pillar lower connecting plate 401.

[0102] In a specific implementation, the A-pillar lower connecting plate 401 may, for example, have a stepped structure as shown in Figure 12 , with its lower portion overlapping the side and top portions of the rocker beam 2, and its upper portion overlapping the A-pillar inner panel (not shown). Furthermore, the A-pillar lower reinforcement 402 is typically positioned between the interlocking A-pillar inner panel and the A-pillar reinforcement plate. The A-pillar lower connecting plate 401 and the rocker beam 2 may be connected, for example, by rivets, while the A-pillar lower reinforcement 402 and the rocker beam 2 may be connected by bolts.

[0103] In this embodiment, the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402 are provided in the A-pillar 4, and the rocker beam 2 is sandwiched between the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402. Obviously, this can ensure the connection effect between the A-pillar 4 and the rocker beam 2, and can also facilitate the connection between the front floor cross member 8 and the A-pillar 4.

[0104] Furthermore, as a preferred embodiment, this embodiment can also connect the torsion box 3, the front lower cross member 5, the A-pillar lower connecting plate 401, and the A-pillar lower reinforcement 402 together via connectors. Thus, by connecting the torsion box 3, the front lower cross member 5, the A-pillar lower connecting plate 401, and the A-pillar lower reinforcement 402 together via connectors, the stability of the front lower cross member 5 can be ensured, while also improving the transmission and dispersion of collision forces on the side of the vehicle body.

[0105] In the specific implementation, still referring to Figures 5 and 13, the above-mentioned connecting member can be, for example, a second bolt 11, and a connecting through-hole 4a can be provided on the lower connecting plate 401 of the A-pillar. After the second bolt 11 passes through the torsion box 3, the lower cross beam 5 and the connecting through-hole 4a, it can be screwed to the lower reinforcement 402 of the A-pillar.

[0106] In addition, in addition to achieving the connection between the torsion box 3, the front lower cross beam 5 and the A-pillar 4 through the above-mentioned second bolt 11, of course, as shown in Figure 5, during specific implementation, this embodiment can also connect the front lower cross beam 5 and the A-pillar 4 together through the first bolt 10, and connect the torsion box 3 and the front lower cross beam 5 together through the third bolt 12 that cooperates with the lower cross beam connecting hole 505 on the front lower cross beam 5.

[0107] The connection of these bolts ensures a reliable connection between the torque box 3, the front lower cross member 5, the A-pillar 4, and even the front cabin longitudinal beam 1 and the front subframe rear mounting bracket 7, thereby meeting the rigidity requirements of the vehicle body structure. It should also be noted that the location and number of these bolts can be selected based on specific design requirements.

[0108] In this embodiment, as shown in Figures 11 and 12 , as a preferred implementation, an overlapping boss 403 is also provided on the A-pillar lower connecting plate 401, and a portion of the end of the front floor cross member 8 overlaps the overlapping boss 403. The provision of the overlapping boss 403 on the A-pillar lower connecting plate 401 for the front floor cross member 8 to overlap facilitates the connection between the front floor cross member 8 and the A-pillar lower connecting member 401, while also ensuring a reliable connection between the two.

[0109] In practice, the A-pillar lower connecting plate 401 can also be constructed of cast aluminum, for example, and the lap boss 403 can be integrally formed during the manufacture of the A-pillar lower connecting plate 401. Furthermore, to ensure the stability of the lap boss 403, a reinforcing rib can be provided at its base. Furthermore, the connection between the end of the front floor beam 8 and the lap boss 403, as well as between the remaining portion of the end of the front floor beam 8 and the A-pillar lower connecting plate 401, can generally be welded.

[0110] In this embodiment, as shown in Figures 3, 4, and 11, as a preferred implementation, a dash lower support beam 9 is also connected between the dash lower cross member 5 and the floor front cross member 8. The dash lower support beam 9 is arranged downwardly inclined toward the floor front cross member 8, and is also connected to the front cabin longitudinal beam 1 in the vehicle front-to-back direction.

[0111] At this point, the connection between the front dash lower support beam 9 and the front cabin longitudinal beam 1 is such that their projections in the vehicle's fore-aft direction at least partially overlap. Furthermore, it is understood that by providing the inclined front dash lower support beam 9 and connecting it with the front cabin longitudinal beam 1, the stability of the front floor cross member 8 can be further enhanced. This also further improves the transmission of collision force between the front cabin longitudinal beam 1 and the front floor cross member 8, thereby increasing the safety of the vehicle in a collision.

[0112] Continuing with Figures 14 and 15 , as a preferred embodiment, in addition to the dash lower support beam 9, this embodiment also includes an extension 1a at the bottom of the rear end of the front cabin longitudinal beam 1. This extension 1a is located at the bottom of the dash lower cross member 5 and extends toward the dash lower support beam 9. Furthermore, the rear end of the extension 1a forms an inclined surface w parallel to the dash lower support beam 9, which overlaps the dash lower support beam 9.

[0113] Therefore, by providing an extension portion 1a at the rear end of the front cabin longitudinal beam 1 and making the rear end of the extension portion 1a an inclined surface w that is parallel to and overlaps with the front lower support beam 9, it can be understood that it can better increase the collision force transmission performance between the front cabin longitudinal beam 1 and the front lower support beam 9 through the direct connection between the two.

[0114] In this embodiment, in addition to the aforementioned extension 1a, a mounting opening k is further formed between the front lower support beam 9 and the rear end of the front cabin longitudinal beam 1, and the bottom of the front lower cross beam 5 is connected to this mounting opening k. The mounting opening k formed between the front lower support beam 9 and the front cabin longitudinal beam 1, with the bottom of the front lower cross beam 5 positioned within the mounting opening k, significantly facilitates the connection between the front lower cross beam 5 and surrounding components, such as the front cabin longitudinal beam 1 and the front lower support beam 9, while also ensuring a secure connection between the front lower cross beam 5, the front cabin longitudinal beam 1, and the front lower support beam 9.

[0115] In a specific implementation, the front dash lower support beam 9 and the floor front cross member 8, as well as the front dash lower support beam 9 and the front dash lower cross member 5, can be connected by welding. Furthermore, as a preferred embodiment, the front dash lower support beam 9 and the longitudinal inner support beam 6 can also be made of aluminum profiles, for example. In addition to welding, the longitudinal inner support beam 6 can also be connected to the front cabin longitudinal beam 1 and the front dash lower cross member 5 using rivets.

[0116] In this embodiment, as a preferred implementation, one, more, or all of the front cabin longitudinal beam 1, the sill beam 2, the front dash lower cross beam 5, and the floor front cross beam 8 may also be made of aluminum profiles. This facilitates the fabrication of the beam structures, reducing their cost, while also leveraging the low weight and high strength of aluminum profiles to reduce the weight of the beam structures, maintain their structural strength, and ultimately improve the overall performance of the vehicle body.

[0117] The vehicle body structure of this embodiment adopts the above structure. By tilting the torsion box 3 rearward in the direction pointing to the door sill beam 2 and forming a backward-inclined guide surface s on the front side of the torsion box 3, the front wheels can be guided to deflect toward the outside of the passenger compartment during the collision deformation process in the event of a collision, so as to avoid hard contact between the wheels and the passenger compartment structure during the collision. In this way, the strategy of using softness to overcome hardness can be adopted to resolve the transmission of the collision to the passenger compartment, and the damage to the driver and passengers caused by excessive acceleration caused by "hard collisions" can be avoided. It not only helps to improve the collision safety of the entire vehicle, but also avoids the use of a large number of parts to strengthen the passenger compartment, which is conducive to lightweighting of the vehicle body and helps to increase the cruising range of the entire vehicle, and has good practicality. Example 2

[0118] This embodiment relates to a vehicle having the vehicle body structure in the first embodiment.

[0119] The vehicle of this embodiment is provided with the body structure of the first embodiment, which helps to improve the collision safety of the entire vehicle, and can also avoid the passenger compartment from being reinforced with a large number of parts, which is conducive to lightweighting the body, helps to increase the cruising range of the entire vehicle, and has good practicality.

[0120] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A vehicle body structure, characterized in that: It comprises a front cabin longitudinal beam (1), a threshold beam (2) on the same side as the front cabin longitudinal beam (1), and a torsion box (3) connected between the rear section of the front cabin longitudinal beam (1) and the front end of the threshold beam (2); When viewed from the upper and lower directions of the vehicle, the threshold beam (2) is located on a side of the front engine compartment longitudinal beam (1) close to the outside of the vehicle, and the torque box (3) is arranged to be tilted backward in a direction pointing to the threshold beam (2), and a backward tilted guide surface (s) is formed on the front side of the torque box (3).

2. The vehicle body structure according to claim 1, characterized in that: The torsion box (3) is connected to a side of the threshold beam (2) facing the front cabin longitudinal beam (1), and the torsion box (3) is provided with a notch (301) for the front end of the threshold beam (2) to extend forward; The front end surface (t) of the threshold beam (2) is flush with the guide surface (s), or the front end surface (t) of the threshold beam (2) is located in the notch (301).

3. The vehicle body structure according to claim 1, characterized in that: It also includes an A-pillar (4) and a front lower crossbeam (5); The bottom of the A-pillar (4) is connected to the door sill beam (2), and the end of the front lower cross beam (5) is connected to the A-pillar (4); The rear end of the front cabin longitudinal beam (1) is connected to the front enclosure lower cross beam (5), the upper part of the torque box (3) is connected between the front cabin longitudinal beam (1) and the front enclosure lower cross beam (5), and the front cabin longitudinal beam (1), the front enclosure lower cross beam (5) and the torque box (3) are connected to form a triangular structure.

4. The vehicle body structure according to claim 3, characterized in that: The front enclosure lower cross beam (5) is made of extruded aluminum profile; The front wall lower cross beam (5) comprises a middle section (501) located in the middle, and A-pillar connecting sections (502) arranged on the left and right sides, and the A-pillar connecting sections (502) on each side are connected to the middle section (501) via a transition section (503); The transition sections (503) on each side are arranged to be inclined downward in the left-right direction of the entire vehicle and in the direction pointing outward from the vehicle.

5. The vehicle body structure according to claim 4, characterized in that: The middle section (501) and the A-pillar connecting sections (502) on each side may be configured as straight structures extending in the left-right direction of the vehicle; The transition sections (503) on each side are arranged as a straight structure arranged downwardly.

6. The vehicle body structure according to claim 3, characterized in that: Also included is a front subframe rear mounting bracket (7); The front sub-frame rear mounting bracket (7) is connected to a side of the torsion box (3) facing the front cabin longitudinal beam (1), and a mounting groove (g) is formed between the front sub-frame rear mounting bracket (7) and the torsion box (3), and the bottom of the rear section of the front cabin longitudinal beam (1) is connected to the mounting groove (g).

7. The vehicle body structure according to claim 6, characterized in that: A longitudinal beam inner support beam (6) is provided on a side of the front cabin longitudinal beam (1) facing away from the torsion box (3); The longitudinal beam inner support beam (6) is connected between the front cabin longitudinal beam (1) and the front enclosure lower cross beam (5), and the front cabin longitudinal beam (1), the front enclosure lower cross beam (5) and the longitudinal beam inner support beam (6) are connected to form a triangular structure.

8. The vehicle body structure according to claim 6, characterized in that: It also includes a floor front cross beam (8) located at the lower rear of the front enclosure lower cross beam (5); The end of the front floor beam (8) is connected to the A-pillar (4) and is arranged in connection with the door sill beam (2) in the left-right direction of the vehicle; The rear end of the front subframe rear mounting bracket (7) has a protruding portion (7a) extending toward the front floor cross beam (8), and the protruding portion (7a) is connected to the front floor cross beam (8).

9. The vehicle body structure according to claim 8, characterized in that: The A-pillar (4) comprises an A-pillar lower connecting plate (401), and an A-pillar lower reinforcing member (402) located on a side of the A-pillar lower connecting plate (401) close to the outside of the vehicle; The threshold beam (2) is sandwiched between the A-pillar lower connecting plate (401) and the A-pillar lower reinforcement (402), and the A-pillar lower connecting plate (401) and the A-pillar lower reinforcement (402) are both connected to the threshold beam (2), and the front enclosure lower cross beam (5) and the floor front cross beam (8) are both connected to the A-pillar lower connecting plate (401).

10. The vehicle body structure according to claim 9, characterized in that: The torsion box (3), the front wall lower cross beam (5), the A-pillar lower connecting plate (401) and the A-pillar lower reinforcement (402) are connected together via a connecting piece; and / or, The A-pillar lower connecting plate (401) is provided with an overlapping boss (403), and a portion of the end of the floor front cross beam (8) is overlapped on the overlapping boss (403).

11. The vehicle body structure according to claim 9, characterized in that: The A-pillar lower connecting plate (401) adopts a stepped structure, the lower portion of the A-pillar lower connecting plate (401) overlaps the side portion and the top portion of the door sill beam (2), respectively, and the upper portion of the A-pillar lower connecting plate (401) overlaps the A-pillar inner plate; and / or, The A-pillar lower connecting plate (401) adopts a cast aluminum structure, the overlapping boss (403) is integrally formed when the A-pillar lower connecting plate (401) is prepared, and a reinforcing rib is provided at the bottom of the overlapping boss (403).

12. The vehicle body structure according to claim 8, characterized in that: A front wall lower support beam (9) is connected between the front wall lower cross beam (5) and the floor front cross beam (8); The front enclosure lower support beam (9) is arranged to be inclined downward in a direction pointing toward the floor front cross beam (8), and the front enclosure lower support beam (9) is arranged to be connected with the front cabin longitudinal beam (1) in the front-rear direction of the entire vehicle.

13. The vehicle body structure according to claim 12, characterized in that: The rear end of the front cabin longitudinal beam (1) has an extension portion (1a), the extension portion (1a) is located at the bottom of the front enclosure lower cross beam (5) and extends towards the front enclosure lower support beam (9); The rear end of the extension portion (1a) is an inclined surface (w) parallel to the front panel lower support beam (9), the inclined surface (w) is overlapped on the front panel lower support beam (9), and a mounting opening (k) is formed between the front panel lower support beam (9) and the front cabin longitudinal beam (1), and the bottom of the front panel lower cross beam (5) is connected to the mounting opening (k).

14. The vehicle body structure according to any one of claims 8 to 13, characterized in that: At least one of the front cabin longitudinal beam (1), the door sill beam (2), the front subframe rear mounting bracket (7), the front enclosure lower cross beam (5) and the floor front cross beam (8) is made of aluminum profile; And / or, the torque box (3) adopts a cast aluminum structure; And / or, viewed from the upper and lower directions of the entire vehicle, the torque box (3) is a straight-line structure arranged obliquely.

15. A vehicle, characterized in that: The vehicle has the vehicle body structure according to any one of claims 1 to 14.

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