Vehicle body structure and vehicle

Abstract

The invention provides a vehicle body structure and a vehicle. The vehicle body structure comprises a front cabin longitudinal beam, a doorsill beam on the same side as the front cabin longitudinal beam, and a torsion box connected between the rear section of the front cabin longitudinal beam and the front end of the doorsill beam. From the vertical direction of the whole vehicle, the doorsill beam is located on the side, close to the outside of the vehicle, of the front cabin longitudinal beam, the torsion box is obliquely arranged backwards in the direction pointing to the doorsill beam, and a guide face inclining backwards is formed on the front side of the torsion box. According to the vehicle body structure, when collision occurs, the front wheels can be guided to deflect towards the outer side of the passenger compartment in the collision deformation process, and hard contact between the wheels and the passenger compartment structure in the collision process can be avoided, so that the collision safety of the whole vehicle is improved, the situation that the passenger compartment is reinforced by adopting a large number of parts can be avoided, and the cost is reduced. Lightening of a vehicle body is facilitated, the endurance mileage of the whole vehicle is increased, and the overall quality of the vehicle can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a vehicle body structure. The present invention also relates to a vehicle having the above vehicle body structure. Background Art

[0002] In order 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 welding structures to strengthen the structure, so as to improve the collision resistance of the car body and achieve safety protection for the occupants in the car.

[0003] However, the existing body reinforcement methods have disadvantages such as heavy parts, many blocks, and complex structure. 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 body weight and cost, 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

[0004] In view of this, the present invention aims to provide a vehicle body structure to improve the overall quality of the vehicle.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A vehicle body structure includes a front cabin longitudinal beam, a sill 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 sill beam;

[0007] Viewed from the upper and lower directions of the vehicle, the threshold 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 backward in the direction pointing to the threshold beam, and a backward-inclined guide surface is formed on the front side of the torsion box.

[0008] Further, the torsion box is connected to a side of the threshold beam facing the front cabin longitudinal beam, and the torsion box is provided with a notch for the front end of the threshold beam to extend forward;

[0009] The front end surface of the threshold beam is flush with the guide surface, or the front end surface of the threshold beam is located in the notch.

[0010] Further, it also includes the A-pillar and the lower cross member of the front wall;

[0011] The bottom of the A-pillar is connected to the door sill beam, and the end of the front wall lower cross beam is connected to the A-pillar;

[0012] The rear end of the front cabin longitudinal beam is connected to the front enclosure lower cross beam, the upper part of the torsion box is connected between the front cabin longitudinal beam and the front enclosure lower cross beam, and the front cabin longitudinal beam, the front enclosure lower cross beam and the torsion box are connected to form a triangular structure.

[0013] Further, it also includes a front subframe rear mounting bracket;

[0014] The front subframe rear mounting bracket is connected to a side of the torsion box facing the front cabin longitudinal beam, and a mounting groove is formed between the front subframe rear mounting bracket and the torsion box, and the bottom of the rear section of the front cabin longitudinal beam is connected to the mounting groove.

[0015] Furthermore, a longitudinal beam inner support beam is provided on the side of the front cabin longitudinal beam facing away from the torsion box;

[0016] The longitudinal beam inner support beam is connected between the front cabin longitudinal beam and the front enclosure lower cross beam, and the front cabin longitudinal beam, the front enclosure lower cross beam and the longitudinal beam inner support beam are connected to form a triangular structure.

[0017] Furthermore, it also includes a floor front crossbeam located at the rear and lower part of the front enclosure lower crossbeam;

[0018] 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;

[0019] The rear end of the front sub-frame rear mounting bracket has a protruding portion extending toward the front floor cross beam, and the protruding portion is connected to the front floor cross beam.

[0020] Furthermore, the A-pillar has an A-pillar lower connecting plate, and an A-pillar lower reinforcement member located on a side of the A-pillar lower connecting plate close to the outside of the vehicle;

[0021] The threshold 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 threshold beam, and the front wall lower cross beam and the floor front cross beam are both connected to the A-pillar lower connecting plate.

[0022] Further, the torsion box, the lower cross beam of the front wall, the lower connecting plate of the A-pillar and the lower reinforcement of the A-pillar are connected together by a connecting piece; and / or,

[0023] A lap boss is provided on the A-pillar lower connecting plate, and a portion of the end of the front cross beam of the floor is lapped on the lap boss.

[0024] Furthermore, a front wall lower support beam is connected between the front wall lower cross beam and the floor front cross beam;

[0025] The front wall lower support beam is arranged to be inclined downward in the 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-rear direction of the whole vehicle.

[0026] Furthermore, the rear end of the front cabin longitudinal beam has an extension portion, the extension portion is located at the bottom of the front wall lower cross beam and extends toward the front wall lower support beam;

[0027] The rear end of the extension portion is an inclined surface parallel to the lower support beam of the front enclosure, the inclined surface is overlapped on the lower support beam of the front enclosure, and an installation opening is formed between the lower support beam of the front enclosure and the front cabin longitudinal beam, and the bottom of the lower cross beam of the front enclosure is connected to the installation opening.

[0028] Further, at least one of the front cabin longitudinal beam, the door sill beam, the front subframe rear mounting bracket, the front enclosure lower cross beam and the floor front cross beam is made of aluminum profile;

[0029] And / or, the torsion box adopts a cast aluminum structure.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] The vehicle body structure described in the present invention enables the torsion box to be tilted backward in the direction pointing to the door sill beam, and forms a backward tilted guide surface on the front side of the torsion box. When a collision occurs, the front wheels can be guided to deflect toward the outside of the passenger compartment during the collision deformation process, and hard contact between the wheels and the passenger compartment structure during the collision process can be avoided. 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 beneficial 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.

[0032] 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 torsion 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 in the notch. When a head-on collision occurs in the vehicle, the front side of the torsion box can guide the front wheels, so that the front wheels move outward and the front wheels are prevented from intruding into the cockpit.

[0033] The upper part of the torsion box is connected between the front engine compartment longitudinal beam and the lower cross beam of the front enclosure, and the front engine compartment longitudinal beam, the lower cross beam of the front enclosure and the torsion box are connected to form a triangular structure, which can increase the side rigidity of the vehicle body and improve the collision force transmission effect between the torsion box and the surrounding parts by utilizing the high strength of the triangular structure. The installation of the rear end of the front subframe can be facilitated by setting the rear mounting bracket of the front subframe, and the installation groove is formed between the rear mounting bracket of the front subframe and the torsion box, which can facilitate the connection between the front engine compartment longitudinal beam, the rear mounting bracket of the front subframe and the torsion box, and also ensure the reliability of the connection.

[0034] 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, as well as improve the collision force transmission performance between the front cabin longitudinal beam and the front panel lower cross beam.

[0035] By connecting the end of the front cross beam of the floor to the A-pillar and connecting it with the door sill beam, and also providing a protrusion connected to the front cross beam of the floor on the rear mounting bracket of the front subframe, the stability of the setting of the front cross beam of the floor can be ensured, and at the same time, the connection between the front cross beam of the floor and the rear mounting bracket of the front subframe can be utilized to form a force transmission channel between the front engine room longitudinal beam and the front cross beam of the floor, which helps to transmit and disperse the collision force from the front engine room longitudinal beam to the A-pillars on both sides and the door sill beam position.

[0036] Furthermore, the A-pillar lower connecting plate and the A-pillar lower reinforcement are arranged in the A-pillar, and the door sill beam is sandwiched between the A-pillar lower connecting plate and the A-pillar lower reinforcement, which can ensure the connection effect between the A-pillar and the door sill beam, and also facilitate the connection between the floor front cross beam and the A-pillar. The torsion box, the front wall lower cross beam, the A-pillar lower connecting plate and the A-pillar lower reinforcement are connected together through the connecting piece, which can ensure the stability of the front wall lower cross beam and improve the transmission and dispersion effect of the collision force on the side of the vehicle body.

[0037] The overlapping boss for the front floor beam to overlap is arranged on the lower connecting plate of the A-pillar, which can facilitate the connection between the front floor beam and the lower connecting piece of the A-pillar and ensure the reliability of the connection between the two. By arranging the lower front support beam in an inclined manner and connecting the lower front support beam with the front cabin longitudinal beam, the stability of the front floor beam can be further increased, and the transmission effect of the collision force between the front cabin longitudinal beam and the front floor beam can be further improved.

[0038] In addition, an extension is provided at the rear end of the front cabin longitudinal beam, and the rear end of the extension is formed into an inclined surface parallel to the front enclosure lower support beam, and the collision force transmission performance between the front cabin longitudinal beam and the front enclosure lower support beam can be better increased by directly connecting the front cabin longitudinal beam and the front enclosure lower support beam. A mounting opening is formed between the front enclosure lower support beam and the front cabin longitudinal beam, and the bottom of the front enclosure lower cross beam is located in the mounting opening, which can facilitate the connection between the front enclosure lower cross beam and the front cabin longitudinal beam and the front enclosure lower support beam and other peripheral parts, and also ensure the connection effect between the front enclosure lower cross beam and the front cabin longitudinal beam and the front enclosure lower support beam.

[0039] The front cabin longitudinal beam, door sill beam, front subframe rear mounting bracket, front enclosure lower cross beam and floor front cross beam are made of aluminum profiles, and the torsion box is made of cast aluminum structure, which 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, the low weight and high strength of the aluminum profile and the cast aluminum structure can be utilized, which is beneficial to the lightweight of each beam structure, the front subframe rear mounting bracket and the torsion box, and ensure the structural strength of each beam structure, the front subframe rear mounting bracket and the torsion box, which is beneficial to improving the overall performance of the vehicle body structure.

[0040] Another object of the present invention is to provide a vehicle having the vehicle body structure as described above.

[0041] The vehicle described in the present invention has the same beneficial effects as the above-mentioned vehicle body structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0043] Figure 1 A schematic diagram of a vehicle body structure according to an embodiment of the present invention;

[0044] Figure 2 for Figure 1 Schematic diagrams of the structure shown from other viewing angles;

[0045] Figure 3 for Figure 1 Schematic diagrams of the structure shown from other viewing angles;

[0046] Figure 4 for Figure 1 The top view shown;

[0047] Figure 5 A schematic diagram of the connection between the torque box and the peripheral components according to an embodiment of the present invention;

[0048] Figure 6It is a structural schematic diagram of a torque box according to an embodiment of the present invention;

[0049] Figure 7 It is a schematic structural diagram of the front wall lower cross beam according to an embodiment of the present invention;

[0050] Figure 8 Schematic diagram of the front wall lower cross beam according to the embodiment of the present invention from other viewing angles;

[0051] Fig. 9 It is a schematic diagram of the structure of the installation slot according to an embodiment of the present invention;

[0052] Fig.10 It is a schematic structural diagram of the front sub-frame rear mounting bracket according to an embodiment of the present invention;

[0053] Fig.11 for Figure 3 An enlarged schematic diagram of a local part of the structure shown;

[0054] Fig.12 A schematic diagram of the structure of the A-pillar according to an embodiment of the present invention;

[0055] Fig.13 for Fig.12 Schematic diagrams of the structure shown from other viewing angles;

[0056] Fig.14 This is a schematic structural diagram of a front cabin longitudinal beam according to an embodiment of the present invention;

[0057] Fig.15 This is a schematic diagram of the coordination of the front cabin longitudinal beam and the front enclosure lower support beam according to an embodiment of the present invention;

[0058] Description of reference numerals:

[0059] 1. Front cabin longitudinal beam; 2. Door sill beam; 3. Torque box; 4. A-pillar; 5. Front lower cross beam; 6. Support beam inside the longitudinal beam; 7. Front subframe rear mounting bracket; 8. Floor front cross beam; 9. Front lower support beam; 10. First bolt; 11. Second bolt; 12. Third bolt; 13. Fourth bolt; 14. Fifth bolt;

[0060] 1a, extension; 301, notch; 302, cavity; 303, reinforcing rib plate; 3031, transverse rib plate; 3032, vertical rib plate; 3a, upper connection hole; 3b, lower connection hole; 3c, door sill connection hole; 401, A-pillar lower connection 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;

[0061] 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

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0063] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first", "second", etc., they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0064] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0065] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0066] Embodiment 1

[0067] This embodiment relates to a vehicle body structure, combined with Figures 1 to 4 As shown, in terms of overall structure, the vehicle body 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 .

[0068] Among them, from the up and down direction of the whole vehicle, the threshold beam 2 is located on the side of the front engine compartment longitudinal beam 1 close to the outside of the vehicle, and the torque box 3 is tilted backward in the direction pointing to the threshold beam 2, and a backward-inclined guide surface s is formed on the front side of the torque box 3.

[0069] At this time, as set above, by making the torsion box 3 tilted backward 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, 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 passenger compartment using a large number of parts to strengthen, which can achieve the effect of lightweighting the vehicle body and helping to increase the cruising range of the entire vehicle.

[0070] Based on the above overall introduction, Figure 4 As shown, from the vertical direction of the vehicle, the torque box 3 of this embodiment is also a straight-line structure arranged obliquely, and continues as shown in FIG. Figure 5 and Figure 6 As shown in the figure, the torsion box 3 of the present embodiment is specifically connected to the side of the threshold 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 threshold beam 2 to extend forward, and at the same time, the front end surface t of the threshold beam 2 is also flush with the guide surface s.

[0071] At this time, by providing a notch 301 for the sill beam 2 to extend forward on the torsion box 3, it can be understood that the provision of the notch 301 is conducive to reducing the weight of the torsion box 3 and can also increase the torsion transmission capacity between the torsion 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 torsion box 3, which can also ensure the guiding effect of the front side of the torsion box 3 on the front wheels when the vehicle has a head-on collision, so that the front wheels can move outwards and avoid the front wheels from intruding into the cockpit.

[0072] It is worth noting that, based on the setting of the notch 301 on the torsion box 3, in addition to making the front end surface t of the sill beam 2 located in the notch 301, of course, in the specific implementation, making the front end surface t of the sill beam 2 located in the notch 301 can also ensure the guiding effect of the front side of the torsion box 3 on the front wheels when the vehicle has a head-on collision, so that the front wheels can move outward.

[0073] In this embodiment, Figure 6 As shown in , as a preferred embodiment, the torque box 3 can adopt a cast aluminum structure, so that the torque box 3 adopts a cast aluminum structure, which can facilitate the preparation of the torque box and reduce 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 beneficial to the lightweight of the torque box and ensure the structural strength of the torque box.

[0074] In addition, based on the casting of the torsion box 3, in the specific structure, in addition to the notch 301, for example, a cavity 302 may be provided on the torsion box 3, and a reinforcing rib plate 303 may be provided in the cavity 302. The reinforcing rib plate 303 may, for example, include a transverse rib plate 3031 arranged along the left-right direction of the vehicle, and a vertical rib plate 3032 arranged along the up-down direction of the vehicle, and the transverse rib plate 3031 may preferably be a plurality of rib plates arranged at intervals, and the vertical rib plates 3032 may be interlaced and connected with at least part of the transverse rib plates 3031.

[0075] 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 lightweight 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 whole vehicle) force transmission channel in the torsion box 3 to ensure the collision force transmission effect of the torsion box 3 between the front cabin longitudinal beam 1, the sill beam 2 and the A-pillar 4.

[0076] In this embodiment, still refer to Figure 6 As shown, 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 through a fourth bolt 13 passing through the upper connecting hole 3a, and at the same time, the torque box 3 can also be connected to the threshold beam 2 through a bolt structure connected to the threshold connecting hole 3c.

[0077] Still by Figures 1 to 4 , and combined with Figure 7 and Figure 8 As shown in the figure, the vehicle body structure of this embodiment also includes an A-pillar 4 and a front panel 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 panel lower cross beam 5 is connected to the A-pillar 4. At the same time, the rear end of the front engine room longitudinal beam 1 is connected to the front panel lower cross beam 5, and the upper part of the torque box 3 is also connected between the front engine room longitudinal beam 1 and the front panel lower cross beam 5, and the front engine room longitudinal beam 1, the front panel lower cross beam 5 and the torque box 3 are connected to form a triangular structure.

[0078] At this time, by connecting the upper part of the torsion box 3 between the front engine compartment longitudinal beam 1 and the front enclosure lower cross beam 5, and connecting the front engine compartment longitudinal beam 1, the front enclosure 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 engine compartment longitudinal beam 1, the torsion box 3 and the front enclosure lower cross beam 5.

[0079] In addition, as a preferred embodiment, the lower cross member 5 of the front wall can be made of extruded aluminum profiles, and in terms of structure, it also includes a middle section 501 located in the middle, and A-pillar connecting sections 502 arranged on the left and right sides, and each side A-pillar connecting section 502 is connected to the middle section 501 through a transition section 503. At the same time, each side transition section 503 is also arranged downwardly in the left and right direction of the whole vehicle, and each side A-pillar connecting section 502 is respectively provided with an A-pillar connecting hole 504 connected to the A-pillar 4 on the same side.

[0080] In this way, by making the front panel lower cross beam 5 adopt extruded aluminum profile 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 capacity 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, which helps to improve the collision safety of the vehicle.

[0081] In this embodiment, based on the structural design of the front wall lower cross beam 5, as a preferred implementation form, still refer to Figure 7 and Figure 8 As shown, the middle section 501 and the side A-pillar connecting sections 502 can be set as a straight structure extending along the left-right direction of the vehicle. In this way, the middle section 501 and the A-pillar connecting sections 502 are both straight structures, which is not only conducive to the preparation and molding of the front wall lower cross beam 5, but also can improve the lateral (left-right direction of the vehicle) force transmission performance of the front wall lower cross beam 5.

[0082] While the middle section 501 and each A-pillar connecting section 502 preferably adopt a straight structure, as a preferred implementation form, the transition sections 503 on each side of the front lower cross beam 5 can also be set as a straight structure set downward. In this case, it can be understood that making the transition section 503 a straight structure set downward can also facilitate the formation of the transition section 503 and improve the force transmission effect of the transition section 503 between the middle section 501 and the A-pillar connecting section 502.

[0083] In this embodiment, it is worth noting that the front wall lower cross beam 5 is made of extruded aluminum profiles. Figure 8As shown, during its preparation, for example, a machining process can be further adopted after extrusion molding to remove the bottom removal area M at the bottom of the front lower cross beam 5 and the top removal area N at both ends of the top of the front lower cross beam 5, thereby forming the middle section 501 in the front lower cross beam 5, as well as the transition sections 503 and the A-pillar connecting section 502 on each side, and meeting the setting requirements of the A-pillar connecting section 502 and the transition section 503.

[0084] Still by Figures 1 to 4 , and continue to combine Fig. 9 and Fig.10 As shown in the figure, the vehicle body structure of the present embodiment further includes a front subframe rear mounting bracket 7, which is connected to the side of the torque 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 torque box 3, and the bottom of the rear section of the front cabin longitudinal beam 1 is connected to the mounting groove g.

[0085] At this time, through the arrangement of the above-mentioned front sub-frame rear mounting bracket 7, the installation of the rear end of the front sub-frame can be facilitated, and the installation groove g is formed between the front sub-frame rear mounting bracket 7 and the torque box 3, which can also facilitate the connection between the front cabin longitudinal beam 1 and the front sub-frame rear mounting bracket 7 and the torque box 3, and at the same time, the reliability of the connection between them can be ensured.

[0086] For specific implementation, please refer to Fig.10 As shown, the above-mentioned front sub-frame rear mounting bracket 7 can also adopt aluminum profiles, and the front sub-frame rear mounting bracket 7 adopts aluminum profiles. It can be understood that it can also facilitate the preparation of the front sub-frame rear mounting bracket 7 and reduce its preparation cost. At the same time, it can of course also take advantage of the low weight and high strength of the aluminum profile, which is beneficial to the lightweight of the front sub-frame rear mounting bracket 7 and ensure the structural strength of the front sub-frame rear mounting bracket 7.

[0087] It should be noted that when aluminum profiles are used, for example, a notch 7b can be formed on one side of the top of the front sub-frame rear mounting bracket 7. When the torque box 3 and the front sub-frame rear mounting bracket 7 are connected, the notch 7b also forms the above-mentioned mounting groove g for accommodating the bottom of the rear section of the front cabin longitudinal beam 1. In addition, in this embodiment, a bracket connecting hole 7c can be provided on the side of the front sub-frame rear mounting bracket 7 facing the torque box 3. The bracket connecting hole 7c can be, for example, a threaded connecting hole, and correspondingly, a lower connecting hole 3b can be provided on the torque box 3 for cooperating with the fifth bolt 14 to achieve the connection between the torque box 3 and the front sub-frame rear mounting bracket 7.

[0088] In this embodiment, continue as Figure 2 and Fig. 9As shown in FIG. 1 , as a preferred embodiment, 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 wall lower cross beam 5, and the front cabin longitudinal beam 1, the front wall lower cross beam 5 and the longitudinal beam inner support beam 6 are also connected to form a triangular structure.

[0089] It can be understood that by providing the above-mentioned longitudinal beam inner support beam 6 and connecting the front engine compartment 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 engine compartment longitudinal beam 1 and the front panel lower cross beam 5, and improve the collision force transmission performance between the front engine compartment longitudinal beam 1 and the front panel lower cross beam 5, thereby helping to improve the collision safety of the entire vehicle.

[0090] Still by Figures 1 to 4 , and continue to combine Fig.11 As shown, the vehicle body structure of this embodiment further includes a floor front cross beam 8 located at the rear and lower part of the front wall lower cross beam 5. The end of the floor front cross beam 8 is connected to the A-pillar 4 and is connected to the door sill beam 2 in the left and right direction of the vehicle. At the same time, as a preferred embodiment, still refer to Fig.10 As shown, in this embodiment, a protrusion 7 a extending toward the front floor cross beam 8 is also provided at the rear end of the front sub-frame rear mounting bracket 7 , and the protrusion 7 a is connected to the front floor cross beam 8 .

[0091] At this point, it should be noted that the connection between the above-mentioned front floor beam 8 and the door sill beam 2, that is, the projections of the two in the left-right direction of the whole vehicle at least partially overlap. By connecting the end of the front floor beam 8 to the A-pillar 4 and connecting with the door sill beam 2, and also providing a protrusion 7a connected to the front floor beam 8 on the rear mounting bracket 7 of the front subframe, it can be understood that it can not only ensure the stability of the setting of the front floor beam 8, but also form a force transmission channel between the front cabin longitudinal beam 1 and the front floor beam 8 by utilizing the connection between the front floor beam 8 and the rear mounting bracket 7 of the front subframe, thereby facilitating the transmission and dispersion of the collision force from the front cabin longitudinal beam 1 to the A-pillars 4 on both sides and the door sill beam 2.

[0092] Continue to combine Fig.12 and Fig.13 As shown in the figure, for the A-pillar 4 of this embodiment, it can adopt a conventional structure consisting of an A-pillar inner plate and an A-pillar reinforcement plate that are snap-fitted together, and in order to better reflect the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402 described below, the A-pillar inner plate and the A-pillar reinforcement plate are not shown in the figures. Of course, in specific implementation, the A-pillar inner plate and the A-pillar reinforcement plate can be set in an existing conventional form.

[0093] In this embodiment, as a preferred implementation form, as described above, the A-pillar 4 has an A-pillar lower connecting plate 401 and an A-pillar lower reinforcement 402 located on the side of the A-pillar lower connecting plate 401 close to the vehicle exterior. Fig.13 As shown, the sill 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 also connected to the sill beam 2, and the front panel lower cross beam 5 and the floor front cross beam 8 are both connected to the A-pillar lower connecting plate 401.

[0094] In a specific implementation, the A-pillar lower connecting plate 401 can be, for example, Fig.12 The step-shaped structure is shown, and the lower part thereof overlaps the side and top of the door sill beam 2, and the upper part thereof can overlap the A-pillar inner plate not shown in the figure. In addition, the A-pillar lower reinforcement 402 is usually arranged between the A-pillar inner plate and the A-pillar reinforcement plate which are connected by snapping, and the A-pillar lower connecting plate 401 and the door sill beam 2 can be connected by rivets, for example, and the A-pillar lower reinforcement 402 and the door sill beam 2 can be connected by a bolt structure.

[0095] In this embodiment, the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402 are arranged in the A-pillar 4, and the door sill beam 2 is sandwiched between the A-pillar lower connecting plate 401 and the A-pillar lower reinforcement 402. Obviously, it can ensure the connection effect between the A-pillar 4 and the door sill beam 2, and it can also facilitate the connection between the front floor beam 8 and the A-pillar 4.

[0096] In addition, as a preferred implementation form, this embodiment can also connect 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 together through a connecting piece. In this way, by connecting 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 together through a connecting piece, the stability of the front wall lower cross beam 5 can be ensured, and the transmission and dispersion effect of the collision force on the side of the vehicle body can also be improved.

[0097] For specific implementation, please refer to Figure 5 and Fig.13 As shown, the above-mentioned connecting member can adopt a second bolt 11, for example, and a connecting hole 4a can be set 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 of the front enclosure and the connecting hole 4a, it can be screwed on the lower reinforcement 402 of the A-pillar.

[0098] In addition, in addition to the connection between the torsion box 3, the front wall lower cross beam 5 and the A-pillar 4 through the second bolt 11, of course, continue as follows Figure 5As shown, in specific implementation, this embodiment can also connect the front panel lower cross beam 5 and the A-pillar 4 together via the first bolt 10, and connect the torque box 3 and the front panel lower cross beam 5 together by cooperating with the lower cross beam connecting hole 505 on the front panel lower cross beam 5 through the third bolt 12.

[0099] Through the connection of the above bolts, the torque box 3, the front lower cross beam 5, the A-pillar 4 and even the front cabin longitudinal beam 1 and the front subframe rear mounting bracket 7 can be reliably connected to meet the rigidity requirements of the vehicle body structure. At the same time, it should be noted that the location and number of the above bolts can be selected according to specific design requirements.

[0100] In this embodiment, Fig.11 and Fig.12 As shown in the figure, as a preferred embodiment, a lap boss 403 is also provided on the A-pillar lower connecting plate 401, and the end portion of the front floor beam 8 is overlapped on the lap boss 403. At this time, by providing the lap boss 403 for the front floor beam 8 to overlap on the A-pillar lower connecting plate 401, the connection between the front floor beam 8 and the A-pillar lower connecting piece 401 can be facilitated, and of course, the reliability of the connection between the two can also be ensured.

[0101] In a specific implementation, the A-pillar lower connecting plate 401 may also be made of cast aluminum, and the lap boss 403 may be integrally formed when the A-pillar lower connecting plate 401 is prepared. In addition, to ensure the stability of the lap boss 403, a reinforcing rib may be provided at its bottom, and the end of the front floor beam 8 and the lap boss 403, as well as the other end of the front floor beam 8 and the A-pillar lower connecting plate 401, may generally be connected by welding.

[0102] In this embodiment, Figure 3 , Figure 4 as well as Fig.11 As shown in FIG. 1 , as a preferred embodiment, a front wall lower support beam 9 is also connected between the front wall lower cross beam 5 and the floor front cross beam 8. The front wall lower support beam 9 is arranged downwardly inclined in the direction pointing to the floor front cross beam 8, and the front wall lower support beam 9 and the front cabin longitudinal beam 1 are also connected in the front-to-back direction of the vehicle.

[0103] At this time, the connection between the front wall lower support beam 9 and the front cabin longitudinal beam 1, that is, the projections of the two in the front and rear direction of the whole vehicle at least partially overlap. Moreover, it can be understood that by setting the front wall lower support beam 9 in an inclined arrangement and connecting the front wall lower support beam 9 with the front cabin longitudinal beam 1, the stability of the floor front cross beam 8 can be further increased, and the transmission effect of the collision force between the front cabin longitudinal beam 1 and the floor front cross beam 8 can also be further improved, so as to increase the safety of the whole vehicle collision.

[0104] Continue as Fig.14 and Fig.15 As shown in , as a preferred implementation form, on the basis of the front wall lower support beam 9, this embodiment also provides an extension portion 1a at the bottom of the rear end of the front cabin longitudinal beam 1, and the extension portion 1a is located at the bottom of the front wall lower cross beam 5 and extends toward the front wall lower support beam 9. At the same time, the rear end of the extension portion 1a is also an inclined surface w parallel to the front wall lower support beam 9, and the inclined surface w is overlapped on the front wall lower support beam 9.

[0105] Therefore, by setting 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 the front panel lower support beam 9, it can be understood that it can directly connect the front cabin longitudinal beam 1 and the front panel lower support beam 9 to better increase the collision force transmission performance between the two.

[0106] In this embodiment, on the basis of the setting of the above-mentioned extension portion 1a, further, an installation opening k is also formed between the rear end of the front enclosure lower support beam 9 and the front cabin longitudinal beam 1, and the bottom of the front enclosure lower cross beam 5 is connected to the installation opening k. At this time, the installation opening k is formed between the front enclosure lower support beam 9 and the front cabin longitudinal beam 1, and the bottom of the front enclosure lower cross beam 5 is located in the installation opening k, which obviously facilitates the connection between the front enclosure lower cross beam 5 and the front cabin longitudinal beam 1 and the front enclosure lower support beam 9 and other peripheral parts, and also ensures the connection effect between the front enclosure lower cross beam 5 and the front cabin longitudinal beam 1 and the front enclosure lower support beam 9.

[0107] In specific implementation, the front wall lower support beam 9 and the floor front cross beam 8, as well as the front wall lower support beam 9 and the front wall lower cross beam 5, can be connected by welding. In addition, as a preferred embodiment, the front wall lower support beam 9 and the longitudinal beam inner support beam 6 can also be made of aluminum profiles, and in addition to being connected by welding, the longitudinal beam inner support beam 6 can also be connected to the front cabin longitudinal beam 1 and the front wall lower cross beam 5 by rivets.

[0108] In this embodiment, as a preferred implementation form, one, more or all of the front cabin longitudinal beam 1, the door sill beam 2, the front wall lower cross beam 5 and the floor front cross beam 8 may also be made of aluminum profiles. In this way, the front cabin longitudinal beam 1, the door sill beam 2, the front wall lower cross beam 5 and the floor front cross beam 8 are also made of aluminum profiles, which can also facilitate the preparation of each beam structure and reduce its preparation cost. At the same time, the characteristics of low weight and high strength of aluminum profiles can be used to facilitate the lightweight of each beam structure, ensure the structural strength of each beam structure, and help improve the overall performance of the vehicle body structure.

[0109] The vehicle body structure of the present embodiment adopts the above structure. By making the torsion box 3 tilted backward in the direction pointing to the door sill beam 2 and forming a backward tilted 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 when a collision occurs, so as to avoid hard contact between the wheels and the passenger compartment structure during the collision. Therefore, it can adopt the strategy of using softness to overcome hardness to resolve the transmission of the collision to the passenger compartment, and can also avoid the damage to the driver and passengers caused by excessive acceleration caused by "hard collision". It not only helps to improve the collision safety of the whole vehicle, but also can avoid the passenger compartment from being strengthened by a large number of parts, which is beneficial to the lightweight of the vehicle body and helps to increase the cruising range of the whole vehicle, and has good practicality.

[0110] Embodiment 2

[0111] This embodiment relates to a vehicle having the vehicle body structure in the first embodiment.

[0112] The vehicle of this embodiment is provided with the body structure of the first embodiment, which helps to improve the collision safety of the whole vehicle, and can also avoid the use of a large number of parts to strengthen the passenger compartment, which is conducive to lightweighting of the body, helps to increase the cruising range of the whole vehicle, and has good practicality.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body structure, Features: 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 the 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 the 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, Features: 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, Features: It also includes an A-pillar (4) and a front lower cross beam (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, Features: 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).

5. The vehicle body structure according to claim 4, Features: A longitudinal beam inner support beam (6) is 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 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.

6. The vehicle body structure according to claim 4, Features: It also includes a floor front cross beam (8) located at the rear and lower part 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 connected to 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).

7. The vehicle body structure according to claim 6, Features: 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).

8. The vehicle body structure according to claim 7, Features: 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 a lapped boss (403), and a portion of the end of the floor front cross beam (8) is lapped on the lapped boss (403).

9. The vehicle body structure according to claim 6, Features: 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 connected to the front cabin longitudinal beam (1) in the front-rear direction of the entire vehicle.

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

11. The vehicle body structure according to any one of claims 6 to 10, Features: 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.

12. A vehicle, Features: The vehicle has the vehicle body structure according to any one of claims 1 to 11.

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