Vehicle body front structure and vehicle

Abstract

The application provides a vehicle body front structure and a vehicle. The vehicle body front structure comprises a front cabin, front cabin longitudinal beams arranged on left and right sides, front wheel cover side beams arranged outside the front cabin longitudinal beams, and a front end frame arranged between the bending positions of the front cabin longitudinal beams on the left and right sides. The front parts of the front cabin longitudinal beams on the left and right sides are bent towards the outside of the vehicle to form overhanging sections. The front ends of the front wheel cover side beams on the left and right sides are connected with the overhanging sections on the same side. The rear ends of the front wheel cover side beams on the left and right sides are connected with a front windshield lower cross beam. An inclined beam is arranged between each front wheel cover side beam and the front end frame. The front end frame, the front windshield lower cross beam, and the front wheel cover side beams and the inclined beams on the left and right sides are connected to form a ring structure. The vehicle body front structure increases the overall rigidity of the front cabin position of the front part of the vehicle body, is beneficial to the dispersion of the collision force at the front cabin position, and is helpful to improve the collision safety of the whole vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle body, in particular to a vehicle body front structure. BACKGROUND

[0002] With the continuous development of automobile technology, especially the increasing popularity of new energy vehicles, vehicle safety has become the object of people's increasing concern, which also brings new challenges to the vehicle body design work. In the vehicle body, the front part of the vehicle body generally has a front engine compartment, a front subframe and other skeletal structures. These structures are not only the load-bearing basis for components such as front-mounted power assembly, front suspension assembly, and air conditioner, but also the main force transmission channel during vehicle collision, especially during frontal collision and offset collision. However, in the existing vehicle body front structure, the front engine compartment position still has the problems of weak structure performance and single force transmission channel in design, which makes it difficult to achieve effective transmission of collision force and affects the improvement of the vehicle collision safety performance. SUMMARY

[0003] Therefore, the present application aims to provide a vehicle body front structure to improve the safety of the vehicle.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A vehicle body front structure, comprising a front engine compartment;

[0006] The front engine compartment has front engine compartment longitudinal beams arranged on the left and right sides, front wheel cover side beams arranged on the outer sides of the front engine compartment longitudinal beams, and a front end frame arranged between the bending parts of the front engine compartment longitudinal beams on both sides;

[0007] The front parts of the front engine compartment longitudinal beams on both sides are bent outward to form outward extending sections, and the front ends of the front wheel cover side beams on each side are connected with the outward extending sections on the same side;

[0008] The rear ends of the front wheel cover side beams on both sides are connected with a front windshield lower cross beam, and an inclined beam is arranged between each side of the front wheel cover side beam and the front end frame, and the front end frame, the front windshield lower cross beam, and the front wheel cover side beams on both sides and the inclined beams are connected to form a ring-shaped structure.

[0009] Further, the bending parts of the front engine compartment longitudinal beams on each side are connected with a connecting bracket, and the front engine compartment further has a front crash beam assembly connected with the connecting brackets on both sides;

[0010] The front end frame is connected between the front crash beam assembly and the connecting brackets on both sides;

[0011] The front end frame, the connecting support and the front wheel cover side beam on each side are connected to form a ring structure.

[0012] Further, the front anti-collision beam assembly comprises energy absorption boxes connected to the connecting supports on both sides respectively, and a front anti-collision beam connected to the energy absorption boxes on both sides;

[0013] The front end frame comprises side supports arranged on the left and right sides respectively, and an upper support connected between the top ends of the side supports on both sides;

[0014] The side supports on both sides are connected between the energy absorption boxes and the connecting supports on the same side, and the cable-stayed beams on both sides are connected to the upper support.

[0015] Further, a lower cross beam is connected between the bottom ends of the side supports on both sides, and the lower cross beam is arranged lower than the front anti-collision beam in the vehicle height direction; and / or,

[0016] The distance between the front ends of the front engine compartment longitudinal beams on both sides in the left-right direction of the vehicle is greater than the distance between the left and right ends of the front anti-collision beam in the left-right direction of the vehicle.

[0017] Further, the front engine compartment further comprises front shock towers connected between the front engine compartment longitudinal beams and the front wheel cover side beams on each side respectively;

[0018] The side portions of the front shock towers on both sides are respectively provided with front reinforcing longitudinal beams arranged in the height direction of the front shock towers, and the bottom ends of the front reinforcing longitudinal beams on both sides are connected together through a front engine compartment lower cross beam arranged between the front engine compartment longitudinal beams on both sides.

[0019] Further, a support cross beam is connected between the connecting supports on both sides, and the front engine compartment lower cross beam, the support cross beam, and the front engine compartment longitudinal beams and the connecting supports on both sides are connected to form a ring structure; and / or,

[0020] The rear end of the front wheel cover side beam on each side has a first connecting arm and a second connecting arm arranged in a diverging manner, the first connecting arm is connected to the front windshield lower cross beam, and the rear ends of the first connecting arm and the second connecting arm are both connected to the A-pillar on the same side, and a collapse cavity is formed between the first connecting arm, the second connecting arm and the A-pillar.

[0021] Further, the side portions of the front shock towers on each side are respectively provided with rear reinforcing longitudinal beams;

[0022] Each of the rear reinforcing longitudinal beams is arranged side by side behind the front reinforcing longitudinal beams on the same side, and the bottom ends of the rear reinforcing longitudinal beams on both sides are connected to the front cabin longitudinal beams on the same side, and the top ends of the rear reinforcing longitudinal beams on both sides are connected together through the front cabin upper cross beam arranged between the top parts of the front shock towers on both sides.

[0023] Further, the distance between the front reinforcing longitudinal beams and the rear reinforcing longitudinal beams on each side gradually decreases from bottom to top in the vehicle height direction; and / or,

[0024] The front cabin upper cross beam is connected with the front windshield lower cross beam through a connecting bracket, and the connecting bracket at least includes side brackets arranged close to the front shock towers on both sides.

[0025] Further, a front subframe is arranged at the bottom of the front cabin;

[0026] The mounting points on the left and right sides of the front part of the front subframe are mounted on the connecting brackets on both sides, and the front part of the front subframe is provided with a front subframe cross beam between the mounting points on both sides;

[0027] The front subframe cross beam and the front end frame are connected through the connecting brackets on both sides to form a ring structure.

[0028] Further, the middle part of the front subframe is provided with mounting arms connected with the front cabin longitudinal beams on both sides, and a subframe middle cross beam is arranged between the mounting arms on both sides;

[0029] The mounting arms on both sides are arranged in connection with the rear reinforcing longitudinal beams on the same side in the vehicle height direction, and the front cabin upper cross beam, the subframe middle cross beam, and the rear reinforcing longitudinal beams and the front cabin longitudinal beams on both sides are connected to form a ring structure.

[0030] Further, the front cabin longitudinal beams on both sides are respectively provided with a lower force transmission beam inside the front cabin on one side;

[0031] The lower force transmission beams on both sides are connected to the side of the front apron facing the vehicle head, and one end of each of the lower force transmission beams on both sides is connected to the front cabin longitudinal beam on the same side, and the other end of each of the lower force transmission beams on both sides is connected to the middle tunnel reinforcing longitudinal beam on the same side.

[0032] Further, the lower force transmission beams on both sides are connected to the front ends of the middle tunnel reinforcing longitudinal beams on the same side, and a connecting plate is arranged between the front ends of the middle tunnel reinforcing longitudinal beams on both sides.

[0033] Further, the rear ends of the front cabin longitudinal beams on both sides are respectively connected with a torsion box;

[0034] The outer side of each side torsion box is connected with the side door sill beam and A column, and the inner side of each side torsion box is connected with the side middle tunnel reinforcement longitudinal beam;

[0035] The two side torsion boxes are connected through the connecting piece, and the front windshield lower cross beam, the connecting piece, and the two side A columns and the torsion boxes are connected to form a ring structure.

[0036] Further, the two side torsion boxes are both in a "person" shape, and have an outer box body and an inner box body connected together, the outer box body of each side is connected with the side door sill beam, the inner box body of each side is connected with the side middle tunnel reinforcement longitudinal beam, and the two side inner box bodies are connected through the connecting piece; and / or,

[0037] The connecting piece is a pipe beam.

[0038] Compared with the prior art, the present application has the following advantages:

[0039] The front body structure of the present application can make the front engine compartment longitudinal beam better participate in small overlap collision, can utilize the effective transmission of the front engine compartment longitudinal beam to the collision force, and improve the safety of small overlap collision; at the same time, through the setting of the inclined beam, and the connection of the front end frame, the front windshield lower cross beam, and the two side front wheel cover edge longitudinal beams and the inclined beam to form a ring structure, the characteristics of the large strength of the ring structure can also be utilized to increase the overall stiffness of the front engine compartment position of the front part of the vehicle body, and it is beneficial to the transmission and dispersion of the collision force at the front engine compartment position, which helps to improve the overall vehicle collision safety.

[0040] In addition, through the setting of the connecting bracket, the connection between the front crash beam assembly and the front end frame and the front engine compartment longitudinal beam can be facilitated, and the reliability of the connection can be ensured. The front engine compartment longitudinal beam, the front wheel cover edge beam, the inclined beam, the front end frame and the connecting bracket form a ring structure, which can also utilize the characteristics of the large strength of the ring structure to increase the structural strength of the two side positions of the front end. The front end frame is composed of two side brackets and an upper bracket at the top, which can simplify the structure of the front end frame and facilitate its design and preparation. The setting of the lower cross beam can avoid the rolling of pedestrians into the vehicle bottom when colliding with pedestrians, improve the safety of pedestrians, and also enable the front end frame and the lower cross beam to form a ring force transmission structure to improve the stiffness and collision safety of the front end of the vehicle body.

[0041] Secondly, the distance between the two ends of the front crash beam is less than the distance between the front ends of the two side front engine compartment longitudinal beams, which not only enables the front engine compartment longitudinal beam to participate in small overlap collision, but also has a higher participation degree compared with the front crash beam, so that the effective transmission of the front engine compartment longitudinal beam to the collision force can be utilized to improve the safety of small overlap collision and improve the overall vehicle safety quality.

[0042] The front reinforcing longitudinal beam can improve the structural strength of the shock tower position, and is beneficial to reducing the thickness of the shock tower, achieving weight reduction, and the front engine compartment lower cross beam can form a transverse connection between the two front shock towers, and can improve the Y-direction stiffness of the front part of the vehicle body. The support cross beam can also form a transverse connection between the two connecting brackets, and can improve the Y-direction stiffness of the front part of the vehicle body. The front engine compartment lower cross beam, the support cross beam, and the two front engine compartment longitudinal beams and the connecting brackets are connected to form a ring structure, the characteristics of the large strength of the ring structure are utilized, the overall stiffness of the middle position of the front engine compartment bottom is increased, and the collision force is beneficial to being dispersed at the front end of the front engine compartment, so as to improve the collision safety of the whole vehicle.

[0043] Secondly, the first connecting arm and the second connecting arm are arranged at the rear end of the front wheel cover side beam, and a collapse cavity is formed, which can not only increase the lateral support of the A-pillar to the front wheel cover side beam, but also can avoid excessive material stacking in the A-pillar area during the collision, increase the A-pillar intrusion amount and extrude the firewall, and improve the collision safety. The rear reinforcing longitudinal beam arranged at the side of the front shock tower can better improve the structural strength of the shock tower position, and is beneficial to further reducing the thickness of the shock tower and achieving weight reduction. At the same time, the front engine compartment upper cross beam is arranged, and a transverse connection can also be formed between the two front shock towers to improve the Y-direction stiffness of the front part of the vehicle body.

[0044] From bottom to top, the distance between the front reinforcing longitudinal beam and the rear reinforcing longitudinal beam is gradually reduced, so that the front reinforcing longitudinal beam and the rear reinforcing longitudinal beam form a whole "inverted V" structure, which can improve the reinforcing effect of the front shock tower structure. The connecting beam is arranged between the front engine compartment upper cross beam and the front windshield lower cross beam, which can increase the overall stiffness of the front side of the front wall, and can also increase the force transmission channel between the front shock tower and the front windshield lower cross beam, which is helpful to improve the safety of the whole vehicle. The side beam body is arranged close to the front shock tower, which can improve the reinforcing capacity of the front shock tower in the X-direction, and is helpful to increase the structural strength of the front shock tower.

[0045] In addition, the front cross beam of the subframe and the front end frame are connected to form a ring structure through the two connecting brackets, the characteristics of the large strength of the ring structure are utilized, and the overall stiffness of the front part of the vehicle is increased by means of the front subframe, which is beneficial to the dispersion of the collision force and the improvement of the safety of the whole vehicle. The front engine compartment upper cross beam, the subframe middle cross beam, and the two rear reinforcing longitudinal beams and the front engine compartment longitudinal beams are connected to form a ring structure, the characteristics of the large strength of the ring structure are also utilized, the overall strength of the front part of the vehicle body is further increased, and the dispersion of the collision force at the front part is beneficial, so that the safety of the whole vehicle can be improved.

[0046] By setting the lower transmission beam connecting the front engine compartment longitudinal beam and the middle channel reinforcing longitudinal beam, the connection strength between the front engine compartment longitudinal beam and the middle channel can be increased, and a new force transmission channel can be formed between the front engine compartment longitudinal beam and the middle channel, which is helpful for the transmission of the collision force between the two, and is conducive to improving the safety of the whole vehicle. The two middle channel reinforcing longitudinal beams are connected by the connecting plate, and the rigidity of the front end position of the middle channel can be increased through the connecting effect of the connecting plate, and a force transmission channel can be formed between the two middle channel reinforcing longitudinal beams, which is helpful for the transmission of the collision force between the left and right sides of the vehicle body.

[0047] The two torsion boxes are connected by the connecting piece, and the front windshield lower cross beam, the connecting piece, and the two A-pillars and torsion boxes are connected to form a ring structure, which can utilize the large strength of the ring structure to increase the overall rigidity of the rear end of the front engine compartment, and is conducive to improving the structural safety of the front engine compartment. The torsion box is in the shape of a "person", which can make the collision force transmitted by the front engine compartment longitudinal beam be transmitted to the left and right sides more evenly, and also can make the structural strength of the torsion box be higher and not easy to deform, and can improve the application effect of the torsion box. The connecting piece is a pipe beam, which can facilitate its preparation, and also can ensure the connection strength of the connecting piece.

[0048] Another object of the present application is to provide a vehicle provided with the vehicle body front structure as described above.

[0049] The vehicle and the above-mentioned vehicle body front structure have the same beneficial effects, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0050] The accompanying drawings, which form a part of the present application, are used to provide a further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explanations rather than limiting the present application. In the drawings:

[0051] Figure 1 A schematic view of the vehicle body front structure according to the embodiment of the present application;

[0052] Figure 2 A schematic view of the structure shown in the bottom view; Figure 1 A schematic view of the structure shown in the bottom view;

[0053] Figure 3 A schematic view of the structure shown in the bottom view; Figure 1 A schematic view of the middle part structure;

[0054] Figure 4 A schematic view of the middle part structure; Figure 3

[0055] A schematic view of the front engine compartment longitudinal beam according to the embodiment of the present application; Figure 5

[0056] Figure 6 ​The setting schematic view of the front and rear reinforcing longitudinal beams and the upper and lower transverse beams of the cabin according to the embodiment of the present application;

[0057] Figure 7 The setting schematic view of the connecting support according to the embodiment of the present application;

[0058] Figure 8 The structure schematic view of the front end frame according to the embodiment of the present application;

[0059] Figure 9 The schematic view of the distance between the front ends of the two front cabin longitudinal beams and the distance between the left and right ends of the front anti-collision beam;

[0060] Figure 10 The structure schematic view of the torsion box according to the embodiment of the present application;

[0061] Figure 11 The structure schematic view of the connecting piece according to the embodiment of the present application;

[0062] Figure 12 The setting schematic view of the lower force transmission beam according to the embodiment of the present application;

[0063] Figure 13 The structure schematic view of the lower force transmission beam according to the embodiment of the present application;

[0064] Figure 14 The structure schematic view of the front wheel cover side beam according to the embodiment of the present application;

[0065] Figure 15 The force transmission schematic view of the front wheel cover side beam according to the embodiment of the present application;

[0066] Figure 16 The setting schematic view of the front subframe according to the embodiment of the present application;

[0067] Figure 17 The schematic view from another perspective; Figure 16 The schematic view from another perspective;

[0068] Figure 18 The structure schematic view of the front subframe according to the embodiment of the present application;

[0069] Explanation of reference signs:

[0070] 1. Front engine compartment longitudinal beam; 2. Front shock absorber tower; 3. Front wheel arch side beam; 4. Front end frame; 5. Energy absorption box; 6. Front bumper beam; 7. Connecting bracket; 8. Support crossbeam; 9. Front engine compartment upper crossbeam; 10. Front engine compartment lower crossbeam; 11. Central tunnel reinforced longitudinal beam; 12. Torque box; 13. Connecting parts; 14. Front bulkhead; 15. Central tunnel; 16. Front bulkhead connecting plate; 17. Front floor; 18. Lower crossbeam; 19. Sill beam; 20. Lower force transmission beam; 21. Connecting plate; 22. Connecting beam; 23. A-pillar; 24. Front subframe; 25. Diagonal tie beam; 26. Front windshield lower crossbeam;

[0071] 101. Inner plate of longitudinal beam; 102. Outer plate of longitudinal beam; 1a. Extended section; 201. Front reinforcing longitudinal beam; 202. Rear reinforcing longitudinal beam; 301. First connecting arm; 302. Second connecting arm; 401. Side bracket; 402. Upper bracket; 901. Main body of crossbeam; 902. Crossbeam sealing plate; 1201. Outer box; 1202. Inner box; 20a. Arc-shaped surface; 2201. Middle beam; 2202. Side beam; 2401. Subframe longitudinal beam; 2402. Front crossbeam of subframe; 2403. Middle crossbeam of subframe; 2404. Rear crossbeam of subframe; 2405. Mounting arm;

[0072] Q. Collapse cavity. Detailed Implementation

[0073] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0074] In the description of this invention, it should be noted that the use of terms such as "upper," "lower," "inner," and "outer," indicating orientation or positional relationship, is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the use of terms such as "first" and "second" is also for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0075] Furthermore, in the description of this invention, unless otherwise explicitly specified, the connecting structures between mating components can be conventional in the art. Moreover, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0076] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0077] Embodiment One

[0078] This embodiment relates to a vehicle body front structure, which, as shown in Figures 1 to 4 includes a front engine compartment having front engine compartment side members 1 provided separately on left and right sides, front wheel house side beams 3 provided on the front engine compartment side members 1 on the side close to the outside of the vehicle, and a front end frame 4 provided between the bent portions of the front engine compartment side members 1 on the left and right sides.

[0079] In this embodiment, the front portions of the front engine compartment side members 1 on the left and right sides are bent outwards to form overhangs la, and the front ends of the front wheel house side beams 3 are connected to the overhangs la on the same side. The rear ends of the front wheel house side beams 3 are connected to a front windshield lower cross beam 26, and the front wheel house side beams 3 and the front end frame 4 are connected by diagonal beams 25. In addition, the front end frame 4, the front windshield lower cross beam 26, and the front wheel house side beams 3 and the diagonal beams 25 on the left and right sides are connected to form a ring structure.

[0080] In this embodiment, the front portions of the front engine compartment side members 1 are bent outwards to form overhangs la, so that the front engine compartment side members 1 can better participate in a small overlap collision, and the collision force can be effectively transmitted by the front engine compartment side members 1 to improve the safety of the small overlap collision.

[0081] At the same time, the diagonal beams 25 are provided, and the front end frame 4, the front windshield lower cross beam 26, and the front wheel house side beams 3 and the diagonal beams 25 on the left and right sides are connected to form a ring structure, so that the high strength of the ring structure can be utilized to increase the overall rigidity of the front engine compartment position of the vehicle body front portion, and the transmission and dispersion of the collision force at the front engine compartment position are facilitated.

[0082] Specifically, as shown in Figure 5 , as a preferred implementation form, the front engine compartment side members 1 of this embodiment may, for example, include a longitudinal beam inner plate 101 and a longitudinal beam outer plate 102 that are connected together by buckling, and the two after buckling form a longitudinal beam cavity together to ensure the structural strength of the front engine compartment side members 1. At the same time, the longitudinal beam inner plate 101 and the longitudinal beam outer plate 102 are also integrally formed, and the front portions of the longitudinal beam inner plate 101 and the longitudinal beam outer plate 102 are bent outwards to the outside of the vehicle, so as to realize the bending arrangement of the front portions of the front engine compartment side members 1.

[0083] Here, by the longitudinal beam inner plate 101 and the longitudinal beam outer plate 102 in the front engine compartment longitudinal beam 1 being integrally formed, the stability of the structure of the front engine compartment longitudinal beam 1 can be ensured. In addition, it is also worth mentioning that, in the specific design, the distance between the bending position of each side front engine compartment longitudinal beam 1 and the wheel envelope of the same side front wheel should be generally set to be more than 10 mm. In this way, based on the distance between the bending position of the front engine compartment longitudinal beam 1 and the front wheel envelope, interference with the front wheel can be avoided, and the smoothness of the movement of the front wheel can be ensured.

[0084] In actual design, the distance between the bending position of each side front engine compartment longitudinal beam 1 and the wheel envelope of the same side front wheel can be specifically set to be 10 mm or 12 mm, etc., as long as it is ensured that the front engine compartment longitudinal beam 1 does not interfere with the front wheel.

[0085] Continuing to combine Figure 6 With the outward bending of the front part of the front engine compartment longitudinal beam 1, the bending position of each side front engine compartment longitudinal beam 1 is connected with a connecting bracket 7, and the front engine compartment of the embodiment also has a front crash beam assembly connected with the two side connecting brackets 7. At this time, the above-mentioned front end frame 4 is specifically connected between the front crash beam assembly and the two side connecting brackets 7, and the front crash beam assembly includes energy absorption boxes 5 respectively connected with the two side connecting brackets 7, and a front crash beam 6 connected with the two side energy absorption boxes 5.

[0086] Among them, each side connecting bracket 7 can be a stamping part and can be welded into a box-shaped structure, and at the same time, from the top and bottom directions of the whole vehicle, each connecting bracket 7 can also be set to a triangular shape to ensure its structural strength and meet the connection strength requirements of each component at the front end of the front engine compartment.

[0087] In addition, based on the setting of the two side connecting brackets 7, the supporting cross beam 8 can also be connected between the two side connecting brackets 7 in the embodiment. The cross section of the supporting cross beam 8 can be "n" type to have better structural strength, and the two ends of the supporting cross beam 8 and the connecting brackets 7, and the connecting brackets 7 and the same side front engine compartment longitudinal beam 1 can be connected by welding.

[0088] In addition, in the embodiment, based on the connection between the two side front wheel cover side beams 3 and the front end frame 4, each side front engine compartment longitudinal beam 1, front wheel cover side beam 3, inclined cable beam 25, front end frame 4 and connecting bracket 7 are connected to form a ring-shaped structure. In this way, by connecting each side front engine compartment longitudinal beam 1, front wheel cover side beam 3, inclined cable beam 25, front end frame 4 and connecting bracket 7 to form a ring-shaped structure, the characteristics of the large ring-shaped structure strength can also be utilized to increase the structural strength of the two side positions of the front end, so as to help improve the safety of the whole vehicle.

[0089] Still referring to Figures 1 to 4 , and combining Figure 6 and Figure 7As shown, the front cabin of the embodiment further has front shock towers 2 connected between the front cabin longitudinal beams 1 and the front wheel cover side beams 3 respectively. And as a preferred implementation form, the side portions of the two front shock towers 2 are respectively provided with front reinforcing longitudinal beams 201 arranged along the height direction of the front shock towers 2, and the bottom ends of the two front reinforcing longitudinal beams 201 are connected together through the front cabin lower cross beam 10 arranged between the two front cabin longitudinal beams 1.

[0090] At this time, through the arrangement of the front reinforcing longitudinal beams 201 on the side portions of the front shock towers 2, the structural strength of the position where the front shock towers 2 are located can be improved, which is conducive to reducing the thickness of the shock towers and achieving weight reduction. At the same time, through the arrangement of the front cabin lower cross beam 10, transverse (i.e. left-right direction of the whole vehicle) connection can also be formed between the two front shock towers 2, thereby achieving the effect of improving the transverse stiffness of the front part of the vehicle body.

[0091] In specific implementation, the front reinforcing longitudinal beams 201 on the side portions of each front shock tower 2 extend along the height direction of the front shock tower 2, i.e. along the height direction of the whole vehicle. In addition, in specific arrangement, the front cabin lower cross beam 10 is also connected between the top portions of the two front cabin longitudinal beams 1, and the two front reinforcing longitudinal beams 201 are respectively buckled on the corresponding front shock tower 2 and form front longitudinal beam cavities with the front shock tower 2. At this time, the longitudinal beam cavities formed between the front reinforcing longitudinal beams 201 and the front shock towers 2 can take advantage of the large structural strength of the cavity to improve the structural strength of the front reinforcing longitudinal beams 201 themselves.

[0092] In addition, as a preferred implementation form, the cross section of the front cabin lower cross beam 10 of the embodiment can also be arranged in an "n" shape, and thereby a lower cross beam cavity is formed inside the front cabin lower cross beam 10. The bottom of the lower cross beam cavity is open, and the two ends of the lower cross beam cavity are also arranged to be through between the two front longitudinal beam cavities. In this way, by making the front cabin lower cross beam 10 adopt an "n" shaped cross section and forming a lower cross beam cavity inside it which is through with the longitudinal beam cavities, on the one hand, it can increase the structural strength of the front cabin lower cross beam 10 itself, and on the other hand, it can also ensure the reliability of the connection between the front cabin lower cross beam 10 and the two front reinforcing longitudinal beams 201, as well as the continuity of the force transmission channel formed therebetween, thereby helping to ensure the structural reinforcement effect and the collision force transmission effect.

[0093] As a preferred implementation form, in addition to the arrangement of the above-mentioned front reinforcing longitudinal beams 201, the embodiment also respectively arranges rear reinforcing longitudinal beams 202 on the side portions of each front shock tower 2. The rear reinforcing longitudinal beams 202 are arranged side by side behind the same side front reinforcing longitudinal beam 201, and the bottom ends of the two rear reinforcing longitudinal beams 202 are connected to the same side front cabin longitudinal beam 1, while the top ends of the two rear reinforcing longitudinal beams 202 are connected together through the front cabin upper cross beam 9 arranged between the top portions of the two front shock towers 2.

[0094] At this time, the setting of the rear reinforcing longitudinal beam 202 can further improve the structural strength of the position where the front shock tower 2 is located, and is beneficial to reducing the thickness of the shock tower and achieving weight reduction. Of course, through the setting of the front engine compartment upper transverse beam 9, the transverse (i.e. left-right direction of the whole vehicle) connection between the two front shock towers 2 can be increased to better improve the transverse stiffness of the front part of the vehicle body.

[0095] In specific implementation, based on the bottom end of each side rear reinforcing longitudinal beam 202 being connected with the front engine compartment longitudinal beam 1, as a preferred implementation form, the bottom end of each side rear reinforcing longitudinal beam 202 can be provided with an upper lap portion lapping on the top end face of the front engine compartment longitudinal beam 1, and a side lap portion lapping on the side end face of the front engine compartment longitudinal beam 1 facing the inside of the vehicle. The upper lap portion and the side lap portion can be formed by the flanging structure formed at the bottom end of the rear reinforcing longitudinal beam 202, and the rear reinforcing longitudinal beam 202 is connected with the front engine compartment longitudinal beam 1 through the upper lap portion and the side lap portion, which can improve the reliability of the connection between the two, and is beneficial to improving the longitudinal reinforcing effect of the rear reinforcing longitudinal beam 202.

[0096] In addition, as shown in FIG. 1, Figure 6 In the embodiment, the two side rear reinforcing longitudinal beams 202 are also buckled on the front shock tower 2 and the front engine compartment longitudinal beam 1, and a rear longitudinal beam cavity is formed between the front shock tower 2 and the front engine compartment longitudinal beam 1. At this time, the formation of the rear longitudinal beam cavity can also utilize the characteristic of large cavity structural strength to increase the structural strength of the rear reinforcing longitudinal beam 202 itself.

[0097] Corresponding to the above structure of the rear reinforcing longitudinal beam 202 and the formation of the rear longitudinal beam cavity, the front engine compartment upper transverse beam 9 of the embodiment specifically includes a transverse beam main body 901 connected with the top end of the two side rear reinforcing longitudinal beams 202, and a transverse beam sealing plate 902 connected between the top parts of the two front shock towers 2.

[0098] The transverse beam main body 901 has a "U" shaped cross section, and the transverse beam main body 901 and the transverse beam sealing plate 902 form an upper transverse beam cavity, and the two ends of the upper transverse beam cavity are throughly arranged between the two side rear longitudinal beam cavities. In addition, the two ends of the transverse beam sealing plate 902 are also lapped on the top parts of the front shock towers 2, and are connected with the front shock towers 2 by welding, so as to realize the connection between the two ends of the front engine compartment upper transverse beam 9 and the front shock towers 2, and further improve the transverse connection strength of the front engine compartment upper transverse beam 9 between the two front shock towers 2.

[0099] It can be understood that the front cabin upper cross beam 9 is composed of the cross beam body 901 and the cross beam sealing plate 902, which can facilitate the preparation of the front cabin upper cross beam 9, the formation of the upper cross beam cavity, and the penetration with the rear longitudinal beam cavity, and can also ensure the connection reliability between the front cabin upper cross beam 9 and the two side rear reinforcing longitudinal beams 202, and ensure the continuity of the force transmission channel formed between the front cabin upper cross beam 9 and the rear reinforcing longitudinal beams 202, which helps to improve the collision force transmission effect.

[0100] In addition, in specific implementation, the two side rear reinforcing longitudinal beams 202 are preferably integrally machined and formed with the cross beam body 901, which not only facilitates further improving the connection strength between the rear reinforcing longitudinal beams 202 and the front cabin upper cross beam 9, but also facilitates improving the penetration effect between the upper cross beam cavity and the two side rear longitudinal beam cavities, and the collision force transmission and dispersion effect is better. Of course, as a preferred implementation form, the connection between the rear reinforcing longitudinal beams 202 and the cross beam body 901 can adopt a circular arc smooth transition to avoid structural mutation at the connection, thereby facilitating the improvement of the force transmission efficiency.

[0101] It is worth noting that in specific preparation, the front reinforcing longitudinal beams 201, the front cabin lower cross beam 10, the integrally formed cross beam body 901 and the two side rear reinforcing longitudinal beams 202, and the cross beam sealing plate 902 of the present embodiment can all be formed by stamping, and the connection between them is realized by welding.

[0102] In addition, as a preferred implementation form, when the above-mentioned front reinforcing longitudinal beams 201 and rear reinforcing longitudinal beams 202 are provided on each side at the same time, the front reinforcing longitudinal beams 201 and rear reinforcing longitudinal beams 202 on each side of the present embodiment are arranged side by side between the front reinforcing longitudinal beams 201 and the rear reinforcing longitudinal beams 202 on the same side, and the distance between the front reinforcing longitudinal beams 201 and the rear reinforcing longitudinal beams 202 on each side is gradually reduced from bottom to top along the height direction of the whole vehicle. Figure 6

[0103] In this way, by gradually reducing the distance between the front reinforcing longitudinal beams 201 and the rear reinforcing longitudinal beams 202 from bottom to top, the front reinforcing longitudinal beams 201 and the rear reinforcing longitudinal beams 202 form a whole "herringbone" structure, thereby improving the reinforcing effect on the front shock tower 2 structure. According to experiments, in the present embodiment, by arranging the front reinforcing longitudinal beams 201 and the rear reinforcing longitudinal beams 202 on the side, the thickness of the front shock tower 2 can be reduced from 1mm to 0.7mm, and the overall weight can be reduced by 1.32kg.

[0104] ​In this embodiment, based on the arrangement of the front engine compartment upper cross beam 9, as a preferred implementation form, a connecting beam 22 is connected between the front engine compartment upper cross beam 9 and the front windshield lower cross beam 26. At this time, by arranging the connecting beam 22 between the front engine compartment upper cross beam 9 and the front windshield lower cross beam 26, not only can the rigidity of the front side of the front wall be further increased, but also the force transmission channel between the front shock tower 2 and the front windshield lower cross beam 26 can be increased, which helps to improve the safety of the vehicle.

[0105] As a preferred implementation form, the connecting beam 22 can be arranged in multiple, for example, including a middle beam body 2201 located in the middle, and side beam bodies 2202 arranged on both sides of the middle beam body 2201, and each side beam body 2202 is arranged close to the front shock tower 2 on the same side. In this way, the connecting beam 22 is arranged in multiple, which can play a better role in strengthening the rigidity and can increase more force transmission channels, which is conducive to the transmission of collision force. And making each side beam body 2202 close to the front shock tower 2 can improve the strengthening ability of the front shock tower 2 in the X direction (i.e. the front-rear direction of the vehicle), which helps to increase the structural strength of the front shock tower 2.

[0106] Notably, when the support cross beam 8 is arranged, it can be seen that the front engine compartment lower cross beam 10, the support cross beam 8, and the front engine compartment longitudinal beam 1 and the connecting bracket 7 on both sides of the embodiment can also be connected to form a ring structure. In this way, by connecting the front engine compartment lower cross beam 10, the support cross beam 8, and the front engine compartment longitudinal beam 1 and the connecting bracket 7 on both sides to form a ring structure, the ring structure is strong, which increases the overall rigidity of the middle position of the front engine compartment bottom, and is conducive to the transmission and dispersion of the collision force at the front end of the front engine compartment, thereby improving the collision safety of the vehicle.

[0107] As a preferred implementation form, continuing to combine Figure 8 As shown in FIG. 4, the front end frame 4 of the embodiment specifically includes side brackets 401 arranged on both sides, and an upper bracket 402 connected between the top ends of the two side brackets 401. The two side brackets 401 are connected between the energy absorption box 5 and the connecting bracket 7 on the same side, and the two diagonal beams 25 are connected to the upper bracket 402. At the same time, a lower cross beam 18 is also connected between the bottom ends of the two side brackets 401, and the lower cross beam 18 is arranged lower than the front bumper beam 6 in the height direction of the vehicle.

[0108] At this time, in specific implementation, the two ends of the cable-stayed beam 25 can be connected with the front end frame 4 and the front wheel cover side beam 3 through bolts. It can be understood that the front end frame 4 is arranged between the energy absorption box 5 and the connecting support 7, and the lower cross beam 18 is connected at the bottom of the front end frame 4, which is beneficial to the integrated arrangement of the front end structure of the vehicle body, and a new ring-shaped force transmission structure can be formed at the front end of the vehicle body through the front end frame 4 and the lower cross beam 18, which can improve the crash safety. In addition, it can also be understood that through the arrangement of the lower cross beam 18 lower than the front bumper beam 6, the pedestrian can be prevented from being rolled into the vehicle bottom in the event of a collision, thereby improving the pedestrian protection effect.

[0109] It is worth noting that in specific implementation, the lower cross beam 18 and the front end frame 4 of the present embodiment can be made of plastic, and for example, can be integrally injection molded by using PP (polypropylene) material or nylon material commonly used by those skilled in the art. In this way, not only the preparation of the two is facilitated, but also the lightweight design of the front engine compartment can be realized.

[0110] Continuing to combine Figure 9 As a preferred implementation form, the present embodiment can make the distance between the front ends of the front engine compartment longitudinal beams 1 along the left-right direction of the whole vehicle greater than the distance between the left and right ends of the front bumper beam 6 along the left-right direction of the whole vehicle, based on the outward bending of the front part of the two-side front engine compartment longitudinal beams 1.

[0111] In this way, the distance between the two ends of the front bumper beam 6 is less than the distance between the front ends of the two-side front engine compartment longitudinal beams 1, which not only enables the front engine compartment longitudinal beams 1 to participate in small overlap collision, but also has a higher participation degree compared with the front bumper beam 6. Therefore, it can utilize the effective transmission of the front engine compartment longitudinal beams 1 to the collision force, which is beneficial to improving the safety of small overlap collision and improving the safety quality of the whole vehicle.

[0112] In the present embodiment, as shown in Figure 9 and Figure 10 The rear ends of the two-side front engine compartment longitudinal beams 1 are respectively connected with the torsion boxes 12. The outer side of each side torsion box 12 is connected with the same side door sill beam 19 and A-pillar 23, and the inner side of each side torsion box 12 is connected with the same side middle tunnel reinforcement longitudinal beam 11. At the same time, the two-side torsion boxes 12 are also connected through the connecting piece 13, and the front windshield lower cross beam 26, the connecting piece 13, and the two-side A-pillars 23 and the torsion boxes 12 are connected to form a ring-shaped structure.

[0113] It can be understood that by connecting the two-side torsion boxes 12 through the connecting piece 13, the lateral stiffness of the whole vehicle body can be increased through the connecting effect of the connecting piece 13, and a through force transmission channel is added between the two-side torsion boxes, which is beneficial to the transmission of the collision force between the left and right sides of the vehicle body.

[0114] In a specific implementation, as a preferred implementation form, the two torsion boxes 12 can be arranged in a "person" shape, and have an outer box body 1201 and an inner box body 1202 connected together, each side outer box body 1201 is connected with the same side rocker beam 19, each side inner box body 1202 is connected with the same side middle channel reinforcing longitudinal beam 11, and the two side inner box bodies 1202 are connected through the connecting piece 13. At this time, the embodiment can make the collision force transmitted by the front engine compartment longitudinal beam 1 be transmitted to the left and right sides more evenly by making the torsion box 12 in a "person" shape, and it can also make the structural strength of the torsion box 12 be higher and not easy to deform, and can improve the application effect of the torsion box 12.

[0115] In the embodiment, each side outer box body 1201 is connected with the rear end of the same side front engine compartment longitudinal beam 1, and each side inner box body 1202 is connected on one side of the same side outer box body 1201, and the outer box body 1201 and the inner box body 1202 can be stamping formed sheet metal parts and connected by welding. In this way, the outer box body 1201 is connected with the front engine compartment longitudinal beam 1, and the inner box body 1202 is connected on one side of the outer box body 1201, which can facilitate the design and formation of the torsion box 12 as a whole, and also facilitate the arrangement of the torsion box 12 in the vehicle body.

[0116] In addition, in the embodiment, each side outer box body 1201 and inner box body 1202 are also buckled on the front wall connecting plate 16, and the outer box body 1201 and the inner box body 1202 form a cavity with the front wall connecting plate 16. Therefore, by forming a cavity between the inner and outer box bodies and the front wall connecting plate 16, the structural strength of the cavity can be utilized to ensure the structural strength of the position of the inner and outer box bodies, so as to ensure the application effect.

[0117] It is worth noting that the front wall connecting plate 16 is connected between the front wall 14 and the front floor 17, and the front part of the middle channel 15 and the middle channel reinforcing longitudinal beams 11 on the left and right sides thereof are also connected on the front wall connecting plate 16 and connected with the bottom end of the front wall 14. Moreover, the two middle channel reinforcing longitudinal beams 11 are located at the bottom of the middle channel 15 and are separately arranged on the left and right sides of the middle channel 15, and each middle channel reinforcing longitudinal beam 11 is also arranged along the front-rear direction of the vehicle, like the middle channel 15.

[0118] It can be understood that in addition to forming a cavity between the outer box body 1201 and the inner box body 1202 and the front wall connecting plate 16, it is also possible to form a cavity between only one of the inner and outer box bodies and the front wall connecting plate 16 in a specific implementation.

[0119] In the embodiment, as a preferred implementation form, the connecting member 13 can be a pipe beam. At this time, the connecting member 13 is made of a pipe beam, which is convenient for manufacturing and can ensure the connecting strength of the connecting member 13. Meanwhile, in specific implementation, in order to facilitate the connection of the two ends of the connecting member 13 with the inner box body 1202, the two ends of the connecting member 13 in the pipe beam structure can be flattened, and the inner box body 1202 is fixed and connected together by using bolts.

[0120] It should be noted that in addition to the pipe beam, the connecting member 13 of the embodiment can also adopt other conventional beam structures, as long as it can realize the connection between the two inner box bodies 1202 and can ensure the required connecting strength.

[0121] Continuing to combine the embodiments shown in Figure 12 and Figure 13 , as a preferred implementation form, the embodiment is provided with a lower force transmission beam 20 on one side of the front engine compartment longitudinal beam 1 on one side of the front engine compartment. The lower force transmission beam 20 is connected to the side of the front apron 14 facing the vehicle head, and one end of the lower force transmission beam 20 is connected to the same side of the front engine compartment longitudinal beam 1, and the other end of the lower force transmission beam 20 is connected to the same side of the middle channel reinforcing longitudinal beam 11.

[0122] At this time, by providing the lower force transmission beam 20 connecting the front engine compartment longitudinal beam 1 and the middle channel reinforcing longitudinal beam 11, the connecting strength between the front engine compartment longitudinal beam 1 and the middle channel 15 can be increased, and a new force transmission channel can be added between the front engine compartment longitudinal beam 1 and the middle channel 15, which is helpful for the transmission of collision force between them.

[0123] In specific implementation, as a preferred implementation form, a cavity is formed between the lower force transmission beam 20, the front apron 14, and the same side of the front engine compartment longitudinal beam 1. In this way, by forming a cavity between the lower force transmission beam 20, the front apron 14, and the front engine compartment longitudinal beam 1, the structural strength of the position of the lower force transmission beam 20 can be improved by using the large structural strength of the cavity, and the application effect is guaranteed.

[0124] On the basis of forming a cavity in the lower force transmission beam 20, as a preferred implementation form, the width of the end of the lower force transmission beam 20 connected to the front engine compartment longitudinal beam 1 can be greater than the width of the end of the lower force transmission beam 20 connected to the middle channel reinforcing longitudinal beam 11, and the side of the lower force transmission beam 20 facing the vehicle head is formed with a smooth transition arc surface 18a.

[0125] The width of the lower force transmission beam 20 is the width of the lower force transmission beam 20 along the front-rear direction of the vehicle. By making the width of the end of the lower force transmission beam 20 connected to the front engine compartment longitudinal beam 1 larger and forming a smooth transition profile 18a in front of the end, the cross section of the lower force transmission beam 20 can avoid sharp changes, which can cause poor force transmission during a collision, and the stability of the connection between the lower force transmission beam 20 and the front engine compartment longitudinal beam 1 can be improved. Of course, it should be noted that when the lower force transmission beam 20 has other beam structures and does not form the cavity as described above, the width of the end of the lower force transmission beam 20 connected to the front engine compartment longitudinal beam 1 can also be made larger to have the effects as described above.

[0126] In the embodiment, further, as a preferred implementation form, each side lower force transmission beam 20 is also connected to the front end of the same side middle tunnel reinforcing longitudinal beam 11, and a connecting plate 21 is connected between the front ends of the two side middle tunnel reinforcing longitudinal beams 11. The connecting plate 21 is a stamped plate and is connected to the two side middle tunnel reinforcing longitudinal beams 11 by welding. It can be understood that the two side middle tunnel reinforcing longitudinal beams 11 are connected by the connecting plate 21, which can increase the rigidity of the front end of the middle tunnel 15 by the connecting effect of the connecting plate 21, and can form a force transmission channel between the two side middle tunnel reinforcing longitudinal beams 11, which is helpful for the transmission of collision force between the left and right sides of the vehicle body.

[0127] As shown in Figure 14 and Figure 15 , in the embodiment, as a preferred implementation form, based on the outward bending of the front part of the front engine compartment longitudinal beam 1, the front end of each side front wheel house side beam 3 can be connected to the side of the same side front engine compartment longitudinal beam 1 facing the vehicle tail, which is conducive to the transmission of collision force along the front wheel house side beam 3.

[0128] In addition, as a preferred implementation form, as shown in Figure 14 , Figure 15 , the rear end of each side front wheel house side beam 3 in the embodiment has a first connecting arm 301 and a second connecting arm 302 arranged in a forked shape, the rear ends of the first connecting arm 301 and the second connecting arm 302 are connected to the A-pillar 23, and a crush cavity Q is formed between the first connecting arm 301, the second connecting arm 302 and the A-pillar 23.

[0129] By providing the first connecting arm 301 and the second connecting arm 302 at the rear end of the front wheel house side beam 3 and forming the crush cavity Q, not only the lateral support of the A-pillar 23 to the front wheel house side beam 3 can be increased, but also the problem of excessive material accumulation in the A-pillar 23 area and excessive intrusion of the A-pillar 23 during a collision can be avoided, and the safety of the collision can be improved.

[0130] Moreover, from the whole vehicle left-right direction, the first connecting arm 301 and the second connecting arm 302 are in V shape, and the A pillar 23 is arranged along the whole vehicle up-down direction, so that a crush cavity Q formed among the first connecting arm 301, the second connecting arm 302 and the A pillar 23 is in triangular shape. In this way, the structural strength of the position where the front wheel cover side beam 3 and the A pillar 23 are connected can be ensured by using the characteristic that the triangular structure has high strength, and the transmission effect of the collision force between the two can be ensured. In addition, when the collision force is transmitted, part of the collision force at the front wheel cover side beam 3 is transmitted upwards to the A pillar 23, and the other part is transmitted downwards along the A pillar 23 to the position of the rocker beam, so that the collision force is dispersed.

[0131] Continuing as in Figure 16 , Figure 17 , and in conjunction with what is shown in Figure 18 , the vehicle body front structure of the embodiment further includes a front subframe 24 located at the bottom of the front engine compartment. The mounting points on the front left and right sides of the front subframe 24 are mounted on the two side connecting brackets 7, and the front part of the front subframe 24 is provided with a subframe front cross beam 2402 located between the two mounting points, and the above-mentioned subframe front cross beam 2402 and the front end frame 4 are also connected to form a ring structure through the two side connecting brackets 7.

[0132] At this time, by setting the mounting positions on the front two sides of the front subframe to the connecting brackets 7, and connecting the subframe front cross beam 2402 and the front end frame 4 to form a ring structure through the two side connecting brackets 7, the overall stiffness of the front part of the vehicle can be increased by using the characteristic that the ring structure has high strength, and the transmission and dispersion of the collision force are facilitated.

[0133] In detail, similar to the existing subframe structure, the front subframe of the embodiment has subframe longitudinal beams 2401 arranged on the left and right sides, and cavities are formed in each subframe longitudinal beam 2401 to improve the strength and force transmission effect of the subframe longitudinal beam 24. At the same time, the above-mentioned subframe front cross beam 2402, the subframe middle cross beam 2403 and the subframe rear cross beam 2404 located behind the subframe middle cross beam 2403 are also connected between the two subframe longitudinal beams 2401.

[0134] In addition, the middle part of the front subframe 24 of the embodiment is also provided with mounting arms 2405 connected with the two side front engine compartment longitudinal beams 1 respectively. The above-mentioned subframe middle cross beam 2403 is correspondingly arranged between the two side mounting arms 2405, and each side mounting arm 2405 is arranged in connection with the same side rear reinforcing longitudinal beam 202 in the whole vehicle height direction, and the front engine compartment upper cross beam 9, the subframe middle cross beam 2403, and the two side rear reinforcing longitudinal beams 202 and the front engine compartment longitudinal beams 1 are connected to form a ring structure.

[0135] By connecting the above front cabin upper cross beam 9, the auxiliary frame middle cross beam 2403, and the two side rear reinforcing longitudinal beams 202 and the front cabin longitudinal beam 1 to form a ring structure, the embodiment can utilize the characteristics of the large strength of the ring structure, further increase the overall strength of the front part of the vehicle body, and be beneficial to the dispersion of the collision force at the front part, thereby improving the safety of the vehicle.

[0136] It should be noted that the connection between each side mounting arm 2405 and the same side rear reinforcing longitudinal beam 202 is at least partially overlapped in the projection of the vehicle height direction. In addition, in specific implementation, the connection between the front part of the front auxiliary frame 24 and the connecting bracket 7 is specifically the connection between the front end of each side auxiliary frame longitudinal beam 2401 and the same side connecting bracket 7. And it can be welded to a box-shaped mounting seat at the bottom of the connecting bracket 7, and a connecting sleeve is arranged at the front end of the auxiliary frame longitudinal beam 2401, so that the connection is achieved through connecting bolts.

[0137] Similarly, the connection between each mounting arm 2405 and the front cabin longitudinal beam 1 can be, for example, a mounting bracket with a threaded sleeve arranged inside the front cabin longitudinal beam 1, and the top end of the mounting arm 2405 is connected to the threaded sleeve through connecting bolts.

[0138] The front part structure of the vehicle body of the embodiment, by being arranged as above, can form multiple ring structures at the front part of the vehicle body, so as to not only utilize the characteristics of the large strength of the ring structure to increase the overall stiffness of the front cabin position of the front part of the vehicle body, but also form multiple through force transmission channels at the front part of the vehicle body, which is beneficial to the dispersion of the collision force at the front cabin position, and further helps to improve the collision safety of the vehicle.

[0139] Embodiment two

[0140] The embodiment relates to a vehicle provided with the front part structure of the vehicle body in the embodiment one. The vehicle of the embodiment increases the overall stiffness of the front cabin position of the front part of the vehicle body by arranging the front part structure of the vehicle body in the embodiment one, which is beneficial to the dispersion of the collision force at the front cabin position, and helps to improve the collision safety of the vehicle.

[0141] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A vehicle body front structure, characterized by comprising: a front engine compartment; the front engine compartment having front engine compartment longitudinal beams (1) arranged on left and right sides, front wheelhouse side beams (3) arranged on outer sides of the front engine compartment longitudinal beams (1), and a front end frame (4) arranged between bent portions of the front engine compartment longitudinal beams (1) on the left and right sides, the front engine compartment further having front shock towers (2) respectively connected between the front engine compartment longitudinal beams (1) and the front wheelhouse side beams (3) on the left and right sides; the front portions of the front engine compartment longitudinal beams (1) on the left and right sides are each bent toward the outside of the vehicle to form an overhang (la), and the front ends of the front wheelhouse side beams (3) on the left and right sides are connected to the overhangs (la) on the left and right sides; the rear ends of the front wheelhouse side beams (3) on the left and right sides are connected to a front windshield lower cross beam (26), and the front wheelhouse side beams (3) on the left and right sides and the front end frame (4) are each provided with a cable beam (25) arranged therebetween, and the front end frame (4), the front windshield lower cross beam (26), and the front wheelhouse side beams (3) on the left and right sides and the cable beams (25) on the left and right sides are connected to form a ring structure; the bent portions of the front engine compartment longitudinal beams (1) on the left and right sides are each connected to a connecting bracket (7), the side portions of the front shock towers (2) on the left and right sides are each provided with a front reinforcing longitudinal beam (201) arranged along the height direction of the front shock tower (2), the bottom ends of the front reinforcing longitudinal beams (201) on the left and right sides are connected together by a front engine compartment lower cross beam (10) arranged between the front engine compartment longitudinal beams (1) on the left and right sides, and the connecting brackets (7) on the left and right sides are connected by a support cross beam (8), and the front engine compartment lower cross beam (10), the support cross beam (8), and the front engine compartment longitudinal beams (1) on the left and right sides and the connecting brackets (7) on the left and right sides are connected to form a ring structure. 2.The vehicle body front structure according to claim 1, characterized in that: the front engine compartment further has front crash beam assemblies connected to the connecting brackets (7) on the left and right sides; the front end frame (4) is connected between the front crash beam assemblies and the connecting brackets (7) on the left and right sides; and the front engine compartment longitudinal beams (1) on the left and right sides, the front wheelhouse side beams (3) on the left and right sides, the cable beams (25) on the left and right sides, the front end frame (4), and the connecting brackets (7) on the left and right sides are connected to form a ring structure. 3.The vehicle body front structure according to claim 2, characterized in that: the front crash beam assemblies each include an energy absorption box (5) connected to the connecting bracket (7) on the left or right side, and a front crash beam (6) connected to the energy absorption box (5) on the left or right side; the front end frame (4) includes side brackets (401) arranged on the left and right sides, and an upper bracket (402) connected between the top ends of the side brackets (401) on the left and right sides; the side brackets (401) on the left and right sides are each connected between the energy absorption box (5) on the left or right side and the connecting bracket (7) on the left or right side, and the cable beams (25) on the left and right sides are connected to the upper bracket (402). 4.The vehicle body front structure according to claim 3, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The bottom ends of the side supports (401) are connected with a lower cross beam (18), which is arranged lower than the front bumper beam (6) in the vehicle height direction; and / or, The distance between the front ends of the front engine compartment longitudinal beams (1) in the left-right direction of the vehicle is greater than the distance between the left and right ends of the front bumper beam (6) in the left-right direction of the vehicle.

5. The vehicle body front structure according to claim 2, characterized in that: The rear end of each side front wheel cover side beam (3) is provided with a first connecting arm (301) and a second connecting arm (302) arranged in a diverging manner, the first connecting arm (301) is connected with the front windshield lower cross beam (26), and the rear end of each of the first connecting arm (301) and the second connecting arm (302) is connected with the A-pillar (23) on the same side, and a crush cavity (Q) is formed between the first connecting arm (301), the second connecting arm (302) and the A-pillar (23).

6. The vehicle body front structure according to claim 2, characterized in that: Each side of the front shock tower (2) is respectively provided with a rear reinforcing longitudinal beam (202); Each rear reinforcing longitudinal beam (202) is arranged side by side behind the front reinforcing longitudinal beam (201) on the same side, and the bottom end of each rear reinforcing longitudinal beam (202) is connected to the front engine compartment longitudinal beam (1) on the same side, and the top end of each rear reinforcing longitudinal beam (202) is connected together through the front engine compartment upper cross beam (9) arranged between the top of each front shock tower (2).

7. The vehicle body front structure according to claim 6, characterized in that: From bottom to top in the vehicle height direction, the distance between each side of the front reinforcing longitudinal beam (201) and the rear reinforcing longitudinal beam (202) is gradually reduced; and / or, The front engine compartment upper cross beam (9) and the front windshield lower cross beam (26) are connected with a connecting beam (22), and the connecting beam (22) at least includes a side beam body (2202) arranged close to each front shock tower (2) on the left and right sides.

8. The vehicle body front structure according to claim 6, characterized in that: It further comprises a front subframe (24) located at the bottom of the front engine compartment; The mounting points on the front part of the left and right sides of the front subframe (24) are mounted on the connecting supports (7) on the left and right sides, and the front part of the front subframe (24) is provided with a subframe front cross beam (2402) located between the mounting points on the left and right sides; The subframe front cross beam (2402) and the front end frame (4) are connected to form a ring structure through the connecting supports (7) on the left and right sides.

9. The vehicle body front structure according to claim 8, characterized in that: The middle part of the front subframe (24) is provided with mounting arms (2405) connected with the front engine compartment longitudinal beams (1) on the left and right sides, and a subframe middle cross beam (2403) is arranged between the mounting arms (2405) on the left and right sides. The mounting arms (2405) on each side are connected to the rear longitudinal reinforcement (202) on the same side in the vehicle height direction, and the front engine compartment upper cross beam (9), the middle cross beam (2403) of the subframe, and the rear longitudinal reinforcement (202) and the front engine compartment longitudinal beam (1) on both sides are connected to form a ring structure.

10. The vehicle body front structure according to claim 8, characterized in that: The front engine compartment longitudinal beam (1) on each side is provided with a lower force transmission beam (20) on one side in the front engine compartment; The lower force transmission beam (20) on each side is connected to the front apron (14) on the side facing the front, and one end of the lower force transmission beam (20) on each side is connected to the front engine compartment longitudinal beam (1) on the same side, and the other end of the lower force transmission beam (20) on each side is connected to the middle tunnel longitudinal reinforcement (11) on the same side.

11. The vehicle body front structure according to claim 10, characterized in that: The lower force transmission beam (20) on each side is connected to the front end of the middle tunnel longitudinal reinforcement (11) on the same side, and a connecting plate (21) is connected between the front ends of the middle tunnel longitudinal reinforcements (11) on both sides.

12. The vehicle body front structure according to any one of claims 1 to 11, characterized in that: The rear end of the front engine compartment longitudinal beam (1) on each side is connected to a torsion box (12); The outer side of the torsion box (12) on each side is connected to the rocker beam (19) and the A-pillar (23) on the same side, and the inner side of the torsion box (12) on each side is connected to the middle tunnel longitudinal reinforcement (11) on the same side; The torsion boxes (12) on both sides are connected by a connecting member (13), and the front windshield lower cross beam (26), the connecting member (13), and the A-pillar (23) and the torsion box (12) on both sides are connected to form a ring structure.

13. The vehicle body front structure according to claim 12, characterized in that: The torsion box (12) on each side is in the shape of a "person” and has an outer box body (1201) and an inner box body (1202) connected together, the outer box body (1201) on each side is connected to the rocker beam (19) on the same side, the inner box body (1202) on each side is connected to the middle tunnel longitudinal reinforcement (11) on the same side, and the inner box bodies (1202) on both sides are connected by the connecting member (13); and / or, The connecting member (13) is a tube beam.

14. A vehicle, characterized in that: The vehicle is provided with the vehicle body front structure according to any one of claims 1 to 13.

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