Front cabin force transmission system and vehicle

Abstract

The application provides a front engine compartment force transmission system and a vehicle. The front engine compartment force transmission system comprises front engine compartment longitudinal beams arranged on left and right sides, and front shock towers connected to the front engine compartment longitudinal beams on the left and right sides. The front parts of the front engine compartment longitudinal beams on the left and right sides are bent to the outside of the vehicle in the left-right direction of the vehicle, and connecting brackets are connected to the bent parts of the front engine compartment longitudinal beams on the left and right sides. A support cross beam is connected between the connecting brackets on the left and right sides. The left and right sides of the front shock towers are respectively provided with front reinforcing longitudinal beams arranged along the height direction of the front shock towers. The bottom ends of the front reinforcing longitudinal beams on the left and right sides are connected together through a front engine compartment lower cross beam arranged between the front engine compartment longitudinal beams on the left and right sides. The front engine compartment force transmission system can increase the overall rigidity of the bottom part of the front engine compartment, is beneficial to the transmission and dispersion of the collision force at the front end of the front engine compartment, and can improve the safety of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle body, in particular to a front engine compartment force transmission system. BACKGROUND

[0002] The front engine compartment structure is an important part of the front structure of a vehicle, and it is the installation base of important components such as front-mounted power assembly, air conditioner compressor, radiator, etc. At the same time, the front engine compartment structure can also bear the collision force and play an energy-absorbing role when the vehicle is subjected to a frontal collision. Therefore, optimizing the front engine compartment structure to improve the collision safety is an important link in the design of vehicle safety performance.

[0003] However, the existing front engine compartment structure has a single transmission and dispersion path of the collision force in the front engine compartment structure when the vehicle is subjected to a frontal collision. The collision force is usually directly transmitted to the front engine compartment longitudinal beam through the front crash beam assembly, and then transmitted rearward by the front engine compartment longitudinal beam. This results in poor force transmission and dispersion effect, and it is difficult to effectively improve the safety of the whole vehicle. SUMMARY

[0004] Therefore, the present application aims to provide a front engine compartment force transmission system to improve the strength of the front engine compartment structure and improve the safety of the whole vehicle.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] A front engine compartment force transmission system comprises front engine compartment longitudinal beams arranged on the left and right sides, and front shock towers connected to the front engine compartment longitudinal beams on each side;

[0007] The front parts of the front engine compartment longitudinal beams on both sides are bent outward in the left-right direction of the vehicle, and connecting brackets are connected to the bent parts of each front engine compartment longitudinal beam. Support cross beams are connected between the connecting brackets on both sides;

[0008] The side parts of the front shock towers on both sides are respectively provided with front reinforcing longitudinal beams arranged along the height direction of the front shock towers. The bottom ends of the front reinforcing longitudinal beams on both sides are connected together by a front engine compartment lower cross beam arranged between the front engine compartment longitudinal beams on both sides. The front engine compartment lower cross beam, the support cross beam, and the front engine compartment longitudinal beams and the connecting brackets on both sides are connected to form a ring-shaped structure.

[0009] Further, the front engine compartment force transmission system further comprises a front crash beam assembly connected to the connecting brackets on both sides;

[0010] The front crash beam assembly comprises energy-absorbing boxes connected to the connecting brackets on both sides, and a front crash beam connected to the energy-absorbing boxes on both sides.

[0011] The front anti-collision beam, the support cross beam, and the energy absorption boxes and the connecting supports on both sides are connected to form a ring structure.

[0012] Further, the distance between the front ends of the front engine compartment longitudinal beams on both sides in the left-right direction of the whole 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 whole vehicle.

[0013] Further, the front end frame is further included.

[0014] The front end frame includes side supports arranged on the left and right sides, and an upper support connected between the top ends of the side supports on both sides.

[0015] The side supports on both sides are connected between the energy absorption boxes and the connecting supports on the same side, and the bottom ends of the side supports on both sides are connected by a lower cross beam, which is lower than the front anti-collision beam in the height direction of the whole vehicle.

[0016] Further, the front engine compartment longitudinal beam includes a longitudinal beam inner plate and a longitudinal beam outer plate that are connected together, the front parts of the longitudinal beam inner plate and the longitudinal beam outer plate are bent outward, and the longitudinal beam inner plate and the longitudinal beam outer plate are integrally formed; and / or,

[0017] From the top-down direction of the whole vehicle, the connecting supports on both sides are triangular.

[0018] Further, the torsion boxes are further included, which are connected to the rear ends of the front engine compartment longitudinal beams on both sides.

[0019] One side of each side torsion box is connected to the rocker beam on the same side, the other side of each side torsion box is connected to the middle channel reinforcing longitudinal beam on the same side, and the torsion boxes on both sides are connected by a connecting piece.

[0020] The front engine compartment lower cross beam, the connecting piece, and the front engine compartment longitudinal beams and the torsion boxes on both sides are connected to form a ring structure.

[0021] Further, the torsion boxes on both sides are in the shape of a "person" and have an outer box body and an inner box body connected together.

[0022] Each side outer box body is connected to the rocker beam on the same side, each side inner box body is connected to the middle channel reinforcing longitudinal beam on the same side, and the inner box bodies on both sides are connected by the connecting piece.

[0023] Further, each side outer box body and inner box body is arranged on the front wall connecting plate, and the outer box body, the inner box body, and the front wall connecting plate form a cavity therebetween; and / or,

[0024] The connecting piece is a pipe beam.

[0025] Further, the lower force transmission beams are arranged on the side of the front engine compartment longitudinal beams inside the front engine compartment.

[0026] The lower force transmission beams are connected to the side of the front wall towards the vehicle head, and one end of the lower force transmission beams is connected to the front engine compartment longitudinal beams on the same side, and the other end of the lower force transmission beams is connected to the middle channel reinforcing longitudinal beams on the same side.

[0027] Further, the width of the end of the lower force transmission beams connected to the front engine compartment longitudinal beams is greater than the width of the end of the lower force transmission beams connected to the middle channel reinforcing longitudinal beams, and the side of the lower force transmission beams towards the vehicle head is formed into a smooth transition arc surface.

[0028] The width is the width of the lower force transmission beams in the front and rear directions of the vehicle.

[0029] Further, the lower force transmission beams are connected to the front ends of the middle channel reinforcing longitudinal beams on the same side, and the front ends of the middle channel reinforcing longitudinal beams on both sides are connected by a connecting plate.

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

[0031] The front engine compartment force transmission system can make the front engine compartment longitudinal beams better participate in small overlap collision, can utilize the effective transmission of the front engine compartment longitudinal beams to the collision force, and improve the safety of small overlap collision; at the same time, the setting of the front reinforcing longitudinal beams can improve the structural strength of the shock tower position, is beneficial to reducing the thickness of the shock tower, realizes weight reduction, the setting of the front engine compartment lower cross beam can form a transverse connection between the front shock towers on both sides, can improve the Y-direction stiffness of the front part of the vehicle body; and the front engine compartment lower cross beam, the support cross beam, and the front engine compartment longitudinal beams and the connecting brackets on both sides are connected to form a ring structure, the characteristics of the large strength of the ring structure are utilized to increase the overall stiffness of the front end of the front engine compartment position, and are beneficial to the transmission and dispersion of the collision force at the front end of the front engine compartment, so as to improve the collision safety of the vehicle.

[0032] In addition, the front crash beam, the support cross beam, and the energy absorption boxes and the connecting brackets on both sides are connected to form a ring structure, the characteristics of the large strength of the ring structure are utilized to increase the overall stiffness of the front end of the front engine compartment position, and are beneficial to the transmission and dispersion of the collision force at the front end of the front engine compartment, so as to further improve the collision safety. The distance between the two ends of the front crash beam is less than the distance between the front ends of the front engine compartment longitudinal beams on both sides, not only can make the front engine compartment longitudinal beams participate in small overlap collision, but also have higher participation compared with the front crash beam, so as to utilize the effective transmission of the front engine compartment longitudinal beams to the collision force, and improve the safety of small overlap collision and the safety quality of the vehicle.

[0033] The front end frame is arranged between the energy absorption box and the connecting support, and the lower cross beam is connected at the bottom of the front end frame, 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 and the lower cross beam, so that the crash safety can be improved. The inner plate and the outer plate of the front engine compartment longitudinal beam are integrally formed, which can ensure the stability of the front engine compartment longitudinal beam structure. The connecting support is triangular, which can utilize the characteristics of high strength of the triangular structure to ensure the structural strength of the connecting support and ensure its use effect.

[0034] Secondly, the two side torsion boxes are connected through the connecting piece, which can increase the lateral stiffness of the vehicle body as a whole through the connecting effect of the connecting piece, and a through force transmission channel is formed between the two side torsion boxes, which is beneficial to the transmission of the crash force between the left and right sides of the vehicle body. At the same time, the front engine compartment lower cross beam, the connecting piece, and the front engine compartment longitudinal beams on both sides and the torsion boxes connected to form a ring-shaped structure can also increase the overall stiffness of the rear end of the bottom of the front engine compartment, which helps to improve the structural safety of the front engine compartment. The torsion box is in the shape of a "person", which can make the crash force transmitted by the front engine compartment longitudinal beam more evenly transmitted to the left and right sides, and the structural strength of the torsion box is also higher, which is not easy to deform, and the application effect of the torsion box can be improved.

[0035] In addition, the cavity is formed between the inner and outer box bodies and the front wall connecting plate, which can utilize the characteristics of high strength of the cavity structure to ensure the structural strength of the position of the inner and outer box bodies and ensure its application effect. The connecting piece is a pipe beam, which can facilitate its preparation, and can also ensure the connecting strength of the connecting piece. By arranging the lower force transmission beam connected with the front engine compartment longitudinal beam and the middle channel reinforcing longitudinal beam, the connecting 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 crash force between the two, and is beneficial to improve the safety of the whole vehicle.

[0036] The end connected with the front engine compartment longitudinal beam of the lower force transmission beam has a larger width, and a smooth transition profile is formed on the front side, which can avoid the sharp change of the cross section of the lower force transmission beam, causing poor transmission of the crash force, and can also increase the stability of the connection part of the lower force transmission beam and the front engine compartment longitudinal beam. The two middle channel reinforcing longitudinal beams are connected through the connecting plate, which can increase the stiffness of the front end position of the middle channel through the connecting effect of the connecting plate, and a force transmission channel can also be formed between the two middle channel reinforcing longitudinal beams, which is helpful for the transmission of the crash force between the left and right sides of the vehicle body.

[0037] Another object of the present application is to provide a vehicle provided with the front engine compartment force transmission system as described above.

[0038] The vehicle described in the present application has the same beneficial effects as the above-mentioned front engine compartment force transmission system, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which form a part of this application, are intended to provide further understanding of the application and are incorporated herein in their entirety, and they show

[0040] Figure 1 A schematic view of the front engine compartment in the vehicle body according to an embodiment of the present application;

[0041] Figure 2 A schematic view of the front engine compartment according to an embodiment of the present application; Figure 1

[0042] Figure 3 A schematic view of the front engine compartment according to an embodiment of the present application;

[0043] Figure 4 A schematic view of the connecting bracket according to an embodiment of the present application;

[0044] Figure 5 A schematic view of the front engine compartment force transmission system according to an embodiment of the present application;

[0045] Figure 6 A schematic view of the front engine compartment longitudinal beam according to an embodiment of the present application;

[0046] Figure 7 A schematic view of the front engine compartment lower cross beam according to an embodiment of the present application;

[0047] Figure 8 A schematic view of the front end frame according to an embodiment of the present application;

[0048] Figure 9 A schematic view of the distance between the front ends of the two front engine compartment longitudinal beams and the distance between the left and right ends of the front bumper beam according to an embodiment of the present application;

[0049] Figure 10 A schematic view of the torsion box according to an embodiment of the present application;

[0050] Figure 11 A schematic view of the connecting member according to an embodiment of the present application;

[0051] Figure 12 A schematic view of the lower force transmission beam according to an embodiment of the present application;

[0052] Figure 13 A schematic view of the lower force transmission beam according to an embodiment of the present application;

[0053] Figure 14 A schematic view of the annular structure formed in the front engine compartment force transmission system according to an embodiment of the present application;

[0054] BRIEF DESCRIPTION OF THE DRAWINGS​

[0055] 1. front engine bay longitudinal beam; 2. front shock tower; 3. front wheelhouse side beam; 4. front end frame; 5. energy absorption box; 6. front crash beam; 7. connecting bracket; 8. support cross beam; 9. A pillar; 10. front engine bay lower cross beam; 11. middle tunnel reinforcement longitudinal beam; 12. torsion box; 13. connecting piece; 14. front bulkhead; 15. middle tunnel; 16. front bulkhead connecting plate; 17. front floor; 18. lower cross beam; 19. rocker beam; 20. lower force transmission beam; 21. connecting plate;

[0056] 101. longitudinal beam inner plate; 102. longitudinal beam outer plate; 1a. overhanging section; 201. front reinforcement longitudinal beam; 401. side bracket; 402. upper bracket; 1201. outer box body; 1202. inner box body; 20a. arc-shaped profile. DETAILED DESCRIPTION

[0057] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0058] In the description of the present application, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer" and the like appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, if terms such as "first", "second" and the like appear, they are also only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0059] In addition, in the description of the present application, unless otherwise explicitly limited, the connecting structure between cooperating components can be connected by conventional connection structure in the art. Moreover, the terms "mounting", "connecting", "connection" and "connecting piece" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in combination with the specific circumstances.

[0060] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0061] Embodiment One

[0062] The present embodiment relates to a front engine bay force transmission system, which comprises front engine bay longitudinal beams 1 arranged on the left and right sides, and front shock towers 2 connected to the front engine bay longitudinal beams 1 on each side. Figures 1 to 5 , and in combination with Figure 14 As shown in the drawings, the front engine bay force transmission system comprises front engine bay longitudinal beams 1 arranged on the left and right sides, and front shock towers 2 connected to the front engine bay longitudinal beams 1 on each side.

[0063] The front part of each of the two side front engine compartment longitudinal beams 1 is bent outwards in the left-right direction of the vehicle to form an overhanging section la, and a connecting bracket 7 is connected at the bent part of each front engine compartment longitudinal beam 1, and a support cross beam 8 is connected between the two connecting brackets 7. The side part of each of the two side front shock towers 2 is also provided with a front reinforcing longitudinal beam 201, and each front reinforcing longitudinal beam 201 is arranged along the height direction of the front shock tower 2, and the bottom ends of the two front reinforcing longitudinal beams 201 are connected together by a front engine compartment lower cross beam 10 arranged between the two front engine compartment longitudinal beams 1. The front engine compartment lower cross beam 10, the support cross beam 8, and the two front engine compartment longitudinal beams 1 and the connecting brackets 7 are connected to form a ring structure.

[0064] At this time, by bending the front part of the front engine compartment longitudinal beam 1 outwards, the present embodiment can make the front engine compartment longitudinal beam 1 better participate in a small overlap collision, and can utilize the effective transmission of the collision force by the front engine compartment longitudinal beam 1 to improve the safety of small overlap collision.

[0065] At the same time, by providing the front reinforcing longitudinal beam 201, the structural strength of the position of the front shock tower 2 can be improved, which is beneficial to reducing the thickness of the shock tower and achieving weight reduction. By providing the front engine compartment lower cross beam 10, transverse connection can be formed between the two front shock towers 2, which can improve the Y-direction stiffness of the front part of the vehicle body. By connecting the front engine compartment lower cross beam 10, the support cross beam 8, and the two front engine compartment longitudinal beams 1 and the connecting brackets 7 to form a ring structure, the ring structure can utilize the characteristics of large strength to increase the overall stiffness of the position of the front engine compartment bottom, and is beneficial to the transmission and dispersion of the collision force at the front end of the front engine compartment.

[0066] Specifically, as a preferred implementation form, referring to Figure 6 As shown in the figure, the front engine compartment longitudinal beam 1 of the present 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 longitudinal beam 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 part of the longitudinal beam inner plate 101 and the longitudinal beam outer plate 102 is bent outwards to form the overhanging section la, thereby realizing the bending arrangement of the front part of the front engine compartment longitudinal beam 1.

[0067] Here, by integrally forming the longitudinal beam inner plate 101 and the longitudinal beam outer plate 102 in the front engine compartment longitudinal beam 1, 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 specific design, the distance between the bent part of each side front engine compartment longitudinal beam 1 and the wheel envelope of the same side front wheel should be set to be more than 10mm. In this way, based on the distance between the bent part 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.

[0068] In actual design, the distance between the bent part of the front engine compartment longitudinal beam 1 on each side and the wheel cover of the front wheel on the same side can be specifically set to 10mm or 12mm, etc., as long as it is ensured that there is no interference between the front engine compartment longitudinal beam 1 and the front wheel.

[0069] As a preferred implementation method, in specific implementation, it should be combined with Figure 7 As shown in the diagram, the lower crossbeam 10 of the front nacelle in this embodiment is also connected between the tops of the longitudinal beams 1 of the front nacelles on both sides. Simultaneously, the front reinforcing longitudinal beams 201 on both sides are fastened to the corresponding front shock absorber towers 2, forming a front longitudinal beam cavity with the front shock absorber towers 2. At this time, the formation of the longitudinal beam cavity between the front reinforcing longitudinal beam 201 and the front shock absorber tower 2 allows for the utilization of the cavity's high structural strength, thereby improving the structural strength of the front reinforcing longitudinal beam 201 itself.

[0070] Furthermore, as a preferred embodiment, the front engine compartment lower crossbeam 10 of this embodiment has an "n"-shaped cross section, thereby forming a lower crossbeam cavity inside the front engine compartment lower crossbeam 10. The bottom of the lower crossbeam cavity is open, and both ends of the lower crossbeam cavity are also connected through to the front longitudinal beam cavities on both sides. In this way, by adopting an "n"-shaped cross section for the front engine compartment lower crossbeam 10 and forming a lower crossbeam cavity that communicates with the longitudinal beam cavities, the structural strength of the front engine compartment lower crossbeam 10 itself can be increased, and the reliability of the connection between the front engine compartment lower crossbeam 10 and the front reinforcing longitudinal beams 201 on both sides can be ensured, as well as the continuity of the force transmission channel formed between them, thereby helping to ensure the structural reinforcement effect and the collision force transmission effect.

[0071] Still by Figures 1 to 5 and combined Figure 7 As shown, the front cabin force transmission system in this embodiment also includes a front bumper beam assembly connected to the connecting brackets 7 on both sides. Specifically, the front bumper beam assembly includes energy-absorbing boxes 5 connected to the connecting brackets 7 on both sides, and a front bumper beam 6 connected to the energy-absorbing boxes 5 on both sides. The front bumper beam 6, the supporting crossbeam 8, and the energy-absorbing boxes 5 and connecting brackets 7 on both sides are also connected to form a ring structure. In this way, by connecting the front bumper beam 6, the supporting crossbeam 8, and the energy-absorbing boxes 5 and connecting brackets 7 on both sides to form a ring structure, the high strength of the ring structure can be utilized to increase the overall rigidity of the front end of the front cabin bottom, and it is beneficial to the transmission and dispersion of collision forces at the front end of the front cabin, thereby further improving collision safety.

[0072] Continue to combine Figure 8As shown in the figure, the front cabin force transmission system of the embodiment further comprises a front end frame 4, and in structure, the front end frame 4 comprises side supports 401 arranged on the left and right sides, and an upper support 402 connected between the top ends of the side supports 401 on the left and right sides. The side supports 401 on the left and right sides are connected between the energy absorption boxes 5 on the same side and the connecting supports 7, and a lower cross beam 18 is also connected between the bottom ends of the side supports 401 on the left and right sides. In the height direction of the vehicle, the lower cross beam 18 is also arranged lower than the front crash beam 6.

[0073] At this time, the front end frame 4 is arranged between the energy absorption boxes 5 and the connecting supports 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 be understood that through the arrangement of the lower cross beam 18 lower than the front crash beam 6, the pedestrian can be prevented from being rolled into the bottom of the vehicle in the event of a collision, thereby improving the pedestrian protection effect.

[0074] It is worth noting that in specific implementation, the lower cross beam 18 and the front end frame 4 of the embodiment can be made of plastic, and for example, can be integrally injection molded by using the PP (polypropylene) material or the nylon material commonly used by those skilled in the art, which not only facilitates the preparation of the two, but also is beneficial to the lightweight design of the front cabin.

[0075] In the embodiment, based on the bending design of the front part of the front cabin longitudinal beam 1 on the left and right sides, as a preferred implementation form, the front end of the front cabin longitudinal beam 1 on the left and right sides is further connected to the front end frame 4 and the lower cross beam 18. Figure 9 As shown in the figure, the distance between the front ends of the front cabin longitudinal beams 1 on the left and right sides in the left-right direction of the vehicle is greater than the distance between the left and right ends of the front crash beam 6 in the front crash beam assembly in the left-right direction of the vehicle. At this time, the distance between the two ends of the front crash beam 6 is less than the distance between the front ends of the front cabin longitudinal beams 1 on the left and right sides, which not only enables the front cabin longitudinal beams 1 to participate in the small overlap collision, but also has a higher participation degree compared with the front crash beam 6. Therefore, it can utilize the effective transmission of the collision force by the front cabin longitudinal beams 1 to improve the safety of the small overlap collision and improve the safety quality of the vehicle.

[0076] In addition, as a preferred implementation form, from the top-down direction of the vehicle, the connecting supports 7 on the left and right sides can be arranged in a triangular shape. In this way, the connecting supports 7 are triangular, which can utilize the characteristic of high structural strength of the triangular structure to ensure the structural strength of the connecting supports 7 and ensure their use effect. In specific implementation, each connecting support 7 is a stamping part and is welded into a box-shaped structure, and each connecting support 7 and the front cabin longitudinal beam 1 on the same side are connected by welding.

[0077] Still from Figure 2 and continue to combine Figure 10 and Figure 11As shown in the figure, the front engine compartment force transmission system of this embodiment further includes torque boxes 12 respectively connected to the rear ends of the front engine compartment longitudinal beams 1 on both sides. Among them, one side of each torque box 12 is connected to the sill beam on the same side, the other side of each torque box 12 is connected to the middle channel reinforcing longitudinal beam 11 on the same side, and the two torque boxes 12 are connected by a connecting member 13. Moreover, the front engine compartment lower cross beam 10, the connecting member 13, and the front engine compartment longitudinal beams 1 and torque boxes 12 on both sides are connected to form an annular structure.

[0078] At this time, by connecting the two torque boxes 12 through the connecting member 13, the connecting function of the connecting member 13 can also be used to increase the lateral (left - right direction of the whole vehicle) stiffness of the whole body, and a through - force transmission channel is added between the two torque boxes 12, which is beneficial to the transmission of collision force between the left and right sides of the vehicle body. At the same time, the above - mentioned front engine compartment lower cross beam 10, connecting member 13, and the front engine compartment longitudinal beams 1 and torque boxes 12 on both sides are connected to form an annular structure, which can also increase the overall stiffness of the rear end of the bottom of the front engine compartment, helping to improve the structural safety of the front engine compartment.

[0079] In specific implementation, as a preferred implementation form, the two torque boxes 12 are both in a "human" shape and have 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 sill beam 10 on the same side, the inner box body 1202 on each side is connected to the middle channel reinforcing longitudinal beam 11 on the same side, and the two inner box bodies 1202 are also connected by a connecting member 13. In this way, by making the torque box 12 in a "human" shape in this embodiment, the collision force transmitted from the front engine compartment longitudinal beam 1 can be more evenly transmitted to the left and right sides, and it can also make the structural strength of the torque box 12 higher, not easily deformed, thus improving the application effect of the torque box 12.

[0080] In this embodiment, the outer box body 1201 on each side is connected to the rear end of the front engine compartment longitudinal beam 1 on the same side, the inner box body 1202 on each side is connected to one side of the outer box body 1201 on the same side, and both the outer box body 1201 and the inner box body 1202 can be made of stamped sheet metal parts and are connected by welding. In this way, connecting the outer box body 1201 to the front engine compartment longitudinal beam 1 and connecting the inner box body 1202 to one side of the outer box body 1201 not only facilitates the overall design and forming of the torque box 12, but also is convenient for the layout of the torque box 12 in the vehicle body.

[0081] In addition, in this embodiment, the outer box body 1201 and the inner box body 1202 on each side are also buckled on the front panel connecting plate 16, and cavities are formed between the outer box body 1201, the inner box body 1202 and the front panel connecting plate 16. Thus, by forming cavities between the inner and outer box bodies and the front panel connecting plate 16, the characteristics of large structural strength of the cavity structure can be utilized to ensure the structural strength of the position of the inner and outer box bodies to ensure their application effect.

[0082] It is worth noting that the aforementioned front bulkhead connecting plate 16 connects between the front bulkhead 14 and the front floor 17, and the front of the central channel 15 and the central channel reinforcing longitudinal beams 11 on its left and right sides are also connected to the front bulkhead connecting plate 16 and connected to the bottom end of the front bulkhead 14. Moreover, the two central channel reinforcing longitudinal beams 11 are located at the bottom of the central channel 15 and are respectively arranged on the left and right sides of the central channel 15. Like the central channel 15, each central channel reinforcing longitudinal beam 11 extends along the front-rear direction of the vehicle.

[0083] It is understandable that, in addition to both the outer box 1201 and the inner box 1202 forming a cavity with the front connecting plate 16, in specific implementation, it is also possible to form a cavity between only one of the inner or outer boxes and the front connecting plate 16.

[0084] In this embodiment, as a preferred implementation, the connector 13 can be, for example, a tubular beam. Using a tubular beam for the connector 13 facilitates its fabrication and ensures its connection strength. Furthermore, in practice, to facilitate the connection between the two ends of the connector 13 and the inner box 1202, the two ends of the tubular beam connector 13 can be flattened and fixed to the inner box 1202 using bolts.

[0085] It should be noted that, in addition to using tubular beams, the connector 13 in this embodiment can also use other conventional beam structures, as long as they can achieve the connection between the inner boxes 1202 on both sides and ensure the required connection strength.

[0086] As a preferred implementation method, continue to combine Figure 12 and Figure 13 As shown, the front engine compartment force transmission system of this embodiment also includes lower force transmission beams 20 respectively disposed on the side of each front engine compartment longitudinal beam 1 located inside the front engine compartment. Each lower force transmission beam 20 is connected to the side of the front bulkhead 14 facing the front of the vehicle, and one end of each lower force transmission beam 20 is connected to the front engine compartment longitudinal beam 1 on the same side, and the other end of each lower force transmission beam 20 is connected to the central channel reinforcing longitudinal beam 11 on the same side.

[0087] At this time, by setting the lower force transmission beam 20, the rigidity of the bottom of the front bulkhead can be increased, and a force transmission channel can also be added between the front engine compartment longitudinal beam 1 and the central channel 15, which is conducive to the transmission and dispersion of the collision force to the central channel 15.

[0088] In the specific arrangement, each side lower force transmission beam 20 is connected to one side of the dash panel 14 towards the vehicle front, and as a preferred embodiment, each side lower force transmission beam 20 is also arranged to form a cavity with the dash panel 14 and the same side front engine compartment longitudinal beam 1. In this way, by arranging the lower force transmission beam 20 to form a cavity with the dash panel 14 and the front engine compartment longitudinal beam 1, the structural strength of the lower force transmission beam 20 position can be improved by taking advantage of the high structural strength of the cavity, thereby ensuring the application effect.

[0089] On the basis of forming a cavity at the lower force transmission beam 20, as a preferred embodiment, the width of the end of each side lower force transmission beam 20 connected to the front engine compartment longitudinal beam 1 can be greater than the width of the end of each side lower force transmission beam 20 connected to the middle tunnel reinforcing longitudinal beam 11, and the side of each side lower force transmission beam 20 towards the vehicle front is arranged to form a smooth transition arc-shaped surface 20a.

[0090] The width of the lower force transmission beam 20 is the width of the lower force transmission beam 20 in the front-rear direction of the vehicle. By arranging the end of the lower force transmission beam 20 connected to the front engine compartment longitudinal beam 1 to have a greater width and forming a smooth transition surface 20a on the front side, the cross-section of the lower force transmission beam 20 can be prevented from changing sharply, which can cause poor transmission of impact force, 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 adopts other beam structures and does not form the above-mentioned cavity, the end of the lower force transmission beam 20 connected to the front engine compartment longitudinal beam 1 can also be arranged to have a greater width to achieve the above-mentioned effects.

[0091] In the present embodiment, further, as a preferred embodiment, 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 middle tunnel reinforcing longitudinal beams 11. The connecting plate 21 is a stamped plate that is connected to the two middle tunnel reinforcing longitudinal beams 11 by welding. By connecting the two middle tunnel reinforcing longitudinal beams 11 through the connecting plate 21, the rigidity of the front end of the middle tunnel 15 can be improved through the connecting effect of the connecting plate 21, and a force transmission channel can be formed between the two middle tunnel reinforcing longitudinal beams 11, which can help the transmission of impact force between the left and right sides of the vehicle body.

[0092] The front engine compartment force transmission system of the present embodiment, through the above structural arrangement, in combination with the advantages of the above-mentioned front engine compartment force transmission system, Figure 14As shown, it can be connected at the bottom of the front cabin position to form a plurality of annular structures, so that it not only can utilize the characteristics of the annular structure with high strength to increase the overall stiffness of the bottom position of the front cabin, and it can also form a plurality of through force transmission channels at the bottom of the front cabin, which can utilize the transmission and absorption of the front cabin longitudinal beam 1, the front wheel cover side beam 3, the A-pillar 9, the support cross beam 8, the front cabin lower cross beam 10, and the torsion box 12, the connecting beam 13, the lower force transmission beam 20 and the connecting plate 21, etc., to facilitate the transmission and dispersion of the collision force, and thus the vehicle crash safety can be improved.

[0093] Embodiment two

[0094] The vehicle of the present embodiment is provided with the front cabin force transmission system of embodiment one, which increases the overall stiffness of the bottom position of the front cabin and is also conducive to the transmission and dispersion of the collision force at the front end of the front cabin, thereby improving the vehicle crash safety.

[0095] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A forward nacelle force transmission system, characterized in that: It includes forward engine compartment longitudinal beams (1) located on the left and right sides, and forward shock absorber towers (2) connected to the forward engine compartment longitudinal beams (1) on each side. The front of the front engine compartment longitudinal beams (1) on both sides is bent outward in the left-right direction of the vehicle, and a connecting bracket (7) is connected to the bent part of each front engine compartment longitudinal beam (1), and a supporting crossbeam (8) is connected between the connecting brackets (7) on both sides. The front side of the front shock absorber towers (2) on both sides is provided with front reinforcing longitudinal beams (201). The front reinforcing longitudinal beams (201) are arranged along the height direction of the front shock absorber towers (2). The bottom ends of the front reinforcing longitudinal beams (201) on both sides are connected together by the front nacelle lower crossbeam (10) located between the top of the front nacelle longitudinal beams (1) on both sides. The front nacelle lower crossbeam (10), the supporting crossbeam (8), and the front nacelle longitudinal beams (1) on both sides and the connecting bracket (7) are connected to form a ring structure. It also includes a front bumper beam assembly connected to the connecting brackets (7) on both sides; The front bumper beam assembly includes an energy-absorbing box (5) connected to the connecting brackets (7) on both sides respectively, and a front bumper beam (6) connected to the energy-absorbing boxes (5) on both sides. The front anti-collision beam (6), the supporting crossbeam (8), and the energy-absorbing boxes (5) on both sides and the connecting bracket (7) are connected to form a ring structure; The energy-absorbing boxes (5) on each side and the portion of the front engine compartment longitudinal beam (1) on the same side located behind the connecting bracket (7) are arranged in the front-rear direction of the vehicle.

2. The forward nacelle force transmission system according to claim 1, characterized in that: The distance between the front ends of the front engine compartment longitudinal beams (1) on both sides along the left-right direction of the whole vehicle is greater than the distance between the left and right ends of the front anti-collision beam (6) along the left-right direction of the whole vehicle.

3. The forward nacelle force transmission system according to claim 1, characterized in that: It also includes the front-end framework (4); The front frame (4) includes side brackets (401) disposed on the left and right sides, and an upper bracket (402) connected between the tops of the side brackets (401) on both sides. Both sides of the side bracket (401) are connected between the energy-absorbing box (5) and the connecting bracket (7) on the same side, and a lower crossbeam (18) is connected between the bottom ends of the two sides of the side bracket (401). In the overall vehicle height direction, the lower crossbeam (18) is set lower than the front anti-collision beam (6).

4. The forward nacelle force transmission system according to claim 1, characterized in that: The front engine compartment longitudinal beam (1) includes an inner longitudinal beam plate (101) and an outer longitudinal beam plate (102) that are fastened together. The front portions of both the inner longitudinal beam plate (101) and the outer longitudinal beam plate (102) are bent outwards towards the vehicle side, and both the inner longitudinal beam plate (101) and the outer longitudinal beam plate (102) are integrally formed; and / or, From the perspective of the vehicle's vertical direction, the connecting brackets (7) on both sides are triangular.

5. The forward nacelle force transmission system according to claim 1, characterized in that: It further includes torque boxes (12) respectively connected to the rear ends of the front engine compartment longitudinal beams (1) on both sides; One side of each torque box (12) is connected to the sill beam on the same side, the other side of each torque box (12) is connected to the middle channel reinforcing longitudinal beam (11) on the same side, and the two torque boxes (12) on both sides are connected by a connecting member (13); The front engine compartment lower cross beam (10), the connecting member (13), and the front engine compartment longitudinal beams (1) and the torque boxes (12) on both sides are connected to form an annular structure.

6. The front engine compartment force transmission system according to claim 5, wherein: The two torque boxes (12) on both sides are both in a "human" shape and have 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 sill beam (19) on the same side, the inner box body (1202) on each side is connected to the middle channel reinforcing longitudinal beam (11) on the same side, and the two inner box bodies (1202) on both sides are connected by the connecting member (13).

7. The front engine compartment force transmission system according to claim 6, wherein: The outer box body (1201) and the inner box body (1202) on each side are both buckled on the front bulkhead connecting plate (16), and a cavity is formed between the outer box body (1201), the inner box body (1202) and the front bulkhead connecting plate (16); and / or, The connecting member (13) is a tubular beam.

8. The front engine compartment force transmission system according to any one of claims 1 to 7, wherein: It further includes lower force transmission beams (20) respectively arranged on the inner side of each front engine compartment longitudinal beam (1) in the front engine compartment; The lower force transmission beam (20) on each side is connected to the front side of the front bulkhead (14) facing the vehicle head, 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 channel reinforcing longitudinal beam (11) on the same side.

9. The front engine compartment force transmission system according to claim 8, wherein: The width of the end of the lower force transmission beam (20) on each side connected to the front engine compartment longitudinal beam (1) is greater than the width of the end of the lower force transmission beam (20) on each side connected to the middle channel reinforcing longitudinal beam (11), and a smoothly transitioned arc-shaped surface (20a) is formed on the front side of the lower force transmission beam (20) on each side facing the vehicle head; Wherein, the width is the width of the lower force transmission beam (20) in the longitudinal direction of the vehicle.

10. The front engine compartment force transmission system according to claim 8, wherein: The lower force transmission beam (20) on each side is connected to the front end of the middle channel reinforcing longitudinal beam (11) on the same side, and a connecting plate (21) is connected between the front ends of the two middle channel reinforcing longitudinal beams (11) on both sides.

11. A vehicle, wherein: The vehicle is provided with the front engine compartment force transmission system according to any one of claims 1 to 10.

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