Front body force transmission structure and vehicle

Abstract

The present invention provides a vehicle body front force transmission structure and a vehicle. The vehicle body front force transmission structure of the present invention includes front engine compartment longitudinal beams arranged on the left and right sides, torsion boxes respectively connected to the rear ends of the front engine compartment longitudinal beams on both sides, and lower force transmission beams respectively arranged on one side of each front engine compartment longitudinal beam located inside the front engine compartment; one side of the torsion box on each side is connected to the door sill beam on the same side, and the other side of the torsion box on each side is connected to the middle channel reinforcement longitudinal beam on the same side, and the torsion boxes on both sides are connected by a connecting piece; the lower force transmission beam on each side is connected to the side of the front panel facing the front of the vehicle, and one end of the lower force transmission beam on each side is connected to the front engine compartment longitudinal beam on the same side, and the other end of the lower force transmission beam on each side is connected to the middle channel reinforcement longitudinal beam on the same side. The vehicle body front force transmission structure of the present invention can improve the strength of the vehicle body front structure, and help transmit collision force in the front part of the vehicle body, thereby improving the safety of the entire vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle body technology, and particularly to a front-end force transmission structure for a vehicle body. This invention also relates to a vehicle equipped with the aforementioned front-end force transmission structure. Background Technology

[0002] With the continuous development of automotive technology, especially the increasing popularity of new energy vehicles, vehicle safety has become an increasingly important concern, which has brought new challenges to vehicle body design.

[0003] In the front structure of a vehicle body, the front engine compartment is the main load-bearing base for components and the main structure for transmitting collision forces. The front engine compartment generally has structures such as front engine compartment longitudinal beams, front shock absorber towers and front wheel arch side beams, and front anti-collision beams. The ends of the front engine compartment longitudinal beams are usually connected to the center tunnel, A-pillars, door sill beams, and other components via torsion boxes.

[0004] As the primary force transmission channel at the end of the front engine compartment, the structural design of the torque box directly affects the vehicle's crash performance rating. However, existing torque box structures still suffer from weak structural strength and poor force transmission efficiency. Furthermore, current technologies often only include connecting and force-transmitting structures like the torque box at the end of the front engine compartment, resulting in a relatively simple force transmission channel that hinders effective force transmission and ultimately impacts the overall vehicle crash safety performance. Summary of the Invention

[0005] In view of this, the present invention aims to propose a front force transmission structure for the vehicle body to improve the safety of the entire vehicle.

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

[0007] A front force transmission structure for a vehicle body includes front engine compartment longitudinal beams disposed on the left and right sides, torsion boxes connected to the rear ends of the front engine compartment longitudinal beams on both sides, and lower force transmission beams disposed on the side of each front engine compartment longitudinal beam located inside the front engine compartment.

[0008] One side of each torsion box is connected to the sill beam on the same side, and the other side of each torsion box is connected to the central channel reinforcing longitudinal beam on the same side. The torsion boxes on both sides are connected by connectors.

[0009] The lower force transmission beams on each side are connected to the side of the front bulkhead facing the front of the vehicle, and one end of each lower force transmission beam is connected to the front engine compartment longitudinal beam on the same side, while the other end of each lower force transmission beam is connected to the central channel reinforcing longitudinal beam on the same side.

[0010] Furthermore, both sides of the torque box are in the shape of an "A" and have an outer box and an inner box connected together;

[0011] Each outer box is connected to the threshold beam on the same side, and each inner box is connected to the central channel reinforcing longitudinal beam on the same side, with the connector connecting the inner boxes on both sides.

[0012] Furthermore, the outer box and the inner box on each side are fastened to the front connecting plate, and a cavity is formed between the outer box and the inner box and the front connecting plate; and / or,

[0013] The connector is a tubular beam.

[0014] Furthermore, the width of the end of the lower force transmission beam connected to the front engine compartment longitudinal beam on each side is greater than the width of the end of the lower force transmission beam connected to the middle channel reinforcing longitudinal beam on each side, and the side of the lower force transmission beam facing the front of the vehicle on each side forms a smoothly transitioning arc-shaped surface.

[0015] The width is the width of the lower force transmission beam along the front-rear direction of the vehicle.

[0016] Furthermore, the lower force transmission beams on each side are connected to the front end of the middle channel reinforcing longitudinal beam on the same side, and a connecting plate is connected between the front ends of the middle channel reinforcing longitudinal beams on both sides.

[0017] Furthermore, front shock absorber towers are connected to the longitudinal beams of the front engine compartment on both sides, and a rear reinforcing longitudinal beam is provided on the side of each of the front shock absorber towers.

[0018] The bottom end of the rear reinforcing longitudinal beam on each side is connected to the forward engine compartment longitudinal beam on the same side, and the end of the lower force transmission beam on each side connected to the forward engine compartment longitudinal beam is connected to the bottom end of the rear reinforcing longitudinal beam.

[0019] Furthermore, the top ends of the rear reinforcing longitudinal beams on both sides are connected together by a front nacelle upper crossbeam located between the tops of the front shock absorber towers on both sides.

[0020] Furthermore, the rear reinforcing longitudinal beams on both sides are fastened to the front shock absorber tower and the front engine compartment longitudinal beam, and together with the front shock absorber tower and the front engine compartment longitudinal beam, they form a rear longitudinal beam cavity.

[0021] The upper crossbeam of the front nacelle includes a crossbeam body connected to the top of the rear reinforcing longitudinal beams on both sides at the left and right ends, and a crossbeam sealing plate connected between the tops of the front shock absorber towers on both sides. The crossbeam body has a U-shaped cross section. The crossbeam body and the crossbeam sealing plate form an upper crossbeam cavity. The two ends of the upper crossbeam cavity are connected to the cavities of the rear longitudinal beams on both sides.

[0022] Furthermore, it also includes the front wheel arch side beams arranged side by side on the side of each of the aforementioned front engine compartment longitudinal beams near the outside of the vehicle;

[0023] The front parts of the longitudinal beams of the front engine compartment on both sides are bent outwards in the left-right direction of the vehicle, and the front ends of the side beams of the front wheel arches on each side extend forward and downward, and are connected to the front ends of the longitudinal beams of the front engine compartment on the same side.

[0024] Furthermore, each of the bent portions of the front engine compartment longitudinal beams is connected to a connecting bracket, and both sides of the front engine compartment longitudinal beams are connected to the front anti-collision beam assembly through the connecting brackets;

[0025] The distance between the front ends of the longitudinal beams of the front engine compartment on both sides along the left-right direction of the vehicle is greater than the distance between the left and right ends of the front bumper beam in the front bumper beam assembly along the left-right direction of the vehicle.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] The front vehicle body force transmission structure described in this invention connects the two torsion boxes via connectors, thereby increasing the overall lateral stiffness of the vehicle body and creating a through force transmission channel between the two torsion boxes, which facilitates the transmission of collision forces between the left and right sides of the vehicle body. Simultaneously, by setting a lower force transmission beam connecting the front engine compartment longitudinal beam and the central channel reinforcing longitudinal beam, the connection strength between the front engine compartment longitudinal beam and the central channel is increased, and a new force transmission channel is created between them, further aiding in the transmission of collision forces and improving overall vehicle safety.

[0028] Furthermore, designing the torsion box in an "A" shape allows for a more even distribution of impact forces from the forward engine compartment longitudinal beams to both sides. This also ensures the torsion box has high structural strength, is less prone to deformation, and improves its performance. A cavity is formed between the inner and outer boxes and the front bulkhead connecting plate. The high structural strength of this cavity ensures the structural strength of the inner and outer boxes, guaranteeing their effectiveness. The connecting components utilize tubular beams, facilitating fabrication and ensuring strong connections.

[0029] The lower load-bearing beam has a wider end connecting to the front engine compartment longitudinal beam, forming a smooth transition surface on its front side. This prevents drastic changes in the lower load-bearing beam's cross-section, which could hinder the transmission of collision forces. It also increases the stability of the connection between the lower load-bearing beam and the front engine compartment longitudinal beam. The two side central tunnel reinforcing longitudinal beams are connected by connecting plates. These plates increase the rigidity of the front end of the central tunnel and create a force transmission channel between the two side central tunnel reinforcing longitudinal beams, facilitating the transmission of collision forces between the left and right sides of the vehicle body.

[0030] Secondly, the rear reinforcing longitudinal beams enhance the structural strength of the shock absorber towers, allowing for a reduction in tower thickness and weight. Simultaneously, the lower force transmission beam connects to the rear reinforcing longitudinal beams, further increasing the connection strength between the lower force transmission beam and the front engine compartment longitudinal beams. This also creates a continuous force transmission channel between the rear reinforcing longitudinal beams and the lower force transmission beam, facilitating the distribution of collision forces. The two rear reinforcing longitudinal beams are connected via the upper crossbeam of the front engine compartment, forming a lateral connection between the two front shock absorber towers and improving the Y-axis stiffness of the front of the vehicle.

[0031] The formation of the rear longitudinal beam cavity can utilize the high structural strength of the cavity to increase the structural strength of the rear reinforcing longitudinal beam itself. The upper crossbeam of the forward engine compartment is composed of the crossbeam body and the crossbeam sealing plate, which facilitates the preparation of the upper crossbeam of the forward engine compartment. At the same time, the formation of the upper crossbeam cavity, which is connected to the rear longitudinal beam cavity, can also ensure the reliability of the connection between the upper crossbeam of the forward engine compartment and the rear reinforcing longitudinal beams on both sides, as well as ensure the continuity of the force transmission channel formed between the upper crossbeam of the forward engine compartment and the rear reinforcing longitudinal beam, which helps to improve the collision force transmission effect.

[0032] Furthermore, by bending the front of the front engine compartment longitudinal beam outwards and connecting the front end of the front wheel arch side beam to the front end of the front engine compartment longitudinal beam, both the front engine compartment longitudinal beam and the front wheel arch side beam can better participate in small overlap collisions. This allows for the effective transfer of collision forces through the front engine compartment longitudinal beam and the front wheel arch side beam, improving safety in small overlap collisions and contributing to overall vehicle safety. The connecting brackets facilitate the connection between the front bumper beam assembly and the front engine compartment longitudinal beam, ensuring reliable connection. The distance between the two ends of the front bumper beam is smaller than the distance between the front ends of the two front engine compartment longitudinal beams. This not only allows the front engine compartment longitudinal beam to participate in small overlap collisions but also gives it a higher degree of participation compared to the front bumper beam. Therefore, the effective transfer of collision forces through the front engine compartment longitudinal beam further enhances safety in small overlap collisions and improves overall vehicle safety.

[0033] Another object of the present invention is to provide a vehicle in which the front body of the vehicle is provided with the force transmission structure described above.

[0034] The vehicle described in this invention has the same beneficial effects as the aforementioned front-end force transmission structure, and will not be repeated here. Attached Figure Description

[0035] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of the front structure of the vehicle body according to an embodiment of the present invention;

[0037] Figure 2 for Figure 1A schematic diagram of the structure shown from the bottom view;

[0038] Figure 3 for Figure 1 A schematic diagram of the middle section structure;

[0039] Figure 4 This is a schematic diagram illustrating the arrangement of the connecting bracket according to an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram illustrating the arrangement of the torsion box and lower force transmission beam according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the torque box according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the connector structure according to an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the lower force transmission beam configuration according to an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the lower force transmission beam according to an embodiment of the present invention;

[0045] Figure 10 This is a schematic diagram of the structure of the main beam body according to an embodiment of the present invention;

[0046] Figure 11 This is a schematic diagram illustrating the structure of the upper crossbeam of the forward engine compartment according to an embodiment of the present invention;

[0047] Figure 12 This is a schematic diagram of the forward engine compartment longitudinal beam as described in an embodiment of the present invention;

[0048] Figure 13 This is a schematic diagram showing the distance between the front ends of the longitudinal beams on both sides of the front engine compartment and the distance between the left and right ends of the front bumper beam;

[0049] Figure 14 This is a schematic diagram of the collision force transmission of the front structure of the vehicle body according to an embodiment of the present invention;

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Forward engine compartment longitudinal beam; 2. Forward shock absorber tower; 3. Forward wheel arch side beam; 4. Front end frame; 5. Energy absorption box; 6. Forward anti-collision beam; 7. Connecting bracket; 8. Support beam; 9. Forward engine compartment upper beam; 10. Sill beam; 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 force transmission beam; 19. Connecting plate;

[0052] 101. Inner plate of longitudinal beam; 102. Outer plate of longitudinal beam; 1a. Outer extension; 201. Rear reinforced longitudinal beam; 2011. Upper overlapping part; 2012. Side overlapping part; 901. Main body of crossbeam; 902. Crossbeam sealing plate; 1201. Outer box; 1202. Inner box; 18a. Curved surface. Detailed Implementation

[0053] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0054] 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.

[0055] 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.

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0057] This embodiment relates to a force transmission structure at the front of a vehicle body, combined with... Figures 1 to 5 As shown, the front force transmission structure of the vehicle body includes front engine compartment longitudinal beams 1 disposed on the left and right sides, torsion boxes 12 connected to the rear ends of the front engine compartment longitudinal beams 1 on both sides, and lower force transmission beams 18 disposed on the side of each front engine compartment longitudinal beam 1 located in the front engine compartment.

[0058] One side of each torsion box 12 is connected to the sill beam 10 on the same side, and the other side of each torsion box 12 is connected to the central channel reinforcing longitudinal beam 11 on the same side. The two torsion boxes 12 are connected to each other by a connector 13. Each lower force transmission beam 18 is connected to the side of the front bulkhead 14 facing the front of the vehicle. At the same time, one end of each lower force transmission beam 18 is connected to the front engine compartment longitudinal beam 1 on the same side, and the other end of each lower force transmission beam 18 is connected to the central channel reinforcing longitudinal beam 11 on the same side.

[0059] At this point, by connecting the two torque boxes 12 through the connector 13, the overall lateral stiffness of the vehicle body can be increased through the connecting effect of the connector 13, and a through force transmission channel can be added between the two torque boxes, which is beneficial to the transmission of collision force between the left and right sides of the vehicle body.

[0060] At the same time, by setting a lower force transmission beam 18 that connects the forward engine compartment longitudinal beam 1 and the middle channel reinforcing longitudinal beam 11, the connection strength between the forward engine compartment longitudinal beam 1 and the middle channel 15 can be increased, and a new force transmission channel can be added between the forward engine compartment longitudinal beam 1 and the middle channel 15, which helps to transfer the collision force between the two.

[0061] Specifically, continue to combine Figure 6 and Figure 7 As shown in the preferred embodiment, both torsion boxes 12 are in a "V" shape and have an outer box 1201 and an inner box 1202 connected together. The outer box 1201 on each side is connected to the sill beam 10 on the same side, and the inner box 1202 on each side is connected to the central channel reinforcing longitudinal beam 11 on the same side. The two inner boxes 1202 are connected by a connector 13. In this embodiment, by making the torsion boxes 12 in a "V" shape, the impact force transmitted from the front engine compartment longitudinal beam 1 can be transmitted more evenly to the left and right sides. It also ensures that the torsion boxes 12 have high structural strength and are not easily deformed, thus improving the application effect of the torsion boxes 12.

[0062] In this embodiment, each outer box 1201 is connected to the rear end of the front engine compartment longitudinal beam 1 on the same side, and each inner box 1202 is connected to one side of the outer box 1201 on the same side. Both the outer box 1201 and the inner box 1202 can be made of stamped sheet metal parts and connected by welding. In this way, the outer box 1201 is connected to the front engine compartment longitudinal beam 1, and the inner box 1202 is connected to one side of the outer box 1201. This not only facilitates the overall design and forming of the torque box 12, but also facilitates the arrangement of the torque box 12 in the vehicle body.

[0063] Furthermore, in this embodiment, the outer box 1201 and inner box 1202 on each side are also fastened to the front connecting plate 16, and a cavity is formed between the outer box 1201 and the inner box 1202 and the front connecting plate 16. Thus, by forming a cavity between the inner and outer boxes and the front connecting plate 16, the high structural strength of the cavity can be utilized to ensure the structural strength of the inner and outer boxes, thereby guaranteeing their application effect.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Continue to combine Figure 8 and Figure 9 As shown in the illustration, in this preferred embodiment, cavities are also formed between the lower force transmission beams 18 on each side, the front bulkhead 14, and the longitudinal beam 1 of the front engine compartment on the same side. By forming cavities between the lower force transmission beams 18, the front bulkhead 14, and the longitudinal beam 1 of the front engine compartment, the structural strength of the lower force transmission beams 18 can be improved by utilizing the high structural strength of the cavities, thus ensuring their effective application.

[0069] Based on the cavity formed at the lower force transmission beam 18, as a preferred embodiment, in this embodiment, the width of the end of each lower force transmission beam 18 connected to the front engine compartment longitudinal beam 1 can be set to be greater than the width of the end of each lower force transmission beam 18 connected to the middle channel reinforcing longitudinal beam 11, and each lower force transmission beam 18 on the side facing the front of the vehicle forms a smoothly transitioning arc-shaped surface 18a.

[0070] The width of the lower force transmission beam 18 is the width of the lower force transmission beam 18 along the longitudinal direction of the entire vehicle. Furthermore, by making the end of the lower force transmission beam 18 connected to the front engine compartment longitudinal beam 1 wider, and forming a smooth transition surface 18a on its front side, drastic changes in the cross-section of the lower force transmission beam 18 can be avoided, preventing poor transmission of collision force. This also increases the stability of the connection between the lower force transmission beam 18 and the front engine compartment longitudinal beam 1. Of course, it should be noted that even when the lower force transmission beam 18 uses other beam structures and does not form the aforementioned cavity, the width of the end of the lower force transmission beam 18 connected to the front engine compartment longitudinal beam 1 can still be made larger to achieve the effects described above.

[0071] In this embodiment, further, as a preferred implementation, each side lower force transmission beam 18 is specifically connected to the front end of the same side central channel reinforcing longitudinal beam 11, and a connecting plate 19 is connected between the front ends of the two sides of the central channel reinforcing longitudinal beam 11. This connecting plate 19 is made of stamped sheet metal and is welded to the two sides of the central channel reinforcing longitudinal beam 11. Moreover, it is understood that connecting the two sides of the central channel reinforcing longitudinal beam 11 via the connecting plate 19 increases the rigidity of the front end of the central channel 15 through the connecting effect of the connecting plate 19, and also forms a force transmission channel between the two sides of the central channel reinforcing longitudinal beam 11, which helps to transmit collision forces between the left and right sides of the vehicle body.

[0072] Continue to combine Figure 10 and Figure 11 As shown, in this embodiment, front shock absorber towers 2 are also connected to the front engine compartment longitudinal beams 1 on both sides. In addition, as a preferred embodiment, a rear reinforcing longitudinal beam 201 is provided on the side of each front shock absorber tower 2. Furthermore, the bottom end of each rear reinforcing longitudinal beam 201 is connected to the front engine compartment longitudinal beam 1 on the same side. The end of each lower force transmission beam 18 connected to the front engine compartment longitudinal beam 1 is connected to the bottom end of the rear reinforcing longitudinal beam 201.

[0073] At this point, the installation of the aforementioned rear reinforcing longitudinal beam 201 enhances the structural strength of the front shock absorber tower 2, which helps reduce the thickness of the shock absorber tower material and achieve weight reduction. Furthermore, connecting the lower force transmission beam 18 to the rear reinforcing longitudinal beam 201 not only further increases the connection strength between the lower force transmission beam 18 and the front engine compartment longitudinal beam 1, but also allows the rear reinforcing longitudinal beam 201 and the lower force transmission beam 18 to form a continuous force transmission channel, which is beneficial for the transmission and dispersion of collision forces.

[0074] Based on the aforementioned rear reinforcing longitudinal beam 201 configuration, as a preferred embodiment, this embodiment further connects the top ends of the two rear reinforcing longitudinal beams 201 together via a front engine compartment upper crossbeam 9 located between the tops of the two front shock absorber towers 2. Thus, the two rear reinforcing longitudinal beams 201 connected via the front engine compartment upper crossbeam 9 form a lateral connection between the two front shock absorber towers 2, thereby further improving the rigidity of the front of the vehicle body in the Y-direction (left-right direction).

[0075] Specifically, in terms of structural design, both rear reinforcing longitudinal beams 201 can be fastened to the front shock absorber tower 2 and the front engine compartment longitudinal beam 1, forming a rear longitudinal beam cavity between them. In this case, the formation of the rear longitudinal beam cavity utilizes the high structural strength of the cavity to increase the structural strength of the rear reinforcing longitudinal beam 201 itself.

[0076] Corresponding to the above-mentioned structural arrangement of the rear reinforcing longitudinal beam 201 and the formation of the rear longitudinal beam cavity, the front nacelle upper crossbeam 9 of this embodiment specifically includes a crossbeam body 901 connected to the top of the left and right ends and the top of the rear reinforcing longitudinal beams 201 on both sides, and a crossbeam sealing plate 902 connected between the tops of the front shock absorber towers 2 on both sides.

[0077] The cross-section of the main body 901 is U-shaped, and the main body 901 and the crossbeam end plate 902 form an upper crossbeam cavity. The two ends of the upper crossbeam cavity are connected to the rear longitudinal beam cavities on both sides. In addition, the two ends of the crossbeam end plate 902 are also attached to the top of the front shock absorber tower 2 and connected to the front shock absorber tower 2 by welding, so as to realize the connection between the two ends of the upper crossbeam 9 in the front engine compartment and the front shock absorber tower 2, and further improve the lateral connection strength between the upper crossbeam 3 in the front engine compartment and the front shock absorber towers 2 on both sides.

[0078] Understandably, the upper crossbeam 9 of the forward engine compartment is composed of a crossbeam body 901 and a crossbeam sealing plate 902, which facilitates the preparation of the upper crossbeam 9 of the forward engine compartment. At the same time, the formation of the upper crossbeam cavity and its connection with the rear longitudinal beam cavity can also ensure the reliability of the connection between the upper crossbeam 9 of the forward engine compartment and the rear reinforcing longitudinal beams 201 on both sides, as well as ensure the continuity of the force transmission channel formed between the upper crossbeam 9 of the forward engine compartment and the rear reinforcing longitudinal beams 201, which helps to improve the collision force transmission effect.

[0079] In specific implementation, the rear reinforcing longitudinal beams 201 located on both sides are preferably integrally formed with the main body of the crossbeam 901. This not only helps to further improve the connection strength between the rear reinforcing longitudinal beams 201 and the upper crossbeam 9 of the front engine compartment, but also helps to improve the connection effect between the upper crossbeam cavity and the cavities of the rear longitudinal beams on both sides, resulting in a better effect on the transmission and dispersion of collision forces. Of course, as a preferred implementation, the connection between the rear reinforcing longitudinal beams 201 and the main body of the crossbeam 901 can adopt a smooth arc transition to avoid abrupt structural changes at the connection, thereby improving the force transmission efficiency.

[0080] Furthermore, as a preferred embodiment, in this example, the bottom ends of both rear reinforcing longitudinal beams 201 also have upper overlapping portions 2011 that overlap the top end face of the front engine compartment longitudinal beam 1, and side overlapping portions 2012 that overlap the side end face of the front engine compartment longitudinal beam 1 facing the vehicle interior. The upper overlapping portions 2011 and side overlapping portions 2012 are welded to the front engine compartment longitudinal beam 1 respectively, and the cooperation between the upper overlapping portions 2011 and side overlapping portions 2012 improves the reliability of the connection between them, which is beneficial to enhancing the longitudinal reinforcement effect of the rear reinforcing longitudinal beams 201. Simultaneously, the end of the lower force transmission beam 18 near the front engine compartment longitudinal beam 1 can also overlap the upper overlapping portions 2011 and side overlapping portions 2012 to achieve connection with the bottom end of the rear reinforcing longitudinal beams 201.

[0081] In this embodiment, in addition to the structures described above, the front force transmission mechanism of the vehicle body also includes front wheel arch side beams 3 arranged side-by-side on the outer side of each front engine compartment longitudinal beam 1. Furthermore, the front engine compartment longitudinal beam 1 in this embodiment can, for example, adopt a beam structure commonly found in existing vehicle bodies. However, as a preferred embodiment, combined with... Figure 12 As shown in the figure, in this embodiment, the front part of the longitudinal beams 1 of the front engine compartment on both sides is bent outward to the side of the vehicle in the left-right direction to form an outward extension section 1a, and the front end of the side beams 3 of the front wheel arches on each side extends forward and downward and is connected to the front end of the longitudinal beams 1 of the front engine compartment on the same side.

[0082] At this point, the front part of the forward engine compartment longitudinal beam 1 bends outward. In this embodiment, the forward engine compartment longitudinal beam 1 can better participate in small overlap collisions, effectively transferring the collision force and improving the safety of small overlap collisions. The front end of the front wheel arch side beam 3 extends forward and downward to connect with the front end of the forward engine compartment longitudinal beam 1, which also helps to transfer the collision force to the front wheel arch side beam 3, thus facilitating the transfer of the collision force in small overlap collisions.

[0083] In addition, as a preferred implementation, see also Figure 12 As shown, the front engine compartment longitudinal beam 1 in this embodiment may include, for example, an inner longitudinal beam plate 101 and an outer longitudinal beam plate 102 that are fastened together. The two plates together form a longitudinal beam cavity to ensure the structural strength of the front engine compartment longitudinal beam 1. At the same time, the inner longitudinal beam plate 101 and the outer longitudinal beam plate 102 are also integrally formed, and the front parts of the inner longitudinal beam plate 101 and the outer longitudinal beam plate 102 are bent outwards to form the extended section 1a, thereby realizing the bending setting of the front part of the front engine compartment longitudinal beam 1.

[0084] Here, the inner plate 101 and outer plate 102 of the longitudinal beam 1 in the front engine compartment are integrally formed, which ensures the stability of the front engine compartment longitudinal beam 1 structure. Furthermore, it is worth noting that, in specific design, the distance between the bent portion of each side of the front engine compartment longitudinal beam 1 and the wheel well envelope of the front wheel on the same side should generally be set at 10mm or more. This distance setting between the bent portion of the front engine compartment longitudinal beam 1 and the front wheel well envelope avoids interference with the front wheel, ensuring smooth movement of the front wheel.

[0085] 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.

[0086] Based on the bending design of the front part of the front engine compartment longitudinal beams 1 on both sides, as a preferred embodiment, in this embodiment, each front engine compartment longitudinal beam 1 is connected to a connecting bracket 7 at the bending part, and both front engine compartment longitudinal beams 1 are connected to the front anti-collision beam assembly through the connecting bracket 7.

[0087] The aforementioned front bumper beam assembly includes an energy-absorbing box 5 connected to each connecting bracket 7, and a front bumper beam 6 connected to the energy-absorbing boxes 5 on both sides. At the same time, a front frame is also provided between each side energy-absorbing box 5 and the connecting bracket 7.

[0088] In a preferred embodiment, a supporting beam 8 can be connected between the two connecting brackets 7 to increase the lateral rigidity of the front engine compartment. Furthermore, viewed from the vertical direction of the vehicle, the connecting brackets 7 on both sides of this embodiment can be configured as triangular. This triangular shape utilizes the high strength of the triangular structure to ensure the structural strength of the connecting bracket 7 and its performance. In a practical implementation, each connecting bracket 7 can be made of stamped parts and welded into a box-shaped structure. Each connecting bracket 7 can be connected to the longitudinal beam 1 of the front engine compartment on the same side by welding.

[0089] In addition, as a preferred implementation method, it can also be combined with Figure 13 As shown, the distance between the front ends of the two front engine compartment longitudinal beams 1 along 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 front bumper beam assembly along the left-right direction of the vehicle. This makes the distance between the two ends of the front bumper beam 6 smaller than the distance between the front ends of the two front engine compartment longitudinal beams 1, allowing the front engine compartment longitudinal beams 1 to participate in small overlap collisions, and also giving them a higher degree of participation compared to the front bumper beam 6. Therefore, the effective transmission of collision force by the front engine compartment longitudinal beams 1 can improve the safety of small overlap collisions and enhance the overall vehicle safety.

[0090] The front force transmission structure of this embodiment connects the two torsion boxes 12 via connectors 13. The connectors 13 enhance the overall lateral stiffness of the vehicle body and create a continuous force transmission channel between the two torsion boxes, facilitating the transmission of collision forces between the left and right sides of the vehicle. Furthermore, by providing a lower force transmission beam 18 connecting the front engine compartment longitudinal beam 1 and the central channel reinforcing longitudinal beam 11, the connection strength between the front engine compartment longitudinal beam 1 and the central channel 15 is increased, and a new force transmission channel is added between them.

[0091] Therefore, combined Figure 14 As shown, taking a frontal collision as an example, the collision force is transmitted rearward along the front engine compartment longitudinal beam 1. At the lower force transmission beams 18 on each side, the collision force can be dispersed and transmitted to the central channel 15. At the torsion boxes 12 on both sides, the collision force can be transmitted and dispersed to the sill beams 10 on both sides and the central channel 15 respectively. In this way, it can help transmit the collision force at the front of the vehicle body, thereby improving the overall safety of the vehicle.

[0092] Finally, this embodiment also relates to a vehicle in which the front body of the vehicle is provided with the above-described force transmission structure.

[0093] By incorporating the aforementioned front force transmission structure, the vehicle in this embodiment can increase the structural strength of the front of the vehicle body and facilitate the transmission of collision forces at the front of the vehicle body, thereby improving the overall safety of the vehicle.

[0094] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A front body force transmission structure, characterized in that: It includes front engine bay longitudinal beams (1) separately arranged on the left and right sides, torque boxes (12) respectively connected to the rear ends of the front engine bay longitudinal beams (1) on both sides, and lower force transmission beams (18) respectively arranged on one side of each front engine bay longitudinal beam (1) located inside the front engine bay; One side of each torque box (12) is connected to the same-side sill beam (10), the other side of each torque box (12) is connected to the same-side middle channel reinforcing longitudinal beam (11), and the two torque boxes (12) are connected by a connecting member (13); Each lower force transmission beam (18) is connected to the side of the front panel (14) facing the vehicle head, and one end of each lower force transmission beam (18) is connected to the same-side front engine bay longitudinal beam (1), and the other end of each lower force transmission beam (18) is connected to the same-side middle channel reinforcing longitudinal beam (11); Each lower force transmission beam (18) is connected to the front end of the same-side middle channel reinforcing longitudinal beam (11), and a connecting plate (19) is connected between the front ends of the two middle channel reinforcing longitudinal beams (11); It further includes front wheel well side beams (3) arranged side by side on the side of each front engine bay longitudinal beam (1) close to the outside of the vehicle; The front parts of the front engine bay longitudinal beams (1) on both sides are bent outward on the vehicle's left-right direction, and the front end of each front wheel well side beam (3) extends forward and downward and is connected to the front end of the same-side front engine bay longitudinal beam (1).

2. The front body force transmission structure according to claim 1, characterized in that: The torque boxes (12) on both sides are both in a "person" shape and have an outer box body (1201) and an inner box body (1202) connected together; One side of each outer box body (1201) is connected to the same-side sill beam (10), one side of each inner box body (1202) is connected to the same-side middle channel reinforcing longitudinal beam (11), and the connecting member (13) is connected between the two inner box bodies (1202).

3. The front body force transmission structure according to claim 2, characterized in that: One side of each outer box body (1201) and the inner box body (1202) are both buckled on the front panel connecting plate (16), and cavities are respectively formed between the outer box body (1201) and the inner box body (1202) and the front panel connecting plate (16); and / or, The connecting member (13) is a tubular beam.

4. The front body force transmission structure according to claim 1, characterized in that: The width of one end of each lower force transmission beam (18) connected to the front engine bay longitudinal beam (1) is greater than the width of one end of each lower force transmission beam (18) connected to the middle channel reinforcing longitudinal beam (11), and a smoothly transitional arc-shaped surface (18a) is formed on the side of each lower force transmission beam (18) facing the vehicle head; Wherein, the width is the width of the lower force transmission beam (18) along the vehicle's front-rear direction.

5. The front body force transmission structure according to claim 1, characterized in that: The front engine compartment longitudinal beams (1) on both sides are respectively connected to the front shock absorber towers (2), and the side of each front shock absorber tower (2) is provided with a rear reinforcing longitudinal beam (201). The bottom end of the rear reinforcing longitudinal beam (201) on each side is connected to the front engine compartment longitudinal beam (1) on the same side, and the end of the lower force transmission beam (18) on each side connected to the front engine compartment longitudinal beam (1) is connected to the bottom end of the rear reinforcing longitudinal beam (201).

6. The front force transmission structure of the vehicle body according to claim 5, characterized in that: The top ends of the rear reinforcing longitudinal beams (201) on both sides are connected together by the upper crossbeam (9) of the front nacelle located between the tops of the front shock absorber towers (2) on both sides.

7. The front force transmission structure of the vehicle body according to claim 6, characterized in that: The rear reinforcing longitudinal beams (201) on both sides are fastened to the front shock absorber tower (2) and the front engine compartment longitudinal beam (1), and together with the front shock absorber tower (2) and the front engine compartment longitudinal beam (1), they form a rear longitudinal beam cavity; The front nacelle upper crossbeam (9) includes a crossbeam body (901) that is connected to the top of the rear reinforcing longitudinal beams (201) on both sides at the left and right ends, and a crossbeam sealing plate (902) that is connected between the top of the front shock absorber towers (2) on both sides. The cross-section of the main body of the crossbeam (901) is U-shaped. The main body of the crossbeam (901) and the crossbeam sealing plate (902) form an upper crossbeam cavity. The two ends of the upper crossbeam cavity are connected to the rear longitudinal beam cavities on both sides.

8. The front force transmission structure of the vehicle body according to claim 1, characterized in that: Each of the forward engine compartment longitudinal beams (1) is connected to a connecting bracket (7) at its bent portion. Both sides of the forward engine compartment longitudinal beams (1) are connected to the front anti-collision beam assembly through the connecting bracket (7). The distance between the front ends of the longitudinal beams (1) of the front engine compartment on both sides along the left and right direction of the whole vehicle is greater than the distance between the left and right ends of the front anti-collision beam (6) in the front anti-collision beam assembly along the left and right direction of the whole vehicle.

9. A vehicle, characterized in that: The vehicle body is provided with a front force transmission structure as described in any one of claims 1 to 8.

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