Front cabin connecting structure and vehicle

Abstract

The application provides a front engine compartment connecting structure and a vehicle. The front engine compartment connecting structure comprises a front longitudinal beam and a front wheel cover side reinforcing beam assembly. The front wheel cover side reinforcing beam assembly comprises a side reinforcing beam, a front reinforcing cavity and a rear reinforcing cavity. The side reinforcing beam is located above the front longitudinal beam and is connected with the front longitudinal beam through the front reinforcing cavity and the rear reinforcing cavity. The application provides the front reinforcing cavity and the rear reinforcing cavity connected with the side reinforcing beam and the front longitudinal beam, supports and forms a force transmission path, can effectively disperse stress, reduces resonance at the wheel cover, and improves the overall torsional stiffness of the vehicle body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to a front engine compartment connecting structure and a vehicle. BACKGROUND

[0002] With the improvement of people's living standards, consumers have higher and higher requirements for the quality of automobiles. The safety and quietness of the front engine compartment connecting structure, which is indirectly contacted with the driver and passengers, are increasingly concerned by consumers. At the same time, as the most important component of the overall architecture of the vehicle body, the efficient and excellent structure of the front engine compartment connecting structure can not only provide high stiffness, improve durability, NVH, VD and collision safety performance, but also improve the bending and torsional stiffness, modal, NTF / VTF (Noise Transfer Function / Vibration Transfer Function) of the vehicle body, etc.

[0003] The existing front engine compartment connecting structure is generally composed of a left front wheel cover side reinforcement beam outer plate, a left front wheel cover side reinforcement beam outer plate front section, a front wheel cover front connecting plate, a left front wheel cover side reinforcement beam outer plate, a fender middle fixed support and a front fender lining plate mounting support, etc. These components form a large horn-shaped frame. The left front wheel cover side reinforcement beam outer plate front section extends downward and is connected with the root of the front bumper beam assembly to transmit the frontal impact force to the A-pillar area, thereby dispersing to various parts of the vehicle body, and the transmission channel is smooth, but the frontal force received by the left front wheel cover side reinforcement beam cannot be fully utilized. At the same time, the stiffness of the front engine compartment assembly is poor, there is no stable force transmission path, the upper and lower connections are not stable enough, which affects the torsional performance of the vehicle; and the number of parts is large and the structure is complex.

[0004] In order to meet the performance requirements and layout requirements of the vehicle body torsional stiffness, NVH road noise, durability, safety, mounting point dynamic stiffness, etc., the front engine compartment connecting structure is generally designed with a large cavity and a complex reinforcement structure. According to the CAE topology optimization analysis, the larger the cavity area, the more effective the force transmission path. However, if not considering multiple targets comprehensively, a lot of layout space is wasted, the cavity is not continuous, and only patches can be continuously strengthened on the existing structure space, the energy transmission efficiency and force transmission efficiency are not high, the manufacturing is complex and the cost is high, and the performance is poor.

[0005] Therefore, it is necessary to provide an improved front engine compartment connecting structure and a vehicle to solve the above problems. SUMMARY

[0006] The present application provides a front engine compartment connecting structure and a vehicle which can improve the force transmission efficiency and torsional stiffness.

[0007] The embodiment of the present application provides a front cabin connecting structure, which comprises a front longitudinal beam and a front wheel cover side reinforcing beam assembly; the front wheel cover side reinforcing beam assembly comprises a side reinforcing beam, a front reinforcing cavity and a rear reinforcing cavity; the side reinforcing beam is located above the front longitudinal beam and is connected with the front longitudinal beam through the front reinforcing cavity and the rear reinforcing cavity.

[0008] Further, the front longitudinal beam, the side reinforcing beam, the front reinforcing cavity and the rear reinforcing cavity jointly form a frame structure.

[0009] Further, the front reinforcing cavity is arranged at the front end of the front longitudinal beam and the side reinforcing beam; the lower part of the front reinforcing cavity is connected with the top wall and the inner side wall of the front longitudinal beam; the upper part of the front reinforcing cavity is connected with the inner side wall and the bottom wall of the side reinforcing beam.

[0010] Further, the front reinforcing cavity comprises an inner connecting plate and a side connecting plate, and the inner connecting plate and the side connecting plate jointly form a front cavity; the inner connecting plate is connected with the inner side wall, the top wall of the front longitudinal beam and the inner side wall and the bottom wall of the side reinforcing beam; the side connecting plate is connected with the top wall of the front longitudinal beam and the bottom wall of the side reinforcing beam respectively.

[0011] Further, the rear reinforcing cavity is arranged behind the front reinforcing cavity; the lower part of the rear reinforcing cavity is connected with the outer side wall of the front longitudinal beam; the upper part of the rear reinforcing cavity is connected with the inner side wall and the bottom wall of the side reinforcing beam.

[0012] Further, the rear reinforcing cavity comprises a front reinforcing piece, a rear connecting plate and a front upper cover plate; the front reinforcing piece, the rear connecting plate and the front upper cover plate are overlapped two by two to jointly form a rear cavity.

[0013] Further, the front reinforcing piece is located at the front side of the rear connecting plate, and the front upper cover plate is arranged at the inner side of the front reinforcing piece and the rear connecting plate; the front reinforcing piece, the rear connecting plate and the front upper cover plate are all welded with the outer side wall of the front longitudinal beam and the inner side wall or the bottom wall of the side reinforcing beam.

[0014] Further, the front cabin connecting structure further comprises a front anti-collision beam assembly, and the front anti-collision beam assembly comprises a front anti-collision beam body and energy absorption boxes arranged at the two sides of the front anti-collision beam body; the rear part of the energy absorption box protrudes into the front longitudinal beam, and the energy absorption box and the front longitudinal beam are fixed through bolts.

[0015] Further, the lower part of the front reinforcing cavity is also fixed with the front longitudinal beam and the energy absorption box through the bolts.

[0016] Further, the front underbody structure further comprises an upper cross beam, the upper cross beam comprises a main body portion perpendicular to the front longitudinal beam and connecting portions arranged on both sides of the main body portion and inclined relative to the main body portion; the side reinforcement beam is arranged outward and rearward relative to the front longitudinal beam; the connecting portions are connected to the front portions of the side reinforcement beam.

[0017] Further, the front underbody structure further comprises a shock absorber seat and a shock absorber seat connecting cross beam, the shock absorber seat comprises a front wheel cover and a shock absorber mounting plate; the rear portion of the front longitudinal beam is connected to the inner side of the front wheel cover; the side reinforcement beam is connected to the outer side of the front wheel cover; the two ends of the shock absorber seat connecting cross beam are connected to the shock absorber seat respectively; the front side of the front wheel cover is connected to the rear reinforcement cavity.

[0018] Further, the side reinforcement beam comprises a side reinforcement beam outer plate, a side reinforcement beam outer plate front segment and a side reinforcement beam inner plate; the side reinforcement beam outer plate and the side reinforcement beam outer plate front segment are arranged along the front-rear direction, and the side reinforcement beam inner plate is arranged on the inner side of the side reinforcement beam outer plate and the side reinforcement beam outer plate front segment; the side reinforcement beam outer plate, the side reinforcement beam outer plate front segment and the side reinforcement beam inner plate jointly form a cavity.

[0019] The embodiment of the present application further provides a vehicle comprising the front underbody connecting structure.

[0020] The side reinforcement beam of the present application is arranged above the front longitudinal beam and connected to the front longitudinal beam through the front reinforcement cavity and the rear reinforcement cavity, the two cavities provide Z-direction support for the side reinforcement beam, can reduce resonance at the wheel cover, improve the torsional stiffness of the whole vehicle body, and the front reinforcement cavity, the rear reinforcement cavity, the front longitudinal beam and the side reinforcement beam jointly form a force transmission path, which can effectively disperse stress and improve force transmission efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the front underbody connecting structure of the exemplary embodiment of the present application.

[0022] Figure 2 is Figure 1 is a top view of the front underbody connecting structure shown.

[0023] Figure 3 is Figure 1 is a partial perspective view of the front underbody connecting structure shown.

[0024] Figure 4 is Figure 3 is a perspective view of the front underbody connecting structure from another angle shown.

[0025] Figure 5 is Figure 3 is a perspective view of the front underbody connecting structure from still another angle shown.

[0026] Figure 6 is Figure 1 a partial perspective view of a rear reinforcement cavity of the front nacelle connection structure shown in

[0027] Figure 7 is Figure 5 a partial perspective view of a front reinforcement cavity of the front nacelle connection structure shown in

[0028] Figure 8 is Figure 7 a perspective view of the front reinforcement cavity shown in

[0029] Figure 9 is Figure 8 a perspective view of the inner connection plate shown in

[0030] Figure 10 is Figure 8 a perspective view of the side connection plate shown in

[0031] Figure 11 is a perspective view of the front reinforcement cavity assembled with the rear reinforcement cavity.

[0032] Figure 12 is Figure 11 another perspective view of the front reinforcement cavity assembled with the rear reinforcement cavity shown in

[0033] Figure 13 is Figure 11 yet another perspective view of the front reinforcement cavity assembled with the rear reinforcement cavity shown in

[0034] Figure 14 is Figure 11 a perspective view of the front reinforcement shown in

[0035] Figure 15 is Figure 11 a perspective view of the rear connection plate shown in

[0036] Figure 16 is Figure 11 a perspective view of the front upper cover plate shown in

[0037] BRIEF DESCRIPTION OF THE DRAWINGS:

[0038] 10, front longitudinal beam; 11, top wall; 12, inner side wall; 13, outer side wall; 14, upper flange; 20, front wheelhouse side reinforcement beam assembly; 21, side reinforcement beam; 211, side reinforcement beam outer plate; 212, side reinforcement beam outer plate front section; 213, side reinforcement beam inner plate; 2131, inner side wall; 2132, bottom wall; 214, cavity; 22, front reinforcement cavity; 221, inner connecting plate; 2211, main plate portion; 2212, side plate portion; 2213, connecting piece; 2214, first mounting hole; 2215, through hole; 222, side connecting plate; 2221, main plate portion; 2222, upper flange; 2223, lower flange; 2224, front fold edge; 2225, rear fold edge; 2226, second mounting hole; 223, front cavity; 23, rear reinforcement cavity; 231, front reinforcement; 2311, first main plate portion; 2312, second main plate portion; 2313, connecting portion; 2314, upper flange; 2315, side flange; 232, rear connecting plate; 2321, main plate portion; 2322, upper flange; 2323, lower flange; 2324, front fold edge; 2325, rear fold edge; 233, front upper cover plate; 2331, main plate portion; 2332, upper flange; 2333, lower flange; 2334, front fold edge; 2335, rear fold edge; 234, rear cavity; 30, front bumper beam assembly; 31, front bumper beam body; 32, energy absorption box; 321, bolt; 40, upper cross beam; 41, main body portion; 42, connecting portion; 50, cavity; 60, shock absorber seat; 61, front wheelhouse; 62, shock absorber mounting plate; 70, shock absorber seat connecting cross beam. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments (or, the implementation manners) of the present application will be clearly and completely described below with reference to the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0040] If the terms related to directionality or position relationship (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.) are involved in the embodiments of the present application, such terms are only used to explain the relative position relationship, motion condition, etc. between the components in a certain specific posture (as shown in the drawings); if the specific posture changes, the directionality or position relationship also changes accordingly. In addition, the terms “first”, “second”, etc. involved in the embodiments of the present application are only used for the convenience of description, and cannot be understood as indicating or implying relative importance.

[0041] Reference is made to Figures 1 to 3As shown, the application provides a front engine compartment connecting structure, which comprises a front longitudinal beam 10 and a front wheel cover side reinforcement beam assembly 20. The front wheel cover side reinforcement beam assembly 20 comprises a side reinforcement beam 21, a front reinforcement cavity 22 and a rear reinforcement cavity 23. The side reinforcement beam 21 is located above the front longitudinal beam 10 and connected with the front longitudinal beam 10 through the front reinforcement cavity 22 and the rear reinforcement cavity 23.

[0042] By setting the front reinforcement cavity 22 and the rear reinforcement cavity 23, the torsional stiffness of the whole vehicle and the modal at the wheel cover can be effectively improved, the resonance at the wheel cover can be reduced, and the torsional stiffness of the whole vehicle body can be improved. The side reinforcement beam 21 is located above the front longitudinal beam 10 and connected with the front longitudinal beam 10 through the front reinforcement cavity 22 and the rear reinforcement cavity 23, which provides a new force transmission path, effectively disperses the stress, improves the force transmission efficiency, prolongs the fatigue endurance life, and meets the performance requirements of the vehicle under various extreme working conditions.

[0043] The front longitudinal beam 10, the side reinforcement beam 21, the front reinforcement cavity 22 and the rear reinforcement cavity 23 are arranged in a ring-shaped frame structure, which together forms a frame structure 50, thereby forming a ring-shaped force transmission path. The structure near the cavity 50 considers the connection in X, Y and Z directions, and improves the local stiffness. In the case of ensuring the continuity of the force transmission path, the area of the cavity 50 is minimized to increase the lower arrangement space, so as to meet the requirements of the vehicle headlight arrangement space and light weight; at the same time, it is parallel to Z direction to meet the installation requirements.

[0044] The moment of inertia and cross-sectional area of the cavity 50 are used to transmit energy, disperse force and improve the performance of the front wheel cover assembly. According to the CAE topological optimization analysis, the cavity 50 effectively improves the force transmission path of the front engine compartment connecting structure, greatly contributes to the road noise and vibration suppression of NVH, and plays a decisive role in safety and durability.

[0045] The front engine compartment connecting structure further comprises a front crash beam assembly 30 and an upper cross beam 40. The frontal impact force from the front of the vehicle is transmitted to the rear of the vehicle body through the front crash beam assembly 30, the upper cross beam 40, the front longitudinal beam 10 and the side reinforcement beam 21 in sequence.

[0046] The front crash beam assembly 30 comprises a front crash beam body 31 and energy absorption boxes 32 arranged on both sides of the front crash beam body 31. The rear part of the energy absorption box 32 protrudes into the front longitudinal beam 10, and the energy absorption box 32 and the front longitudinal beam 10 are fixed by bolts 321.

[0047] The upper cross beam 40 comprises a main body part 41 perpendicular to the front longitudinal beam 10 and connecting parts 42 arranged on both sides of the main body part 41 and inclined relative to the main body part 41. The side reinforcement beam 21 is first outwardly offset and then rearwardly protruded relative to the front longitudinal beam 10. The connecting part 42 is connected with the front part of the side reinforcement beam 21.

[0048] The offset arrangement of the side reinforcement beam 21 can better absorb the impact force from the side, disperse the collision energy, and further enhance the safety of the vehicle in a collision. At the same time, the side reinforcement beam 21 is raised in the Z direction by two cavities, which saves a large layout space and is beneficial to the arrangement of the headlamp and the hood lock of the vehicle.

[0049] The front engine compartment connecting structure further comprises a shock absorber seat 60 and a shock absorber seat connecting beam 70. The shock absorber seat 60 comprises a front wheel cover 61 and a shock absorber mounting plate 62. The rear part of the front longitudinal beam 10 is connected to the inner side of the front wheel cover 61. The side reinforcement beam 21 is connected to the outer side of the front wheel cover 61. The two ends of the shock absorber seat connecting beam 70 are respectively connected to the shock absorber seat 60. The rear reinforcement cavity 23 is connected to the front side of the front wheel cover 61. The upper cross beam 40 and the two side reinforcement beams 21 on both sides thereof can form a semi-annular force transmission structure, and the upper cross beam 40 and the side reinforcement beams 21 on both sides thereof further jointly enclose a closed annular frame structure with the shock absorber seat 60 on both sides of the shock absorber seat connecting beam 70; the force transmission in various directions can be dispersed, and the torsional stiffness of the entire vehicle body is improved.

[0050] Referring to Figures 4 to 7 As shown, the front longitudinal beam 10 comprises a top wall 11, an inner side wall 12, an outer side wall 13 and an upper flange 14 fixed together. The front reinforcement cavity 22 is arranged at the front end of the front longitudinal beam 10 and the side reinforcement beam 21. The lower part of the front reinforcement cavity 22 is connected to the top wall 11 and the inner side wall 12 of the front longitudinal beam 10. The upper part of the front reinforcement cavity 22 is connected to the inner side wall 2131 and the bottom wall 2132 of the side reinforcement beam 21.

[0051] The front reinforcement cavity 22 is welded to the top wall 11 and the inner side wall 12 of the front longitudinal beam 10, and the inner side wall 2131 and the bottom wall 2132 of the side reinforcement beam 21, respectively, which can better absorb and disperse the impact energy in a collision, thereby reducing the damage to the vehicle. At the same time, the process is simple, and compared with the same type of structure, only the front longitudinal beam 10 and the side reinforcement beam 21 need to be welded to the front reinforcement cavity 22, without the need for additional assembly stations and working hours, and the cost is lower.

[0052] The side reinforcement beam 21 comprises a side reinforcement beam outer plate 211, a side reinforcement beam outer plate front section 212 and a side reinforcement beam inner plate 213. The side reinforcement beam outer plate 211 and the side reinforcement beam outer plate front section 212 are arranged in the front-rear direction, and the side reinforcement beam inner plate 213 is arranged on the inner side of the side reinforcement beam outer plate 211 and the side reinforcement beam outer plate front section 212. The side reinforcement beam outer plate 211, the side reinforcement beam outer plate front section 212 and the side reinforcement beam inner plate 213 jointly form a cavity 214.

[0053] The side reinforcement beam 21 is made of high-strength steel and meets the requirements of torsional stiffness, structural durability, NVH road noise, VD handling, strength, and dynamic stiffness, etc. The design of the cavity 214 can significantly improve the rigidity of the overall structure, especially when subjected to external impact, which helps to resist deformation and protect the safety of the passenger compartment.

[0054] The front reinforcement cavity 22 includes an inner connecting plate 221 and a side connecting plate 222, which together form a front cavity 223. The inner connecting plate 221 is welded to the inner side wall 12, the top wall 11 of the front longitudinal beam 10, and the inner side wall 2131 and the bottom wall 2132 of the side reinforcement beam 21. The side connecting plate 222 is welded to the top wall 11 of the front longitudinal beam 10 and the bottom wall 2132 of the side reinforcement beam 21, respectively. Multiple connection points optimize force transmission, making the load distribution in the front engine compartment connection structure more uniform, which helps to improve impact resistance and overall stability.

[0055] Referring to Figures 8 to 10 As shown, the inner connecting plate 221 includes a main plate portion 2211, two side plate portions 2212 bent from the main plate portion 2211, and a plurality of connecting pieces 2213 arranged at the edges of the main plate portion 2211 and the two side plate portions 2212. The plurality of connecting pieces 2213 are welded to the inner side wall 12, the top wall 11, and the upper flange 14 of the front longitudinal beam 10, the inner side wall 2131 and the bottom wall 2132 of the side reinforcement beam 21, and the side connecting plate 222, respectively. The main plate portion 2211 is provided with a first mounting hole 2214.

[0056] The side connecting plate 222 includes a main plate portion 2221, an upper flange 2222, a lower flange 2223, a front fold 2224, and a rear fold 2225 arranged at the edges of the main plate portion 2221. The upper flange 2222 is welded to the bottom wall 2132 of the side reinforcement beam 21. The lower flange 2223 is welded to the top wall 11 of the front longitudinal beam 10. The upper portions of the front fold 2224 and the rear fold 2225 are welded to the inner connecting plate 221. The lower portions of the front fold 2224 and the rear fold 2225 are welded to the upper flange 14 of the front longitudinal beam 10. The main plate portion 2221 is provided with a second mounting hole 2226 aligned with the first mounting hole 2214 for a fixing member to pass through.

[0057] The lower portion of the front reinforcement cavity 22 is also fixed to the front longitudinal beam 10 and the energy absorption box 32 by bolts 321. The lower portion of the main plate portion 2211 of the front reinforcement cavity 22 is provided with a through hole 2215 located below the first mounting hole 2214, and the inner side wall 12 of the front longitudinal beam 10 and the rear portion of the energy absorption box 32 are provided with holes aligned with the through hole 2215. The bolts 321 are assembled into the through hole 2215 and the holes to fix the front reinforcement cavity 22 to the front longitudinal beam 10 and the energy absorption box 32.

[0058] Referring to Figures 11 to 13 As shown, the rear reinforcement cavity 23 is arranged behind the front reinforcement cavity 22. The lower part of the rear reinforcement cavity 23 is connected with the outer side wall 13 of the front longitudinal beam 10. The upper part of the rear reinforcement cavity 23 is connected with the inner side wall 2131 and the bottom wall 2132 of the side reinforcement beam 21.

[0059] Referring to Figures 14 to 16 As shown, the rear reinforcement cavity 23 comprises a front reinforcement 231, a rear connecting plate 232 and a front upper cover plate 233. The front reinforcement 231 is arranged in front of the rear connecting plate 232, and the front upper cover plate 233 is arranged in the inner side of the front reinforcement 231 and the rear connecting plate 232. The front reinforcement 231, the rear connecting plate 232 and the front upper cover plate 233 are connected with each other to form a rear cavity 234. The front reinforcement 231, the rear connecting plate 232 and the front upper cover plate 233 are all welded with the outer side wall 13 of the front longitudinal beam 10 and the inner side wall 2131 or the bottom wall 2132 of the side reinforcement beam 21.

[0060] The combination of the front reinforcement 231, the rear connecting plate 232 and the front upper cover plate 233 enhances the overall connection strength and stiffness. Through the joint design of these components, the load can be more evenly distributed inside the rear cavity 234, reducing local stress concentration and thus improving the impact resistance.

[0061] The front reinforcement 231 comprises a first main plate part 2311, a second main plate part 2312 and a connecting part 2313 connecting the first main plate part 2311 and the second main plate part 2312. The upper edge of the first main plate part 2311 is provided with an upper flange 2314, and the side edge of the second main plate part 2312 is provided with a side flange 2315. The upper flange 2314 is welded with the bottom wall 2132 of the side reinforcement beam 21, and the side flange 2315 is welded with the outer side wall 13 of the front longitudinal beam 10.

[0062] The rear connecting plate 232 comprises a main plate part 2321, an upper flange 2322, a lower flange 2323, a front flange 2324 and a rear flange 2325 arranged at the edge of the main plate part 2321. The upper flange 2322 is welded with the bottom wall 2132 of the side reinforcement beam 21. The lower flange 2323 is welded with the outer side wall 13 of the front longitudinal beam 10. The front flange 2324 is welded with the first main plate part 2311 and the second main plate part 2312. The rear flange 2325 is welded with the front upper cover plate 233.

[0063] The front upper cover plate 233 includes a main plate part 2331, and an upper turning edge 2332, a lower turning edge 2333, a front folding edge 2334 and a rear folding edge 2335 arranged at the edge of the main plate part 2331. The main plate part 2331 is welded with the rear connecting plate 232, and there are three welding points between the main plate part 2331 and the rear connecting plate 232. The upper turning edge 2332 is welded with the inner side wall 2131 of the side reinforcing beam 21. The lower turning edge 2333 is welded with the outer side wall 13 of the front longitudinal beam 10. The front folding edge 2334 is welded with the second main plate part 2312. The rear folding edge 2335 is welded with the shock absorber seat 60.

[0064] In the embodiments of the present application, the side reinforcing beam 21, the front reinforcing cavity 22, the front longitudinal beam 10 and the rear reinforcing cavity 23 are made of high-strength steel to improve the rigidity, and in addition, composite materials (such as carbon fiber reinforced plastic) can also be considered to replace part of the steel to reduce the weight and increase the strength and impact resistance in other directions.

[0065] When the front crash beam body 31 is subjected to a frontal collision force, the frontal collision force is transmitted from the energy absorption box 32 to the front longitudinal beam 10, and then to the front longitudinal beam 10 and the front reinforcing cavity 22, the rear reinforcing cavity 23 and the side reinforcing beam 21 to form a ring-shaped force transmission path. Since the front reinforcing cavity 22 and the rear reinforcing cavity 23 include a plurality of reinforcing members arranged in the Z direction: the inner connecting plate 221, the side connecting plate 222, the front reinforcing member 231, the rear connecting plate 232 and the front upper cover plate 233, and the rear reinforcing cavity 23 is connected with the front wheel cover 61, multi-channel force transmission can be achieved in the Z direction.

[0066] The energy absorption box 32, the front longitudinal beam 10, the side reinforcing beam 21, the front reinforcing cavity 22 and the rear reinforcing cavity 23 all form cavities, and the side reinforcing beam 21 can form a structure of large ring surrounding small ring, which not only meets the performance requirements, but also takes into account the lightweight and cost requirements, and the connection structure between each ring is simple and continuous, there is no force transmission interruption, and the lap joint design is reasonable, all of which adopt the welding process, and the process manufacturing is simple and easy to manufacture.

[0067] The front cabin connecting structure of the present application considers multiple targets overall, meets the performance requirements and arrangement requirements of the vehicle body torsional stiffness, NVH road noise, durability, safety, mounting point dynamic stiffness and the like, realizes the performance target through structural optimization, has no patching reinforcement phenomenon, so that the overall structure is more simple and efficient, and lightweight and cost reduction are also realized. The overall structure is strong, can effectively block NVH road noise, and has no modal and resonance problems, and has no abnormal sound and torsional stiffness problems under extreme working conditions.

[0068] The front cabin connecting structure of the application is provided with a rear reinforcing cavity 23 and a front reinforcing cavity 22 fixed with the front longitudinal beam 10 and the side reinforcing beam 21, which is simple and efficient, can effectively disperse the stress to all parts of the vehicle body structure, make the stress average, and improve the rigidity and modal of the overall structure. While meeting the performance requirements of torsional stiffness, structural durability, NVH road noise, VD control, strength and dynamic stiffness, the overall lightweight requirement of the vehicle is considered, and the structure is optimized to achieve the effect of reducing cost and weight.

[0069] The application also provides a vehicle comprising the above front cabin connecting structure.

[0070] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A front cabin connecting structure characterized by comprising: The front wheel cover side reinforcing beam assembly comprises a side reinforcing beam, a front reinforcing cavity and a rear reinforcing cavity; the side reinforcing beam is above the front longitudinal beam and is connected with the front longitudinal beam through the front reinforcing cavity and the rear reinforcing cavity; the front longitudinal beam, the side reinforcing beam, the front reinforcing cavity and the rear reinforcing cavity jointly form a frame structure; the front reinforcing cavity is arranged at the front end of the front longitudinal beam and the side reinforcing beam; the front reinforcing cavity comprises an inner connecting plate and a side connecting plate, and the inner connecting plate and the side connecting plate jointly form a front cavity; the rear reinforcing cavity is arranged behind the front reinforcing cavity.

2. The front-of-cabin connection structure according to claim 1, characterized by The lower part of the front reinforcing cavity is connected with the top wall and the inner side wall of the front longitudinal beam; the upper part of the front reinforcing cavity is connected with the inner side wall and the bottom wall of the side reinforcing beam.

3. The front-of-cabin connection structure according to claim 2, characterized by The inner connecting plate is connected with the inner side wall, the top wall of the front longitudinal beam and the inner side wall and the bottom wall of the side reinforcing beam; the side connecting plate is connected with the top wall of the front longitudinal beam and the bottom wall of the side reinforcing beam respectively.

4. The front-of-cabin connection structure according to claim 1, characterized by The lower part of the rear reinforcing cavity is connected with the outer side wall of the front longitudinal beam; the upper part of the rear reinforcing cavity is connected with the inner side wall and the bottom wall of the side reinforcing beam.

5. The front-of-cabin connection structure according to claim 4, characterized by The rear reinforcing cavity comprises a front reinforcing piece, a rear connecting plate and a front upper cover plate; the front reinforcing piece, the rear connecting plate and the front upper cover plate are lapped two by two to jointly form a rear cavity.

6. The front-of-cabin connection structure according to claim 5, characterized by The front reinforcing piece is located at the front side of the rear connecting plate, and the front upper cover plate is arranged at the inner side of the front reinforcing piece and the rear connecting plate; the front reinforcing piece, the rear connecting plate and the front upper cover plate are all welded with the outer side wall of the front longitudinal beam and the inner side wall or the bottom wall of the side reinforcing beam.

7. The front-of-cabin connection structure according to claim 1, characterized by The front anti-collision beam assembly comprises a front anti-collision beam body and energy absorption boxes arranged on both sides of the front anti-collision beam body; the rear part of the energy absorption box protrudes into the front longitudinal beam, and the energy absorption box and the front longitudinal beam are fixed through bolts.

8. The front-of-cabin connection structure according to claim 7, characterized by The lower part of the front reinforcing cavity is also fixed with the front longitudinal beam and the energy absorption box through the bolts.

9. The front-of-cabin connection structure according to claim 1, characterized by The upper cross beam comprises a main body part perpendicular to the front longitudinal beam and connecting parts arranged on both sides of the main body part and inclined relative to the main body part; the side reinforcing beam is arranged outward and rearward relative to the front longitudinal beam; the connecting parts are connected with the front part of the side reinforcing beam.

10. The front-of-cabin connection structure according to claim 1, characterized by The shock absorber seat comprises a front wheel cover and a shock absorber mounting plate; the rear part of the front longitudinal beam is connected with the inner side of the front wheel cover; the side reinforcing beam is connected with the outer side of the front wheel cover; the ends of the shock absorber seat connecting cross beam are connected with the shock absorber seat respectively; the rear reinforcing cavity is connected with the front side of the front wheel cover.

11. The front-of-cabin connection structure according to claim 1, characterized by The side reinforcement beam comprises a side reinforcement beam outer plate, a side reinforcement beam outer plate front section, and a side reinforcement beam inner plate; the side reinforcement beam outer plate and the side reinforcement beam outer plate front section are arranged along the front-rear direction, and the side reinforcement beam inner plate is arranged at the inner side of the side reinforcement beam outer plate and the side reinforcement beam outer plate front section; the side reinforcement beam outer plate, the side reinforcement beam outer plate front section, and the side reinforcement beam inner plate jointly form a cavity.

12. A vehicle characterized by comprising: The front cabin connecting structure as claimed in any one of claims 1 to 11.

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