Vehicle body structure and vehicle

Abstract

The present application relates to a vehicle body structure and a vehicle. The vehicle body structure comprises an inner side panel assembly and a front vehicle body assembly, wherein the inner side panel assembly comprises a front pillar and a hinge reinforcement plate assembly fixed to the front pillar; the front vehicle body assembly is connected to the inner side panel assembly, and comprises a front floor assembly and a front compartment arranged at a top end of the front floor assembly; a sill reinforcement member is provided on the front floor assembly, and the sill reinforcement member is located at a junction between the front floor assembly and the front compartment; a chamber structure is formed between the front vehicle body assembly and the front pillar; the hinge reinforcement plate assembly and the sill reinforcement member are both located inside the chamber structure; and the hinge reinforcement plate assembly is further fixed to the front floor assembly and the front compartment. In the present invention, the hinge reinforcement plate assembly located in the chamber structure is not only connected to the front pillar, but is also fixed to the front floor assembly and the front compartment. When a vehicle door and a hinge reinforcement plate are subjected to a relatively large impact in a Y direction, the force can be transmitted to the front vehicle body assembly and the inner side panel assembly through the hinge reinforcement plate.

Description

A vehicle body structure and vehicle

[0001] This application claims priority to Chinese Patent Application No. CN202411941443.0, filed on December 26, 2024, entitled “A Vehicle Body Structure”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the automotive field, and in particular to a vehicle body structure and a vehicle. Background Technology

[0003] Automobile safety is the most important indicator among the many performance settings of a car. How to reduce the intrusion into the passenger compartment in a collision accident, provide sufficient room for safety systems such as seats, seat belts, curtain airbags, and airbags to perform, and reduce or avoid occupant injuries are the goals that all car manufacturers strive for.

[0004] Traditional vehicle body structure design addresses frontal collisions through energy absorption and force transmission paths and performance optimizations of components such as anti-collision beams, engine compartment longitudinal beams, passenger compartment longitudinal beams, upper side beams, and passenger compartment door ring structures. Side impacts are addressed through energy absorption and force transmission paths and performance optimizations of structures such as body sill beams, door anti-collision beams, passenger compartment door ring structures, and body crossbeams. However, due to the relatively small side dimensions of vehicles and the often insufficient reserved space and capacity for side energy absorption, the main method for dealing with side collisions is to increase side rigidity and reduce the intrusion into the driver's side space.

[0005] Current technologies improve the door sill body by extending it along the X-direction of the vehicle body to form an extension section. The end of this extension section is designed with a bowl-shaped structure, and reinforcing bosses and ribs are incorporated into the A-pillar inner panel. This design, which extends the door sill to form the extension section and incorporates bowl-shaped and locally reinforced bosses and ribs, improves the vehicle's torsional rigidity and reduces passenger compartment intrusion during a collision, replacing the door sill connecting plate. Because the door sill body extends forward to the wheel well edge and the bowl-shaped structure at the front end strengthens the side profile, the lower part of the front pillar experiences a significant change in material thickness and cross-sectional structure compared to the upper part. In side impacts, this design can easily create stress concentration areas at the overlap between the door sill extension and the upper part of the lower A-pillar inner panel. During a severe side impact, these stress concentration areas may cause overall displacement of the vehicle floor, leading to lateral shear deformation of the front pillar and affecting the door's stability. Summary of the Invention

[0006] This application provides a vehicle body structure and vehicle that can solve the problem in the related art where stress concentration areas easily form in the upper overlapping area of ​​the door sill extension and the lower A-pillar inner panel when the front pillar is subjected to a side collision, resulting in lateral shear deformation of the front pillar.

[0007] A first aspect of this application provides a vehicle body structure, comprising: a side inner panel assembly and a front body assembly, wherein the side inner panel assembly includes a front pillar and a hinge reinforcement plate assembly, the hinge reinforcement plate assembly being fixed to the front pillar; the front body assembly is connected to the side inner panel assembly, the front body assembly including a front floor assembly and a front engine compartment disposed at the top of the front floor assembly, a sill reinforcement member being disposed on the front floor assembly, the sill reinforcement member being located at the junction of the front floor assembly and the front engine compartment; wherein a cavity structure is formed between the front body assembly and the front pillar, the hinge reinforcement plate assembly and the sill reinforcement member are both located inside the cavity structure, and the hinge reinforcement plate assembly is also fixed to the front floor assembly and the front engine compartment.

[0008] Based on the above technical content, in this application, a cavity structure is set between the front body assembly and the front pillar. The hinge reinforcement plate assembly located in the cavity structure is not only connected to the front pillar, but also fixed to the front floor assembly and the front engine compartment, thereby improving the rigidity of the side panel assembly and the front body assembly. When the door and the hinge reinforcement plate are subjected to a large Y-axis impact, the force can be transferred to the front body assembly and the side panel assembly through the hinge reinforcement plate, reducing the large deformation or failure of the front door mounting point caused by the cavity compression of the front pillar. A sill reinforcement is set in the cavity structure. The sill reinforcement is located at the junction of the front floor assembly and the front engine compartment, thereby improving the structural rigidity of the junction of the front pillar, the front floor assembly and the front engine compartment, reducing the bending deformation of the joint during the side collision, and avoiding transverse shear fracture during the frontal collision.

[0009] In one embodiment, the hinge reinforcement plate assembly includes an upper reinforcement plate assembly and a lower reinforcement plate assembly. The upper reinforcement plate assembly includes an upper hinge reinforcement plate and an upper hinge connecting plate. The upper hinge reinforcement plate is connected to the upper hinge connecting plate and the upper hinge connecting plate is fixed to the front column. The lower reinforcement plate assembly includes a lower hinge reinforcement plate, a lower hinge upper connecting plate, and a lower hinge lower connecting plate. The lower hinge reinforcement plate is fixed between the lower hinge upper connecting plate and the lower hinge lower connecting plate.

[0010] Furthermore, the lower hinge reinforcement plate, the upper lower hinge connecting plate, and the lower lower hinge connecting plate are welded together to form the lower reinforcement plate assembly. To improve the material utilization rate of the lower hinge reinforcement plate and reduce the manufacturing cost of the parts, in this embodiment, the upper lower hinge connecting plate is formed separately and welded to the lower hinge reinforcement plate. The welding surface of the lower hinge reinforcement plate and the reference surface of the connecting plate of the lower lower hinge connecting plate are welded together, and there is a gap between the front pillar and the hinge reinforcement plate assembly, that is, the welding surface maintains a gap of at least 3mm with the front door ring to avoid abnormal noise from contact between the welding edge and the front door ring when the vehicle is twisted.

[0011] In one embodiment, the lower hinge reinforcing plate is a groove-shaped structure. The lower hinge reinforcing plate includes a reinforcing plate reference surface, with a front flange and a rear flange fixed on both sides of the reinforcing plate reference surface respectively. A welding surface is provided at the end of the reinforcing plate reference surface, and a connecting plane is provided at the end of the rear flange. On the upper connecting plate of the lower hinge, there are a first upper connecting plate flange extending towards the bottom end of the vehicle body and a second upper connecting plate flange extending towards the top end of the vehicle body. The first upper connecting plate flange is fixedly attached to the reinforcing plate reference surface, the front flange, and the rear flange. There is an acute angle between the upper connecting plate of the lower hinge and the horizontal plane. The lower connecting plate of the lower hinge includes a connecting plate reference surface, which is connected to the lower hinge reinforcing plate. A flanging surface is provided on one side of the connecting plate reference surface, and a mounting surface is provided at the bottom end of the connecting plate reference surface. There is an acute angle between the mounting surface and the horizontal plane, and there is an acute angle between the mounting surface and the reinforcing plate reference surface.

[0012] Furthermore, to facilitate the closing of the door, the hinge axis of a passenger vehicle is often set to an inward inclination angle of 3 - 5 degrees. In this application, the angle between the mounting surface and the horizontal plane is 10 - 25 degrees, that is, the angle between the mounting surface and the reinforcing plate reference surface is between 65 - 80 degrees, forming a negative angle with the reinforcing plate reference surface. The stamping process cannot directly form the mounting surface by flanging on the reinforcing plate reference surface. Therefore, the lower connecting plate of the lower hinge is separately provided and welded to the lower hinge reinforcing plate.

[0013] In one embodiment, the front floor assembly includes: an inner sill panel assembly and a front floor assembly. The inner sill panel assembly includes a front inner sill panel and a rear inner sill panel. The rear inner sill panel is disposed at the end of the front inner sill panel. A sill reinforcement is provided on the front inner sill panel. A groove-shaped structure is formed between the front inner sill panel and the front engine compartment, and a chamber structure is formed between this groove-shaped structure and the front pillar. The front floor assembly is fixed to the inner sill panel assembly.

[0014] For the front floor assembly, the front inner sill panel is a groove-shaped structure. The upper trimming at one end and the rear trimming at the other end of the front inner sill panel are in a "Ji" shape. The front inner sill panel includes a front inner sill panel reference surface, and a flange surface is provided at one end of the front inner sill panel reference surface.

[0015] The rear inner sill panel is a groove-shaped structure, and the groove cross-sectional width and depth of the front inner sill panel and the rear inner sill panel are the same.

[0016] The sill reinforcement has a reinforcement reference surface, and the circumference of the reinforcement reference surface is respectively provided with a rear flange, a front flange, an upper flange, and a lower flange. The rear flange, the front flange, the upper flange, and the lower flange are all attached and fixed to the front of the inner sill plate. The sill reinforcement is positioned higher than the rear of the inner sill plate, and there is a gap between the rear flange and the hinge reinforcement plate assembly.

[0017] The front floor assembly includes a floor body, on which are provided an outer reinforcing crossbeam, an outer reinforcing longitudinal beam structure, a seat front crossbeam, an inner reinforcing crossbeam, and a central channel. The outer reinforcing longitudinal beam structure, the central channel, the outer reinforcing crossbeam, the inner reinforcing crossbeam, and the seat front crossbeam form a mutually perpendicular "well" shaped frame structure.

[0018] The outer reinforcing beam of the floor includes a connecting surface, which is pressed against the top of the outer reinforcing longitudinal beam structure and is fixed to the floor body. Both ends of the connecting surface are provided with bonding surfaces, which are fixed to the floor body. An outer beam flange is also provided on the connecting surface, which is fixed to the front of the inner door sill.

[0019] The flange structure at the end of the front crossbeam of the seat is fitted and fixed to the rear of the inner panel of the door sill.

[0020] In one embodiment, the forward nacelle includes: a base surface, a front baffle, an inner fender panel, an upper part of the nacelle floor connecting plate, a lower part of the nacelle floor connecting plate, an outer reinforcing longitudinal beam extension plate, a passageway front portion, and a front longitudinal beam side plate. The front baffle is located at the end of the base surface and is connected to the front floor assembly. The inner fender panel is located on one side of the base surface and is connected to the front floor assembly. A groove-like structure is formed between the inner fender panel and the front floor assembly, and this groove-like structure forms a cavity structure with the front pillar. The sill reinforcement is attached to the inner fender panel. On the reference surface; the upper part of the cabin floor connecting plate is located between the base surface and the inner fender panel; the lower part of the cabin floor connecting plate is located between the base surface and the inner fender panel, and is connected to the bottom end of the upper part of the cabin floor connecting plate and the front floor assembly, and the lower part of the cabin floor connecting plate is configured as a groove-shaped opening structure; the outer reinforcing longitudinal beam extension plate is located between the base surface and the front baffle; the front part of the passage is located between the base surface and the front baffle, and extends along the length of the vehicle body; the front longitudinal beam side plate is located on one side of the lower part of the cabin floor connecting plate, and extends along the length of the vehicle body.

[0021] In one embodiment, the fender inner panel has a groove-like structure, and the lower edge of the fender inner panel is U-shaped, with the lower edge of the fender inner panel being fitted and fixed to the front floor assembly; one upper end of the naval floor connecting plate is provided with a naval floor flange, which is fitted and fixed to the lower edge of the fender inner panel; one lower end of the naval floor connecting plate is provided with a naval floor connecting plate flange, which is located below the lower edge of the fender inner panel; one end of the front floor assembly is located at the top of the outer reinforcing longitudinal beam extension plate; both the upper and lower parts of the fender inner panel are connected and fixed to the hinge reinforcing plate assembly.

[0022] In one embodiment, the inner side panel assembly further includes: a sill outer panel, a windshield support outer panel, an upper sill portion, and a lower sill portion. The sill outer panel is connected to the front pillar and hinge reinforcement plate assembly. The windshield support outer panel is disposed at the top of the front pillar. The upper sill portion is connected to the front pillar. The first and second upper surfaces of the upper sill portion form an angle with the horizontal plane. The height difference between the top of the upper sill portion and the reference surface of the sill reinforcement is 10-20 mm. The height difference between the reference surface of the lower part of the cabin floor connecting plate is greater than [value missing]. The upper part of the sill has a first chamber and a second chamber, which is the sum of the height difference between the inflection point of the lower end of the reference surface of the sill reinforcement and the highest point of the upper part of the sill. The lower part of the sill is connected to the front post. There is a gap between the front post and the hinge reinforcement plate assembly. The reference surface of the inner sill plate of the sill reinforcement is higher than the height of the first mounting nut on the hinge reinforcement plate assembly in the height direction, and the height difference between the reference surface of the inner sill plate of the sill reinforcement and the first mounting nut on the hinge reinforcement plate assembly is greater than or equal to a set value.

[0023] In one embodiment, the vehicle body structure further includes a collision connecting plate, the collision connecting plate including a first extension plate, a groove and a second extension plate, the groove being disposed between the first extension plate and the second extension plate, the first extension plate being connected to the front pillar and hinge reinforcement plate assembly, the second extension plate being connected to the front engine compartment, the second extension plate also being connected to the front floor assembly, and a gap being provided between the groove and the front floor assembly and between the groove and the side inner panel assembly.

[0024] Furthermore, after the front body assembly and the side inner panel assembly are assembled, one end of the collision connecting plate is fixed to the side inner panel assembly using bolts, and the other end is fixed to the sill inner panel assembly. The collision connecting plate only fits against the side inner panel assembly and the sill inner panel assembly at the bolt connection point. The X-direction distance between the groove and the side inner panel assembly and the sill inner panel assembly is not less than 3mm to avoid interference with the collision connecting plate due to part deviations in the side inner panel assembly and the sill inner panel assembly.

[0025] In one embodiment, the lower hinge reinforcing plate, the lower hinge upper connecting plate, and the lower hinge lower connecting plate are welded to form the lower reinforcing plate assembly.

[0026] Furthermore, to improve the material utilization rate of the lower hinge reinforcement plate and reduce the manufacturing cost of the parts, the upper connecting plate of the lower hinge in this embodiment is formed separately and welded to the lower hinge reinforcement plate. The welding surface of the lower hinge reinforcement plate and the reference surface of the connecting plate of the lower connecting plate of the lower hinge are welded together, and there is a gap between the front pillar and the hinge reinforcement plate assembly, that is, the welding surface and the front door ring maintain a gap of at least mm, so as to avoid abnormal noise from contact between the welding edge and the front door ring when the vehicle is twisted.

[0027] In one embodiment, the angle between the upper connecting plate of the lower hinge and the horizontal plane ranges from degrees to degrees.

[0028] Furthermore, the second flange of the upper connecting plate of the lower hinge is fitted with the reference surface of the inner fender of the front engine compartment. The second flange of the upper connecting plate and the inner fender of the front engine compartment are connected by bolts that pass through the through holes of the inner fender along the direction from inside the vehicle to outside the vehicle and are tightened onto the welding nuts of the upper connecting plate of the lower hinge.

[0029] In one embodiment, the angle between the mounting surface and the horizontal plane ranges from degrees to degrees, and / or the angle between the mounting surface and the reference surface of the reinforcing plate ranges from degrees to degrees.

[0030] Furthermore, to facilitate door closure, the hinge axis of passenger vehicles is often set with an inward tilt angle of ~ degrees. In this application, the angle between the mounting surface and the horizontal plane is ~ degrees, that is, the angle between the mounting surface and the reference surface of the reinforcing plate is between ~ degrees, forming a negative angle with the reference surface of the reinforcing plate. The stamping process cannot directly form the mounting surface by flanging on the reference surface of the reinforcing plate. Therefore, a separate lower hinge connecting plate is set to be welded to the lower hinge reinforcing plate.

[0031] In one embodiment, the fixing point of the collision connecting plate and the inner side panel assembly is located on the rear flange of the lower hinge reinforcement plate.

[0032] Furthermore, the fixing point between the collision connection plate and the sill inner panel assembly also serves to connect to the front longitudinal beam side panel. This connection point is located on the front part of the sill inner panel, and at least one fixing point is located in the cavity between the sill reinforcement and the fender inner panel. The purpose of this design is that when the front pillar is subjected to a large impact, the front pillar will move towards the fender inner panel. The sill reinforcement and the fender inner panel can wrap around the hinge reinforcement plate and the front pillar, reducing the movement of the lower hinge reinforcement plate and the front pillar into the vehicle and preventing the lower part of the front pillar from bending significantly into the vehicle or towards the rear.

[0033] A second aspect of this application provides a vehicle, including:

[0034] Vehicle body;

[0035] The vehicle body structure described in any of the above-mentioned embodiments, wherein the vehicle body structure is disposed on the vehicle body.

[0036] The beneficial effects of the technical solutions provided in this application include:

[0037] This application provides a vehicle body structure and a vehicle. In the vehicle body structure, a cavity structure is provided between the front body assembly and the front pillar. The hinge reinforcement plate assembly located in the cavity structure is not only connected to the front pillar, but also fixed to the front floor assembly and the front engine compartment, thereby improving the rigidity of the side panel assembly and the front body assembly. When the door and the hinge reinforcement plate are subjected to a large Y-axis impact, the force can be transferred to the front body assembly and the side panel assembly through the hinge reinforcement plate, reducing the large deformation or failure of the front door mounting point caused by the cavity compression of the front pillar. A sill reinforcement is provided in the cavity structure. The sill reinforcement is located at the junction of the front floor assembly and the front engine compartment, thereby improving the structural rigidity of the junction of the front pillar, the front floor assembly and the front engine compartment, reducing the bending deformation of the joint during side impact, and avoiding lateral shear fracture during frontal impact. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 is a schematic diagram of the front of the body-in-white provided in an embodiment of this application;

[0040] Figure 2 is a schematic diagram of the side inner panel assembly provided in an embodiment of this application;

[0041] Figure 3 is a schematic diagram of the side inner panel assembly provided in an embodiment of this application;

[0042] Figure 4 is a schematic diagram of the hinge reinforcement plate assembly provided in an embodiment of this application;

[0043] Figure 5 is a schematic diagram of the hinge reinforcement plate assembly provided in an embodiment of this application;

[0044] Figure 6 is a cross-sectional view at point AA in Figure 5;

[0045] Figure 7 is a schematic diagram of the front floor assembly provided in an embodiment of this application;

[0046] Figure 8 is a schematic diagram of the front floor assembly provided in an embodiment of this application;

[0047] Figure 9 is a schematic diagram of the forward engine compartment provided in an embodiment of this application;

[0048] Figure 10 is a schematic diagram of the forward engine compartment provided in an embodiment of this application;

[0049] Figure 11 is a schematic diagram of the front vehicle body assembly provided in an embodiment of this application;

[0050] Figure 12 is a schematic diagram of the front vehicle body assembly provided in an embodiment of this application;

[0051] Figure 13 is a schematic diagram of the side inner panel assembly and the front body assembly provided in the embodiments of this application;

[0052] Figure 14 is a schematic diagram of the side inner panel assembly and the front body assembly provided in the embodiments of this application;

[0053] Figure 15 is a schematic cross-sectional view of the body-in-white provided in an embodiment of this application;

[0054] Figure 16 is a cross-sectional view at point BB in Figure 15;

[0055] Figure 17 is a cross-sectional view at point CC in Figure 15.

[0056] Explanation of reference numerals in the attached drawings: 1. Side panel assembly; 11. Front pillar; 12. Door sill outer panel; 13. Window support outer panel; 14. Upper hinge reinforcement plate; 15. Upper hinge connecting plate; 16. Lower hinge reinforcement plate; 1601. Reinforcement plate reference surface; 1602. Front flange; 1603. Rear flange; 1604. First mounting nut; 1605. Welding surface; 1606. Connecting plane; 1607. Second mounting nut; 17. Lower hinge upper connecting plate; 1701. First flange of upper connecting plate; 1702. Second flange of upper connecting plate; 1703. Welding surface; 18. Lower hinge connecting plate; 1801. Connecting plate reference surface; 1802. Lower connecting plate flange surface; 1803. Mounting surface; 19. Upper sill; 1901. First upper surface; 1902. Second upper surface; 1903. First chamber; 1904. Second chamber; 20. Lower sill; 2. Front floor assembly; 21. Front part of sill inner panel; 2101. Upper trim; 2102. Rear trim; 2103. Sill inner panel reference surface; 2104. Flange face; 22. Rear part of sill inner panel; 23. Sill Reinforcing component; 2301, Reinforcing component reference surface; 2302, Rear flange; 2303, Front flange; 2304, Upper flange; 2305, Lower flange; 24, Outer floor reinforcing crossbeam; 2401, Outer crossbeam flange; 2402, Fitting surface; 2403, Connecting surface; 25, Outer reinforcing longitudinal beam structure; 26, Floor body; 27, Seat front crossbeam; 28, Inner reinforcing crossbeam; 29, Central tunnel; 3, Forward cabin; 31, Fender inner panel; 3101, Lower edge; 32, Upper part of cabin floor connecting plate; 320 1. Cabin floor flange; 33. Lower part of cabin floor connecting plate; 3301. Cabin floor connecting plate flange; 3302. Through hole; 3303. Lower first flange; 3304. Lower second flange; 34. Front baffle; 3401. Baffle flange; 35. Outer reinforcing longitudinal beam extension plate; 36. Front of passage; 37. Front longitudinal beam side plate; 4. Collision connecting plate; 401. First extension plate; 402. Second extension plate; 403. Groove; 5. Screw; 6. Bolt; 7. Side panel front reinforcing plate; 8. Side panel outer plate. Detailed Implementation

[0057] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0058] This application provides a vehicle body structure and vehicle that can solve the problem in related technologies where stress concentration areas easily form in the upper overlapping area of ​​the door sill extension and the lower A-pillar inner panel when the front pillar is subjected to a side collision, resulting in lateral shear deformation of the front pillar.

[0059] Referring to Figures 1 to 17, a first aspect of this application provides a vehicle body structure, which includes: a side inner panel assembly 1 and a front body assembly. The side inner panel assembly 1 includes a front pillar 11 and a hinge reinforcement plate assembly, the hinge reinforcement plate assembly being fixed to the front pillar 11. The front body assembly is connected to the side inner panel assembly 1. The front body assembly includes a front floor assembly 2 and a front engine compartment 3 disposed at the top of the front floor assembly 2. A sill reinforcement member 23 is disposed on the front floor assembly 2, and the sill reinforcement member 23 is located at the junction of the front floor assembly 2 and the front engine compartment 3. A cavity structure is formed between the front body assembly and the front pillar 11. The hinge reinforcement plate assembly and the sill reinforcement member 23 are both located inside the cavity structure. The hinge reinforcement plate assembly is also fixed to the front floor assembly 2 and the front engine compartment 3.

[0060] In this application, a cavity structure is provided between the front body assembly and the front pillar 11. The hinge reinforcement plate assembly located in the cavity structure is not only connected to the front pillar 11, but also fixed to the front floor assembly 2 and the front engine compartment 3, thereby improving the rigidity of the side panel assembly 1 and the front body assembly. When the door and the hinge reinforcement plate are subjected to a large Y-axis impact, the force can be transferred to the front body assembly and the side panel assembly 1 through the hinge reinforcement plate, reducing the large deformation or failure of the front door mounting point caused by the cavity compression of the front pillar 11. A sill reinforcement member 23 is provided in the cavity structure. The sill reinforcement member 23 is located at the junction of the front floor assembly 2 and the front engine compartment 3, thereby improving the structural rigidity of the junction of the front pillar 11, the front floor assembly 2 and the front engine compartment 3, reducing the bending deformation of the joint during the side collision, and avoiding transverse shear fracture during the frontal collision.

[0061] Furthermore, the inner side panel assembly 1 also includes: an outer sill panel 12, an outer window pillar panel 13, an upper sill portion 19, and a lower sill portion 20. That is, the inner side panel assembly 1 consists of a front pillar 11, a hinge reinforcement plate assembly, an outer sill panel 12, an outer window pillar panel 13, an upper sill portion 19, and a lower sill portion 20. The inner side panel assembly 1 is equipped with an outer side panel 8 and a front side reinforcement plate 7.

[0062] The front pillar 11, sill outer panel 12, and windshield pillar outer panel 13 form the front door ring outer panel. Using laser welding technology, the front pillar 11 area, sill area, B-pillar area, and windshield side are integrated into a single unit. Alternatively, these areas can be divided into several stamped parts, namely the front pillar 11, sill outer panel 12, and windshield pillar outer panel 13, which are then spot-welded into an assembly. The sill outer panel 12 is connected to the front pillar 11 and the hinge reinforcement plate assembly, while the windshield pillar outer panel 13 is positioned at the top of the front pillar 11. The sill outer panel 12 is connected to the front pillar 11 and the lower hinge connecting plate 18 using self-tapping screws 5.

[0063] The hinge reinforcement plate assembly includes an upper reinforcement plate assembly and a lower reinforcement plate assembly. The upper reinforcement plate assembly includes an upper hinge reinforcement plate 14 and an upper hinge connecting plate 15. The upper hinge reinforcement plate 14 is connected to the upper hinge connecting plate 15 and the upper hinge reinforcement plate 14 and the upper hinge connecting plate 15 are fixed to the front column 11. The lower reinforcement plate assembly includes a lower hinge reinforcement plate 16, a lower hinge upper connecting plate 17 and a lower hinge lower connecting plate 18. The lower hinge reinforcement plate 16 is fixed between the lower hinge upper connecting plate 17 and the lower hinge lower connecting plate 18.

[0064] Specifically, the lower hinge reinforcing plate 16, the lower hinge upper connecting plate 17, and the lower hinge lower connecting plate 18 are welded together to form the lower reinforcing plate assembly.

[0065] To improve the material utilization rate of the lower hinge reinforcement plate 16 and reduce the manufacturing cost of the parts, the lower hinge upper connecting plate 17 in this embodiment is formed separately and welded to the lower hinge reinforcement plate 16. The welding surface 1605 of the lower hinge reinforcement plate 16 and the connecting plate reference surface 1801 of the lower hinge lower connecting plate 18 are welded together, and there is a gap between the front pillar 11 and the hinge reinforcement plate assembly, that is, the welding surface 1605 and the front door ring maintain a gap of at least 3mm to avoid abnormal noise from contact between the welding edge and the front door ring when the vehicle is twisted.

[0066] The lower hinge reinforcing plate 16 has a groove-shaped structure. The lower hinge reinforcing plate 16 includes a reinforcing plate reference surface 1601. A front flange 1602 and a rear flange 1603 are fixed on both sides of the reinforcing plate reference surface 1601, respectively. A welding surface 1605 is provided at the end of the reinforcing plate reference surface 1601, and a connecting plane 1606 is provided at the end of the rear flange 1603.

[0067] Referring to Figure 4, the lower hinge reinforcing plate 16 is a groove-shaped part formed by stamping. The reinforcing plate reference surface 1601 is located at the bottom of the groove structure. The front flange 1602 and the rear flange 1603 form an angle of not less than 3 degrees with the reinforcing plate reference surface 1601 to facilitate the stamping of the part. The lower part of the reinforcing plate reference surface 1601 is a welding surface 1605. The lower part of the front flange 1602 is provided with a second mounting nut 1607, and the lower part of the rear flange 1603 has a connecting plane 1606.

[0068] The lower hinge reinforcing plate 16 has several bosses, punches, and weld nuts 1703. It also has two hinge mounting holes, each containing a first mounting nut 1604. Referring to Figure 6, the upper connecting plate 17 of the lower hinge has a hole for the weld nut 1703, through which the first mounting nut 1604 passes. In some embodiments, the lower hinge reinforcing plate 16 only has hinge mounting holes, and the hinge itself has a weld nut 1703 or a riveting bolt 6, eliminating the need for a first mounting nut 1604 on the lower hinge reinforcing plate 16.

[0069] Referring to Figure 17, the reinforcing plate reference surface 1601 of the lower hinge reinforcing plate 16 is fitted with the front door ring; the reinforcing plate reference surface 1601 of the lower hinge reinforcing plate 16 and the upper connecting plate 17 of the lower hinge are fitted and welded together, and the welding surface 1605 maintains a gap of at least 3mm with the front door ring to avoid abnormal noise from contact between the welding edge and the front door ring when the vehicle is twisted. Referring to Figure 16, the left side of the front pillar 11 is fitted with the front flange 1602 of the lower hinge reinforcing plate 16, and the right side of the front pillar 11 is fitted with the rear flange 1603 of the lower hinge reinforcing plate 16.

[0070] The upper connecting plate 17 of the lower hinge is provided with a first flange 1701 extending towards the bottom of the vehicle body and a second flange 1702 extending towards the top of the vehicle body. Several welding nuts 1703 are provided on the second flange 1702 of the upper connecting plate. The first flange 1701 of the upper connecting plate is fitted and fixed to the reference surface 1601 of the reinforcing plate, the front flange 1602 and the rear flange 1603. The upper connecting plate 17 of the lower hinge has an angle with the horizontal plane, and the angle is an acute angle.

[0071] Specifically, the angle between the upper connecting plate 17 of the lower hinge and the horizontal plane is 3 to 5 degrees.

[0072] The second flange 1702 of the upper connecting plate of the lower hinge upper connecting plate 17 is attached to the reference surface of the inner fender 31 of the front engine compartment 3. The second flange 1702 of the upper connecting plate and the inner fender 31 of the front engine compartment 3 are connected by bolts 6, which pass through the through hole 3302 of the inner fender 31 of the fender along the direction from inside the vehicle to outside the vehicle, and are tightened onto the welding nut 1703 of the upper connecting plate of the lower hinge 17.

[0073] The lower hinge connecting plate 18 includes a connecting plate reference surface 1801, which is connected to the lower hinge reinforcing plate 16. A flange is provided on one side of the connecting plate reference surface 1801, and a mounting surface 1803 is provided at the bottom end of the connecting plate reference surface 1801. The lower hinge connecting plate 18 is L-shaped overall. The connecting plate reference surface 1801 is attached to and welded to the welding surface 1605 of the lower hinge reinforcing plate 16. The flange 1802 of the lower connecting plate is located at the rear of the connecting plate reference surface 1801 and is attached to and welded to the connecting plane 1606 of the lower hinge reinforcing plate 16. The mounting surface 1803 is located at the bottom of the lower hinge connecting plate 18.

[0074] Furthermore, the mounting surface 1803 has an angle with the horizontal plane, which is an acute angle, and the mounting surface 1803 has an angle with the reinforcing plate reference surface 1601, which is an acute angle.

[0075] Specifically, to facilitate door closure, the hinge axis of passenger vehicles is often set with an inward tilt angle of 3 to 5 degrees. The angle between the mounting surface 1803 and the horizontal plane in this application is 10 to 25 degrees, that is, the angle between the mounting surface 1803 and the reinforcing plate reference surface 1601 is between 65 and 80 degrees, forming a negative angle with the reinforcing plate reference surface 1601. The stamping process cannot directly form the mounting surface 1803 on the reinforcing plate reference surface 1601. Therefore, the lower hinge connecting plate 18 is separately welded to the lower hinge reinforcing plate 16.

[0076] The upper part of the threshold 19 is connected to the front post 11. The first upper surface 1901 and the second upper surface 1902 of the upper part of the threshold 19 have an angle with the horizontal plane. The upper part of the threshold 19 has a first chamber 1903 and a second chamber 1904. As shown in Figure 17, the first chamber 1903 is Q1 and the second chamber 1904 is Q2.

[0077] The mounting surface 1803 of the lower hinge connecting plate 18 is attached to the upper part of the second chamber 1904 of the sill 19.

[0078] In this embodiment, both the upper sill 19 and the lower sill 20 are aluminum parts, which are formed by cutting profiles with equal cross sections, connecting with bolts 6, or bonding with structural adhesive.

[0079] As shown in Fig. 17, the lower part 20 of the sill is connected to the front pillar 11. Specifically, the upper part 19 and the lower part 20 of the sill are connected to the front pillar 11 by screws 5, bolts 6 or rivets. The included angle between the mounting surface 1803 of the present application and the horizontal plane is 10 to 25 degrees, that is, the included angles between the first upper surface 1901 and the second upper surface 1902 of the upper part 19 of the sill and the horizontal plane are 10 to 25 degrees. The reason for setting this angle range is that a crash energy absorption structure is set inside the front sill of the present application. When the front sill and the front pillar 11 are subjected to side impacts, the side (outer side) where the upper part 19 of the sill fits with the front pillar 11 is the first to be stressed and displaced along the direction from outside to inside. Since the height of the right side of the upper part 19 of the sill is smaller and the height H2 of the middle part is larger, the right side of the upper part 19 of the sill will undergo crash deformation prior to the middle part.

[0080] Based on the above embodiments, in this embodiment, the front floor assembly 2 includes: an inner sill assembly and a front floor assembly. The inner sill assembly includes the front part 21 and the rear part 22 of the inner sill. The rear part 22 of the inner sill is arranged at the end of the front part 21 of the inner sill. The sill reinforcement 23 is arranged on the front part 21 of the inner sill. A groove-like structure is formed between the front part 21 of the inner sill and the front engine compartment 3, and a chamber structure is formed between this groove-like structure and the front pillar 11.

[0081] Specifically, the front part 21 of the inner sill is a groove-like structure. The upper trimming 2101 at one end and the rear trimming 2102 at the other end of the front part 21 of the inner sill are in a "Ji" shape. The front part 21 of the inner sill includes a reference surface 2103 of the inner sill, and a flange surface 2104 is arranged at one end of the reference surface 2103 of the inner sill. As shown in Fig. 7, the front part 21 of the inner sill is in an L-shaped structure as a whole in the side view direction, the overall structure is in a groove-like shape, the upper trimming 2101 and the rear trimming 2102 are in a "Ji" shape, the bottom of the front part 21 of the inner sill is the reference surface 2103 of the inner sill, and a flange surface 2104 is arranged at the opening part.

[0082] The rear part 22 of the inner sill is a groove-like structure, and the groove cross-sectional width and depth of the front part 21 and the rear part 22 of the inner sill are the same. Specifically, the rear part 22 of the inner sill is regular in the side view direction, and the overall structure is in a groove-like shape. The groove cross-sectional width and depth of the front part 21 and the rear part 22 of the inner sill are the same, and the two parts are respectively bonded and welded at the bottom, side and flange surface 2104 of the groove. In another embodiment, the front part 21 and the rear part 22 of the inner sill can be combined into one stamping part to reduce the number of parts and the welding cost. The reason for splitting the side of the sill in this embodiment is that a thicker plate with a higher material yield strength can be selected for the front part 21 of the inner sill to improve the stiffness of the front part of the sill during frontal collision, reduce the deformation amount of the sill towards the rear of the vehicle body when the sill is subjected to impact, and avoid intrusion into the occupant compartment space.

[0083] A sill reinforcement 23 is provided inside the groove-shaped structure of the front part 21 of the inner sill plate. The sill reinforcement 23 is a stamped part structure. A reinforcement reference surface 2301 is provided on the sill reinforcement 23. A rear flange 2302, a front flange 2303, an upper flange 2304, and a lower flange 2305 are respectively provided on the circumference of the reinforcement reference surface 2301. The rear flange 2302, the front flange 2303, the upper flange 2304, and the lower flange 2305 are all attached and fixed to the front part 21 of the inner sill plate and connected by spot welding.

[0084] The sill reinforcement 23 is positioned higher than the rear part 22 of the inner sill panel because the front part 21 of the inner sill panel, the rear part 22 of the inner sill panel, the upper part 19 of the sill panel, and the lower part 20 of the sill panel are located at the bottom of the vehicle body and have a front-to-back through structure. They are very rigid during a frontal collision and are prone to large lateral shear forces in the area of ​​the sill reinforcement 23. The sill reinforcement 23 strengthens the joint between the front pillar 11 and the sill, preventing the joint from bending and deforming during a side collision and from lateral shearing fracture during a frontal collision.

[0085] There is a gap between the rear flange 2302 and the hinge reinforcement plate assembly. Specifically, as shown in Figure 16, in particular, the difference D1 in the X direction between the rear flange 2302 of the sill reinforcement 23 and the front flange 1602 of the lower hinge reinforcement plate 16 is not less than 8mm, that is, the width of the rear flange 2302 of the sill reinforcement 23 in the front-rear direction of the vehicle body is more than 8mm larger than the width of the front flange 1602 of the lower hinge reinforcement plate 16 in the front-rear direction of the vehicle body.

[0086] Furthermore, the front floor assembly is secured to the sill inner panel assembly. The front floor assembly includes a floor body 26, on which are provided an outer reinforcing crossbeam 24, an outer reinforcing longitudinal beam structure 25, a seat front crossbeam 27, an inner reinforcing crossbeam 28, and a central channel 29. The outer reinforcing longitudinal beam structure 25, the central channel 29, the outer reinforcing crossbeam 24, the inner reinforcing crossbeam 28, and the seat front crossbeam 27 form a mutually perpendicular "well" shaped frame structure. The outer reinforcing crossbeam 24 includes a connecting surface 2403, which is pressed against the top of the outer reinforcing longitudinal beam structure 25 and is fixedly attached to the floor body 26. The connecting surface 2403 has a bonding surface 2402 at both ends, which is fixedly attached to the floor body 26. The connecting surface 2403 also has an outer crossbeam flange 2401, which is fixedly attached to the front part 21 of the sill inner panel. The flange structure at the end of the seat front crossbeam 27 is fixedly attached to the rear part 22 of the sill inner panel.

[0087] Specifically, in addition to the front part of the front floor assembly having the front part of the inner sill panel 21, the rear part of the inner sill panel 22 and the sill reinforcement 23 provided on the side, a floor body 26 is provided on the horizontal plane. On the upper surface of the floor body 26, a front seat crossmember 27 extending in a left-right square shape, an outer floor reinforcement crossmember 24, and an inner reinforcement crossmember 28 are provided. An outer reinforcement longitudinal beam structure 25 and a center tunnel 29 extending in the front-rear direction are provided.

[0088] Furthermore, the outer reinforcement longitudinal beam structure 25, the center tunnel 29, the outer floor reinforcement crossmember 24, the inner reinforcement crossmember 28, and the front seat crossmember 27 form a "grid" frame structure perpendicular to each other.

[0089] Furthermore, an upward flanging 2304 is provided on the outer side of the outer floor reinforcement crossmember 24 and is fitted and welded to the reference surface 2103 of the inner sill panel at the front of the sill; three flangings are provided on the outer side of the front seat crossmember 27 and are fitted and welded to the reference surface 2301 of the reinforcement at the rear of the sill.

[0090] Based on the above embodiments, in this embodiment, the front engine compartment 3 includes: a base surface, a front baffle 34, an inner fender panel 31, an upper engine compartment floor connecting plate 32, a lower engine compartment floor connecting plate 33, an outer reinforcement longitudinal beam extension plate 35, a front part of the tunnel 36, and a front longitudinal beam side plate 37. The front baffle 34 is provided at the end of the base surface and is connected to the front floor assembly 2; the inner fender panel 31 is provided on one side of the base surface. The inner fender panel 31 is connected to the front floor assembly 2, and a groove-like structure is formed between the inner fender panel 31 and the front floor assembly 2. A chamber structure is formed between this groove-like structure and the front pillar 11. The sill reinforcement 23 is fitted to the reference surface of the inner fender panel 31; the upper engine compartment floor connecting plate 32 is provided between the base surface and the inner fender panel 31; the lower engine compartment floor connecting plate 33 is provided between the base surface and the inner fender panel 31 and is connected to the bottom end of the upper engine compartment floor connecting plate 32 and the front floor assembly 2. The lower engine compartment floor connecting plate 33 is provided as a groove-like open structure; the outer reinforcement longitudinal beam extension plate 35 is provided between the base surface and the front baffle 34; the front part of the tunnel 36 is provided between the base surface and the front baffle 34 and extends along the vehicle body length direction; the front longitudinal beam side plate 37 is provided on one side of the lower engine compartment floor connecting plate 33 and extends along the vehicle body length direction.

[0091] Specifically, as shown in FIG. 9, the inner fender panel 31 surrounds a groove-like structure. The lower edge 3101 of the inner fender panel 31 is in a "U" shape, and the lower edge 3101 of the inner fender panel 31 is fitted and fixed to the front floor assembly 2.

[0092] In this embodiment, the cabin floor connecting plate is divided into two parts: an upper part 32 and a lower part 33. The reason for dividing it into two parts is to allow for the selection of different material thicknesses and grades on the parts, and to facilitate the completion of the stamping process within a limited number of stamping operations. In another embodiment, the upper part 32 and the lower part 33 of the cabin floor connecting plate can be combined into a single stamping part. The upper part 32 of the cabin floor connecting plate is provided with a cabin floor flange 3201, which is attached and fixed to the lower edge 3101 of the inner fender 31. The lower part 33 of the cabin floor connecting plate is provided with a cabin floor connecting plate flange 3301. The cabin floor connecting plate is also provided with a lower first flange 3303, a lower second flange 3304 and a baffle flange 3401. The cabin floor connecting plate flange 3301 is located below the lower edge 3101 of the inner fender 31 and is attached to the reference surface of the inner fender 31. The above-mentioned attachment surfaces 2402 are all provided with spot welding connection. A through hole 3302 is provided on the cabin floor connecting plate flange 3301.

[0093] The front section 36 of the passage and the outer reinforcing longitudinal beam extension plate 35 are both arranged along the front-rear direction of the vehicle body and are located above the front baffle 34; one end of the front floor assembly 2 is located at the top of the outer reinforcing longitudinal beam extension plate 35; the upper and lower parts of the inner fender plate 31 are both connected and fixed to the hinge reinforcing plate assembly.

[0094] The front engine compartment, sill inner panel assembly, and front floor assembly are connected by welding, structural adhesive bonding, and standard parts to form the front body assembly.

[0095] Referring to Figure 11, one possible assembly sequence for the front nacelle 3, the sill inner panel assembly, and the front floor assembly is as follows:

[0096] Place the front part of the front floor onto the welding fixture on the production line;

[0097] Fit the right sill inner panel assembly to the side of the front floor assembly from right to left.

[0098] Place the front nacelle 3 on top of the front floor assembly from top to bottom;

[0099] Since the inner fender panel 31 and the front sill inner panel 21 on the side of the forward fuselage 3 are both groove-shaped parts, the mounting path of the parts must be accurately planned when mounting the parts vertically in the third step of the forward fuselage 3 to avoid interference during assembly. This application recommends using the second assembly sequence:

[0100] Place the front engine compartment 3 on the welding fixture on the production line;

[0101] Place the front part of the front floor assembly on the welding fixture from top to bottom. At this time, some structures of the front part of the front floor assembly will fall above the front engine compartment 3, thereby forming a welding surface 1605;

[0102] Place the right side sill inner panel assembly along the direction from right to left, and fit it to the sides of the front engine compartment 3 and the front floor.

[0103] After the front engine compartment 3, the sill inner panel assembly and the front floor assembly are assembled together, the lower edge 3101 of the lower part of the inner fender panel 31 is fitted to the upper trimming edge 2101 of the front part of the sill inner panel 21. The lower part 33 of the engine compartment floor connecting plate is fitted to the trough-shaped cross-section of the front part of the sill inner panel 21 on the sill inner panel reference plane 2103. Spot welding is used on the above-mentioned fitted surfaces to realize the welding of the front engine compartment 3 and the sill inner panel assembly.

[0104] The front section of the outer side strengthening longitudinal beam structure 25 falls above the outer side strengthening longitudinal beam extension plate 35. Since there is a front baffle 34 below these two parts, the outer side strengthening longitudinal beam structure 25 and the outer side strengthening longitudinal beam extension plate 35 cannot be connected by spot welding. In the embodiment of the present invention, an arc welding connection process is used.

[0105] Specifically, a bolt 6 connection method can also be used between the outer side strengthening longitudinal beam structure 25 and the outer side strengthening longitudinal beam extension plate 35.

[0106] The front section of the floor body 26 falls behind the front baffle 34, and the front section of the middle channel 29 falls behind the front part of the channel 36. Spot welding is used on the above-mentioned fitted surfaces to realize the welding of the front engine compartment 3 and the front floor.

[0107] Furthermore, an upward outer beam flange 2401 is provided on the outer side of the floor outer side strengthening cross beam 24 and is fitted and welded to the sill inner panel reference plane 2103 of the front part of the sill inner panel 21. Three flanges are provided on the outer side of the front seat cross beam 27 and are fitted and welded to the bottom surface of the rear part of the sill inner panel 22.

[0108] As shown in Fig. 13, the left and right side inner panel assemblies 1 are respectively assembled on the left and right sides of the front vehicle body, and the profile of the front part of the outer side panel 8 is consistent with the height of the front door ring.

[0109] The inner fender panel 31 and the front part of the sill inner panel 21 form a trough-shaped structure including the front pillar 11 and the front sill area. The above two trough-shaped structures are fitted through the flange surface 2104 to form an approximately "mouth" - shaped closed cross-section.

[0110] In the cavity surrounded by this cross-section, the upper hinge reinforcement plate 14, the upper hinge connecting plate 15, the lower hinge reinforcement plate 16, the upper connecting plate of the lower hinge 17, the lower connecting plate of the lower hinge 18, the upper part of the sill 19 and the lower part of the sill 20 are accommodated.

[0111] Referring to Figure 13, in addition to welds and structural adhesive, the front body assembly and the side inner panel assembly 1 are also connected by bolts 6 in the following locations: the upper section of the fender inner panel 31, where two bolts 6 are tightened from the inside of the vehicle to the outside into the two welded nuts 1703 of the upper hinge connecting plate 15; the lower section of the fender inner panel 31, where two bolts 6 are tightened from the inside of the vehicle to the outside into the two welded nuts 1703 of the lower hinge upper connecting plate 17; and the through hole 3302 of the lower part 33 of the engine compartment floor connecting plate, where bolts 6 are tightened from the inside of the vehicle to the welded nuts 1703 of the front part 21 of the sill inner panel.

[0112] Based on the above embodiments, in this embodiment, the vehicle body structure further includes: a collision connecting plate 4, which includes a first extension plate 401, a groove 403 and a second extension plate 402. The groove 403 is disposed between the first extension plate 401 and the second extension plate 402. The first extension plate 401 is connected to the front pillar 11 and the hinge reinforcement plate assembly. The second extension plate 402 is connected to the front engine compartment 3 and is also connected to the front floor assembly 2. There is a gap between the groove 403 and the front floor assembly 2 and between the groove 403 and the side inner panel assembly 1.

[0113] Specifically, after the front body assembly and the side inner panel assembly 1 are assembled, bolts 6 are used to fix one end of the collision connecting plate 4 to the side inner panel assembly 1, and the other end to the sill inner panel assembly. The collision connecting plate 4 only fits with the side inner panel assembly 1 and the sill inner panel assembly at the connection point of bolts 6. The X-direction distance between the groove 403 and the side inner panel assembly 1 and the sill inner panel assembly is not less than 3mm to avoid interference with the collision connecting plate 4 due to part deviations of the side inner panel assembly 1 and the sill inner panel assembly.

[0114] Furthermore, the fixing point between the collision connecting plate 4 and the inner side panel assembly 1 is located on the rear flange 1603 of the lower hinge reinforcement plate 16. The fixing point between the collision connecting plate 4 and the inner sill panel assembly also serves to connect the front longitudinal beam side panel 37. This connection point is located on the front part 21 of the inner sill panel, and at least one fixing point is located in the cavity between the sill reinforcement 23 and the fender inner panel 31.

[0115] Specifically, the present invention proposes that the difference D1 between the rear flange 2302 of the sill reinforcement 23 and the front flange 1602 of the lower hinge reinforcement plate 16 in the X direction is not less than 8mm, that is, the width of the rear flange 2302 of the sill reinforcement 23 in the front-rear direction of the vehicle body is more than 8mm greater than the width of the front flange 1602 of the lower hinge reinforcement plate 16 in the front-rear direction of the vehicle body.

[0116] The purpose of this design is that when the front pillar 11 is subjected to a large impact, the front pillar 11 will move towards the inner fender panel 31. The door sill reinforcement 23 and the inner fender panel 31 can wrap around the hinge reinforcement plate and the front pillar 11, reducing the movement of the lower hinge reinforcement plate 16 and the front pillar 11 into the vehicle, and preventing the lower part of the front pillar 11 from bending significantly into the vehicle or towards the rear.

[0117] Due to the arrangement of the front wheels and their wheel envelope, the positions of the collision connection plate 4 and its mounting surfaces 1803 on the front pillar 11 and the inner fender 31 are restricted. Sufficient X-direction width is provided for the front pillar 11 to improve its strength in frontal and side collisions. However, increasing the overall width of the front pillar 11 would cause the door opening seal to shift backward, resulting in a smaller X-direction opening for the front door, potentially affecting the ease of entry and exit for front passengers. If the difference D1 in the X-direction between the rear flange 2302 of the sill reinforcement 23 and the front flange 1602 of the lower hinge reinforcement plate 16 is too large, it could also lead to a smaller X-direction opening for the front door. Therefore, this invention proposes that the width of the front flange 1602 of the lower hinge reinforcement plate 16 be at least 16mm to form a row of welded connections, and that the length of the rear flange 2302 of the sill reinforcement 23 be extended as much as possible, with a gap of at least 3mm between it and the front pillar 11 and the lower hinge reinforcement plate 16, to maximize the difference D1.

[0118] The upper flange 2304 and lower flange 2305 of the sill reinforcement 23 are attached to the lower edge 3101 of the fender inner panel 31. Specifically, referring to Figure 17, H2 is set as the maximum height of the upper sill 19, and the distance between the turning point of the lower end of the reinforcement reference surface 2301 of the sill reinforcement 23 and the highest point of the upper sill 19 is H1. In this embodiment of the invention, the height difference H1 between the highest point of the top of the upper sill 19 and the turning point of the lower end of the reinforcement reference surface 2301 of the sill reinforcement 23 is 10-20mm. The reason for this height difference setting is that when the upper sill 19 and the mounting surface 1803 of the lower hinge connecting plate 18 deform inward, they can always remain below the sill reinforcement 23, controlling the direction of collision deformation, reducing the amount of deformation caused by the front pillar 11 and the sill inner panel assembly pressing upward on the sill reinforcement 23, the lower part of the engine compartment floor connecting plate 33, and the front baffle 34, and reducing the encroachment on the passenger's foot space.

[0119] Furthermore, the lower part 33 of the cabin floor connecting plate in this embodiment is also provided as a groove-shaped opening structure, with the height of its reference plane being [missing information], and the opening direction facing outwards from the vehicle body. Moreover, the height of the reference plane of the lower part 33 of the cabin floor connecting plate is greater than or equal to the sum of the height of the upper part 19 of the sill and the height difference between the turning point of the lower end of the reference plane 2301 of the sill reinforcement 23 and the highest point of the upper part 19 of the sill. In other words, the height H3 of the reference plane of the lower part 33 of the cabin floor connecting plate ≥ H1 + H2.

[0120] Furthermore, the sill inner plate reference surface 2103 of the sill reinforcement 23 is higher in height than the first mounting nut 1604 on the hinge reinforcement plate assembly, and the height difference between the sill inner plate reference surface 2103 of the sill reinforcement 23 and the first mounting nut 1604 on the hinge reinforcement plate assembly is greater than or equal to a set value, with a height difference H4 ≥ 10mm. The reason for setting this height difference is that when the door hinge, along with the first mounting nut 1604, deforms inwards, it can be blocked by the sill inner plate reference surface 2103 of the inner sill reinforcement 23, thereby limiting further inward deformation of the door hinge.

[0121] In summary, according to the technical solution of this application, the transmission path of force and energy at the lower part of the front pillar 11 during a side impact is as follows:

[0122] When the side impact force on the lower part of the side outer panel 8, the front pillar 11, and the outer side of the upper sill 19 exceeds the yield limit of the parts, deformation will occur from the outside. Due to the cross-sectional shape and α-angle setting of the upper sill 19, the deformation sequence of the upper sill 19 is from the outside to the inside, with the first chamber Q1 collapsing first.

[0123] After the first chamber 1903Q1 collapses and deforms, if the lower part of the front pillar 11 still tends to deform into the vehicle, the second chamber Q2 will continue to collapse, and the collapse of the second chamber 1904Q2 will pull the lower hinge connecting plate 18 to deform into the vehicle. The lower part of the lower hinge connecting plate 18 is fixedly connected to the lower hinge reinforcing plate 16 and the upper part of the lower hinge upper connecting plate 17, which enhances the second chamber 1904Q2's ability to resist collapse.

[0124] During the collapse of the second chamber 1904Q2, the lower part of the lower hinge connecting plate 18 will undergo an upward flipping deformation. By setting the height difference H1, the mounting surface 1803 of the lower part of the lower hinge connecting plate 18 is further flipped upward by the threshold reinforcement 23.

[0125] After the second chamber 1904Q2 collapses and deforms, if the lower part of the front pillar 11 still tends to deform into the vehicle, the upper part of the sill 19 and the front flange 2303 of the sill reinforcement 23 fall into the groove opening of the lower part of the engine compartment floor connecting plate 33, and the lower part of the engine compartment floor connecting plate 33 further limits the further displacement of the front pillar 11 into the vehicle.

[0126] The inner side of the lower part 33 of the cabin floor connecting plate has a "well"-shaped frame structure formed by the outer reinforcing longitudinal beam structure 25, the central channel 29, the outer reinforcing crossbeam 24 and the inner reinforcing crossbeam 28 of the floor, and the front crossbeam 27 of the seat, which transmits the force to the other side of the vehicle body and maintains the integrity of the cockpit.

[0127] Therefore, in this application, the upper hinge reinforcement plate 14 and the lower hinge reinforcement plate 16 located in the front pillar 11, in addition to having multiple mating surfaces 2402 welded to the front door ring in the hinge mounting area, are also connected by bolts 6 on the inner fender panel 31 on the inner side of the vehicle body. By setting a cavity structure that runs through the left and right sides between the inner and outer panels of the front pillar 11, the rigidity of the upper hinge mounting area is improved. When the door and hinge are subjected to a large Y-axis impact, the force can be transferred to the engine compartment and the other side of the vehicle body through the hinge reinforcement plate, reducing the large deformation or failure of the front door mounting point caused by the cavity compression of the front pillar 11.

[0128] The lower hinge reinforcement plate 16 located in the front pillar 11, in addition to being connected to the front part of the front door ring and the front pillar 11 at the top, also has a connection structure with the inner door sill panel assembly at the bottom. The Y-direction impact force at the mounting point of the lower hinge reinforcement plate 16 can be transmitted to the door sill and the front floor beam through this connection structure.

[0129] A sill reinforcement 23 is provided in the groove structure of the front part 21 of the sill inner panel. The sill reinforcement 23 is positioned higher than the rear part 22 of the sill inner panel, which improves the structural rigidity of the junction between the front post 11 and the sill inner panel assembly, reduces the bending deformation of the joint during a side collision, and avoids transverse shear fracture during a frontal collision.

[0130] The upper surface of the sill 19 in the front pillar 11 is set at an inclined angle, and a first chamber 1903 and a second chamber 1904 are set to facilitate the side collision energy absorption path planning; the first chamber 1903 collapses first to absorb energy, and when the second chamber 1904 collapses, it pulls the lower hinge reinforcement plate 16 to move into the vehicle, which improves the ability of the second chamber 1904 to cope with side collision impact.

[0131] The direction of the collapse of the second chamber 1904 is restricted by the lower hinge connecting plate 18 and the sill reinforcement 23, which controls the intrusion of the front pillar 11, the lower hinge reinforcement plate 16 and the inner sill plate assembly into the passenger's foot space when they are folded upwards.

[0132] The cabin floor connecting plate is designed with a groove structure to further limit the intrusion of the front pillar 11, upper door sill 19 and fender inner panel 31 into the vehicle.

[0133] A second aspect of this application provides a vehicle, including a vehicle body and a body structure of any of the above embodiments, wherein the body structure is disposed on the vehicle body.

[0134] In the vehicle of this application, the vehicle body is provided with the body structure of this application embodiment. In the body structure, a cavity structure is provided between the front body assembly and the front pillar 11. The hinge reinforcement plate assembly located in the cavity structure is not only connected to the front pillar 11, but also fixed to the front floor assembly 2 and the front engine compartment 3, thereby improving the rigidity of the side panel assembly 1 and the front body assembly. When the door and the hinge reinforcement plate are subjected to a large Y-direction impact, the force can be transmitted to the front body assembly and the side panel assembly 1 through the hinge reinforcement plate, reducing the large deformation or failure of the front door mounting point caused by the cavity compression of the front pillar 11. A sill reinforcement member 23 is provided in the cavity structure. The sill reinforcement member 23 is located at the junction of the front floor assembly 2 and the front engine compartment 3, thereby improving the structural rigidity of the junction of the front pillar 11, the front floor assembly 2 and the front engine compartment 3, reducing the bending deformation of the joint during the side collision, and avoiding lateral shear fracture during the frontal collision.

[0135] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0136] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0137] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A vehicle body structure, characterized in that, It includes: The side inner panel assembly (1) includes a front pillar (11) and a hinge reinforcement plate assembly, which is fixed to the front pillar (11). The front body assembly is connected to the side inner panel assembly (1). The front body assembly includes a front floor assembly (2) and a front engine compartment (3) located at the top of the front floor assembly (2). A sill reinforcement (23) is provided on the front floor assembly (2). The sill reinforcement (23) is located at the junction of the front floor assembly (2) and the front engine compartment (3). The front body assembly and the front pillar (11) form a cavity structure, the hinge reinforcement plate assembly and the door sill reinforcement (23) are both located inside the cavity structure, and the hinge reinforcement plate assembly is also fixed to the front floor assembly (2) and the front engine compartment (3).

2. The vehicle body structure as described in claim 1, characterized in that, The hinge reinforcement plate assembly includes: The upper reinforcing plate assembly includes an upper hinge reinforcing plate (14) and an upper hinge connecting plate (15). The upper hinge reinforcing plate (14) is connected to the upper hinge connecting plate (15), and the upper hinge reinforcing plate (14) and the upper hinge connecting plate (15) are fixed to the front column (11). The lower reinforcing plate assembly includes a lower hinge reinforcing plate (16), a lower hinge upper connecting plate (17), and a lower hinge lower connecting plate (18). The lower hinge reinforcing plate (16) is fixed between the lower hinge upper connecting plate (17) and the lower hinge lower connecting plate (18).

3. The vehicle body structure as described in claim 2, characterized in that: The lower hinge reinforcing plate (16) has a groove structure. The lower hinge reinforcing plate (16) includes a reinforcing plate reference surface (1601). A front flange (1602) and a rear flange (1603) are fixed on both sides of the reinforcing plate reference surface (1601). A welding surface (1605) is provided at the end of the reinforcing plate reference surface (1601), and a connecting plane (1606) is provided at the end of the rear flange (1603). The upper connecting plate (17) of the lower hinge is provided with a first flange (1701) extending to the bottom of the vehicle body and a second flange (1702) extending to the top of the vehicle body. The first flange (1701) of the upper connecting plate is fitted and fixed to the reference surface (1601), the front flange (1602) and the rear flange (1603) of the reinforcing plate. The upper connecting plate (17) of the lower hinge has an angle with the horizontal plane, and the angle is an acute angle. The lower hinge connecting plate (18) includes a connecting plate reference surface (1801), which is connected to the lower hinge reinforcing plate (16). A flange is provided on one side of the connecting plate reference surface (1801), and a mounting surface (1803) is provided at the bottom end of the connecting plate reference surface (1801). The mounting surface (1803) has an angle with the horizontal plane, which is an acute angle. The mounting surface (1803) has an angle with the reinforcing plate reference surface (1601), which is an acute angle.

4. The vehicle body structure as described in any one of claims 1 to 3, characterized in that, The front floor assembly (2) includes: The sill inner panel assembly, the sill inner panel assembly includes the front part (21) of the sill inner panel and the rear part (22) of the sill inner panel. The rear part (22) of the sill inner panel is arranged at the end of the front part (21) of the sill inner panel. The sill reinforcement (23) is arranged on the front part (21) of the sill inner panel. A groove-like structure is formed between the front part (21) of the sill inner panel and the front engine compartment (3), and a chamber structure is formed between this groove-like structure and the front pillar (11); The front floor assembly, the front floor assembly is fixed to the sill inner panel assembly.

5. The vehicle body structure according to claim 4, wherein: The front part (21) of the sill inner panel is of a groove-like structure. The upper trimming (2101) at one end and the rear trimming (2102) at the other end of the front part (21) of the sill inner panel are in a "Ji" shape. The front part (21) of the sill inner panel includes the sill inner panel reference surface (2103), and a flange surface (2104) is arranged at one end of the sill inner panel reference surface (2103); The rear part (22) of the sill inner panel is of a groove-like structure, and the widths and depths of the groove-like cross-sections of the front part (21) of the sill inner panel and the rear part (22) of the sill inner panel are the same; The sill reinforcement (23) is provided with a reinforcement reference surface (2301). Rear flanges (2302), front flanges (2303), upper flanges (2304) and lower flanges (2305) are respectively arranged on the peripheral surface of the reinforcement reference surface (2301). The rear flanges (2302), front flanges (2303), upper flanges (2304) and lower flanges (2305) are all fixedly adhered to the front part (21) of the sill inner panel. The setting position of the sill reinforcement (23) is higher than that of the rear part (22) of the sill inner panel, and there is a gap between the rear flange (2302) and the hinge reinforcement plate assembly.

6. The vehicle body structure according to claim 4 or 5, wherein: The front floor assembly includes a floor body (26). A floor outer reinforcement cross beam (24), an outer reinforcement longitudinal beam structure (25), a seat front cross beam (27), an inner reinforcement cross beam (28) and a middle channel (29) are arranged on the floor body (26). The outer reinforcement longitudinal beam structure (25), the middle channel (29), the floor outer reinforcement cross beam (24), the inner reinforcement cross beam (28) and the seat front cross beam (27) form a mutually perpendicular "well" - shaped frame structure; The floor outer reinforcement cross beam (24) includes a connection surface (2403). The connection surface (2403) is pressed on the top end of the outer reinforcement longitudinal beam structure (25) and is fixedly adhered to the floor body (26). Fitting surfaces (2402) are arranged at both ends of the connection surface (2403), and the fitting surfaces (2402) are fixedly adhered to the floor body (26). An outer cross beam flange (2401) is also arranged on the connection surface (2403), and the outer cross beam flange (2401) is fixedly adhered to the front part (21) of the sill inner panel; The flanging structure at the end of the seat front cross beam (27) is fixedly adhered to the rear part (22) of the sill inner panel.

7. The vehicle body structure as described in any one of claims 1 to 6, characterized in that, The front engine compartment (3) includes: A base surface; The front baffle (34), the front baffle (34) is arranged at the end of the base surface and is connected to the front floor assembly (2); The inner fender panel (31), the inner fender panel (31) is arranged on one side of the base surface, the inner fender panel (31) is connected to the front floor assembly (2), a groove-like structure is formed between the inner fender panel (31) and the front floor assembly (2), and a chamber structure is formed between this groove-like structure and the front pillar (11), and the sill reinforcement (23) is fitted to the reference surface of the inner fender panel (31); The upper part of the engine compartment floor connecting plate (32), the upper part of the engine compartment floor connecting plate (32) is arranged between the base surface and the inner fender panel (31); The lower part of the engine compartment floor connecting plate (33), the lower part of the engine compartment floor connecting plate (33) is arranged between the base surface and the inner fender panel (31), and is connected to the bottom end of the upper part of the engine compartment floor connecting plate (32) and the front floor assembly (2), and the lower part of the engine compartment floor connecting plate (33) is arranged as a groove-like opening structure; The outer side strengthening longitudinal beam extension plate (35), the outer side strengthening longitudinal beam extension plate (35) is arranged between the base surface and the front baffle (34); The front part of the channel (36), the front part of the channel (36) is arranged between the base surface and the front baffle (34) and extends along the vehicle body length direction; The front longitudinal beam side plate (37), the front longitudinal beam side plate (37) is arranged on one side of the lower part of the engine compartment floor connecting plate (33) and extends along the vehicle body length direction.

8. The vehicle body structure according to claim 7, wherein: The inner fender panel (31) has a groove-like structure, the lower edge (3101) of the inner fender panel (31) is in a "Ji" shape, and the lower edge (3101) of the inner fender panel (31) is fixedly fitted to the front floor assembly (2); One end of the upper part of the engine compartment floor connecting plate (32) is provided with an engine compartment floor flanging surface (3201), and the engine compartment floor flanging surface (3201) is fixedly fitted to the lower edge (3101) of the inner fender panel (31); One end of the lower part of the engine compartment floor connecting plate (33) is provided with an engine compartment floor connecting plate flanging surface (3301), and the engine compartment floor connecting plate flanging surface (3301) is located below the lower edge (3101) of the inner fender panel (31); One end of the front floor assembly (2) is arranged at the top end of the outer side strengthening longitudinal beam extension plate (35); Both the upper and lower parts of the inner fender panel (31) are fixedly connected to the hinge reinforcement plate assembly.

9. The vehicle body structure as described in claim 7 or 8, characterized in that, The inner side panel assembly (1) further includes: The outer sill panel (12), the outer sill panel (12) is connected to the front pillar (11) and the hinge reinforcement plate assembly; The windshield pillar outer panel (13), the windshield pillar outer panel (13) is arranged at the top end of the front pillar (11); The upper part of the threshold (19) is connected to the front pillar (11). The first upper surface (1901) and the second upper surface (1902) of the upper part of the threshold (19) have an angle with the horizontal plane. The height difference between the top of the upper part of the threshold (19) and the reference surface (2301) of the reinforcing member (23) is 10-20mm. The height difference of the reference surface of the lower part (33) of the cabin floor connecting plate is greater than or equal to the sum of the height of the upper part of the threshold (19) and the height difference between the turning point of the lower end of the reference surface (2103) of the reinforcing member (23) and the highest point of the upper part of the threshold (19). The upper part of the threshold (19) has a first chamber (1903) and a second chamber (1904). The lower part of the threshold (20) is connected to the front post (11); There is a gap between the front column (11) and the hinge reinforcement plate assembly; The sill inner plate reference surface (2103) of the sill reinforcement (23) is higher than the height of the first mounting nut (1604) on the hinge reinforcement plate assembly in the height direction, and the height difference between the sill inner plate reference surface (2103) of the sill reinforcement (23) and the first mounting nut (1604) on the hinge reinforcement plate assembly is greater than or equal to a set value.

10. The vehicle body structure as described in any one of claims 1 to 9, characterized in that, The vehicle body structure also includes: The collision connection plate (4) includes a first extension plate (401), a groove (403) and a second extension plate (402). The groove (403) is disposed between the first extension plate (401) and the second extension plate (402). The first extension plate (401) is connected to the front pillar (11) and the hinge reinforcement plate assembly. The second extension plate (402) is connected to the front engine compartment (3) and is also connected to the front floor assembly (2). There is a gap between the groove (403) and the front floor assembly (2) and between the groove (403) and the side inner panel assembly (1).

11. The vehicle body structure as described in claim 2, characterized in that, The lower hinge reinforcing plate (16), the lower hinge upper connecting plate (17), and the lower hinge lower connecting plate (18) are welded together to form the lower reinforcing plate assembly.

12. The vehicle body structure as described in claim 3, characterized in that, The angle between the upper connecting plate (17) of the lower hinge and the horizontal plane is in the range of 3 to 5 degrees.

13. The vehicle body structure as described in claim 3, characterized in that, The angle between the mounting surface (1803) and the horizontal plane is in the range of 10 degrees to 25 degrees, and / or the angle between the mounting surface (1803) and the reference surface (1601) of the reinforcing plate is in the range of 65 degrees to 80 degrees.

14. The vehicle body structure as described in claim 10, characterized in that, The fixing point of the collision connecting plate (4) and the side inner panel assembly (1) is set on the rear flange (1603) of the lower hinge reinforcing plate (16).

15. A vehicle, characterized in that, include: Vehicle body; The vehicle body structure as described in any one of claims 1 to 14, wherein the vehicle body structure is disposed on the vehicle body.

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