Front windshield lower cross beam structure assembly, vehicle body and vehicle
By incorporating square holes and reinforcing beams into the lower crossbeam structure assembly of the windshield, the problems of reduced structural stiffness and limited assembly space caused by increased cantilever length were solved, thereby improving the NVH performance and assembly efficiency of the entire vehicle.
Patent Information
- Application Number
- CN202511209392.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2025-10-17
AI Technical Summary
In existing technologies, as the C-point of the car moves forward, the cantilever length of the lower crossbeam structure of the windshield increases, resulting in reduced structural stiffness and decreased NVH performance. At the same time, the assembly space for the front shock absorber is limited, and the assembly process becomes more complicated.
A front windshield lower crossbeam structure assembly is designed. By setting square holes on the rear crossbeam body, the space above the front shock absorber is increased, and the structural stiffness is improved by front and rear lateral and longitudinal reinforcing beams, thus optimizing the shock absorber assembly path.
It improves the structural stiffness and modal frequency of the vehicle, enhances NVH performance, simplifies the assembly process of the front shock absorber, and improves assembly efficiency and ergonomics.
Smart Images
Figure CN120792968A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of automobile body-in-white, and in particular to a front windshield lower cross beam structure assembly, a vehicle body and a vehicle. BACKGROUND
[0002] With the rapid development of the automobile industry, consumers' requirements for vehicle styling, aerodynamic performance and driving comfort are increasingly improved. The C point of the automobile, which is the intersection point of the highest point at the rear end of the front engine hood and the projection surface of the outer surface of the front windshield, has become a key reference point for vehicle design layout and styling. The position of the C point not only affects the streamline effect and the drag coefficient of the vehicle appearance, but also directly relates to the driver's front view range. Generally speaking, moving the C point forward appropriately can optimize the aerodynamic characteristics of the vehicle to a certain extent, reduce the wind resistance, thereby improving the fuel economy and the high-speed driving stability.
[0003] However, in the related art, the structural and process problems brought by the forward movement of the C point are increasingly prominent. First, as the C point is continuously arranged forward, the front windshield lower cross beam of the vehicle body needs to be correspondingly extended along the X direction of the vehicle to the engine compartment area, resulting in a significant increase in the cantilever length of the cross beam in the X direction. The increase in the cantilever length will directly weaken the structural stiffness of the front windshield lower cross beam, thereby reducing the overall modal frequency of the vehicle body, and making the vehicle NVH (Noise, Vibration and Harshness) performance decline, which is manifested as an increase in the in-vehicle noise and an aggravation of the vibration transmission during driving, affecting the driving comfort.
[0004] Secondly, the elongation of the front windshield lower cross beam in the X direction partially blocks the front shock absorber mounting point, causing the assembly space of the front shock absorber and the corresponding suspension components to be limited, and the assembly path to be blocked, thereby leading to the complication of the assembly process, the reduction of the assembly efficiency, and possibly increasing the rework rate and the manufacturing cost. SUMMARY
[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a front windshield lower cross beam structure assembly, a vehicle body and a vehicle, which effectively improve the structural stiffness and the modal, improve the vehicle NVH performance while ensuring the appearance effect and low wind resistance, and facilitate the assembly of the front shock absorber by providing a square hole on the rear cross beam body to increase the space above the front shock absorber.
[0006] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme: In a first aspect, a front windshield lower cross beam structure assembly comprises: a front cross beam assembly, the front end face of which is used to support the front windshield, and a horizontal flange is arranged at the rear end position of the front cross beam assembly; The rear cross beam assembly is arranged at the rear end of the front cross beam assembly, and comprises a rear cross beam body, which comprises a first horizontal part, a first vertical part and a second horizontal part arranged in sequence from front to rear, and the front end of the first horizontal part is fixedly connected with the horizontal flange; The front windshield lower cross beam lower longitudinal beam is welded to the bottom of the front cross beam assembly and the rear cross beam assembly.
[0007] As a further implementation manner, the front cross beam assembly is composed of a connected front windshield lower cross beam body and a water channel rear body; the front windshield lower cross beam body is arranged in three sections from front to rear, and comprises a front end face, a middle inclined surface and a horizontal flange connected in sequence; and the water channel rear body is arranged in two sections, and comprises a front section arranged in an inclined manner and a rear section arranged in a horizontal manner.
[0008] As a further implementation manner, the rear end of the rear section of the water channel rear body is welded below the horizontal flange of the front windshield lower cross beam body; and the top end of the front section is welded to the front side of the middle inclined surface of the front windshield lower cross beam body near the front end face.
[0009] As a further implementation manner, the front windshield lower cross beam support bracket is in a flared U shape, one end of which is welded to the bottom surface of the front end face of the front windshield lower cross beam body, and the other end is welded to the front side of the front section of the water channel rear body.
[0010] As a further implementation manner, the rear cross beam assembly comprises a rear cross beam body, a rear cross beam vertical plate and a rear cross beam lower plate; the rear cross beam body comprises a first horizontal part, a first vertical part and a second horizontal part connected in sequence from front to rear, forming a Z-shaped structure; the upper end of the rear cross beam vertical plate is connected below the rear end of the first horizontal part, the rear cross beam lower plate is located below the rear cross beam body, the second horizontal part is fixedly connected with the upper end of the rear cross beam lower plate, and the front end of the rear cross beam lower plate is welded to the lower end of the rear cross beam vertical plate.
[0011] As a further implementation manner, the rear cross beam body, the rear cross beam vertical plate and the rear cross beam lower plate form a cavity with a quadrilateral cross section, and a plurality of reinforcing plate structures are welded in the cavity.
[0012] As a further implementation manner, the front windshield lower cross beam lower longitudinal beam is in a U-shaped structure, the height of the rear end section of which gradually increases, and the rear end of the front windshield lower cross beam lower longitudinal beam is welded to the front side of the rear cross beam vertical plate.
[0013] As a further implementation manner, a front windshield lower cross beam support plate is arranged at the bottom of each front windshield lower cross beam lower longitudinal beam, and the cross section of the front windshield lower cross beam support plate is L-shaped, including a horizontal upper plate structure and a vertical lower plate structure, the upper plate structure is connected to the bottom surface of the front windshield lower cross beam lower longitudinal beam through bolts, and the lower plate structure is connected to the front reduction cross beam arranged along the Y direction through bolts.
[0014] In a second aspect, a vehicle body is provided with the front windshield lower cross beam structure assembly as described above, and the two ends of the front windshield lower cross beam structure assembly along the Y direction are respectively welded to the left front A-pillar vertical plate and the right front A-pillar vertical plate, and the rear end is welded to the top of the front wall.
[0015] In a third aspect, a vehicle is provided with the vehicle body as described above.
[0016] The beneficial effects of the present application are as follows: 1. The front windshield lower cross beam structure assembly can make full use of the X direction space, and effectively improve the structural stiffness and modal by arranging two transverse closed cross section stiffening beams (front beam assembly and rear beam assembly) at the front and rear and two longitudinal closed cross section stiffening beams (front windshield lower cross beam lower longitudinal beam) at the middle; the vehicle appearance effect and low wind resistance are ensured, and the vehicle NVH performance is improved; the square hole arranged on the rear beam body increases the space above the front shock absorber, realizes the assembly of the front shock absorber, and the front shock absorber mounting point can be easily observed from above through the square opening, which greatly reduces the assembly difficulty and improves the assembly process efficiency and man-machine engineering friendliness.
[0017] 2. The simple channel structure is arranged between the automobile front windshield lower cross beam and the front reduction cross beam, the front reduction excitation transmission path is optimized, the local modal of the front reduction is effectively suppressed, and the noise transfer function peak is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application.
[0019] Fig. 1(a) is a top view of the front windshield lower cross beam structure assembly in the embodiment of the present application; Fig. 1(b) is a schematic view of the A-A section in Fig. 1; Figure 2 Fig. 1(c) is a bottom view of the front windshield lower cross beam structure assembly provided in the embodiment of the present application; Figure 3 Fig. 1(d) is a side view of the front windshield lower cross beam structure assembly provided in the embodiment of the present application; Fig. 4(a) is a schematic view of the front beam assembly structure provided in the embodiment of the present application; Fig. 4(b) is a B-B sectional view of Fig. 4(a); Figure 5 Fig. 1 is an exploded structural schematic view of the front cross beam assembly according to an embodiment of the present application; Fig. 6(a) is a structural schematic view of the lower longitudinal beam of the front windshield lower cross beam according to an embodiment of the present application; Fig. 6(b) is a C-C sectional view of Fig. 6(a); Fig. 7(a) is a structural schematic view of the front windshield lower cross beam support plate according to an embodiment of the present application; Fig. 7(b) is a D-D sectional view of Fig. 7(a); Fig. 8(a) is a structural schematic view of the rear cross beam assembly according to an embodiment of the present application; Fig. 8(b) is an E-E sectional view of Fig. 8(a); Figure 9 Fig. 1 is an exploded structural schematic view of the front cross beam assembly according to an embodiment of the present application; Figure 10 Fig. 1 is an exploded structural schematic view of the front cross beam assembly according to an embodiment of the present application;
[0020] Fig. 1 is an exploded structural schematic view of the front cross beam assembly according to an embodiment of the present application.
[0021] Fig. 1 is an exploded structural schematic view of the front cross beam assembly according to an embodiment of the present application. DETAILED DESCRIPTION
[0022] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0023] Terminology: Front windshield lower cross beam structure: located below the front windshield of the vehicle, serving to support the front windshield, instrument panel and other components, and being a part of the vehicle body structure, with both ends connected to the bottom of the left and right A-pillars and the lower part connected to the front apron, playing an important role in the overall stiffness and safety of the vehicle.
[0024] As introduced in the background, when the existing front windshield lower cross beam structure is elongated in the X direction, there are problems of NVH performance degradation and front shock absorber assembly difficulty, which leads to the inability of the automobile C point to be extremely close to the front. In order to solve the above technical problems, the embodiment provides a front windshield lower cross beam structure assembly. By optimizing the structure design, the automobile C point is guaranteed to be extremely close to the front, the vehicle body NVH performance is improved, and the front shock absorber assembly difficulty problem is solved.
[0025] Embodiment one In a typical embodiment of the present application, referring to FIG. 1(a), Figure 10 a front windshield lower cross beam structure assembly includes a front windshield lower cross beam structure assembly 1, the front windshield lower cross beam structure assembly 1 includes a front cross beam assembly 11, a front windshield lower cross beam lower longitudinal beam 12, a front windshield lower cross beam support plate 13, and a rear cross beam assembly 14.
[0026] The front cross beam assembly 11 is arranged at the front end of the rear cross beam assembly 14. The front windshield lower cross beam lower longitudinal beam 12 is welded to the bottom of the front cross beam assembly 11 and the rear cross beam assembly 14 along the X direction, and is integrated with the front cross beam assembly 11 and the rear cross beam assembly 14. The front windshield lower cross beam support plate 13 is fixedly connected to the bottom of the front windshield lower cross beam lower longitudinal beam 12.
[0027] As shown in Figure 2 and Figure 3 , the front cross beam assembly 11 is welded to the front end of the rear cross beam assembly 14 along the length direction. The rear end of the front cross beam assembly 11 overlaps with the front end of the rear cross beam assembly 14 and is located at the upper part of the rear cross beam assembly 14. The front end of the rear cross beam assembly 14 is horizontal. The front cross beam assembly 11 forms an angle with the rear cross beam assembly 14, that is, the front cross beam assembly 11 is arranged inclined to the rear cross beam assembly 14.
[0028] As shown in Figure 3 , the upper part of the front windshield lower cross beam lower longitudinal beam 12 of the embodiment is welded to the bottom of the front cross beam assembly 11 and the rear cross beam assembly 14, and the rear end is welded to the front vertical surface of the rear cross beam assembly 14, that is, the rear end of the front windshield lower cross beam lower longitudinal beam 12 is welded to the front side surface of the rear cross beam vertical plate 32.
[0029] As shown in FIG. 6, the rear section height of the front windshield lower cross beam lower longitudinal beam 12 gradually increases, thereby increasing the welding area of the rear end joint and the front vertical surface of the rear cross beam vertical plate 32, and improving the connection strength.
[0030] As shown in Fig. 7, the front windshield lower cross beam support plate 13 is in L-shaped section, including horizontal upper plate structure and vertical lower plate structure, the upper plate structure is connected to the bottom surface of the front windshield lower cross beam lower longitudinal beam 12 by one bolt, and the lower plate structure is connected with the front cross beam 2 arranged along the Y direction by two bolts. The simple channel structure is formed between the automobile front windshield lower cross beam 1 and the front cross beam 2.
[0031] The front end of the rear cross beam assembly 14 is welded to the lower part of the rear end of the front cross beam assembly 11, and the rear flange is welded to one end of the front wall 7 in the height direction.
[0032] Specifically, the structure of the front cross beam assembly 11 of the embodiment is shown in Fig. 4 (a)- Figure 5 The front cross beam assembly 11 includes a front cross beam main body and two left and right symmetrical front windshield lower cross beam support brackets 23, wherein the front cross beam main body is composed of a front windshield lower cross beam body 21 and a water channel rear body 22 connected.
[0033] As shown in Fig. 4 (b)- Figure 5 The front windshield lower cross beam body 21 is designed in three sections from front to back, including front end face, middle inclined surface and horizontal flange connected in turn.
[0034] The water channel rear body 22 is designed in two sections, and the whole is in L-shaped, including front section and rear section, the front section is arranged obliquely, and the rear section is arranged horizontally, and the inclination angle of the front section is greater than that of the middle inclined surface of the front windshield lower cross beam body 21.
[0035] The rear end of the rear section of the water channel rear body 22 is welded on the horizontal flange of the front windshield lower cross beam body 21, and specifically welded below the front end position of the horizontal flange.
[0036] The top end of the front section of the water channel rear body 22 is welded on the middle inclined surface of the front windshield lower cross beam body 21, and specifically welded on the front side of the middle inclined surface close to the front end face.
[0037] It can be understood that the middle inclined surface body is arranged in two sections, and the middle position is bent, and the included angle of the two section structures is obtuse. After the water channel rear body 22 is welded with the front windshield lower cross beam body 21, an irregular quadrilateral cavity is formed therebetween, as shown in Fig. 4 (b).
[0038] The front end face of the front windshield lower cross beam body 21 is used to support the front windshield, which is arranged obliquely relative to the horizontal plane, and has a continuous plate-shaped protrusion in the width direction thereon, which is equivalent to a reinforcing rib structure, thereby improving the local rigidity.
[0039] As shown in Fig. 1 (b) and Figure 5 As shown, the front windshield lower cross beam support bracket 23 is in the shape of a flared U, one end of which is welded to the front end face of the front windshield lower cross beam body 21, and the other end is welded to the front side of the rear body 22 of the water channel, i.e., welded to the front side of the front section of the rear body 22 of the water channel, which can effectively improve the rigidity of the glass support surface on the front windshield lower cross beam body 21.
[0040] As shown in FIGS. 6(a) and 6(b), the front windshield lower cross beam lower longitudinal beam 12 is in the shape of a U, and is made of a metal sheet punched and formed, and the thickness can be selected according to different specifications based on the CAE simulation calculation results. A plate-shaped groove is designed on the main surface in the length direction to strengthen the structure, and is arranged at about 1 / 3 and 2 / 3 of the width direction (Y direction) of the front windshield lower cross beam structure assembly 1, and the number is two, which are symmetrically arranged on the left and right sides.
[0041] As shown in FIGS. 7(a) and 7(b), the front windshield lower cross beam support plate 13 is in the shape of an L, and is made of a metal sheet punched and formed, and the thickness can be selected according to different specifications based on the CAE simulation calculation results. A plate-shaped protrusion is arranged on the vertical surface (lower plate-shaped structure) in the vertical direction to strengthen the structure, and is arranged directly below the front windshield lower cross beam lower longitudinal beam 12, which is used in cooperation with the front windshield lower cross beam lower longitudinal beam 12, and the number is two, which are symmetrically arranged on the left and right sides.
[0042] The structure of the rear cross beam assembly 14 is shown in FIGS. 8(a)- Figure 9 As shown, the rear cross beam assembly 14 includes a rear cross beam body 31, a rear cross beam vertical plate 32, a rear cross beam lower plate 33, a rear cross beam left side reinforcing plate 34, a rear cross beam middle reinforcing plate 35, and a rear cross beam right side reinforcing plate 36.
[0043] As Figure 9 shown, the rear cross beam body 31 is in a three-section structure, including a first horizontal section, a first vertical section, and a second horizontal section connected in sequence from front to rear, forming a Z-shaped structure.
[0044] The first horizontal section and the first vertical section have plate-shaped protrusions in the length direction to improve the structural strength. The lower end of the rear end of the first horizontal section is connected to the upper end of the rear cross beam vertical plate 32, and the front end of the first horizontal section is fixedly connected to the horizontal flange of the front cross beam assembly.
[0045] The rear end of the front windshield lower cross beam lower longitudinal beam 12 is welded to the front side of the rear cross beam vertical plate 32. The rear cross beam lower plate 33 is located below the rear cross beam body 31, and is fixedly connected to the upper end of the rear cross beam vertical plate 32. The rear end of the rear cross beam lower plate 33 is welded to the front end of the rear cross beam vertical plate 32.
[0046] As shown in FIG. 8, a square hole 311 structure is formed on the first horizontal part of the rear cross beam body 31 to facilitate the assembly of the front shock absorber through the square hole, and a plate-shaped protrusion is arranged around the square hole for reinforcement. A sealing plug is used to press against the plane of the plate-shaped protrusion to achieve sealing of the square hole.
[0047] As shown in FIG. 8, a square hole 311 structure is formed on the first horizontal part of the rear cross beam body 31 to facilitate the assembly of the front shock absorber through the square hole, and a plate-shaped protrusion is arranged around the square hole for reinforcement. A sealing plug is used to press against the plane of the plate-shaped protrusion to achieve sealing of the square hole. Figure 9 As shown in FIG. 8, a square hole 311 structure is formed on the first horizontal part of the rear cross beam body 31 to facilitate the assembly of the front shock absorber through the square hole, and a plate-shaped protrusion is arranged around the square hole for reinforcement. A sealing plug is used to press against the plane of the plate-shaped protrusion to achieve sealing of the square hole.
[0048] As shown in FIG. 8, a square hole 311 structure is formed on the first horizontal part of the rear cross beam body 31 to facilitate the assembly of the front shock absorber through the square hole, and a plate-shaped protrusion is arranged around the square hole for reinforcement. A sealing plug is used to press against the plane of the plate-shaped protrusion to achieve sealing of the square hole.
[0049] Specifically, the positions of the left side reinforcement plate 34, the middle reinforcement plate 35, and the right side reinforcement plate 36 of the rear cross beam are respectively set at about 1 / 4, 1 / 2, and 3 / 4 of the width direction of the front windshield lower cross beam structure assembly, wherein the left side reinforcement plate 34 and the right side reinforcement plate 36 are symmetrically arranged, the middle part of the reinforcement plate has a plate-shaped recess and a weight-reducing hole, the vertical part is connected with a flange, the upper flange is welded with the rear cross beam body 31, the lower flange is welded with the rear cross beam lower plate 33, and the upper and rear flanges are welded with the rear cross beam body 31.
[0050] When the automobile C point of the embodiment is arranged in front, the X-direction space is fully utilized, two transverse closed cross-section reinforcement beams (front cross beam assembly 11 and rear cross beam assembly 14) are arranged in front and back, two longitudinal closed cross-section reinforcement beams (front windshield lower cross beam lower longitudinal beam 12) are arranged in the middle, the structural stiffness and modal are effectively improved; a simple passage structure is arranged between the front windshield lower cross beam 1 and the front shock absorber cross beam 2, the front shock absorber excitation transmission path is optimized, the local modal of the front shock absorber is effectively suppressed, and the noise transmission function peak value is reduced. While ensuring the appearance effect and low wind resistance of the vehicle, the NVH performance of the whole vehicle is improved.
[0051] By arranging a square hole on the rear cross beam body 31, the space above the front shock absorber is increased, the assembly of the front shock absorber is realized, and the front shock absorber mounting point can be easily observed from above through the square hole, which greatly reduces the assembly difficulty, improves the assembly process efficiency, and is friendly to human engineering.
[0052] Embodiment two Based on the front windshield lower cross beam structure assembly, the embodiment of the present application further provides a vehicle body, which is provided with the front windshield lower cross beam structure assembly. Figure 10 As shown in the figure, the front windshield lower cross beam structure assembly 1 is welded with the left front A-pillar vertical plate 5 and the right front A-pillar vertical plate 6 at both ends along the Y direction, and is welded with the top of the front wall baffle 7 at the rear end, and is bolted with the left front shock tower 3 and the right front shock tower 4 through the rear cross beam assembly 14 at the bottom, and is bolted with the front shock cross beam 2 through the front windshield lower cross beam support plate 13 at the middle part.
[0053] Since the front windshield lower cross beam structure assembly has the above technical effects, the technical effects of the vehicle body adopting the front windshield lower cross beam structure assembly please refer to the above embodiment.
[0054] Embodiment three Based on the front windshield lower cross beam structure assembly, the embodiment of the present application further provides a vehicle, which includes a vehicle body, and the vehicle body is provided with the front windshield lower cross beam structure assembly.
[0055] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A front windshield lower crossbeam structure assembly, characterized in that: include: The front crossbeam assembly has a front end surface for supporting the front windshield and a horizontal flange at the rear end; The rear crossbeam assembly is provided at the rear end of the front crossbeam assembly. The rear crossbeam assembly includes a rear crossbeam body. The rear crossbeam body includes a first horizontal portion, a first vertical portion, and a second horizontal portion, which are arranged in sequence from front to back. The front end of the first horizontal portion is overlapped and fixed with the horizontal flange. The first horizontal portion is provided with a square hole, and the position of the square hole is corresponding to the installation position of the shock absorber. At least two sets of front windshield lower cross member lower longitudinal beams are welded to the bottom of the front cross member assembly and the rear cross member assembly.
2. The front windshield lower cross member structure assembly according to claim 1, characterized in that: The front crossbeam assembly is composed of a connected front windshield lower crossbeam body and a water trough rear body; the front windshield lower crossbeam body is arranged in three sections from front to back, including a front end face, a middle inclined face and a horizontal flange connected in sequence; the water trough rear body is in two sections, including an inclined front section and a horizontal rear section.
3. The front windshield lower cross member structure assembly according to claim 2, characterized in that: The rear end of the rear section of the rear body of the water trough is welded below the horizontal flange of the front windshield lower beam body; the top end of the front section is welded to one end of the front end face of the middle inclined front side of the front windshield lower beam body.
4. The front windshield lower cross member structure assembly according to claim 3, characterized in that: It also includes at least two sets of front windshield lower crossbeam support brackets, which are in a flared U-shape, one end of which is welded to the bottom surface of the front end face of the front windshield lower crossbeam body, and the other end is welded to the front side surface of the front section of the rear body of the water flow channel.
5. The front windshield lower cross member structure assembly according to claim 2, characterized in that: The rear crossbeam assembly includes a rear crossbeam body, a rear crossbeam vertical plate, and a rear crossbeam lower plate; the rear crossbeam body includes a first horizontal portion, a first vertical portion, and a second horizontal portion connected in sequence from front to rear to form a Z-shaped structure; the lower portion of the rear end of the first horizontal portion is connected to the upper end of the rear crossbeam vertical plate, the rear crossbeam lower plate is located below the rear crossbeam body, the lower portion of the second horizontal portion is overlapped and fixed to the upper end of the rear end of the rear crossbeam lower plate, and the front end of the rear crossbeam lower plate is welded to the lower end of the rear crossbeam vertical plate.
6. The front windshield lower cross member structure assembly according to claim 5, characterized in that: The rear cross beam body, the rear cross beam vertical plate and the rear cross beam lower plate form a cavity with a quadrilateral cross section, and multiple groups of reinforcing plate structures are welded in the cavity.
7. The front windshield lower cross member structure assembly according to claim 5, characterized in that: The lower longitudinal beam of the front windshield lower cross beam is in a cross-shaped structure, and the rear end section height thereof gradually increases. The rear end of the lower longitudinal beam of the front windshield lower cross beam is welded to the front side of the rear cross beam vertical plate.
8. The front windshield lower cross member structure assembly according to claim 7, characterized in that: A front windshield lower cross beam support plate is provided at the bottom of the lower longitudinal beam of each group of front windshield lower cross beams. Its cross section is L-shaped, including a horizontal upper plate structure and a vertical lower plate structure. The upper plate structure is screwed to the bottom surface of the lower longitudinal beam of the front windshield lower cross beam, and the lower plate structure is connected to the front reducing beam arranged along the Y direction by bolts.
9. A vehicle body, characterized in that: The vehicle body structure is provided with a front windshield lower crossbeam structure assembly as described in any one of claims 1-8, the two ends of the front windshield lower crossbeam structure assembly along the Y direction are respectively welded to the left front A-pillar vertical plate and the right front A-pillar vertical plate, and the rear end is welded to the top of the front panel.
10. A vehicle, characterized in that: A vehicle employs the vehicle body according to claim 9.