Automobile A-pillar top cover front cross beam joint structure

Abstract

The invention relates to the technical field of automobile body structures, and particularly discloses an automobile A-pillar top cover front cross beam joint structure which is characterized in that two A-pillar inner plates are arranged on the left side and the right side of an automobile body respectively, a left connecting plate is fixedly connected to one A-pillar inner plate, and a right connecting plate is fixedly connected to the other A-pillar inner plate; the top cover front cross beam assembly extends in the left-right direction of the automobile body, the two ends of the top cover front cross beam assembly are connected to the left connecting plate and the right connecting plate respectively, and compared with a traditional split type part welding structure, the top cover front cross beam assembly integrally adopts an integrated extrusion forming structure, so that the overall rigidity of the automobile body can be remarkably improved, and the service life of the automobile body is prolonged. And by virtue of the unique advantages of the extrusion forming process, not only are greater flexibility and diversity provided for product design, but also the number of required molds is effectively reduced, the production process flow is simplified, the efficiency and precision of production and processing are improved, the development and manufacturing cost is reduced, and the vehicle production takt is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile body structure, and particularly relates to an automobile A-pillar roof header front beam joint structure. BACKGROUND

[0002] The structural design of the roof header front beam assembly plays a key role in the performance of the whole vehicle, directly affects the torsional stiffness and torsional modal characteristics of the vehicle body, and plays a crucial role in the transmission path of the front collision and the top compression load. The existing roof header front beam assembly design scheme generally adopts a sheet metal stamping forming process. This scheme has obvious shortcomings: first, the number of parts is large, which leads to complicated production process and increases the process complexity; second, the overall size precision control of the assembly parts is difficult, which easily affects the assembly quality and the final performance. In addition, since multiple parts are involved, a large amount of human resources and time cost need to be invested in the development and design of the parts, which directly leads to a significant increase in the development cost of the whole vehicle. At the same time, with the rapid development of new energy vehicle technology, higher requirements are put forward for the vehicle's mileage, and the traditional steel upper body sill structure has been difficult to meet the increasingly stringent lightweight demand due to its high density.

[0003] Therefore, there is an urgent need for an automobile A-pillar roof header front beam joint structure to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide an automobile A-pillar roof header front beam joint structure which can effectively improve the production and processing efficiency and reduce the development and manufacturing cost.

[0005] To achieve the above purpose, the present application adopts the following technical scheme:

[0006] The present application provides an automobile A-pillar roof header front beam joint structure, which comprises two A-pillar inner plates, a roof header front beam assembly, a left connecting plate and a right connecting plate. The two A-pillar inner plates are respectively arranged on the left and right sides of the vehicle body. The left connecting plate is fixedly connected to one of the A-pillar inner plates, and the right connecting plate is fixedly connected to the other A-pillar inner plate. The roof header front beam assembly extends along the left-right direction of the vehicle body, and the two ends of the roof header front beam assembly are respectively connected to the left connecting plate and the right connecting plate. The roof header front beam assembly is an integrated extrusion formed structure.

[0007] As a preferred technical scheme of the above automobile A-pillar roof header front beam joint structure, the roof header front beam assembly comprises an upper plate body, a lower plate body and a plurality of support plates. The upper plate body and the lower plate body form a hollow channel structure, and a plurality of support plates are arranged in the channel structure in the left-right direction of the vehicle body to divide the channel structure into a plurality of cavities.

[0008] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the number of the support plates is two, and the two support plates are arranged in the channel structure at intervals in the left-right direction of the vehicle body to divide the channel structure into three cavities, and the three cavities are the first cavity, the second cavity and the third cavity respectively.

[0009] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the length of the first cavity is L1, the length of the second cavity is L2, and the length of the third cavity is L3. Among them, L1, L2 and L3 satisfy: L1:L2:L3 = 3:4:3.

[0010] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the sum of the lengths of the first cavity, the second cavity and the third cavity is L. Among them, L satisfies: 140mm ≤ L ≤ 160mm.

[0011] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the heights of the first cavity, the second cavity and the third cavity are equal and are all H. Among them, H satisfies: 25mm ≤ H ≤ 28mm.

[0012] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the cross-section of the front cross member assembly of the roof cover is in the shape of a Chinese character 'Mu'.

[0013] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the front cross member assembly of the roof cover is made of aluminum alloy material.

[0014] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the joint structure of the front cross member of the A-pillar roof cover of the vehicle further includes two upper reinforcing plates of the A-pillar. The two upper reinforcing plates of the A-pillar correspond to the two inner plates of the A-pillar one by one, and the upper reinforcing plates of the A-pillar are fixedly arranged on the inner plates of the A-pillar.

[0015] As a preferred technical solution of the above-mentioned joint structure of the front cross member of the A-pillar roof cover of the vehicle, the left connecting plate and the right connecting plate are respectively fixedly lapped under the ends of the front cross member assembly of the roof cover.

[0016] The beneficial effects of the present invention are:

[0017] The application provides an automobile A-pillar roof front beam joint structure, which comprises two A-pillar inner plates, a roof front beam assembly, a left connecting plate and a right connecting plate, the two A-pillar inner plates are respectively arranged on the left and right sides of a vehicle body, the left connecting plate is fixedly connected to one of the A-pillar inner plates, the right connecting plate is fixedly connected to the other A-pillar inner plate, the roof front beam assembly extends along the left-right direction of the vehicle body, and the two ends of the roof front beam assembly are respectively connected to the left connecting plate and the right connecting plate, and the roof front beam assembly is integrally extruded and formed. By virtue of the unique advantages of the extrusion forming process, the automobile A-pillar roof front beam joint structure provided by the application can not only provide greater flexibility and diversity for product design, but also effectively reduce the number of required molds, simplify the production process, improve the production efficiency and precision, reduce the development and manufacturing cost, and greatly improve the vehicle production rhythm. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure schematic view of the automobile A-pillar roof front beam joint structure provided by the application is provided.

[0019] Figure 2 A partial structure schematic view of the automobile A-pillar roof front beam joint structure provided by the application is provided.

[0020] Figure 3 A structure schematic view of the roof front beam assembly provided by the application is provided. Figure 1

[0021] Figure 4 A structure schematic view of the roof front beam assembly provided by the application is provided. Figure 2

[0022] Figure 5 A structure schematic view of the roof front beam assembly provided by the application is provided. Figure 3

[0023] Figure 6 A cross-sectional schematic view of the roof front beam assembly provided by the application is provided. Figure 1

[0024] Figure 7 A cross-sectional schematic view of the roof front beam assembly provided by the application is provided. Figure 2

[0025] Wherein:

[0026] 1, A-pillar inner plate;

[0027] 2, roof front beam assembly; 21, upper plate body; 22, lower plate body; 23, support plate;

[0028] ​​​​​3, left connecting plate; 4, right connecting plate; 5, cavity. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar components have the same or similar designations and functions throughout the various figures and like reference numerals denote like elements. The embodiments described below are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are merely used for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0031] Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0033] The technical solutions of the present application are further illustrated below in conjunction with the drawings and through specific embodiments.

[0034] As Figures 1 to 7As shown in the figure, this embodiment provides a joint structure for the front crossbeam of the A-pillar roof of an automobile. This joint structure for the front crossbeam of the A-pillar roof of an automobile includes two inner A-pillar panels 1, a front crossbeam assembly of the roof 2, a left connecting plate 3, and a right connecting plate 4. The two inner A-pillar panels 1 are respectively arranged on the left and right sides of the vehicle body. The left connecting plate 3 is fixedly connected to one of the inner A-pillar panels 1, and the right connecting plate 4 is fixedly connected to the other inner A-pillar panel 1. The front crossbeam assembly of the roof 2 extends along the left-right direction of the vehicle body, and both ends of the front crossbeam assembly of the roof 2 are respectively connected to the left connecting plate 3 and the right connecting plate 4. The front crossbeam assembly of the roof 2 is an integrally extruded forming structure. With such a setting, different from the traditional welded structure of split parts, the front crossbeam assembly of the roof 2 adopts an integrally extruded forming structure as a whole, which can significantly improve the overall stiffness of the vehicle body. And relying on the unique advantages of the extrusion forming process, it not only provides greater flexibility and diversity for product design, but also effectively reduces the number of required molds, simplifies the production process flow, improves the efficiency and precision of production and processing, and reduces the development and manufacturing costs, greatly improving the vehicle production beat.

[0035] Specifically, this embodiment exemplarily gives the following technical solutions: The front crossbeam assembly of the roof 2 includes an upper plate body 21, a lower plate body 22, and several support plates 23. The upper plate body 21 and the lower plate body 22 form a hollow channel structure. The several support plates 23 are arranged at intervals along the left-right direction of the vehicle body within the channel structure to divide the channel structure into several cavities 5. With such a setting, the front crossbeam assembly of the roof 2 adopts an upper and lower split structure design. Among them, the upper plate body 21 is an integrally extruded forming structure, and its main function is to solve the problem of the mating surface with the glass sunroof. This structure has a relatively high mating precision and can limit the gap surface difference between the glass sunroof and the front windshield, that is, it can ensure that the gap uniformity and surface flatness difference between the glass sunroof and the front windshield are controlled within a reasonable range, improving the appearance quality and the forming performance of the components; the lower plate body 22 and the several support plates 23 are mainly used to meet the installation requirements of the roof, sun visor, and interior rearview mirror. Through reasonable structural design, they provide a stable and accurate installation interface for these components, ensuring the assembly quality and use reliability of each component.

[0036] Furthermore, the cross-section of the front crossbeam assembly of the roof 2 is in the shape of a Chinese character 'Mu'.

[0037] In this embodiment, the number of support plates 23 is two. The two support plates 23 are arranged at intervals along the left-right direction of the vehicle body within the channel structure to divide the channel structure into three cavities 5. The three cavities 5 are respectively the first cavity, the second cavity, and the third cavity. Of course, in other embodiments, the actual number of support plates 23 can also be set according to actual needs and will not be further limited here.

[0038] In this embodiment, please refer to Figure 6As shown, in order to effectively improve the cross-section force of the front roof cross beam assembly 2 structure, the length of the first cavity is L1, the length of the second cavity is L2, and the length of the third cavity is L3, and the sum of the lengths of the first cavity, the second cavity and the third cavity is L, L=L1+L2+L3, wherein L1, L2 and L3 satisfy: L1:L2:L3=3:4:3; L satisfies: 140mm≤L≤160mm.

[0039] Optionally, please refer to Figure 7 As shown, the height of the first cavity, the height of the second cavity and the height of the third cavity are equal and are all H, wherein H satisfies: 25mm≤H≤28mm. In this way, the arrangement space can be further saved, the space utilization rate is improved, the torsional stiffness of the overall front roof cross beam assembly 2 can be effectively improved, the modal performance is significantly improved, and the overall stability and dynamic response characteristics of the structure are enhanced.

[0040] Optionally, the front roof cross beam assembly 2 is made of aluminum alloy material. In this way, the front roof cross beam assembly 2 adopts an integrated extruded aluminum structure, which has high overall rigidity, can provide better support for the vehicle body structure, increase the stability and structural rigidity of the vehicle, so that the front roof cross beam assembly 2 has a lighter weight under the premise of meeting the strength and rigidity requirements, which is beneficial to realize the lightweight of the whole vehicle, improve the fuel economy and driving performance.

[0041] It should be noted that the aluminum material also has good corrosion resistance and can resist the erosion of harsh environmental conditions and chemical substances, prolonging the service life of the vehicle body. The aluminum material can be formed by extrusion technology, which is simpler than the traditional vehicle body manufacturing process, can improve production efficiency and reduce manufacturing cost. The aluminum material has good plasticity and can realize more diversified vehicle body design and modeling to meet the needs of users for individualization and fashion. In addition, the aluminum material has high recyclability and can be recycled and reused, which is beneficial to resource conservation and environmental protection.

[0042] Optionally, in order to further optimize the force flow distribution and reduce stress concentration, the automobile A-pillar front roof cross beam joint structure further comprises two A-pillar upper reinforcing plates, and the two A-pillar upper reinforcing plates correspond to the two A-pillar inner plates 1 one by one, and the A-pillar upper reinforcing plates are fixedly arranged on the A-pillar inner plates 1.

[0043] Optionally, the left connecting plate 3 and the right connecting plate 4 are respectively fixedly overlapped below the end portions of the front roof cross beam assembly 2. In this way, the left connecting plate 3 and the right connecting plate 4 can act as an efficient “structure bracket” to transmit the load from the roof to the A-pillar inner plate 1 and the A-pillar upper reinforcing plate in the shortest path and the largest area, thereby significantly improving the local rigidity and strength of the connecting joint.

[0044] Obviously, the above embodiments of the present application are merely example for clearly explaining the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A joint structure for the front crossbeam of an automobile A-pillar roof, characterized in that, It includes two A-pillar inner panels (1), a front roof crossbeam assembly (2), a left connecting plate (3), and a right connecting plate (4). The two A-pillar inner panels (1) are respectively arranged on the left and right sides of the vehicle body. The left connecting plate (3) is fixedly connected to one of the A-pillar inner panels (1), and the right connecting plate (4) is fixedly connected to the other A-pillar inner panel (1). The front roof crossbeam assembly (2) extends along the left-right direction of the vehicle body, and both ends of the front roof crossbeam assembly (2) are respectively connected to the left connecting plate (3) and the right connecting plate (4). The front roof crossbeam assembly (2) is an integrally extruded structure.

2. The automotive A-pillar roof front crossbeam joint structure according to claim 1, characterized in that, The front roof crossbeam assembly (2) includes an upper plate body (21), a lower plate body (22), and several support plates (23). The upper plate body (21) and the lower plate body (22) form a hollow channel structure. Several support plates (23) are arranged at intervals in the channel structure along the left-right direction of the vehicle body to divide the channel structure into several cavities (5).

3. The automotive A-pillar roof front crossbeam joint structure according to claim 2, characterized in that, The number of the support plates (23) is two. The two support plates (23) are arranged at intervals in the channel structure along the left-right direction of the vehicle body to divide the channel structure into three cavities (5). The three cavities (5) are respectively a first cavity, a second cavity, and a third cavity.

4. The automotive A-pillar roof front crossbeam joint structure according to claim 3, characterized in that, The length of the first cavity is L1, the length of the second cavity is L2, and the length of the third cavity is L3. Among them, L1, L2, and L3 satisfy: L1:L2:L3 = 3:4:

3.

5. The automotive A-pillar roof front crossbeam joint structure according to claim 4, characterized in that, The sum of the lengths of the first cavity, the second cavity, and the third cavity is L. Among them, L satisfies: 140mm ≤ L ≤ 160mm.

6. The automotive A-pillar roof front crossbeam joint structure according to claim 3, characterized in that, The heights of the first cavity, the second cavity, and the third cavity are equal and are all H. Among them, H satisfies: 25mm ≤ H ≤ 28mm.

7. The automotive A-pillar roof front crossbeam joint structure according to claim 3, characterized in that, The cross-section of the front roof crossbeam assembly (2) is in the shape of a Chinese character 'Mu'.

8. The automotive A-pillar roof front crossbeam joint structure according to any one of claims 1-7, characterized in that, The front roof crossbeam assembly (2) is made of aluminum alloy material.

9. The automotive A-pillar roof front crossbeam joint structure according to any one of claims 1-7, characterized in that, The automotive A-pillar front roof crossbeam joint structure further includes two A-pillar upper reinforcement plates. The two A-pillar upper reinforcement plates correspond to the two A-pillar inner panels (1) one by one, and the A-pillar upper reinforcement plates are fixedly arranged on the A-pillar inner panels (1).

10. The automotive A-pillar roof front crossbeam joint structure according to any one of claims 1-7, characterized in that, The left connecting plate (3) and the right connecting plate (4) are respectively fixedly lapped under the ends of the front roof crossbeam assembly (2).

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