A side panel structure for automobiles and automobiles
By using a double-door ring structure and a split-type side panel design, and employing laser welding and laser welding followed by thermoforming processes, the problems of numerous parts and heavy weight in existing technologies have been solved, achieving lightweight and efficient production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGFENG LIUZHOU MOTOR
- Filing Date
- 2023-08-16
- Publication Date
- 2026-06-30
AI Technical Summary
The existing automotive side panel structure has a large number of parts, and the overlapping welds are heavy, resulting in low production efficiency.
It adopts a double door ring structure and a split side panel design, which is constructed by welding splicing components, including A, B, and C pillar connecting plates and bottom sill connecting plates. It uses laser welding and laser splicing and then thermoforming processes to replace the traditional welding of multiple parts.
The number of parts was reduced, the weight of the car's side panel structure was lowered, the installation process was simplified, production efficiency was improved, and the aesthetic appearance was maintained.
Smart Images

Figure CN117068273B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automobile manufacturing, specifically to an automobile side panel structure and an automobile. Background Technology
[0002] In existing automotive body side panel structures, a three-layer structure is generally constructed by overlapping the outer side panel, the reinforcing plate, and the inner side panel. The outer side panel is mainly responsible for the appearance design, the reinforcing plate is mainly responsible for ensuring the structural strength of the vehicle meets collision requirements, and the inner panel is mainly responsible for the installation of various parts and components while working with the reinforcing plate to increase structural strength.
[0003] The side panel outer panel mostly adopts a structure that integrates the A, B, and C pillars, side door frame, bottom sill, and rear fender. Its main purpose is to completely cover the internal structure to improve the vehicle's aesthetics. The side panel reinforcement panel, on the other hand, is made by welding multiple parts. The number of parts is large, the overlapping area is large, and the parts are heavy. Summary of the Invention
[0004] The main objective of this invention is to propose a car side panel structure and a car, aiming to solve the problems of the large number of parts and heavy weight at the lap weld joints in existing car side panel structures.
[0005] To achieve the above objectives, the present invention proposes a vehicle side panel structure, wherein the vehicle side panel structure comprises:
[0006] The double-door ring structure is constructed by welding together splicing components; and,
[0007] The split-type side panel includes a front section and a rear section. The front section is located at the upper end of the double door ring structure and is fixedly connected to the double door ring structure. The rear section is located at the rear end of the double door ring structure and is fixedly connected to the double door ring structure.
[0008] The front section of the side panel and the rear section of the side panel are fixedly connected.
[0009] Optionally, the splicing component includes:
[0010] The A-pillar connecting plate extends vertically, and the lower end of the A-pillar connecting plate is straight.
[0011] The B-pillar connecting plate extends vertically, with its upper end and lower end both being straight.
[0012] The C-pillar connecting plate extends vertically, with the upper end of the C-pillar connecting plate extending along the front side as the upper section connecting plate and the lower end of the C-pillar connecting plate extending along the front side as the lower section connecting plate.
[0013] The side panel top edge connecting plate is streamlined in shape. The front section of the side panel top edge connecting plate connects to the A-pillar connecting plate, the rear section connects to the upper section of the C-pillar connecting plate, and the lower edge of the side panel top edge connecting plate extends downwards and connects to the upper end of the B-pillar connecting plate; and...
[0014] The bottom sill connecting plate extends in the front-to-back direction. The front end of the bottom sill connecting plate extends upward and connects to the lower end of the A-pillar connecting plate. The rear end of the bottom sill connecting plate extends backward and connects to the lower section of the C-pillar connecting plate. The upper edge of the bottom sill connecting plate extends upward and connects to the lower end of the B-pillar connecting plate.
[0015] The A-pillar connecting plate, the side wall top edge connecting plate, the B-pillar connecting plate, and the bottom edge sill connecting plate are connected in sequence to form a ring structure;
[0016] The B-pillar connecting plate, the side top edge connecting plate, the C-pillar connecting plate, and the bottom sill connecting plate are connected in sequence to form a ring structure.
[0017] Optionally, the A-pillar connecting plate is connected to the side wall top edge connecting plate and the bottom edge sill connecting plate by laser welding; the B-pillar connecting plate is connected to the side wall top edge connecting plate and the bottom edge sill connecting plate by laser welding; and the C-pillar connecting plate is connected to the side wall top edge connecting plate and the bottom edge sill connecting plate by laser welding.
[0018] Optionally, the weld between the A-pillar connecting plate and the bottom sill connecting plate and the weld between the B-pillar connecting plate and the bottom sill connecting plate are located on the same straight line; and / or,
[0019] The weld between the C-pillar connecting plate and the top edge connecting plate of the side wall, and the weld between the C-pillar connecting plate and the bottom edge sill connecting plate are located on the same straight line.
[0020] Optionally, the double-door ring structure is characterized by being spliced using a laser welding and then thermoforming process.
[0021] Optionally, the front section of the side panel is streamlined along the roof structure, and the front section of the side panel, the A-pillar connecting plate, the side top edge connecting plate, and the C-pillar connecting plate are connected by spot welding.
[0022] Optionally, the rear section of the side panel and the C-pillar connecting plate are connected by spot welding.
[0023] Optionally, it also includes a first exterior trim piece and a second exterior trim piece, wherein the first exterior trim piece is disposed at the connection between the front section of the side panel and the A-pillar connecting plate, and the second exterior trim piece is disposed at the connection between the front section of the side panel and the B-pillar connecting plate.
[0024] Optionally, it also includes a triangular window, which is disposed at the connection between the front section of the side panel, the rear section of the side panel, and the C-pillar connecting plate.
[0025] The present invention also proposes an automobile, the automobile including the automobile side panel structure, the side panel structure comprising:
[0026] The double-door ring structure is constructed by welding together splicing components; and,
[0027] The split-type side panel includes a front section and a rear section. The front section is located at the upper end of the double door ring structure and is fixedly connected to the double door ring structure. The rear section is located at the rear end of the double door ring structure and is fixedly connected to the double door ring structure.
[0028] The front section of the side panel and the rear section of the side panel are fixedly connected.
[0029] In the technical solution of this invention, the automotive side panel structure includes a double-door ring structure and a split-type side panel. In the prior art, the automotive side panel structure is generally composed of three layers: an outer side panel, an inner side panel, and a reinforcing side panel, which are overlapped. The outer side panel serves to conceal the overlapped structure. In this application, the double-door ring structure is constructed by welding splicing components, replacing some structural components of the reinforcing side panel and outer side panel in the prior art. These splicing components ensure the structural strength requirements of the entire vehicle. The split-type side panel includes a front section and a rear section. The front section is located at the upper end of the double-door ring structure and is fixedly connected to it. The rear section is located at the rear end of the double-door ring structure and is connected to it. The double-door ring structure is fixedly connected. In the prior art, the side panel is generally a one-piece structure, including A, B, and C pillars, side door frames, bottom sills, and rear fenders. In this application, the split side panel is divided into a front section and a rear section. This is used to cover the welds of the double-door ring structure, ensuring the aesthetic appearance of the car side panel while reducing its weight. Furthermore, the reduction in related structures also reduces the installation steps, thus accelerating production efficiency. In addition, a portion of the front section and a portion of the rear section of the side panel are fixedly connected to integrate the exterior components of the car side panel structure into a single unit, ensuring aesthetic appeal. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0031] Figure 1 This is a three-dimensional structural diagram of a car side panel in the prior art;
[0032] Figure 2 for Figure 1 A schematic diagram of the welding structure of automotive side panel reinforcement plates in existing technology;
[0033] Figure 3 This is a three-dimensional structural disassembly diagram of an embodiment of the automobile side panel structure provided by the present invention.
[0034] Figure 4 for Figure 3 A schematic diagram of the front section of the side panel;
[0035] Figure 5 for Figure 3A plan view of the rear section of the side outer panel;
[0036] Figure 6 for Figure 3 A plan view of the double-door ring structure in the diagram;
[0037] Figure 7 for Figure 3 A schematic diagram of the planar structure of an embodiment of the automotive side panel structure;
[0038] Figure 8 for Figure 3 A three-dimensional schematic diagram of the first exterior component;
[0039] Figure 9 for Figure 3 A three-dimensional schematic diagram of the second exterior trim piece;
[0040] Figure 10 for Figure 3 A three-dimensional diagram of the triangular window in the image.
[0041] Explanation of icon numbers:
[0042]
[0043]
[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0046] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0047] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.
[0048] In existing automotive body side panel structures, a three-layer structure is generally constructed by overlapping the outer side panel, the reinforcing plate, and the inner side panel. The outer side panel is mainly responsible for the appearance design, the reinforcing plate is mainly responsible for ensuring the structural strength of the vehicle meets collision requirements, and the inner panel is mainly responsible for the installation of various parts and components while working with the reinforcing plate to increase structural strength.
[0049] The side panel is mostly made up of a structure that integrates the A, B, and C pillars, side door frame, bottom sill and rear fender. Its purpose is to completely cover the internal structure to improve the vehicle’s aesthetics. The side reinforcement panel is made by welding multiple parts, with a large number of parts, a lot of overlapping areas, and heavy parts.
[0050] In view of this, the present invention provides an assembly device, Figures 1 to 2 This is a schematic diagram of the mechanism of a car side panel in the prior art. Figures 3 to 10 The following description of the automobile side panel structure provided by the present invention will be based on the accompanying drawings.
[0051] Please see Figures 1 to 2 In the prior art, the automotive side panel structure 200 generally includes a side panel outer plate 6 and a reinforcing plate 7. The side panel outer plate 6 includes A-pillars, B-pillars, C-pillars, side door frames, bottom sills, and rear fenders, primarily serving an aesthetic function, concealing the reinforcing plate 7 and the welds at the joints of the reinforcing plate 7 components. This structure is relatively complex and increases the weight of the automotive side panel structure 200. Furthermore, the reinforcing plate 7 in the prior art is generally composed of multiple parts, such as... Figure 2 As shown, multiple parts are welded together, and the overlapping area of the parts is large, which increases the weight of the overlapping area and further increases the weight of the car side structure 200. In addition, the large number of parts also increases the number of welding steps and reduces production efficiency.
[0052] In this application, please refer to Figures 3 to 5 The vehicle side panel structure 100 includes a double-door ring structure 1 and a split-type side panel 2. In the prior art, the vehicle side panel structure is generally composed of three layers: a side panel outer layer, a side panel inner layer, and a side panel reinforcing plate. The side panel outer layer serves to conceal the overlapping structure. In this application, the double-door ring structure 1 is constructed by welding splicing components, replacing some structural components of the side panel reinforcing plate and the side panel outer layer in the prior art. The splicing components can ensure the structural strength requirements of the entire vehicle. The split-type side panel 2 includes a front section 21 and a rear section 22. The front section 21 is located at the upper end of the double-door ring structure 1 and is fixedly connected to it. The rear section 22 is located at the rear end of the double-door ring structure 1 and is connected to it. The side panel 1 is fixedly connected. In the prior art, the side panel is generally an integral structure, including A, B, and C pillars, side door frames, bottom sills, and rear fenders. In this application, the split side panel 2 is divided into a front section 21 and a rear section 22 to cover the welds of the double door ring structure 1, ensuring the aesthetic appearance of the car side panel while reducing the weight of the car side panel structure 100. At the same time, the reduction of related structures also reduces the installation steps of the split side panel 2, thereby accelerating production efficiency. In addition, a portion of the structure of the front section 21 and a portion of the structure of the rear section 22 are fixedly connected to integrate the appearance components constituting the car side panel structure 100 into a whole, ensuring aesthetics.
[0053] Further, please refer to Figure 6The splicing components specifically include: A-pillar connecting plate 11, B-pillar connecting plate 12, C-pillar connecting plate 13, side wall top edge connecting plate 14, and bottom edge sill connecting plate 15. The A-pillar connecting plate 11 extends vertically, with its lower end being straight. The B-pillar connecting plate 12 extends vertically, with both its upper and lower ends being straight. The C-pillar connecting plate 13 extends vertically, with its upper end having a front-extending upper C-pillar connecting plate 131 (specifically, the connecting end of the upper C-pillar connecting plate 131 is straight), and its lower end having a front-extending lower C-pillar connecting plate 132 (also straight). The side panel top edge connecting plate 14 has a streamlined outer edge, with its front section connecting to the A-pillar connecting plate 11 and its rear section connecting to the upper C-pillar connecting plate 131. The side panel top edge connecting plate 14 extends downward and connects to the upper end of the B-pillar connecting plate 12; the bottom sill connecting plate 15 extends in the front-rear direction, the front end of the bottom sill connecting plate 15 extends upward and connects to the lower end of the A-pillar connecting plate 11, the rear end of the bottom sill connecting plate 15 extends upward and connects to the lower section connecting plate of the C-pillar, and the upper edge of the bottom sill connecting plate 15 extends upward and connects to the lower end of the B-pillar connecting plate 12; wherein, the A-pillar connecting plate 11, the side panel top edge connecting plate 14, the B-pillar connecting plate 12, and the bottom sill connecting plate 15 are sequentially connected to form a ring structure; the B-pillar connecting plate 12, the side panel top edge connecting plate 14, the C-pillar connecting plate 13, and the bottom sill connecting plate 15 are sequentially connected to form a ring structure, and the splicing assembly as a whole constitutes the double door ring structure 1.
[0054] It is understood that in the solution of the present invention, the splicing assembly is divided into 5 structures to replace the reinforcing plate in the prior art, reducing the number of parts and simplifying the subsequent installation process. The splicing assembly is divided into A-pillar connecting plate 11, B-pillar connecting plate 12 and C-pillar connecting plate 13. Each structure also plays the role of structural strength and meeting collision requirements of the reinforcing plate in the prior art. In addition, due to the straight setting of the connection points, some of its structures can meet the aesthetic function of serving as an appearance component after splicing.
[0055] Please see Figure 6The A-pillar connecting plate 11, the side panel top edge connecting plate 14, and the bottom sill connecting plate 15 are connected by laser welding. Similarly, the B-pillar connecting plate 12, the side panel top edge connecting plate 14, and the bottom sill connecting plate 15 are connected by laser welding. The C-pillar connecting plate 13, the side panel top edge connecting plate 14, and the bottom sill connecting plate 15 are also connected by laser welding. In other embodiments, electric welding or other methods can also be used for connection. In this embodiment, the advantage of using laser welding is that it is fast, which can increase production efficiency, and the depth of laser welding is greater, ensuring a deep weld between the two components and avoiding the situation where the internal parts are not welded due to excessive depth of the connecting plate.
[0056] Furthermore, the weld between the A-pillar connecting plate 11 and the bottom sill connecting plate 15 and the weld between the B-pillar connecting plate 12 and the bottom sill connecting plate 15 are located on the same straight line. In addition, the weld between the C-pillar connecting plate 13 and the side wall top edge connecting plate 14 and the weld between the C-pillar connecting plate 13 and the bottom sill connecting plate 15 are located on the same straight line. It is understandable that when the weld between the A-pillar connecting plate 11 and the bottom sill connecting plate 15 and the weld between the B-pillar connecting plate 12 and the bottom sill connecting plate 15 are on the same straight line, and when the weld between the C-pillar connecting plate 13 and the side panel top connecting plate 14 and the C-pillar connecting plate 13 and the bottom sill connecting plate 15 are on the same straight line, laser welding can be performed. The laser welding head can move straight along the line, and the A-pillar connecting plate 11 and the bottom sill connecting plate 15, and the B-pillar connecting plate 12 and the bottom sill connecting plate 15 can be welded back and forth. When welding the first two, the laser welding head does not need to adjust its position back and forth. On the one hand, this can reduce the laser welding stroke and improve production efficiency. On the other hand, it can also reduce the welding difficulty and reduce the cost of laser welding. The same principle applies to the welding of the C-pillar connecting plate 13 and the side panel top connecting plate 14, and the C-pillar connecting plate 13 and the bottom sill connecting plate 15.
[0057] Furthermore, the double-door ring structure 1 is joined using a laser welding and then thermoforming process. In this application, the advantages of laser welding are: firstly, because the related structures are welded together in a butt joint manner, compared to the traditional lap joint method, the volume of the weld area can be significantly reduced, thus reducing the weight of the double-door ring structure 1; secondly, laser welding has a smaller impact on stamping performance, thereby enabling differentiation in material properties and thicknesses for various functional areas, such as the A-pillar connecting plate 11, B-pillar connecting plate 12, and C-pillar connecting plate 13. This satisfies the performance requirements of each part while increasing material utilization, reducing assembly steps and processes, and improving production efficiency.
[0058] In addition, please see Figure 7 The front section 21 of the side outer panel is streamlined along the roof structure. The front section 21 of the side outer panel, the A-pillar connecting plate 11, the side top edge connecting plate 14, and the C-pillar connecting plate 13 are connected by spot welding. In this application, the front section 21 of the side outer panel is used to cover the welds between the A-pillar connecting plate 11, the side top edge connecting plate 14, and the C-pillar connecting plate 13. The front section 21 of the side outer panel also achieves the appearance effect of the side outer panel in the prior art, serving as a shaping component for the side top edge beam, simplifying the original side outer panel and achieving a weight reduction effect.
[0059] Similarly, please refer to Figure 7 The rear section 22 of the side panel and the C-pillar connecting plate 13 are connected by spot welding. In this application, the rear section 22 of the side panel is used to form the rear fender of the side panel in the prior art, which simplifies the original side panel and reduces weight.
[0060] In addition, please refer to this application. Figures 8 to 9 The vehicle side panel structure 100 also includes a first exterior trim piece 3 and a second exterior trim piece 4. The first exterior trim piece 3 is disposed at the connection between the front section 21 of the side panel and the A-pillar connecting plate 11, and the second exterior trim piece 4 is disposed at the connection between the front section 21 of the side panel and the B-pillar connecting plate 12. Since the front section 21 of the side panel, the A-pillar connecting plate 11, and the top edge connecting plate 14 of the side panel are connected by spot welding, there will be welding marks at the connection. At this time, the welding marks are covered by the first exterior trim piece 3, which can ensure the aesthetics of the vehicle side panel structure 100. Similarly, the front section 21 of the side panel, the B-pillar connecting plate 12, and the top edge connecting plate 14 of the side panel are also connected by spot welding, and there are welding marks. At this time, the welding marks are covered by the second exterior trim piece 4, which can maintain the aesthetics of the vehicle side panel structure 100.
[0061] Please see Figure 10The vehicle side panel structure 100 also includes a triangular window 5, which is located at the connection between the front section 21 of the side panel, the rear section 22 of the side panel, and the C-pillar connecting plate 13. The triangular window 5 is used to cover the welding marks at the connection between the front section 21 of the side panel, the rear section 22 of the side panel, and the C-pillar connecting plate 13, so as to maintain the aesthetics of the vehicle side panel structure 100.
[0062] Furthermore, the present invention also proposes an automobile, which includes the automobile side panel structure 100. The specific structure of the side panel structure is as described in the above embodiments. Since the automobile adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0063] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.
Claims
1. A side panel structure for automobiles, characterized in that, include: The double-door ring structure is constructed by welding together splicing components; and, The split-type side panel includes a front section and a rear section. The front section is located at the upper end of the double door ring structure and is fixedly connected to the double door ring structure. The rear section is located at the rear end of the double door ring structure and is fixedly connected to the double door ring structure. The front section of the side panel and the rear section of the side panel are fixedly connected. The splicing components include: The A-pillar connecting plate extends vertically, and the lower end of the A-pillar connecting plate is straight. The B-pillar connecting plate extends vertically, with its upper end and lower end both being straight. The C-pillar connecting plate extends vertically, with the upper end of the C-pillar connecting plate extending along the front side as the upper section connecting plate and the lower end of the C-pillar connecting plate extending along the front side as the lower section connecting plate. The side panel top edge connecting plate is streamlined in shape. The front section of the side panel top edge connecting plate connects to the A-pillar connecting plate, the rear section connects to the upper section of the C-pillar connecting plate, and the lower edge of the side panel top edge connecting plate extends downwards and connects to the upper end of the B-pillar connecting plate; and... The bottom sill connecting plate extends in the front-to-back direction. The front end of the bottom sill connecting plate extends upward and connects to the lower end of the A-pillar connecting plate. The rear end of the bottom sill connecting plate extends backward and connects to the lower section of the C-pillar connecting plate. The upper edge of the bottom sill connecting plate extends upward and connects to the lower end of the B-pillar connecting plate. The A-pillar connecting plate, the side wall top edge connecting plate, the B-pillar connecting plate, and the bottom edge sill connecting plate are connected in sequence to form a ring structure; The B-pillar connecting plate, the side wall top edge connecting plate, the C-pillar connecting plate, and the bottom edge sill connecting plate are connected in sequence to form a ring structure; The A-pillar connecting plate is connected to the top edge connecting plate of the side wall and the bottom edge sill connecting plate by laser welding; the B-pillar connecting plate is connected to the top edge connecting plate of the side wall and the bottom edge sill connecting plate by laser welding; the C-pillar connecting plate is connected to the top edge connecting plate of the side wall and the bottom edge sill connecting plate by laser welding. The weld between the A-pillar connecting plate and the bottom sill connecting plate and the weld between the B-pillar connecting plate and the bottom sill connecting plate are located on the same straight line; and / or, The weld between the C-pillar connecting plate and the top edge connecting plate of the side wall, and the weld between the C-pillar connecting plate and the bottom edge sill connecting plate are located on the same straight line.
2. The automobile side panel structure as described in claim 1, characterized in that, The double-door ring structure is assembled using a laser welding and then thermoforming process.
3. The automobile side panel structure as described in claim 1, characterized in that, The front section of the side panel is streamlined along the roof structure, and the front section of the side panel, the A-pillar connecting plate, the side top edge connecting plate, and the C-pillar connecting plate are connected by spot welding.
4. The automobile side panel structure as described in claim 1, characterized in that, The rear section of the side panel and the C-pillar connecting plate are connected by spot welding.
5. The automobile side panel structure as described in claim 1, characterized in that, It also includes a first exterior trim piece and a second exterior trim piece, wherein the first exterior trim piece is disposed at the connection between the front section of the side panel and the A-pillar connecting plate, and the second exterior trim piece is disposed at the connection between the front section of the side panel and the B-pillar connecting plate.
6. The automobile side panel structure as described in claim 1, characterized in that, It also includes a triangular window, which is located at the junction of the front section of the side panel, the rear section of the side panel, and the C-pillar connecting plate.
7. A car, characterized in that, The vehicle includes the vehicle side panel structure as described in any one of claims 1 to 6.