Top side rail assembly and vehicle

Abstract

This invention discloses a top edge beam assembly, comprising an A-pillar exterior trim panel sub-assembly and a top edge beam exterior trim panel sub-assembly connected to each other. The A-pillar exterior trim panel sub-assembly includes an A-pillar exterior trim panel body and an A-pillar exterior trim panel inner panel made of polydicyclopentadiene material. The A-pillar exterior trim panel body and the A-pillar exterior trim panel inner panel are fixedly connected by a first connecting structure, forming a cavity structure. The top edge beam exterior trim panel sub-assembly includes a top edge beam exterior trim panel body and a top edge beam exterior trim panel inner panel made of polydicyclopentadiene material. The top edge beam exterior trim panel body and the top edge beam exterior trim panel inner panel are fixedly connected by a second connecting structure, forming a cavity structure. In this invention, all major components are made of polydicyclopentadiene material, which itself has the characteristics of low density, high specific strength, and high specific modulus. Through optimized cavity structure design, significant weight reduction of the overall components can be achieved while ensuring structural rigidity and strength. This invention also discloses a vehicle.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology. Specifically, this invention relates to a top edge beam assembly and a vehicle. Background Technology

[0002] With the transformation of the energy structure and the increasing scarcity of oil resources, the market for new energy vehicles, especially electric vehicles, is expanding rapidly. Lightweight vehicle body design, as one of the key technologies for improving the driving range of electric vehicles, has become a key focus of industry development. The roof beam, as an important structural and aesthetic component of the upper side panel of the vehicle body, directly affects the vehicle's weight, performance, cost, and environmental friendliness through the selection of its materials and manufacturing processes.

[0003] Currently, the following manufacturing methods are mainly used for automotive roof beams, but all of them have varying degrees of defects:

[0004] 1. Traditional Steel Stamping and Welding Solution: Currently, the vast majority of vehicle models use a one-piece steel design for the top edge beam and side panel outer body. The manufacturing process typically involves assembling multiple independent stamped parts, such as the inner and outer side panels and internal reinforcing plates, through welding. This solution has significant drawbacks: First, each stamped part requires multiple processes including drawing, trimming, punching, and shaping, relying on multiple sets of complex molds, resulting in high mold costs and long development cycles. Second, the cumulative positioning errors generated during welding of multiple parts affect the dimensional accuracy of the assembly, thus impacting the overall vehicle assembly quality and appearance. Third, the steel stamping process and subsequent anti-corrosion treatments such as electrophoresis and spraying are energy-intensive and easily generate pollutants such as wastewater and exhaust gas, which is inconsistent with the development trend of green manufacturing.

[0005] 2. Conventional Plastic Injection Molding Solution: In pursuit of lightweight design, some electric vehicles have begun to experiment with using common thermoplastics such as polypropylene (PP) to manufacture the top edge beams via injection molding. However, this solution is limited by the inherent properties of the materials, resulting in significant problems: PP and similar materials have a high coefficient of thermal expansion, causing the dimensions of the parts to be significantly affected by changes in ambient temperature. The dimensions of the products fluctuate considerably in high summer temperatures and low winter temperatures. This dimensional instability can easily lead to changes in assembly gaps, abnormal noises, and even sealing problems during long-term vehicle use, seriously affecting the reliability, appearance consistency, and user experience of the entire vehicle.

[0006] 3. Sheet Molding Compound (SMC) Compression Molding Solution: As an alternative, SMC composite materials are sometimes used to manufacture top edge beams through compression molding. While this solution achieves high structural strength, its drawbacks are also significant: First, the fluidity of SMC limits the complexity of the product structure, making it difficult to achieve highly integrated functional designs; second, SMC has a high density, and to achieve the same size and stiffness, the weight of its parts is typically about 30% higher than that of plastic solutions, significantly reducing the benefits of lightweighting; third, SMC is inherently a brittle material, and its impact resistance is inferior to that of metals and tough engineering plastics, posing potential risks when dealing with side impacts or gravel impacts.

[0007] This invention provides a top edge beam assembly, specifically addressing how to significantly reduce the weight and cost of electric vehicles while effectively improving the strength and rigidity of the upper top edge beam of the electric vehicle side panel. Summary of the Invention

[0008] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a top side beam assembly, which aims to significantly reduce the weight and cost of electric vehicles while effectively improving the strength and rigidity of the upper top side beam of the electric vehicle side panel.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a top edge beam assembly, including a connected A-pillar exterior trim panel sub-assembly and a top edge beam exterior trim panel sub-assembly;

[0010] The A-pillar exterior trim assembly includes an A-pillar exterior trim body and an A-pillar exterior trim inner panel made of polydicyclopentadiene material. The A-pillar exterior trim body and the A-pillar exterior trim inner panel are fixedly connected by a first connecting structure to form a first cavity.

[0011] The top edge beam exterior trim assembly includes a top edge beam exterior trim body made of polydicyclopentadiene material and at least one top edge beam exterior trim inner panel. The top edge beam exterior trim body and the at least one top edge beam exterior trim inner panel are fixedly connected by a second connecting structure to form a second cavity.

[0012] Both the first connection structure and the second connection structure are ultrasonic puncture welding connection structures.

[0013] The A-pillar exterior trim panel assembly and the top edge beam exterior trim panel assembly are connected by a snap-fit ​​structure; the snap-fit ​​structure includes a hook provided on the A-pillar exterior trim panel body and a first snap-fit ​​hole provided on the top edge beam exterior trim panel body and cooperating with the hook;

[0014] The hook is formed by folding down the end of the A-pillar exterior trim panel.

[0015] Both the A-pillar exterior panel and the top edge beam exterior panel are long strip-shaped plate structures, with two long sides extending to the same side with flanges, and one of the flanges is further bent and extended to form a corner.

[0016] Both the A-pillar exterior panel and the top edge beam exterior panel are provided with a second snap-fit ​​hole and a positioning pin for positioning with the corresponding inner panel.

[0017] Both the inner panel of the A-pillar exterior trim and the inner panel of the top edge beam exterior trim are long strip-shaped plate structures, and are provided with longitudinally protruding U-shaped feature ribs along their length, so that the cross-section of the inner panel is Ω-shaped.

[0018] On the outer wall surface of the Ω-shaped structure of the inner panel of the A-pillar exterior trim panel and the inner panel of the top edge beam exterior trim panel, multiple sheet-like reinforcing ribs are arranged laterally.

[0019] Positioning holes are provided on both the inner panel of the A-pillar exterior trim panel and the inner panel of the top edge beam exterior trim panel; and / or, a positioning pin for positioning with the side beam of the vehicle body frame is provided on the inner panel of the top edge beam exterior trim panel; and / or, a snap-fit ​​hole for installing a buckle is provided on the inner panel.

[0020] The top edge beam outer trim panel has two inner panels, and the two top edge beam outer trim panel inner panels include a first inner panel segment and a second inner panel segment arranged along the length direction of the top edge beam outer trim panel body.

[0021] The rear end of the top edge beam exterior panel sub-assembly is also provided with a rear cover plate, which is snapped onto the second inner panel section.

[0022] The present invention also provides a vehicle, including a body frame side beam and the aforementioned top side beam assembly, wherein the A-pillar exterior trim sub-assembly and the top side beam exterior trim sub-assembly are respectively installed to the body frame side beam by clips and bolts.

[0023] The purpose of this invention is to ensure that all major components of the A-pillar exterior trim sub-assembly and the top edge beam exterior trim sub-assembly are made of polydicyclopentadiene material, which has the characteristics of low density, high specific strength, and high specific modulus. Through optimized cavity structure design, significant weight reduction of the overall components can be achieved while ensuring structural rigidity and strength, directly contributing to improving the driving range of electric vehicles. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the automotive roof edge beam exterior trim panel sub-assembly structure in this invention;

[0025] Figure 2 This is a schematic diagram of the sub-assembly structure of the automotive A-pillar exterior trim panel in this invention;

[0026] Figure 3This is an exploded view of the automotive A-pillar exterior trim panel sub-assembly in this invention;

[0027] Figure 4 This is an exploded view of the automotive roof edge beam exterior trim panel sub-assembly in this invention;

[0028] Figure 5 This is a partial view of the automotive A-pillar exterior trim panel sub-assembly in this invention;

[0029] Figure 6 This is a partial view of the automotive roof edge beam exterior trim panel sub-assembly in this invention;

[0030] Figure 7 This is a cross-sectional view of the matching of the exterior trim panel of the A-pillar and the exterior trim panel of the top edge beam in this invention;

[0031] Figure 8 This is a cross-sectional view of the positioning pin installation of the automotive top edge beam exterior trim panel sub-assembly in this invention;

[0032] Figure 9 This is a cross-sectional view of the snap-fit ​​installation of the automotive A-pillar exterior trim panel sub-assembly in this invention;

[0033] Figure 10 This is a cross-sectional view of the snap-fit ​​installation of the automotive roof edge beam exterior trim panel sub-assembly in this invention;

[0034] Figure 11 This is a schematic diagram of the clips used in the automotive roof edge beam exterior trim panel sub-assembly of this invention;

[0035] The markings in the above figures are as follows: 1- A-pillar exterior trim panel sub-assembly; 11- A-pillar exterior trim panel body; 12- A-pillar exterior trim panel inner panel; 111, first positioning pin; 112, second positioning pin; 121, first positioning hole; 122, second positioning hole; 2- Top edge beam exterior trim panel sub-assembly; 21- Top edge beam exterior trim panel body; 22- First inner panel segment; 23- Second inner panel segment; 24- Rear cover; 211- Third positioning pin; 221- Fourth positioning pin; 3, Clip A; 4- Clip B; 5- Body frame side beam; 6- Upper stop outside the door opening; 7- Upper stop inside the door opening; 8- Body side panel outer panel. Detailed Implementation

[0036] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," and similar expressions used in this document are for illustrative purposes only.

[0038] It should be noted that in the following embodiments, the terms "first", "second", "third" and "fourth" do not represent an absolute distinction in structure and / or function, nor do they represent the order of execution, but are merely for the convenience of description.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] Firstly, such as Figures 1 to 11 As shown, this embodiment of the invention provides a top edge beam assembly, including an A-pillar exterior trim panel sub-assembly 1 and a top edge beam exterior trim panel sub-assembly 2 connected to each other;

[0041] The A-pillar exterior trim assembly 1 includes an A-pillar exterior trim body 11 and an A-pillar exterior trim inner panel 12 made of polydicyclopentadiene (PDCPD) material. The A-pillar exterior trim body 11 and the A-pillar exterior trim inner panel 12 are fixedly connected by a first connecting structure to form a first cavity.

[0042] The top edge beam exterior trim assembly 2 includes a top edge beam exterior trim body 21 made of polydicyclopentadiene (PDCPD) material and at least one top edge beam exterior trim inner panel. The top edge beam exterior trim body 21 and at least one top edge beam exterior trim inner panel are fixedly connected by a second connection structure to form a second cavity.

[0043] Among them, the A-pillar exterior trim panel sub-assembly 1 and the top edge beam exterior trim panel sub-assembly 2 are connected to each other along the length of the vehicle's body frame edge beam 5.

[0044] Specifically, this invention addresses the technical deficiencies in existing automotive top side beams by providing a one-piece automotive top side beam based on PDCPD material through reaction injection molding. By using PDCPD material for one-piece injection molding, it can significantly reduce the weight and cost of electric vehicles and shorten the production cycle, while effectively improving the strength and rigidity of the upper side beam of the electric vehicle side panel.

[0045] In this embodiment of the invention, the A-pillar exterior trim assembly 1 consists of an A-pillar exterior trim body 11 made of PDCPD material and an A-pillar exterior trim inner panel 12 made of PDCPD material. The A-pillar exterior trim body 11 and the A-pillar exterior trim inner panel 12 are welded and fixed together by an ultrasonic piercing welding process, forming a sealed cavity structure between them. This ultrasonic piercing welding connection structure constitutes the first connection structure, ensuring a reliable connection between the A-pillar exterior trim body 11 and the inner panel and the overall structural strength.

[0046] In this embodiment of the invention, the top edge beam exterior panel assembly 2 is composed of a top edge beam exterior panel body 21 made of PDCPD material and a top edge beam exterior panel inner panel made of PDCPD material. The top edge beam exterior panel body 21 and the top edge beam exterior panel inner panel are welded and fixed by ultrasonic piercing welding, forming a sealed cavity structure between them. This ultrasonic piercing welding connection structure constitutes a second connection structure, ensuring a reliable connection between the top edge beam exterior panel body 21 and the top edge beam exterior panel inner panel and the overall structural strength.

[0047] In this embodiment of the invention, the A-pillar exterior trim panel sub-assembly 1 and the top edge beam exterior trim panel sub-assembly 2 are connected by a snap-fit ​​structure; the snap-fit ​​structure includes a hook disposed on the A-pillar exterior trim panel body 11 and a first snap-fit ​​hole disposed on the top edge beam exterior trim panel body 21 and cooperating with the hook.

[0048] Specifically, such as Figures 5 to 7 As shown, at least one downwardly extending hook is integrally formed at the end edge of the A-pillar exterior trim panel body 11. Correspondingly, the front section of the top side beam exterior trim panel body 21 has first snap-fit ​​holes in a number and position matching the hooks. During assembly, the hooks on the A-pillar exterior trim panel sub-assembly 1 are aligned and snapped into the corresponding first snap-fit ​​holes on the top side beam exterior trim panel sub-assembly 2, thus achieving quick connection and initial fixation between the two sub-assemblies. This snap-fit ​​structure connects the A-pillar exterior trim panel sub-assembly 1 and the top side beam exterior trim panel sub-assembly 2. The snap-fit ​​structure provides clear and reliable assembly guidance and limits, especially in the X direction (front-to-back) and Z direction (up-down), ensuring uniform gap and smooth surface at the joint between the A-pillar exterior trim panel and the top side beam exterior trim panel, improving appearance quality. Furthermore, this structure eliminates the need for additional fasteners at the connection point, simplifying the assembly process, improving assembly efficiency on the production line, and reducing parts and management costs. Furthermore, the snap-fit ​​connection, as a reversible connection method, facilitates the disassembly of individual subassemblies during after-sales maintenance or replacement without damaging the surrounding structure, thus improving product maintainability. This design fully utilizes the excellent dimensional stability and toughness of PDCPD material, ensuring that the snap-fit ​​itself has sufficient strength and elasticity to maintain a reliable connection under long-term vehicle use and vibration conditions, avoiding loosening or abnormal noise caused by creep or aging.

[0049] Furthermore, the hook is formed by folding down the end of the A-pillar exterior trim panel body 11, and the first snap-fit ​​hole is a through hole provided in the top side beam exterior trim panel body 21. During assembly, the edge hook of the A-pillar exterior trim panel sub-assembly 1 is first aligned and inserted into the corresponding first snap-fit ​​hole of the top side beam exterior trim panel sub-assembly 2. This operation achieves accurate positioning and temporary fixation of the two sub-assemblies in the X and Z directions of the vehicle, ensuring uniform gap and flat surface in the docking area. After completing the snap-fit ​​pre-positioning, the A-pillar exterior trim panel sub-assembly 1 is then fastened to the body frame side beam 5 with multiple bolts to achieve a final reliable connection. The process of first snap-fit ​​pre-fixing and then final bolt tightening during assembly ensures positional stability during the assembly process, avoids displacement before tightening, and ultimately ensures the structural strength and reliability of the connection. This step-by-step fixing strategy makes full use of the structural characteristics and design freedom of PDCPD material, reflecting an effective combination of functional integration and manufacturing convenience.

[0050] In embodiments of the present invention, such as Figure 3 , Figure 9 and Figure 10 As shown, both the A-pillar exterior trim panel body 11 and the top edge beam exterior trim panel body 21 are elongated plate-like structures, with flanges extending to the same side on both long sides. One of the flanges is further bent and extended to form a corner. This corner is designed to fit into the upper stop 6 of the door opening pre-welded to the side beam of the body frame, facilitating positioning with the upper stop 6 of the door opening welded to the side beam of the body frame. The double-flanged structure significantly enhances the overall bending stiffness and torsional stability of the exterior trim panel body as an elongated thin-walled component, effectively suppressing deformation that may occur during assembly or use. Furthermore, by bending one of the flanges a second time to form a corner with a specific geometric shape, precise positioning and fit with the existing body structure are achieved.

[0051] In this embodiment of the invention, both the A-pillar exterior trim panel body 11 and the top edge beam exterior trim panel body 21 are provided with second snap-fit ​​holes and positioning pins for positioning with the corresponding inner panels. Two inner panels are provided for the top edge beam exterior trim panel, each comprising a first inner panel segment 22 and a second inner panel segment 23 arranged along the length of the top edge beam exterior trim panel body 21. The top edge beam exterior trim panel body 21 is welded together with the first inner panel segment 22 and the second inner panel segment 23 using ultrasonic piercing welding to form a cavity structure.

[0052] Multiple positioning holes are provided on the inner panel 12 of the A-pillar exterior trim, the first inner panel section 22, and the second inner panel section 23. In particular, a positioning pin is also provided on the first inner panel section 22. In addition, multiple snap-fit ​​holes for installing plastic clips are provided on each of the above-mentioned inner panels.

[0053] Specifically, such as Figure 6As shown, multiple positioning pins are formed on the outer trim panel body 21 of the top edge beam, including a third positioning pin 211 and a fourth positioning pin 221. These positioning pins correspond to and engage with two positioning holes on the first inner panel section 22 and two positioning holes on the second inner panel section 23, respectively, to achieve precise alignment between the outer trim panel body 21 of the top edge beam and the two inner panel sections before welding, thereby ensuring the accuracy of their relative positions. Three waterproof plastic clips are installed on the first inner panel section 22, and four plastic clips are installed on the second inner panel section 23.

[0054] like Figure 3 As shown, the A-pillar exterior trim panel body 11 is formed with a first positioning pin 111 and a second positioning pin 112. They respectively cooperate with the first positioning hole 121 and the second positioning hole 122 on the A-pillar exterior trim panel inner panel 12 to ensure precise alignment of the A-pillar exterior trim panel body 11 and the inner panel during welding assembly. Three waterproof plastic clips are also installed on the A-pillar exterior trim panel inner panel 12. Based on this structure, the A-pillar exterior trim panel sub-assembly 1 can achieve initial connection and positioning with the vehicle body frame side beam 5 through the three plastic clips.

[0055] Furthermore, such as Figure 8 As shown, the top edge beam exterior trim assembly 2 achieves initial installation positioning by engaging the locating pins on its first inner panel section 22 with the corresponding structure on the body frame side beam 5. For example... Figure 9 and Figure 10 As shown, the sub-assembly can be initially snapped and fixed to the body frame side beam 5 and the body side outer panel 8 by means of the plastic clips distributed on the first inner panel section 22 and the second inner panel section 23. On this basis, multiple bolts are then used to finally fasten the top side beam outer trim panel sub-assembly 2 to the body frame side beam 5 and the body side outer panel 8.

[0056] By using positioning holes on the inner panel and positioning pins on the main body, accurate alignment can be achieved at both the sub-assembly welding and assembly levels and the assembly-to-vehicle installation levels, effectively eliminating accumulated errors and ensuring the final product's dimensional accuracy and appearance quality. Simultaneously, the installation strategy of initial fixing with snap-fits and final bolt tightening greatly simplifies the assembly line process. The snap-fits provide rapid pre-positioning and holding force, facilitating precise bolt tightening and improving assembly efficiency. Furthermore, the snap-fit ​​mounting hole structure integrated on the inner panel fully reflects the high design freedom of PDCPD material, achieving structural and functional integration, reducing the use of additional mounting brackets, and contributing to lightweighting and cost control.

[0057] In this embodiment of the invention, the inner panel 12 of the A-pillar exterior trim is a long strip-shaped plate structure, and a U-shaped feature rib with longitudinal protrusions is provided along its length direction. This U-shaped reinforcing rib makes the inner panel 12 of the A-pillar exterior trim present an approximately Ω-shaped closed or semi-closed cross-sectional configuration in its cross-section.

[0058] In this embodiment of the invention, the first inner plate segment 22 is a long strip plate structure, and has longitudinally protruding U-shaped feature ribs along its length. These U-shaped reinforcing ribs make the first inner plate segment 22 present an approximately Ω-shaped closed or semi-closed cross-section configuration in its cross-section. Similarly, the second inner plate segment 23 is also a long strip plate structure, and has longitudinally protruding U-shaped feature ribs along its length. These U-shaped reinforcing ribs make the second inner plate segment 23 present an approximately Ω-shaped closed or semi-closed cross-section configuration in its cross-section.

[0059] The Ω-shaped cross-section design significantly enhances the mechanical properties of the sub-assembly. Firstly, this closed cross-section provides excellent bending and torsional stiffness, enabling the inner panel to effectively bear and transfer structural loads from the roof and side panels, thus improving the overall rigidity of the top edge beam assembly. Furthermore, the longitudinally continuous U-shaped stiffeners, serving as the primary reinforcing structure, greatly enhance the longitudinal stability of the thin-walled panel, preventing local buckling instability under compression or impact. In addition, this cross-sectional shape achieves a higher moment of inertia with the same material usage, achieving an optimized balance between material efficiency and lightweighting. From a manufacturing perspective, this structure can be precisely molded in one step using PDCPD material through a reactive injection molding process, eliminating the need for subsequent complex welding or assembly, ensuring dimensional consistency and reducing production costs.

[0060] In this embodiment of the invention, multiple sheet-like reinforcing ribs are laterally arranged on the outer wall surface of the Ω-shaped structure of the A-pillar outer trim inner panel 12, the first inner panel segment 22, and the second inner panel segment 23. These transverse ribs and the longitudinal Ω-shaped main ribs form an orthogonal grid-like reinforcement system, effectively constraining the deformation of the thin-walled panel in both longitudinal and transverse dimensions, significantly improving the crush resistance stability and overall rigidity of the inner panel in local areas. When the assembly is installed on the vehicle body, the ends of these laterally arranged sheet-like reinforcing ribs can directly abut or support the corresponding mounting surface of the vehicle body frame side beam 5, thereby assisting in bearing part of the component's load. More importantly, they provide rigid support at multiple key points, effectively suppressing minor deformations that may be caused by the flexibility of the parts themselves or installation stress, thus ensuring the final installation position accuracy of the top side beam assembly on the vehicle body and guaranteeing the assembly quality and appearance consistency of the entire vehicle.

[0061] In embodiments of the present invention, such as Figure 4 As shown, the rear end of the top edge beam exterior panel sub-assembly 2 is also provided with a rear cover plate 24, which is snapped onto the second inner panel section 23 to cover the rear internal structure.

[0062] The top edge beam assembly of the above structure has the following advantages:

[0063] 1. Automotive products made of PDCPD material offer high design freedom and can reduce weight by about 40% compared to traditional sheet metal stamping. As lightweight components, they meet the lightweight requirements of electric vehicles and not only have the advantages of energy saving and environmental protection, but also improve the driving range of electric vehicles.

[0064] 2. The PDCPD material molding process is similar to that of ordinary PP injection molding. Compared with traditional sheet metal stamping, it can reduce the number of molds and lower costs.

[0065] 3. Automotive products molded from PDCPD material exhibit greater dimensional and shape stability compared to those made from ordinary PP material, with a linear expansion coefficient of only 8 × 10⁻⁶. ^ -5 cm / (cm·K). In addition to its high mechanical properties, it also has excellent weather resistance, abrasion resistance, surface coating properties, electrical insulation, and acid and alkali resistance.

[0066] 3. Components made of PDCPD material offer high design freedom, allowing for pre-embedding, riveting, gluing, self-tapping, and drilling. They can also be used in structures with varying thicknesses, sandwich structures, and composite structures. Backside reinforcement with ribs provides better front shrinkage than PP material, reducing the need for complex component designs. The rib thickness of PDCPD material can reach [amount missing]. Main wall thickness.

[0067] 4. Automotive products made with PDCPD material have a 100% recycling rate for scraps, making them more environmentally friendly.

[0068] Secondly, embodiments of the present invention also provide a vehicle, including a body frame side beam 5 and a top side beam assembly with the above-mentioned structure, wherein the A-pillar exterior trim panel sub-assembly 1 and the top side beam exterior trim panel sub-assembly 2 are respectively installed to the body frame side beam 5 by clips and bolts.

[0069] The vehicle is an electric vehicle; this top edge beam assembly can be referenced. Figures 1 to 11 Further details will not be elaborated here. Since the vehicle of the present invention includes the top side beam assembly of the above embodiments, it possesses all the advantages of the aforementioned top side beam assembly.

[0070] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. The top edge beam assembly, characterized in that, This includes the connected A-pillar exterior trim panel sub-assembly and the top edge beam exterior trim panel sub-assembly; The A-pillar exterior trim assembly includes an A-pillar exterior trim body and an A-pillar exterior trim inner panel made of polydicyclopentadiene material. The A-pillar exterior trim body and the A-pillar exterior trim inner panel are fixedly connected by a first connecting structure to form a first cavity. The top edge beam exterior trim assembly includes a top edge beam exterior trim body made of polydicyclopentadiene material and at least one top edge beam exterior trim inner panel. The top edge beam exterior trim body and the at least one top edge beam exterior trim inner panel are fixedly connected by a second connecting structure to form a second cavity.

2. The top edge beam assembly according to claim 1, characterized in that, Both the first connection structure and the second connection structure are ultrasonic puncture welding connection structures.

3. The top edge beam assembly according to claim 1 or 2, characterized in that, The A-pillar exterior trim panel assembly and the top edge beam exterior trim panel assembly are connected by a snap-fit ​​structure; the snap-fit ​​structure includes a hook provided on the A-pillar exterior trim panel body and a first snap-fit ​​hole provided on the top edge beam exterior trim panel body and cooperating with the hook; The hook is formed by folding down the end of the A-pillar exterior trim panel.

4. The top edge beam assembly according to any one of claims 1 to 3, characterized in that, Both the A-pillar exterior panel and the top edge beam exterior panel are long strip-shaped plate structures, with two long sides extending to the same side with flanges, and one of the flanges is further bent and extended to form a corner.

5. The top edge beam assembly according to claim 4, characterized in that, Both the A-pillar exterior panel and the top edge beam exterior panel are provided with a second snap-fit ​​hole and a positioning pin for positioning with the corresponding inner panel.

6. The top edge beam assembly according to any one of claims 1 to 5, characterized in that, Both the inner panel of the A-pillar exterior trim and the inner panel of the top edge beam exterior trim are long strip-shaped plate structures, and are provided with longitudinally protruding U-shaped feature ribs along their length, so that the cross-section of the inner panel is Ω-shaped.

7. The top edge beam assembly according to claim 6, characterized in that, On the outer wall surface of the Ω-shaped structure of the inner panel of the A-pillar exterior trim panel and the inner panel of the top edge beam exterior trim panel, multiple sheet-like reinforcing ribs are arranged laterally.

8. The top edge beam assembly according to any one of claims 1 to 7, characterized in that, Positioning holes are provided on both the inner panel of the A-pillar exterior trim panel and the inner panel of the top edge beam exterior trim panel; and / or, a positioning pin for positioning with the side beam of the vehicle body frame is provided on the inner panel of the top edge beam exterior trim panel; and / or, a snap-fit ​​hole for installing a buckle is provided on the inner panel.

9. The top edge beam assembly according to any one of claims 1 to 8, characterized in that, The top edge beam outer trim panel has two inner panels, and the two top edge beam outer trim panel inner panels include a first inner panel segment and a second inner panel segment arranged along the length direction of the top edge beam outer trim panel body. The rear end of the top edge beam exterior panel sub-assembly is also provided with a rear cover plate, which is snapped onto the second inner panel section.

10. A vehicle, characterized in that, Includes the side beams of the vehicle body frame and the top side beam assembly as described in any one of claims 1 to 9.

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