Gull-wing door vehicle top beam structure, roof assembly and automobile

Abstract

The utility model relates to the technical field of automobiles, in particular to a gull-wing door vehicle top beam structure, a roof assembly and an automobile, the gull-wing door vehicle top beam structure comprises a front windshield upper cross beam, a roof rear cross beam and a longitudinal beam connected between the front windshield upper cross beam and the roof rear cross beam, and gull-wing door mounting parts are arranged on the left side and the right side of the middle of the longitudinal beam; the front end of the longitudinal beam is provided with a front mounting part which is in lap joint and fixed with a front windshield upper cross beam, and the rear end of the longitudinal beam is provided with a rear mounting part which is in lap joint and fixed with a car roof rear cross beam. The installation requirement of the gull-wing door can be met, and the collision safety performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, specifically to a gull-wing door vehicle roof beam structure, a roof assembly, and an automobile. Background Technology

[0002] With the continuous advancement of automotive technology, the opening and closing methods of car doors have also diversified. Currently, the market offers various door types such as "scissor doors," "gull-wing doors," and "suicide doors" to meet consumer demands. Among these, the unique and eye-catching "gull-wing doors" are increasingly favored by users.

[0003] While the gull-wing door design offers a unique visual impact, it also presents several significant design challenges. Firstly, for safety reasons, the gull-wing doors must possess a certain level of strength and rigidity to ensure side impact resistance, leading to increased weight and requiring high-strength hinges for opening. Secondly, since the gull-wing door hinges are located on the roof, which bears a significant portion of the weight, the roof assembly of a gull-wing door design places high demands on its rigidity and strength.

[0004] Traditional car roof structures typically consist of a front roof crossbeam assembly, a middle roof crossbeam assembly, and a rear roof crossbeam. This structure is clearly insufficient to meet the installation and structural strength requirements of gull-wing doors. Using such a roof to assemble "gull-wing doors" will result in substandard safety performance and will not adequately protect occupants during a car collision.

[0005] Traditional vehicle roof structures have numerous parts, and the complex interlocking relationships between these parts lead to problems such as excessively long dimensional chains and discontinuous structures at critical attachment points. The more parts there are, the more weak points the vehicle body has, significantly impacting its strength. The multi-part, multi-process welding method also substantially increases the cost of product development and extends the product debugging time.

[0006] With increasingly stringent requirements for fuel efficiency and carbon emission reduction, the demand for lightweight vehicles is also rising. Traditional windshield mounting structures cannot meet these requirements. Furthermore, to ensure uniform structural strength across the entire roof while maximizing passenger compartment space, the design of individual crossbeams is typically weak, necessitating an increase in their number to improve structural strength. However, this approach increases the overall vehicle weight, contradicting the trend towards lightweight construction.

[0007] In related technology, CN101121421A discloses a roof crossbeam for a passenger vehicle, including a front roof crossbeam, a rear roof crossbeam, and a middle roof crossbeam assembly. The middle roof crossbeam assembly includes a left support bracket welded to the left side roof assembly, a right support bracket welded to the right side roof assembly, and a middle roof crossbeam welded to the left and right supports. The left and right supports of the middle roof crossbeam include multiple transverse and longitudinal reinforcing ribs and bending structures, with transverse and longitudinal reinforcing ribs, and a bending structure on its cross-section. The middle roof crossbeam has a slightly upward arc shape longitudinally, with slightly protruding steps at both ends. This application strengthens the middle crossbeam through reinforcing ribs and other structural improvements, but it still cannot effectively accommodate gull-wing door installation and ensure reliable strength. Utility Model Content

[0008] The purpose of this utility model is to provide a gull-wing door vehicle roof beam structure, roof assembly, and automobile that can meet the installation requirements of gull-wing doors and improve collision safety performance.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] In a first aspect, this utility model discloses a gull-wing door vehicle roof beam structure, including a front windshield upper crossbeam, a roof rear crossbeam, and a longitudinal beam connecting the front windshield upper crossbeam and the roof rear crossbeam. Gull-wing door mounting portions are provided on the left and right sides of the middle of the longitudinal beam. The front end of the longitudinal beam is provided with a front mounting portion that overlaps and is fixed to the front windshield upper crossbeam, and the rear end of the longitudinal beam is provided with a rear mounting portion that overlaps and is fixed to the roof rear crossbeam.

[0011] Furthermore, the upper crossbeam of the front windshield is provided with a first mounting groove that is recessed forward, and the front mounting part that is adapted to the first mounting groove extends forward from the front end of the longitudinal beam.

[0012] Furthermore, the rear crossbeam of the roof has a second mounting groove recessed in the middle, and the rear mounting part adapted to the second mounting groove extends rearward from the rear end of the longitudinal beam.

[0013] Furthermore, the longitudinal beam is a one-piece die-cast aluminum alloy component.

[0014] Furthermore, the longitudinal beam has multiple first reinforcing ribs distributed in a mesh pattern and second reinforcing ribs penetrating the front and rear ends of the longitudinal beam on at least one side.

[0015] Furthermore, the longitudinal beam includes a base plate and side plates extending vertically downward or upward from the front and rear side edges of the base plate. The side plates and the base plate together form a cavity, and the first reinforcing rib is arranged in the cavity.

[0016] Furthermore, both the upper crossbeam of the windshield and the rear crossbeam of the roof are integrally molded parts.

[0017] Furthermore, the gull-wing door mounting portion includes a through hole for avoiding the gull-wing door mounting components and a mounting hole for fixing the hinge of the gull-wing door.

[0018] Secondly, this utility model provides a roof assembly, including the aforementioned gull-wing door vehicle roof beam structure.

[0019] Thirdly, this utility model provides an automobile, including the aforementioned roof assembly.

[0020] This utility model has the following unexpected beneficial effects:

[0021] The longitudinal beam of this invention is fixed to the upper crossbeam of the windshield at its front and rear ends via a front mounting part, and to the rear crossbeam of the roof via a rear mounting part. This ensures the structural strength of the longitudinal beam and, in the event of a side collision, can transfer collision energy to the upper crossbeam of the windshield and the rear crossbeam of the roof through the longitudinal beam, thus dispersing energy and improving collision safety. Furthermore, the presence of gull-wing door mounting parts on the left and right sides of the middle of the longitudinal beam fulfills the functional requirements for opening and closing gull-wing doors. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in 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 this utility model.

[0023] Figure 1 A schematic diagram of the gull-wing door vehicle top beam structure of this utility model is shown;

[0024] Figure 2 This diagram shows the connection between the longitudinal beam of this utility model and the upper crossbeam of the front windshield and the rear crossbeam of the roof;

[0025] Figure 3 A schematic diagram of the structure of the gull-wing door mounting part of this utility model is shown;

[0026] Figure 4 A schematic diagram of the structure of the first and second reinforcing ribs of this utility model is shown.

[0027] In the figure, 1—longitudinal beam, 11—front mounting part, 12—rear mounting part, 13—gull-wing door mounting part, 131—through hole, 132—mounting hole, 14—first reinforcing rib, 15—second reinforcing rib, 16—base plate, 17—side plate, 2—upper crossbeam of the front windshield, 21—first mounting groove, 3—rear crossbeam of the roof, 31—second mounting groove, 4—hinge. Detailed Implementation

[0028] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] In one embodiment, see Figures 1 to 3 As shown, this utility model discloses a gull-wing door vehicle roof beam structure, including a front windshield upper crossbeam 2, a roof rear crossbeam 3, and a longitudinal beam 1 connecting the front windshield upper crossbeam 2 and the roof rear crossbeam 3. Gull-wing door mounting parts 13 are provided on the left and right sides of the middle of the longitudinal beam 1. The front end of the longitudinal beam 1 is provided with a front mounting part 11 that overlaps and is fixed to the front windshield upper crossbeam 2, and the rear end of the longitudinal beam 1 is provided with a rear mounting part 12 that overlaps and is fixed to the roof rear crossbeam 3.

[0031] The upper crossbeam 2 of the windshield serves as a structural support for the front of the vehicle and is closely connected to the front structure to ensure the stability of the roof. The rear crossbeam 3 of the roof is located at the rear of the vehicle and corresponds to the upper crossbeam 2 of the windshield, sharing the weight and supporting function of the roof.

[0032] The longitudinal beam 1 connects the upper crossbeam 2 of the front windshield and the rear crossbeam 3 of the roof. It is the main supporting element in the roof beam structure. Its design not only ensures the integrity of the roof, but also provides the necessary structural support for the installation of the gull-wing doors.

[0033] The gull-wing door mounting parts 13 are located on the left and right sides of the middle of the longitudinal beam 1. These mounting parts are key components connecting the gull-wing door to the roof structure. Their design must ensure that the gull-wing door can open and close smoothly and safely, while providing sufficient support to prevent the door from sagging or deforming when open.

[0034] The front mounting part 11 is located at the front end of the longitudinal beam 1 and overlaps and is fixed with the upper crossbeam 2 of the windshield. This arrangement ensures a tight connection between the longitudinal beam 1 and the front structure and also improves the overall stability of the top beam structure.

[0035] The rear mounting section 12 is located at the rear end of the longitudinal beam 1 and overlaps and is fixed to the rear crossbeam 3 of the roof. Similarly, this design enhances the rear stability of the roof beam structure, making the entire roof structure more robust.

[0036] The design of the gull-wing door roof beam structure allows the gull-wing doors to open and close in a unique and eye-catching manner, increasing the vehicle's appeal and distinctiveness. At the same time, through rational structural design and material selection, this roof beam structure also ensures the vehicle's safety and stability, providing passengers with a more comfortable and safer riding environment.

[0037] This invention combines the installation of gull-wing doors with the vehicle's roof beam structure, thus satisfying the functional requirements of opening and closing the gull-wing doors while ensuring the stability and safety of the vehicle's roof beam structure.

[0038] In a preferred embodiment, see Figure 2 As shown, the front windshield upper crossbeam 2 has a first mounting groove 21 recessed in the middle, and the front mounting part 11, which is adapted to the first mounting groove 21, extends forward from the front end of the longitudinal beam 1.

[0039] The shape and size of the first mounting groove 21 are carefully calculated to ensure that it can perfectly fit with the front mounting part 11 and provide a stable connection point. The front mounting part 11 is formed by extending forward from the front end of the longitudinal beam 1, and its shape and size match the first mounting groove 21, so that the front mounting part 11 can be accurately inserted into the first mounting groove 21 to form a tight connection.

[0040] This configuration allows for a tight fit between the front mounting section 11 and the first mounting groove 21, thereby improving the overall stability of the top beam structure, ensuring a secure connection between the longitudinal beam 1 and the upper crossbeam 2 of the windshield, and also helping to disperse and resist various forces and vibrations generated during vehicle operation. It also helps improve manufacturing and assembly efficiency. Since the shape and dimensions of the front mounting section 11 and the first mounting groove 21 are standardized, precise manufacturing and assembly can be performed more easily, thus reducing production costs and time.

[0041] A robust roof beam structure is crucial for vehicle safety and comfort. Optimizing the connection between the crossbeam 2 and longitudinal beam 1 on the windshield helps improve the overall structural strength of the vehicle, thus better protecting passenger safety in the event of a collision or other accident. At the same time, a robust roof beam structure also helps reduce vibration and noise during vehicle operation, improving passenger comfort.

[0042] In summary, this preferred embodiment not only improves the connection stability between the upper crossbeam 2 and the longitudinal beam 1 of the windshield, but also helps to improve manufacturing and assembly efficiency, as well as vehicle safety and comfort.

[0043] In a preferred embodiment, see Figure 2 As shown, the rear crossbeam 3 of the roof has a rearwardly recessed second mounting groove 31 in the middle, and the rear mounting part 12, which is adapted to the second mounting groove 31, extends rearward from the rear end of the longitudinal beam 1. Similarly, this arrangement improves the connection stability between the rear crossbeam 3 of the roof and the longitudinal beam 1.

[0044] In a preferred embodiment, the longitudinal beam 1 is a one-piece die-cast aluminum alloy component.

[0045] Aluminum alloys have a much lower density than traditional steel, so using aluminum alloy longitudinal beams can significantly reduce the overall weight of a vehicle. Lightweighting is crucial for improving a vehicle's fuel economy, acceleration performance, and handling.

[0046] Although aluminum alloys have a low density, through proper alloy composition design and heat treatment processes, they can achieve strength comparable to or even higher than that of steel. This means that aluminum alloy longitudinal beams can achieve a lighter weight while ensuring safety. Furthermore, aluminum alloys possess natural corrosion resistance, meaning that aluminum alloy longitudinal beams maintain good durability even in harsh environmental conditions, reducing maintenance and replacement costs.

[0047] One-piece die casting is an advanced manufacturing process that allows molten aluminum alloy to be directly injected into a mold and formed into complex shapes through high pressure and rapid cooling. This technology not only improves production efficiency but also ensures high precision and consistency in the longitudinal beams. Furthermore, one-piece molding reduces the number of welds and connection points, thereby lowering the risk of structural failure.

[0048] By integrating components in a single molding design, strength is ensured while effectively improving component integration, reducing costs and debugging time during product development. Simultaneously, it reduces assembly work on the longitudinal beam 1, significantly improving manufacturing efficiency and lowering production costs. Furthermore, it eliminates the need to consider connections between components, ensuring dimensional stability of the longitudinal beam and avoiding stress concentration at component joints caused by numerous parts.

[0049] Furthermore, both the upper windshield crossbeam 2 and the rear roof crossbeam 3 are integrally cast components. The upper windshield crossbeam 2 has a forward-recessed first mounting groove 21 in its center, and a front mounting portion 11, adapted to the first mounting groove 21, extends forward from the front end of the longitudinal beam 1. The rear roof crossbeam 3 has a rearward-recessed second mounting groove 31 in its center, and a rear mounting portion 12, adapted to the second mounting groove 31, extends rearward from the rear end of the longitudinal beam 1. The front mounting portion 11 and the first mounting groove 21, and the rear mounting portion 12 and the second mounting groove 31, are all bolted together. By overlapping the longitudinal beam 1 with the equally integrally cast upper windshield crossbeam 2 and the rear roof crossbeam 3, the strength of the roof crossbeam is effectively improved. Compared to traditional welded structures, the connection strength is high, and it is less likely to break in the connection area during a collision, thereby improving load transfer and energy absorption, ensuring the safety of occupants during a roof crush.

[0050] Furthermore, the wall thickness of the longitudinal beam 1 is generally set to 3~5mm. Some areas can be adaptively adjusted according to their functional requirements, which helps to achieve the fluidity and accessibility of liquid metal during die casting while ensuring load-bearing rigidity.

[0051] In a preferred embodiment, see Figure 3 and Figure 4 As shown, the longitudinal beam 1 has multiple first reinforcing ribs 14 arranged in a mesh pattern and second reinforcing ribs 15 penetrating the front and rear ends of the longitudinal beam 1 on at least one side.

[0052] Multiple first reinforcing ribs 14 arranged in a mesh pattern are provided on at least one side of the longitudinal beam 1 (which may be the inner or outer side, or even both sides). The first reinforcing ribs 14 improve the bending, torsional, and shear resistance of the longitudinal beam 1 by increasing the local thickness of the material and changing its shape. The mesh pattern ensures that the first reinforcing ribs 14 can uniformly distribute stress, thereby improving the overall strength and stiffness of the longitudinal beam 1.

[0053] The second reinforcing rib 15 is arranged through the front and rear ends of the longitudinal beam 1, providing additional support through a continuous structure, which helps to resist forces and vibrations from different directions.

[0054] Further, see Figure 3 and Figure 4 As shown, the longitudinal beam 1 includes a base plate 16 and side plates 17 extending vertically downward or upward from the front and rear side edges of the base plate 16. The side plates 17 and the base plate 16 together form a cavity, and the first reinforcing rib 14 is arranged in the cavity.

[0055] The substrate 16 serves as the main body of the longitudinal beam, providing the primary load-bearing surface.

[0056] The side plate 17 extends vertically downwards or upwards from the front and rear sides of the base plate 16, forming a cavity with the base plate 16. This arrangement not only increases the moment of inertia of the longitudinal beam 1 and improves its bending resistance, but also provides space for the arrangement of the first reinforcing rib 14, while reducing the overall weight.

[0057] The inclusion of ribs 14 and 15 in the chamber not only strengthens the longitudinal beam 1 but also increases the force transmission area, optimizes the force transmission path, and protects the safety of the crew compartment.

[0058] By adding a first reinforcing rib 14 and a second reinforcing rib 15, this utility model significantly improves the structural strength and stiffness of the longitudinal beam 1, thereby enhancing the stability and safety of the entire top beam structure.

[0059] For example, see Figure 4 As shown, the first reinforcing rib 14 is configured as a point-linked "rhomboid" structural rib, evenly distributed along the front and rear ends of the longitudinal beam. When subjected to impact force or load, the "rhomboid" structural rib, i.e., the first reinforcing rib 14, and the through structural rib, i.e. the second reinforcing rib 15, provide support in both the length and width directions of the longitudinal beam 1, effectively dispersing the load and further enhancing the structural strength of the longitudinal beam 1.

[0060] It should be noted that different local reinforcing rib structures are set according to the different stress characteristics of different areas of the longitudinal beam 1.

[0061] In a preferred embodiment, the gull-wing door mounting portion 13 includes a through hole 131 for avoiding the gull-wing door mounting components and a mounting hole 132 for fixing the hinge 4 of the gull-wing door.

[0062] By setting four through holes 131, the rotation opening of the gull-wing door can be effectively limited, effectively preventing the hinge from interfering with the longitudinal beam 1 during multiple opening and closing processes. At the same time, the weight of the longitudinal beam 1 can be reduced, further meeting the vehicle body's lightweight requirements.

[0063] During the specific installation of the gull-wing door, the hinge 4 is bolted to the longitudinal beam 1 through three mounting holes 132. Since the door hinge is installed on the longitudinal support structure of the roof, it has higher structural strength compared to the conventional case where the door hinge is installed on the side A and B pillars.

[0064] In one embodiment, the present invention provides a roof assembly including the aforementioned gull-wing door vehicle roof beam structure.

[0065] In one embodiment, the present invention provides an automobile including the aforementioned roof assembly.

[0066] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A roof beam structure for a gull-wing door vehicle, characterized in that: It includes a front windshield upper crossbeam (2), a roof rear crossbeam (3) and a longitudinal beam (1) connecting the front windshield upper crossbeam (2) and the roof rear crossbeam (3), wherein the longitudinal beam (1) has gull-wing door mounting parts (13) on the left and right sides of the middle part; The longitudinal beam (1) has a front mounting part (11) that overlaps and is fixed to the upper crossbeam (2) of the windshield, and a rear mounting part (12) that overlaps and is fixed to the rear crossbeam (3) of the roof.

2. The gull-wing door vehicle roof beam structure according to claim 1, characterized in that: The front windshield upper crossbeam (2) has a first mounting groove (21) recessed in the middle, and the front mounting part (11) adapted to the first mounting groove (21) extends forward from the front end of the longitudinal beam (1).

3. The gull-wing door vehicle roof beam structure according to claim 1, characterized in that: The rear crossbeam (3) of the roof is provided with a second mounting groove (31) that is recessed to the rear, and the rear mounting part (12) that is adapted to the second mounting groove (31) extends to the rear end of the longitudinal beam (1).

4. The gull-wing door vehicle roof beam structure according to claim 1, characterized in that: The longitudinal beam (1) is an integral die-cast aluminum alloy component.

5. The gull-wing door vehicle roof beam structure according to claim 1, characterized in that: The longitudinal beam (1) has multiple first reinforcing ribs (14) arranged in a net pattern on at least one side and second reinforcing ribs (15) that run through the front and rear ends of the longitudinal beam.

6. The gull-wing door vehicle roof beam structure according to claim 5, characterized in that: The longitudinal beam (1) includes a base plate (16) and side plates (17) extending vertically downward or upward from the front and rear side edges of the base plate (16). The side plates (17) and the base plate (16) together form a cavity, and the first reinforcing rib (14) is arranged in the cavity.

7. The gull-wing door vehicle roof beam structure according to claim 1, characterized in that: The front windshield upper crossbeam (2) and the roof rear crossbeam (3) are both integrally molded parts.

8. The gull-wing door vehicle roof beam structure according to claim 1, characterized in that: The gull-wing door mounting part (13) includes a through hole (131) for avoiding the gull-wing door mounting components and a mounting hole (132) for fixing the hinge (4) of the gull-wing door.

9. A roof assembly, characterized in that: Includes the gull-wing door vehicle roof beam structure as described in any one of claims 1 to 8.

10. A car, characterized in that: Includes the roof assembly as described in claim 9.

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