A frame cross member assembly structure

Abstract

The utility model discloses a kind of frame crossbeam assembly structure, including crossbeam main body, it includes first surface, second surface and third surface;And, crossbeam connecting plate, including left upper connecting plate, left lower connecting plate, right upper connecting plate and right lower connecting plate, the left upper connecting plate and the right upper connecting plate are respectively arranged at the both ends of the first surface, the left lower connecting plate and the right lower connecting plate are respectively arranged at the both ends of the second surface.The frame crossbeam assembly structure is integrally formed using hot-pressing tank carbon fiber reinforced composite material forming process, crossbeam main body uses variable cross-section design, constitutes a kind of highly integrated and structure simple, excellent lightweight structure.

Description

Technical Field

[0001] This utility model relates to the field of automotive lightweight manufacturing technology, and in particular to a frame crossbeam assembly structure. Background Technology

[0002] In recent years, most existing vehicle frame crossbeam assemblies are made of automotive steel through stamping, bending and riveting. This results in a large number of parts used in the crossbeam assembly, and the automotive steel itself is also relatively heavy, which is not conducive to the overall vehicle lightweighting. The riveting parts are prone to deformation, and the production process is complicated.

[0003] To solve the above problems, a reasonable structure is needed that meets the functional requirements of the crossbeam assembly while also being highly integrated, structurally simple, and lightweight. Utility Model Content

[0004] In view of the problems existing in the existing frame crossbeam assembly structure, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a frame crossbeam assembly structure, which is characterized by high integration, simple structure and lightweight.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a vehicle frame crossbeam assembly structure, comprising,

[0007] The main body of the crossbeam includes a first surface, a second surface, and a third surface; and,

[0008] The crossbeam connecting plate includes an upper left connecting plate, a lower left connecting plate, an upper right connecting plate, and a lower right connecting plate. The upper left connecting plate and the upper right connecting plate are respectively disposed at both ends of the first surface, and the lower left connecting plate and the lower right connecting plate are respectively disposed at both ends of the third surface.

[0009] As a preferred embodiment of the frame crossbeam assembly structure of this utility model, the main body of the crossbeam adopts a variable cross-section design, and its cross-sectional dimensions along the length direction change in a stepped manner.

[0010] As a preferred embodiment of the frame crossbeam assembly structure of this utility model, the crossbeam body and the crossbeam connecting plate are integrally formed.

[0011] As a preferred embodiment of the frame crossbeam assembly structure of this utility model, the crossbeam body, the upper left connecting plate, the lower left connecting plate, the upper right connecting plate and the lower right connecting plate are made of carbon fiber reinforced composite material.

[0012] As a preferred embodiment of the frame crossbeam assembly structure of this utility model, the crossbeam body, the upper left connecting plate, the lower left connecting plate, the upper right connecting plate, and the lower right connecting plate are manufactured using a hot autoclave composite material molding process.

[0013] In a preferred embodiment of the frame crossbeam assembly structure of this utility model, the upper left connecting plate, the lower left connecting plate, the upper right connecting plate, and the lower right connecting plate are bent downwards respectively.

[0014] As a preferred embodiment of the frame crossbeam assembly structure of this utility model, the second surface of the crossbeam body is provided with weight reduction holes.

[0015] As a preferred embodiment of the frame beam assembly structure of this utility model, the weight reduction hole is located in the middle of the second surface, including a first weight reduction hole and a second weight reduction hole.

[0016] As a preferred embodiment of the frame beam assembly structure of this utility model, the second weight reduction hole is provided as two, the first weight reduction hole is provided at the midpoint of the second surface, and the second weight reduction hole is provided on both sides of the first weight reduction hole.

[0017] As a preferred embodiment of the frame crossbeam assembly structure of this utility model, the crossbeam body is provided with multiple bracket wiring harness fixing holes, and the surfaces of the upper left connecting plate, the lower left connecting plate, the upper right connecting plate, and the lower right connecting plate are provided with multiple bolt holes.

[0018] The beneficial effects of this utility model are as follows: The frame crossbeam assembly structure features high integration and a simple structure. The crossbeam body and the connecting plate are integrally formed, eliminating the need for connecting parts (such as bolts, nuts, and washers) and assembly processes required by traditional split structures, significantly simplifying the overall structure. This structure has excellent lightweight effect. The composite material itself has high specific strength and high specific modulus characteristics. Combined with the variable cross-section optimization design, it can achieve a significant weight reduction effect compared to traditional metal crossbeam assemblies while ensuring structural performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of Embodiment 1 is shown;

[0021] Figure 2 A schematic diagram of the structure of Embodiment 2 is shown;

[0022] Figure 3 A schematic diagram of the structure of Embodiment 3 is shown.

[0023] Reference numerals: 1. Main body of the crossbeam; 11. First surface; 12. Second surface; 13. Third surface; 121. Weight reduction hole; 121a. First weight reduction hole; 121b. Second weight reduction hole; 2. Upper left connecting plate; 3. Lower left connecting plate; 4. Upper right connecting plate; 5. Lower right connecting plate; 6. Bracket harness fixing hole; 7. Bolt hole. Detailed Implementation

[0024] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0026] Example 1, referring to Figure 1 This is the first embodiment of the present invention, which provides a vehicle frame crossbeam assembly structure, including,

[0027] The main body of the crossbeam 1 includes a first surface 11, a second surface 12, and a third surface 13; and,

[0028] The crossbeam connecting plate includes an upper left connecting plate 2, a lower left connecting plate 3, an upper right connecting plate 4, and a lower right connecting plate 5. The upper left connecting plate 2 and the upper right connecting plate 4 are respectively located at both ends of the first surface 11, and the lower left connecting plate 3 and the lower right connecting plate 5 are respectively located at both ends of the third surface 13.

[0029] The crossbeam body 1 is the core load-bearing component of the assembly. The first surface 11 is designed as a plane to ensure better load-bearing capacity of the crossbeam, which is a straight beam. The crossbeam connects the crossbeam connecting plates on the left and right sides, forming a frame structure that effectively resists torsional deformation of the frame and prevents diamond-shaped twisting of the frame due to stress on rough roads or when cornering, thus ensuring the overall rigidity and stability of the vehicle body. The crossbeam body 1 provides mounting points and support for other important vehicle components. The longitudinal beams and the crossbeam body 1 are connected by crossbeam connectors, including an upper left connecting plate 2, a lower left connecting plate 3, an upper right connecting plate 4, and a lower right connecting plate 5. These connectors connect the longitudinal beams and the crossbeam body 1 at four points, connecting them through a larger contact surface. This disperses concentrated forces to a larger area, allowing the force flow smoothly into the longitudinal beams, thus avoiding stress concentration and ensuring the durability and reliability of the structure.

[0030] Furthermore, the main body of the crossbeam 1 adopts a variable cross-section design, and its cross-sectional dimensions change in a stepped manner along the length direction.

[0031] The main body of the crossbeam 1 adopts a variable cross-section design, with the cross-sectional dimensions of the main body 1 varying in a stepped manner along its length. This variable cross-section design is the result of dimensional optimization based on the load distribution of the frame under actual working conditions. Its purpose is to increase the cross-sectional dimensions in areas subjected to high loads (such as connecting plates) to improve stiffness and strength, and to decrease the cross-sectional dimensions in areas subjected to relatively low loads to achieve weight reduction, thereby achieving efficient material utilization and optimal matching of structural performance.

[0032] During use, after the frame crossbeam assembly is bolted to the longitudinal beam, when the longitudinal beam of the vehicle body is under stress, the force is transmitted to the connector connected to the currently stressed longitudinal beam. The connector transmits the force to the crossbeam body 1, and the crossbeam body 1 transmits the force to the entire vehicle body, thereby dispersing the force on the longitudinal beam.

[0033] Example 2, refer to Figure 1 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the main body 1 of the crossbeam and the connecting plate of the crossbeam are integrally formed; the main body 1 of the crossbeam, the upper left connecting plate 2, the lower left connecting plate 3, the upper right connecting plate 4, and the lower right connecting plate 5 are formed by autoclave fiber reinforced composite material molding process.

[0034] The main body of the crossbeam 1, the upper left connecting plate 2, the lower left connecting plate 3, the upper right connecting plate 4, and the lower right connecting plate 5 are formed into a complete, seamless single part in one mold, instead of being manufactured separately and then assembled by mechanical connection or adhesive bonding. There are no secondary mechanical connections or adhesive bonding in the form of bolts, rivets, adhesives, etc. between the main body of the crossbeam 1 and each connecting plate, thus forming a complete single composite material component.

[0035] The main beam 1 and all connecting plates are made of carbon fiber cloth or glass fiber cloth as reinforcement, impregnated with resin. The prepreg blanks are placed into a mold, and then the entire mold is placed in a sealed container (autoclave) that can provide high temperature and high pressure at the same time for curing. In this process, the resin in the prepreg is fully melted, flowed and thoroughly cured. On the one hand, each layer of prepreg is compacted, air and volatiles between layers are expelled, and porosity is greatly reduced. On the other hand, the parts are tightly attached to the mold to ensure their shape and dimensional accuracy, producing a structure with extremely high fiber content, extreme material density and excellent mechanical properties.

[0036] The remaining structure is the same as that in Example 1.

[0037] During use, carbon fiber cloth or glass fiber cloth is used as reinforcement. After being impregnated with resin, the prepreg blank is placed into a mold. Then, the entire mold is placed in an autoclave that can provide both high temperature and high pressure to cure, thus creating an integrally molded frame crossbeam assembly structure. After the frame crossbeam assembly structure is bolted to the longitudinal beams, when the longitudinal beams of the vehicle body are under stress, the force is transmitted to the connector connected to the currently stressed longitudinal beam. The connector transmits the force to the crossbeam body 1, and the crossbeam body 1 transmits the force to the entire vehicle body, thereby dispersing the force on the longitudinal beams.

[0038] Example 3, referring to Figure 2 , Figure 3 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: a weight-reducing hole 121 is provided on the second surface 12 of the crossbeam body 1; the weight-reducing hole 121 is located in the middle of the second surface 12, including a first weight-reducing hole 121a and a second weight-reducing hole 121b; there are two second weight-reducing holes 121b, the first weight-reducing hole 121a is located at the midpoint of the second surface 12, and the second weight-reducing holes 121b are located on both sides of the first weight-reducing hole 121a.

[0039] The middle part of the main body 1 of the crossbeam experiences the least stress. Creating weight-reducing holes 121 in this area of ​​minimum stress significantly reduces the impact on the main body 1 of the crossbeam, further achieving a lightweight effect. The weight-reducing holes 121 reduce the weight of the parts. Multiple holes remove material more evenly than a single large hole, achieving higher weight-reduction efficiency.

[0040] Compared to embodiment 2, the crossbeam body 1 is further provided with multiple bracket wire harness fixing holes 6, and the upper left connecting plate 2, lower left connecting plate 3, upper right connecting plate 4, and lower right connecting plate 5 are provided with multiple bolt holes 7.

[0041] In the initial design phase, the routing and fixing points of all wiring harnesses and conduits were planned. These holes were precisely calculated by the general layout department to ensure no interference with surrounding components and optimal length, eliminating the need to design and install a dedicated metal bracket for each wiring harness clip, each conduit section, or each sensor. These fixing holes can be used directly as mounting points or combined with a simple plastic clip for quick installation. On the assembly line, workers can assemble according to a predetermined path, greatly improving production efficiency and assembly consistency. Bolt holes are provided on the surfaces of the upper left connecting plate 2, lower left connecting plate 3, upper right connecting plate 4, and lower right connecting plate 5 to stably connect the longitudinal beams and the frame crossbeam assembly structure.

[0042] The remaining structure is the same as that in Example 2.

[0043] During use, carbon fiber cloth or glass fiber cloth is used as reinforcement. After being impregnated with resin, the prepreg blank is placed into a mold. The entire mold is then placed in an autoclave that can provide both high temperature and high pressure to cure, thus creating an integrally molded frame crossbeam assembly structure. After the frame crossbeam assembly structure is bolted to the longitudinal beam, brackets and clips are set according to the application. The wire harness is carefully pressed into the wire harness slot of the bracket or clip. When the longitudinal beam of the vehicle body is under stress, the force is transmitted to the connector connected to the currently stressed longitudinal beam. The connector transmits the force to the crossbeam body 1, and the crossbeam body 1 transmits the force to the entire vehicle body, thereby dispersing the force on the longitudinal beam.

[0044] The frame crossbeam assembly structure provided by this utility model, through the variable cross-section design of the crossbeam body 1, increases the cross-sectional size in areas bearing high loads (such as the connecting plate location) to improve stiffness and strength, and decreases the cross-sectional size in areas bearing relatively low loads to achieve lightweighting, thereby achieving efficient material utilization and optimal matching of structural performance. The crossbeam body 1 and the connecting plate are integrally formed, eliminating the need for connecting parts (such as bolts, nuts, and washers) and assembly processes required by traditional split structures, significantly simplifying the overall structure. The composite material itself has the characteristics of high specific strength and high specific modulus. Combined with the variable cross-section optimization design, a significant weight reduction effect compared to traditional metal crossbeam assemblies can be achieved while ensuring structural performance.

[0045] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0046] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to the implementation of the present invention) may be omitted.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A frame crossbeam assembly structure, characterized in that: include, The main body of the beam (1) includes a first surface (11), a second surface (12), and a third surface (13); and, The crossbeam connecting plate includes an upper left connecting plate (2), a lower left connecting plate (3), an upper right connecting plate (4), and a lower right connecting plate (5). The upper left connecting plate (2) and the upper right connecting plate (4) are respectively disposed at both ends of the first surface (11), and the lower left connecting plate (3) and the lower right connecting plate (5) are respectively disposed at both ends of the third surface (13). The crossbeam body (1) and the crossbeam connecting plate are integrally formed.

2. The frame crossbeam assembly structure according to claim 1, characterized in that: The main body of the crossbeam (1) adopts a variable cross-section design, and its cross-sectional dimensions along the length direction change in a stepped manner.

3. The frame crossbeam assembly structure according to claim 1, characterized in that: The main body of the crossbeam (1), the upper left connecting plate (2), the lower left connecting plate (3), the upper right connecting plate (4), and the lower right connecting plate (5) are made of carbon fiber reinforced composite material.

4. The frame crossbeam assembly structure according to claim 3, characterized in that: The main body of the crossbeam (1), the upper left connecting plate (2), the lower left connecting plate (3), the upper right connecting plate (4), and the lower right connecting plate (5) are made using a hot autoclave composite material molding process.

5. The frame crossbeam assembly structure according to claim 4, characterized in that: The upper left connecting plate (2), the lower left connecting plate (3), the upper right connecting plate (4), and the lower right connecting plate (5) are bent downwards respectively.

6. The frame crossbeam assembly structure according to claim 1, characterized in that: The second surface (12) of the main body of the beam is provided with weight reduction holes (121).

7. The frame crossbeam assembly structure according to claim 6, characterized in that: The weight-reducing hole (121) is disposed in the middle of the second surface (12), including a first weight-reducing hole (121a) and a second weight-reducing hole (121b).

8. The frame crossbeam assembly structure according to claim 7, characterized in that: The second weight reduction hole (121b) is provided in two parts. The first weight reduction hole (121a) is located at the midpoint of the second surface (12), and the second weight reduction hole (121b) is located on both sides of the first weight reduction hole (121a).

9. The frame crossbeam assembly structure according to claim 5, characterized in that: The main body of the crossbeam (1) is provided with multiple bracket wire harness fixing holes (6), and the surfaces of the upper left connecting plate (2), the lower left connecting plate (3), the upper right connecting plate (4), and the lower right connecting plate (5) are provided with multiple bolt holes (7).

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