Multi-material composite beam-shaped structure and vehicle
By using the interlayer connection between non-metal composite materials and metal materials in the car body beam structure, the problems of lightweight, integration and corrosion resistance are solved, and the lightweight, integration and corrosion resistance of the car body are achieved, reducing production costs and energy consumption.
Patent Information
- Application Number
- CN202422831726.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-11-20
AI Technical Summary
The existing automobile body beam structure has problems such as poor lightweighting effect, low integration effect, low production efficiency and poor corrosion resistance. There are challenges in combining traditional metal materials with composite materials.
The middle part of the beam body made of non-metal composite material is reinforced with the end part of the beam body side made of metal material through pre-opening and filled with non-metal composite material to form a sandwich structure, combining with the traditional metal welding process.
It achieves reduction in body weight and cost, improves performance, improves production efficiency and corrosion resistance, and extends the life cycle of parts and vehicles.
Smart Images
Figure CN223237758U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobiles, in particular to a beam-shaped structure in a multi-material composite form and a vehicle. Background Art
[0002] In the automobile body structure, beam-shaped structural parts have always accounted for the majority in terms of number. Beam structures usually have high bending and crush resistance, which makes an important contribution to the safety and strength indicators of the vehicle body. Traditional vehicle bodies are currently mostly in the form of steel stampings. Due to the characteristics of the material itself, they have always been subject to great constraints in terms of lightweighting. Although composite materials have achieved the effect of weight reduction to a certain extent, there are certain challenges in connection process and production line compatibility. How to combine composite materials with traditional metal materials and give full play to the advantages of each material to overcome the defects of vehicle body beam structures such as poor lightweight effect, low integration effect, low production efficiency, and poor corrosion resistance is an urgent problem that needs to be solved in this field.
[0003] In summary, in response to the problems existing in the above-mentioned prior art, the field urgently needs a multi-material composite beam structure that can combine traditional metal materials with composite materials to achieve reduced vehicle body weight and cost and improved performance. Utility Model Content
[0004] In view of this, the purpose of the embodiments of the present invention is to provide a multi-material composite beam structure and vehicle that can address the problems of poor lightweighting, low integration, low production efficiency, and poor corrosion resistance that exist in existing metal beam structures for vehicle bodies. Thanks to the high specific strength, flexible processing, and excellent corrosion resistance of composite materials, they are combined with traditional vehicle body beams to create a multi-material composite beam structure, thereby improving the aforementioned shortcomings of traditional steel beam structures, reducing vehicle weight and costs, improving performance, and ultimately achieving better vehicle performance and economic benefits.
[0005] Based on the above objectives, one aspect of an embodiment of the present invention provides a beam-shaped structure in a multi-material composite form, comprising:
[0006] A middle portion of the beam body made of a non-metallic composite material is located in the middle section of the beam structure, and each end of the beam body has a first joint; and
[0007] The side end portions of the beam body made of metal material are located at each end of the beam-shaped structure. One end of each side end portion of the beam body has a second joint, and each second joint has a pre-opened hole.
[0008] Among them, each second joint is respectively embedded in the corresponding first joint, and the pre-opening is filled with the non-metallic composite material, so that each side end of the beam body is reinforced and connected to the middle part of the beam body through the pre-opening and the non-metallic composite material filled therein.
[0009] In the above-mentioned beam-shaped structure in the form of a multi-material composite, preferably, the length of each second joint buried in the corresponding first joint is ≥15 mm.
[0010] In the above-mentioned beam-shaped structure in the form of a multi-material composite, preferably, a beam embedded part is provided in the middle of the beam body, and the beam embedded part is covered by the non-metallic composite material or attached to the surface of the non-metallic composite material.
[0011] Based on the above objectives, another aspect of an embodiment of the present invention provides a vehicle, comprising the beam-shaped structure in the form of a multi-material composite as described in any one of the above items.
[0012] Beneficial effects
[0013] The multi-material composite beam structure and vehicle provided by this utility model achieve the effect of combining and rationally applying multiple materials, leveraging the advantages of composite materials to overcome the shortcomings of all-metal beam structures. While retaining the original metal ends on both sides of the beam, it is compatible with the original metal welding process while also ensuring that the vehicle body frame on which the beam is mounted maintains stable rigidity characteristics. In terms of lightweighting, the use of composite materials can achieve significant lightweighting benefits due to their higher specific strength. This reduced weight means more favorable vehicle energy consumption and a lower impact on the environment. In terms of integration, the diverse processing technologies available for composite materials allow for more flexible beam structural design and a higher degree of integration. This integrated design can significantly reduce the number of components, thereby reducing production time, steps, and site requirements, ultimately optimizing costs and processes. In terms of corrosion resistance, composite materials offer greater advantages over conventional steel solutions. Their rational material distribution can address corrosion issues and significantly extend the lifecycle of components and even vehicles. In summary, the multi-material composite beam structure and vehicle achieve multiple benefits such as lightweight, integration, and corrosion resistance, providing strong support for reducing vehicle costs, shortening production cycles, reducing energy consumption, and improving environmental protection levels. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A schematic perspective view of a beam-shaped structure in a multi-material composite form according to an embodiment of the present invention;
[0015] Figure 2 for Figure 1 AA cross-sectional view of a beam structure in a multi-material composite form;
[0016] Figure 3 for Figure 1 BB cross-sectional view of a beam structure in a multi-material composite form; and
[0017] Figure 4 Schematic diagram of the pre-opening of the joint of a beam-shaped structure in the form of a multi-material composite. DETAILED DESCRIPTION
[0018] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
[0019] It should be noted that all expressions such as "first" and "second" in the embodiments of the present invention are used to distinguish multiple non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.
[0020] Based on the above objectives, an embodiment of the present invention provides an embodiment of a beam-shaped structure in a multi-material composite form. Figure 1 FIG. 4 is a schematic perspective view of the beam-shaped structure in the multi-material composite form of this embodiment. Figure 2 for Figure 1 AA cross-sectional view of a beam structure in a multi-material composite form. Figure 1 and Figure 2As shown in , the multi-material composite beam structure 100 mainly includes a beam middle portion 101 and beam side ends 102, 103, 104, and 105. The beam middle portion 101 is made of a non-metallic composite material, and its application range includes but is not limited to glass fiber thermoplastic / solid composite materials, basalt fiber thermoplastic / solid composite materials, carbon fiber thermoplastic / solid composite materials, etc. The beam middle portion 101 is located in the middle section of the beam structure 100, and each end thereof has a first joint. The beam side ends 102, 103, 104, and 105 are made of a metal material, and the material can be steel, aluminum alloy, magnesium alloy, titanium alloy, etc. The beam side ends 102, 103, 104, and 105 are located at each end of the beam structure 100, and one end of each beam side end has a second joint, and each second joint has a pre-opened hole. Each second joint is embedded in a corresponding first joint, and the pre-openings are filled with the non-metallic composite material, so that each side end of the beam body is reinforced and connected to the middle portion of the beam body through the pre-openings and the non-metallic composite material filled therein. In other words, the joints connecting the side ends of the beam body 102, 103, 104, and 105 with the middle portion of the beam body 101 adopt a sandwich structure, with the joints of the middle portion of the beam body 101 located on the two outer layers of the sandwich, and the joints of the side ends of the beam body 102, 103, 104, and 105 located in the middle layer of the sandwich. The second joints are joined by injection molding or compression molding in an integrated mold of the middle portion of the beam body 101.
[0021] Preferably, the number of the first joints and the second joints is ≥1, and they may be irregular in shape.
[0022] Preferably, the middle portion 101 of the beam body may be a non-uniform thickness structure; the side ends 102 , 103 , 104 , 105 of the beam body may also be non-uniform thickness structures, including tailor welded blanks (TWBs), differential thickness blanks (TRBs), etc.
[0023] Preferably, the length L1 of each second joint buried in the corresponding first joint is ≥15 mm.
[0024] like Figure 3 As shown in FIG, based on the above embodiment, the beam body middle portion 101 is provided with a beam body embedded part 106. The beam body embedded part 106 is covered by the non-metallic composite material of the beam body middle portion 101 or attached to the surface of the non-metallic composite material. The beam body embedded part 106 can be made of a metal material, and the material can be steel, aluminum alloy, magnesium alloy, titanium alloy, etc.
[0025] Based on the above embodiment, additional mechanical connections, such as riveting or screwing, may be added to further secure the joint connection. Specifically, a pre-opening is provided on each second joint. During the injection molding or compression molding process of the beam body middle portion 101, the non-metallic composite material is also filled into the pre-opening. Through the pre-opening and the non-metallic composite material filled therein, each beam body side end is further connected to the beam body middle portion. Figure 4 Four examples of pre-openings of the connector are shown. Optionally, the shape of the pre-openings can be a circular hole, an oblong hole, a polygonal hole, etc. The number of pre-openings is ≥1. The shape, number, arrangement and direction of the pre-openings include but are not limited to the forms shown in the figure, and the forms of the pre-openings can be combined.
[0026] The multi-material composite beam structure of the above embodiment combines composite materials with steel. While the main body of the component is made of composite material, the side ends of the component retain their steel stamping form, effectively joining the main body and the side ends. This structure not only innovates the joining of dissimilar materials within the component itself, effectively ensuring that the part meets its intended operating conditions, but also solves the problem of joint connection during vehicle body assembly. It also achieves lightweighting, improves corrosion resistance, and increases production efficiency.
[0027] To achieve the above objectives, the present invention further provides a vehicle comprising the multi-material composite beam structure described in any of the above embodiments. The beam structure may include the vehicle's front floor frame structure, B-pillar structure, roof front crossbeam, seat crossbeam, or engine compartment front crossbeam.
[0028] In summary, the multi-material composite beam structure and vehicle provided by the present invention achieve the effect of combining and rationally applying multiple materials, leveraging the advantages of composite materials to overcome the shortcomings of all-metal beam structures. By retaining the original metal ends on both sides of the beam, it is compatible with the original metal welding process while also ensuring that the vehicle body frame on which the beam is located maintains stable rigidity. In terms of lightweighting, the use of composite materials can achieve significant lightweighting benefits due to their higher specific strength. This reduced weight means more favorable vehicle energy consumption and a lower impact on the environment. In terms of integration, the diverse processing technologies available for composite materials allow for more flexible beam structural design and a higher degree of integration. This integrated design can significantly reduce the number of components, thereby reducing production time, steps, and space required, ultimately optimizing costs and processes. In terms of corrosion resistance, composite materials offer significant advantages over conventional steel solutions. Their rational material distribution can address corrosion issues and significantly extend the lifecycle of components and even vehicles. It can be seen that the multi-material composite beam structure and vehicle have achieved multiple benefits such as lightweight, integration, and corrosion resistance, providing strong support for reducing vehicle costs, shortening production cycles, reducing energy consumption, and improving environmental protection levels.
[0029] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.
Claims
1. A beam-shaped structure in a multi-material composite form, characterized in that: include: The middle portion of the beam body is made of a non-metallic composite material and is located in the middle section of the beam structure, and each end of the beam body has a first joint; and The side end portions of the beam body made of metal material are located at each end of the beam-shaped structure. One end of each side end portion of the beam body has a second joint, and each second joint has a pre-opened hole. Among them, each second joint is respectively embedded in the corresponding first joint, and the pre-opening is filled with the non-metallic composite material, so that each side end of the beam body is reinforced and connected to the middle part of the beam body through the pre-opening and the non-metallic composite material filled therein.
2. The beam-shaped structure of multi-material composite form according to claim 1, characterized in that: The length of each second joint buried in the corresponding first joint is ≥15 mm.
3. The beam-shaped structure of multi-material composite form according to claim 1, characterized in that: A beam embedded part is provided in the middle of the beam body, and the beam embedded part is covered by the non-metallic composite material or attached to the surface of the non-metallic composite material.
4. A vehicle, characterized in that: A beam-shaped structure comprising the multi-material composite form according to any one of claims 1 to 3.