Front floor longitudinal beam structure and automobile

Abstract

The invention relates to the technical field of automobile structures, in particular to a front floor longitudinal beam structure and an automobile, and the front floor longitudinal beam structure comprises a connecting section, a first connecting plate and a second connecting plate; the first connecting plate and the second connecting plate are arranged in the same direction, and the first connecting plate and the second connecting plate are arranged in a spaced and staggered mode. The connecting section is obliquely arranged between the first connecting plate and the second connecting plate, and the two ends of the connecting section are connected with the first connecting plate and the second connecting plate correspondingly. A plurality of first cavities are formed in the first connecting plate and are arranged adjacently; a plurality of second cavities are formed in the second connecting plate and are arranged adjacently; and a plurality of third cavities are formed in the connecting section, and the plurality of third cavities are adjacently arranged. According to the technical scheme, assembly in automobile bodies of different specifications and types can be achieved, the assembly requirement can be met conveniently, the lightweight requirement of the automobile bodies can be met, and the rigid strength and collision safety are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile structures, and in particular relates to a front floor longitudinal beam structure and an automobile. Background Art

[0002] The front floor longitudinal beam is a key load-bearing component in the automobile body structure. It is arranged along the longitudinal direction of the automobile body and is mainly used to support the front floor, install related components, transfer loads and improve the overall rigidity and collision safety of the automobile body.

[0003] Existing front floor rails typically utilize a stamped and welded steel structure to support the front floor, mount related components, transfer loads, and enhance the overall rigidity and crash safety of the vehicle body. However, this structure results in a relatively heavy overall weight of the formed front floor rail, making it difficult to meet the lightweighting requirements of the vehicle body. Furthermore, the overall design of this structure is relatively fixed. As the overall volume of the vehicle body increases or decreases, the overall volume of the front floor rail must also increase or decrease accordingly, and even the front floor rail may need to be redesigned to meet assembly requirements. Furthermore, with the development of the automotive industry, the specifications and types of vehicle structures are increasingly diverse. Relying solely on a single type of front floor rail makes it difficult to assemble it in vehicles of varying specifications and types, resulting in high production costs and a loss of market competitiveness. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes a front floor longitudinal beam structure, comprising: a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are arranged in the same direction, and the first connecting plate and the second connecting plate are spaced and staggered with each other; a connecting section, which is obliquely arranged between the first connecting plate and the second connecting plate, and whose two ends are respectively connected to the first connecting plate and the second connecting plate; A plurality of first cavities are defined in the first connecting plate, and the plurality of first cavities are arranged adjacent to each other in sequence; A plurality of second cavities are defined in the second connecting plate, and the plurality of second cavities are arranged adjacent to each other in sequence; A plurality of third cavities are provided in the connecting section, and the plurality of third cavities are arranged adjacent to each other in sequence.

[0005] In some specific embodiments, there are multiple connecting segments, and the multiple connecting segments are evenly arranged along the length direction of the first connecting plate and the second connecting plate; And every two adjacent connecting sections are spaced apart from each other.

[0006] In some specific embodiments, the first cavity, the second cavity and the third cavity are all opened along the length direction of the first connecting plate and the second connecting plate.

[0007] In some specific embodiments, a plurality of first reinforcing ribs are provided in the first connecting plate, and the plurality of first reinforcing ribs and the inner wall of the first connecting plate together form a plurality of first cavities; A plurality of second reinforcing ribs are provided in the second connecting plate, and the plurality of second reinforcing ribs and the inner wall of the second connecting plate together form a plurality of second cavities; A plurality of third reinforcing ribs are provided in the connecting section, and the plurality of third reinforcing ribs and the inner wall of the connecting section together form a plurality of third cavities.

[0008] In some specific embodiments, the plurality of third reinforcing ribs are arranged obliquely, so that each of the third cavities forms a triangular structure.

[0009] In some specific embodiments, the first connecting plate is provided with a plurality of first connecting points for connecting external components; The second connecting plate is provided with a plurality of second connecting points for connecting external components.

[0010] In some specific embodiments, a pad is provided on the second connecting plate; At least one of the second connection points is disposed on a side of the pad away from the second connection plate.

[0011] In some specific embodiments, the first connection point includes: a first bolt hole, wherein a plurality of the first bolt holes are arranged along the length direction of the first connecting plate; A first positioning pin is provided with at least one; The second connection point includes: a plurality of second bolt holes, the plurality of second bolt holes being arranged along the length direction of the second connecting plate; A second positioning pin is provided with at least one; The positioning end of the first positioning pin and the positioning end of the second positioning pin are oriented in opposite directions.

[0012] In some specific embodiments, the openings of a portion of the first bolt holes are arranged toward the upper side of the first connecting plate, and the openings of another portion of the first bolt holes are arranged toward the lower side of the first connecting plate; The openings of a portion of the second bolt holes are arranged toward the upper side of the second connecting plate, and the openings of another portion of the second bolt holes are arranged toward the lower side of the second connecting plate.

[0013] An automobile based on the same concept includes: the front floor longitudinal beam structure as described in any of the above specific embodiments.

[0014] Compared to the prior art, the front floor rail structure of the present invention has at least the following advantages: the first and second connecting plates are spaced and staggered, preventing interference between them. Each plate can be individually increased or decreased in volume during molding to meet specific vehicle body assembly requirements, avoiding the need for overall volume increase or decrease or even complete redesign and layout. Furthermore, by extending the length of the connecting section, the relative position between the first and second connecting plates can be directly adjusted, enabling assembly in vehicles of varying specifications and types, facilitating assembly requirements. Furthermore, the first, second, and third cavities are each defined in the first, second, and third connecting plates to reduce weight, respectively, thereby meeting vehicle body lightweighting requirements. Furthermore, the plurality of first, second, and third cavities are adjacently positioned, forming a reinforcing rib structure between each pair of adjacent first, second, and third cavities, ensuring rigidity and collision safety.

[0015] Since the automobile of the present invention includes the above-mentioned front floor longitudinal beam structure, it has the same beneficial effects as the above-mentioned front floor longitudinal beam structure, and therefore, it is not described in detail here.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a front floor longitudinal beam structure in an embodiment of the present invention is shown; Figure 2 A schematic top view of a front floor longitudinal beam structure according to an embodiment of the present invention is shown; Figure 3 for Figure 2 Schematic side view of Figure 4 shows a transverse cross-sectional view of a first connecting plate in an embodiment of the present invention; Figure 5 shows a transverse cross-sectional view of a second connecting plate in an embodiment of the present invention; Figure 6 It shows a schematic diagram of the assembly of the front floor longitudinal beam structure in an embodiment of the present invention; Figure 7 A partial schematic diagram of the assembly of the front floor longitudinal beam structure in an embodiment of the present invention is shown.

[0019] In the figure, 100, first connecting plate; 110, first reinforcing rib; 120, first connecting point; 121, first bolt hole; 122, first positioning pin; 200, second connecting plate; 210, second reinforcing rib; 220, second connecting point; 221, second bolt hole; 222, second positioning pin; 230, pad; 300, connecting section; 310, third reinforcing rib; 400, door sill assembly; 500, front floor body; 600, battery pack; 700, battery side wall heat insulation plate; 800, rear floor body; 900, wiring harness mounting bracket. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] Reference Figure 1 An embodiment of the present invention provides a front floor longitudinal beam structure, comprising: a connecting section 300, a first connecting plate 100, and a second connecting plate 200. The first connecting plate 100 and the second connecting plate 200 are arranged in the same direction, and the first connecting plate 100 and the second connecting plate 200 are spaced and staggered. The connecting section 300 is arranged obliquely between the first connecting plate 100 and the second connecting plate 200, and the two ends of the connecting section 300 are respectively connected to the first connecting plate 100 and the second connecting plate 200. A plurality of first cavities are adjacently opened in the first connecting plate 100. A plurality of second cavities are adjacently opened in the second connecting plate 200. A plurality of third cavities are adjacently opened in the connecting section 300.

[0022] Specifically, the first connecting plate 100 and the second connecting plate 200 are arranged parallel to each other with a gap therebetween, and the first connecting plate 100 and the second connecting plate 200 are at different heights, thereby staggering the first connecting plate 100 and the second connecting plate 200. The connecting section 300 is arranged obliquely between the first connecting plate 100 and the second connecting plate 200, with both ends of the connecting section 300 respectively connected to the sides of the first connecting plate 100 and the second connecting plate 200, thereby achieving mutual symmetry between the first connecting plate 100 and the second connecting plate 200. Among them, the first connecting plate 100 is used to connect with the door sill assembly 400 and the battery side insulation plate 700 of the automobile body, and the second connecting plate 200 is used to connect with the front floor body 500 and the battery pack 600 of the automobile body, so that the integrated connection between components such as the door sill assembly 400, the front floor body 500, the battery pack 600 and the battery side insulation plate 700 can be achieved through the front floor longitudinal beam structure, thereby greatly reducing the difficulty of installing components, improving the production efficiency of the automobile, and optimizing the spatial structure layout of the automobile body, making the structure of the automobile body more compact and efficient.

[0023] At the same time, because the first connecting plate 100 and the second connecting plate 200 are spaced apart and staggered, the first connecting plate 100 and the second connecting plate 200 will not interfere with each other. The first connecting plate 100 and the second connecting plate 200 can each increase or decrease in volume independently according to the specific assembly requirements of the automobile body during molding, so as to avoid the situation where the overall volume of the front floor longitudinal beam structure needs to be increased or decreased or even redesigned and laid out. Moreover, because the connecting section 300 is obliquely arranged between the first connecting plate 100 and the second connecting plate 200, the length of the connecting section 300 can be extended or shortened according to specific assembly requirements, so as to adjust the left and right spacing and the upper and lower height difference between the first connecting plate 100 and the second connecting plate 200, that is, the relative position between the first connecting plate 100 and the second connecting plate 200 can be directly adjusted, so that the front floor longitudinal beam structure can be assembled in automobile bodies of different specifications and types, so as to meet assembly requirements.

[0024] At the same time, the first connecting plate 100 is provided with multiple first cavities, forming an internal hollow structure, thereby reducing the weight of the first connecting plate 100. The second connecting plate 200 is provided with multiple second cavities, forming an internal hollow structure, thereby reducing the weight of the second connecting plate 200. The connecting section 300 is provided with multiple third cavities, forming an internal hollow structure, thereby reducing the weight of the connecting section 300. Furthermore, because the multiple first cavities are arranged adjacent to each other, a reinforcing rib structure can be formed between each adjacent first cavities to ensure the rigidity and collision safety of the first connecting plate 100. Because the multiple second cavities are arranged adjacent to each other, a reinforcing rib structure can be formed between each adjacent second cavities to ensure the rigidity and collision safety of the second connecting plate 200. Because the multiple third cavities are arranged adjacent to each other, a reinforcing rib structure can be formed between each adjacent third cavities to ensure the rigidity and collision safety of the connecting section 300.

[0025] It should be noted that, by providing the first cavity, the second cavity and the third cavity, the overall weight can be reduced by approximately 45% while ensuring the same strength, thereby reducing the amount of material used during manufacturing.

[0026] In some specific embodiments of the present invention, referring to Figure 1 There are multiple connecting sections 300, and the multiple connecting sections 300 are evenly arranged along the length direction of the first connecting plate 100 and the second connecting plate 200. And every two adjacent connecting sections 300 are spaced apart from each other.

[0027] Specifically, the connecting segment 300 is elongated, with one end connected to the side of the first connecting plate 100 and the other end connected to the side of the second connecting plate 200. Multiple connecting segments 300 are provided, evenly spaced along the length of the first and second connecting plates 100, 200. This ensures a gap between each pair of adjacent connecting segments 300, creating a hollow structure between each pair. While ensuring stability through the provision of multiple connecting segments 300, the gaps between each pair of adjacent connecting segments 300 further reduce the weight of the front floor rail structure, thereby achieving lightweighting requirements.

[0028] In some specific embodiments of the present invention, referring to Figure 1 The first cavity, the second cavity and the third cavity are all opened along the length direction of the first connecting plate 100 and the second connecting plate 200.

[0029] Specifically, both open ends of each first cavity extend along the length of the first connecting plate 100, both open ends of each second cavity extend along the length of the second connecting plate 200, and both open ends of each third cavity extend along the length of the horizontally arranged first and second connecting plates 100, 200. This ensures high torsional rigidity of the front floor rail structure.

[0030] In some specific embodiments of the present invention, referring to Figure 3 The first connecting plate 100 is provided with a plurality of first reinforcing ribs 110. The plurality of first reinforcing ribs 110 and the inner wall of the first connecting plate 100 together form a plurality of first cavities. The second connecting plate 200 is provided with a plurality of second reinforcing ribs 210. The plurality of second reinforcing ribs 210 and the inner wall of the second connecting plate 200 together form a plurality of second cavities. The connecting section 300 is provided with a plurality of third reinforcing ribs 310. The plurality of third reinforcing ribs 310 and the inner wall of the connecting section 300 together form a plurality of third cavities.

[0031] Specifically, multiple first reinforcing ribs 110 are disposed within the first connecting plate 100, with both ends of each first reinforcing rib 110 extending along the length of the first connecting plate 100. Thus, multiple first cavities are formed within the first connecting plate 100 by the multiple first reinforcing ribs 110. The provision of the first reinforcing ribs 110 ensures the rigidity of the first connecting plate 100 while reducing its weight. Multiple second reinforcing ribs 210 are disposed within the second connecting plate 200, with both ends of each second reinforcing rib 210 extending along the length of the second connecting plate 200. Thus, multiple second cavities are formed within the second connecting plate 200 by the multiple second reinforcing ribs 210. The provision of the second reinforcing ribs 210 ensures the rigidity of the second connecting plate 200 while reducing its weight. Each connecting segment 300 is provided with multiple third reinforcing ribs 310. Both ends of the multiple third reinforcing ribs 310 within any connecting segment 300 extend along the length of the first connecting plate 100 and the second connecting plate 200. Consequently, the multiple third reinforcing ribs 310 form multiple third cavities within the corresponding connecting segment 300. The provision of the third reinforcing ribs 310 ensures the rigidity of the connecting segment 300 while reducing its weight. In the event of an impact, the impact force is dispersed through the first reinforcing ribs 110, the second reinforcing ribs 210, and the third reinforcing ribs 310, thereby improving the impact resistance of the front floor rail structure and effectively reducing the risk of local buckling failure, thereby ensuring the reliability and durability of the front floor rail structure.

[0032] In some specific embodiments of the present invention, referring to Figure 3, multiple third reinforcing ribs 310 are all arranged at an angle, so that each third cavity forms a triangular structure.

[0033] Specifically, the multiple third reinforcing ribs 310 within any connecting section 300 are arranged at an angle relative to the connecting section 300, so that each third cavity formed by the multiple third reinforcing ribs 310 has a triangular grid structure. Due to the stability principle of the triangle, the load on the front floor longitudinal beam structure can be evenly distributed. When impacted, the impact force can be dispersed more evenly, thereby further improving the impact resistance of the front floor longitudinal beam structure. In addition, the risk of local buckling failure can be further effectively reduced, thereby ensuring the reliability and durability of the front floor longitudinal beam structure.

[0034] In some specific embodiments of the present invention, referring to Figure 2 The first connection plate 100 is provided with a plurality of first connection points 120 for connecting external components. The second connection plate 200 is provided with a plurality of second connection points 220 for connecting external components.

[0035] Specifically, multiple first connection points 120 are arranged along the length of the first connecting plate 100, and the first connecting plate 100 is connected to the vehicle's rocker assembly 400 and battery side insulation panel 700 via these multiple first connection points 120. Multiple second connection points 220 are arranged along the length of the second connecting plate 200, and the second connecting plate 200 is connected to the vehicle's front floor body 500 and battery pack 600 via these multiple second connection points 220. This front floor longitudinal beam structure enables integrated connection between components such as the rocker assembly 400, front floor body 500, battery pack 600, and battery side insulation panel 700, greatly reducing the difficulty of component installation, improving vehicle production efficiency, and optimizing the vehicle's spatial structural layout, making the vehicle's structure more compact and efficient.

[0036] In some specific embodiments of the present invention, referring to Figure 4 and Figure 5 The first connection point 120 includes a first bolt hole 121 and a first locating pin 122. There are multiple first bolt holes 121, which are arranged along the length of the first connecting plate 100. There is at least one first locating pin 122. The second connection point 220 includes a second bolt hole 221 and a second locating pin 222. There are multiple second bolt holes 221, which are arranged along the length of the second connecting plate 200. There is at least one second locating pin 222. The locating ends of the first locating pin 122 and the locating ends of the second locating pin 222 face opposite directions.

[0037] Specifically, refer to Figure 4 and Figure 6 The four first bolt holes 121 are arranged along the length of the first connecting plate 100. The first connecting plate 100 is connected to the door sill assembly 400 by bolt and nut fastening through the four first bolt holes 121 to ensure connection stability. At least one first locating pin 122 is set on one side of the first connecting plate 100. The first connecting plate 100 is connected to the door sill assembly 400 by pinning through the at least one first locating pin 122 to ensure connection accuracy. Figure 5 and Figure 6 , five second bolt holes 221 are arranged along the length direction of the second connecting plate 200, and the second connecting plate 200 is connected to the front floor body 500 and the battery pack 600 by bolt and nut fastening through the five second bolt holes 221 to ensure the stability of the connection. At least two second locating pins 222 are connected to the front floor body 500 and the battery pack 600 respectively by pin connection to ensure the accuracy of the connection. Precise alignment is achieved through the above structure, which improves the assembly accuracy and stability and effectively reduces the risk of structural deformation caused by assembly errors. Among them, the connection method of the mutual coordination of the bolt holes and the locating pins can not only improve the assembly accuracy of the front floor longitudinal beam structure, but also ensure the close fit between the battery pack 600 and the vehicle body structure, thereby improving the collision safety of the entire vehicle.

[0038] Further, refer to Figure 2 and Figure 6 Four third bolt holes are further provided on the side of the first connecting plate 100 near the connecting section 300 along the length direction of the first connecting plate 100. The first connecting plate 100 is connected to the battery side enclosure heat insulation plate 700 by fastening with bolts and nuts through the four third bolt holes, thereby providing installation positioning for the battery side enclosure heat insulation plate 700 and enabling the battery side enclosure heat insulation plate 700 to effectively isolate the heat generated by the exhaust pipe of the vehicle body.

[0039] It should be noted that during actual manufacturing, the positions of the first bolt hole 121, the first locating pin 122, the second bolt hole 221, and the second locating pin 222, as well as the length of the connecting section 300 and the number of third cavities can be determined based on the specific specifications of the vehicle body. For example, if the vehicle body has a longer wheelbase, adjustments can be made accordingly to increase the spacing between the first bolt hole 121 and the first locating pin 122, and the spacing between the second bolt hole 221 and the second locating pin 222, or to increase the number of third cavities to increase their density, thereby ensuring that assembly requirements are met. Alternatively, if the battery pack 600 is wide, the number of third cavities can be increased by extending the length of the connecting section 300 while maintaining the triangular angle of the third cavities, thereby ensuring a secure installation of the battery pack 600. Alternatively, if the vehicle body has a lower chassis, the spacing between the first connecting plate 100 and the second connecting plate 200 can be reduced by shortening the length of the connecting section 300 or changing the angle of the connecting section 300 to facilitate assembly requirements.

[0040] In some specific embodiments of the present invention, referring to Figure 2 , a pad 230 is provided on the second connecting plate 200. Part of the second connection points 220 is provided on a side of the pad 230 away from the second connecting plate 200.

[0041] Specifically, one end of the second connecting plate 200 extends outward along the length direction of the second connecting plate 200, and a pad 230 is provided on the top surface of this end of the second connecting plate 200. The pad 230 is in the shape of a trapezoidal structure with a narrow top and a wide bottom, that is, the width of the pad 230 on the side close to the second connecting plate 200 is greater than the width of the pad 230 on the side away from the second connecting plate 200. Among them, a second bolt hole 221 is also provided on the bottom of the pad 230, that is, on the side of the pad 230 close to the second connecting plate 200, Figure 7 The second bolt hole 221 is connected to the wiring harness mounting bracket 900 of the automobile body by bolt and nut fastening, so as to provide a stable mounting point for the wiring harness system of the automobile body. Figure 6 A second bolt hole 221 is also provided on the top of the pad 230, on the side facing away from the second connecting plate 200. Through this second bolt hole 221, the pad 230 is connected to the rear floor body 800 using bolts and nuts. The provision of the pad 230 not only achieves an integrated connection between the wiring harness mounting bracket 900 and the rear floor body 800, but also further distributes impact forces on the rear of the vehicle body, thereby reducing rigid contact between the front floor longitudinal member structure and other components, thereby enhancing the vibration resistance of the overall vehicle structure. This simplifies the structure, reduces production costs, and improves production and assembly efficiency.

[0042] In some specific embodiments of the present invention, referring to Figure 4 and Figure 5 The openings of some first bolt holes 121 are arranged toward the top of the first connecting plate 100, while the openings of other first bolt holes 121 are arranged toward the bottom of the first connecting plate 100. The openings of some second bolt holes 221 are arranged toward the top of the second connecting plate 200, while the openings of other second bolt holes 221 are arranged toward the bottom of the second connecting plate 200. Specifically, the opening ends of some first bolt holes 121 are arranged on the top surface of the first connecting plate 100, while the opening ends of other first bolt holes 121 are arranged on the bottom surface of the first connecting plate 100. This allows for diversified connection options and facilitates meeting assembly requirements. Similarly, the opening ends of some second bolt holes 221 are arranged on the top surface of the second connecting plate 200, while the opening ends of other second bolt holes 221 are arranged on the bottom surface of the second connecting plate 200. This allows for diversified connection options and facilitates meeting assembly requirements. The assembly can be performed on various vehicle bodies of different specifications and types.

[0043] Furthermore, the connecting section 300, first connecting plate 100, and second connecting plate 200 are all manufactured through an aluminum extrusion process. Compared to traditional stamping and welding solutions, this reduces development costs by approximately 80%. Requiring only a single extrusion process followed by minor processing, the components are ready for use, significantly reducing development costs and shortening development cycles by approximately 30%, thereby enhancing market competitiveness.

[0044] It should be noted that the front floor longitudinal beam structure of the present invention can be used as a universal platform solution. For automobile bodies of different specifications and types, it is only necessary to adjust the connection points, cross-sectional dimensions or hole positions accordingly to meet the assembly requirements of automobile bodies of different specifications and types. It is not only suitable for hybrid vehicles, but also for pure electric vehicles, thereby minimizing the development costs of automobile bodies of different specifications and types, shortening the development cycle of parts and components, and improving industrialization efficiency.

[0045] The present invention further provides an automobile, comprising: a front floor longitudinal beam structure as described in any of the above-described specific embodiments. The first connecting plate 100 and the second connecting plate 200 of the front floor longitudinal beam structure are spaced and staggered so that the first connecting plate 100 and the second connecting plate 200 do not interfere with each other. Both connecting plates 100 and 200 can be individually increased or decreased in volume during molding according to the specific assembly requirements of the automobile body, thereby avoiding the need to increase or decrease the overall volume or even redesign the layout. Furthermore, by extending the length of the connecting section 300, the relative position between the first connecting plate 100 and the second connecting plate 200 can be directly adjusted, thereby enabling assembly in automobile bodies of different specifications and types, thereby facilitating assembly requirements. At the same time, multiple first cavities, multiple second cavities and multiple third cavities are respectively provided in the first connecting plate 100, the second connecting plate 200 and the connecting section 300 to reduce the weight of the first connecting plate 100, the second connecting plate 200 and the connecting section 300, respectively, to meet the lightweight requirements of the automobile body, and the multiple first cavities, the multiple second cavities and the multiple third cavities are all arranged adjacent to each other, so that a reinforcing rib structure can be formed between each two adjacent first cavities, second cavities and third cavities, respectively, to ensure rigidity and collision safety.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front floor longitudinal beam structure, characterized in that: include: A first connecting plate (100) and a second connecting plate (200), wherein the first connecting plate (100) and the second connecting plate (200) are arranged in the same direction, and the first connecting plate (100) and the second connecting plate (200) are spaced and staggered with each other; a connecting section (300) obliquely disposed between the first connecting plate (100) and the second connecting plate (200), with both ends of the connecting section (300) respectively connected to the first connecting plate (100) and the second connecting plate (200); A plurality of first cavities are provided in the first connecting plate (100), and the plurality of first cavities are arranged adjacent to each other in sequence; The second connecting plate (200) is provided with a plurality of second cavities, and the plurality of second cavities are arranged adjacent to each other in sequence; A plurality of third cavities are provided in the connecting section (300), and the plurality of third cavities are arranged adjacent to each other in sequence.

2. The front floor longitudinal beam structure according to claim 1, characterized in that: There are a plurality of connecting sections (300), and the plurality of connecting sections (300) are evenly arranged along the length direction of the first connecting plate (100) and the second connecting plate (200); Each two adjacent connecting sections (300) are spaced apart from each other.

3. The front floor longitudinal beam structure according to claim 1, characterized in that: The first cavity, the second cavity and the third cavity are all opened along the length direction of the first connecting plate (100) and the second connecting plate (200).

4. The front floor longitudinal beam structure according to claim 3, characterized in that: A plurality of first reinforcing ribs (110) are provided in the first connecting plate (100), and the plurality of first reinforcing ribs (110) and the inner wall of the first connecting plate (100) together form a plurality of first cavities; A plurality of second reinforcing ribs (210) are provided in the second connecting plate (200), and the plurality of second reinforcing ribs (210) and the inner wall of the second connecting plate (200) together form a plurality of second cavities; A plurality of third reinforcing ribs (310) are provided in the connecting section (300), and the plurality of third reinforcing ribs (310) and the inner wall of the connecting section (300) together form a plurality of third cavities.

5. The front floor longitudinal member structure according to claim 4, characterized in that: The plurality of third reinforcing ribs (310) are all arranged at an angle, so that each of the third cavities forms a triangular structure.

6. The front floor longitudinal beam structure according to claim 1, characterized in that: The first connecting plate (100) is provided with a plurality of first connecting points (120) for connecting external components; The second connecting plate (200) is provided with a plurality of second connecting points (220) for connecting external components.

7. The front floor longitudinal member structure according to claim 6, characterized in that: A cushion block (230) is provided on the second connecting plate (200); At least one of the second connection points (220) is arranged on a side of the cushion block (230) away from the second connection plate (200).

8. The front floor longitudinal member structure according to claim 6, characterized in that: The first connection point (120) includes: a plurality of first bolt holes (121), the plurality of first bolt holes (121) being arranged along the length direction of the first connecting plate (100); A first positioning pin (122) is provided with at least one; The second connection point (220) includes: a plurality of second bolt holes (221), the plurality of second bolt holes (221) being arranged along the length direction of the second connecting plate (200); A second positioning pin (222) is provided with at least one; The positioning end of the first positioning pin (122) and the positioning end of the second positioning pin (222) are oriented in opposite directions.

9. The front floor longitudinal member structure according to claim 8, characterized in that: The openings of a portion of the first bolt holes (121) are arranged toward the upper side of the first connecting plate (100), and the openings of another portion of the first bolt holes (121) are arranged toward the lower side of the first connecting plate (100); The openings of a portion of the second bolt holes (221) are arranged toward the upper side of the second connecting plate (200), and the openings of another portion of the second bolt holes (221) are arranged toward the lower side of the second connecting plate (200).

10. An automobile, characterized in that: include: The front floor longitudinal member structure according to any one of claims 1 to 9.

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