Floor assembly and vehicle

Abstract

This application relates to a floor assembly and a vehicle, belonging to the field of vehicle body reinforcement technology. The floor assembly includes: a longitudinal beam with a first inner cavity extending through it; the longitudinal beam includes at least two first reinforcing plates and at least one second reinforcing plate; the first reinforcing plates are spaced apart within the first inner cavity, and the second reinforcing plate is disposed within the first inner cavity and cross-connected to the first reinforcing plates; a crossbeam connected to the longitudinal beam; the crossbeam has a second inner cavity extending through it, and the crossbeam includes at least one third reinforcing plate and at least one fourth reinforcing plate; the third reinforcing plates are spaced apart within the second inner cavity, and the fourth reinforcing plate is disposed within the second inner cavity and cross-connected to the third reinforcing plates; and a mounting bracket disposed on the side of the longitudinal beam near the bottom of the vehicle and embedded in the first inner cavity, the mounting bracket being connected to at least two of the first reinforcing plates. The multi-cavity structure of this application can significantly increase the structural strength and deformation resistance of the longitudinal and crossbeams, improving the overall rigidity of the vehicle body.

Description

Technical Field

[0001] This application relates to the field of vehicle body reinforcement technology, and more particularly to a floor assembly and a vehicle. Background Technology

[0002] The floor assembly is a key load-bearing and connecting component of a car body, located entirely at the bottom of the vehicle. The bottom of the floor assembly is securely connected to the subframe, shock absorbers, and other chassis suspension systems, providing a foundation for chassis system assembly and force transmission; its top serves as a load-bearing base, supporting the passenger compartment, trunk, and other components.

[0003] The floor assemblies of current mainstream vehicle models typically employ a segmented, spliced ​​structure consisting of longitudinal beams, transverse beams, and floor panels. The longitudinal beams run longitudinally along the vehicle body and primarily transmit longitudinal forces. The transverse beams are spaced laterally along the vehicle body and are welded to the longitudinal beams to form a grid-like support frame. The floor panels are thin steel stampings that cover the frame formed by the longitudinal and transverse beams, and are fixed to the frame by welding or riveting to create a complete floor surface.

[0004] When a car is in motion, uneven road surfaces generate vibrations that first affect the chassis suspension system. These vibrations are then transmitted sequentially through the shock absorbers and coil springs to the floor assembly, and from there further to the main body and seats, ultimately reaching the passengers. This vibration transmission process directly impacts passenger comfort. Furthermore, over long-term use, the connection points between the floor assembly and the chassis suspension system (such as the subframe and shock absorbers) are subject to continuous, high-frequency impact loads from the road surface. These connections are prone to fatigue damage, which, over time, can lead to durability cracking, functional failure, and other problems, severely affecting the reliability and lifespan of the vehicle body structure. Utility Model Content

[0005] This application provides a floor assembly and a vehicle, the purpose of which is to enhance the structural strength of the longitudinal beams and crossbeams by setting a number of reinforcing plates in the inner cavity of the longitudinal beams and crossbeams; at the same time, the subframe mounting bracket is connected to at least two reinforcing plates in the longitudinal beams to form a continuous I-shaped reinforcing structure, thereby improving the connection strength at the connection between the subframe mounting bracket and the longitudinal beams; solving the problem of poor structural stiffness and strength performance of the floor assembly and its connection with the subframe mounting bracket, so as to improve the dynamic and static stiffness, durability and stability of the vehicle body.

[0006] To achieve the above objectives, this application adopts the following technical solution: This application provides a floor assembly, including: A longitudinal beam having a first inner cavity extending along its length, the longitudinal beam comprising at least two first reinforcing plates and at least one second reinforcing plate; the first reinforcing plates are spaced apart in the first inner cavity along the vertical direction, and the second reinforcing plate is disposed in the first inner cavity and is cross-connected to the first reinforcing plates; A crossbeam, one end of which is connected to the longitudinal beam; the crossbeam has a second inner cavity extending through it in the width direction; the crossbeam includes at least one third reinforcing plate and at least one fourth reinforcing plate; the third reinforcing plates are spaced apart in the second inner cavity in the vertical direction; the fourth reinforcing plate is disposed in the second inner cavity and is cross-connected with the third reinforcing plate. The mounting bracket is disposed on the side of the longitudinal beam near the bottom of the vehicle and embedded in the first inner cavity, and the mounting bracket is connected to at least two of the first reinforcing plates.

[0007] In the above embodiments, this application creates multi-cavity structures in the longitudinal and transverse beams by setting reinforcing plates inside the beams. Specifically, on the one hand, the multi-cavity structure can significantly increase the structural strength and deformation resistance of the longitudinal and transverse beams, thereby improving the overall rigidity of the vehicle body. On the other hand, in the event of a frontal collision, the multi-cavity structure of the longitudinal beams increases the front-to-rear force-bearing surface and adds a force transmission structure, which can effectively absorb and disperse longitudinal impact forces, reducing damage to the vehicle body. In a side collision scenario, the multi-cavity structure of the transverse beams works in conjunction with the longitudinal beams to transmit lateral loads. The obstacle first contacts the multi-cavity longitudinal beams and then transmits the impact force to the transverse beams, significantly enhancing the safety performance in frontal and side collisions. At the same time, this structural design can also improve the torsional stiffness and bending stiffness of the assembly structure, ensuring that the vehicle body remains structurally stable under complex stress.

[0008] Simultaneously, the mounting bracket is connected to at least two first reinforcing plates within the longitudinal beam, constructing a continuous I-beam reinforcing structure. This structure strengthens the connection points between the floor assembly and the chassis suspension system, effectively resisting high-frequency, high-impact vibrations from road bumps during vehicle operation. This significantly reduces deformation, cracking, and other damage issues at the connection points caused by concentrated stress, avoiding the risk of connection failure. In summary, the synergistic design of the multi-cavity structure and the I-beam reinforcing structure not only improves the durability of the floor assembly from both the basic structure and key nodes but also reduces the impact of vibrations on the passenger compartment by minimizing vibration transmission and structural deformation, thereby improving overall vehicle ride comfort and ultimately achieving simultaneous optimization of the vehicle assembly structural stability and overall vehicle performance. In some embodiments, the longitudinal beam includes a plurality of blocking plates, which are used to block the opening of the first inner cavity.

[0009] In the above embodiments, the blocking plate of this application can seal multiple openings in the first inner cavity of the longitudinal beam, effectively preventing external dust, moisture and other impurities from entering the interior of the longitudinal beam, avoiding pollution and corrosion inside the longitudinal beam, ensuring the structural stability of the longitudinal beam and extending its service life. In some embodiments, the longitudinal beam includes a first base plate and a second base plate, both of which are located on the side of the longitudinal beam near the bottom of the vehicle. The mounting bracket includes a first mounting bracket and a second mounting bracket, the first mounting bracket being disposed on the first base plate and the second mounting bracket being disposed on the second base plate.

[0010] In the above embodiments, this application provides a first base plate and a second base plate at the bottom of the longitudinal beam, and correspondingly configures a first mounting bracket and a second mounting bracket. On the one hand, this clarifies the installation position and quantity of the mounting brackets, making the connection layout between the mounting brackets and the longitudinal beam more reasonable. On the other hand, the two mounting brackets cooperate with the two base plates at the bottom of the longitudinal beam, which can disperse the impact load from the chassis suspension system, avoid excessive force concentration at a single connection point, reduce fatigue damage to the connection parts caused by long-term high-frequency impact, and further improve the stability and durability of the connection between the floor assembly and the chassis suspension system. In some embodiments, the first mounting bracket, and / or the second mounting bracket, are connected to the first reinforcing plate via a patch plate.

[0011] In the above embodiments, this application strengthens the connection between the mounting bracket and the first reinforcing plate by adding a supplementary plate, which can further increase the structural strength of the connection and reduce damage problems such as deformation and cracking caused by stress concentration at the connection point. This helps to improve the dynamic and static stiffness, durability and stability of the vehicle body and optimize the overall structural performance of the vehicle body. In some embodiments, the longitudinal beam includes a first side plate located on the side of the longitudinal beam facing the vehicle interior; The floor assembly includes a connector; the crossbeam is connected to the first side panel via the connector, and the crossbeam is perpendicular to the first side panel.

[0012] In the above embodiments, this application enables the crossbeams and longitudinal beams to form a T-shaped main reinforcement structure, giving the vehicle body structure higher rigidity, durability and stability, and enhancing the vehicle body's load-bearing and deformation resistance capabilities. In some embodiments, the connector includes a fixing plate, a first upright plate, a second upright plate, a third upright plate, and a fourth upright plate. The fixing plate is fixed to the first side plate. The first upright plate, the second upright plate, the third upright plate, and the fourth upright plate are all fixed to the side of the fixing plate opposite to the first side plate. The first upright plate, the second upright plate, the third upright plate, and the fourth upright plate form an installation cavity. One end of the crossbeam is embedded in the installation cavity and fixed.

[0013] In the above embodiments, this application clarifies that the connector is composed of a fixing plate and multiple upright plates forming an installation cavity. One end of the crossbeam is embedded in the installation cavity and fixed. This structural design can increase the contact area between the crossbeam and the connector, improve the connection strength at the connection between the crossbeam and the longitudinal beam, and ensure the stability of the connection between the two. In some embodiments, the fixing plate has a boss protruding towards the crossbeam on one side facing the crossbeam. The first upright plate, the second upright plate, the third upright plate, and the fourth upright plate are all fixed on the boss. The boss is provided with a reinforcing mesh and several reinforcing ribs in the area within the mounting cavity. The reinforcing mesh and the reinforcing ribs are used to improve the rigidity and strength of the fixing plate.

[0014] In the above embodiments, the connecting member fixing plate of this application is provided with a boss, which, together with the reinforcing mesh and reinforcing ribs on the boss, can effectively improve the strength and deformation resistance of the connecting member itself, thereby making the connection between the crossbeam and the longitudinal beam stronger, further enhancing the torsional and bending performance of the assembly structure, and optimizing the overall structural stability of the vehicle body. In some embodiments, the fixing plate has a recessed cavity on the side facing the first side plate that is recessed toward the crossbeam.

[0015] In the above embodiments, the connecting plate of this application is provided with a cavity, which can play a similar role to a concave rib to improve the strength of the connecting plate itself; on the other hand, it can reduce the contact area between the fixing plate and the first side plate of the longitudinal beam, avoid the two from not being able to fit completely due to processing accuracy issues, thereby improving assembly accuracy and assembly effect, and ensuring the reliability of structural connection. In some embodiments, the first upright plate, and / or the second upright plate, and / or the third upright plate are provided with a plurality of reinforcing columns on the side away from the mounting cavity, and an elbow plate is provided between the reinforcing columns and the boss; the first upright plate, and / or the second upright plate, and / or the third upright plate are provided with a reinforcing enclosure on the side facing the mounting cavity.

[0016] In the above embodiments, by providing reinforcing columns, elbow plates and reinforcing surrounds on the upright plates of the connectors, this application can significantly improve the strength and deformation resistance of the connectors themselves, making the connection between the crossbeam and the longitudinal beam stronger, further enhancing the torsional and bending performance of the assembly structure, and ensuring that the vehicle body structure is more stable and durable under stress. In addition, this application also provides a vehicle, including a body, a chassis suspension system and the aforementioned floor assembly; The floor assembly is located at the bottom of the vehicle body, and the chassis suspension system is located at the bottom of the floor assembly and connected to the floor assembly.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] Figure 1 This is a first-view perspective perspective view of the floor assembly provided in the embodiments of this application; Figure 2 This is a second-view perspective perspective view of the floor assembly provided in the embodiments of this application; Figure 3 This is a top view of the floor assembly provided in the embodiments of this application; Figure 4 yes Figure 3 Schematic diagram of AA section in the middle; Figure 5 yes Figure 3 Schematic diagram of the BB cross section in the middle; Figure 6 yes Figure 5 Enlarged view of part D in the image; Figure 7 yes Figure 3 Schematic diagram of the CC section in the image; Figure 8 This is a first-view perspective three-dimensional schematic diagram of the longitudinal beam provided in the embodiments of this application; Figure 9 This is a second-view perspective three-dimensional schematic diagram of the longitudinal beam provided in the embodiments of this application; Figure 10 This is a bottom view of the longitudinal beam provided in the embodiment of this application; Figure 11 yes Figure 10 Schematic diagram of the EE cross section in the diagram; Figure 12 yes Figure 10 FF cross-section diagram in the image; Figure 13 This is a three-dimensional schematic diagram of the crossbeam and connector provided in the embodiments of this application; Figure 14This is a first-view perspective perspective view of the connector provided in the embodiment of this application; Figure 15 This is a second-view perspective perspective view of the connector provided in the embodiments of this application; Figure 16 This is a third-view perspective perspective view of the connector provided in the embodiments of this application; Figure 17 This is a perspective view of the first connecting plate provided in an embodiment of this application; Figure 18 This is a three-dimensional schematic diagram of the second connecting plate provided in the embodiments of this application.

[0019] In the above figures: 100, longitudinal beam; 110, first base plate; 120, second base plate; 130, first side plate; 140, first inner cavity; 150, blocking plate; 160, first reinforcing plate; 170, second reinforcing plate; 180, patch plate; 200, crossbeam; 210, third reinforcing plate; 220, fourth reinforcing plate; 230, second inner cavity; 240, third base plate; 250, first top plate; 251, extension; 300, connector; 310, fixing plate; 311, boss; 312, reinforcement. 313. Reinforcing mesh; 314. Cavity; 320. First upright plate; 330. Second upright plate; 340. Third upright plate; 350. Fourth upright plate; 360. Reinforcing column; 370. Elbow plate; 380. Reinforcing enclosure plate; 400. First mounting bracket; 410. First threaded sleeve; 500. Second mounting bracket; 510. Second threaded sleeve; 600. First floor; 700. Second floor; 800. First connecting plate; 810. First folding plate; 900. Second connecting plate; 910. Second folding plate. Detailed Implementation

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0023] Additionally, if the meaning of "and / or" in the text is that it includes three parallel options, taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0024] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0025] The floor assembly is a key load-bearing and connecting component of a car body, located at the bottom of the vehicle and playing a crucial role in the body structure. From a connection and functional perspective, its bottom needs to be securely connected to the subframe, shock absorbers, and other chassis suspension systems, providing a reliable foundation for the precise assembly of the chassis system and the transmission of forces during driving. Its top, as the core load-bearing surface, supports the passenger compartment structure and the trunk storage area, making it a vital basic component ensuring the integrity of the vehicle's functions.

[0026] The floor assemblies of most mainstream vehicles today generally adopt a segmented splicing structure consisting of longitudinal beams, cross beams, and floor panels. The longitudinal beams extend along the longitudinal direction of the vehicle body, their core function being to transmit longitudinal forces and provide support for the longitudinal rigidity of the vehicle body. The cross beams are distributed laterally along the vehicle body and are fixedly connected to the longitudinal beams by welding, together forming a grid-like support frame to enhance the lateral load-bearing capacity of the vehicle body. The floor panels are thin steel sheet stamped parts that cover the frame formed by the longitudinal and cross beams, and are firmly bonded to the frame through welding or riveting processes, ultimately forming a flat, stable, and complete floor surface.

[0027] During actual driving, when encountering uneven road conditions, the resulting bumps and vibrations first act on the chassis suspension system. They are then transmitted sequentially through the shock absorbers, coil springs, and other suspension components to the floor assembly, and further transmitted from the floor assembly to the main body and seats, ultimately reaching the passengers. Meanwhile, over long-term use, the connection points between the floor assembly and the chassis suspension system (such as the subframe and shock absorbers) are subject to continuous and high-frequency impact loads from the road surface. These connection structures are prone to fatigue damage, which, over time, can easily lead to durability cracking, functional failure, and other problems, severely impacting the reliability and lifespan of the vehicle body structure.

[0028] Based on this, this application proposes a floor assembly and a vehicle. By setting several reinforcing plates inside the longitudinal beams 100 and cross beams 200 of the floor assembly, the longitudinal beams 100 and cross beams 200 form a multi-cavity structure, thereby strengthening the structural strength of the longitudinal beams 100 and cross beams 200 themselves. At the same time, the subframe mounting bracket is connected to at least two first reinforcing plates 160 inside the longitudinal beams 100 to construct a continuous I-shaped reinforcing structure, further improving the connection strength at the connection between the subframe mounting bracket and the longitudinal beams 100. The longitudinal beams 100 and cross beams 200 work together to form a T-shaped main reinforcing structure. These designs ultimately improve the dynamic and static stiffness, durability and stability of the vehicle body structure, and enhance the vehicle's frontal, rear and side collision safety performance.

[0029] It is worth noting that the technical solution of this application has universality, but it is particularly applicable to solving the problems faced by the key component of the rear shock absorber mounting point in existing automobiles. As the core node for transmitting force and vibration between the rear suspension system and the vehicle body, this component must continuously withstand huge and high-frequency impact loads from the road surface during vehicle operation. Under long-term use, traditional structures are prone to problems such as durability cracking and functional failure due to stress concentration. This application, through the multi-cavity structure of the longitudinal beam 100 and the cross beam 200, the I-beam continuous reinforcement structure, and the reinforcement design of the connector 300, effectively improves the structural rigidity and fatigue resistance of this area. At the same time, it should be clarified that although the technical solution of this application initially focused on the optimization of the vehicle body structure related to the rear shock absorber mounting point, and can effectively solve the core problems such as insufficient structural strength and easy cracking in this scenario, the application scope of the solution is not limited to this, and it is feasible to extend it to other similar stress scenarios of the vehicle body. For example, it can be extended to the optimization of local structures of the vehicle body such as the front shock absorber mounting point and the key connection area of ​​the subframe, which also need to withstand high-frequency impact loads.

[0030] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0031] As attached Figures 1 to 18 As shown in an illustrative embodiment of this application, the floor assembly includes a longitudinal beam 100. The longitudinal beam 100 is designed as an arched structure. The arched structure is designed to avoid the vehicle tires and prevent the longitudinal beam 100 from interfering with the tires in space. At the same time, in order to meet the arrangement requirements of other structural components inside the vehicle body, the longitudinal beam 100 is also provided with several notches.

[0032] Specifically, the longitudinal direction of the vehicle is defined as the longitudinal direction of the floor assembly and its components, i.e., the length direction, where the direction of the front of the vehicle is front and the direction of the rear of the vehicle is rear; the vertical direction of the vehicle is defined as the vertical direction of the floor assembly and its components, i.e., the height direction, where the direction of the roof is up and the direction of the bottom of the vehicle is down; the left-right direction of the vehicle is defined as the left-right direction of the floor assembly and its components (from the perspective of facing the front of the vehicle, the left side is left and the right side is right), i.e., the width direction; the above direction definition standards are uniformly applied throughout the text and will not be repeated hereafter.

[0033] In some embodiments, the longitudinal beam 100 is provided with a first inner cavity 140 extending along the length of the vehicle. Since the longitudinal beam 100 is an arched structure, the first inner cavity 140 has multiple openings.

[0034] In some embodiments, the longitudinal beam 100 includes at least two first reinforcing plates 160, which are spaced apart in the first inner cavity 140 along the vertical direction of the vehicle; and, along the width direction of the vehicle body, the width of each first reinforcing plate 160 completely covers its entire size at its installation position in the first inner cavity 140, so that the first reinforcing plate 160 can be connected to the two side walls of the first inner cavity 140 in the width direction of the vehicle body.

[0035] In some embodiments, the projection range of all the first reinforcing plates 160 on the horizontal plane can completely cover the overall dimensions of the longitudinal beam 100 along the length of the vehicle body. This means that the first reinforcing plates 160 provide lateral support along the entire length of the longitudinal beam 100, ensuring that the longitudinal beam 100 is structurally reinforced throughout its entire length. This avoids weak areas without reinforcement support, thereby ensuring that the longitudinal beam 100 is subjected to uniform stress along the length of the vehicle body. This further enhances the overall structural stability and deformation resistance of the longitudinal beam 100, providing full-length protection for the strength advantages of the multi-cavity structure.

[0036] In some embodiments, the first reinforcing plate 160 is horizontally disposed in the first inner cavity 140.

[0037] In some embodiments, the longitudinal beam 100 includes at least one second reinforcing plate 170, which is disposed in the first inner cavity 140 and cross-connected with the first reinforcing plate 160. The first reinforcing plate 160 and the second reinforcing plate 170 divide the first inner cavity 140 of the longitudinal beam 100 into several cavities to enhance the structural strength. Furthermore, along the vehicle height direction, the height of each second reinforcing plate 170 completely covers its entire size at the installation position in the first inner cavity 140, so that the second reinforcing plate 170 can be fully connected to the two side walls of the first inner cavity 140 in the vehicle height direction.

[0038] In some embodiments, the second reinforcing plate 170 is vertically connected to the first reinforcing plate 160.

[0039] In some embodiments, the longitudinal beam 100 is integrally formed with the first reinforcing plate 160 and the second reinforcing plate 170 in the first inner cavity 140.

[0040] In some embodiments, the longitudinal beam 100 is manufactured using a one-piece extrusion molding process. This structure significantly reduces the number of parts compared to traditional vehicle models, achieving fewer parts, improving assembly installation accuracy, and the extrusion molding process results in products with minimal springback and high precision, further increasing the accuracy of vehicle body installation.

[0041] In some embodiments, the floor assembly includes a crossbeam 200, one end of which is connected to a longitudinal beam 100; and the connection is located near the middle of the longitudinal beam 100.

[0042] In some embodiments, the crossbeam 200 is provided with a second inner cavity 230 extending through the width direction of the vehicle.

[0043] In some embodiments, the crossbeam 200 includes at least one third reinforcing plate 210, which is spaced apart in the second inner cavity 230 along the vertical direction of the vehicle. The third reinforcing plate 210 extends from one end of the crossbeam 200 to the other end. Furthermore, along the length of the vehicle body, the width of each third reinforcing plate 210 completely covers its entire size at its installation position in the second inner cavity 230, so that the third reinforcing plate 210 can be connected to the two side walls of the second inner cavity 230 in the length direction of the vehicle body.

[0044] In some embodiments, the number of third reinforcing plates 210 is one.

[0045] In some embodiments, the third reinforcing plate 210 is horizontally positioned.

[0046] In some embodiments, the crossbeam 200 includes at least one fourth reinforcing plate 220, which is disposed in the second inner cavity 230 and cross-connected with the third reinforcing plate 210. The fourth reinforcing plate 220 extends from one end of the crossbeam 200 to the other end. Furthermore, along the vehicle height direction, the height of each fourth reinforcing plate 220 completely covers its entire dimensions at its installation position in the second inner cavity 230, so that the fourth reinforcing plate 220 can be connected to the two side walls of the second inner cavity 230 in the vehicle height direction.

[0047] In some embodiments, the number of fourth reinforcing plates 220 is one.

[0048] In some embodiments, the fourth reinforcing plate 220 is vertically connected to the third reinforcing plate 210 to form a grid-shaped cross-sectional cavity reinforcement structure. Compared with traditional vehicle models, this application has only one crossbeam 200, reducing the need for multiple crossbeams 200 and reinforcing members to meet vehicle body performance and requirements, thus achieving the vehicle body requirements of fewer parts, lower cost, and higher precision.

[0049] In some embodiments, the crossbeam 200 is manufactured using a one-piece extrusion molding process. This structure significantly reduces the number of parts compared to traditional vehicle components, achieving fewer parts, improving assembly installation accuracy, and the extrusion molding process results in products with minimal springback and high precision, further increasing the accuracy of vehicle body installation.

[0050] In some embodiments, the floor assembly includes a mounting bracket disposed on the side of the longitudinal beam 100 near the bottom of the vehicle and embedded in a first inner cavity 140, the mounting bracket being connected to at least two first reinforcing plates 160; wherein the mounting bracket is used for connecting the subframe to the longitudinal beam 100.

[0051] In the above embodiments, this application provides reinforcing plates inside the longitudinal beam 100 and the transverse beam 200, thereby forming multi-cavity structures in both beams. Specifically, on the one hand, the multi-cavity structure can significantly increase the structural strength and deformation resistance of the longitudinal beam 100 and the transverse beam 200, improving the overall rigidity of the vehicle body. On the other hand, in the event of a frontal collision, the multi-cavity structure of the longitudinal beam 100 increases the front-to-rear force-bearing surface and adds a force-transmitting structure, effectively absorbing and dispersing longitudinal impact forces and reducing damage to the vehicle body. In a side collision scenario, the multi-cavity structure of the transverse beam 200 works in conjunction with the longitudinal beam 100 to transmit lateral loads. The obstacle first contacts the multi-cavity longitudinal beam 100 and then transmits the impact force to the transverse beam 200, significantly enhancing frontal and side collision safety performance. At the same time, this structural design can also improve the torsional stiffness and bending stiffness of the assembly structure, ensuring that the vehicle body maintains structural stability under complex stress conditions.

[0052] Simultaneously, the mounting bracket is connected to at least two first reinforcing plates 160 within the longitudinal beam 100, constructing a continuous I-beam reinforcing structure. This structure strengthens the connection point between the floor assembly and the chassis suspension system, effectively resisting high-frequency, high-impact vibrations from road bumps during vehicle operation. This significantly reduces deformation and cracking at the connection points due to concentrated stress, preventing connection failure. In summary, the synergistic design of the multi-cavity structure and the I-beam reinforcing structure not only improves the durability of the floor assembly from both the basic structure and key nodes, but also reduces the impact of vibrations on the passenger compartment by decreasing vibration transmission and structural deformation, thereby improving overall vehicle ride comfort. Ultimately, this achieves simultaneous optimization of the stability of the body assembly structure and the overall vehicle performance. This assembly structure utilizes only a few components and, through this structural design, reduces the space occupied by components compared to traditional models. In other words, the assembly occupies less space, which is beneficial for improving the overall vehicle layout. In some embodiments, the longitudinal beam 100 includes a plurality of blocking plates 150, which are used to block the opening of the first inner cavity 140.

[0053] In the above embodiments, the blocking plate 150 of this application can block multiple openings of the first inner cavity 140 of the longitudinal beam 100, effectively preventing external dust, moisture and other impurities from entering the interior of the longitudinal beam 100, avoiding pollution and corrosion inside the longitudinal beam 100, ensuring the structural performance stability of the longitudinal beam 100, and extending the service life of the longitudinal beam 100.

[0054] In some embodiments, the longitudinal beam 100 includes a first base plate 110 and a second base plate 120, both of which are located on the side of the longitudinal beam 100 near the bottom of the vehicle; the first base plate 110 and the second base plate 120 are located on both sides of the arched structure of the longitudinal beam 100.

[0055] In some embodiments, the mounting bracket includes a first mounting bracket 400 and a second mounting bracket 500. The first mounting bracket 400 is disposed on the first base plate 110 and embedded in the first inner cavity 140, and the first mounting bracket 400 is connected to at least two first reinforcing plates 160. The second mounting bracket 500 is disposed on the second base plate 120 and embedded in the first inner cavity 140, and the second mounting bracket 500 is disposed on the side of the second base plate 120 near the first base plate 110, and the second mounting bracket 500 is connected to at least two first reinforcing plates 160.

[0056] In the above embodiments, this application provides a first base plate 110 and a second base plate 120 at the bottom of the longitudinal beam 100, and correspondingly configures a first mounting bracket 400 and a second mounting bracket 500. On the one hand, this clarifies the installation position and quantity of the mounting brackets, making the connection layout between the mounting brackets and the longitudinal beam 100 more reasonable. On the other hand, the two mounting brackets cooperate with the two base plates at the bottom of the longitudinal beam 100, which can disperse the impact load from the chassis suspension system, avoid excessive force concentration at a single connection point, reduce fatigue damage to the connection parts caused by long-term high-frequency impact, and further improve the stability and durability of the connection between the floor assembly and the chassis suspension system.

[0057] In some embodiments, the first mounting bracket 400 and the second mounting bracket 500 are connected and fixed to the first reinforcing plate 160 by laser welding to form a continuous I-shaped reinforcing structure, which further improves the performance of the assembly, effectively absorbs the vertical vibration excitation from the lower suspension system, greatly reduces vibration and deformation, and improves sound insulation, which in turn improves the overall NVH (Noise, Vibration, and Harshness, a key indicator for measuring the comfort and quality of a car) and stability.

[0058] In some embodiments, the first mounting bracket 400 is provided with a first threaded sleeve 410 for connection to the subframe.

[0059] In some embodiments, the second mounting bracket 500 is provided with a second threaded sleeve 510 for connection to the subframe.

[0060] In some embodiments, the first mounting bracket 400 is connected to the first reinforcing plate 160 via a patch plate 180.

[0061] In some embodiments, the second mounting bracket 500 is connected to the first reinforcing plate 160 via a patch plate 180.

[0062] In the above embodiments, this application strengthens the connection between the mounting bracket and the first reinforcing plate 160 by supplementing the plate 180, which can further increase the structural strength of the connection and reduce the deformation, cracking and other damage problems caused by stress concentration at the connection, thereby helping to improve the dynamic and static stiffness, durability and stability of the vehicle body and optimize the overall structural performance of the vehicle body.

[0063] In some embodiments, the longitudinal beam 100 is arranged along the longitudinal direction of the vehicle, and the longitudinal beam 100 includes a first side plate 130 located on the side of the longitudinal beam 100 facing the interior of the vehicle.

[0064] In some embodiments, the floor assembly includes a connector 300; a crossbeam 200 is connected to a first side panel 130 via the connector 300, the crossbeam 200 being perpendicular to the first side panel 130.

[0065] In the above embodiments, this application enables the crossbeam 200 and the longitudinal beam 100 to form a T-shaped main reinforcement structure, giving the vehicle body structure higher rigidity, durability and stability, and strengthening the vehicle body's load-bearing and deformation resistance capabilities.

[0066] In some embodiments, the position of the connector 300 corresponds to the installation position of the second mounting bracket 500 on the longitudinal beam 100, that is, the connector 300 is located at the installation position of the second mounting bracket 500 on the longitudinal beam 100, on the first side plate 130. Through this positional correspondence design, the area can form a structural synergistic reinforcement, further increasing the connection stiffness of the assembly at this position.

[0067] In some embodiments, the connector 300 is a cast zinc-aluminum-magnesium material product.

[0068] In some embodiments, the connector 300 includes a fixing plate 310, a first upright plate 320, a second upright plate 330, a third upright plate 340, and a fourth upright plate 350. The fixing plate 310 is fixed to the first side plate 130. The first upright plate 320, the second upright plate 330, the third upright plate 340, and the fourth upright plate 350 are all fixed to the side of the fixing plate 310 away from the first side plate 130. The sides of the first upright plate 320, the second upright plate 330, the third upright plate 340, and the fourth upright plate 350 are connected to each other to form an installation cavity. One end of the crossbeam 200 is embedded in the installation cavity and fixed.

[0069] In some embodiments, the second upright plate 330 is located on the side of the connector 300 near the bottom of the vehicle, and the fourth upright plate 350 is located on the side of the connector 300 near the top of the vehicle.

[0070] In the above embodiments, this application clarifies that the connector 300 is composed of a fixing plate 310 and multiple vertical plates forming an installation cavity. One end of the crossbeam 200 is embedded in the installation cavity and fixed. This structural design can increase the connection contact area between the crossbeam 200 and the connector 300, improve the connection strength at the connection between the crossbeam 200 and the longitudinal beam 100, and ensure the stability of the connection between the two.

[0071] In some embodiments, the connector 300 is manufactured using a one-piece die-casting process.

[0072] In some embodiments, the fixing plate 310 of the connector 300 is riveted to the first side plate 130 by rivets.

[0073] In some embodiments, the vertical distance between the side of the fourth upright plate 350 away from the fixed plate 310 and the fixed plate 310 is less than the vertical distance between the side of the first upright plate 320, the second upright plate 330, or the third upright plate 340 away from the fixed plate 310 and the fixed plate 310; that is, the mounting cavity has a notch on the side near the top of the vehicle. Furthermore, the vertical distances between the side of the first upright plate 320, the second upright plate 330, and the third upright plate 340 away from the fixed plate 310 and the fixed plate 310 are all equal.

[0074] In some embodiments, such as Figure 6 As shown, the crossbeam 200 includes a third bottom plate 240 and a first top plate 250. The third bottom plate 240 is located on the side of the crossbeam 200 near the bottom of the vehicle, and the first top plate 250 is located on the side of the crossbeam 200 near the top of the vehicle. An extension 251 is provided on the side of the first top plate 250 facing the connector 300, that is, the end of the first top plate 250 facing the connector 300 protrudes slightly beyond the other sides of the crossbeam 200. When the crossbeam 200 is assembled with the connector 300, the third bottom plate 240 overlaps the side of the second vertical plate 330 facing the top of the vehicle, and the extension 251 of the first top plate 250 overlaps the side of the fourth vertical plate 350 facing the top of the vehicle. Specifically, except for the extension 251 of the first top plate 250, all other sides of the crossbeam 200 are embedded in the mounting cavity.

[0075] In some embodiments, the first upright plate 320, the second upright plate 330 and the third upright plate 340 of the connector 300 are connected to the crossbeam 200 by rivets, which further improves the stability of the assembly connection.

[0076] In some embodiments, the fixing plate 310 is provided with a boss 311 protruding towards the beam 200 on the side facing the beam 200. The first upright plate 320, the second upright plate 330, the third upright plate 340 and the fourth upright plate 350 are all fixed on the boss 311. The boss 311 is provided with a reinforcing mesh 313 and several reinforcing ribs 312 in the area inside the mounting cavity.

[0077] In some embodiments, there are two reinforcing ribs 312, which are connected in a cross shape.

[0078] In the above embodiments, the connecting member 300 fixing plate 310 of this application is provided with a boss 311. With the reinforcement mesh 313 and reinforcement rib 312 on the boss 311, the strength and deformation resistance of the connecting member 300 itself can be effectively improved, thereby making the connection between the crossbeam 200 and the longitudinal beam 100 stronger, further enhancing the torsional and bending performance of the assembly structure, and optimizing the overall structural stability of the vehicle body.

[0079] In some embodiments, the fixing plate 310 is provided with a recess 314 recessed toward the crossbeam 200 on the side facing the first side plate 130.

[0080] In some embodiments, the depth of the cavity 314 is 3 mm to 10 mm.

[0081] If the depth of the cavity 314 is less than 3mm, the structural reinforcement effect it forms will be very weak and cannot effectively improve the structural strength of the fixing plate 310 itself. At the same time, the shallow cavity 314 is also difficult to significantly reduce the contact area between the fixing plate 310 and the first side plate 130 of the longitudinal beam 100. It has limited effect on improving the assembly problems caused by uneven surfaces and cannot achieve the expected assembly optimization effect.

[0082] If the depth of the cavity 314 is greater than 10mm, although the contact area can be further reduced, it will excessively weaken the thickness of the fixing plate 310, resulting in a decrease in the structural strength of the fixing plate 310 itself. It may even cause stress concentration when subjected to impact load, causing the fixing plate 310 to deform or crack, which will affect the overall structural reliability and load-bearing capacity of the connector 300.

[0083] In the above embodiments, the fixing plate 310 of the connector 300 of this application is provided with a cavity 314, which can play a similar role to a concave rib to improve the strength of the connector 300 itself; on the other hand, it can reduce the contact area between the fixing plate 310 and the first side plate 130 of the longitudinal beam 100, avoid the two from not being able to fit completely due to processing accuracy issues, thereby improving assembly accuracy and assembly effect, and ensuring the reliability of structural connection.

[0084] Specifically, in actual production, due to limitations in manufacturing precision, it is difficult to ensure that the surfaces of the fixing plate 310 and the first side plate 130 are completely flat. Their surfaces may have defects such as local depressions and protrusions. If these two large-area structures are directly attached and assembled, the unevenness of the surfaces will prevent them from achieving full and tight contact. In fact, one side of the fixing plate 310 may even warp due to uneven force, which will damage the flatness and stability of the assembly and ultimately affect the overall assembly effect and connection reliability. Therefore, this application provides a cavity 314 on the fixing plate 310 to reduce the contact area between the fixing plate 310 and the first side plate 130, so as to avoid the above problems as much as possible.

[0085] In some embodiments, a plurality of reinforcing columns 360 are provided on the side of the first upright plate 320, and / or the second upright plate 330, and / or the third upright plate 340 away from the mounting cavity; In some embodiments, the reinforcing column 360 is provided at the connection between two adjacent uprights and in the middle of the upright, thereby improving the strength and deformation resistance of the upright.

[0086] In some embodiments, an elbow plate 370 is provided between the reinforcing column 360 and the boss 311 to improve the strength and deformation resistance of the upright plate.

[0087] In some embodiments, the first upright plate 320, and / or, the second upright plate 330, and / or the third upright plate 340 are provided with a reinforcing shroud 380 on the side facing the mounting cavity to improve the strength and deformation resistance of the upright plate.

[0088] In the above embodiments, by providing reinforcing columns 360, elbow plates 370 and reinforcing surround plates 380 on the upright plate of the connector 300, this application can significantly improve the strength and deformation resistance of the connector 300 itself, making the connection between the crossbeam 200 and the longitudinal beam 100 stronger, further enhancing the torsional and bending performance of the assembly structure, and ensuring that the vehicle body structure is more stable and durable under stress.

[0089] In some embodiments, the floor assembly includes a first floor 600 and a second floor 700. The side of the first floor 600 near the stern of the vehicle is connected to a crossbeam 200, and the side of the first floor 110 near the longitudinal beam 100 is connected to the longitudinal beam 100 via a first connecting plate 800. The side of the second floor 700 near the bow of the vehicle is connected to the crossbeam 200, and the side of the first floor 110 near the longitudinal beam 100 is connected to the longitudinal beam 100 via the first connecting plate 800.

[0090] In some embodiments, both the first floor 600 and the second floor 700 are fixed by riveting.

[0091] In some embodiments, the first floor 600 includes a first fold plate 810, which is riveted to the first floor 600 by rivets.

[0092] In some embodiments, the second floor 700 includes a second folding plate 910, which is riveted to the second floor 700 by rivets.

[0093] The floor assembly is located at the bottom of the vehicle body, and the chassis suspension system is located at the bottom of the floor assembly and connected to the floor assembly.

[0094] Furthermore, this application also provides a vehicle comprising a body, a chassis suspension system, and a floor assembly according to any of the above embodiments; wherein, the floor assembly is integrally mounted on the bottom area of ​​the body, forming the core load-bearing frame of the body bottom; the chassis suspension system (including subframe, shock absorbers, and other components) is arranged at the bottom of the floor assembly and is stably connected to the floor assembly through mounting brackets (such as the first mounting bracket 400 and the second mounting bracket 500) on the floor assembly, forming a complete force transmission link of body-floor assembly-chassis suspension system, ensuring the effective transmission of force and vibration during vehicle operation, and at the same time, relying on the reinforced structure of the floor assembly, improving the overall structural stability and driving safety of the vehicle.

[0095] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A floor assembly characterized by, It includes: A longitudinal beam (100) is provided with a first inner cavity (140) extending along its length. The longitudinal beam (100) includes at least two first reinforcing plates (160) and at least one second reinforcing plate (170). The first reinforcing plates (160) are spaced apart in the first inner cavity (140) along the vertical direction, and the second reinforcing plate (170) is provided in the first inner cavity (140) and is cross-connected with the first reinforcing plates (160). A crossbeam (200) is provided, one end of which is connected to the longitudinal beam (100); the crossbeam (200) is provided with a second inner cavity (230) through the width direction; the crossbeam (200) includes at least one third reinforcing plate (210) and at least one fourth reinforcing plate (220); the third reinforcing plates (210) are spaced apart in the second inner cavity (230) in the vertical direction; the fourth reinforcing plate (220) is provided in the second inner cavity (230) and is cross-connected with the third reinforcing plate (210); Mounting bracket, which is disposed on the side of the longitudinal beam (100) near the bottom of the vehicle and embedded in the first inner cavity (140), is connected to at least two of the first reinforcing plates (160).

2. The floor assembly according to claim 1, characterized in that, The longitudinal beam (100) includes several blocking plates (150), which are used to block the opening of the first inner cavity (140).

3. A floor assembly according to claim 2, characterized in that, The longitudinal beam (100) includes a first base plate (110) and a second base plate (120), both of which are located on the side of the longitudinal beam (100) near the bottom of the vehicle. The mounting bracket includes a first mounting bracket (400) and a second mounting bracket (500), the first mounting bracket (400) being disposed on the first base plate (110) and the second mounting bracket (500) being disposed on the second base plate (120).

4. A floor assembly according to claim 3, characterized in that, The first mounting bracket (400), and / or the second mounting bracket (500) are connected to the first reinforcing plate (160) via a patch plate (180).

5. A floor assembly according to any one of claims 1 to 4, characterized in that, The longitudinal beam (100) includes a first side plate (130) located on the side of the longitudinal beam (100) facing the interior of the vehicle; The floor assembly includes a connector (300); the crossbeam (200) is connected to the first side panel (130) via the connector (300), and the crossbeam (200) is perpendicular to the first side panel (130).

6. A floor assembly according to claim 5, characterized in that, The connector (300) includes a fixing plate (310), a first upright plate (320), a second upright plate (330), a third upright plate (340), and a fourth upright plate (350). The fixing plate (310) is fixed to the first side plate (130). The first upright plate (320), the second upright plate (330), the third upright plate (340), and the fourth upright plate (350) are all fixed to the side of the fixing plate (310) away from the first side plate (130). The first upright plate (320), the second upright plate (330), the third upright plate (340), and the fourth upright plate (350) form an installation cavity. One end of the crossbeam (200) is embedded in the installation cavity and fixed.

7. A floor assembly according to claim 6, characterized in that, The fixing plate (310) has a boss (311) protruding towards the crossbeam (200) on the side facing the crossbeam (200). The first upright plate (320), the second upright plate (330), the third upright plate (340) and the fourth upright plate (350) are all fixed on the boss (311). The boss (311) has a reinforcing mesh (313) and several reinforcing ribs (312) in the area of ​​the mounting cavity. The reinforcing mesh (313) and the reinforcing ribs (312) are used to improve the rigidity and strength of the fixing plate (310).

8. A floor assembly according to claim 7, characterized in that, The fixing plate (310) has a recess (314) on the side facing the first side plate (130) that is recessed toward the crossbeam (200).

9. A floor assembly according to claim 8, characterized in that, The first upright plate (320), and / or the second upright plate (330), and / or the third upright plate (340) are provided with a plurality of reinforcing columns (360) on the side away from the mounting cavity, and an elbow plate (370) is provided between the reinforcing columns (360) and the boss (311); the first upright plate (320), and / or the second upright plate (330), and / or the third upright plate (340) are provided with a reinforcing enclosure plate (380) on the side facing the mounting cavity.

10. A vehicle, characterized in that, Includes a vehicle body, a chassis suspension system, and a floor assembly as described in any one of claims 1 to 9; The floor assembly is located at the bottom of the vehicle body, and the chassis suspension system is located at the bottom of the floor assembly and connected to the floor assembly.

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