Vehicle body floor assembly combination structure and vehicle

Abstract

The application relates to a vehicle body floor assembly combined structure and a vehicle, which comprises a second rear floor panel, a rear floor crossbeam assembly fixed to one end of the second rear floor panel, a rear floor front crossbeam welding joint arranged below the rear floor crossbeam assembly, the rear floor front crossbeam welding joint comprising a first rear floor panel, a through beam assembly installed on the inner side of the first rear floor panel, a rear floor lower panel installed below the first rear floor panel, the through beam assembly being located between the first rear floor panel and the rear floor lower panel, and cavities being formed between the first rear floor panel and the through beam assembly and between the through beam assembly and the rear floor lower panel. The overlapping structure of the vehicle body floor assembly is optimized, a multi-cavity configuration is additionally arranged, a stress cavity is formed, and the crash safety, mechanics and NVH (noise, vibration and harshness) performance of the vehicle body assembly are improved.

Description

Technical Field

[0001] This invention relates to the automotive field, specifically to a vehicle body floor assembly structure and vehicle. Background Technology

[0002] The overall collision safety performance of passenger vehicles is a crucial performance indicator for protecting the safety of occupants. The body assembly is a vital component in achieving this performance. While meeting the relevant requirements for overall collision safety, optimization of the body assembly's structure and layout can also improve its rigidity, strength, and other mechanical properties, thereby enhancing the vehicle's NVH (noise, vibration, and harshness) performance and improving occupant comfort. With increasingly stringent requirements for overall vehicle collision safety, mechanical properties, and NVH performance, even higher demands are being placed on the collision safety, mechanical properties, and NVH performance of the body assembly.

[0003] As an important component of the vehicle body assembly, the vehicle floor assembly structure mainly includes the front floor assembly, the rear floor assembly, and the floor side longitudinal beam assembly. However, the vehicle floor assembly structure is somewhat lacking in meeting the ever-increasing requirements for vehicle body collision safety performance, mechanical performance, and NVH performance.

[0004] Therefore, this proposal puts forward a vehicle body floor assembly assembly structure and vehicle to improve the vehicle body assembly's collision safety, mechanical properties, and NVH performance. Summary of the Invention

[0005] This application provides a vehicle body floor assembly assembly structure and vehicle to improve the vehicle body assembly's collision safety, mechanical properties, and NVH performance.

[0006] In a first aspect, embodiments of this application provide a vehicle floor assembly assembly structure, comprising: a second rear floor panel; a rear floor crossbeam assembly fixed to one end of the second rear floor panel; and a rear floor front crossbeam welded assembly disposed below the rear floor crossbeam assembly, the rear floor front crossbeam welded assembly comprising: a first rear floor panel; a through beam assembly installed inside the first rear floor panel; and a rear floor lower panel installed below the first rear floor panel, the through beam assembly being located between the first rear floor panel and the rear floor lower panel, and cavities being formed between the first rear floor panel and the through beam assembly, and between the through beam assembly and the rear floor lower panel.

[0007] In conjunction with the first aspect, in one embodiment, the through beam assembly includes a through plate and a tube beam, the tube beam being mounted on the through plate.

[0008] In conjunction with the first aspect, in one embodiment, a rear floor lower crossbeam assembly is provided on the second rear floor panel, and the rear floor lower crossbeam assembly is connected and fixed to the rear floor front crossbeam welded assembly via a first connecting plate and a second connecting plate.

[0009] In conjunction with the first aspect, in one embodiment, the vehicle floor assembly assembly further includes a floor edge longitudinal beam assembly, the floor edge longitudinal beam assembly including a sill inner panel assembly and a sill reinforcing beam assembly, a cavity being formed between the sill inner panel assembly and the sill reinforcing beam assembly, a sill reinforcing plate assembly being installed between the sill inner panel assembly and the sill reinforcing beam assembly, and a first lift support point and a second lift support point being respectively provided at both ends of the sill reinforcing plate assembly.

[0010] In conjunction with the first aspect, in one embodiment, the sill reinforcement assembly includes a first sill reinforcement assembly, the first sill reinforcement assembly including: a first sill reinforcement plate, the two ends of which are respectively provided with a first lift support point and a second lift support point; a second energy-absorbing bracket and a third energy-absorbing bracket, which are respectively arranged on both sides of the first sill reinforcement plate and are positioned opposite each other.

[0011] In conjunction with the first aspect, in one embodiment, the first sill reinforcement plate is provided with a first through hole, and the inner sill plate assembly is provided with a first energy-absorbing bracket on the side near the first sill reinforcement plate assembly, the first energy-absorbing bracket passing through the first through hole.

[0012] In conjunction with the first aspect, in one embodiment, the first sill reinforcement plate is provided with a second through hole, and a sixth energy-absorbing bracket is installed on the side of the sill reinforcement beam assembly near the first sill reinforcement plate assembly, the sixth energy-absorbing bracket passing through the second through hole.

[0013] In conjunction with the first aspect, in one embodiment, the inner sill plate assembly is provided with a fourth energy-absorbing bracket, and the sill reinforcement beam assembly is provided with a fifth energy-absorbing bracket. The fourth energy-absorbing bracket and the fifth energy-absorbing bracket are respectively located on both sides of the first sill reinforcement plate and are positioned opposite each other.

[0014] In conjunction with the first aspect, in one embodiment, the sill reinforcement assembly includes a second sill reinforcement assembly, the second sill reinforcement assembly including: a second sill reinforcement plate, the two ends of which are respectively provided with the first lift support point and the second lift support point, and the second sill reinforcement plate is provided with a mounting groove; and a sill reinforcement tube beam, which is fixed in the mounting groove.

[0015] Secondly, embodiments of this application provide a vehicle that includes the aforementioned vehicle body floor assembly structure.

[0016] The beneficial effects of the technical solutions provided in this application include:

[0017] This invention provides a vehicle body floor assembly assembly structure and vehicle. With the arrangement and assembly of components such as the rear floor crossbeam assembly, the rear floor front crossbeam welded assembly, and the floor side longitudinal beam assembly, the overlapping structure of the vehicle body floor assembly is optimized, a multi-cavity configuration is added to form a stress-bearing cavity, and stress-bearing nodes are formed inside and outside the vehicle body floor assembly, thereby forming a frame structure. Under the combined effect of the stress-bearing cavity, stress-bearing nodes, and frame structure, the collision safety, mechanical properties, and NVH performance of the vehicle body assembly are improved. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the interior structure of the rear floor assembly provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the external structure of the rear floor assembly provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram showing the relative positions of the components of the rear floor assembly provided in an embodiment of the present invention;

[0022] Figure 4 for Figure 1 Cross-sectional structural diagram of the BB position in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of the welded assembly of the rear floor and front crossbeam provided in an embodiment of the present invention;

[0024] Figure 6 A structural schematic diagram of the rear floor front crossbeam welded assembly provided in an embodiment of the present invention from another angle;

[0025] Figure 7 This is a schematic diagram of the structure of the rear floor beam assembly provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the rear floor front crossbeam welded assembly provided in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the rear floor lower panel provided in an embodiment of the present invention;

[0028] Figure 10 This is a structural schematic diagram of the through-beam assembly provided in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the vehicle floor assembly provided in an embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the overall structure of the floor edge longitudinal beam assembly provided in an embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram showing the relative positions of the floor edge longitudinal beam assembly components provided in an embodiment of the present invention;

[0032] Figure 14 This is a schematic diagram of the sill inner panel assembly provided in an embodiment of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of the first sill reinforcement plate assembly provided in an embodiment of the present invention;

[0034] Figure 16 This is a schematic diagram of the sill reinforcement beam assembly provided in an embodiment of the present invention;

[0035] Figure 17 A schematic diagram showing the relative positions of the energy-absorbing bracket and the first threshold reinforcement plate in a floor edge longitudinal beam assembly scheme provided in an embodiment of the present invention;

[0036] Figure 18 This is a schematic diagram of the structure of the second sill reinforcement plate assembly provided in an embodiment of the present invention;

[0037] Figure 19 This is a schematic diagram of the structure of the second sill reinforcement plate provided in an embodiment of the present invention;

[0038] Figure 20 A schematic diagram of the sill reinforcement tube beam provided in an embodiment of the present invention;

[0039] Figure 21 This is a schematic diagram of the overall structure of the floor edge longitudinal beam assembly from another angle, provided in an embodiment of the present invention.

[0040] Figure 22 for Figure 21 Cross-sectional structural diagram of Scheme 1 for the floor edge longitudinal beam assembly at the EE position;

[0041] Figure 23 for Figure 21 Cross-sectional structural diagram of Scheme 2 for the floor edge longitudinal beam assembly at the EE position;

[0042] Figure 24 for Figure 21 Cross-sectional structural diagram of Scheme 1 for the floor edge longitudinal beam assembly at position F1-F1;

[0043] Figure 25 for Figure 21 Cross-sectional structural diagram of the floor edge longitudinal beam assembly at position F2-F2, Scheme 1;

[0044] Figure 26 for Figure 21 Cross-sectional structural diagram of the floor edge longitudinal beam assembly at position F3-F3, Scheme 1;

[0045] Figure 27 These are the foundation cross-sectional structural diagrams of Scheme 1 and Scheme 2 for the floor edge longitudinal beam assembly provided in the embodiments of the present invention;

[0046] Figure 28 for Figure 21 Cross-sectional structural diagram of the floor edge longitudinal beam assembly at position F4-F4, Scheme 2;

[0047] Figure 29 for Figure 21 Cross-sectional structural diagram of the floor edge longitudinal beam assembly at position F5-F5, Scheme 1;

[0048] Figure 30 This is a schematic diagram of the vehicle floor assembly internal frame structure provided in an embodiment of the present invention;

[0049] Figure 31 This is a schematic diagram of the vehicle body floor assembly external frame structure provided in an embodiment of the present invention.

[0050] Numbering on the map:

[0051] 1. Rear floor crossbeam assembly; 1.1 Crossbeam; 1.2 Reinforcing plate; 1.3 Support plate; 2. Rear floor front crossbeam welded assembly; 2.1 First rear floor panel; 2.2 Through beam assembly; 2.2.1 Through plate; 2.2.2 Tube beam; 2.3 Rear floor lower panel; 3. Rear floor lower crossbeam assembly; 4. First connecting plate; 5. Second connecting plate; 6. Second rear floor panel; 7. Front floor panel; 8. Floor edge longitudinal beam assembly; 8.1 Sill inner panel assembly; 8.1.1 First energy-absorbing bracket; 8.1.2 Sill inner panel; 8.1.3 Fourth energy-absorbing bracket; 8.2 Sill reinforcing plate assembly; 8.2.1 First sill reinforcing plate assembly; 8.2.1.1 First through hole; 8.2. 1.2 Second through hole; 8.2.1.3 First lift support point; 8.2.1.4 Second energy-absorbing bracket; 8.2.1.5 Third energy-absorbing bracket; 8.2.1.6 First sill reinforcement plate; 8.2.1.7 Second lift support point; 8.2.2 Second sill reinforcement plate assembly; 8.2.2.1 Second sill reinforcement plate; 8.2.2.2 Sill reinforcement tube beam; 8.3 Sill reinforcement beam assembly; 8.3.1 Sill reinforcement beam; 8.3.2 Reinforcement beam; 8.3.3 Fifth energy-absorbing bracket; 8.3.4 Sixth energy-absorbing bracket; 8.4 Side outer panel; 10.1 First seat crossbeam; 10.2 Second seat crossbeam; 11 Seat slide rail; 12 Front crossbeam assembly. Detailed Implementation

[0052] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0053] This application provides a vehicle body floor assembly assembly structure and vehicle to improve the vehicle body assembly's collision safety, mechanical properties, and NVH performance. Figure 1This invention provides a vehicle floor assembly structure, which may include: a second rear floor panel 6; a rear floor crossbeam assembly 1 fixed to one end of the second rear floor panel 6; and a rear floor front crossbeam welded assembly 2 disposed below the rear floor crossbeam assembly 1. The rear floor front crossbeam welded assembly 2 includes: a first rear floor panel 2.1; a through beam assembly 2.2 installed inside the first rear floor panel 2.1; and a rear floor lower panel 2.3 installed below the first rear floor panel 2.1. The through beam assembly 2.2 is located between the first rear floor panel 2.1 and the rear floor lower panel 2.3, and cavities are formed between the first rear floor panel 2.1 and the through beam assembly 2.2, and between the through beam assembly 2.2 and the rear floor lower panel 2.3. With the addition of components such as the rear floor crossbeam assembly and the rear floor front crossbeam welded assembly, the overlapping structure of the vehicle floor assembly has been optimized, a multi-cavity configuration has been added to form a stress-bearing cavity, and the collision safety, mechanical and NVH performance of the vehicle assembly has been improved.

[0054] The through beam assembly 2.2 includes a through plate 2.2.1 and a tube beam 2.2.2, with the tube beam 2.2.2 mounted on the through plate 2.2.1. A rear floor lower crossbeam assembly 3 is provided on the second rear floor panel 6, and the rear floor lower crossbeam assembly 3 is connected and fixed to the rear floor front crossbeam welded assembly 2 via a first connecting plate 4 and a second connecting plate 5. The vehicle floor assembly assembly also includes a floor side longitudinal beam assembly 8, which includes a sill inner panel assembly 8.1 and a sill reinforcing beam assembly 8.3. A cavity is formed between the sill inner panel assembly 8.1 and the sill reinforcing beam assembly 8.3. A sill reinforcing plate assembly 8.2 is installed between the sill inner panel assembly 8.1 and the sill reinforcing beam assembly 8.3, with a first lift support point 8.2.1.3 and a second lift support point 8.2.1.7 at each end of the sill reinforcing plate assembly 8.2. The sill reinforcement plate assembly 8.2 includes a first sill reinforcement plate assembly 8.2.1, which comprises: a first sill reinforcement plate 8.2.1.6, with a first lift support point 8.2.1.3 and a second lift support point 8.2.1.7 at its two ends; a second energy-absorbing bracket 8.2.1.4 and a third energy-absorbing bracket 8.2.1.5, respectively arranged on both sides of the first sill reinforcement plate 8.2.1.6 and positioned opposite each other. A first through hole 8.2.1.1 is provided on the first sill reinforcement plate 8.2.1.6, and the first energy-absorbing bracket 8.1.1 is installed on the side of the inner sill plate assembly 8.1 near the first sill reinforcement plate assembly 8.2.1, passing through the first through hole 8.2.1.1. The first sill reinforcement plate 8.2.1.6 is provided with a second through hole 8.2.1.2. A sixth energy-absorbing bracket 8.3.4 is installed on the side of the sill reinforcement beam assembly 8.3 near the first sill reinforcement plate assembly 8.2.1. The sixth energy-absorbing bracket 8.3.4 passes through the second through hole 8.2.1.2. A fourth energy-absorbing bracket 8.1.3 is provided on the inner sill plate assembly 8.1. The fifth energy-absorbing bracket 8.3.3 is provided on the sill reinforcement beam assembly 8.3. The fourth energy-absorbing bracket 8.1.3 and the fifth energy-absorbing bracket 8.3.3 are located on both sides of the first sill reinforcement plate 8.2.1.6 and are positioned opposite each other. The sill reinforcement plate assembly 8.2 includes a second sill reinforcement plate assembly 8.2.2, which includes: a second sill reinforcement plate 8.2.2.1, with a first lift support point 8.2.1.3 and a second lift support point 8.2.1.7 respectively at both ends, and a mounting groove on the second sill reinforcement plate 8.2.2.1; and a sill reinforcement tube beam 8.2.2.2, which is fixed in the mounting groove.

[0055] See Figures 1 to 31As shown, this embodiment of the invention also provides a vehicle that includes the above-described vehicle body floor assembly structure. The vehicle may also implement any embodiment of the above-described vehicle body floor assembly structure, which will not be described in detail here.

[0056] Specifically, in combination Figure 1 , Figure 2 , Figure 4 and Figure 7 The rear floor assembly structure is designed with a rear floor crossbeam assembly 1 and a rear floor front crossbeam welded assembly 2. The rear floor crossbeam assembly 1 includes three parts: a crossbeam 1.1, a reinforcing plate 1.2, and a support plate 1.3. The rear floor crossbeam assembly 1 is arranged above the rear floor front crossbeam welded assembly 2.

[0057] Figure 2 This is a schematic diagram of the rear floor assembly's external structure. Figure 3 This is a schematic diagram showing the relative positions of the components in the rear floor assembly. (Combined with...) Figure 2 and Figure 3 The proposed technical solution for the vehicle's exterior rear floor assembly structure includes a rear floor lower crossbeam assembly 3, a first connecting plate 4, and a second connecting plate 5. The rear floor front crossbeam welded assembly 2 is connected and fixed to the rear floor lower crossbeam assembly 3 via the first connecting plate 4 and the second connecting plate 5. The rear floor front crossbeam welded assembly 2 in this proposed technical solution comprises three parts: a first rear floor panel 2.1, a through beam assembly 2.2, and a rear floor lower panel 2.3. The inclusion of the through beam assembly 2.2 and the rear floor lower panel 2.3 is one of the differences between the rear floor front crossbeam welded assembly 2 and related technical solutions.

[0058] Figure 5 and Figure 6 These are schematic diagrams of the welded assembly of the rear floor and front crossbeam from different perspectives. Figure 8 , Figure 9 and Figure 10 This is a schematic diagram of the welded assembly sub-components for the rear floor and front crossbeam. (Combined with...) Figure 5 , Figure 6 , Figure 8 , Figure 9 and Figure 10This diagram illustrates the overall structure and sub-component structural features of the rear floor front crossbeam welded assembly 2, specifically comprising three parts: the first rear floor panel 2.1, the through beam assembly 2.2, and the rear floor lower panel 2.3. The through beam assembly 2.2 includes a through plate 2.2.1 and a tubular beam 2.2.2. The diagram also clearly demonstrates the arrangement and assembly relationships between the various sub-components of the rear floor front crossbeam welded assembly 2. The structural design and assembly of the rear floor front crossbeam welded assembly 2 improve the collision safety performance, mechanical properties such as body rigidity, and NVH performance of the body assembly. When developing different models based on the same platform, due to differences in vehicle curb weight, different combination schemes are used for the rear floor front crossbeam welded assembly 2 and other modular platform components to achieve platformization, modularization, and scalability in model development, in order to meet the requirements of vehicle space layout, mechanical and collision safety performance. This optimizes the model development iteration cycle, controls model development costs, and improves model competitiveness.

[0059] Specifically, for the rear floor front crossbeam welding assembly 2, the first rear floor panel 2.1, the through beam assembly 2.2, the rear floor lower panel 2.3 and other components can be combined to achieve different combination schemes. For example, Scheme 1: The rear floor front crossbeam welded assembly 2 is composed of the first rear floor panel 2.1; Scheme 2: The rear floor front crossbeam welded assembly 2 is composed of the first rear floor panel 2.1 and the through beam assembly 2.2; Scheme 3: The rear floor front crossbeam welded assembly 2 is composed of the first rear floor panel 2.1 and the through plate 2.2.1; Scheme 4: The rear floor front crossbeam welded assembly 2 is composed of the first rear floor panel 2.1 and the rear floor lower panel 2.3; Scheme 5: The rear floor front crossbeam welded assembly 2 is composed of the first rear floor panel 2.1, the through beam assembly 2.2, and the rear floor lower panel 2.3; Scheme 6: The rear floor front crossbeam welded assembly 2 is composed of the first rear floor panel 2.1, the through plate 2.2.1, and the rear floor lower panel 2.3. This proposal demonstrates the above-mentioned combination schemes, but is not limited to them. Different combination schemes are adopted according to the spatial layout, mechanical and collision safety performance requirements of vehicle development to achieve platformization, modularization, and scalability in vehicle development. Figure 4 for Figure 1 The cross-sectional structural diagram at the BB position of the middle and rear floor assembly shows the relative positions and assembly relationships between components such as the rear floor crossbeam assembly 1, the rear floor front crossbeam welded assembly 2, the first connecting plate 4, the second rear floor panel 6, and the front floor panel 7.

[0060] This proposal improves the collision safety performance, mechanical properties such as stiffness, and NVH performance of the vehicle body assembly through the action of components such as the rear floor crossbeam assembly 1, the rear floor front crossbeam welded assembly 2, the rear floor lower crossbeam assembly 3, and the first connecting plate 4 and the second connecting plate 5. Figures 11-13This is a schematic diagram showing the relative positions of the floor side longitudinal beam assembly structure and its sub-components. The floor side longitudinal beam assembly 8, as part of the vehicle body floor assembly structure, makes a significant contribution to the vehicle body's collision safety performance, rigidity and other mechanical properties, as well as NVH performance. The floor side longitudinal beam assembly 8 includes the sill inner panel assembly 8.1, the sill reinforcement plate assembly 8.2, the sill reinforcement beam assembly 8.3, and the side outer panel 8.4. This proposal presents two design schemes for the sill reinforcement plate assembly 8.2: a first sill reinforcement plate assembly 8.2.1 and a second sill reinforcement plate assembly 8.2.2. The design of the sill reinforcement plate assembly 8.2 is one of the differences between this proposal and related technologies.

[0061] Figures 14-16 This is a schematic diagram of the sub-components of the floor edge longitudinal beam assembly. Figure 17 This is a schematic diagram showing the relative positions of the internal components of the floor edge longitudinal beam assembly. Figures 18-20 This is a schematic diagram of the overall structure and sub-components of the second sill reinforcement plate assembly. (Combined with...) Figures 14-20 There are two structural designs for the floor edge longitudinal beam assembly 8. Option 1: includes the inner sill plate assembly 8.1, the first sill reinforcement plate assembly 8.2.1, the sill reinforcement beam assembly 8.3, and the outer side panel 8.4. Option 2: includes the inner sill plate assembly 8.1, the second sill reinforcement plate assembly 8.2.2, the sill reinforcement beam assembly 8.3, and the outer side panel 8.4.

[0062] Figures 14-20 The document showcases the sill inner plate assembly 8.1, the first sill reinforcement plate assembly 8.2.1, the second sill reinforcement plate assembly 8.2.2, and the sill reinforcement beam assembly 8.3, illustrating the overall structure, sub-component structures, and the relative positions of the sub-components. In related technologies, the floor edge longitudinal beam assembly is designed with lift support points, which are reinforced and supported during vehicle lifting via front and rear support plates. For the design of the first sill reinforcement plate assembly 8.2.1, the first lift support point 8.2.1.3 and the second lift support point 8.2.1.7 are integrated into the structure of the first sill reinforcement plate 8.2.1.6, with vertical reinforcing ribs designed at these locations. Compared to related technologies, the overall design of the first sill reinforcement plate 8.2.1.6 further enhances the supporting and reinforcing effect during vehicle lifting.

[0063] Combination Figures 14-20The proposed floor edge longitudinal beam assembly 8, compared to related technologies, introduces a new sill reinforcement plate assembly 8.2. For the first sill reinforcement plate assembly 8.2.1, its sub-component, the first sill reinforcement plate 8.2.1.6, alters the cavity structure of the floor edge longitudinal beam assembly 8 and incorporates a first through-hole 8.2.1.1 and a second through-hole 8.2.1.2, providing channels for the first energy-absorbing bracket 8.1.1 and the sixth energy-absorbing bracket 8.3.4. Furthermore, for the first sill reinforcement plate assembly 8.2.1, a second energy-absorbing bracket 8.2.1.4 and a third energy-absorbing bracket 8.2.1.5 are arranged on the first sill reinforcement plate 8.2.1.6. The second sill reinforcement plate assembly 8.2.2 comprises two parts: the second sill reinforcement plate 8.2.2.1 and the sill reinforcement tube beam 8.2.2.2. The second sill reinforcement plate 8.2.2.1 is designed with an installation groove, and the sill reinforcement tube beam 8.2.2.2 is fixed to the second sill reinforcement plate 8.2.2.1, thus forming the second sill reinforcement plate assembly 8.2.2.

[0064] like Figures 14-16 The sill inner panel assembly 8.1 is designed with a first energy-absorbing bracket 8.1.1 and a fourth energy-absorbing bracket 8.1.3; the sill reinforcing beam assembly 8.3 is designed with a reinforcing beam 8.3.2, a fifth energy-absorbing bracket 8.3.3 and a sixth energy-absorbing bracket 8.3.4.

[0065] Figure 17 The diagram illustrates Scheme 1 of the floor edge longitudinal beam assembly, showing the relative positional relationship between the energy-absorbing bracket and the first threshold reinforcement plate 8.2.1.6. This can be achieved by adjusting the structural shape and dimensions of the energy-absorbing bracket; adjusting its placement (e.g., within the threshold inner plate 8.1.2, the first threshold reinforcement plate 8.2.1.6, and the threshold reinforcement beam 8.3.1); and adjusting the relative position of the energy-absorbing bracket and the first threshold reinforcement plate 8.2.1.6 (e.g., where the energy-absorbing bracket intersects with the first threshold reinforcement plate 8.2.1.6). Figure 17 The first energy-absorbing bracket (8.1.1) has a plane that is separate from the first sill reinforcement plate (8.2.1.6). Figure 17 The second energy-absorbing bracket (8.2.1.4) has its plane opposite to the first sill reinforcement plate (8.2.1.6). Figure 17 Fourth energy-absorbing bracket (8.1.3), etc., to improve the collision safety performance of the vehicle body assembly.

[0066] By arranging and assembling components such as the inner sill plate (8.1.2), the first sill reinforcement plate (8.2.1.6), the second sill reinforcement plate (8.2.2.1), the sill reinforcement beam (8.3.1), the outer side panel (8.4), the energy-absorbing bracket, the reinforcement beam, and the sill reinforcement tube beam, the collision safety performance, mechanical properties such as body rigidity, and NVH performance of the body assembly are improved. This proposal Figures 14-20In the diagram, the arrangement of the energy-absorbing bracket, reinforcing beam, and sill reinforcing tube beam is only a schematic diagram. During the vehicle development process, the arrangement and combination scheme of components such as the energy-absorbing bracket, reinforcing beam, and sill reinforcing tube beam need to be determined according to the vehicle's spatial layout, mechanical and collision safety performance requirements.

[0067] Figures 21-29 This is a schematic diagram of the cross-sectional structure of the floor edge longitudinal beam assembly. Corresponding to the EE section, E1-E1 represents the cross-sectional structure of Scheme 1 of the floor edge longitudinal beam assembly, and E2-E2 represents the cross-sectional structure of Scheme 2 of the floor edge longitudinal beam assembly. (Combined with...) Figure 22 E1-E1 cross-section structure and Figures 14-20 This allows for a clearer display of the relative positions of components such as the inner sill plate (8.1.2), the first sill reinforcement plate (8.2.1.6), the sill reinforcement beam (8.3.1), the outer side panel (8.4), the energy-absorbing bracket, and the reinforcement beam; combined with... Figure 23 E2-E2 cross-sectional structure and Figures 14-20 This allows for a clearer display of the relative positions of components such as the inner sill plate 8.1.2, the second sill reinforcement plate 8.2.2.1, the sill reinforcement beam 8.3.1, the outer side panel 8.4, and the sill reinforcement tube beam 8.2.2.2.

[0068] By examining the cross-sections at positions F1-F1, F2-F2, F3-F3, F4-F4, and F5-F5, the cross-sectional structures of Scheme 1 and Scheme 2 for the floor edge longitudinal beam assembly are obtained, namely the cross-sectional structures at F1-F1, F2-F2, F3-F3, F4.1-F4.1, F4.2-F4.2, and F5-F5, respectively. The related technical scheme has a cross-sectional structure consisting of two cavities. F4.1-F4.1 represents the basic cross-sections of Scheme 1 and Scheme 2 for the floor side longitudinal beam assembly 8. Scheme 1 for the floor side longitudinal beam assembly 8 adds through holes to the F4.1-F4.1 basic cross-section. The energy-absorbing bracket intersects with the first sill reinforcement plate 8.2.1.6, as shown in the F1-F1 and F5-F5 cross-section structures. The F1-F1 cross-section structure includes the reinforcement beam 8.3.2, forming a new cavity. The plane of the energy-absorbing bracket is separate from the first sill reinforcement plate 8.2.1.6, as shown in the F2-F2 cross-section structure, which also includes the reinforcement beam 8.3.2, increasing the number of cavities. The plane of the energy-absorbing bracket is opposite to the first sill reinforcement plate 8.2.1.6, as shown in the F3-F3 cross-section structure. The floor side longitudinal beam assembly 8 is equipped with a multi-cavity configuration, forming a stress-bearing cavity. Multiple combination schemes are available, improving the collision safety performance of the vehicle assembly, improving the mechanical properties such as the stiffness of the vehicle assembly, and improving the NVH performance of the vehicle assembly. Option 2 for the floor side longitudinal beam assembly 8 adds a sill reinforcement tube beam 8.2.2.2 to the basic section of F4.1-F4.1. Its cross-sectional structure is F4.2-F4.2. The cross-sectional structure of F4.2-F4.2 is based on the three-cavity configuration of the basic section of F4.1-F4.1, with the addition of three cavities of the sill reinforcement tube beam, which changes the spatial configuration of the three-cavity configuration of the basic section. By adjusting the number and configuration of cavities in Option 2 for the floor side longitudinal beam assembly 8, the collision safety, mechanical properties and NVH performance of the vehicle body assembly are improved. Figure 30 This is a schematic diagram of the vehicle's floor assembly internal frame structure. Figure 31 This is a schematic diagram of the vehicle body floor assembly's external frame structure. The interior vehicle body floor assembly comprises a G-frame structure consisting of components such as the rear floor crossbeam assembly 1, the rear floor front crossbeam welded assembly 2, the floor side longitudinal beam assembly 8, the first seat crossbeam 10.1, the second seat crossbeam 10.2, the seat slide rail 11, and the front bulkhead crossbeam assembly 12, including nodes G1-G8. The front bulkhead crossbeam assembly 12 can be located either inside or outside the vehicle. The exterior vehicle body floor assembly comprises an H-frame structure consisting of components such as the rear floor front crossbeam welded assembly 2, the rear floor lower crossbeam assembly 3, the first connecting plate 4, the second connecting plate 5, and the floor side longitudinal beam assembly 8, including external nodes H1-H16 and internal nodes H17-H21.

[0069] This proposal optimizes the overlapping structure of the vehicle floor assembly by arranging and assembling components such as the rear floor crossbeam assembly 1, the rear floor front crossbeam welded assembly 2, and the floor side longitudinal beam assembly 8. It adds a multi-cavity configuration, forming stress-bearing cavities and creating stress-bearing nodes inside and outside the vehicle floor assembly, thus forming a frame structure. The combined effect of the stress-bearing cavities, stress-bearing nodes, and frame structure improves the vehicle assembly's collision safety, mechanical properties, and NVH performance. Furthermore, by employing multiple combination schemes for components such as the rear floor front crossbeam welded assembly 2 and the floor side longitudinal beam assembly 8, and by adopting different assembly methods, it meets the requirements for space layout, process assembly, and overall vehicle performance during vehicle development, thereby facilitating the platformization, modularization, and scalability of vehicle development.

[0070] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0071] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A vehicle floor assembly structure, characterized in that, It includes: Second rear floor panel (6); The rear floor beam assembly (1) is fixed to one end of the second rear floor panel (6); A rear floor front crossbeam welding assembly (2), which is disposed below the rear floor crossbeam assembly (1), the rear floor front crossbeam welding assembly (2) comprising: - First rear floor panel (2.1); - Through beam assembly (2.2), which is installed on the inside of the first rear floor panel (2.1); - The rear floor lower panel (2.3) is installed below the first rear floor panel (2.1), the through beam assembly (2.2) is located between the first rear floor panel (2.1) and the rear floor lower panel (2.3), and cavities are formed between the first rear floor panel (2.1) and the through beam assembly (2.2), and between the through beam assembly (2.2) and the rear floor lower panel (2.3); The vehicle floor assembly structure also includes a floor side longitudinal beam assembly (8), which includes a sill inner panel assembly (8.1) and a sill reinforcing beam assembly (8.3). A cavity is formed between the sill inner panel assembly (8.1) and the sill reinforcing beam assembly (8.3). A sill reinforcing plate assembly (8.2) is installed between the sill inner panel assembly (8.1) and the sill reinforcing beam assembly (8.3). The two ends of the sill reinforcing plate assembly (8.2) are respectively provided with a first lift support point (8.2.1.3) and a second lift support point (8.2.1.7). The sill reinforcement plate assembly (8.2) includes a first sill reinforcement plate assembly (8.2.1), which includes: The first sill reinforcement plate (8.2.1.6) has a first lift support point (8.2.1.3) and a second lift support point (8.2.1.7) at its two ends respectively. The second energy-absorbing bracket (8.2.1.4) and the third energy-absorbing bracket (8.2.1.5) are respectively arranged on both sides of the first threshold reinforcement plate (8.2.1.6) and are positioned opposite each other; The first threshold reinforcement plate (8.2.1.6) is provided with a first through hole (8.2.1.1), and the inner threshold plate assembly (8.1) is provided with a first energy-absorbing bracket (8.1.1) on the side close to the first threshold reinforcement plate assembly (8.2.1). The first energy-absorbing bracket (8.1.1) passes through the first through hole (8.2.1.1).

2. The vehicle floor assembly structure as described in claim 1, characterized in that: The through beam assembly (2.2) includes a through plate (2.2.1) and a tube beam (2.2.2), the tube beam (2.2.2) being mounted on the through plate (2.2.1).

3. The vehicle floor assembly assembly structure as described in claim 1, characterized in that: The second rear floor panel (6) is provided with a rear floor lower crossbeam assembly (3), which is connected and fixed to the rear floor front crossbeam welding assembly (2) through a first connecting plate (4) and a second connecting plate (5).

4. The vehicle floor assembly assembly structure as described in claim 1, characterized in that: The first threshold reinforcement plate (8.2.1.6) is provided with a second through hole ( 8.2.1.2), a sixth energy-absorbing bracket (8.3.4) is installed on the side of the sill reinforcement beam assembly (8.3) near the first sill reinforcement plate assembly (8.2.1), and the sixth energy-absorbing bracket (8.3.4) passes through the second through hole ( 8.2.1.2）。 5. The vehicle floor assembly assembly structure as described in claim 1, characterized in that: The sill inner plate assembly (8.1) is provided with a fourth energy-absorbing bracket (8.1.3), and the sill reinforcing beam assembly (8.3) is provided with a fifth energy-absorbing bracket (8.3.3). The fourth energy-absorbing bracket (8.1.3) and the fifth energy-absorbing bracket (8.3.3) are respectively located on the first sill reinforcing plate (8.1). 8.2.1.6) on both sides, and in opposite positions.

6. The vehicle floor assembly assembly structure as described in claim 1, characterized in that: The sill reinforcement assembly (8.2) includes a second sill reinforcement assembly (8.2.2), which includes: The second sill reinforcement plate (8.2.2.1) has the first lifting machine support points at both ends. 8.2.1.3) and the second lift support point ( 8.2.1.7), the second threshold reinforcement plate (8.2.2.1) is provided with a mounting groove; The threshold reinforcement tube beam (8.2.2.2) is fixed in the mounting groove.

7. A vehicle, characterized in that, It includes the vehicle floor assembly structure as described in any one of claims 1 to 6.

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