Vehicle body structure and vehicle

Abstract

This application discloses a vehicle body structure and a vehicle. The vehicle body structure includes a rear floor beam frame, which includes two longitudinal beams spaced apart along a first direction. The rear floor beam frame also includes a front crossbeam and a rear crossbeam spaced apart along a second direction. Both ends of the front and rear crossbeams are connected to the two longitudinal beams to form a frame structure. The first and second directions are intersecting. A spring mounting portion is provided on one side of each longitudinal beam, and a support beam connects the spring mounting portion to the rear crossbeam. The support beam, longitudinal beams, and rear crossbeam together form a triangular support structure. Through the above solution, the vehicle body structure of this application can improve the rigidity of the rear floor beam frame and enhance the stability of the spring mounting structure.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a vehicle body structure and a vehicle. Background Technology

[0002] The rear floor frame is an important component of the vehicle's structural frame. Located beneath the rear seats, it supports them. The front of the rear floor frame connects to the sill beams and the front floor, while the rear connects to the rear extension beams and the spare tire well. Additionally, the rear air springs are typically mounted at the bottom of the rear floor frame.

[0003] As users' demands for vibration damping performance increase, higher requirements are placed on the structural design of traditional rear floor beams, as the stability of the existing rear air spring mounting structure on the rear floor beams is not high. Utility Model Content

[0004] The main technical problem addressed by this application is to provide a vehicle body structure and vehicle that can improve the rigidity of the rear floor beam and enhance the stability of the spring mounting structure.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: to provide a vehicle body structure, including a rear floor beam frame, the rear floor beam frame including two longitudinal beams spaced apart along a first direction, the rear floor beam frame also including a front crossbeam and a rear crossbeam spaced apart along a second direction, both ends of the front crossbeam and the rear crossbeam being connected to the two longitudinal beams respectively to form a frame structure, the first direction and the second direction being intersected; a spring mounting part is provided on one side of the longitudinal beam, and a support beam is connected between the spring mounting part and the rear crossbeam, the support beam, the longitudinal beam and the rear crossbeam together forming a triangular support structure.

[0006] The support beam includes multiple support plates extending in the same direction as the support beam, with the support plates spaced apart. These support plates form multiple similar triangular support cavities, further improving support performance and reducing chassis roll forces during driving.

[0007] The rear crossbeam includes a first cross plate and a second cross plate spaced apart along the second direction. The first cross plate is located on the side of the second cross plate near the front crossbeam. The support plate is connected to the first cross plate. Multiple first reinforcing ribs connect the first and second cross plates, and at least one connection point between a first reinforcing rib and the first cross plate overlaps with at least one connection point between the support plate and the first cross plate. The first reinforcing ribs further enhance the strength of the rear crossbeam while simultaneously transmitting and dispersing the impact force from the support beam to the rear crossbeam, thus improving the collision performance of the rear floor frame.

[0008] In this configuration, at least one of the first reinforcing ribs extends in the same direction as at least one of the support plates. This collinear arrangement ensures both oblique support for the spring mounting portion and rapid energy transfer to the rear crossbeam.

[0009] The spring mounting portion includes multiple protruding annular reinforcing ribs, which are concentric and spaced apart. The annular reinforcing ribs form a hollow structure, which is structurally stable, facilitates ventilation, improves corrosion resistance, and contributes to weight reduction.

[0010] The longitudinal beam has a C-pillar connection on the side away from the spring mounting part. The C-pillar connection includes a shock absorber mounting surface facing the longitudinal beam, and the shock absorber mounting surface has shock absorber mounting holes.

[0011] The normal of the shock absorber mounting surface is inclined outward along the first direction and biased towards the spring mounting portion.

[0012] The longitudinal beam includes a second reinforcing rib extending along the height direction, and the top end of the second reinforcing rib is connected to the C-column connection.

[0013] Wherein, along the first direction and toward another longitudinal beam, the thickness of the longitudinal beam gradually decreases in the height direction.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a vehicle including the body structure described in any of the technical solutions.

[0015] The beneficial effects of this application are as follows: Unlike existing technologies, the rear floor beam frame provided in this application features a support beam corresponding to the spring mounting portion, forming a stable triangular structure that together with the rear section of the longitudinal beam and the end of the rear cross beam. The spring mounting portion is located at the apex of this triangle and directly below the longitudinal beam. This structure possesses complete spatial rigidity, ensuring support for the spring. The triangular support structure helps improve the support of the spring mounting portion in the vehicle width direction Y, reducing chassis roll forces during driving, increasing vehicle body structural rigidity, and enhancing passenger comfort. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment of the rear floor beam frame of this application;

[0017] Figure 2 This is a bottom view schematic diagram of an embodiment of the rear floor beam frame of this application;

[0018] Figure 3 This is a side view schematic diagram of an embodiment of the rear floor beam frame of this application;

[0019] Figure 4 This application is Figure 2 Cross-sectional schematic view in the A-A direction.

[0020] Reference numerals in the drawing: 10, rear floor beam frame; 11, longitudinal beam; 111, second reinforcing rib; 12, front cross beam; 13, rear cross beam; 131, first transverse plate; 132, second transverse plate; 133, first reinforcing rib; 14, spring mounting portion; 141, annular reinforcing rib; 15, support beam; 151, support plate; 152, connecting plate; 16, C-column connection portion; 161, shock absorber mounting surface; 162, shock absorber mounting hole. Specific embodiments

[0021] To make the objectives, technical solutions and effects of this application clearer and more definite, the following further describes this application in detail with reference to the accompanying drawings and by way of examples. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0022] Refer to Figure 1 , Figure 1 , which is a three-dimensional schematic view of an embodiment of the rear floor beam frame of this application. The vehicle body structure 1 includes a rear floor beam frame 10. The rear floor beam frame 10 includes two longitudinal beams 11 arranged at intervals in the first direction. The rear floor beam frame 10 further includes a front cross beam 12 and a rear cross beam 13 arranged at intervals in the second direction. Both ends of the front cross beam 12 and the rear cross beam 13 are respectively connected to the two longitudinal beams 11 to form a frame structure, and the first direction and the second direction are arranged crosswise.

[0023] Specifically, the rear floor beam frame 10 is an integrally cast structure, and its material can be magnesium alloy or aluminum alloy. The first direction is the vehicle body width direction Y, and the second direction is the vehicle body front-rear direction X. The two longitudinal beams 11 extend along the vehicle body front-rear direction X, and the two longitudinal beams 11 are arranged at intervals in the vehicle body width direction Y. The front cross beam 12 and the rear cross beam 13 both extend along the Y direction and are arranged between the two longitudinal beams 11. The front cross beam 12 is connected to the front part of the longitudinal beam 11, and the rear cross beam 13 is connected to the rear part of the longitudinal beam 11, forming a "mouth"-shaped frame structure.

[0024] A spring mounting portion 14 is provided on one side of the longitudinal beam 11. A support beam 15 is connected between the spring mounting portion 14 and the rear cross beam 13. The support beam 15, the longitudinal beam 11 and the rear cross beam 13 enclose a triangular support structure.

[0025] Specifically, in the height direction Z, spring mounting parts 14 are located at the bottom of the longitudinal beam 11. There are two spring mounting parts 14, one at the bottom of each of the two longitudinal beams 11. The spring mounting parts 14 are used to install the rear air spring seat and are located on the longitudinal beam 11 near the rear crossbeam 13. The support beam 15 is inclinedly arranged within the "U"-shaped frame structure, forming a triangular structure with the rear section of the longitudinal beam 11 and the end of the rear crossbeam 13.

[0026] In this application, a support beam 15 is provided for the rear floor beam 10 corresponding to the spring mounting part 14, forming a stable triangular structure together with the rear section of the longitudinal beam 11 and the end of the rear cross beam 13. The spring mounting part 14 is located at the vertex of this triangle and directly below the longitudinal beam 11. The rear floor beam 10 with the above structure has complete spatial rigidity, which can ensure the support of the spring. The triangular support structure helps to improve the support of the spring mounting part 14 in the vehicle width direction Y, reduce chassis roll force during driving, improve vehicle body structural rigidity, and enhance passenger comfort.

[0027] Optionally, in one embodiment, the support beam 15 includes a plurality of support plates 151 extending in the same direction as the support beam 15, and the plurality of support plates 151 are spaced apart. Specifically, see [reference needed]. Figure 2 , Figure 2 This is a bottom view schematic diagram of an embodiment of the rear floor beam 10 of this application. Three support plates 151 are provided, arranged substantially parallel to each other. The ends of two support plates 151 are connected to the longitudinal beam 11 corresponding to the spring mounting part 14, and the end of the remaining support plate 151 is connected to the rear section of the longitudinal beam 11. Since each support plate 151, together with the longitudinal beam 11 and the rear cross beam 13, forms a triangular support cavity, the three support plates 151 form three similar triangular support cavities, further improving support performance and reducing chassis roll force during driving. In other embodiments, the number of support plates 151 can be two, four, or other numbers; this application does not specifically limit this number.

[0028] Furthermore, the support beam 15 also includes a connecting plate 152, which is connected above the multiple support plates 151 along the height direction Z. The connecting plate 152 covers the support plates 151, the longitudinal beam 11, and the rear cross beam 13, connecting the support beam 15 with the longitudinal beam 11 and the rear cross beam 13 as one unit, so that the triangular support cavity is a triangular groove with an opening facing downwards, further increasing the rigidity of the rear floor beam frame 10, improving the support force on the spring mounting part 14, and at the same time providing support for the seat above.

[0029] Optionally, please continue reading Figure 2In one embodiment, the rear crossbeam 13 includes a first cross plate 131 and a second cross plate 132 spaced apart along the X direction. Both the first cross plate 131 and the second cross plate 132 extend along the Y direction. The first cross plate 131 is disposed on the side of the second cross plate 132 near the front crossbeam 12. The ends of a plurality of support plates 151 away from the longitudinal beam 11 are all connected to the first cross plate 131. For example... Figure 2 As shown, the connection point between the support plate 151 closest to the longitudinal beam 11 and the first horizontal plate 131 is O1, and the connection point between the support plate 151 furthest from the longitudinal beam 11 and the first horizontal plate 131 is O2. Multiple first reinforcing ribs 133 connect the first horizontal plate 131 and the second horizontal plate 132. Specifically, in this embodiment, the multiple first reinforcing ribs 133 are connected end-to-end in a wavy or sawtooth pattern between the first horizontal plate 131 and the second horizontal plate 132. At least one connection point between a first reinforcing rib 133 and the first horizontal plate 131 overlaps with at least one connection point between a support plate 151 and the first horizontal plate 131. Specifically, one first reinforcing rib 133 connects to point O1, and two first reinforcing ribs 133 intersect at point O2. The first reinforcing ribs 133 can further enhance the strength of the rear horizontal beam 13 while also transmitting and dispersing the impact force from the support beam 15 to the rear horizontal beam 13, thus improving the collision performance of the rear floor beam frame 10.

[0030] In other embodiments, multiple first reinforcing ribs 133 may also be spaced apart, and the number of connection points between the first reinforcing ribs 133 and the support plate 151 may be other than that specified in this application.

[0031] Furthermore, at least one first reinforcing rib 133 extends in the same direction as at least one support plate 151. Specifically, as shown... Figure 2 As shown, in this embodiment, the support plate 151 closest to the longitudinal beam 11 and the first reinforcing rib 133 closest to the longitudinal beam 11 are arranged collinearly. This ensures oblique support for the spring mounting portion 14 and enables rapid energy transfer to the rear crossbeam 13. In other embodiments, the number of collinearly arranged first reinforcing ribs 133 and support plates 151 can also be greater.

[0032] Optionally, please continue reading Figure 2 In one embodiment, the spring mounting portion 14 includes a plurality of protruding annular reinforcing ribs 141, which are concentric and spaced apart. Specifically, the spring mounting portion 14 is cylindrical in shape, and the bottom surface of the spring mounting portion 14 is provided with a plurality of annular reinforcing ribs 141 protruding 3mm-8mm (e.g., 4mm, 5mm, etc.) from the bottom surface. The annular reinforcing ribs 141 form a hollow structure, which is relatively stable, facilitates ventilation, improves corrosion resistance, and helps to achieve lightweight design.

[0033] Optionally, in one embodiment, a C-pillar connection portion 16 is provided on the side of the longitudinal beam 11 away from the spring mounting portion 14. The C-pillar connection portion 16 includes a shock absorber mounting surface 161 facing the longitudinal beam 11, and a shock absorber mounting hole 162 is provided on the shock absorber mounting surface 161. Specifically, refer to the figures. Figure 3 This is a side view schematic diagram of an embodiment of the rear floor beam frame 10 of this application. The C-pillar connection portion 16 has an overall upward-opening groove structure for connecting to the bottom of the C-pillar and has high strength. A shock absorber mounting surface 161 is formed below the bottom surface of the groove structure, and shock absorber mounting holes 162 on the mounting surface are used to install the rear shock absorber slide. The shock absorber mounting surface 161 is located below the C-pillar connection portion 16, and the groove structure provides maximum support stiffness for the rear shock absorber slide.

[0034] Furthermore, the normal of the shock absorber mounting surface 161 is inclined outward along the first direction and biased towards the spring mounting portion 14. Specifically, the normal of the shock absorber mounting surface 161 is inclined downward and outward at 45°. This design can decompose the vertical impact force of the chassis into lateral and longitudinal forces through the inclined surface, avoiding stress concentration. At the same time, the inclined surface facilitates the upward mounting of the shock absorber.

[0035] Optionally, in one embodiment, the longitudinal beam 11 includes a second reinforcing rib 111 extending along the height direction, the top end of the second reinforcing rib 111 being connected to the C-pillar connection portion 16. Specifically, see [link to previous section]. Figure 3 Multiple second reinforcing ribs 111 are provided, and the multiple second reinforcing ribs 111 are distributed at intervals along the X direction. The second reinforcing ribs 111 connect to the longitudinal beam 11 along the height direction, thereby improving the longitudinal support for the C-column connection 16. Optionally, transverse and diagonal ribs can also be provided between two adjacent second reinforcing ribs 111 to further improve the stability stiffness of the second reinforcing ribs 111.

[0036] Optionally, in one embodiment, the thickness of the longitudinal beam 11 gradually decreases in the height direction along the first direction and toward another longitudinal beam 11. Specifically, see [reference needed]. Figure 4 , Figure 4 This application is Figure 2 A cross-sectional view along the AA direction. The cross-section of the longitudinal beam 11 is trapezoidal, and the height of the trapezoid gradually decreases along the Y direction. The overall structure has good bending and torsion properties, providing more stable support for the rear shock absorber slide column in the height direction.

[0037] This application also provides a vehicle including the body structure of any of the above embodiments. The vehicle provided in this application can be a pure gasoline vehicle, a hybrid electric vehicle, or a pure electric vehicle, and is also applicable to any other type of vehicle, such as a sports utility vehicle (SUV), off-road vehicle, MPV, etc.

[0038] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A vehicle body structure characterized by comprising: Including the rear floor beams, The rear floor beam frame includes two longitudinal beams spaced apart along a first direction, and a front crossbeam and a rear crossbeam spaced apart along a second direction. Both ends of the front crossbeam and the rear crossbeam are connected to the two longitudinal beams respectively to form a frame structure. The first direction and the second direction are intersected. A spring mounting part is provided on one side of the longitudinal beam, and a support beam is connected between the spring mounting part and the rear crossbeam. The support beam, the longitudinal beam and the rear crossbeam together form a triangular support structure.

2. The vehicle body structure according to claim 1, characterized in that, The support beam includes multiple support plates extending in the same direction as the support beam, with the multiple support plates spaced apart.

3. The vehicle body structure according to claim 2, characterized in that, The rear crossbeam includes a first cross plate and a second cross plate spaced apart along the second direction. The first cross plate is disposed on the side of the second cross plate near the front crossbeam, and the support plate is connected to the first cross plate. A plurality of first reinforcing ribs are connected between the first horizontal plate and the second horizontal plate, and at least one connection point of the first reinforcing rib to the first horizontal plate overlaps with at least one connection point of the support plate to the first horizontal plate.

4. The vehicle body structure according to claim 3, characterized in that, At least one of the first reinforcing ribs is aligned with the extension direction of at least one of the support plates.

5. The vehicle body structure according to any one of claims 1-4, characterized in that, The spring mounting portion includes multiple protruding annular reinforcing ribs, which are concentric and spaced apart.

6. The vehicle body structure according to any one of claims 1-4, characterized in that, The longitudinal beam has a C-pillar connection on the side away from the spring mounting part. The C-pillar connection includes a shock absorber mounting surface facing the longitudinal beam, and the shock absorber mounting surface has shock absorber mounting holes.

7. The vehicle body structure according to claim 6, characterized in that, The normal of the shock absorber mounting surface is inclined outward along the first direction and biased towards the spring mounting part.

8. The vehicle body structure according to claim 6, characterized in that, The longitudinal beam includes a second reinforcing rib extending along the height direction, and the top end of the second reinforcing rib is connected to the C-column connection.

9. The vehicle body structure according to claim 1, characterized in that, Along the first direction and toward another longitudinal beam, the thickness of the longitudinal beam gradually decreases in the height direction.

10. A vehicle characterized by comprising: Includes the vehicle body structure as described in any one of claims 1-9.

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