Stiffener, vehicle body frame, and vehicle

Abstract

The application provides a reinforcement, a vehicle body frame and a vehicle. The reinforcement comprises a main body part and a flange part. The main body part comprises a first tube segment and a second tube segment. The second tube segment has a bending degree greater than that of the first tube segment. The flange part comprises a first flange segment and a second flange segment. The first flange segment is arranged outside the first tube segment and extends along the length direction of the first tube segment. The second flange segment is at least partially arranged outside the second tube segment and extends along the extension direction of the second tube segment. The second flange segment comprises a first gradual change part, and the width of the first gradual change part in the circumferential direction of the second tube segment gradually increases from the direction of the first flange segment to the second flange segment.

Description

Technical Field

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

[0002] As one of the core structures for vehicle load-bearing and safety protection, the sidewall of the vehicle body directly affects the vehicle's torsional rigidity, side impact protection performance, and driving stability. The upper A-pillar reinforcement, as the intermediate component connecting the lower A-pillar reinforcement assembly and the B-pillar reinforcement assembly, has a structural design that is crucial to the overall sidewall reinforcement effect.

[0003] To facilitate connection with the side panel, existing A-pillar reinforcements often have flanges on the outside of the tubular beam. When the flanges extend to the curved section of the tubular beam, they are easily subjected to compression, resulting in structural defects and stress concentration. Summary of the Invention

[0004] This application provides a reinforcement component, a vehicle body frame, and a vehicle.

[0005] A first aspect of this application provides a reinforcing member, the reinforcing member comprising: The main body includes a first pipe segment and a second pipe segment connected together; the degree of curvature of the second pipe segment is greater than that of the first pipe segment. The flange includes a first flange section and a second flange section that are connected; the first flange section is disposed on the outside of the first pipe section and extends along the length direction of the first pipe section; the second flange section is at least partially disposed on the outside of the second pipe section and extends along the extension direction of the second pipe section. The second flange segment includes a first transition section located at the end of the second flange segment away from the first flange segment. The width of the first transition section gradually increases in the circumferential direction of the second flange segment from the first flange segment to the second flange segment.

[0006] In some embodiments, the height of the first tapering portion in the radial direction of the second pipe segment gradually decreases from the direction of the first flange segment to the direction of the second flange segment.

[0007] In some embodiments, the height of the first gradient portion decreases from a first height to a second height, where the first height is the maximum height of the first gradient portion.

[0008] In some embodiments, the first height is one-third to two-thirds of the maximum height of the second flange section; the second height is zero.

[0009] In some embodiments, the second flange segment further includes a second gradient portion, which connects the first flange segment and the first gradient portion; from the direction from the first flange segment to the second flange segment, the width of the second gradient portion in the circumferential direction of the second pipe segment remains unchanged, and the height of the second gradient portion in the radial direction of the second pipe segment gradually decreases.

[0010] In some embodiments, the total length of the second flange segment along the extension direction of the second pipe segment accounts for one-quarter to two-fifths of the total length of the second pipe segment; the length of the first transition portion along the extension direction of the second flange segment accounts for two-fifths to three-fifths of the total length of the second flange segment.

[0011] In some embodiments, the flange portion includes a first side and a second side, one end of the first side is connected to the main body portion, one end of the second side is connected to the main body portion, and the other end of the first side is connected to the other end of the second side.

[0012] In some embodiments, the thickness of the first side and the second side are equal, and are equal to the wall thickness of the main body.

[0013] In some embodiments, the main body further includes a third pipe segment connected to the second pipe segment, the third pipe segment being located on the side of the second pipe segment away from the first pipe segment; the degree of curvature of the second pipe segment is greater than the degree of curvature of the third pipe segment; The main body and the flange are integrally formed; along the radial direction of the main body, the cross-sectional area of ​​the first pipe section is smaller than that of the second pipe section, and the cross-sectional area of ​​the second pipe section is smaller than that of the third pipe section.

[0014] In some embodiments, along the length direction of the main body, the wall thickness of some regions of the main body is not equal to that of other regions; or, along the length direction of the main body, the wall thickness of all regions of the main body is equal.

[0015] In some embodiments, the main body includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall; the first sidewall is located on the side of the main body away from the driver's cab, the second sidewall is located on the side of the main body facing the driver's cab, the third sidewall is located on the side of the main body facing the roof, and the fourth sidewall is located on the side of the main body facing the floor; the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall are connected end to end to form a closed loop structure; At least one of the first sidewall, the third sidewall, and the fourth sidewall is used to connect to the outer side panel.

[0016] A second aspect of this application provides a vehicle frame, the vehicle frame including a side outer panel and a side reinforcement structure, the side reinforcement structure being located inside the side outer panel; The side wall reinforcement structure includes the aforementioned reinforcement member, which is an upper A-pillar reinforcement member; the side wall reinforcement structure also includes a lower A-pillar reinforcement assembly and a B-pillar reinforcement assembly; The first pipe segment is connected to the lower A-pillar reinforcement assembly; the second pipe segment is located between the lower A-pillar reinforcement assembly and the B-pillar reinforcement assembly; when the upper A-pillar reinforcement includes the third pipe segment, the third pipe segment is connected to the B-pillar reinforcement assembly.

[0017] A third aspect of this application provides a vehicle comprising the aforementioned body frame.

[0018] The reinforcement provided in this application embodiment, when the load on the second flange section is transferred to the main body section via the first transition section, will not be concentrated on a certain line or a certain point, but will be evenly diffused along the gradually decreasing and widening fan-shaped area. Finally, when the height of the first transition section drops to zero until it is flush with the outer surface of the second pipe section, a transition connection without steps or abrupt changes has been achieved between the flange section and the main body section, which helps to eliminate stress concentration and avoid defects such as wrinkling or cracking at the end of the flange section.

[0019] 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

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0021] Figure 1 A front view of a vehicle frame provided in an embodiment of this application; Figure 2 A rear view of a vehicle frame provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a reinforcing member provided in an embodiment of this application; Figure 4 for Figure 3 The illustrated embodiment provides a partial structural diagram of the reinforcing member; Figure 5 for Figure 4 The illustrated embodiment provides a bottom view of the reinforcement. Figure 6 for Figure 5 A partial enlarged view of region A of the reinforcement provided in the illustrated embodiment; Figure 7 for Figure 4 A partial enlarged view of region B of the reinforcement provided in the illustrated embodiment; Figure 8 for Figure 1 The illustrated embodiment provides a cross-sectional view of the vehicle frame cut along the BB direction; Figure 9 for Figure 1 The illustrated embodiment provides a cross-sectional view of the vehicle frame cut along the CC direction; Figure 10 for Figure 8 A partial enlarged view of region D in the cross-sectional view provided in the illustrated embodiment. Detailed Implementation

[0022] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0023] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0024] The reinforcement, vehicle body frame, and vehicle according to embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can complement or combine with each other.

[0025] This application provides a reinforcing member, such as... Figure 3 As shown, the reinforcing member 100 includes a main body 10 and a flange 20.

[0026] The main body 10 includes a first pipe section 11 and a second pipe section 12 connected together, wherein the degree of curvature of the second pipe section 12 is greater than that of the first pipe section 11. The first pipe section 11 can be a straight pipe section without curvature or a bent pipe section with a small degree of curvature, and the second pipe section can be a bent pipe section with a large degree of curvature.

[0027] like Figure 3 and Figure 4As shown, the flange portion 20 includes a first flange section 21 and a second flange section 22 that are connected. The first flange section 21 is disposed on the outside of the first pipe section 11 and extends along the length direction of the first pipe section 11. The second flange section 22 is at least partially disposed on the outside of the second pipe section 12 and extends along the extension direction of the second pipe section 12. One end of the second flange section 22 may be located on the outside of the first pipe section 11, and the other end may extend to the outside of the second pipe section 12. Of course, the second flange section 22 may also be entirely located on the outside of the second pipe section 12.

[0028] Among them, such as Figures 3 to 5 As shown, the second flange section 22 includes a first transition section 221, which is located at the end of the second flange section 22 away from the first flange section 21. In the direction from the first flange section 21 to the second flange section 22, the width of the first transition section 221 gradually increases in the circumferential direction of the second pipe section 12.

[0029] In the circumferential direction of the second pipe section 12, the width of the first tapering section 221 gradually increases, thereby gradually expanding the coverage area of ​​the second flange section 22 in the circumferential direction of the second pipe section 12. For example... Figure 6 As shown, the first gradient portion 221 includes a first end 221a facing the first flange section 21 and a second end 221b away from the first flange section 21. The width of the first end 221a is smaller than the width of the second end 221b. From the first end 221a to the second end 221b, the first gradient portion 221 gradually widens in the shape of a trumpet.

[0030] Since the first pipe section 11 or the second pipe section 12 may be an arc-shaped bend, when the flange is located in the bend, the material will be subjected to both circumferential and axial compression during the bending process. If the flange edge maintains a constant width within the bend area, the flange material will develop defects such as wrinkles or even cracks due to the inability to release compressive stress.

[0031] The reinforcing member 100 provided in this application embodiment has a first gradient part 221 with a gradually increasing circumferential width, which can solve the problem of easy extrusion and wrinkling of the flange and stress concentration at the arc-shaped second pipe section 12. The first gradient part 221 gradually increases in width in the circumferential direction, so that the distribution range of the second flange section 22 in the circumferential direction of the second pipe section 12 gradually expands, thereby dispersing the extrusion stress that was originally concentrated in a narrow area to a wider fan-shaped area.

[0032] The above design ensures that when the load on the second flange section 22 is transmitted to the main body section 10 via the first transition section 221, it will not be concentrated on a certain line or a certain point, but will be evenly diffused along the gradually widening fan-shaped area. This helps to eliminate stress concentration and avoid defects such as wrinkling or cracking at the end of the flange section.

[0033] In one embodiment, such as Figure 4 and Figure 7 As shown, from the direction of the first flange section 21 to the second flange section 22, the height of the first transition section 221 in the radial direction of the second pipe section 12 gradually decreases until the outer surface of the first transition section 221 in the radial direction of the second pipe section 12 is flush with the outer surface of the second pipe section 12.

[0034] The first transition section 221 of the second flange section 22 gradually changes in height along the direction from the first flange section 21 to the second flange section 22, which can achieve a smooth transition at the connection between the end of the flange section 20 and the main body section 10.

[0035] In the radial direction of the second pipe section 12, the height of the first transition section 221 gradually decreases, causing the bulge of the second flange section 22 relative to the outer wall of the second pipe section 12 to gradually decrease. The width and height of the first transition section 221 change in tandem, allowing the end of the second flange section 22 to smoothly connect to the main body 10. The gradual decrease in the radial height of the first transition section 221 gradually reduces the volume of material involved in the extrusion deformation of the first transition section 221, preventing material accumulation. Finally, when the height of the first transition section 221 drops to be flush with the outer surface of the second pipe section 12, a seamless, stepless transition connection can be achieved between the flange and the main body.

[0036] In one embodiment, the height of the first gradient portion 221 decreases from a first height h1 to a second height h2, where the first height h1 is the maximum height of the first gradient portion 221.

[0037] Furthermore, the first height h1 is one-third to two-thirds of the maximum height of the second flange section 22, and the second height h2 is zero. Limiting the first height h1 to one-third to two-thirds of the maximum height of the second flange section 22 ensures that the starting point of the first transition section 221 has sufficient cross-sectional height and structural rigidity. The second height h2 being zero enables a smooth connection between the flange section and the main body section, allowing the end of the first transition section 221 to transition into a state integrated with the pipe section.

[0038] In one embodiment, such as Figures 3 to 5 As shown, the second flange section 22 also includes a second transition section 222, which connects the first flange section 21 and the first transition section 221. From the first flange section 21 to the second flange section 22, the width of the second transition section 222 in the circumferential direction of the second pipe section 12 remains constant, while the height of the second transition section 222 in the radial direction of the second pipe section 12 gradually decreases.

[0039] The circumferential width of the second gradient section 222 remains constant, ensuring its structural stiffness and cross-sectional deformation resistance. This mitigates, to some extent, the reduction in structural strength caused by the gradual decrease in radial height of the second flange section 22, while maintaining the continuity of the force transmission path at the connection between the first flange section 21 and the second flange section 22. The radial height of the second gradient section 222 gradually decreases, achieving a smooth transition in stiffness and structural constraints between the first flange section 21 and the first gradient section 221, avoiding stress concentration, and further improving the structural integrity and load-bearing reliability of the reinforcement.

[0040] It is understandable that, in order to ensure a smooth transition at the connection between the various structures, the end of the second gradient section 222 that connects to the first flange section 21 is at the same height as the end of the first flange section 21 that faces the second flange section 22, and the end of the second gradient section 222 that connects to the first gradient section 221 is at the same height as the end of the first gradient section 221 that faces the second gradient section 222.

[0041] In one embodiment, the total length of the second flange section 22 extending along the direction of the second pipe section 12 accounts for one-quarter to two-fifths of the total length of the second pipe section 12. The length of the first transition section 221 extending along the direction of the second flange section 22 accounts for two-fifths to three-fifths of the total length of the second flange section 22.

[0042] Setting the length of the second flange section 22 to be between one-quarter and two-fifths of the total length of the second pipe section 12 ensures that the flange 20 has sufficient connection and fitting length in the bending area, providing stable support for the connection between the reinforcement and the side panel, while avoiding problems such as increased risk of extrusion deformation and increased molding difficulty caused by excessive length of the second flange section 22.

[0043] Setting the length of the first transition section 221 to be two-fifths to three-fifths of the total length of the second flange section 22 provides sufficient transition space for the flange to widen in the circumferential direction and reduce its height in the radial direction, ensuring a smooth and continuous transition process, avoiding stress abrupt changes caused by an excessively short transition section, and reducing structural defects such as wrinkling and deformation.

[0044] In one embodiment, the reinforcement 100 is an upper reinforcement of the A-pillar, the first pipe section 11 is used to connect to the lower reinforcement assembly 200 of the A-pillar, and the second pipe section 12 is located between the lower reinforcement assembly 200 of the A-pillar and the reinforcement assembly 300 of the B-pillar.

[0045] The main body 10 also includes a third pipe section 13 connected to the second pipe section 12. The third pipe section 13 is located on the side of the second pipe section 12 away from the first pipe section 11. The degree of curvature of the second pipe section 12 is greater than that of the third pipe section 13. The third pipe section 13 is used to connect to the B-pillar reinforcement assembly 300. The third pipe section 13 can be a straight pipe section without curvature or a bent pipe section with a small degree of curvature.

[0046] In another embodiment, a first pipe segment is used to connect to the B-pillar reinforcement assembly 300, and a second pipe segment is located between the A-pillar lower reinforcement assembly 200 and the B-pillar reinforcement assembly 300. The main body also includes a third pipe segment connected to the second pipe segment, the third pipe segment being located on the side of the second pipe segment away from the first pipe segment, the second pipe segment having a greater degree of curvature than the third pipe segment, and the third pipe segment being used to connect to the A-pillar lower reinforcement assembly 200.

[0047] The difference between the two embodiments described above lies in the interchange of the connection objects of the pipe sections at both ends of the reinforcing member 100, corresponding to two different arrangement forms: the first form is that the flange portion 20 is positioned on the outside of the pipe section near the A-pillar lower reinforcing member assembly 200, and the second form is that the flange portion 20 is positioned on the outside of the pipe section near the B-pillar reinforcing member assembly 300. Furthermore, this application can be extended to form a third implementation method, in which flange portions can be simultaneously provided on the outside of both the pipe section connecting the A-pillar lower reinforcing member assembly 200 and the pipe section connecting the B-pillar reinforcing member assembly. Through various flange arrangement schemes, the installation requirements of different vehicle side panel structures can be adapted, thereby improving the structural versatility and assembly adaptability of the reinforcing member.

[0048] In one embodiment, such as Figure 3 As shown, the main body 10 and the flange 20 are integrally formed structures. Along the radial direction of the main body 10, the cross-sectional area of ​​the first pipe section 11 is smaller than the cross-sectional area of ​​the second pipe section 12, and the cross-sectional area of ​​the second pipe section 12 is smaller than the cross-sectional area of ​​the third pipe section 13.

[0049] The main body 10 and the flange 20 are integrally formed, which eliminates weak points such as splicing gaps and welds between the main body 10 and the flange 20, and avoids stress concentration at the connection. The first pipe section 11 has a relatively small load, and its smaller cross-section enables structural lightweighting and spatial adaptation. The third pipe section 13 connects to the B-pillar reinforcement assembly and bears a larger load and impact. Its larger cross-section can effectively improve the load-bearing stiffness and deformation resistance of the third pipe section 13. The second pipe section 12 is used to achieve a smooth transition between the first pipe section 11 and the third pipe section 13, which can avoid rigidity changes caused by abrupt changes in the cross-sectional dimensions of the main body and further optimize the stress distribution of the reinforcement.

[0050] Specifically, the reinforcing member 100 is a thermally expanded tubing, and the main body 10 and the flange 20 are integrally formed. Thermally expanded tubing is a type of tubing formed through a hot gas expansion process, which has relatively high strength. The specific forming process involves using high-pressure gas within a mold to expand the heated metal tubing to form the shape.

[0051] In one embodiment, along the length of the main body 10, the wall thickness of some areas of the main body 10 is not equal to that of other areas. For example, in areas of the main body 10 subjected to greater stress, such as the connection points between the main body 10 and other components, a larger wall thickness can be provided to enhance the local structural strength; while in areas subjected to less stress, the wall thickness can be appropriately reduced to reduce the overall weight.

[0052] The variable thickness can be TRB (Tailored Rolled Blanks) unequal thickness or TWB (Tailored Welded Blanks) laser-welded plate. Specifically, in the forming process, the plate is rolled or laser-welded to obtain a plate with a variable wall thickness. The plate with a variable wall thickness is then wound and welded to obtain a pipe with a variable wall thickness. After multiple processes, the aforementioned variable wall thickness main body 10 is obtained.

[0053] In another embodiment, the wall thickness of all regions of the main body 10 is equal along its length. This simplifies the structural design of the main body 10 and reduces manufacturing costs.

[0054] In one embodiment, such as Figure 8 and Figure 9 As shown, the main body 10 includes a first side wall 101, a second side wall 102, a third side wall 103, and a fourth side wall 104. The first side wall 101 is located on the side of the main body 10 away from the driver's cab, the second side wall 102 is located on the side of the main body 10 facing the driver's cab, the third side wall 103 is located on the side of the main body 10 facing the roof, and the fourth side wall 104 is located on the side of the main body 10 facing the floor. The first side wall 101, the second side wall 102, the third side wall 103, and the fourth side wall 104 are connected end-to-end to form a closed loop structure. At least one of the first side wall 101, the third side wall 103, and the fourth side wall 104 is used to connect to the outer side panel 400.

[0055] The closed-loop sidewall structure of the main body 10 enhances its structural rigidity and torsional resistance. The closed-loop section effectively disperses various loads generated during vehicle movement and collisions, preventing excessive local stress that could lead to deformation and failure. Utilizing multiple sidewalls as selectable connection surfaces with the side panel allows for flexible selection of connection positions based on the actual spatial layout and stress requirements of the vehicle body, improving the adaptability and flexibility of the reinforcement components and the side panel assembly.

[0056] Specifically, such as Figure 8 As shown, in the sections where flange portions 20 are provided in the first pipe section 11 and the second pipe section 12, the ends where the second side wall 102 and the fourth side wall 104 of the main body 10 connect extend outward to form flange portions 20. At this time, the third side wall 103 can be used to connect with the outer side panel 400, and the flange portions 20 can be used to connect with the outer side panel 400. Alternatively, as... Figure 9 As shown, in the sections of the third pipe section 13 and the second pipe section 12 where the flange portion 20 is not provided, the third side wall 103 and the fourth side wall 104 of the main body can be connected to the outer side panel 400. In other embodiments, any two or all of the first side wall 101, the third side wall 103, and the fourth side wall 104 can be connected to the outer side panel 400.

[0057] In one embodiment, the flange portion 20 has multiple welding points, which are evenly spaced along the extension direction of the flange portion 20. The flange portion 20 is welded to the outer side panel 400 at each welding point. The evenly distributed welding points avoid the defects of excessively dense or sparse local welding points, preventing both thermal deformation and stress concentration of the flange edge caused by dense welding and insufficient connection strength caused by sparse welding.

[0058] In one embodiment, such as Figure 8 and Figure 10 As shown, the flange portion 20 includes a first side 201 and a second side 202. One end of the first side 201 is connected to the main body portion 10, one end of the second side 202 is connected to the main body portion 10, and the other end of the first side 201 is connected to the other end of the second side 202.

[0059] The aforementioned split-side structure can be fabricated using a hot-expansion process. Specifically, after pretreatment, the tubing is placed in a mold and hot-expansion is achieved by introducing high-pressure gas. This causes the tubing to expand under gas pressure, fitting snugly against the inner wall of the mold cavity, directly forming the main body 10 and flange 20 without welding, thus improving the quality of the formed structure. Furthermore, the double-layer structure of the first split side 201 and the second split side 202 effectively doubles the thickness of the flange 20, significantly improving its bending resistance compared to a single-layer flange. In a side collision, the flange 20 can withstand greater impact without tearing, thus largely preventing a decrease in the overall load-bearing capacity of the A-pillar due to connection failure.

[0060] Furthermore, the thicknesses of the first side 201 and the second side 202 are equal and equal to the wall thickness of the first pipe segment 11. When the thickness of the side is consistent with the wall thickness of the pipe segment, it is not necessary to set differentiated thickness forming areas in the hot gas expansion mold, which reduces the complexity of mold design and the difficulty of adjusting process parameters.

[0061] This application also provides a vehicle body frame, such as... Figure 1 and Figure 2 As shown, the vehicle frame includes a side outer panel 400 and a side reinforcement structure, with the side reinforcement structure located inside the side outer panel.

[0062] The side reinforcement structure includes the aforementioned reinforcement member 100, which is an upper reinforcement member on the A-pillar. The side reinforcement structure also includes a lower A-pillar reinforcement assembly 200 and a B-pillar reinforcement assembly 300. The reinforcement member 100 is connected to both the lower A-pillar reinforcement assembly 200 and the B-pillar reinforcement assembly 300.

[0063] Specifically, the first pipe section 11 is connected to the A-pillar lower reinforcement assembly 200, the second pipe section 12 is located between the A-pillar lower reinforcement assembly 200 and the B-pillar reinforcement assembly 300, and when the A-pillar upper reinforcement includes the third pipe section 13, the third pipe section 13 is connected to the B-pillar reinforcement assembly 300.

[0064] This application embodiment also provides a vehicle, which includes the above-described body frame. When the vehicle collides, the reinforcement 100, the A-pillar lower reinforcement assembly 200, and the B-pillar reinforcement assembly 300 can work together to reasonably disperse and transfer collision energy, reduce cabin deformation, and protect the integrity of the cabin.

[0065] The vehicles referred to in this application embodiment can be private cars, such as sedans, SUVs, MPVs, or pickup trucks. Vehicles can also be commercial vehicles, such as vans, buses, or trucks. Vehicles can be either gasoline-powered or new energy vehicles. When a vehicle is a new energy vehicle, it can be a hybrid vehicle or a pure electric vehicle.

[0066] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A reinforcing member, characterized in that, The reinforcing member (100) includes: The main body (10) includes a first pipe segment (11) and a second pipe segment (12) connected together; the degree of curvature of the second pipe segment (12) is greater than that of the first pipe segment (11); The flange portion (20) includes a first flange section (21) and a second flange section (22) connected together; the first flange section (21) is disposed on the outside of the first pipe section (11) and extends along the length direction of the first pipe section (11); the second flange section (22) is at least partially disposed on the outside of the second pipe section (12) and extends along the extension direction of the second pipe section (12); The second flange segment (22) includes a first transition portion (221), which is located at the end of the second flange segment (22) away from the first flange segment (21). The width of the first transition portion (221) gradually increases in the circumferential direction of the second pipe segment (12) from the first flange segment (21) to the second flange segment (22).

2. The reinforcing member according to claim 1, characterized in that, From the direction of the first flange section (21) to the second flange section (22), the height of the first gradient section (221) in the radial direction of the second pipe section (12) gradually decreases until the outer surface of the first gradient section (221) in the radial direction of the second pipe section (12) is flush with the outer surface of the second pipe section (12).

3. The reinforcing member according to claim 2, characterized in that, The height of the first gradient section (221) decreases from a first height to a second height, where the first height is the maximum height of the first gradient section (221).

4. The reinforcing member according to claim 3, characterized in that, The first height is one-third to two-thirds of the maximum height of the second flange section (22); the second height is zero.

5. The reinforcing member according to claim 1, characterized in that, The second flange section (22) further includes a second transition section (222), which connects the first flange section (21) and the first transition section (221). From the first flange section (21) to the second flange section (22), the width of the second transition section (222) in the circumferential direction of the second pipe section (12) remains unchanged, and the height of the second transition section (222) in the radial direction of the second pipe section (12) gradually decreases.

6. The reinforcing member according to claim 5, characterized in that, The total length of the second flange section (22) along the extension direction of the second pipe section (12) accounts for one-quarter to two-fifths of the total length of the second pipe section (12); the length of the first transition section (221) along the extension direction of the second flange section (22) accounts for two-fifths to three-fifths of the total length of the second flange section (22).

7. The reinforcing member according to claim 1, characterized in that, The flange (20) includes a first side (201) and a second side (202). One end of the first side (201) is connected to the main body (10), one end of the second side (202) is connected to the main body (10), and the other end of the first side (201) is connected to the other end of the second side (202).

8. The reinforcing member according to claim 7, characterized in that, The thickness of the first side (201) is equal to that of the second side (202), and is equal to the wall thickness of the main body (10).

9. The reinforcing member according to claim 1, characterized in that, The main body (10) also includes a third pipe section (13) connected to the second pipe section (12), the third pipe section (13) being located on the side of the second pipe section (12) away from the first pipe section (11); the degree of curvature of the second pipe section (12) is greater than the degree of curvature of the third pipe section (13); The main body (10) and the flange (20) are integrally formed; along the radial direction of the main body (10), the cross-sectional area of ​​the first pipe section (11) is smaller than the cross-sectional area of ​​the second pipe section (12), and the cross-sectional area of ​​the second pipe section (12) is smaller than the cross-sectional area of ​​the third pipe section (13).

10. The reinforcing member according to claim 1, characterized in that, Along the length direction of the main body (10), the wall thickness of some regions of the main body (10) is not equal to that of other regions; or, along the length direction of the main body (10), the wall thickness of each region of the main body (10) is equal.

11. The reinforcing member according to claim 1, characterized in that, The main body (10) includes a first side wall (101), a second side wall (102), a third side wall (103), and a fourth side wall (104); the first side wall (101) is located on the side of the main body (10) away from the driver's cab, the second side wall (102) is located on the side of the main body (10) facing the driver's cab; the third side wall (103) is located on the side of the main body (10) facing the roof, and the fourth side wall (104) is located on the side of the main body (10) facing the bottom; the first side wall (101), the second side wall (102), the third side wall (103), and the fourth side wall (104) are connected end to end to form a closed loop structure; At least one of the first sidewall (101), the third sidewall (103), and the fourth sidewall (104) is used to connect to the outer side panel.

12. A vehicle frame, characterized in that, The vehicle frame includes a side outer panel (400) and a side reinforcement structure, the side reinforcement structure being located inside the side outer panel; The side reinforcement structure includes a reinforcement member (100) as described in any one of claims 1 to 11, wherein the reinforcement member (100) is an upper reinforcement member on the A-pillar; the side reinforcement structure also includes a lower reinforcement member assembly (200) on the A-pillar and a reinforcement member assembly (300) on the B-pillar. The first pipe segment (11) is connected to the lower A-pillar reinforcement assembly (200); the second pipe segment (12) is located between the lower A-pillar reinforcement assembly (200) and the B-pillar reinforcement assembly (300); when the upper A-pillar reinforcement includes a third pipe segment (13), the third pipe segment (13) is connected to the B-pillar reinforcement assembly (300).

13. A vehicle, characterized in that, The vehicle includes the body frame as described in claim 12.

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