Front floor beam assembly and vehicle

Abstract

The utility model provides a front floor cross beam assembly and a vehicle. The front floor cross beam assembly comprises a front floor cross beam arranged in the left-right direction of the whole vehicle and a connecting strut beam with one end connected with the front floor cross beam. The connecting branch beam is obliquely arranged relative to the front floor cross beam, and the included angle alpha between the connecting branch beam and the front floor cross beam is larger than or equal to 45 degrees; the connecting point of the connecting branch beam and the front floor beam is arranged close to the end of the front floor beam, and at least one end of the front floor beam is provided with the connecting branch beam. According to the front floor cross beam assembly, the connection strength between the front floor cross beam and the doorsill beam can be improved, collision force at the position of the doorsill beam can be fully transmitted to the front floor cross beam when a whole vehicle is in side collision, effective transmission and dispersion of the collision force are achieved, and the side collision safety of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, and particularly relates to a front floor crossbeam assembly and a vehicle. Background Art

[0002] Currently, the front floor crossbeams in the vehicle body are all in a horizontal straight-line structure, and usually adopt a multi-segment sheet metal welding structure. At the same time, they are connected to the side sill beams through flanges at the ends of the crossbeams, or are connected through connecting brackets.

[0003] In the existing direct connection between the end of the front floor crossbeam and the sill beam or the indirect connection through a bracket, the number of connection points is small, which is likely to form a weak point in the connection between the front floor crossbeam assembly and the vehicle body, restricting the improvement of the vehicle body stiffness. At the same time, during a side collision of the whole vehicle, the weakness of the connection point between the front floor crossbeam and the sill beam will also affect the collision force transmission effect between the two, and is not conducive to the improvement of the side collision safety of the whole vehicle. Summary of the Utility Model

[0004] In view of this, the utility model aims to propose a front floor crossbeam assembly to facilitate the improvement of the side collision safety of the whole vehicle.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A front floor crossbeam assembly includes a front floor crossbeam arranged in the left-right direction of the whole vehicle, and a connecting beam connected to one end of the front floor crossbeam;

[0007] The connecting beam is arranged obliquely with respect to the front floor crossbeam, and the included angle α between the connecting beam and the front floor crossbeam satisfies α≥45°;

[0008] The connection point of the connecting beam and the front floor crossbeam is arranged close to the end of the front floor crossbeam, and the connecting beam is provided at least at one end of the front floor crossbeam.

[0009] Further, in the front-rear direction of the whole vehicle, the connecting beam is located in front of the front floor crossbeam.

[0010] Further, the connecting beam is integrally formed on the front floor crossbeam; or,

[0011] The connecting beam is lapped and fixed on the front floor crossbeam, and the connecting beam is lapped and connected to the top and the side of the front floor crossbeam.

[0012] Further, the cross-section of the front floor crossbeam is an "n" shape or an "M" shape with one side open, and connecting flanges are formed on both sides of the front floor crossbeam; or,

[0013] The cross-section of the front floor crossmember is closed, and a cavity arranged in the left-right direction of the whole vehicle is formed inside the front floor crossmember.

[0014] Furthermore, the front floor crossmember includes multiple sections of support beams connected end to end in the left-right direction of the whole vehicle; or,

[0015] The front floor crossmember is integrally formed.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] For the front floor crossmember assembly of the utility model, by arranging a connecting support beam near the end of the front floor crossmember, the connection points between the end of the front floor crossmember and the sill beam can be increased, which helps to increase the connection strength between the front floor crossmember assembly and the sill beam, and can also make the collision force at the sill beam position fully transmitted to the front floor crossmember during a side collision of the whole vehicle, realizing the effective transmission and dispersion of the collision force, and thus being beneficial to improving the side collision safety of the whole vehicle.

[0018] Meanwhile, making the included angle α between the connecting support beam and the front floor crossmember not less than 45°, it can also ensure the side strengthening range of the connecting support beam when the front floor crossmember assembly is arranged in the vehicle body, which helps to increase the connecting and strengthening effect of the connecting support beam.

[0019] In addition, the connecting support beam is located at the front side of the front floor crossmember, which can better increase the stiffness of the occupant position when the front floor crossmember assembly is arranged in the vehicle body, helping to improve the safety of the occupant during a side collision. Making the connecting support beam integrally formed on the front floor crossmember can eliminate the connection operation steps between the two, and can also ensure the connection strength between the two. Making the connecting support beam lap and connect with both the top and side of the front floor crossmember can ensure the reliability of the connection between the connecting support beam and the front floor crossmember.

[0020] Secondly, the cross-section of the front floor crossmember is in an "n" shape or an "M" shape, and connecting flanges are formed on both sides thereof. When the front floor crossmember assembly is arranged in the vehicle body, a cavity can be formed between the front floor crossmember and the front floor, which can increase the structural strength of the position of the front floor crossmember. The setting of the connecting flanges can facilitate the connection between the front floor crossmember and the front floor, and can improve the stability of the front floor crossmember arranged in the front floor.

[0021] In addition, the cross-section of the front floor crossmember is closed, and a cavity is formed inside the front floor crossmember, which can make the front floor crossmember have better structural strength. The front floor crossmember includes multiple sections of support beams connected end to end, which can facilitate the adaptation of the front floor crossmember to the overall styling requirements of the front floor position. The front floor crossmember is integrally formed, which is beneficial to its preparation, reduces the preparation cost, and also helps to ensure the structural strength of the front floor crossmember itself.

[0022] Another object of the present utility model is to provide a vehicle, in which sill beams are respectively arranged on the left and right sides of the vehicle body, and the front floor crossbeam assembly as described above is arranged between the two side sill beams.

[0023] Further, the front floor crossbeam assembly includes a front crossbeam assembly and a rear crossbeam assembly arranged at intervals in the front-rear direction of the whole vehicle;

[0024] Viewed from the up-down direction of the whole vehicle, the rear crossbeam assembly is located between the B-pillars on the left and right sides of the vehicle body, or the rear crossbeam assembly is arranged close to the B-pillars on the left and right sides of the vehicle body.

[0025] Further, both side sill beams are made of extruded profiles; or,

[0026] Both side sill beams each include an inner beam body and an outer beam body connected together in the left-right direction of the whole vehicle, and the inner beam body is made of steel sheet metal, and the outer beam body is made of extruded profiles.

[0027] Further, side step mounting skeletons are arranged on both side sill beams;

[0028] Both side step mounting skeletons extend in the front-rear direction of the whole vehicle, and in the left-right direction of the whole vehicle, one side of each side step mounting skeleton is connected to the corresponding side sill beam, and the other side of each side step mounting skeleton extends in the direction pointing outwards of the vehicle.

[0029] Further, the side step mounting skeletons are all made of extruded profiles, and the side step mounting skeletons are integrally formed with the side sill beams, or the side step mounting skeletons are connected to the side sill beams through connection structures.

[0030] For the vehicle of the present utility model, by arranging the above-mentioned front floor crossbeam assembly, it helps to increase the connection strength between the front floor crossbeam assembly and the side sill beams, and can also fully transfer the collision force at the position of the side sill beam to the front floor crossbeam assembly during a side impact of the whole vehicle, realizing the effective transfer and dispersion of the collision force, which is beneficial to improving the side impact safety of the whole vehicle.

[0031] Secondly, making the front floor crossbeam assembly include the front and rear crossbeam assemblies can have better lateral support stiffness, can improve the stiffness of the middle part of the vehicle body, and is also beneficial to forming rich collision force transmission channels in the vehicle body. Making the rear crossbeam assembly located between the two B-pillars can make the front floor crossbeam assembly play a lateral support role at the position of the B-pillars during a side impact, which helps to increase the anti-extrusion ability of the B-pillar position and is beneficial to improving the safety of the occupants. The side sill beam is made of extruded profiles, or the outer beam body in the side sill beam is made of extruded profiles, which is convenient for the preparation of the side sill beam, can also ensure its structural strength, and can also utilize the good energy absorption effect of the extruded profiles during collapse to improve the collision energy absorption ability of the side sill beam.

[0032] Furthermore, by providing the side step mounting skeleton, it is not only beneficial for the installation of the vehicle side step, but also possible to form an energy absorption space by using the side step mounting skeleton extending along the side of the vehicle body, which can improve the energy absorption effect during the side collision of the whole vehicle. The side step mounting skeleton is made of extruded profiles, which is convenient for its preparation and can also ensure its structural strength. The side step mounting skeleton and the sill beam are integrally formed, which is beneficial for the preparation of both and can also ensure the reliability of the connection between them. The side step mounting skeleton is connected to the sill beam through a connecting structure, which can increase the flexibility of the side step mounting skeleton and facilitate its maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0034] Figure 1 Schematic diagram of the setting of the front floor crossbeam assembly in the vehicle body according to the embodiment of the present utility model;

[0035] Figure 2 Schematic diagram of the structure of the front crossbeam assembly according to the embodiment of the present utility model;

[0036] Figure 3 Schematic diagram of the structure of the rear crossbeam assembly according to the embodiment of the present utility model;

[0037] Figure 4 Schematic diagram of the included angle between the connecting support beam and the front floor crossbeam according to the embodiment of the present utility model;

[0038] Figure 5 Schematic diagram of the structure when the sill beam is integrally formed with extruded profiles according to the embodiment of the present utility model;

[0039] Figure 6 Schematic diagram of the front floor crossbeam assembly being of a multi-section structure according to the embodiment of the present utility model;

[0040] Figure 7 For Figure 6 Schematic diagram of a partial structure;

[0041] Figure 8 For Figure 6 And Figure 7 Schematic diagram of the sill beam in

[0042] Figure 9 For Figure 8 Cross-sectional view at the A-A position in

[0043] Figure 10Schematic diagram when a side step installation skeleton is provided on a sill beam formed by extrusion molding of profiles;

[0044] Figure 11 Schematic diagram when a side step installation skeleton is provided on a sill beam including an inner beam body and an outer beam body;

[0045] Explanation of reference numerals:

[0046] 1. Front floor cross beam; 2. Connecting support beam; 3. Connecting bracket; 4. Sill beam; 5. B-pillar; 6. A-pillar; 7. Front floor; 8. Side step installation skeleton;

[0047] 1a. Connecting flange; 100. Front cross beam assembly; 200. Rear cross beam assembly; 401. Inner beam body; 402. Outer beam body; 403. Support structure; 7a. Middle channel. Detailed implementation manners

[0048] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0049] In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connecting piece" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific situations.

[0051] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0052] Embodiment 1

[0053] This embodiment relates to a front floor cross beam assembly, which is arranged at the front floor position of the vehicle underbody, and through its structural design, the overall vehicle side impact safety performance is improved.

[0054] In terms of the overall structure, in combination withFigures 1 to 4 As shown in Figures 1 to 4 , the front floor crossbeam assembly of this embodiment includes a front floor crossbeam 1 arranged in the left - right direction of the whole vehicle, and a connecting beam 2 with one end connected to the front floor crossbeam 1.

[0055] Among them, the connecting beam 2 is arranged obliquely with respect to the front floor crossbeam 1, and the included angle α between the connecting beam 2 and the front floor crossbeam 1 satisfies α≥45°. At the same time, the connection point of the connecting beam 2 and the front floor crossbeam 1 is also arranged close to the end of the front floor crossbeam 1, and the connecting beam 2 is provided at at least one end of the front floor crossbeam 1.

[0056] At this time, with the above - mentioned setting, by arranging the connecting beam 2 close to the end of the front floor crossbeam 1, it can increase the connection points between the end of the front floor crossbeam 1 and the sill beam 4 on the side of the vehicle body, which helps to increase the connection strength between the whole front floor crossbeam assembly and the sill beam 4. At the same time, it can also make the collision force at the position of the sill beam 1 be fully transmitted to the front floor crossbeam 1 during a side impact of the whole vehicle, realizing the effective transmission and dispersion of the collision force, and further achieving the effect of improving the side - impact safety of the whole vehicle.

[0057] Of course, it is also worth noting that by making the included angle α between the connecting beam 2 and the front floor crossbeam 1 not less than 45°, when the front floor crossbeam assembly of this embodiment is set in the vehicle body, it can also ensure the side strengthening range of the connecting beam 2, thus helping to increase the connection strengthening effect of the connecting beam 2.

[0058] Based on the above overall introduction, specifically, still in combination with Figure 1 As shown in Figure 1 , in the front - rear direction of the whole vehicle, the connecting beam 2 is preferably located on the front side of the front floor crossbeam 1. In this way, making the connecting beam 2 located on the front side of the front floor crossbeam 1 can better increase the stiffness of the occupant position when the front floor crossbeam assembly is set in the vehicle body, which helps to improve the safety of the occupants during a side impact.

[0059] In addition, during specific implementation, preferably as shown in Figures 1 to 4 Figures 1 to 4 , the connecting beam 2 is provided at both ends of the front floor crossbeam 1. And the included angle α between the above - mentioned connecting beam 2 and the front floor crossbeam 1 can be, for example, 45°, 50°, 52°, 55° or 60°, etc.

[0060] In this embodiment, based on the setting of the connecting beam 2 on the front floor crossbeam 1, as a feasible implementation form, for example, the connecting beam 2 can be integrally formed on the front floor crossbeam 1. At this time, by integrally forming the connecting beam 2 on the front floor crossbeam 1, obviously it can save the connection operation steps between the two, and can also ensure the connection strength between the two.

[0061] In specific implementation, for integrally forming the connecting support beam 2 and the front floor cross beam 1, for example, it can make the overall front floor cross beam assembly of this embodiment adopt a sheet metal structure, and the front floor cross beam 1 and the connecting support beam 2 connected to the front floor cross beam 1 are formed by stamping. However, in addition to being a sheet metal part formed by stamping, of course, it is also possible to integrally form the front floor cross beam 1 and the connecting support beam 2 by other means, and no limitation is imposed here.

[0062] In this embodiment, in addition to integrally forming the connecting support beam 2 on the front floor cross beam 1, that is, making the overall front floor cross beam assembly integrally formed. Of course, in some other implementation forms, in combination with Figure 2 and Figure 3 as shown, for example, the connecting support beam 2 can also be lap-connected and fixed to the front floor cross beam 1, and the connecting support beam 2 is also lap-connected to the top and the side of the front floor cross beam 1.

[0063] Thus, making the connecting support beam 2 lap-connected and fixed to the front floor cross beam 1 is more conducive to the forming control of the connecting support beam 2, and is also conducive to controlling the angle α between the connecting support beam 2 and the front floor cross beam 1. And by making the connecting support beam 2 lap-connected to both the top and the side of the front floor cross beam 1, it can be understood that it can obviously ensure the reliability of the connection between the connecting support beam 2 and the front floor cross beam 1.

[0064] In this embodiment, it is worth noting that in specific implementation, referring continuously to Figure 2 and Figure 3 as shown, the cross-section of the front floor cross beam 1 can be designed as an "n" shape or an "M" shape with one side open, and connecting flanges 1a are also formed on both sides of the front floor cross beam 1. When the front floor cross beam assembly is arranged in the vehicle body, the connecting flanges 1a can connect the front floor cross beam 1 to the front floor 7 in the vehicle body, so that the front floor cross beam 1 can be stably arranged at the position of the front floor of the vehicle body.

[0065] It should be noted that as a preferred implementation form, the open side of the cross-section of the front floor cross beam 1 is generally located at the bottom. Still taking the front floor cross beam 1 as a sheet metal part as an example, usually, the "n" shape or "M" shape cross-section of the front floor cross beam 1 can be formed by stamping or rolling.

[0066] In addition, it can be understood that by making the cross-section of the front floor cross beam 1 be in the shape of "n" or "M" and forming connecting flanges 1a on both sides thereof, when the front floor cross beam assembly is arranged in the vehicle body, a cavity can be formed between the front floor cross beam 1 and the front floor 7, which can increase the structural strength of the position of the front floor cross beam 1. And the setting of the connecting flanges 1a is conducive to the connection between the front floor cross beam 1 and the front floor 7, and can improve the stability of the front floor cross beam 1 arranged in the front floor.

[0067] It should be noted that, in addition to making the cross-section of the front floor crossmember 1 have an open side, as other feasible implementation forms, for example, in this embodiment, the cross-section of the front floor crossmember 1 can also be made closed, and a cavity arranged in the left-right direction of the whole vehicle is formed in the front floor crossmember 1.

[0068] During specific implementation, for example, the front floor crossmember 1 can be prepared by an extrusion molding method, so that its cross-section is closed and a hollow cavity is formed therein. Of course, in addition to the extrusion molding method, the front floor crossmember 1 can still be made of a sheet metal part and prepared by a roll forming method, which is also acceptable.

[0069] It can be understood that by making the cross-section of the front floor crossmember 1 closed and forming a cavity in the front floor crossmember 1, it can make the front floor crossmember 1 have better structural strength. And it should be noted that when the front floor crossmember 1 adopts a closed cross-section, the above-mentioned connecting beam 2 is generally suitable to be connected to the front floor crossmember 1 by a lapping connection method to jointly form a front floor crossmember assembly.

[0070] In this embodiment, still as Figures 1 to 3 shown in, during specific implementation, as a feasible implementation form, the front floor crossmember 1 can be integrally formed, for example. This integral forming method can adopt the aforementioned extrusion molding or roll forming methods, etc. And making the front floor crossmember 1 integrally formed can facilitate its preparation, reduce its preparation cost, and at the same time help to ensure the structural strength of the front floor crossmember 1 itself.

[0071] And again as Figure 6 and Figure 7 shown in, in addition to integral forming, as other forming methods of the front floor crossmember 1, for example, the front floor crossmember 1 can be made to include multiple sections of beams connected end to end in the left-right direction of the whole vehicle. The multiple sections of beams can be separated by the middle channel 7a on the front floor 7 and connected by the middle channel 7a. Or, the multiple sections of beams constituting the front floor crossmember 1 can specifically include parts on both sides of the middle channel 7a and a part on the top of the middle channel 7a, and adjacent parts are connected together.

[0072] It can be understood that compared with the integral forming of the front floor crossmember 1, by making the front floor crossmember 1 include multiple sections of beams connected end to end, it can facilitate the front floor crossmember 1 to adapt to the overall styling requirements of the front floor position, so as to meet the design requirements of a more complex front floor surface.

[0073] For the front floor crossbeam assembly of this embodiment, with the above design, by arranging the connecting beam 2 near the end of the front floor crossbeam 1, the connection points between the end of the front floor crossbeam 1 and the sill beam 4 can be increased, which helps to enhance the connection strength between the front floor crossbeam assembly and the sill beam 4. Also, during a vehicle side collision, the collision force at the position of the sill beam 4 can be fully transmitted to the front floor crossbeam 1, enabling effective transmission and dispersion of the collision force, and thus facilitating the improvement of the vehicle's side collision safety performance.

[0074] Embodiment Two

[0075] This embodiment relates to a vehicle, in which sill beams 4 are provided on the left and right sides of the vehicle body, and the front floor crossbeam assembly in Embodiment One is provided between the two side sill beams 4.

[0076] Among them, as a preferred implementation form, still in combination with Figure 1 , and Figure 6 and Figure 7 as shown in, the front floor crossbeam assembly of this embodiment may include a front crossbeam assembly 100 and a rear crossbeam assembly 200 arranged at intervals in the front-rear direction of the vehicle.

[0077] In this way, by making the front floor crossbeam assembly include the front and rear crossbeam assemblies, it can have better lateral support stiffness, improve the stiffness of the middle part of the vehicle body, and at the same time facilitate the formation of rich collision force transmission channels in the vehicle body, thus helping to enhance the vehicle's collision safety performance.

[0078] It should be noted that when the front floor crossbeam assembly includes a front crossbeam assembly 100 and a rear crossbeam assembly 200 arranged at intervals front and rear, the front floor crossbeam 1 in the front and rear crossbeam assemblies, as well as the connecting beam 2 arranged near the end of the front floor crossbeam 1, can all adopt the same structural form, or based on the layout requirements of different positions, they can also adopt different structural forms.

[0079] Specifically, continue to refer to Figure 2 and Figure 3 , or still refer to Figure 7 as shown in, for example, a flanging structure can be formed at the end of the front floor crossbeam 1 in the front crossbeam assembly 100 so that the front floor crossbeam 1 in the front crossbeam assembly 100 is directly connected to the sill beam 4. For the front floor crossbeam 1 in the rear crossbeam assembly 200, for example, a connecting bracket 3 can be provided at its end, and the end of the front floor crossbeam 1 is connected to the sill beam 4 through the connecting bracket 3. When the connecting bracket 3 is provided, one end of the connecting beam 2 close to the front floor crossbeam 1 can also be partially connected to the connecting bracket 3, or the connecting beam 2 is connected to the front floor crossbeam 1 via the connecting bracket 3.

[0080] In this embodiment, since the front floor crossmember assembly includes a front crossmember assembly 100 and a rear crossmember assembly 200, as a preferred implementation form, with reference to the A-pillars 6 and B-pillars 5 on the left and right sides of the vehicle body, from the up-and-down direction of the whole vehicle, the above-mentioned rear crossmember assembly 200 of the front crossmember assembly 100 can be set to be located between the B-pillars 5 on both sides, or in addition to making the rear crossmember assembly 200 exactly located between the B-pillars 5 on the left and right sides, it is also feasible to make the rear crossmember assembly 200 close to the B-pillars 5 on the left and right sides of the vehicle body.

[0081] At this time, making the rear crossmember assembly 200 located between the B-pillars 5 on both sides can enable the front floor crossmember assembly arranged corresponding to the B-pillars 5 to play a better lateral support role for the B-pillars 5 during a side impact, which helps to increase the anti-extrusion ability at the position of the B-pillars 5 and is beneficial to improving the safety of the occupants.

[0082] In this embodiment, as a preferred implementation form, in combination with Figure 1 and Figure 5 as shown, for example, the sill beams 4 on both sides can both be integrally made of extruded profiles, or, in addition to being directly formed by extruded profiles, in combination with Figure 8 and Figure 9 as shown, the sill beams 4 on both sides can also each include an inner beam body 401 and an outer beam body 402 connected together in the left-right direction of the whole vehicle, and the inner beam body 401 is made of steel sheet metal, while the outer beam body 402 is made of extruded profiles, and a sill beam cavity is also formed between the inner beam body 401 and the outer beam body 402.

[0083] It can be understood that making the sill beam 4 made of extruded profiles, or making the outer beam body 402 in the sill beam 4 made of extruded profiles, can facilitate the preparation of the sill beam 4, can also ensure its structural strength, and at the same time can utilize the good energy absorption effect of the extruded profile to improve the collision energy absorption ability of the sill beam 4.

[0084] In specific implementation, whether the sill beam 4 is integrally made of extruded profiles or the outer beam body 402 in the sill beam 4 is made of extruded profiles, the extruded profile is preferably an aluminum alloy profile. Thus, not only can it be beneficial to reduce the weight of the sill beam 4 and facilitate the lightweight of the vehicle body, but also it has the characteristics of being beneficial to forming and preparation.

[0085] In this embodiment, for the structural form including the inner beam body 401 and the outer beam body 402, the inner beam body 401 and the outer beam body 402 can generally be directly or indirectly fixedly connected together by means of welding, riveting or screwing, etc. In addition, still from Figure 8 , and in combination with Figure 9 as shown, in specific implementation, in this embodiment, for example, a support structure 403 located in the sill beam cavity can also be provided on the outer beam body 402.

[0086] Preferably, the above-mentioned support structure 403 can be integrally formed on the outer side beam 402. Specifically, the support structure 403 extends along the longitudinal direction of the vehicle body and has a gap with the inner side beam 401. At the same time, in the lateral direction of the vehicle body, the support structure 403 can be connected to the front floor crossbeam assembly inside the sill beam 4, so as to help form a force transmission channel with the front floor crossbeam assembly when the vehicle body undergoes a side collision.

[0087] It should be noted that the above-mentioned support structure 403 is connected to the front floor crossbeam assembly in the lateral direction of the vehicle body, that is, the projections of the support structure 403 and the front floor crossbeam assembly in the lateral direction of the vehicle body at least partially overlap.

[0088] In some embodiments of this example, the sill beams 4 on both sides, for example, can adopt the structural forms as Figure 1 and Figure 6 、 Figure 7 shown. However, in addition to the structural forms shown in Figure 1 、 Figure 6 and Figure 7 , as a preferred embodiment, in this example, referring to Figure 10 and Figure 11 shown, for example, side step mounting skeletons 8 can also be provided on the sill beams 4 on both sides.

[0089] Among them, the side step mounting skeletons 8 on both sides both extend along the longitudinal direction of the vehicle body. In the lateral direction of the vehicle body, one side of each side step mounting skeleton 8 is connected to the corresponding side sill beam 4, and the other side of each side step mounting skeleton 8 extends in the direction pointing outwards from the vehicle. It should be noted that for the sill beam 4 including the inner side beam 401 and the outer side beam 402, the side step mounting skeleton 8 is specifically connected to the outer side beam 402.

[0090] The side step mounting skeletons 8 provided on the sill beams 4 on both sides are mainly used as the basic structure for the fixed pedals on the side of the vehicle. During the general assembly of the vehicle body, generally, side step decorative panels and the like will be further provided on the side step mounting skeletons 8 to cover the side step mounting skeletons 8 and improve the overall aesthetics of the side step position of the vehicle. At the same time, in addition to the decorative panels, of course, according to the design requirements of specific vehicle models, taking the side step mounting skeleton 8 as the installation basis, projection modules and the like located at the side step position can also be further provided, thereby better improving the technological sense of the vehicle and the overall quality of the vehicle.

[0091] It can be understood that by providing the side step mounting skeletons 8 on the sill beams 4 on both sides, not only is it beneficial to the setting of the vehicle side steps, but also by using the extension of the side step mounting skeletons 8, an energy absorption space can be formed by the side step mounting skeletons 8 extending on the side of the vehicle body, so as to improve the energy absorption effect during a side collision of the vehicle body.

[0092] In this embodiment, as a preferred implementation form, the above-mentioned side step mounting skeleton 8 can also be made of extruded profiles, for example. Specifically, the side step mounting skeleton 8 can be integrally formed with the sill beam 4, or the side step mounting skeleton 8 can also be connected to the sill beam 4 through a connecting structure. The above-mentioned connecting structure generally adopts a screwed connection structure to facilitate the disassembly, repair or replacement of the side step mounting skeleton 8.

[0093] It can be understood that by making the side step mounting skeleton 8 also made of extruded profiles, it is convenient for its preparation and can also ensure its structural strength. Making the side step mounting skeleton 8 integrally formed with the sill beam 4 is beneficial to the preparation of both and can also ensure the reliability of the connection between the two. Making the side step mounting skeleton 8 connected to the sill beam 4 through a connecting structure can increase the flexibility of the setting of the side step mounting skeleton 8 and has the advantage of being convenient for maintenance and replacement.

[0094] For the vehicle of this embodiment, by setting the front floor crossbeam assembly in the first embodiment, it helps to increase the connection strength between the front floor crossbeam 1 and the sill beam 4, and can also make the collision force at the position of the sill beam 4 fully transmitted to the position of the front floor crossbeam 1 during a side impact of the whole vehicle. It can achieve the effective transmission and dispersion of the collision force, which is beneficial to improving the side impact safety of the whole vehicle.

[0095] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A front floor beam assembly, characterized in that: It comprises a front floor crossbeam (1) arranged along the left-right direction of the whole vehicle, and a connecting support beam (2) one end of which is connected to the front floor crossbeam (1); The connecting support beam (2) is arranged obliquely relative to the front floor cross beam (1), and the angle α between the connecting support beam (2) and the front floor cross beam (1) satisfies α≥45°; The connection point between the connecting support beam (2) and the front floor cross beam (1) is arranged close to the end of the front floor cross beam (1), and the connecting support beam (2) is arranged at least at one end of the front floor cross beam (1).

2. The front floor crossbeam assembly according to claim 1, characterized in that: In the front-rear direction of the vehicle, the connecting support beam (2) is located on the front side of the front floor cross beam (1).

3. The front floor crossbeam assembly according to claim 1, characterized in that: The connecting support beam (2) is integrally formed on the front floor cross beam (1); or, The connecting support beam (2) is overlapped and fixedly connected to the front floor cross beam (1), and the connecting support beam (2) is overlapped and connected to the top of the front floor cross beam (1) and the side of the front floor cross beam (1).

4. The front floor crossbeam assembly according to claim 1, characterized in that: The cross section of the front floor cross beam (1) is an "n" shape or an "M" shape with one side open, and connecting flanges (1a) are formed on both sides of the front floor cross beam (1); or, The cross section of the front floor cross beam (1) is closed, and a cavity arranged along the left-right direction of the whole vehicle is formed inside the front floor cross beam (1).

5. The front floor crossbeam assembly according to any one of claims 1 to 4, characterized in that: The front floor cross beam (1) comprises a plurality of supporting beams connected end to end along the left-right direction of the vehicle; or The front floor crossbeam (1) is integrally formed.

6. A vehicle, characterized in that: The vehicle body is provided with sill beams (4) arranged on left and right sides, and a front floor crossbeam assembly as claimed in any one of claims 1 to 5 is arranged between the sill beams (4) on both sides.

7. The vehicle according to claim 6, characterized in that: The front floor crossbeam assembly comprises a front crossbeam assembly (100) and a rear crossbeam assembly (200) which are arranged at intervals along the front-rear direction of the vehicle; Viewed from the upper and lower directions of the vehicle, the rear cross beam assembly (200) is located between the B-pillars (5) on the left and right sides of the vehicle body, or the rear cross beam assembly (200) is arranged close to the B-pillars (5) on the left and right sides of the vehicle body.

8. The vehicle according to claim 6, characterized in that: The threshold beams (4) on both sides are made of extruded profiles; or, The sill beams (4) on both sides include an inner beam body (401) and an outer beam body (402) connected together in the left-right direction of the vehicle, and the inner beam body (401) is made of steel sheet metal, and the outer beam body (402) is made of extruded profiles.

9. The vehicle according to claim 8, characterized in that: Side step mounting frames (8) are provided on the threshold beams (4) on both sides; The side step mounting frames (8) on both sides extend in the front-rear direction of the vehicle, and in the left-right direction of the vehicle, one side of the side step mounting frames (8) on each side is connected to the door sill beam (4) on the same side, and the other side of the side step mounting frames (8) on each side extends in a direction pointing outward from the vehicle.

10. The vehicle according to claim 9, characterized in that: The side step mounting frame (8) is made of extruded profile, and the side step mounting frame (8) and the door sill beam (4) are integrally formed, or the side step mounting frame (8) is connected to the door sill beam (4) via a connecting structure.

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