Vehicle body structure and vehicle

Abstract

The utility model provides a vehicle body structure and a vehicle. The vehicle body structure comprises B columns arranged on the left side and the right side respectively, a front floor assembly connected with the bottoms of the B columns on the two sides, and a supporting piece arranged between the front floor assembly and the B column on at least one side. The supporting piece is obliquely arranged in the left-right direction of the whole vehicle, one end of the supporting piece is connected to the column B, the other end of the supporting piece is connected to the front floor assembly, and the column B, the front floor assembly and the supporting piece are connected to form a triangular structure. The supporting piece is arranged between the B column and the front floor assembly, and the B column, the front floor assembly and the supporting piece are connected to form the triangular structure, so that reliable lateral support can be provided for the B column by utilizing the supporting effect of the supporting piece and the characteristic of high strength of the triangular structure; therefore, the deformation resisting capacity of the B column can be improved during side collision, invasion of the B column into a driving cabin can be reduced, and the side collision safety of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle body structure. Meanwhile, the utility model also relates to a vehicle with the vehicle body structure. Background Art

[0002] The B-pillar is an important supporting column in the vehicle body structure. It is located between the front and rear doors and extends along the vertical direction of the vehicle, connecting the vehicle roof and chassis. In addition, the B-pillar can be used to install seat belts. Due to the location of the B-pillar, when the vehicle hits the side, the B-pillar will be an important force-bearing part. When the vehicle hits the side, the B-pillar of the existing structure is prone to deformation and has a large intrusion into the cockpit, which is easy to cause serious injuries to the occupants. Utility Model Content

[0003] In view of this, the utility model aims to provide a vehicle body structure to improve the side collision safety of the entire vehicle.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A vehicle body structure, comprising B-pillars arranged on left and right sides, a front floor assembly connected to the bottoms of the B-pillars on both sides, and a support member arranged between the front floor assembly and at least one of the B-pillars on one side;

[0006] The support member is arranged obliquely in the left-right direction of the vehicle, and one end of the support member is connected to the B-pillar, and the other end of the support member is connected to the front floor assembly. The B-pillar, the front floor assembly and the support member are connected to form a triangular structure.

[0007] Furthermore, the front floor assembly includes door sill beams disposed on the left and right sides, and a front floor cross beam connected between the door sill beams on both sides;

[0008] The bottom of the B-pillar on each side is connected to the threshold beam on the same side. From the up and down direction of the vehicle, the front floor beam is located between the B-pillars on both sides, and the end of the support member connected to the front floor assembly is connected to the front floor beam.

[0009] Furthermore, the front floor cross beam includes a cross beam body, and cross beam connecting plates located at left and right ends of the cross beam body;

[0010] The crossbeam body is connected to the threshold beams on each side through the crossbeam connecting plates at both ends, and the support member is connected to the crossbeam connecting plates.

[0011] Furthermore, the crossbeam body is roll-formed, and the cross section of the crossbeam body is "M"-shaped.

[0012] Furthermore, the sill beams on both sides are made of extruded aluminum, and from the front-rear direction of the vehicle, the sill beams on both sides have a first part, a second part and a third part that are sequentially connected from the outside to the inside along the left-right direction of the vehicle;

[0013] A plurality of cavities are formed in the first part, the second part and the third part, and the second part is arranged in a bent shape in the left-right direction of the vehicle;

[0014] The bottom of the B-pillar on each side is connected to the first portion on the same side, and the front floor cross beam is connected between the first portions on both sides.

[0015] Furthermore, the first part has a first transverse rib arranged along the left-right direction of the vehicle, the third part has a second transverse rib arranged along the left-right direction of the vehicle, and the thickness of the first transverse rib is less than the thickness of the second transverse rib;

[0016] The second part includes a connecting rib connected between the first part and the third part, the connecting rib is bent and includes an outer rib and an inner rib connected together, the outer rib is connected to the first part, and the inner rib is connected to the third part.

[0017] Furthermore, the thickness of the outer ribs is smaller than the thickness of the inner ribs, and the connecting ribs are multiple and spaced apart in the vertical direction of the vehicle;

[0018] From bottom to top along the vertical direction of the vehicle, the bending angle of each connecting rib gradually increases.

[0019] Furthermore, the support member is a pipe.

[0020] Furthermore, the support members are provided between the B-pillars on both sides and the front floor assembly, and the support members are arranged in two crosses, and at least one of the support members is provided with a recessed portion at the intersection of the two support members.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The vehicle body structure described in the utility model, by arranging a support member between the B-pillar and the front floor assembly, and connecting the B-pillar, the front floor assembly and the support member to form a triangular structure, can provide reliable lateral support for the B-pillar by utilizing the supporting function of the support member and the high strength of the triangular structure, thereby being able to improve the ability of the B-pillar to resist deformation during a side collision, helping to reduce the intrusion of the B-pillar into the driver's cabin, and being beneficial to improving the side collision safety of the entire vehicle.

[0023] In addition, by providing a front floor crossbeam and connecting the support member to the front floor crossbeam, the connection between the support member and the front floor assembly can be facilitated, and the lateral (left-right direction of the vehicle) support function of the front floor crossbeam can be utilized to further increase the rigidity of the formed triangular structure and increase the force transmission channel during side collision, which helps to improve the safety of the vehicle side collision. The front floor crossbeam is composed of a crossbeam body and a crossbeam connecting plate, and the support member is connected to the crossbeam connecting plate, which can facilitate the connection between the support member and the front floor crossbeam, and also allow the end of the support member connected to the front floor crossbeam to be close to the door sill beam, and the support strength of the support member can be improved with the support of the door sill beam.

[0024] Secondly, the roll forming of the cross beam body can facilitate the preparation of the cross beam body, reduce its preparation cost, and make the cross section of the cross beam body "M" shaped, which can ensure the structural strength of the cross beam body itself. The threshold beam includes a first part, a second part and a third part arranged from the outside to the inside, and the second part is arranged in a bent shape. When the vehicle collides, especially when a side collision occurs, the threshold beam can be better crushed and absorb energy, which can improve the collision energy absorption effect of the threshold beam and help improve the collision safety of the whole vehicle.

[0025] By providing transverse ribs in the first part and the third part, and making the thickness of the transverse ribs in the first part smaller than that in the third part, it is advantageous to realize the difference in transverse stiffness between the first part and the third part, and can also make the threshold beam collapse and absorb energy better when the vehicle collides, especially when a side collision occurs, and can improve the collision energy absorption effect of the threshold beam. The second part is composed of a bent connecting rib, which is easy to design and shape, and can also make the second part have better energy absorption capacity based on the bent design.

[0026] In addition, the thickness of the outer ribs is smaller than that of the inner ribs, which can further improve the crushing energy absorption performance of the second part. The connection ribs are arranged in multiple intervals to ensure the connection effect of the second part and the stability of the overall structure of the threshold beam. The bending angles of the connection ribs gradually increase from bottom to top. The differentiated design of the bending angles of the connection ribs can be used to make the small-angle connection ribs break first during a collision, and as the collision force increases, the upper connection ribs are disconnected one by one. This can adapt to different collision force conditions and avoid other risks caused by the disconnection of all the connection ribs during a collision.

[0027] In addition, the support member is made of a pipe, which is convenient for preparing the support member and can also take advantage of the high structural strength of the pipe to increase the support effect of the support member. By arranging support members between the B-pillars on both sides and the front floor longitudinal beam and arranging a recessed portion at the intersection of the support members, a better support effect can be provided and the compact arrangement of the two support members can be achieved.

[0028] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the vehicle body structure as described above.

[0029] The vehicle described in the utility model has all the beneficial effects of the above-mentioned vehicle body structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0031] Figure 1 It is a partial schematic diagram of the vehicle body structure according to an embodiment of the utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the structure shown in another viewing angle;

[0033] Figure 3 This is a schematic diagram of the structure of the support member according to an embodiment of the utility model;

[0034] Figure 4 This is a schematic structural diagram of the front floor crossbeam according to an embodiment of the utility model;

[0035] Figure 5 for Figure 4 Cross-section along line AA;

[0036] Figure 6 This is a schematic structural diagram of a beam connecting plate according to an embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the structure of the threshold beam according to an embodiment of the utility model;

[0038] Figure 8 for Figure 7 Cross-section at the mid-BB position;

[0039] Fig. 9 for Figure 7 A partial schematic diagram of the second part;

[0040] Fig.10 It is a schematic diagram of the gradual setting of the bending angle of the connecting rib according to an embodiment of the utility model.

[0041] Description of reference numerals:

[0042] 1. Door sill beam; 2. B-pillar; 3. Front floor beam; 4. Support member; 5. End plate;

[0043] 101, first part; 1011, first transverse tendon; 1011a, tendon segment; 1012, vertical tendon; 102, second part; 1021, connecting tendon; 1021a, outer tendon; 1021b, inner tendon; 103, third part; 1031, second transverse tendon;

[0044] 301, beam body; 302, beam connecting plate;

[0045] 401, recessed portion;

[0046] K. Crumpling space. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0048] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, 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 therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0050] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] Embodiment 1

[0052] This embodiment relates to a vehicle body structure, combined with Figure 1 and Figure 2 As shown in , it includes B-pillars 2 arranged on the left and right sides, a front floor assembly connected to the bottom of the B-pillars 2 on both sides, and a support member 4 arranged between the front floor assembly and at least one side of the B-pillar 2.

[0053] Among them, the support member 4 is arranged tilted in the left and right direction of the vehicle, and one end of the support member 4 is connected to the B-pillar 2, and the other end of the support member 4 is connected to the front floor assembly. The B-pillar 2, the front floor assembly and the support member 4 are connected to form a triangular structure.

[0054] At this time, by setting the support member 4 arranged as above, this embodiment can utilize the supporting function of the support member 4 and the high strength of the triangular structure to provide reliable lateral support for the B-pillar 2, thereby being able to improve the ability of the B-pillar 2 to resist deformation during a side collision, helping to reduce the intrusion of the B-pillar 2 into the passenger compartment, thereby achieving the purpose of improving the side collision safety of the entire vehicle.

[0055] Based on the above overall introduction, an exemplary structure of the vehicle body structure of this embodiment is referred to as Figure 1 and Figure 2 As shown in , the structure of the B-pillar 2 can refer to the prior art. Figure 1 and Figure 2 As shown in , the front floor assembly of this embodiment includes sill beams 1 disposed on the left and right sides, and a front floor cross beam 3 connected between the sill beams 1 on both sides. The bottom of each side B-pillar 2 is connected to the sill beam 1 on the same side, and, from the vertical direction of the vehicle, the front floor cross beam 3 is located between the two side B-pillars 2, and the end of the support member 4 connected to the front floor assembly is connected to the front floor cross beam 3.

[0056] By providing the front floor cross beam 3 and connecting the support member 4 to the front floor cross beam 3, the connection between the support member 4 and the front floor assembly can be facilitated. At the same time, the lateral (left-right direction of the whole vehicle) supporting effect of the front floor cross beam 3 can also be utilized to further increase the rigidity of the formed triangular structure and increase the force transmission channel during side collision, which helps to improve the safety of the whole vehicle in side collision.

[0057] And refer to Figure 1 and Figure 2 As shown in , as a preferred embodiment, in this embodiment, a support member 4 is provided between the B-pillars 2 on both sides and the front floor assembly, and two support members 4 are arranged crosswise. Moreover, at the intersection of the two support members 4, at least one of the support members 4 is provided with a recessed portion 401. Such an arrangement can improve the structural stability, provide a better support effect for the B-pillars 2, and also facilitate the compact arrangement of the two support members 4.

[0058] Among them, as a preferred embodiment, a recessed portion 401 is provided at the intersection of the two support members 4, so that the two support members 4 are overlapped in the left-right direction of the vehicle, which can provide better lateral support for the B-pillars 2 on both sides, and can further reduce the intrusion of the B-pillars 2 on the driver's cabin during a side collision. Obviously, in specific implementation, it is also possible to only provide the recessed portion 401 on one side of the support member 4.

[0059] In addition, if Figures 1 to 3 As shown in , as a preferred embodiment, the support member 4 of this embodiment is a pipe, and the above-mentioned recessed portion 401 is specifically a groove provided on the support along the length direction of the support member 4. Using the support member 4 as a pipe can facilitate the preparation of the support member 4, and at the same time, it can also take advantage of the high strength of the pipe structure to increase the support effect of the support member 4. At this time, in order to facilitate the connection between the support member 4 and the B-pillar 2, as shown in FIG. Figure 3 As shown in the figure, an end plate 5 is provided at one end of the support member 4 close to the B-pillar 2. The support member 4 is connected to the B-pillar 2 through the end plate 5, which can increase the connection area with the B-pillar 2 and thus improve the connection firmness.

[0060] It should be noted that, in addition to using pipes, the support member 4 can also be formed by welding multiple sheet metal parts, as long as it can be supported between the B-pillar 2 and the front floor assembly.

[0061] Combination Figure 4 and Figure 5 As shown in , as a preferred embodiment, the front floor cross beam 3 of this embodiment includes a cross beam body 301, and cross beam connecting plates 302 located at the left and right ends of the cross beam body 301. The cross beam body 301 is connected to the side sill beams 1 through the cross beam connecting plates 302 at both ends, and the support member 4 is connected to the cross beam connecting plates 302. This design can facilitate the connection between the support member 4 and the front floor cross beam 3, and also make the end of the support member 4 connected to the front floor cross beam 3 close to the sill beam 1, and can improve the support strength of the support member 4 with the support of the sill beam 1.

[0062] It should be noted that, in addition to connecting the support member 4 to the cross beam connecting plate 302, of course, the support member 4 can also be connected to the cross beam body 301. In addition, the cross beam body 301 is generally provided with front seat mounting points for the installation of the front seats.

[0063] Continue as Figure 4 and Figure 5 As shown in , as a preferred implementation form, the cross beam body 301 of this embodiment is roll-formed, and the cross section of the cross beam body 301 is "M" shaped. This not only facilitates the preparation of the cross beam body 301, but also reduces its preparation cost and ensures the structural strength of the cross beam body 301 itself. At the same time, a cavity structure that is transversely connected between the cross beam body 301 and the front floor can be formed, which is conducive to further improving the structural reinforcement effect of the front floor cross beam 3. Obviously, in the specific implementation, the cross section of the cross beam body 301 can be set to other shapes such as "n" shape in addition to being set to "M".

[0064] The structure of the beam connecting plate 302 of this embodiment is as follows Figure 6As shown in the figure, its cross-section is in a "ji" shape and is buckled on the top of the beam main body 301. Moreover, cavities that penetrate between the two side sill beams 1 are formed between the beam connection plates 302 on both sides and the beam main body 301, so that the advantages of the cavities can be utilized to further improve the lateral support effect on the B-pillar 2 and reduce the intrusion of the B-pillar 2 into the passenger compartment during a side collision. In addition, in order to facilitate the connection between the beam connection plate 302 and the sill beam 1, an outward-turned edge is provided at one end of the beam connection plate 302 close to the sill beam 1. At the same time, the setting of the outward-turned edge can also improve the structural strength of the beam connection plate 302, thereby facilitating the improvement of the lateral support effect of the front floor beam 3 on the B-pillar 2. During specific implementation, the beam connection plate 302 is generally a sheet metal part formed by stamping and can be connected to the beam main body 301 and the sill beam 1 by welding.

[0065] In addition, as a preferred implementation manner, both side sill beams 1 are made of extruded aluminum, and from the perspective of the front and rear directions of the whole vehicle, combined with Figure 7 and Figure 8 As shown in the figure, both side sill beams 1 have a first part 101, a second part 102, and a third part 103 that are sequentially connected from the outside to the inside in the left-right direction of the whole vehicle. Moreover, a plurality of cavities are formed in each of the first part 101, the second part 102, and the third part 103, and the second part 102 is bent in the left-right direction of the whole vehicle.

[0066] It can be understood that such a design can enable the sill beam 1 to better collapse and absorb energy during a vehicle collision, especially a side collision, and can improve the collision energy absorption effect of the sill beam 1. In addition, it should be noted that the sill beam 1 can be made of extruded aluminum or sheet metal.

[0067] The bottom of each side B-pillar 2 is connected to the first part 101 on the same side, and the front floor beam 3 is connected between the first parts 101 on both sides. As a further implementation manner, as Figure 8 As shown in the figure, the first part 101 has a first transverse rib 1011 arranged in the left-right direction of the whole vehicle, the third part 103 has a second transverse rib 1031 arranged in the left-right direction of the whole vehicle, and the thickness of the first transverse rib 1011 is less than the thickness of the second transverse rib 1031.

[0068] With the above settings, it is beneficial to achieve different transverse rigidities between the first part 101 and the third part 103, that is, the transverse rigidity of the first part 101 is less than that of the third part 103. Thus, during a vehicle collision, especially a side collision, the sill beam 1 can better collapse and absorb energy, and the collision energy absorption effect of the sill beam 1 can be improved. Moreover, the advantages of forming and preparing by extruded aluminum can be fully utilized, which helps to reduce the design and manufacturing costs of the sill beam 11.

[0069] To further improve the use effect, as Figure 8 As shown in , as a further implementation form, the first part 101 has a vertical rib 1012 arranged along the vertical direction of the vehicle, and the vertical rib 1012 is arranged in a plurality of intervals along the left-right direction of the vehicle. Moreover, each vertical rib 1012 is cross-connected with the first transverse rib 1011, and the first transverse rib 1011 is divided into a plurality of rib segments 1011a arranged in sequence along the left-right direction of the vehicle. At the same time, from the outside to the inside along the left-right direction of the vehicle, the thickness of each rib segment 1011a decreases one by one.

[0070] In this embodiment, by providing a vertical rib 1012 in the first part 101 and making the vertical rib 1012 separate the first transverse rib 1011 into rib segments 1011a with gradually varying thicknesses, multi-stage energy absorption of the first part 101 can be achieved based on the different thicknesses of the rib segments 1011a, which is beneficial for sequential collapse and deformation during a side collision, buffering the collision force, and thus improving the energy absorption effect.

[0071] Here, it is necessary to mention that, continue to refer to Figure 8 As shown in , in a specific implementation, the first transverse ribs 1011 in the first part 101 can preferably be arranged as a plurality of ribs arranged at intervals along the vertical direction of the vehicle, and each first transverse rib 1011 is divided into a plurality of rib segments 1011a with gradually varying thicknesses by a plurality of vertical ribs 1012. At the same time, the vertical ribs 1012 can be arranged as two ribs arranged at intervals, and thereby the first part 101 as a whole can be divided into a primary energy absorption zone, a secondary energy absorption zone, and a tertiary energy absorption zone arranged in sequence. The lateral stiffness of the above three energy absorption zones gradually increases, so that the collision force absorption capacity can be gradually increased, and the crushing energy absorption capacity of the first part 101 can be ensured.

[0072] In addition, combined Figures 8 to 10 As shown in , as a preferred implementation form, the second part 102 of this embodiment includes a connecting rib 1021 connected between the first part 101 and the third part 103. The connecting rib 1021 is bent and includes an outer rib 1021a and an inner rib 1021b connected together. Moreover, the outer rib 1021a is connected to the first part 101, and the inner rib 1021b is connected to the third part 103.

[0073] In this embodiment, the second part 102 is formed of a bent connecting rib 1021, which not only facilitates its design and molding, but also enables the second part 102 to have a better energy absorption capacity based on the bent design. Fig. 9 and Fig.10As shown in , as a preferred implementation form, the outer ribs 1021a can be arranged along the left-right direction of the vehicle, and the inner ribs 1021b can be arranged inclined in the direction pointing to the third part 103. This design can not only realize the bending design of the connecting ribs 1021, but also facilitate the bending and deformation of the connecting ribs 1021 under the impact of the side collision force, which can better promote the collapse energy absorption effect of the second part 102.

[0074] In this embodiment, as a further implementation, the thickness of the connecting rib 1021 is greater than the thickness of the first transverse rib 1011, but not greater than the thickness of the second transverse rib 1031, that is, the thickness of the outer rib 1021a and the inner rib 1021b are both greater than the thickness of the first transverse rib 1011, but not greater than the thickness of the second transverse rib 1031. This design enables the second portion 102 to have a better energy absorption capacity based on the bending design of the second portion 102.

[0075] As a further implementation, in this embodiment, the thickness of the outer rib 1021a is less than the thickness of the inner rib 1021b, so as to further improve the crushing energy absorption performance of the second portion 102. In addition, the connecting ribs 1021 are arranged in a plurality of intervals along the vertical direction of the vehicle, and this design can ensure the connection effect of the second portion 102 between the first portion 101 and the third portion 103 on both sides, which is conducive to ensuring the stability of the overall structure of the sill beam 1.

[0076] In addition, in a specific implementation, the bending angle α of each connecting rib 1021 in the second part 102 can be determined according to different design requirements. For example, the bending angle α of each connecting rib 1021 can be the same, or the bending angle α of at least some connecting ribs 1021 can be different from that of other connecting ribs 1021. As a preferred implementation form, continue to refer to Fig.10 As shown in , in this embodiment, the bending angle α of each connecting rib 1021 gradually increases from bottom to top along the vertical direction of the vehicle.

[0077] At this time, by gradually increasing the bending angle α of each connecting rib 1021 from bottom to top, the differentiated design of the bending angle α of each connecting rib 1021 can be used to make the connecting rib 1021 with a small angle be broken first when a collision occurs, and as the collision force increases, the upper connecting rib 1021 is further disconnected in sequence. In this way, it can adapt to different collision force conditions and avoid other risks caused by the disconnection of all the connecting ribs 1021 during a collision.

[0078] Reference Figure 8As shown in , as a preferred implementation form, the second part 102 located in the middle is connected between the lower part of the first part 101 and the lower part of the third part 103. And, based on this setting, a collapse space K located above the second part 102 is also formed between the first part 101 and the third part. This design can provide a collapse stacking space for the first part 101 during a collision, which helps to improve the collapse deformation effect of the first part 101, and at the same time can reduce the impact of the collapsed and deformed first part 101 and second part 102 on the inner third part 103, which is conducive to ensuring that the third part 103 is not deformed or less deformed, and can better resist side collisions and improve the safety of vehicle collisions.

[0079] As an exemplary implementation form, the width of the above-mentioned collapse space K in the left-right direction of the vehicle can be, for example, greater than 20 mm. It can be understood that, in a specific implementation, in addition to connecting the second part 102 between the lower part of the first part 101 and the lower part of the third part 103, the second part 102 can also be connected between the lower part of the first part 101 and the middle or upper part of the third part 103.

[0080] Combination Figure 8 and Fig.10 As shown in , as a preferred embodiment, in this embodiment, the second transverse ribs 1031 in the third part 103 are also arranged in a plurality of intervals along the vertical direction of the vehicle. In addition, based on the fact that the vertical ribs 1012, the first transverse ribs 1011, the second transverse ribs 1031 and the connecting ribs 1021 are all multiple, in specific implementation, Figure 8 From the cross-section of the threshold beam 1 shown, for example, the cross-section of the threshold beam 1 can be made into a 21-grid structure, that is, 12 cavities are formed in the first part 101 , 2 cavities are formed in the second part 102 , and 7 cavities are formed in the third part 103 .

[0081] Of course, in addition to making the cross-section of the threshold beam 1 a 21-grid structure, it is also possible to design the cavities at various parts of the threshold beam 1 to have other numbers, as long as it adopts the structural design described above and can meet the application requirements of the threshold beam 11.

[0082] It should be mentioned that, based on the first part 101, the second part 102 and the third part 103, in the specific implementation, the shape of the first part 101 can still be designed by referring to the cross-sectional shape of the traditional door sill beam 1 structure in the existing vehicle. For example, the top of the cross section of the first part 101 can be set to have two oppositely arranged inclined surfaces, and the bottom side close to the outside of the vehicle can be set to an inclined surface.

[0083] In addition, for the first transverse rib 1011 in the first part 101, the thickness of each separated rib segment 1011a can be, for example, 2.0 mm, 2.2 mm and 2.5 mm respectively, and in the second part 102, the thickness of the outer rib 1021a and the inner rib 1021b constituting the connecting rib 1021 can be, for example, 3.0 mm and 3.5 mm respectively, and the thickness of the second transverse rib 1031 in the third part 103 can be, for example, 3.5 mm.

[0084] In addition, it should be emphasized that the threshold beam 1 of this embodiment adopts the above structure, especially by arranging the first part 101, the second part 102 and the third part 103 arranged in sequence from the outside to the inside, and by the lateral rigidity of the first part 101 being smaller than that of the third part 103, and the second part 102 being arranged in a bent shape, so that the threshold beam 1 as a whole has an energy absorption zone formed by the first part 101, a bending zone formed by the second part 102, and a rigid zone formed by the third part 103. In this way, the collision energy absorption and protection effect of the threshold beam 11 of this embodiment are further improved.

[0085] The vehicle body structure of this embodiment, by adopting the above design, can provide reliable lateral support for the B-pillar 2, can improve the ability of the B-pillar 2 to resist deformation during a side collision, help reduce the intrusion of the B-pillar 2 into the passenger compartment, and thus can improve the side collision safety of the entire vehicle.

[0086] Embodiment 2

[0087] In addition, this embodiment also relates to a vehicle, which is provided with the vehicle body structure of the first embodiment.

[0088] The vehicle of this embodiment is provided with the body structure of the first embodiment, which can effectively reduce the intrusion of the B-pillar 2 into the driver's cabin during a side collision, thereby improving the side collision safety of the entire vehicle.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body structure, characterized in that: It comprises B-pillars (2) arranged on the left and right sides, a front floor assembly connected to the bottoms of the B-pillars (2) on both sides, and a support member (4) arranged between the front floor assembly and at least one of the B-pillars (2); The support member (4) is arranged obliquely in the left-right direction of the vehicle, and one end of the support member (4) is connected to the B-pillar (2), and the other end of the support member (4) is connected to the front floor assembly, and the B-pillar (2), the front floor assembly and the support member (4) are connected to form a triangular structure.

2. The vehicle body structure according to claim 1, characterized in that: The front floor assembly comprises door sill beams (1) arranged on the left and right sides, and a front floor cross beam (3) connected between the door sill beams (1) on the two sides; The bottom of the B-pillar (2) on each side is connected to the threshold beam (1) on the same side; when viewed from the upper and lower directions of the vehicle, the front floor cross beam (3) is located between the B-pillars (2) on both sides; and one end of the support member (4) connected to the front floor assembly is connected to the front floor cross beam (3).

3. The vehicle body structure according to claim 2, characterized in that: The front floor cross beam (3) comprises a cross beam body (301) and cross beam connecting plates (302) located at left and right ends of the cross beam body (301); The crossbeam body (301) is connected to the threshold beams (1) on each side via the crossbeam connecting plates (302) at both ends, and the support member (4) is connected to the crossbeam connecting plates (302).

4. The vehicle body structure according to claim 3, characterized in that: The cross beam body (301) is roll-formed, and the cross section of the cross beam body (301) is in an "M" shape.

5. The vehicle body structure according to claim 2, characterized in that: The sill beams (1) on both sides are made of extruded aluminum, and when viewed from the front and rear direction of the vehicle, the sill beams (1) on both sides have a first portion (101), a second portion (102) and a third portion (103) which are sequentially connected from the outside to the inside along the left and right direction of the vehicle; A plurality of cavities are formed in the first part (101), the second part (102) and the third part (103), and the second part (102) is arranged in a bent shape in the left-right direction of the vehicle; The bottom of the B-pillar (2) on each side is connected to the first part (101) on the same side, and the front floor cross beam (3) is connected between the first parts (101) on both sides.

6. The vehicle body structure according to claim 5, characterized in that: The first part (101) comprises a first transverse rib (1011) arranged along the left-right direction of the vehicle, the third part (103) comprises a second transverse rib (1031) arranged along the left-right direction of the vehicle, and the thickness of the first transverse rib (1011) is smaller than the thickness of the second transverse rib (1031); The second part (102) includes a connecting rib (1021) connected between the first part (101) and the third part (103); the connecting rib (1021) is bent and includes an outer rib (1021a) and an inner rib (1021b) connected together; the outer rib (1021a) is connected to the first part (101), and the inner rib (1021b) is connected to the third part (103).

7. The vehicle body structure according to claim 6, characterized in that: The thickness of the outer ribs (1021a) is smaller than the thickness of the inner ribs (1021b), and the connecting ribs (1021) are multiple and spaced apart in the vertical direction of the vehicle; From bottom to top along the vertical direction of the vehicle, the bending angle of each connecting rib (1021) gradually increases.

8. The vehicle body structure according to any one of claims 1 to 7, characterized in that: The support member (4) is a pipe member.

9. The vehicle body structure according to claim 8, characterized in that: The support members (4) are provided between the B-pillars (2) on both sides and the front floor assembly, and the support members (4) are arranged in two cross-arrangements, and at least one of the support members (4) is provided with a recessed portion (401) at the intersection of the two support members (4).

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body structure according to any one of claims 1 to 9.

Images