Vehicle body structure and vehicle

Abstract

The vehicle body structure comprises a doorsill, a doorsill supporting piece and a B column lower inner plate, a cavity is formed in the doorsill, and an opening communicating with the cavity is formed in the doorsill; the threshold supporting piece is arranged in the cavity and connected with the inner wall of the threshold. The B-pillar lower inner plate is arranged on one side of the doorsill, and one end of the B-pillar lower inner plate extends into the cavity from the opening and is connected with the doorsill supporting piece. By means of the mode, the stability of connection between the B column and the threshold can be guaranteed, the side collision performance of a whole vehicle is improved, the structure is simple, the weight is light, and cost is low.

Description

Technical Field

[0001] The present application belongs to the automotive field, and specifically relates to a vehicle body structure and a vehicle. Background Art

[0002] With the rapid development of the automotive market, improving vehicle collision safety performance has become a key concern for both society and businesses. As a key structure in side collisions, the rocker structure's inherent strength and the strength of its connections to the A, B, and C pillars are particularly crucial.

[0003] The existing rocker structure is difficult to meet the increasingly stringent requirements for vehicle body rigidity, and is difficult to simultaneously meet the requirements for the stability of the connection between the B-pillar and the rocker, the side impact performance of the entire vehicle, as well as the requirements for lightweight structure and low cost. Utility Model Content

[0004] The present application provides a vehicle body structure and a vehicle, which can ensure the stability of the connection between the B-pillar and the door sill, improve the side collision performance of the entire vehicle, and have a simple structure, light weight and low cost.

[0005] In order to solve the above technical problems, a technical solution adopted in this application is: providing a vehicle body structure, including a door sill, a door sill support and a B-pillar lower inner panel, the door sill having a cavity, and the door sill being provided with an opening connected to the cavity; the door sill support being arranged in the cavity, and the door sill support being connected to the inner wall of the door sill; the B-pillar lower inner panel being arranged on one side of the door sill, and one end of the B-pillar lower inner panel extending from the opening into the cavity and being connected to the door sill support.

[0006] Preferably, the door sill includes an inner door sill panel and an outer door sill panel connected to each other, the cavity is formed between the inner door sill panel and the outer door sill panel, and a first flange is provided at one end of the lower inner panel of the B-pillar, and the first flange extends toward the outer door sill panel.

[0007] Preferably, the threshold support member includes a top plate and two side plates respectively connected to both ends of the top plate, and the top plate is connected to the first flange and the threshold inner plate.

[0008] Preferably, both side panels extend in a direction away from the lower inner panel of the B-pillar and are connected to the inner wall of the door sill; a second flange is provided at one end of the side panel facing the door sill inner panel, and the second flange is connected to the door sill inner panel.

[0009] Preferably, the side panel is provided with a conductive rib, and the conductive rib extends along a first direction, wherein the first direction is a direction from the rocker inner panel to the rocker outer panel.

[0010] Preferably, the vehicle body structure further includes a seat crossbeam, an end of which is connected to the door sill; the conductive rib includes a first conductive rib, and a lower surface of the seat crossbeam is arranged flush with the first conductive rib.

[0011] Preferably, the conductive rib further includes a second conductive rib, which is arranged on a side of the first conductive rib away from the top plate, and the second conductive rib is used to be aligned with the battery beam.

[0012] Preferably, the threshold support comprises a first threshold support and a second threshold support arranged at intervals along the extending direction of the threshold, and the number of the first flanges is two, and the two first flanges are respectively connected to the first threshold support and the second threshold support.

[0013] Preferably, at least one of the first sill support member and the second sill support member is provided with a weight-reducing hole.

[0014] In order to solve the above technical problems, another technical solution adopted in the present application is: providing a vehicle, comprising the vehicle body structure and battery described in any embodiment, wherein the battery includes a battery cross beam.

[0015] Different from the existing technical situation, the beneficial effects of the present application are as follows: the door sill of the vehicle body structure provided by the present application is provided with a door sill support, which effectively transmits the side collision force while increasing the strength of the door sill, increases the collision force transmission path, and reduces the amount of intrusion into the cabin. The lower inner panel of the B-pillar of the present application extends into the interior of the door sill and is fixedly connected to the door sill support, so that the lower inner panel of the B-pillar, the internal cavity of the door sill, and the door sill support form an integrated fixed structure, which can make the door sill and B-pillar structure more stable, and can effectively resist the side impact and rollover at the door sill, and prevent the space inside the vehicle from being squeezed. At the same time, the collision force can be transmitted through the connection between the lower inner panel of the B-pillar and the door sill support, which increases the force transmission path, reduces the amount of intrusion into the cabin, and can achieve an improvement in the safety factor of the vehicle body with a lightweight structure. In addition, the vehicle body structure provided by the present application has a simple structure, is easy to manufacture, and has low production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the vehicle body structure of the present application;

[0018] Figure 2 yes Figure 1sectional view of

[0019] Figure 3 This is a structural schematic diagram of an embodiment of the vehicle body structure of the present application, with the door sill outer panel hidden;

[0020] Figure 4 This is a structural diagram of an embodiment of a threshold support member of the present application;

[0021] Figure 5 is a structural schematic diagram of another embodiment of the vehicle body structure of the present application;

[0022] Figure 6 is a cross-sectional view of another embodiment of the vehicle body structure of the present application;

[0023] Figure 7 It is a structural schematic diagram of another embodiment of the threshold support member of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] See also Figure 1 and Figure 2 , Figure 1 This is a structural diagram of an embodiment of the vehicle body structure of the present application. Figure 2 yes Figure 1 Cross-sectional view. The vehicle body structure 100 includes a door sill 10, a door sill support 20, and a B-pillar lower inner panel 30, all of which are made of steel. The door sill 10 is a strip-shaped structure extending along the front-to-rear direction of the vehicle body (second direction Y). The door sill 10 has a cavity 101. The top of the door sill 10 is provided with an opening (not marked) that connects to the cavity 101, and the opening extends along the second direction Y. The door sill support 20 is disposed in the cavity 101. The door sill support 20 is connected to the inner wall of the door sill 10. The door sill support 20 is supported inside the door sill 10 to absorb energy and transmit side impact forces to the inner side of the door sill 10. The number of door sill supports 20 can be one or more, and multiple door sill supports 20 are spaced apart along the second direction Y. The B-pillar lower inner panel 30 is disposed on one side of the door sill 10. One end of the B-pillar lower inner panel 30 extends from the opening into the cavity 101 and is connected to the door sill support 20. The B-pillar lower inner panel 30 is part of the vehicle's B-pillar (not shown). Its bottom is connected to the side sill 10. The width of the B-pillar lower inner panel 30 in the second direction Y gradually increases from top to bottom. The bottom of the B-pillar lower inner panel 30 extends through the opening into the cavity 101 and is fixedly connected to at least one side sill support member 20.

[0026] The vehicle body structure 100 provided in the present application has a sill support 20 provided in the door sill 10. The sill support 20 effectively transmits side collision forces while increasing the strength of the sill 10, thereby increasing the collision force transmission path and reducing the amount of intrusion into the vehicle cabin. The B-pillar lower inner panel 30 of the present application extends into the interior of the door sill 10 and is fixedly connected to the sill support 20, so that the B-pillar lower inner panel 30, the internal cavity 101 of the door sill 10, and the door sill support 20 form an integrated fixed structure, which can make the door sill 10 and the B-pillar structure more stable, effectively resist the side impact rollover at the door sill 10, and prevent the space inside the vehicle from being squeezed. At the same time, the collision force can be transmitted through the connection between the B-pillar lower inner panel 30 and the door sill support 20, increasing the force transmission path, reducing the amount of intrusion into the vehicle cabin, and improving the safety factor of the vehicle body with a lightweight structure. The vehicle body structure 100 provided in the present application has a simple structure, is easy to manufacture, and has low production costs.

[0027] Optionally, continue to Figure 1 and Figure 2 The sill 10 includes an inner sill panel 11 and an outer sill panel 12 connected to each other. Both the inner sill panel 11 and the outer sill panel 12 are long strip structures extending along the second direction Y. The cross-sections of both are laterally arranged in an "X" shape. The "X"-shaped opening of the inner sill panel 11 is arranged toward the outer sill panel 12, and the "X"-shaped opening of the outer sill panel 12 is arranged toward the inner sill panel 11. The top flanges and bottom flanges of the inner sill panel 11 and the outer sill panel 12 are arranged opposite to each other and welded together to form a cavity 101. A first flange 31 is provided at one end of the lower inner panel 30 of the B-pillar, and the first flange 31 extends toward the outer sill panel 12. Optionally, refer to Figure 3 , Figure 3 This is a schematic diagram of an embodiment of the vehicle body structure of the present application, omitting the rocker outer panel. In this embodiment, two first flanges 31 are provided at the bottom of the B-pillar lower inner panel 30, spaced apart along the second direction Y. The rocker support 20 is provided with two corresponding first flanges 31, one each for the first rocker support 20a and the second rocker support 20b. Both first flanges 31 extend toward one side of the rocker outer panel 12 and are welded to the first and second rocker supports 20a and 20b, respectively, further enhancing the stability of the connection between the B-pillar lower inner panel 30 and the rocker 10. Because the B-pillar lower inner panel 30 extends toward the rocker outer panel 12 via the first flanges 31 and is fixedly connected to the rocker support 20, when the rocker 10 is impacted, the impact force is transmitted sequentially through the rocker outer panel 12, the rocker support 20, and the first flanges 31 of the B-pillar lower inner panel 30 to the B-pillar. This increases the impact force transmission path, disperses the impact force, and reduces intrusion into the cabin.

[0028] Optionally, continue to Figure 1 and Figure 2The vehicle body structure 100 further includes a B-pillar reinforcement plate 40 , which is fixed to the side of the B-pillar lower inner panel 30 facing the rocker outer panel 12 , and the bottom of the B-pillar reinforcement plate 40 is welded to the side of the rocker outer panel 12 away from the rocker inner panel 11 to increase the strength of the B-pillar.

[0029] Optionally, see Figure 4 Combined with Figure 3 , Figure 4 The figure is a schematic structural diagram of one embodiment of a sill support member according to the present application. The sill support member 20 comprises a top plate 21 and two side plates 22 connected to either end of the top plate 21. The top plate 21 is connected to a first flange 31 and the sill inner panel 11. The sill support member 20 also has an overall "F"-shaped structure. The portion of the top plate 21 near the sill outer panel 12 is welded to the first flange 31, while the portion of the top plate 21 near the sill inner panel 11 is welded to the sill inner panel 11. This arrangement connects the sill support member 20, sill inner panel 11, and sill outer panel 12 into a single, integrated unit, enhancing the structural stability of the sill 10. This allows impact forces to be transmitted inward sequentially through the sill outer panel 12, the top plate 21 of the sill support member 20, and the sill inner panel 11. Furthermore, because the first flange 31 and the sill inner panel 11 are welded to different portions of the top plate 21, multiple layers of welding are avoided at the same location, ensuring weld stability. Optionally, the top plate 21 and the sill outer panel 12 are positioned flush against each other but not fixedly connected.

[0030] Further, see Figure 4 Both side panels 22 extend away from the B-pillar lower inner panel 30 and connect to the inner wall of the sill 10. The two side panels 22 are supported at the bottom of the sill 10, ensuring that the sill support member 20 is stably supported within the sill 10. Because each sill support member 20 has two side panels 22, the impact force can be transmitted inward through the two side panels 22. Specifically, the end of the side panel 22 facing the sill inner panel 11 is provided with a second flange 221. The second flange 221 is welded to the inner wall of the sill inner panel 11 and extends outward from the side panel 22. Optionally, the ends of the two side panels 22 facing the sill outer panel 12 are provided with a fourth flange 222. The fourth flange 222 extends outward from the side panel 22 and is in contact with the sill outer panel 12 but is not fixedly connected, thereby strengthening support for the sill outer panel 12. A third flange 223 is provided at the bottom end of the side panel 22, and the third flange 223 is welded to the bottom wall of the threshold inner panel 11. The third flange 223 extends outward from the side panel 22. The stability of the connection between the threshold support 20 and the threshold inner panel 11 is ensured by setting the second flange 221 and the third flange 223.

[0031] Optionally, continue to Figure 4The side panels 22 are provided with conductive ribs 23 extending along a first direction X, where the first direction X is the direction from the rocker inner panel 11 to the rocker outer panel 12. The conductive ribs 23 can be formed by recessing or protruding the side panels 22 inward. The conductive ribs 23 extend along the left-right direction of the vehicle body (i.e., the first direction X). The conductive ribs 23 increase the rigidity of the side panels 22 while also forming a force transmission path within the side panels 22. When the vehicle body is subjected to a side impact, the external impact force is sequentially transmitted through the rocker outer panel 12, the conductive ribs 23 on the rocker support member 20, the rocker inner panel 11, and finally to the internal vehicle frame structure. Optionally, there may be one or more conductive ribs 23.

[0032] Optionally, see Figure 5 , Figure 5 It is a structural schematic diagram of another embodiment of the vehicle body structure of the present application. The vehicle body structure 100 also includes a seat crossbeam (not shown), which is supported at the bottom of a seat (not shown). Specifically, in this embodiment, the seat crossbeam includes a front seat crossbeam (not shown) and a rear seat crossbeam 50, both extending in a first direction X. The two ends of the front seat crossbeam and the rear seat crossbeam 50 are respectively connected to the door sills 10 on both sides. Specifically, the end of the rear seat crossbeam 50 is welded to the side of the door sill inner panel 11 facing away from the door sill outer panel 12. The above arrangement fixes the rear seat crossbeam 50 and the door sill 10 as one body. One part of the external impact force passes through the top plate 21 of the door sill support member 20 and is then transmitted to the rear seat crossbeam 50 through the door sill inner panel 11. Furthermore, a rear crossbeam reinforcement plate 51 is fixed to the top of the rear seat crossbeam 50. The end of the rear crossbeam reinforcement plate 51 extends toward the door sill 10 and is welded to the top of the door sill inner panel 11 to further increase stability. Moreover, one part of the above external impact force is transmitted to the upper surface of the rear seat crossbeam 50 through the door sill inner panel 11 and the rear crossbeam reinforcement plate 51. The conductive ribs 23 include a first conductive rib 231, which is flush with the lower surface of the rear seat cross member 50. This arrangement allows the remaining portion of the external impact force to pass through the first conductive rib 231 of the rocker support 20 and be transmitted to the lower surface of the rear seat cross member 50. Both the upper and lower surfaces of the rear seat cross member 50 can transmit the impact force, ensuring passenger compartment safety.

[0033] Optionally, the conductive ribs 23 also include a second conductive rib 232, which is disposed on the side of the first conductive rib 231 facing away from the top plate 21, i.e., below the first conductive rib 231. The first and second conductive ribs 231, 232 are arranged in parallel, and the second conductive rib 232 is configured to align with the battery beam. For new energy vehicles, the vehicle also includes a battery (not shown), which is located below the rear seat beam 50 and includes a battery beam 60. This arrangement allows another path of the external impact force to pass through the second conductive rib 232 of the rocker support 20 before being transferred to the battery beam 60, further increasing the number of paths for the impact force to be transmitted. In other embodiments, the number of conductive ribs 23 may also be greater.

[0034] See Figure 6 , Figure 6 This is a cross-sectional view of another embodiment of the vehicle body structure of the present application. The B-pillar reinforcement plate and rocker outer panel are omitted. Arrows in the figure indicate four force transmission paths. The first force transmission path W1 transmits force to the lower surface of the rear seat cross member 50 via the first conductive rib 231. The second force transmission path W2 transmits force to the upper portion of the B-pillar and the roof cross member (not shown) via the B-pillar reinforcement plate (not shown), the rocker outer panel (not shown), the top plate 21 of the rocker support 20, and the first flange 31 of the B-pillar lower inner panel 30. The third force transmission path W3 transmits force to the upper surface of the rear seat cross member 50 via the top plate 21 of the rocker support 20, the rocker inner panel 11, and the rear cross member reinforcement plate 51. The fourth force transmission path W4 transmits force to the battery cross member 60 via the second conductive rib 232. The vehicle body structure 100 of this embodiment not only ensures its structural strength but also provides multiple force transmission paths. These multiple force transmission paths disperse side impact forces to ensure passenger compartment safety.

[0035] Alternatively, see Figure 7 , Figure 7 This is a structural diagram of another embodiment of the threshold support member of the present application. Figure 4 The structure of the illustrated sill support 20 is essentially the same, differing in that through-holes 224 are provided in the side panel 22. These through-holes 224 are located between the first conductive rib 231 and the second conductive rib 232, and on the side of the second conductive rib 232 facing away from the first conductive rib 231, i.e., below the second conductive rib 232. The provision of through-holes 224 in the sill support 20 reduces its weight. The provision of through-holes 224 in one of the first sill support 20a and the second sill support 20b ensures both strength and weight. In this embodiment, the first sill support 20a is located at the rear of the vehicle body relative to the second sill support 20b, and the through-holes 224 are provided in the side panel 22 of the first sill support 20a. In other embodiments, the through-holes 224 may be provided in a different number, or located only below the second conductive rib 232; this is not a specific limitation in this application.

[0036] The present application also provides a vehicle, comprising a vehicle body structure 100 according to any of the aforementioned embodiments and a battery, wherein the battery includes a battery cross member 60. The vehicle body structure 100 provided in the present application is applicable to different vehicle types, such as sedans, SUVs (sport utility vehicles), or MPVs (multi-purpose vehicles).

[0037] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle body structure, characterized in that: include: A threshold, wherein the threshold has a cavity therein and an opening is provided on the threshold for communicating with the cavity, the threshold comprising an inner threshold panel and an outer threshold panel connected to each other, wherein the inner threshold panel and the outer threshold panel enclose the cavity; a threshold support member, disposed in the cavity, the threshold support member being connected to an inner wall of the threshold; The B-pillar lower inner panel is arranged on one side of the door sill, one end of the B-pillar lower inner panel extends from the opening into the cavity and is connected to the door sill support, and one end of the B-pillar lower inner panel is provided with a first flange, which extends toward the door sill outer panel.

2. The vehicle body structure according to claim 1, wherein: The threshold support member includes a top plate and two side plates respectively connected to both ends of the top plate. The top plate is connected to the first flange and the threshold inner plate.

3. The vehicle body structure according to claim 2, characterized in that: The two side panels extend in a direction away from the lower inner panel of the B-pillar and are connected to the inner wall of the door sill; a second flange is provided at one end of the side panel facing the door sill inner panel, and the second flange is connected to the door sill inner panel.

4. The vehicle body structure according to claim 2, wherein: The side panel is provided with a conductive rib, and the conductive rib extends along a first direction, wherein the first direction is a direction from the rocker inner panel to the rocker outer panel.

5. The vehicle body structure according to claim 4, characterized in that: Also includes: a seat crossbeam, an end of which is connected to the door sill; The conductive ribs include first conductive ribs, and the lower surface of the seat cross beam is arranged flush with the first conductive ribs.

6. The vehicle body structure according to claim 5, characterized in that: The conductive rib further includes a second conductive rib, which is arranged on a side of the first conductive rib away from the top plate, and is used to be aligned with the battery beam.

7. The vehicle body structure according to claim 1, wherein: The threshold support member includes a first threshold support member and a second threshold support member spaced apart along the extending direction of the threshold. There are two first flanges, which are respectively connected to the first threshold support member and the second threshold support member.

8. The vehicle body structure according to claim 7, wherein: At least one of the first sill support and the second sill support is provided with a weight-reducing hole.

9. A vehicle, characterized in that: include: The vehicle body structure and battery according to any one of claims 1 to 8, wherein the battery includes a battery cross beam.

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