Side wall assembly and vehicle

Abstract

The utility model discloses a side wall assembly and a vehicle. The side wall assembly comprises a B column inner plate and a B column outer plate, the B column reinforcing plate comprises a first main plate part and first flanging parts, the first main plate part extends in the vertical direction and is arranged on the outer side of the B column inner plate in the left-right direction at intervals, and the first flanging parts are arranged on the front side and the rear side of the first main plate part; the first flanging part is bent and extends towards the inner side in the left-right direction relative to the first main plate part and is connected with the B column inner plate, and an energy absorption cavity is jointly defined between the B column reinforcing plate and the B column inner plate. Therefore, the energy absorption cavity is defined between the B column reinforcing plate and the B column inner plate, so that the collision resistance and the pressure resistance of the B column can be improved, the strength of the B column can be improved, the structural reliability of the side wall assembly can be improved, and the vehicle safety can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a side wall assembly and a vehicle. Background Art

[0002] The B-pillar is an important part of the vehicle body structure, playing a decisive role in side collision, roof crush and rollover of the vehicle, and attracting more and more attention in the vehicle manufacturing process.

[0003] In the prior art, the structural strength of the B-pillar of the vehicle is small. When the vehicle is subjected to roof crush, collision or rollover, the B-pillar is easily damaged by itself, and the life safety of the passengers and drivers inside the vehicle cannot be guaranteed. In addition, the connection strength between the B-pillar and the sill beam and the upper side beam is small. When the vehicle is impacted and collided, the connection between the B-pillar and the sill beam and the upper side beam is unstable, and the structural reliability of the vehicle is low. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a side wall assembly with better structural reliability.

[0005] The utility model further provides a vehicle.

[0006] The side wall assembly according to the embodiment of the utility model includes: an upper side beam reinforcement plate; a sill beam, the sill beam is arranged at intervals below the upper side beam reinforcement plate, a B-pillar inner panel, the B-pillar inner panel is connected between the upper side beam reinforcement plate and the sill beam; a B-pillar reinforcement plate, the B-pillar reinforcement plate is connected between the upper side beam reinforcement plate and the sill beam, the B-pillar reinforcement plate includes a first main board portion and a first flanging portion, the first main board portion extends in the up-down direction and is arranged at intervals outside the B-pillar inner panel in the left-right direction, the first flanging portion is arranged on the front and rear sides of the first main board portion, the first flanging portion extends in a bent manner towards the inner side in the left-right direction relative to the first main board portion and is connected to the B-pillar inner panel, and an energy absorption cavity is jointly defined between the B-pillar reinforcement plate and the B-pillar inner panel.

[0007] Thus, by arranging the first main board portion extending up and down on the B-pillar reinforcement plate at intervals outside the B-pillar inner panel in the left-right direction, and arranging the first flanging portions extending in a bent manner towards the inner side in the left-right direction on the front and rear sides of the first main board portion, an energy absorption cavity can be defined between the B-pillar reinforcement plate and the B-pillar inner panel, thereby improving the strength of the B-pillar, improving the structural reliability of the side wall assembly, and further being beneficial to improving vehicle safety.

[0008] According to some embodiments of the present utility model, the inner panel of the B-pillar includes a second main board portion and a second flanging portion. The second main board portion is disposed at intervals inside the first main board portion in the left-right direction. The second flanging portion is disposed on the front and rear sides of the second main board portion and extends by bending outward in the left-right direction relative to the second main board portion. The second flanging portion is connected to the first flanging portion.

[0009] According to some embodiments of the present utility model, first connection portions are provided on both the upper side beam reinforcement plate and the sill beam. Second connection portions are provided at both the upper and lower ends of the B-pillar reinforcement plate. Both the first connection portion and the second connection portion are in a Z-shaped stepped form. The second connection portion is located outside the upper side beam reinforcement plate and the sill beam in the left-right direction and is fixedly connected to the first connection portion.

[0010] According to some embodiments of the present utility model, at least a part of the upper and lower ends of the first main board portion and the first flanging portion together form the second connection portion.

[0011] According to some embodiments of the present utility model, support portions are provided at both the upper and lower ends of the first main board portion. The support portions at the upper and lower ends of the first main board portion are respectively and fixedly connected in a fitting manner in the left-right direction with at least a part of the upper side beam reinforcement plate and the sill beam. The second connection portion is located at at least one end in the front-rear direction of the support portion.

[0012] According to some embodiments of the present utility model, the second connection portion is located at both ends in the front-rear direction of the support portion.

[0013] According to some embodiments of the present utility model, the B-pillar reinforcement plate includes a main body section and connection sections. The connection sections are provided at both the upper and lower ends of the main body section. The connection sections protrude and extend outward on both sides in the front-rear direction relative to the main body section. Both the second connection portion and the support portion are provided on the connection sections.

[0014] According to some embodiments of the present utility model, arc transition sections are provided between both sides in the front-rear direction of the main body section and the connection sections.

[0015] According to some embodiments of the present utility model, a plurality of electrophoresis anti-shielding holes are provided at intervals on the B-pillar reinforcement plate.

[0016] The vehicle according to the present utility model includes the side wall assembly described above.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a schematic diagram of a side wall assembly according to an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 a sectional view taken along the A-A direction in

[0021] Figure 3 is a partial schematic diagram of a side wall assembly according to an embodiment of the present utility model;

[0022] Figure 4 is Figure 3 a sectional view taken along the B-B direction in

[0023] Figure 5 is Figure 3 a sectional view taken along the C-C direction in

[0024] Figure 6 is Figure 3 a sectional view taken along the D-D direction in

[0025] Figure 7 is Figure 3 a sectional view taken along the E-E direction in

[0026] Reference numerals:

[0027] 100, side wall assembly;

[0028] 10, upper side beam reinforcement plate; 20, sill beam;

[0029] 30, inner B-pillar panel; 31, second main board part; 32, second flanging part;

[0030] 40, B-pillar reinforcement plate; 41, first main board part; 411, support part; 42, first flanging part; 43, second connecting part; 44, main body section; 441, arc transition section; 45, connecting section; 46, electrophoresis shielding hole;

[0031] 50, energy absorption cavity; 60, first connecting part. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0033] The following figure is referred to Figures 1-7 to describe the side wall assembly 100 according to an embodiment of the present utility model. The side wall assembly 100 of the embodiment of the present utility model can be applied to a vehicle.

[0034] Combined Figures 1-3 As shown, the side wall assembly 100 according to an embodiment of the present utility model may mainly include: an upper side beam reinforcement plate 10, a sill beam 20, an inner B-pillar panel 30, and a B-pillar reinforcement plate 40. Among them, the sill beam 20 is spaced below the upper side beam reinforcement plate 10, and the inner B-pillar panel 30 is connected between the upper side beam reinforcement plate 10 and the sill beam 20. In this way, force can be transmitted between the upper side beam reinforcement plate 10, the inner B-pillar panel 30, and the sill beam 20, and the force can be dispersed in the side wall assembly 100. Furthermore, deformation caused by excessive local force on the side wall assembly 100 can be prevented, and the basic structural strength of the side wall assembly 100 can be ensured.

[0035] Furthermore, the B-pillar reinforcement plate 40 is connected between the upper side beam reinforcement plate 10 and the sill beam 20. The B-pillar reinforcement plate 40 includes a first main board portion 41 and a first flanging portion 42. The first main board portion 41 extends in the up-and-down direction and is spaced outside the inner B-pillar panel 30 in the left-and-right direction. The first flanging portion 42 is provided on the front and rear sides of the first main board portion 41. The first flanging portion 42 bends and extends toward the inside in the left-and-right direction relative to the first main board portion 41 and is connected to the inner B-pillar panel 30. An energy absorption cavity 50 is jointly defined between the B-pillar reinforcement plate 40 and the inner B-pillar panel 30.

[0036] Specifically, in the embodiment of the present utility model, the B-pillar reinforcement plate 40 is connected to the inner B-pillar panel 30 to strengthen the structural strength of the vehicle B-pillar. The B-pillar reinforcement plate 40 includes a first main board portion 41 and a first flanging portion 42 to form the basic structure of the B-pillar reinforcement plate 40. The first main board portion 41 extends up and down, and its upper and lower ends are respectively connected to the upper side beam reinforcement plate 10 and the sill beam 20. In this way, force can be transmitted between the upper side beam reinforcement plate 10, the B-pillar reinforcement plate 40, and the sill beam 20, so that the force received by the upper side beam reinforcement plate 10 can be dispersed to the sill beam 20 through the B-pillar reinforcement plate 40 to strengthen the stiffness of the vehicle body in the up-and-down direction. When the roof is stressed, the force can be dispersed and transmitted to the sill beam 20 through the B-pillar reinforcement plate 40. This is beneficial to reducing the force on the upper side beam reinforcement plate 10 and the inner B-pillar panel 30, preventing deformation caused by excessive force on the upper side beam reinforcement plate 10 and the inner B-pillar panel 30, and further beneficial to improving the structural reliability of the side wall assembly 100 of the vehicle.

[0037] Furthermore, the first main board portion 41 and the inner B-pillar panel 30 are spaced in the left-and-right direction and are located outside the inner B-pillar panel 30, that is, the inner B-pillar panel 30 is located inside the B-pillar reinforcement plate 40 in the left-and-right direction. In this way, the B-pillar reinforcement plate 40 can play a protective role for the inner B-pillar panel 30. When a side collision occurs to the vehicle, the B-pillar reinforcement plate 40 can be preferentially stressed, and the collision force can be preferentially dispersed along the B-pillar reinforcement plate 40, and further the force on the inner B-pillar panel 30 can be reduced.

[0038] Further, the first flanging portion 42 is located on the front and rear sides of the first main board portion 41, so that the first flanging portion 42 can extend in the up and down direction on the front and rear sides of the first main board portion 41, and the first flanging portion 42 extends towards the inner panel 30 of the B-pillar relative to the first main board portion 41. This not only facilitates the connection between the first flanging portion 42 and the inner panel 30 of the B-pillar, but also increases the connection area between the B-pillar reinforcement plate 40 and the inner panel 30 of the B-pillar. The force on the B-pillar reinforcement plate 40 can be dispersed to the inner panel 30 of the B-pillar through the first flanging portion 42 extending up and down, so that the inner panel 30 of the B-pillar is stressed dispersedly, which can improve the transmission efficiency of the force between the B-pillar reinforcement plate 40 and the inner panel 30 of the B-pillar, thereby enhancing the connection strength between the B-pillar reinforcement plate 40 and the inner panel 30 of the B-pillar, and improving the strengthening effect of the B-pillar reinforcement plate 40 on the inner panel 30 of the B-pillar.

[0039] Still further, the B-pillar reinforcement plate 40 composed of the first main board portion 41 and the first side board portion can define an energy absorption box with the inner panel 30 of the B-pillar. When the vehicle is subjected to top pressure, collision or rollover, the force can be preferentially dispersed to the side wall assembly 100 through the B-pillar reinforcement plate 40. When the force on the B-pillar of the vehicle is too large, the energy absorption box can preferentially collapse to absorb the external force received by the B-pillar, thereby reducing the external force received by the inner panel 30 of the B-pillar. This can effectively prevent the inner panel 30 of the B-pillar from deforming when the vehicle is subjected to top pressure, collision or rollover, ensuring the space safety inside the vehicle. Such a setting can enhance the structural reliability of the side wall assembly 100 and improve the safety performance of the whole vehicle.

[0040] Combined Figure 2 As shown, the inner panel 30 of the B-pillar includes a second main board portion 31 and a second flanging portion 32. The second main board portion 31 is arranged at intervals on the inner side of the first main board portion 41 in the left-right direction. The second flanging portion 32 is arranged on the front and rear sides of the second main board portion 31 and extends by bending towards the outer side in the left-right direction relative to the second main board portion 31. The second flanging portion 32 is connected to the first flanging portion 42.

[0041] Specifically, the second main board portion 31 on the inner panel 30 of the B-pillar corresponds to the first main board portion 41 on the B-pillar reinforcement plate 40, and the second main board portion 31 is arranged at intervals on the inner side of the first main board portion 41 in the left-right direction. This can create an interval space between the inner panel 30 of the B-pillar and the B-pillar reinforcement plate 40, which is suitable for forming an energy absorption cavity 50.

[0042] Further, the second flanging portion 32 on the inner panel 30 of the B-pillar is located on the front and rear sides of the second main board portion 31 and extends in the up and down direction. This can make the second flanging portion 32 correspond to the first flanging portion 42 on the B-pillar reinforcement plate 40. The second flanging portion 32 extends by bending towards the B-pillar reinforcement plate 40 relative to the second main board portion 31, which facilitates the connection between the first flanging portion and the second flanging portion 32.

[0043] Thus, the cross-sections of the B-pillar reinforcement plate 40 and the inner B-pillar plate 30 are both in a "ji" shape structure, which can form a closed structure for the cross-sections of the B-pillar reinforcement plate 40 and the inner B-pillar plate 30, so as to increase the cross-sectional strength and stiffness of the B-pillar reinforcement plate 40 and the inner B-pillar plate 30. This is beneficial to improving the compressive capacity of the vehicle's B-pillar in the up and down directions, and thus beneficial to improving the structural reliability of the vehicle's side wall assembly 100.

[0044] Further, the second main board part 31, the second flanging part 32, the first main board part 41 and the first flanging part 42 jointly define an energy absorption cavity 50, and the B-pillar reinforcement plate 40 and the inner B-pillar plate 30 achieve force transfer and dispersion through the first flanging part 42 and the second flanging part 32. When the vehicle is subjected to top pressure, collision or rollover, if the B-pillar reinforcement plate 40 is subjected to too much force, the first main board part 41 and the first flanging part 42 can deform, so that the energy absorption cavity 50 collapses preferentially to absorb a large part of the force. This process can reduce the dispersion of force to the inner B-pillar plate 30, and thus can improve the structural reliability of the inner B-pillar plate 30.

[0045] Combined Figure 4 and Figure 5 As shown, first connection parts 60 are provided on both the upper side beam reinforcement plate 10 and the sill beam 20, and second connection parts 43 are provided at both the upper and lower ends of the B-pillar reinforcement plate 40. The first connection parts 60 and the second connection parts 43 are both in a Z-shaped stepped shape. The second connection parts 43 are located outside the upper side beam reinforcement plate 10 and the sill beam 20 in the left and right directions and are connected and fixed to the first connection parts 60.

[0046] Specifically, the upper side beam reinforcement plate 10 and the B-pillar reinforcement plate 40 are connected through the first connection parts 60 and the second connection parts 43 which are both in a Z-shaped stepped shape. At the same time, the sill beam 20 and the B-pillar reinforcement plate 40 are connected through the first connection parts 60 and the second connection parts 43 which are both in a Z-shaped stepped shape. With such a setting, on the one hand, the connection between the first connection parts 60 and the second connection parts 43 is more stable and firm. When the upper side beam reinforcement plate 10 is subjected to force, the force can be quickly transferred from the upper side beam reinforcement plate 10 to the B-pillar reinforcement plate 40 and then transferred to the sill beam 20 through the B-pillar reinforcement plate 40, which can improve the structural reliability of the vehicle's side wall assembly 100. On the other hand, it is also possible to extend the dimensions of the first connection parts 60 and the second connection parts 43 in the front and rear directions while keeping the dimensions of the upper side beam inner plate and the B-pillar reinforcement plate 40 unchanged, so as to further increase the connection strength and stiffness between the first connection parts 60 and the second connection parts 43.

[0047] Further, the second connection parts 43 are located outside the upper side beam reinforcement plate 10 and the sill beam 20 in the left and right directions, which can make the B-pillar reinforcement plate 40 located outside the side beam reinforcement plate and the sill beam 20, facilitating the installation convenience of the B-pillar reinforcement plate 40 in the side wall assembly 100.

[0048] Combined Figures 1-5 As shown, at least part of the upper and lower direction ends of the first main board part 41 and the first flanging part 42 together form a second connecting part 43. With this setting, the second connecting part 43 can be integrally formed with the first main board part 41 and the first flanging part 42 on the B-pillar reinforcement plate 40. This can not only improve the production convenience of the B-pillar reinforcement plate 40, but also help to improve the structural strength of the B-pillar reinforcement plate 40, and further improve the structural reliability of the vehicle's side panel assembly 100.

[0049] Combined Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, support parts 411 are provided at both the upper and lower ends of the first main board part 41. The support parts 411 at the upper and lower ends of the first main board part 41 are respectively and fixedly connected in a left-right direction by fitting with at least part of the upper side beam reinforcement plate 10 and the sill beam 20. The second connecting part 43 is located at at least one end in the front-back direction of the support part 411.

[0050] Specifically, support parts 411 are provided at the upper and lower ends of the first main board part 41. The upper support part 411 is used for fixedly connecting with the upper side beam reinforcement plate 10, and the lower support part 411 is used for fixedly connecting with the sill beam 20. This can enable the upper side beam reinforcement plate 10 and the sill beam 20 to respectively support the upper and lower ends of the B-pillar reinforcement plate 40.

[0051] In the embodiment of the present utility model, the support parts 411 at the upper and lower ends of the B-pillar reinforcement plate 40 are respectively parallel to the upper side beam reinforcement plate 10 and the sill beam 20 in the up-down direction. This can enable the support part 411 to bear more forces in the up-down direction as much as possible, and enable more forces to be transmitted up and down in the B-pillar reinforcement plate 40. Thus, the decomposition efficiency of the forces passing through the B-pillar reinforcement plate 40 can be improved, and the forces can be quickly decomposed and consumed, and further help to improve the structural reliability of the vehicle's side panel assembly 100.

[0052] Furthermore, the support parts 411 at the upper and lower ends of the B-pillar reinforcement plate 40 are respectively and connected by left-right fitting with the upper side beam reinforcement plate 10 and the sill beam 20, which can increase the connection area between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20 in the left-right direction. Further, the connection strength between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20 in the left-right direction can be improved. In this way, when the vehicle has a side collision, the ability of the B-pillar reinforcement plate 40 to resist the side collision can be improved, which is beneficial to enhancing the side collision resistance ability of the side panel assembly 100.

[0053] Further, the second connecting portion 43 is connected to the supporting portion 411 and is located at at least one end of the supporting portion 411 in the front-back direction. With such an arrangement, the dimensions of the upper and lower ends of the B-pillar reinforcement plate 40 in the front-back direction can be increased, the connection areas between the upper and lower ends of the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20 can be increased respectively, and further, the connection strengths between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20 can be improved, and the structural reliability of the vehicle side wall assembly 100 can be enhanced.

[0054] Combined with Figures 3-7 As shown, the second connecting portion 43 is located at both ends of the supporting portion 411 in the front-back direction. With such an arrangement, on the one hand, the dimensions of the upper and lower ends of the B-pillar reinforcement plate 40 in the front-back direction can be increased, and the connection strengths between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20 can be improved; on the other hand, the force uniformity at the front and rear ends of the supporting portion 411 can be improved, and further, the force dispersion on the supporting portion 411 in the front-back direction can be reduced, so that the B-pillar reinforcement plate 40 can bear more forces in the up-down direction, and thus the force dispersion efficiency can be improved.

[0055] Combined with Figure 3 As shown, the B-pillar reinforcement plate 40 includes a main body section 44 and a connecting section 45. The connecting section 45 is arranged at the upper and lower ends of the main body section 44, and the connecting section 45 protrudes and extends towards the two sides in the front-back direction relative to the main body section 44. Both the second connecting portion 43 and the supporting portion 411 are arranged on the connecting section 45. Specifically, the connecting end is mainly used for connecting the B-pillar reinforcement plate 40 with the upper side beam reinforcement plate 10 and the sill beam 20, and the main body portion is mainly used for transmitting and dispersing the forces on the B-pillar reinforcement plate 40.

[0056] Further, the supporting portion 411 corresponds to the main body portion in the up-down direction, which can enable the B-pillar reinforcement plate 40 to be fully stressed in the up-down direction to improve the force-bearing capacity of the B-pillar reinforcement plate 40 in the up-down direction. The second connecting portion 43 is located at both ends of the supporting portion 411 in the front-back direction, which can enable the connecting section 45 to protrude and extend towards the two sides in the front-back direction relative to the main body section 44. In this way, the B-pillar reinforcement plate 40 in the present invention can be in an I-shaped structure, the dimensions of the connecting end in the front-back direction can be increased, and further, the connection areas between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20 can be increased. In this way, not only the connection strengths between the B-pillar reinforcement plate 40 and the side beam reinforcement plate and the sill beam 20 can be improved, but also the force transmission efficiency in the side wall assembly 100 can be improved, which is beneficial to improving the force decomposition efficiency.

[0057] Combined with Figure 3As shown, arc transition sections 441 are provided between both sides in the front-rear direction of the main body section 44 and the connecting section 45. With such a setting, on the one hand, the connection size of the B-pillar reinforcement plate 40 can be increased, which is beneficial to dispersing the force on the B-pillar reinforcement plate 40 and improving the transmission efficiency of the force on the B-pillar reinforcement plate 40, thereby increasing the connection strength between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20. On the other hand, stress concentration between the main body section 44 and the connection end can be prevented, and the structural reliability of the B-pillar reinforcement plate 40 can be enhanced.

[0058] Combined with Figure 3 As shown, a plurality of electrophoretic shielding prevention holes are provided on the B-pillar reinforcement plate 40 at intervals. With such a setting, during the production process of the vehicle, the fluidity of the process electrophoretic paint on the B-pillar reinforcement plate 40 can be improved, electrophoresis defects of the B-pillar reinforcement plate 40 can be avoided, and thus the corrosion resistance of the B-pillar reinforcement plate 40 can be improved.

[0059] According to an embodiment of the present invention, the vehicle includes the side wall assembly 100 in the embodiment of the present invention. The side wall assembly 100 of the present invention can improve the anti-collision and compressive resistance of the vehicle B-pillar by adding the B-pillar reinforcement plate 40, and the B-pillar reinforcement plate 40 and the B-pillar inner panel 30 are closed to form an energy absorption cavity 50. In addition, second connection portions 43 are provided above and below the B-pillar price plate to strengthen the connection strength between the B-pillar reinforcement plate 40 and the upper side beam reinforcement plate 10 and the sill beam 20, thereby improving the transmission and dispersion ability of the force between the upper side beam reinforcement plate 10, the B-pillar, and the sill beam 20, which is beneficial to improving the structural reliability of the side wall assembly 100 of the vehicle and improving the space safety of the occupant compartment.

[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0061] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A side wall component, characterized in that, including the following steps: upper side beam reinforcement plate (10); threshold beam (20), the threshold beam (20) is arranged at intervals below the upper side beam reinforcement plate (10), B-pillar inner panel (30), the B-pillar inner panel (30) is connected between the upper side beam reinforcement plate (10) and the threshold beam (20); B-pillar reinforcement plate (40), the B-pillar reinforcement plate (40) is connected between the upper side beam reinforcement plate (10) and the threshold beam (20), the B-pillar reinforcement plate (40) includes a first main board part (41) and a first flanging part (42), the first main board part (41) extends in the up-down direction and is arranged at intervals outside the B-pillar inner panel (30) in the left-right direction, the first flanging part (42) is arranged on the front and rear sides of the first main board part (41), the first flanging part (42) bends and extends towards the inside in the left-right direction relative to the first main board part (41) and is connected to the B-pillar inner panel (30), and an energy absorption cavity (50) is jointly defined between the B-pillar reinforcement plate (40) and the B-pillar inner panel (30).

2. The side wall assembly according to claim 1, wherein The B-pillar inner panel (30) includes a second main board part (31) and a second flanging part (32), the second main board part (31) is arranged at intervals inside the first main board part (41) in the left-right direction, the second flanging part (32) is arranged on the front and rear sides of the second main board part (31) and bends and extends towards the outside in the left-right direction relative to the second main board part (31), and the second flanging part (32) is connected to the first flanging part (42).

3. The side wall assembly according to claim 1, wherein, First connecting parts (60) are arranged on both the upper side beam reinforcement plate (10) and the threshold beam (20), second connecting parts (43) are arranged at both the upper and lower ends of the B-pillar reinforcement plate (40), both the first connecting parts (60) and the second connecting parts (43) are in a Z-shaped step shape, the second connecting parts (43) are located outside the upper side beam reinforcement plate (10) and the threshold beam (20) in the left-right direction and are fixedly connected to the first connecting parts (60).

4. The side wall assembly according to claim 3, wherein At least part of the upper and lower ends of the first main board part (41) and the first flanging part (42) jointly form the second connecting part (43).

5. The side panel assembly according to claim 3, wherein, Support parts (411) are arranged at both the upper and lower ends of the first main board part (41), the support parts (411) at both the upper and lower ends of the first main board part (41) are respectively in mutual fitting connection and fixation with at least part of the upper side beam reinforcement plate (10) and the threshold beam (20) in the left-right direction, and the second connecting part (43) is located at at least one end in the front-rear direction of the support part (411).

6. The side wall assembly according to claim 5, wherein The second connecting part (43) is located at both ends in the front-rear direction of the support part (411).

7. The side wall assembly according to claim 5, characterized in that, The B-pillar reinforcement plate (40) includes a main body section (44) and connecting sections (45). The connecting sections (45) are arranged at the upper and lower ends of the main body section (44). The connecting sections (45) protrude and extend towards the two sides in the front and rear directions relative to the main body section (44). Both the second connecting portion (43) and the supporting portion (411) are arranged on the connecting sections (45).

8. The side wall assembly according to claim 7, characterized in that Arc-shaped transition sections (441) are arranged between the two sides of the main body section (44) in the front and rear directions and the connecting sections (45).

9. The side wall assembly according to claim 1, wherein, A plurality of electrophoretic shielding prevention holes are arranged at intervals on the B-pillar reinforcement plate (40).

10. A vehicle, characterized in that, Comprising: The side panel assembly (100) according to any one of claims 1-9.

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