A rocker support structure and rocker assembly

Abstract

The application discloses a threshold support structure and a threshold assembly, which comprise a long beam and a support assembly. The support assembly comprises at least one first support and at least one second support. The first support is fixed to one side of the long beam and comprises an inner plate connecting portion used for connecting with a threshold inner plate. The second support is fixed to the other side of the long beam and comprises at least one outer plate connecting portion used for connecting with a threshold outer plate. The first support and the second support are arranged correspondingly in the length direction of the long beam. The second support, the long beam and the first support form a stable force transmission structure in the limited space between the threshold outer plate and the threshold inner plate, so that the effectiveness of load transmission in a side collision condition is improved, the strength of the threshold assembly is improved, the deformation degree of a vehicle body subjected to a side collision is greatly reduced, and the safety of a battery pack and passengers is improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a door sill support structure and door sill assembly. Background Technology

[0002] With the rapid development of the new energy vehicle market, domestic and foreign automakers have invested a great deal of human and material resources in the research and development of new energy vehicles, including hybrid vehicles. Consequently, vehicle collision safety performance has received widespread attention. Vehicle collisions are generally classified into frontal / side / rear collisions, as well as rollover and pedestrian collisions. In side collisions, especially side pole impacts, new energy vehicles have less crush space, fewer or even missing force transmission paths, making it difficult to effectively transmit force in side collisions. The battery pack and internal modules are prone to compression, leakage, thermal runaway, etc., leading to battery pack damage and safety accidents. In contrast, the internal structure of existing gasoline vehicles is complex and not effective enough to solve the side collision problem of hybrid vehicles. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides a sill support structure and sill assembly that can form a stable force transmission structure within the limited space of the sill, greatly improving the effectiveness of load transfer in side collision conditions, increasing the strength of the sill assembly, and enhancing the safety of the battery pack and occupants.

[0004] The present invention provides a threshold support structure, comprising a long beam and a support assembly. The support assembly includes at least one first support and at least one second support. The first support is fixed to one side of the long beam and includes an inner plate connecting portion for connecting with the inner plate of the threshold. The second support is fixed to the other side of the long beam and includes at least one outer plate connecting portion for connecting with the outer plate of the threshold. The first support and the second support are correspondingly arranged along the length direction of the long beam.

[0005] Furthermore, the first support includes a first connecting portion, which is connected to the long beam.

[0006] Furthermore, the first bracket also includes a first force transmission part, and the first connecting part is connected to the inner plate connecting part through the first force transmission part.

[0007] Preferably, the first force transmission part extends from the first connecting part to the inner plate connecting part.

[0008] Preferably, the first bracket further includes a support portion, one side of which is connected to one end of the inner plate connecting portion, and the other side of which extends toward the second bracket.

[0009] Furthermore, the second support includes a second connecting portion, which is connected to the long beam.

[0010] Furthermore, the second bracket also includes at least one second force transmission part, which is connected to the second connecting part and is also connected to the outer plate connecting part.

[0011] Furthermore, the included angle between the second force transmission part and the second connecting part is 90° to 135°.

[0012] Furthermore, the cross-section of the long beam is a type B structure.

[0013] The present invention also provides a door sill assembly, including an outer door sill plate, an inner door sill plate, and a door sill support structure as described in any one of the above, wherein the door sill support structure is located between the outer door sill plate and the inner door sill plate, a first bracket is connected to the inner door sill plate, and a second bracket is connected to the outer door sill plate.

[0014] Implementing this invention has the following beneficial effects:

[0015] 1. The present invention forms a stable force transmission structure in the limited space between the outer sill plate and the inner sill plate by means of the second bracket, the long beam and the first bracket, thereby improving the effectiveness of load transmission in side collision conditions and also improving the strength of the sill assembly. This can greatly reduce the deformation of the vehicle body under side collision and improve the safety of the battery pack and occupants.

[0016] 2. The first connecting part of the first bracket is fitted to the long beam, and the inner plate connecting part is fitted to the inner plate of the sill, which increases the contact area and can further improve the effectiveness of load transfer. At the same time, it is also conducive to dispersing the force, avoiding load concentration, further improving bending performance, and improving the safety of the car under side collision conditions.

[0017] 3. The long beam adopts a B-type structure, which has strong bending energy and is not easy to break. It can further improve the strength of the sill support structure and reduce the risk of damage to the battery pack and occupant safety in side collision conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the embodiments will be briefly described below, wherein the same components are represented by the same reference numerals. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0019] Figure 1 A schematic diagram of a threshold support structure provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the assembly structure of the long beam and the first support in this invention;

[0021] Figure 3 for Figure 2 Front view of the assembly structure of the medium-length beam and the first support;

[0022] Figure 4 for Figure 2 Left view of the assembly structure of the middle long beam and the first support;

[0023] Figure 5 for Figure 2 Top view of the assembly structure of the middle long beam and the first support;

[0024] Figure 6 A schematic diagram of the connection between a long beam and the inner sill plate provided by the present invention;

[0025] Figure 7 This is a schematic diagram showing the connection between the second bracket and the outer sill plate provided by the present invention;

[0026] Figure 8 This is a schematic diagram of the floor deformation of a car with this sill support structure during a side impact test.

[0027] Figure 9 This is a schematic diagram showing the deformation of the battery pack in a side-impact test of a car with this sill support structure.

[0028] In the figure, the corresponding reference numerals are: 1-long beam, 2-first support, 21-first connecting part, 22-inner plate connecting part, 23-first force transmission part, 24-support part, 3-second support, 31-second connecting part, 32-second force transmission part, 33-outer plate connecting part, 34-energy absorption hole, 4-inner sill plate, 5-outer sill plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Example

[0031] This embodiment provides a door sill assembly, such as Figures 1-9As shown, the sill assembly includes an outer sill plate 5, an inner sill plate 4, and a sill support structure located between the outer sill plate 5 and the inner sill plate 4, which enhances the support strength in the direction from the outer sill plate 5 to the inner sill plate 4; Figure 1 As shown, the sill support structure includes a long beam 1 and a bracket assembly. The bracket assembly includes at least one first bracket 2 and at least one second bracket 3. The first bracket 2 is fixed to one side of the long beam 1 and is connected to the inner sill plate 4. The second bracket 3 is fixed to the other side of the long beam 1 and is connected to the outer sill plate 5, so that a stable force transmission structure is formed between the outer sill plate 5 and the inner sill plate 4. In a side impact, the load on the outer sill plate 5 is transferred to the second bracket 3, then through the long beam 1 to the first bracket 2, and finally to the inner sill plate 4 connected to the first bracket 2. This effectively improves the effectiveness of load transfer in a side impact. At the same time, the long beam 1 and the bracket assembly themselves have a certain strength, which can reduce the deformation of the long beam 1 and the sill assembly when subjected to a side impact, thereby reducing the risk of damage to the battery pack inside the car and the occupants in the passenger compartment, and greatly improving safety.

[0032] Specifically, such as Figure 2 As shown, the long beam 1 extends along the longitudinal direction of the vehicle or the direction of its forward movement, that is, the length direction of the long beam 1 is parallel to the longitudinal direction of the vehicle, such as... Figure 2 and Figure 3 The length of the long beam 1 can be arranged according to the length of the cavity between the inner sill plate 4 and the outer sill plate 5. In one optional embodiment, the length of the long beam 1 is equal to the length of the cavity in the longitudinal direction to improve the support strength. In another optional embodiment, the length of the long beam 1 can also be arranged according to the position of the high-voltage battery pack in the car. The length of the long beam 1 is greater than or equal to the length of the battery pack in the longitudinal direction, thereby saving the material and cost of the long beam 1 and specifically protecting the battery pack.

[0033] In this embodiment, the long beam 1 can be selected as a roll-formed beam, which has a simple structure, is easy to install, and has low cost. The long beam 1 is made of high-strength steel and is formed by roll forming, which can greatly improve the structural strength and bending strength of the long beam 1. This allows the long beam 1 to provide sufficient support strength in the direction perpendicular to its length, reducing bending deformation under side impact conditions. This improves the lateral impact resistance of the car door sill, effectively protecting the safety of the occupants in the car, and also helps protect the safety of the battery pack in the car floor. It prevents the door sill from deforming severely under side impact conditions, squeezing the battery pack, and causing damage to the battery pack, which could lead to a safety accident.

[0034] Specifically, such as Figure 4The direction indicated by the middle arrow is the lateral direction, which is perpendicular to the direction of the car's movement. In this lateral direction, the cross-section of the long beam 1 is a B-shaped structure, which further enhances the bending strength of the long beam 1 and improves the safety performance of the door sill support structure. In addition, the long beam 1 is a hollow structure in the length direction. On the one hand, it improves the weight reduction and helps to reduce the damage to the surrounding structure caused by the bending of the long beam 1 in a collision. On the other hand, while meeting the bending performance requirements, the hollow structure can reserve compression space to prevent the long beam 1 from directly intruding into the passenger compartment when it bends in a collision, which also helps to protect the safety of the occupants in the passenger compartment.

[0035] Specifically, in one optional embodiment, the long beam 1 is an aluminum extruded beam structure, which is more lightweight. While ensuring sufficient bending strength, it further reduces the risk of damage to the vehicle body under side impact conditions and is also more conducive to improving the safety of occupants. In another optional embodiment, the long beam 1 includes a roll-formed beam and an aluminum extruded beam. The roll-formed beam and the aluminum extruded beam are arranged in parallel, and one side of the roll-formed beam is attached to one side of the aluminum extruded beam. The two are fixedly connected, which further improves the support strength and bending performance of the long beam 1.

[0036] Specifically, in one optional embodiment, both the first bracket 2 and the second bracket 3 are formed by cold stamping, which is fast and has high forming accuracy, thus improving the force transmission effectiveness of the sill support structure.

[0037] Specifically, in one optional embodiment, the bracket assembly includes multiple first brackets 2 and multiple second brackets 3. The first brackets 2 are located on the inner side of the long beam 1, so that the long beam 1 is fixedly connected to the inner sill plate 4 through the multiple first brackets 2. The second brackets 3 are located on the outer side of the long beam 1, so that the long beam 1 is fixedly connected to the outer sill plate 5 through the multiple second brackets 3. The multiple first brackets 2 and multiple second brackets 3 form a multi-point connection structure. This multi-point connection structure can effectively distribute the force in the force transmission path, avoiding the concentrated load that causes the long beam 1 to bend greatly or even break directly. This greatly improves the bending resistance of the long beam 1, effectively reduces the bending degree of the long beam 1 and the inner sill plate 4 during a side collision, which is beneficial to protecting the safety of passengers in the car compartment. It is also beneficial to avoid the battery pack being deformed by the collision and causing leakage or thermal runaway, thus greatly improving safety performance.

[0038] Optionally, the first support 2 and the long beam 1, the first support 2 and the inner sill plate 4, the second support 3 and the long beam 1, and the second support 3 and the outer sill plate 5 can all be fixedly connected by welding. The connection structure is reliable and not easy to separate, which further improves the reliability of the force transmission structure and the effectiveness of load transmission.

[0039] In one optional embodiment, the first bracket 2 and the second bracket 3 are correspondingly arranged in the length direction of the long beam 1, which can effectively improve the cavity strength of the sill cavity. Especially in the case of a side collision, it can effectively prevent the vehicle body pillar 6 (e.g., B-pillar) from intruding too much due to the sill flipping inward, and avoid insufficient survival space from endangering the safety of the occupants. Preferably, the first bracket 2 and the second bracket 3 are correspondingly arranged in the length direction of the long beam 1, so that the first bracket 2 and the second bracket 3 form a back-to-back structure. The load of the first bracket 2 can be directly transferred to the corresponding second bracket 3 through the long beam 1. The force transmission path is direct and short, and the load transmission efficiency is higher.

[0040] The placement and number of bracket components can be adjusted according to the structural and strength requirements of the door sill to meet the force transmission requirements of various collision conditions such as side pillar impact, side impact, and frontal small offset, ensuring the stability of vehicle body deformation. In a specific embodiment, the number of first brackets 2 is 3 to 5, and the first brackets 2 are arranged along the length direction of the long beam 1 on one side of the long beam 1. Correspondingly, the number of second brackets 3 is 3 to 5, and the second brackets 3 are arranged along the length direction of the long beam 1 on the other side of the long beam 1 to meet the different requirements of different vehicle models for support strength and bending resistance. In addition, the fewer the number of bracket components, the simpler the structure, and the lower the cost, the lighter the door sill support structure can be, which is beneficial to improving lightweighting.

[0041] Specifically, such as Figure 2 As shown, the first support 2 includes a first connecting portion 21, which is connected to the long beam 1. The first connecting portion 21 is in close contact with the side of the long beam 1. In a preferred embodiment, the first connecting portion 21 includes a first connecting surface, which is parallel to the length direction of the long beam 1. The long beam 1 includes an outer side and an inner side that are parallel to each other. Both the inner and outer sides extend along the length direction, and the normal directions of the inner and outer sides are parallel to the lateral direction. The inner side is opposite to the inner sill plate 4. Figure 4 and Figure 5 As shown, the first connecting surface is fixedly connected to the inner side of the long beam 1, and the first connecting surface is in contact with the inner side. The surface structure of the first connecting surface can increase the contact area between the first bracket 2 and the inner side, thereby improving the fixing reliability. It is beneficial for the load to be transferred from the inner side to the first connecting surface, realizing the transfer of load from the long beam 1 to the first bracket 21. The load transfer in the lateral direction is highly effective, greatly improving the safety under side collision conditions.

[0042] Specifically, such as Figure 2 and Figure 6As shown, the first bracket 2 includes at least one inner plate connecting part 22, which is connected to the first connecting part 21. The inner plate connecting part 22 is used to fit and connect with the inner sill plate 4. In an optional embodiment, the inner plate connecting part 22 includes an inner plate connecting surface, which is parallel to the length direction of the long beam 1, that is, the inner plate connecting surface is parallel to the first connecting surface, so that the inner plate connecting surface and the inner sill plate 4 can be matched and fitted at a high degree, increasing the connection area and improving the reliability of the connection.

[0043] In a preferred embodiment, such as Figure 2 As shown, the first bracket 2 includes two inner plate connecting parts 22, which are located on both sides of the first connecting part 21 along the length of the long beam. This allows the load at the first connecting part 21 to be distributed to the two inner plate connecting parts 22, thereby further dispersing the force on the inner sill plate 4 and preventing the load from being concentrated at a certain point on the inner sill plate 4, which could cause the inner sill plate 4 to overturn inward and injure the occupants, thus further improving safety.

[0044] It should be noted that the first connecting surface and the inner plate connecting surface are located on different planes. In the lateral direction, the distance between the first connecting surface and the outer sill plate 5 is less than the distance between the inner plate connecting surface and the outer sill plate 5, or the distance between the first connecting surface and the inner sill plate 4 is greater than the distance between the inner plate connecting surface and the inner sill plate 4. The first connecting surface is fitted and connected to the inner side of the long beam 1, that is, the surface distance between the first connecting surface and the inner side of the long beam 1 is zero, while the surface distance between the inner plate connecting surface and the inner side of the long beam 1 is greater than zero. The first connecting surface and the inner plate connecting surface are located in different planes in the lateral direction so that the load can be transmitted in the lateral direction and effectively transmitted from the first connecting part 21 to the inner plate connecting part 22.

[0045] Specifically, such as Figure 2 As shown, the first support 2 also includes at least one first force transmission part 23. The first connecting part 21 is connected to the inner plate connecting part 22 through the first force transmission part 23, and the first force transmission part 23 and the inner plate connecting part 22 are connected in a one-to-one correspondence. In an optional embodiment, the first support 2 is provided with two inner plate connecting parts 22. Then, the first connecting part 21 is provided with a first force transmission part 23 on both sides of the length direction of the long beam 1, so that the two inner plate connecting parts 22 are connected to the first connecting part 21 through their respective first force transmission parts 23, ensuring that the load can be stably transmitted from the first connecting part 21 to the inner plate connecting part 22 through the first force transmission part 23, and the load transmission effectiveness is good.

[0046] Specifically, the first force transmission part 23 extends from the first connecting part 21 to the inner plate connecting part 22, so that the first bracket 2 forms a structure in the lateral direction that bends from the long beam 1 toward the inner sill plate 4, and one side of the first connecting part 21 bends toward the inner sill plate 4 to form the first force transmission part 23; optionally, the extension direction of the first force transmission part 23 is not parallel to the length direction of the long beam 1, that is, there is an angle between the extension direction of the first force transmission part 23 and the length direction of the long beam 1; in a specific embodiment, the extension direction of the first force transmission part 23 is perpendicular to the length direction of the long beam 1. The first force transmission part 23 extends obliquely from the long beam 1 toward the inner panel 4, and also extends away from the first connection part 21 along the length of the long beam 1. That is, the angle between the extension direction of the first force transmission part 23 and the first connection part 21 (or the first connection surface) is an obtuse angle, so that the load of the first connection part 21 is obliquely distributed, further improving the bending resistance of the sill support structure.

[0047] Specifically, such as Figure 4 As shown, the first bracket 2 also includes a support portion 24. One side of the support portion 24 is connected to one end of the inner panel connecting portion 22, and the other side of the support portion 24 extends towards the second bracket 3. That is, the upper end of the support portion 24 is connected to the lower end of the inner panel connecting portion 22, and extends outward from the lower end of the inner panel connecting portion 22 in the lateral direction, so that the support portion 24 can match and fit with the inner sill plate 4, and is used to fix and connect with the bottom of the inner sill plate 4, increasing the contact area between the first bracket 2 and the inner sill plate 4, making the connection firm. The larger contact area between the first bracket 2 and the inner sill plate 4 facilitates the transmission and distribution of force, reduces the deformation of the inner sill plate 4, and improves safety. The shape of the first bracket 2 matches the inner sill plate 4, especially the inner panel connecting portion 22 and the support portion 24, which greatly improves the matching degree between the sill support structure and the inner sill plate 4, which is conducive to the bonding and welding of the first bracket 2 and the inner sill plate 4, making it firmly fixed and improving the effectiveness of load transmission.

[0048] Specifically, such as Figure 7 As shown, the second support 3 includes a second connecting part 31, at least one second force transmission part 32, and at least one outer plate connecting part 33. The second force transmission part 32 is connected to the second connecting part 31 and is also connected to the outer plate connecting part 33. That is, the outer plate connecting part 33 is connected to the second connecting part 31 through the second force transmission part 32. The second connecting part 31 is connected to the long beam 1, and the outer plate connecting part 33 is used to connect to the sill outer plate 5, so that the long beam 1 and the sill outer plate 5 are fixedly connected through the second support 3, and the fixed connection is secure, so that the load can be stably transmitted from the sill outer plate 5 to the long beam 1 through the second support 3.

[0049] Specifically, in one optional embodiment, the second connecting part 31 includes a second connecting surface, which is a surface structure. The second connecting surface matches the outer surface of the long beam 1, so that the second connecting surface and the outer surface can fit together and connect, with a large contact area and high fixing reliability. In addition, the large contact area between the second connecting surface and the outer surface is also conducive to dispersing the load and avoiding excessive concentration of the load on a certain point of the long beam 1 during the load transmission process. This helps to reduce the stress on the long beam 1, reduce the bending degree of the long beam 1, and improve safety.

[0050] Specifically, such as Figure 7 As shown, the second force transmission part 32 can also be a surface structure. The extension direction of the second force transmission part 32 is not parallel to the length direction of the long beam 1. That is, the second force transmission part 32 extends from the second connecting part 31 in the lateral direction or extends obliquely, so that the second force transmission part 32 forms a force transmission path in the lateral direction, which facilitates the lateral transmission of load from the outer sill plate 5 to the inner sill plate 4.

[0051] Optionally, the included angle between the second force transmission part 32 and the second connecting part 31 is 90 to 135°; alternatively, the included angle between the second force transmission part 32 and the second connecting part 31 is 90 to 120°; in a specific embodiment, the included angle between the second force transmission part 32 and the second connecting part 31 is 90°, that is, the second force transmission part 32 extends in the lateral direction, and the plane in which the second force transmission part 32 is located is perpendicular to the length direction of the long beam 1, resulting in a short force transmission path and efficient and stable load transmission.

[0052] Specifically, in one optional embodiment, the second force transmission part 32 is also used to connect with the outer sill plate 5; that is, in one optional embodiment, the second bracket 3 is entirely connected to the outer sill plate 5 through the outer plate connecting part 33; in another optional embodiment, part of the second bracket 3 is connected to the outer sill plate 5 through the outer plate connecting part 33, while another part is connected to the outer sill plate 5 through the edge of the second force transmission part 32. The second force transmission part 32 includes a first edge and a second edge. The first edge is connected to the second connecting part 31, and the vertical distance between the second edge and the long beam 1 in the lateral direction is greater than the vertical distance between the first edge and the long beam 1 in the lateral direction. This second edge is used to connect with the outer sill plate 5 so that the load of the outer sill plate 5 can be stably transmitted to the second bracket 3, thereby improving the load transmission effectiveness.

[0053] Specifically, in a preferred embodiment, the second support 3 includes at least two second force transmission parts 32, so that the load can be transmitted to the second connecting part 31 through multiple second force transmission parts 32, uniformly distributing the load, which is beneficial to improving the side impact resistance performance of the second support 3; optionally, the multiple second force transmission parts 32 are respectively located on both sides of the second connecting part 31 in the length direction of the long beam 1; further optionally, the multiple second force transmission parts 32 are respectively located at both ends of the second connecting part 31 in the vertical direction; further optionally, the multiple second force transmission parts 32 are respectively located on both sides of the second connecting part 31 in the length direction of the long beam 1 and at both ends of the second connecting part 31 in the vertical direction, further increasing the force transmission path from the sill outer plate 5 to the second support 3, improving the load transmission effectiveness and the side impact resistance performance of the sill support structure.

[0054] Specifically, such as Figure 7 As shown, the second support 3 includes multiple outer plate connecting parts 33, which are disposed at the edge of the second force transmission part 32. The outer plate connecting parts 33 are arranged parallel to the length direction of the long beam 1. The normal direction of the plane containing at least one outer plate connecting part 33 is parallel to the lateral direction, and the normal direction of the plane containing at least one outer plate connecting part 33 is parallel to the vertical direction. This makes the shape and height of the multiple outer plate connecting parts 33 match the outer sill plate 5, greatly improving the fixing reliability of the outer plate connecting parts 33 and the outer sill plate 5, and also improving the effectiveness of load transmission. Multiple transmission paths are formed between the outer sill plate 5 and the second support 3 through the multiple outer plate connecting parts 33, which helps to distribute the force and improve safety performance.

[0055] Specifically, such as Figure 7 As shown, the second connecting part 31 has an energy-absorbing hole 34, which can reserve deformation space for side collision conditions, reduce the deformation and compression of the second support 3, and avoid excessive compression of the long beam 1, the first support 2 and the inner sill plate 4 due to the small deformation space. That is, while ensuring the effectiveness of load transfer of the second support 3, it can also reduce the overall bending degree of the sill support structure, greatly improving the safety under side collision conditions.

[0056] Specifically, in one optional embodiment, the first support 2 is an integral structure; in another optional embodiment, the second support 3 is an integral structure, which is convenient and quick to process, has high forming accuracy, and good stability of the force transmission structure.

[0057] In this embodiment, a side-impact test was conducted on the sill support structure to verify its side-impact protection performance. The test results are as follows: Figure 8 and Figure 9As shown, when the sill assembly equipped with this sill support structure is subjected to a side impact, the deformation of the body pillar 6 area is small, and the intrusion into the passenger compartment is minimal, effectively protecting the safety of the occupants. Furthermore, the side impact also barely touches the battery pack, effectively reducing the risk of safety accidents caused by damage such as battery pack compression, leakage, and thermal runaway.

[0058] As can be seen from this embodiment, the present invention has the following beneficial effects:

[0059] 1. The present invention forms a stable force transmission structure in the limited space between the outer sill plate and the inner sill plate by means of the second bracket, the long beam and the first bracket, thereby improving the effectiveness of load transmission in side collision conditions and also improving the strength of the sill assembly. This can greatly reduce the deformation of the vehicle body under side collision and improve the safety of the battery pack and occupants.

[0060] 2. The first connecting part of the first bracket is fitted to the long beam, and the inner plate connecting part is fitted to the inner plate of the sill, which increases the contact area and can further improve the effectiveness of load transfer. At the same time, it is also conducive to dispersing the force, avoiding load concentration, further improving bending performance, and improving the safety of the car under side collision conditions.

[0061] 3. The long beam adopts a B-type structure, which has strong bending energy and is not easy to break. It can further improve the strength of the sill support structure and reduce the risk of damage to the battery pack and occupant safety in side collision conditions.

[0062] The above description is merely some embodiments of the present invention and is not intended to limit the present invention. Those skilled in the art should understand that the present invention can have various changes and improvements, and any modifications, equivalent substitutions and improvements made in accordance with the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A rocker support structure characterized by, The system includes a long beam (1) and a support assembly. The support assembly includes at least one first support (2) and at least one second support (3). The first support (2) is fixed to one side of the long beam (1) and includes an inner plate connecting part (22) for connecting with the inner sill plate (4). The second support (3) is fixed to the other side of the long beam (1) and includes at least one outer plate connecting part (33) for connecting with the outer sill plate (5). The first support (2) and the second support (3) are correspondingly arranged in the length direction of the long beam (1). The first support (2) includes a first connecting part (21), which is connected to the long beam (1); the first support (2) also includes a first force transmission part (23), which is connected to the inner plate connecting part (22) through the first force transmission part (23); The first force transmission part (23) extends obliquely from the long beam (1) toward the inner sill plate (4), and in the length direction of the long beam (1), the first force transmission part (23) also extends away from the first connecting part (21).

2. The rocker support structure of claim 1, wherein, The first force transmission part (23) extends from the first connecting part (21) to the inner plate connecting part (22).

3. The rocker support structure of claim 1, wherein, The first bracket (2) further includes a support part (24), one side of which is connected to one end of the inner plate connecting part (22), and the other side of which extends toward the second bracket (3).

4. The threshold support structure according to claim 1, characterized in that, The second support (3) includes a second connecting part (31), which is connected to the long beam (1).

5. The threshold support structure according to claim 4, characterized in that, The second bracket (3) further includes at least one second force transmission part (32), which is connected to the second connecting part (31) and is also connected to the outer plate connecting part (33).

6. The threshold support structure according to claim 5, characterized in that, The included angle between the second force transmission part (32) and the second connecting part (31) is 90~135°.

7. The threshold support structure according to claim 1, characterized in that, The cross-section of the long beam (1) is a type B structure.

8. A door sill assembly, characterized in that, It includes an outer sill plate (5), an inner sill plate (4), and a sill support structure as described in any one of claims 1-7, wherein the sill support structure is located between the outer sill plate (5) and the inner sill plate (4), the first bracket (2) is connected to the inner sill plate (4), and the second bracket (3) is connected to the outer sill plate (5).

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