Threshold structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, aims to solve the technical problem that some known threshold structures cannot give consideration to lightweight design and improvement of bending resistance, and provides a threshold structure and a vehicle. The doorsill structure comprises a frame body, a stress wall, a first connecting wall and a second connecting wall. The frame defines an energy absorbing chamber. The stress wall is arranged on one side, in the first direction, of the frame body. The stress wall is provided with a first side and a second side, and the first side and the second side are oppositely arranged in the second direction. The stress wall is used for bearing collision force. The first connecting wall and the second connecting wall are arranged in a spaced mode in the second direction, the first connecting wall is connected between the first side and the frame body, the second connecting wall is connected between the second side and the frame body, and the end, close to the frame body, of the first connecting wall inclines in the direction away from the second connecting wall; the end, close to the frame, of the second connecting wall inclines in the direction away from the first connecting wall. The beneficial effects of the utility model are that the lightweight design is considered and the bending resistance is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a door sill structure and a vehicle. Background Art

[0002] With the development of vehicles, the size of vehicles has become larger and larger, and the quality of the whole vehicle has also increased. When the side of the vehicle encounters a side collision, the impact force caused by the side column collision on the vehicle's threshold structure will also increase accordingly. The existing threshold structure usually increases its size to improve the crushing energy absorption function, which will lead to an increase in the weight of the threshold structure and an increase in cost. Utility Model Content

[0003] The present application provides a door sill structure and a vehicle to solve the technical problem that some known door sill structures cannot achieve both lightweight design and improved bending resistance.

[0004] The embodiment of the present application is implemented as follows:

[0005] In a first aspect, the present application provides a threshold structure, comprising: a frame body, which defines an energy-absorbing chamber; a force-bearing wall, which is arranged on one side of the frame body along a first direction, and has a first side and a second side spaced apart along a second direction, and the force-bearing wall is used to withstand collision force; a first connecting wall and a second connecting wall, the first connecting wall and the second connecting wall are arranged opposite to each other along the second direction, the first connecting wall is connected between the first side and the frame body, and the second connecting wall is connected between the second side and the frame body, an end of the first connecting wall close to the frame body is inclined in a direction away from the second connecting wall, and an end of the second connecting wall close to the frame body is inclined in a direction away from the first connecting wall.

[0006] The threshold structure of the present application is installed after the vehicle body. When the vehicle body collides with the side pillar, the side pillar applies a collision force in the first direction to the load-bearing wall of the threshold structure, and the collision force is transmitted to the frame via the first connecting wall and the second connecting wall. The shape design of the first connecting wall and the second connecting wall makes it so that after the threshold structure is subjected to the collision force, when the first connecting wall and the second connecting wall are crushed and deformed, the first connecting wall has a tendency to crush in a direction parallel to the second direction, and the second connecting wall has a tendency to crush in a direction parallel to the second direction, and the extension direction of the first connecting wall is opposite to the extension direction of the second connecting wall, so that the first connecting wall and the second connecting wall can offset part of the component of the collision force in the second direction, thereby improving the crushing energy absorption effect of the threshold structure and reducing the collision force transmitted to the frame. At the same time, the energy absorption chamber of the frame produces a certain deformation and shares and absorbs the collision force, having a good anti-bending support effect, thereby reducing the overall bending deformation of the threshold structure. Therefore, the threshold structure of the present application can improve the crushing energy absorption effect of the threshold structure through the structural design of the load-bearing wall, the first connecting wall and the second connecting wall. In this way, the threshold structure of the present application can adopt a frame with a smaller width, combined with a load-bearing wall to ensure the bending resistance of the threshold structure, thereby taking into account both lightweight design and improved bending resistance.

[0007] In one possible implementation:

[0008] The first connecting wall includes a first wall segment and a second wall segment that are bent and connected, the first wall segment is connected to the load-bearing wall, the second wall segment is connected to the frame, and the end of the second wall segment close to the frame is inclined away from the second connecting wall; the threshold structure also includes a branch reinforcement wall, one end of the branch reinforcement wall is connected to the connection between the first wall segment and the second wall segment, and the other end of the branch reinforcement wall is connected to the frame.

[0009] In one possible implementation:

[0010] The threshold structure also includes a plurality of front reinforcing walls, which are respectively connected between the load-bearing wall and the frame, and the plurality of front reinforcing walls are arranged at intervals along the second direction. The angle between the second connecting wall and the first direction is greater than or equal to the angle between any of the front reinforcing walls and the first direction.

[0011] In one possible implementation:

[0012] The threshold structure includes multiple front reinforcing walls and multiple rear reinforcing walls, the multiple front reinforcing walls are arranged at intervals along the second direction, the multiple front reinforcing walls are respectively connected between the load-bearing wall and the frame, the multiple rear reinforcing walls are arranged at intervals along the second direction in the energy absorption chamber, the multiple rear reinforcing walls are arranged in a one-to-one correspondence with the multiple front reinforcing walls along the first direction, and the relatively arranged front reinforcing walls and the rear reinforcing walls are connected to the same position of the frame.

[0013] In one possible implementation:

[0014] The frame includes a first side wall, a second side wall, a top wall and a bottom wall, the first side wall and the second side wall are spaced apart along a first direction, the top wall and the bottom wall are spaced apart along a second direction, the first side wall, the top wall, the second side wall and the bottom wall are sequentially connected to form the energy absorption chamber, and the first connecting wall and the second connecting wall are both connected to the first side wall.

[0015] In one possible implementation:

[0016] The top wall includes a third wall segment and a fourth wall segment that are bent and connected, the third wall segment is connected to the first side wall, and the fourth wall segment is connected to the second side wall. The connection between the third wall segment and the fourth wall segment is convex in the direction away from the bottom wall, and the plane where the bottom wall is located is perpendicular to the second direction.

[0017] In one possible implementation:

[0018] The threshold structure further includes a reinforcement coating, which is applied to the outer surface of the frame and / or the outer surface of the load-bearing wall and / or the outer surface of the first connecting wall and / or the outer surface of the second connecting wall.

[0019] In one possible implementation:

[0020] The wall thickness of the stress-bearing wall is H1, the thickness of the reinforcement coating is H2, the wall thickness of the frame is H3, and the wall thickness of the second connecting wall is H4, 0.6≤H2 / H1≤1.2 and / or 0.6≤H2 / H3≤1.2 and / or 0.6≤H2 / H4≤1.2.

[0021] In a second aspect, the present application provides a vehicle comprising a vehicle body and the aforementioned rocker structure, wherein the rocker structure is connected to the vehicle body.

[0022] In one possible implementation:

[0023] The vehicle also includes a crossbeam and a battery pack, the crossbeam is arranged on the upper side of the threshold structure along the second direction, the battery pack is arranged on the lower side of the threshold structure along the second direction, the top wall of the frame of the threshold structure includes a third wall segment and a fourth wall segment connected by a bending, and the connection between the third wall segment and the fourth wall segment protrudes outward in a direction away from the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 FIG. 1 is a schematic diagram of the three-dimensional structure of a door sill structure according to an embodiment of the present application.

[0026] Figure 2 for Figure 1 Side view of the rocker structure in Figure 1.

[0027] Figure 3 This is a cross-sectional view of a door sill structure according to another embodiment of the present application.

[0028] Figure 4 for Figure 3 Schematic diagram of a rocker structure being impacted by a collision column.

[0029] Figure 5 FIG. 1 is a structural diagram of a threshold structure according to another embodiment of the present application.

[0030] Figure 6 This is a schematic structural diagram of a vehicle according to an embodiment of the present application.

[0031] Figure 7 for Figure 6 Schematic diagram of the positional relationship between the vehicle's interior door sill structure, crossbeam, and battery pack.

[0032] Description of main component symbols:

[0033]

[0034] DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered therein. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered therein. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be an element centered therein. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" as used herein includes any and all combinations of one or more of the relevant listed items.

[0038] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0039] Example

[0040] join Figure 1 and Figure 2 , this embodiment discloses a threshold structure 100 for a vehicle. The threshold structure 100 includes a frame 10, a load-bearing wall 20, a first connecting wall 30, and a second connecting wall 40. The frame 10 defines an energy-absorbing chamber 11. The load-bearing wall 20 is provided on one side of the frame 10 along a first direction Y, and the first direction Y may be the width direction of the vehicle. The load-bearing wall 20 has a first side 21 and a second side 22, and the first side 21 and the second side 22 are spaced apart along a second direction Z, and the second direction Z intersects with the first direction Y, and the second direction Z may be the height direction of the vehicle. The load-bearing wall 20 is used to bear collision force, that is, when subjected to a collision, the impacting object first collides with the load-bearing wall 20. The first connecting wall 30 and the second connecting wall 40 are opposite to each other along the second direction Z. The first connecting wall 30 is connected between the first side 21 and the frame 10, and the second connecting wall 40 is connected between the second side 22 and the frame 10. The end of the first connecting wall 30 close to the frame 10 is inclined in a direction away from the second connecting wall 40, and the end of the second connecting wall 40 close to the frame 10 is inclined in a direction away from the first connecting wall 30.

[0041] The rocker structure 100 of this embodiment is installed on the vehicle body 201 (see Figure 6), when the vehicle body 201 collides with the side pillar, the side pillar applies an impact force along the first direction Y to the load-bearing wall 20 of the rocker structure 100. This impact force is transmitted to the frame 10 via the first connecting wall 30 and the second connecting wall 40. The shape of the first connecting wall 30 and the second connecting wall 40 causes the rocker structure 100 to undergo crushing deformation after being subjected to the impact force. The first connecting wall 30 tends to crush parallel to the second direction Z, while the second connecting wall 40 tends to crush parallel to the second direction Z. Furthermore, the first connecting wall 30 extends in the opposite direction to the second connecting wall 40. As a result, the first connecting wall 30 and the second connecting wall 40 can offset a portion of the impact force component in the second direction Z, thereby improving the rocker structure 100's crushing energy absorption effect and reducing the impact force transmitted to the frame 10. Simultaneously, the energy-absorbing chamber 11 of the frame 10 undergoes a certain amount of deformation to share and absorb the impact force, providing effective anti-bending support and reducing the overall bending deformation of the rocker structure 100. Therefore, the threshold structure 100 of this embodiment can enhance its crush energy absorption performance through the structural design of the load-bearing wall 20, the first connecting wall 30, and the second connecting wall 40. Thus, the threshold structure 100 of this embodiment can utilize a frame 10 having a relatively small width, which, in conjunction with the load-bearing wall 20, ensures the bending resistance of the threshold structure 100, thereby achieving both a lightweight design and improved bending resistance.

[0042] Optionally, the door sill structure 100 of this embodiment may be made of aluminum alloy material, which has good energy absorption effect and is light in weight, and can further achieve lightweight design.

[0043] In this embodiment, see Figure 1 The length direction of the frame 10 is parallel to the third direction X, which intersects the first direction Y and the second direction Z. The third direction X may be the length direction of the vehicle 200. The length direction of the load-bearing wall 20 is parallel to the third direction X.

[0044] In this embodiment, see Figure 2 The second side 22 is located below the first side 21 along the second direction Z. The threshold structure 100 further includes a plurality of front reinforcing walls 50, each of which is connected between the load-bearing wall 20 and the frame 10. The plurality of front reinforcing walls 50 are spaced apart along the second direction Z. The angle α formed between the second connecting wall 40 and the first direction Y is greater than or equal to the angle β formed between any of the front reinforcing walls 50 and the first direction Y.

[0045] The multiple front reinforcing walls 50 can divide the space between the load-bearing wall 20 and the frame 10 into multiple reinforced grids to increase the strength between the load-bearing wall 20 and the frame 10, improve the bending resistance, reduce the collision force transmitted to the frame 10, and thus reduce the bending degree of the frame 10.

[0046] At the same time, since the angle α between the second connecting wall 40 and the first direction Y is greater than or equal to the angle β between any front reinforcing wall 50 and the first direction Y, after the load-bearing wall 20 is subjected to the collision force, the second connecting wall 40 first produces a crushing deformation. Therefore, during the entire collision process, the second connecting wall 40 can guide the load-bearing wall 20 to produce a crushing deformation first, and then the reduced collision force is transmitted to the frame 10 through the front reinforcing wall 50 and the first connecting wall 30. In this way, it can protect the components of the vehicle 200 on the side of the frame 10 away from the load-bearing wall 20.

[0047] in, Figure 2 The dotted arrow in the figure is the schematic arrow for the transmission of collision force.

[0048] In this embodiment, see Figure 2 The first connecting wall 30 includes a first wall segment 31 and a second wall segment 32 that are connected by a bend. One end of the first wall segment 31 is connected to the second wall segment 32 by a bend, and the other end of the first wall segment 31 is connected to the load-bearing wall 20. The end of the second wall segment 32 away from the first wall segment 31 is connected to the frame 10. The end of the second wall segment 32 closer to the frame 10 is inclined away from the second connecting wall 40. The threshold structure 100 also includes a branch reinforcement wall 80. One end of the branch reinforcement wall 80 is connected to the junction of the first wall segment 31 and the second wall segment 32, and the other end of the branch reinforcement wall 80 is connected to the frame 10.

[0049] In this way, after a collision occurs, the collision force first generates a crushing deformation from the second connecting wall 40, and then is transmitted to the first wall section 31. In the process of the collision force being transmitted from the first wall section 31 to the second wall section 32 and the branch reinforcement wall 80, it will also be first transmitted to the second wall section 32, and then to the branch reinforcement wall 80. In this way, by guiding the collision force through the first connecting wall 30 and the branch reinforcement wall 80, multi-level crushing can be achieved in a narrow area along the first direction Y, thereby improving the crushing energy absorption effect of the threshold structure 100.

[0050] Optionally, the length direction of the branch reinforcement wall 80 is substantially parallel to the first direction Y.

[0051] In this embodiment, see Figure 2 The second wall section 32 includes a first bending wall 321 and a second bending wall 322. The first bending wall 321 is bent and connected to the second bending wall 322. The end of the first bending wall 321 away from the second bending wall 322 is connected to the first wall section 31, and the end of the second bending wall 322 away from the first bending wall 321 is connected to the frame 10. The first bending wall 321 is inclined along the first direction Y at one end close to the frame 10 in a direction away from the second connecting wall 40, and the second bending wall 322 is inclined along the first direction Y at one end close to the frame 10 in a direction away from the second connecting wall 40, and the angle γ between the first bending wall 321 and the second bending wall 322 is an obtuse angle.

[0052] In this way, the obtuse angle between the first bending wall 321 and the second bending wall 322 can induce the collision force to crush the bending portion of the second wall segment 32 , thereby improving the crushing energy absorption effect of the second wall segment 32 .

[0053] In this embodiment, see Figure 2 The threshold structure 100 includes a plurality of front reinforcing walls 50 and a plurality of rear reinforcing walls 60. The plurality of front reinforcing walls 50 are arranged at intervals along the second direction Z, and the plurality of front reinforcing walls 50 are connected between the load-bearing wall 20 and the frame 10. The plurality of rear reinforcing walls 60 are arranged at intervals along the second direction Z in the energy absorbing chamber 11. Each front reinforcing wall 50 is respectively arranged corresponding to one of the rear reinforcing walls 60 along the first direction Y, and the oppositely arranged front reinforcing walls 50 and rear reinforcing walls 60 are connected to the same position of the frame 10.

[0054] In this way, the front reinforcing wall 50 can better transmit the collision force to the rear reinforcing wall 60 , thereby improving the transmission and dispersion of the collision force and ensuring the buffering and energy absorption effect of the rocker structure 100 .

[0055] Optionally, the branch reinforcement wall 80 is provided corresponding to one of the rear reinforcement walls 60 , and the branch reinforcement wall 80 and the rear reinforcement wall 60 are connected to the same position of the frame 10 .

[0056] Optionally, the rear reinforcing wall 60 is connected to the frame 10 roughly along the first direction Y, that is, the rear reinforcing wall 60 is roughly parallel to the first direction Y. In this way, the rear reinforcing wall 60 can support the frame 10 to better withstand the collision force and reduce the convex angle of the frame 10 away from the load-bearing wall 20, so as to improve the bending resistance of the threshold structure 100 and improve the protection of vehicle parts.

[0057] In this embodiment, see Figure 2 The multiple front reinforcing walls 50 include a first reinforcing wall 50b and a second reinforcing wall 50c. The first reinforcing wall 50b and the second reinforcing wall 50c are arranged at intervals along the second direction Z. The spacing between the first reinforcing wall 50b and the second reinforcing wall 50c along the second direction Z gradually increases in the direction close to the frame body 10, and the end of the first reinforcing wall 50b close to the frame body 10 is inclined in the direction close to the top wall 14, and the end of the second reinforcing wall 50c close to the frame body 10 is inclined in the direction close to the bottom wall 15.

[0058] In this way, when the collision force is transmitted to the first reinforcing wall 50b and the second reinforcing wall 50c, the first reinforcing wall 50b and the second reinforcing wall 50c are crushed and deformed. The first reinforcing wall 50b has a tendency to crush in a direction parallel to the second direction Z, and the second reinforcing wall 50c has a tendency to crush in a direction parallel to the second direction Z. The extension direction of the first reinforcing wall 50b is opposite to the extension direction of the second reinforcing wall 50c, so that the first reinforcing wall 50b and the second reinforcing wall 50c can offset part of the component of the collision force in the second direction Z, further improving the crushing energy absorption effect of the threshold structure 100 and reducing the collision force transmitted to the frame 10.

[0059] In this embodiment, see Figure 2 The frame 10 includes a first side wall 12, a second side wall 13, a top wall 14 and a bottom wall 15. The first side wall 12 and the second side wall 13 are spaced apart along the first direction Y, and the top wall 14 and the bottom wall 15 are spaced apart along the second direction Z. The first side wall 12, the top wall 14, the second side wall 13 and the bottom wall 15 are sequentially connected to form an energy-absorbing chamber 11. The first connecting wall 30 and the second connecting wall 40 are both connected to the first side wall 12. A plurality of rear reinforcing walls 60 are respectively connected to the first side wall 12 and the second side wall 13 on both sides of the first direction Y. The branch reinforcing wall 80 is connected to the first connecting wall 30 on one side of the first direction Y, and the branch reinforcing wall 80 is connected to the first side wall 12 on the other side of the first direction Y. A plurality of front reinforcing walls 50 are respectively connected between the load-bearing wall 20 and the first side wall 12 on both sides of the first direction Y.

[0060] Optionally, the minimum distance between the first side wall 12 and the second side wall 13 along the first direction Y is 135 mm. In other embodiments, the distance between the first side wall 12 and the second side wall 13 can be adjusted according to actual needs.

[0061] In this embodiment, see Figure 2 The top wall 14 includes a third wall segment 141 and a fourth wall segment 142 connected by a bend. The end of the third wall segment 141 away from the fourth wall segment 142 is connected to the first side wall 12, and the end of the fourth wall segment 142 away from the third wall segment 141 is connected to the second side wall 13. The connection between the third wall segment 141 and the fourth wall segment 142 convexes in a direction away from the bottom wall 15. The convex direction of the connection intersects the first direction Y. For example, the convex direction of the connection can be parallel to the second direction Z. The plane on which the bottom wall 15 is located is perpendicular to the second direction Z.

[0062] In this way, when the load-bearing wall 20 is subjected to a collision force, the collision force is transmitted to the top wall 14 and the bottom wall 15 respectively. Since the bottom wall 15 is perpendicular to the second direction Z, the top wall 14 protrudes outward along the second direction Z. In this way, the top wall 14 bends and collapses first compared to the bottom wall 15. In this way, most of the collision force is first transmitted to the upper side of the second side wall 13 through the top wall 14, and a small part of the collision force is transmitted to the lower side of the second side wall 13 through the bottom wall 15, thereby protecting the components of the vehicle 200 on the lower side of the second side wall 13.

[0063] For example, see Figure 7 When the door sill structure 100 is installed in a vehicle 200, a crossbeam 202 is provided on one side of the frame 10 along the first direction Y. The crossbeam 202 is the crossbeam 202 of the vehicle seat. The lower side of the frame 10 along the second direction Z is provided with vehicle parts that need to be protected, such as a battery pack 203. In this way, the crossbeam 202 can bear most of the collision force, while the battery pack 203 bears less collision force, thereby improving the protection of the battery pack 203.

[0064] Alternatively, see Figure 2 The third wall segment 141 is connected to the second bending wall 312 , and the two extend in the same direction. In this way, the collision force can be reliably guided from the second bending wall 312 to the third wall segment 141 .

[0065] In this embodiment, see Figure 3 and Figure 4 The threshold structure 100 further includes a reinforcing coating 70, which is applied to the outer surface of the frame 10 and / or the outer surface of the load-bearing wall 20 and / or the outer surface of the first connecting wall 30 and / or the outer surface of the second connecting wall 40. The reinforcing coating 70 can strengthen the frame 10, the load-bearing wall 20, the first connecting wall 30, and the second connecting wall 40, thereby improving their bending resistance.

[0066] In other embodiments, the reinforcement coating 70 may also be coated on the inner surface of the frame 10 and / or the inner surface of the load-bearing wall 20 and / or the inner surface of the first connecting wall 30 and / or the inner surface of the second connecting wall 40 .

[0067] In this embodiment, the reinforcing coating 70 is made of an elastic protective material with high tensile strength, which can be greater than 20 MPa or greater than 24 MPa, and a large elongation at break, which can be greater than 250%, for example, up to 300%. Specifically, the reinforcing coating 70 can be made of polyurethane elastomer, epoxy resin, silicone, or isocyanate prepolymer. Part of the reinforcing coating 70 can also be made of glue A and glue B. Glue A can be made of an aliphatic isocyanate, a cyclic isocyanate, or a modified isocyanate polymer, and glue B can be made of a polyol. Glue A and glue B can be mixed at room temperature and applied to the surface of the stress-bearing area, thereby ensuring a reinforcing effect on the stress-bearing area.

[0068] The above materials can resist impact, see Figure 4 After the rocker structure 100 is hit by the collision column 300, the reinforcement coating 70 can quickly diffuse the collision force through its own elasticity to achieve a protective effect on the impact area. In this embodiment, the reinforcement coating 70 can guide the collision force along the third direction X to other areas of the rocker structure 100, thereby reducing the protrusion angle of the side of the frame 10 away from the load-bearing wall 20 along the first direction Y after bending and deformation, thereby preventing the frame 10 from damaging the vehicle 200 parts after bending and protruding, and improving the protection of the vehicle 200 parts.

[0069] Furthermore, the reinforcing coating 70, formed by mixing glue A and glue B, exhibits a high degree of crosslinking, high toughness, and high strength, further enhancing its protective properties. Furthermore, the reinforcing coating 70 formed by mixing glue A and glue B also exhibits excellent adhesion, significantly extending the duration of the reinforcing coating 70's retention on the surfaces of the frame 10, the load-bearing wall 20, the first connecting wall 30, and the second connecting wall 40. The specific materials and proportions of the reinforcing coating 70 can be determined based on existing relevant materials and will not be further described in this embodiment.

[0070] At the same time, compared with the existing thermal spray coating metal or ceramic coating, the strengthening coating 70 of this embodiment is also easy to process. Of course, in other embodiments of the present application, the strengthening coating 70 can also be set as a metal or ceramic coating.

[0071] In this embodiment, see Figure 3, the wall thickness of the load-bearing wall 20 is H1, the thickness of the reinforcing coating 70 is H2, the wall thickness of the frame 10 is H3, the wall thickness of the second connecting wall 40 is H4, 0.6≤H2 / H1≤1.2 and / or 0.6≤H2 / H3≤1.2 and / or 0.6≤H2 / H4≤1.2. Within this range, both economic cost and the reinforcing effect of the reinforcing coating 70 on the load-bearing wall 20 can be taken into account. If H2 / H1 is too high, the coating cost of the reinforcing coating 70 is too high, and the additional buffering effect brought about is not obvious, and the marginal effect is more obvious. If H2 / H1 is too low, the buffering and dispersion effect of the reinforcing coating 70 on the collision force is insufficient, making it difficult for the reinforcing coating 70 to improve the bending resistance of the threshold structure 100.

[0072] Optionally, H2 / H1 can be set to any one of 0.6, 0.7, 0.8, 0.9, 1, 1.1, or 1.2. H2 / H3 can be set to any one of 0.6, 0.7, 0.8, 0.9, 1, 1.1, or 1.2. H2 / H4 can be set to any one of 0.6, 0.7, 0.8, 0.9, 1, 1.1, or 1.2.

[0073] Optionally, 0.8≤H2 / H1≤1. For example, H2 / H1 can be set to 0.8, 0.85, 0.9, 0.95, or 1. Optionally, 0.8≤H2 / H3≤1. For example, H2 / H3 can be set to 0.8, 0.85, 0.9, 0.95, or 1. Optionally, 0.8≤H2 / H4≤1. For example, H2 / H4 can be set to 0.8, 0.85, 0.9, 0.95, or 1.

[0074] The specific values ​​of H1, H2, H3 and H4 can be adjusted according to different vehicle models and the design dimensions of the rocker structure 100, and are not specifically limited in this embodiment.

[0075] For example, in some embodiments, H1 = H3 = H4, and in other embodiments, H1, H3, and H4 may be slightly different.

[0076] See also Figure 5 , Figure 5 A frame 10a in another embodiment is shown. Compared with the aforementioned frame 10, the frame 10a further includes a partition wall 16. The partition wall 16 is arranged between the first side wall 12 and the second side wall 13. The partition wall 16 is connected to the top wall 14 and the bottom wall 15 on both sides along the first direction Y, respectively. The partition wall 16 is provided with a plurality of rear reinforcing walls 60 on both sides along the first direction Y, respectively. In this way, the energy absorption chamber 11 can be divided into more energy absorption grids, thereby further improving the bending resistance of the frame 10a and reducing the possibility of the frame 10a bending or damaging vehicle parts.

[0077] In other embodiments, more partition walls 16 may be provided in the frame 10a, and the shape of the second side wall 13 of the frame 10a may be adjusted appropriately. Therefore, the specific structure of the frame 10 of this embodiment may be adjusted and designed according to actual needs.

[0078] Optionally, the minimum distance between the first side wall 12 and the second side wall 13 of the frame 10a along the first direction Y is 180 mm. In other embodiments, the minimum distance between the first side wall 12 and the second side wall 13 of the frame 10a along the first direction Y can also be adjusted according to actual needs.

[0079] See also Figure 6 This embodiment further provides a vehicle 200 , including a vehicle body 201 and the aforementioned rocker structure 100 . The rocker structure 100 is connected to the vehicle body 201 .

[0080] The vehicle 200 includes the rocker structure 100 of the above embodiment, and thus has the beneficial effects of the rocker structure 100 of the above embodiment, which will not be described in detail herein.

[0081] In this embodiment, see Figure 7 Vehicle 200 also includes a crossbeam 202 and a battery pack 203. Crossbeam 202 is located on the side of the frame 10 of the rocker structure 100 that faces away from the load-bearing wall 20 along the first direction Y. Battery pack 203 is located on the lower side of the frame 10 along the second direction Z. The top wall 14 of the frame 10 of the rocker structure 100 includes a third wall segment 141 and a fourth wall segment 142 that are connected by a bend. The junction between the third and fourth wall segments 141 and 142 protrudes outward toward crossbeam 202, away from battery pack 203. This ensures that the rocker structure 100 effectively protects the battery pack 203 when subjected to collision forces. The specific principles of this are described above and will not be repeated here.

[0082] Optionally, in Figure 7 In the embodiment, a relief groove 204 is provided at the upper left corner of the battery pack 203, and the lower right corner of the frame 10 fits into the relief groove 204. In other embodiments, the specific installation position of the battery pack 203 can be adjusted according to actual needs.

[0083] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present application should not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A threshold structure, characterized in that: include: a frame defining an energy absorbing chamber; A force-bearing wall, the force-bearing wall is arranged at one side of the frame along the first direction, the force-bearing wall has a first side and a second side, the first side and the second side are arranged opposite to each other along the second direction, and the force-bearing wall is used to bear the collision force; A first connecting wall and a second connecting wall, wherein the first connecting wall and the second connecting wall are spaced apart along a second direction, the first connecting wall is connected between the first side and the frame, the second connecting wall is connected between the second side and the frame, an end of the first connecting wall close to the frame is inclined in a direction away from the second connecting wall, and an end of the second connecting wall close to the frame is inclined in a direction away from the first connecting wall.

2. The threshold structure according to claim 1, characterized in that: The first connecting wall comprises a first wall segment and a second wall segment connected by bending, the first wall segment is connected to the load-bearing wall, the second wall segment is connected to the frame, and one end of the second wall segment close to the frame is inclined in a direction away from the second connecting wall; The threshold structure further includes a branch reinforcement wall; one end of the branch reinforcement wall is connected to the connection between the first wall segment and the second wall segment, and the other end of the branch reinforcement wall is connected to the frame.

3. The threshold structure according to claim 1, characterized in that: The threshold structure also includes a plurality of front reinforcing walls, which are respectively connected between the load-bearing wall and the frame, and are arranged at intervals along the second direction. The angle between the second connecting wall and the first direction is greater than or equal to the angle between any of the front reinforcing walls and the first direction.

4. The threshold structure according to claim 1, characterized in that: The threshold structure includes a plurality of front reinforcing walls and a plurality of rear reinforcing walls, wherein the plurality of front reinforcing walls are arranged at intervals along the second direction, the plurality of front reinforcing walls are respectively connected between the force-bearing wall and the frame body, the plurality of rear reinforcing walls are arranged at intervals along the second direction in the energy absorbing chamber, the plurality of rear reinforcing walls are arranged one-to-one with the plurality of front reinforcing walls along the first direction, and the relatively arranged front reinforcing walls and the rear reinforcing walls are connected to the same position of the frame body.

5. The threshold structure according to claim 1, characterized in that: The frame includes a first side wall, a second side wall, a top wall and a bottom wall, the first side wall and the second side wall are spaced apart along a first direction, the top wall and the bottom wall are spaced apart along a second direction, the first side wall, the top wall, the second side wall and the bottom wall are sequentially connected to form the energy absorption chamber, and the first connecting wall and the second connecting wall are both connected to the first side wall.

6. The door sill structure according to claim 5, characterized in that: The top wall includes a third wall segment and a fourth wall segment that are bent and connected, the third wall segment is connected to the first side wall, the fourth wall segment is connected to the second side wall, and the connection between the third wall segment and the fourth wall segment is convexly arranged in a direction away from the bottom wall, and the plane where the bottom wall is located is perpendicular to the second direction.

7. The threshold structure according to any one of claims 1 to 6, characterized in that: The threshold structure further includes a reinforcement coating, which is coated on the outer surface of the frame and / or the outer surface of the load-bearing wall and / or the outer surface of the first connecting wall and / or the outer surface of the second connecting wall.

8. The door sill structure according to claim 7, characterized in that: The wall thickness of the stress-bearing wall is H1, the thickness of the reinforcement coating is H2, the wall thickness of the frame is H3, the wall thickness of the second connecting wall is H4, 0.6≤H2 / H1≤1.2 and / or 0.6≤H2 / H3≤1.2 and / or 0.6≤H2 / H4≤1.

2.

9. A vehicle, characterized in that: include: Car body; The rocker structure according to any one of claims 1 to 8, wherein the rocker structure is connected to the vehicle body.

10. The vehicle according to claim 9, characterized in that: The vehicle also includes a crossbeam and a battery pack. The crossbeam is arranged on a side of the frame of the threshold structure away from the load-bearing wall along the first direction. The battery pack is arranged on the lower side of the frame along the second direction. The top wall of the frame of the threshold structure includes a third wall segment and a fourth wall segment connected by a bend. The connection between the third wall segment and the fourth wall segment protrudes outward in a direction away from the battery pack.

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