Vehicle body threshold structure and vehicle

Abstract

The utility model provides a vehicle body doorsill structure and a vehicle, the vehicle body doorsill structure comprises a doorsill beam extending along the front-back direction of the whole vehicle and a side pedal mounting plate connected to the doorsill beam, the side pedal mounting plate is integrally formed by die casting and extends along the front-back direction of the whole vehicle, and the side pedal mounting plate is arranged on the doorsill beam in the left-right direction of the whole vehicle. One side of the side pedal mounting plate is connected to the doorsill beam, and the other side of the side pedal mounting plate extends towards the outside of the vehicle relative to the doorsill beam. According to the vehicle body threshold structure, the weight reduction of the threshold position is facilitated, the light weight of a vehicle body is facilitated, the side pedal mounting plate formed through die casting is utilized, the structural strength of the threshold position can be improved, the energy absorption space of the side portion of the vehicle body can be increased, the collision energy absorption capacity during side collision can be improved, and the side collision safety of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, in particular to a body sill structure. The utility model also relates to a vehicle applying the body sill structure. Background Art

[0002] The sill beam, also known as the body sill or threshold, is the large edge at the bottom of the car door and belongs to a part of the body frame. The sill beam connects the side panel and the bottom structure of the vehicle body, and plays a crucial role in the overall rigidity and safety of the vehicle.

[0003] The side step mounting plate is a pedal installed on the side of the car, also known as the side step or welcome step. The side step mounting plate is installed on the side of the vehicle, which is convenient for passengers to get on and off the vehicle, and also has a certain decorative and protective effect.

[0004] In existing vehicles, the side step mounting plate is generally made of steel sheet metal and is connected to the sill beam through a matching mounting bracket. The above mounting structure results in a large weight at the sill position, which is not conducive to vehicle body lightweighting. At the same time, the side step mounting plate made of steel sheet metal has a relatively high structural strength, and the energy absorption effect during collision is limited, which is not conducive to improving the side collision safety of the whole vehicle. Content of the Utility Model

[0005] In view of this, the utility model aims to propose a body sill structure, which has the effects of weight reduction and being conducive to vehicle body lightweighting on the basis of ensuring structural strength.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A body sill structure includes a sill beam extending in the front-rear direction of the whole vehicle, and a side step mounting plate connected to the sill beam;

[0008] The side step mounting plate is integrally die-cast and extends in the front-rear direction of the whole vehicle. In the left-right direction of the whole vehicle, one side of the side step mounting plate is connected to the sill beam, and the other side of the side step mounting plate extends outward relative to the sill beam.

[0009] Further, the side step mounting plate includes a connecting portion connected to the sill beam and an extending portion connected to the connecting portion, and the connecting portion is connected to the bottom of the sill beam.

[0010] Further, the connecting portion is connected to the sill beam through a screw connection structure, and the screw connection structure includes a first screw connection structure arranged in the left-right direction of the whole vehicle and a second screw connection structure arranged in the up-down direction of the whole vehicle.

[0011] Further, a groove is provided at the bottom of the side step mounting plate. The groove includes an outer groove at the bottom of the outer extension portion and an inner groove at the bottom of the connection portion.

[0012] Transverse reinforcing ribs arranged in the left - right direction of the whole vehicle are provided in both the outer groove and the inner groove.

[0013] Further, the depression depth of the inner groove is greater than that of the outer groove, and the height of the transverse reinforcing rib in the inner groove is greater than that of the transverse reinforcing rib in the outer groove.

[0014] Further, the transverse reinforcing ribs in the outer groove and the inner groove are multiple and arranged at intervals in the front - rear direction of the whole vehicle.

[0015] Viewed from the left - right direction of the whole vehicle, the transverse reinforcing ribs in the outer groove and the inner groove are arranged in one - to - one correspondence and connected together; and / or, at least longitudinal reinforcing ribs arranged in the front - rear direction of the whole vehicle are provided in the outer groove, and the longitudinal reinforcing ribs are cross - connected with each of the transverse reinforcing ribs in the outer groove.

[0016] Further, the side step mounting plate is formed by die - casting of aluminum alloy or magnesium alloy; and / or,

[0017] The sill beam is a beam structure formed by buckling and connecting multiple steel sheet metals, and a sill beam cavity is formed inside the sill beam.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] For the body sill structure of the present utility model, by arranging a side step mounting plate formed by die - casting at the position of the sill beam, integrating the existing skeleton and the mounting plate together, it helps to reduce the weight at the sill position, is beneficial to the lightweight of the vehicle body. At the same time, using the side step mounting plate formed by die - casting can not only increase the structural strength at the sill position, increase the energy absorption space on the side of the vehicle body, but also improve the collision energy absorption ability during side impact, thus being beneficial to improving the side - impact safety of the whole vehicle.

[0020] In addition, the side step mounting plate includes a connection portion and an outer extension portion, and the side step mounting plate is connected to the bottom of the sill beam through the connection portion, which is convenient for the layout of the side step mounting plate at the sill beam and is also beneficial to the connection between the two. The screw - connection structure includes a first screw - connection structure arranged in the left - right direction of the whole vehicle and a second screw - connection structure arranged in the up - down direction of the whole vehicle, which can be connected in two directions of the Y - direction (left - right direction) and Z - direction (up - down direction) of the whole vehicle, can ensure the stability of the connection between the connection portion and the sill beam, can prevent the side step mounting plate from becoming unstable during the collision process, and thus prevent affecting its energy absorption effect.

[0021] In addition, a groove is provided at the bottom of the side step mounting plate, which can form a cavity structure at the bottom of the side step mounting plate. By utilizing the characteristic of high strength of the cavity structure, the structural strength of the side step mounting plate itself can be increased. At the same time, by setting transverse reinforcing ribs, not only can the structural strength of the side step mounting plate be further increased, but also it can serve as a side collision force transmission path during a vehicle side collision, improving the side collision force transmission effect. By limiting the different depths of the inner groove and the outer groove, the heights of the corresponding transverse reinforcing ribs are different, and multi-level collision energy absorption zones can be formed at the side step mounting plate by using the reinforcing ribs with different heights, which helps to improve the energy absorption effect of the side step mounting plate.

[0022] Furthermore, the transverse reinforcing ribs are arranged in multiple intervals, and the inner and outer transverse reinforcing ribs are arranged in one-to-one correspondence, which can ensure the strengthening effect of the transverse reinforcing ribs. By setting longitudinal reinforcing ribs, the transverse and longitudinal reinforcing ribs can be cross-connected to form a frame structure, which can further increase the strengthening effect of the reinforcing ribs.

[0023] As for limiting the side step mounting plate to be formed by aluminum alloy or magnesium alloy, the die-casting technology is mature, which can ensure the forming effect of the side step mounting plate and is also more conducive to reducing the weight of the side step mounting plate. The sill beam adopts a steel sheet metal beam body, which can not affect the welding between the body sill position and other surrounding components while using the die-cast side step mounting plate, and can reduce the impact on the general assembly welding line operation.

[0024] Another object of the present invention is to provide a vehicle, at least one side of the middle part of the vehicle is provided with the body sill structure as described above.

[0025] Further, a battery pack is provided inside the sill beam in the middle part of the vehicle, and a connecting cross beam arranged along the left-right direction of the vehicle is provided between the side step mounting plate and the frame of the battery pack.

[0026] Further, a seat mounting cross beam connected to the sill beam is provided in the middle part of the vehicle. The seat mounting cross beam is located above the battery pack, and the connecting cross beam and the seat mounting cross beam are arranged corresponding to each other in the up-down direction of the vehicle.

[0027] The vehicle of the present invention and the above body sill structure have the same beneficial effects as the prior art. In addition, by connecting with the battery pack frame, the overall torsional stiffness of the middle part of the vehicle body can be increased. The connecting cross beam and the seat mounting cross beam are arranged corresponding to each other up and down, which can form a double cross beam force transmission structure, helping to improve the stability of side collision force transmission and enhancing the force transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0029] Figure 1 It is a schematic structural diagram of the body sill structure in the application state according to the first embodiment of the present utility model;

[0030] Figure 2 is Figure 1 a schematic structural diagram from another perspective;

[0031] Figure 3 It is an assembly drawing of the side step mounting plate and the sill beam according to the first embodiment of the present utility model;

[0032] Figure 4 is Figure 3 a schematic structural diagram from another perspective;

[0033] Figure 5 It is a schematic structural diagram of the side step mounting plate according to the first embodiment of the present utility model;

[0034] Figure 6 is Figure 5 a schematic structural diagram from another perspective.

[0035] Explanation of reference numerals:

[0036] 1, sill beam; 2, side step mounting plate; 3, first screwing structure; 4, second screwing structure; 5, battery pack; 6, frame; 7, connecting cross beam; 8, seat mounting cross beam; 9, third screwing structure; 10, fourth screwing structure;

[0037] 201, connecting part; 2011, inner groove; 2012, connecting plate; 202, extending part; 2021, outer groove; 203, transverse reinforcing rib; 204, longitudinal reinforcing rib. Detailed implementation manners

[0038] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0039] In the description of the present utility model, it should be noted that based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, if terms such as "first" and "second" appear, they are only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0041] In addition, in the description of the present utility model, the front-rear direction is the front-rear direction of the vehicle, usually referring to the length direction of the vehicle, the left-right direction is the left-right direction of the vehicle, usually referring to the width direction of the vehicle, and the up-down direction is the height direction of the vehicle. In the drawings: the arrow in front points to the head of the vehicle, the arrow at the back points to the tail of the vehicle, the arrow above points to the top of the vehicle, and the arrow below points to the bottom of the vehicle. Sitting in the driver's seat facing the head of the vehicle, the side where the left hand is located is the left side, and the side where the right hand is located is the right side. In the drawings, the arrow on the left points to the left side of the vehicle, and the arrow on the right points to the right side of the vehicle. The terms "inside" and "outside" are relative. Among them, "inside" refers to the internal space of the vehicle, and "outside" refers to outside the vehicle body, that is, the position far from the internal space of the vehicle.

[0042] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0043] Embodiment 1

[0044] This embodiment relates to a body sill structure, which integrates the side step mounting plate 2 and directly connects it to the sill beam 1. On the basis of ensuring the structural strength, it has the effects of weight reduction and facilitating vehicle body lightweight, and is also beneficial to improving the side impact performance of the vehicle.

[0045] Based on the above design concept, an exemplary structure of the body sill structure in this embodiment under the application state is as Figures 1 to 4 shown in. In the overall structure, the door sill structure of this embodiment mainly includes a sill beam 1 extending along the front-rear direction of the whole vehicle, and a side step mounting plate 2 connected to the sill beam 1.

[0046] It should be noted that the body sill structure of this embodiment can be applied to both the left side and the right side of the vehicle. Since the structures on the left and right sides of the vehicle are generally symmetrical, the body sill structure installed on the right side of the vehicle will be taken as an example for description below.

[0047] For the convenience of processing, in this embodiment, the side step mounting plate 2 is integrally die-cast. The side step mounting plate 2 extends in the front-rear direction of the whole vehicle, and on the left-right direction of the whole vehicle, one side of the side step mounting plate 2 is connected to the sill beam 1, and the other side of the side step mounting plate 2 extends outward relative to the sill beam 1. In this way, the existing mounting skeleton and the mounting plate can be integrated into an integral structure, and the number of parts can be reduced.

[0048] In this embodiment, setting the die-cast side step mounting plate 2 helps to reduce the weight at the sill position, which is beneficial to the lightweight of the vehicle body. The die-casting of the side step mounting plate 2 can not only increase the structural strength of the sill position and the energy absorption space on the side of the vehicle body, but also improve the collision energy absorption ability during side collision.

[0049] Specifically, as Figures 3 to 6 shown, as a preferred embodiment, the side step mounting plate 2 includes a connecting portion 201 connected to the sill beam 1 and an extending portion 202 connected to the connecting portion 201. Both the connecting portion and the extending portion extend in the front-rear direction of the whole vehicle, and the connecting portion 201 is connected to the bottom of the sill beam 1.

[0050] In this structure, the side step mounting plate 2 includes the connecting portion 201 and the extending portion 202, and the side step mounting plate 2 is connected to the bottom of the sill beam 1 through the connecting portion 201, which is convenient for the layout of the side step mounting plate 2 at the sill beam 1 and is also beneficial to the connection between the two.

[0051] For the convenience of installation and disassembly, as a preferred embodiment, the aforementioned connecting portion 201 is connected to the sill beam 1 through a screwing structure, and the screwing structure includes a first screwing structure 3 arranged in the left-right direction of the whole vehicle and a second screwing structure 4 arranged in the up-down direction of the whole vehicle.

[0052] Continuing to refer to Figure 5 and Figure 6 shown, a connecting plate 2012 extending upward in the up-down direction of the whole vehicle is formed on the connecting portion 201. The connecting plate 2012 is strip-shaped and extends in the front-rear direction of the whole vehicle. The aforementioned first screwing structure 3 includes first connection holes correspondingly arranged on the connecting plate 2012 and the sill beam 1, and first bolt pairs passing through the first connection holes. The axial directions of the first connection holes and the first bolt pairs both extend in the left-right direction of the whole vehicle, and the connecting portion 201 of the side step mounting plate 2 and the sill beam 1 can be connected together in the left-right direction of the whole vehicle.

[0053] To ensure the structural strength, a flanging that bends outward is further provided on the side of the connecting plate 2012 away from the connecting portion 201. The flanging is strip-shaped and extends in the front-rear direction of the whole vehicle, which has a good effect of strengthening the structural strength of the connecting plate 2012.

[0054] The aforementioned second screwing structure 4 includes a connecting portion 201, a second connecting hole correspondingly arranged on the sill beam 1, and a second bolt pair arranged through the second connecting hole. The axial directions of the second connecting hole and the second bolt pair both extend along the up-and-down direction of the whole vehicle, and can connect the connecting portion 201 of the side step mounting plate 2 and the sill beam 1 together in the up-and-down direction of the whole vehicle.

[0055] In the above structure, the screwing structure includes a first screwing structure 3 arranged along the left-and-right direction of the whole vehicle and a second screwing structure 4 arranged along the up-and-down direction of the whole vehicle, which can be connected in two directions of the Y direction (left-and-right direction) and the Z direction (up-and-down direction) of the whole vehicle, ensuring the stability of the connection between the connecting portion 201 and the sill beam 1, preventing the side step mounting plate 2 from becoming unstable during a collision, and preventing the impact on its energy absorption effect.

[0056] To improve the reliability of the connection between the connecting portion 201 and the sill beam 1, both the aforementioned first screwing structure 3 and second screwing structure 4 are multiple. The multiple first screwing structures 3 are arranged at intervals along the front-and-back direction of the whole vehicle, and the multiple second screwing structures 4 are also arranged at intervals along the front-and-back direction of the whole vehicle, enabling the connecting portion 201 and the sill beam 1 to be firmly and reliably connected together.

[0057] In this embodiment, the numbers of the first screwing structure 3 and the second screwing structure 4 are not specifically limited and can be arranged according to actual needs, as long as the reliability of the connection between the connecting portion 201 and the sill beam 1 can be ensured.

[0058] To achieve a better weight reduction effect, as a preferred embodiment, a groove is provided at the bottom of the side step mounting plate 2. The groove includes an outer groove 2021 at the bottom of the outer extension portion 202 and an inner groove 2011 at the bottom of the connecting portion 201. Both the outer groove 2021 and the inner groove 2011 extend along the front-and-back direction of the whole vehicle, which is convenient for processing and has a good effect of weight reduction, material saving, and cost reduction.

[0059] And to prevent the structural strength of the side step mounting plate 2 from deteriorating due to the provision of the groove, in a preferred embodiment, as Figure 4 and Figure 6 shown, transverse reinforcing ribs 203 arranged along the left-and-right direction of the whole vehicle are provided in both the outer groove 2021 and the inner groove 2011.

[0060] In this structure, by providing a groove at the bottom of the side step mounting plate 2, a cavity structure can be formed at the bottom of the side step mounting plate 2. In this way, the characteristics of high strength of the cavity structure can be utilized to increase the structural strength of the side step mounting plate 2 itself. At the same time, by providing the transverse reinforcing ribs 203, not only can the structural strength of the side step mounting plate 2 be further increased, but it can also serve as a side collision force transmission path during a side collision of the whole vehicle, improving the side collision force transmission effect.

[0061] Continue to refer toFigure 4 and Figure 6 As shown in Figure 6 , as a preferred embodiment, the recess depth of the inner groove 2011 is greater than that of the outer groove 2021, and the height of the transverse reinforcing rib 203 in the inner groove 2011 is greater than that of the transverse reinforcing rib 203 in the outer groove 2021. Here, the depth relationship between the inner groove 2011 and the outer groove 2021 is defined such that the depths of the inner and outer grooves 2021 are different, and the heights of the corresponding transverse reinforcing ribs 203 are different. Multi-level collision energy absorption zones can be formed at the side step mounting plate 2 by using the reinforcing ribs with different heights, which helps to improve the energy absorption effect of the side step mounting plate 2.

[0062] To further improve the structural strength of the side step mounting plate 2, as a preferred embodiment, the transverse reinforcing ribs 203 in both the outer groove 2021 and the inner groove 2011 are multiple, and the multiple transverse reinforcing ribs 203 in the outer groove 2021 and the multiple transverse reinforcing ribs 203 in the inner groove 2011 are arranged at intervals in the longitudinal direction of the whole vehicle. Here, the number of the transverse reinforcing ribs 203 is not specifically limited, as long as the structural strength of the side step mounting plate 2 can be ensured.

[0063] In a preferred embodiment, from the left-right direction of the whole vehicle, the transverse reinforcing ribs 203 in the outer groove 2021 and the inner groove 2011 are arranged in one-to-one correspondence and connected together, which can ensure the strengthening effect of the transverse reinforcing ribs 203, and thus can preferably ensure the structural strength of the side step mounting plate 2. During a side collision of the vehicle, the connected transverse reinforcing ribs 203 also have a good force transmission effect, and when applied to the vehicle, it is beneficial to improve the side collision performance of the vehicle.

[0064] In a further preferred embodiment, at least a longitudinal reinforcing rib 204 arranged in the longitudinal direction of the whole vehicle is provided in the outer groove 2021, and the longitudinal reinforcing rib 204 is cross-connected with each transverse reinforcing rib 203 in the outer groove 2021, so that the longitudinal reinforcing rib 204 and the transverse reinforcing rib 203 in the outer groove 2021 are cross-connected to form a frame structure, which can further increase the strengthening effect of the reinforcing rib.

[0065] It should be noted that in addition to arranging the longitudinal reinforcing rib 204 in the outer groove 2021, of course, the longitudinal reinforcing rib 204 can also be arranged in the inner groove 2011. And the number of the longitudinal reinforcing ribs 204 in the outer groove 2021 can be Figure 6 as shown in one, or other numbers, such as two, three, etc. In this embodiment, the number of the longitudinal reinforcing ribs 204 in the outer groove 2021 and the inner groove 2011 can be actually arranged according to the structural strength requirements.

[0066] In this embodiment, as a preferred implementation mode, the side step mounting plate 2 is die-casted by aluminum alloy or magnesium alloy. The die-casting technology is mature, which can better ensure the molding effect of the side step mounting plate 2. Compared with the existing steel sheet metal pedal structure, it is also more conducive to weight reduction of the side step mounting plate 2 and can better meet the demand of lightweight vehicle.

[0067] In order to ensure the structural strength of the threshold beam 1, as a preferred embodiment, the threshold beam 1 adopts a beam structure formed by a plurality of steel sheet metals connected by buckling, and a threshold beam cavity is formed inside the threshold beam 1. In this structure, the threshold beam 1 is formed by connecting steel sheet metals, and the side step mounting plate 2 formed by die casting can be used without affecting the welding between the body threshold position and other surrounding components, which can reduce the impact on the assembly welding line operation.

[0068] In this embodiment, the threshold beam 1 includes a threshold beam inner plate and a threshold beam outer plate made of steel sheet metal, the threshold beam inner plate and the threshold beam outer plate are connected in the left-right direction of the vehicle, and the threshold beam outer plate is arranged on the outer side of the threshold beam inner plate. In the front-back direction of the vehicle, the threshold beam inner plate and the threshold beam outer plate are both connected by multiple sections of steel sheet metal, and the threshold beam cavity formed between the two extends along the front-back direction of the vehicle, which is convenient to process and can be better connected with surrounding components.

[0069] The vehicle body sill structure of the present embodiment, the side step mounting plate 2 integrates the mounting frame and the existing side step mounting plate, which helps to reduce the weight of the sill position and is beneficial to the lightweight of the vehicle body. It can not only increase the structural strength of the sill position and increase the energy absorption space of the side of the vehicle body, but also the collision energy absorption capacity during side collision, which is beneficial to improving the side collision safety of the whole vehicle. The side step mounting plate 2 is installed on the sill beam 1, which is convenient for connection with surrounding components and has little impact on the operation of the final assembly welding line.

[0070] Embodiment 2

[0071] This embodiment relates to a vehicle, such as Figure 2 As shown, at least one side of the middle part of the vehicle is provided with a body door sill structure as in Example 1. As in this embodiment, body door sill structures as in Example 1 are provided on both the left and right sides of the middle part of the vehicle, and it is understandable that it is also feasible to provide the body door sill structure as in Example 1 only on one side.

[0072] In terms of specific structure, a battery pack 5 is provided in the middle of the vehicle and is located inside the door sill beam 1, and a connecting crossbeam 7 is provided between the side step mounting plate 2 and the frame 6 of the battery pack 5 and is arranged along the left and right direction of the vehicle. Figure 2 As shown, the connecting crossbeam 7 can be made of existing profiles, which is low in cost. For example, its cross section can be a "日"-shaped profile, which has good structural strength. In addition, the cross section of the connecting crossbeam 7 can also be other shapes, such as a "目"-shaped, "田"-shaped, etc.

[0073] As shown Figure 2 and Figure 4 In this embodiment, one end of the connecting crossbeam 7 is connected to the frame 6 through the third screwing structure 9, and the other end of the connecting crossbeam 7 is connected to the connecting part 201 through the fourth screwing structure 10. By connecting the vehicle to the frame 6 of the battery pack 5, the overall torsional stiffness of the middle part of the vehicle body can be increased.

[0074] Specifically, the third screwing structure 9 includes third connection holes correspondingly arranged on the connecting crossbeam 7 and the frame 6, and a third bolt pair passing through the third connection holes. The third bolt pair connects the connecting crossbeam 7 and the frame 6 together in the up-and-down direction of the whole vehicle. The fourth screwing structure 10 includes fourth connection holes correspondingly arranged on the connecting crossbeam 7 and the connecting part 201, and a fourth bolt pair passing through the fourth connection holes. The fourth bolt pair connects the connecting crossbeam 7 and the connecting part 201 together in the up-and-down direction of the whole vehicle, which is relatively convenient for installation and disassembly.

[0075] As a preferred embodiment, a seat mounting crossbeam 8 connected to the sill beam 1 is provided in the middle of the vehicle. The seat mounting crossbeam 8 is located above the battery pack 5, and the connecting crossbeam 7 and the seat mounting crossbeam 8 are correspondingly arranged in the up-and-down direction of the whole vehicle. In this way, a double-crossbeam force transmission structure can be formed, which helps to improve the stability of side collision force transmission and enhance the force transmission effect.

[0076] Continuing to refer to Figure 2 As shown, there are two seat mounting crossbeams 8, and each seat mounting crossbeam 8 extends along the left-right direction of the whole vehicle, and the two seat mounting crossbeams 8 are arranged at intervals in the front-rear direction. There are four connecting crossbeams 7, with two connecting crossbeams 7 on each of the left and right sides of the battery pack 5, and each connecting crossbeam 7 extends along the left-right direction of the whole vehicle. The connecting crossbeams 7 on the left and right sides of the battery pack 5 are symmetrically arranged, and there are two connecting crossbeams 7 below each seat mounting crossbeam 8 in the vehicle direction, which has a good effect of improving the side collision force transmission performance of the vehicle.

[0077] For the vehicle of this embodiment, by applying the body sill structure of Embodiment 1, it is beneficial to reduce the total weight of the vehicle, can ensure good structural strength, is beneficial to improving the side collision performance of the vehicle, and is also convenient for connecting with surrounding components, thus having good practicability.

[0078] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle body door sill structure, characterized in that: It comprises a threshold beam (1) extending in the front-rear direction of the whole vehicle, and a side step mounting plate (2) connected to the threshold beam (1); The side step mounting plate (2) is integrally die-cast and extends in the front-rear direction of the vehicle. In the left-right direction of the vehicle, one side of the side step mounting plate (2) is connected to the door sill beam (1), and the other side of the side step mounting plate (2) extends outward from the vehicle relative to the door sill beam (1).

2. The vehicle body rocker structure according to claim 1, characterized in that: The side step mounting plate (2) comprises a connecting portion (201) connected to the door sill beam (1), and an extension portion (202) connected to the connecting portion (201), and the connecting portion (201) is connected to the bottom of the door sill beam (1).

3. The vehicle body rocker structure according to claim 2, characterized in that: The connecting portion (201) is connected to the door sill beam (1) via a screw connection structure, and the screw connection structure comprises a first screw connection structure (3) arranged along the left-right direction of the vehicle, and a second screw connection structure (4) arranged along the up-down direction of the vehicle.

4. The vehicle body rocker structure according to claim 2, characterized in that: The bottom of the side step mounting plate (2) is provided with a groove, the groove comprising an outer groove (2021) located at the bottom of the extension part (202), and an inner groove (2011) located at the bottom of the connecting part (201); Both the outer groove (2021) and the inner groove (2011) are provided with transverse reinforcing ribs (203) arranged along the left-right direction of the vehicle.

5. The vehicle body rocker structure according to claim 4, characterized in that: The recessed depth of the inner groove (2011) is greater than the recessed depth of the outer groove (2021), and the height of the transverse reinforcing rib (203) in the inner groove (2011) is greater than the height of the transverse reinforcing rib (203) in the outer groove (2021).

6. The vehicle body rocker structure according to claim 4, characterized in that: The transverse reinforcing ribs (203) in the outer groove (2021) and the inner groove (2011) are both multiple and spaced apart along the front-rear direction of the vehicle; Viewed from the left and right directions of the vehicle, the transverse reinforcing ribs (203) in the outer groove (2021) and the inner groove (2011) are arranged one by one and connected together; and / or, at least in the outer groove (2021) there are longitudinal reinforcing ribs (204) arranged along the front and rear directions of the vehicle, and the longitudinal reinforcing ribs (204) are cross-connected with each of the transverse reinforcing ribs (203) in the outer groove (2021).

7. The vehicle body rocker structure according to any one of claims 1 to 6, characterized in that: The side step mounting plate (2) is formed by die-casting of an aluminum alloy or a magnesium alloy; and / or, The threshold beam (1) adopts a beam structure formed by a plurality of steel sheet metals being fastened and connected, and a threshold beam cavity is formed inside the threshold beam (1).

8. A vehicle, characterized in that: At least one side of the middle portion of the vehicle is provided with the vehicle body rocker structure according to any one of claims 1 to 7.

9. The vehicle according to claim 8, characterized in that: A battery pack (5) located inside the door sill beam (1) is provided in the middle of the vehicle, and a connecting crossbeam (7) arranged along the left-right direction of the entire vehicle is provided between the side step mounting plate (2) and the frame (6) of the battery pack (5).

10. The vehicle according to claim 9, characterized in that: A seat mounting cross beam (8) connected to the door sill beam (1) is provided in the middle of the vehicle, the seat mounting cross beam (8) is located above the battery pack (5), and the connecting cross beam (7) and the seat mounting cross beam (8) are arranged correspondingly in the upper and lower directions of the vehicle.

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