A vehicle body rocker assembly, a vehicle body side sill assembly, and a vehicle

Abstract

The application relates to the technical field of vehicle structure, in particular to a vehicle body door sill assembly, a vehicle body front side wall assembly and a vehicle. The vehicle body door sill assembly comprises a door sill inner plate, a door sill outer plate, a door sill reinforcing beam and at least one door sill support, the door sill inner plate is connected to the inner side of the door sill outer plate to form a cavity; the door sill support comprises a first connecting end, a support main body and a second connecting end, the support main body and the door sill reinforcing beam are located in the cavity, the support main body is provided with a first supporting cavity, the door sill reinforcing beam is fixed in the first supporting cavity along the length direction of the door sill reinforcing beam; the first connecting end extends upward between the door sill inner plate and the door sill outer plate, the second connecting end extends downward between the door sill inner plate and the door sill outer plate, and the first connecting end and the second connecting end are connected to the door sill inner plate and the door sill outer plate. A closed anti-collision structure in the shape of a square frame is formed, the connecting strength between the door sill reinforcing beam, the door sill support and the door sill inner plate and the door sill outer plate is improved, and the structural integrity of the vehicle body door sill assembly is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle structure technology, and in particular to a vehicle body door sill assembly, a vehicle body front side panel assembly, and a vehicle. Background Technology

[0002] As an important component of the vehicle's passenger compartment's impact-resistant structure, the door sill is mainly responsible for meeting the impact resistance and stiffness requirements of the passenger compartment under conditions such as side impacts and pole impacts.

[0003] Existing door sills incorporate a door sill reinforcement structure between the inner and outer door sill panels to enhance the overall strength of the door sill.

[0004] However, the existing thresholds and threshold reinforcement structures have poor structural strength. Summary of the Invention

[0005] This application provides a vehicle sill assembly, a front side panel assembly, and a vehicle, aiming to improve the problem of poor structural strength of existing sill reinforcement structures.

[0006] To address the aforementioned issues, this application provides a vehicle sill assembly, comprising an inner sill plate, an outer sill plate, a sill reinforcement beam, and at least one sill bracket. The inner sill plate is connected to the inner side of the outer sill plate to form a cavity between them. The sill bracket includes a first connecting end, a bracket body, and a second connecting end connected in sequence. The bracket body and the sill reinforcement beam are located within the cavity. The bracket body has a first supporting cavity, and the sill reinforcement beam is fixedly inserted into the first supporting cavity along its length. The first connecting end extends upward to the space between the inner sill plate and the outer sill plate, and the second connecting end extends downward to the space between the inner sill plate and the outer sill plate. Both the first connecting end and the second connecting end are connected to the inner sill plate and the outer sill plate.

[0007] Furthermore, the sill reinforcement beam includes an upper cavity and a lower cavity, the upper cavity being located on the side of the lower cavity facing away from the support body, and the upper cavity and the lower cavity extending along the length direction of the sill reinforcement beam.

[0008] Furthermore, in the direction of the upper cavity near the lower cavity, the cross-sectional shape of the upper cavity gradually increases in the height direction of the sill reinforcement beam; the lower cavity includes at least two sub-cavities, and the at least two sub-cavities are spaced apart along the height direction of the sill reinforcement beam.

[0009] Furthermore, the sill inner panel includes a sill inner panel front section, an inner panel body, a sill rear connecting plate, and a sill inner panel rear section. The sill inner panel front section is connected to the front end of the inner panel body along the length direction of the sill reinforcing beam, and the sill inner panel rear section is connected to the rear end of the inner panel body along the length direction of the sill reinforcing beam via the sill rear connecting plate. The inner panel body has a groove with an opening facing the outer sill plate. A second support cavity is provided on the front section of the inner sill plate facing the outer sill plate. A third support cavity is provided on the rear connecting plate of the sill facing the outer sill plate. The sill reinforcement beam is inserted and fixed in the second support cavity, the first support cavity, and the third support cavity.

[0010] Furthermore, multiple threshold supports are provided, and the multiple threshold supports are distributed at intervals along the length direction of the threshold reinforcing beam.

[0011] Furthermore, the main body of the bracket is a support plate, the inner sill plate has a groove with an opening facing the outer sill plate, the support plate is vertically fixed in the groove, the support plate abuts against the inner wall of the groove, and the side of the support plate extending out of the groove is connected to the first connecting end and the second connecting end.

[0012] Furthermore, the upper side of the inner sill plate is provided with a vertical first upward flange, the lower side of the inner sill plate is provided with a vertical first downward flange, the upper side of the outer sill plate is provided with a vertical second upward flange, and the lower side of the outer sill plate is provided with a vertical second downward flange. The first connecting end is sandwiched between the first upper flange and the second upper flange, and the second connecting plate is sandwiched between the first lower flange and the second lower flange.

[0013] On the other hand, this application also provides a front side panel assembly, including an inner A-pillar panel, an outer side panel, and the aforementioned vehicle sill assembly, wherein the front end of the inner sill panel is connected to the bottom end of the inner A-pillar panel, and the outer side panel is connected to the outside of the inner sill panel.

[0014] Furthermore, the sill outer panel is integrally formed on the bottom side of the side panel outer panel.

[0015] On the other hand, this application also provides a vehicle including the aforementioned front body panel assembly.

[0016] In the vehicle sill assembly of this application, the sill reinforcement beam is located in the cavity formed between the inner sill panel and the outer sill panel. The sill reinforcement beam is inserted and fixed in the first support cavity of the sill bracket. The first connecting end of the sill bracket is fixedly connected to the inner sill panel and the outer sill panel, and the second connecting end of the sill bracket is fixedly connected to the inner sill panel and the outer sill panel, forming a closed U-shaped anti-collision structure. This improves the connection strength between the sill reinforcement beam, the sill bracket, and the inner and outer sill panels, so that the sill bracket can not only support the sill reinforcement beam, but also strengthen the structure and improve the overall structural integrity of the vehicle sill assembly.

[0017] In this application, a sill reinforcement beam is used as the main structure, and a sill bracket is used as the main transmission path connector. Under conditions such as side impact and column impact, the outer sill plate deforms, transmitting the lateral impact force to the sill reinforcement beam. The sill reinforcement beam is crushed and deformed, and the impact force is transmitted to the inner sill plate by the sill bracket connected to the sill reinforcement beam, so as to effectively improve the impact force transmission efficiency and improve the impact resistance and rigidity of the sill. Attached Figure Description

[0018] Figure 1 This is an exploded view of the front side panel assembly of the vehicle body provided in one embodiment of this application when it is connected to the floor; Figure 2 yes Figure 1 Cross-sectional view of the vehicle door sill assembly; Figure 3 yes Figure 1 Exploded views of the inner and outer sill plates in the design; Figure 4 yes Figure 1 A schematic diagram of the sill reinforcement beam installed on the inner sill plate; Figure 5 yes Figure 4 A schematic diagram of the installation of the threshold reinforcement beam; Figure 6 yes Figure 5 The cross-sectional view of the threshold reinforcement beam in the middle.

[0019] The reference numerals in the accompanying drawings are as follows: 100. A-pillar inner panel; 200. Side panel outer panel; 300. Front floor; 400. Front floor front crossbeam; 500. Front floor rear crossbeam; 600. Rear seat crossbeam; 1. Sill reinforcement beam; 11. Upper cavity; 12. Lower cavity; 121. Sub-cavity; 2. Inner sill plate; 21. First upper flange; 22. First lower flange; 23. Groove; 24. Inner plate body; 25. Front section of inner sill plate; 26. Rear connecting plate of sill plate; 27. Rear section of inner sill plate; 3. Outer sill plate; 31. Second upper flange; 32. Second lower flange; 4. Sill bracket; 41. First connecting end; 42. Second connecting end; 43. Bracket body; 44. First support cavity. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] The following directions are defined as follows: "X direction" refers to the front-to-back direction of the vehicle, "Y direction" refers to the left-to-right direction of the vehicle, and "Z direction" refers to the up-to-down direction of the vehicle. "Inner" and "outer" are relative to the vehicle body. "Inner" refers to the inside of the vehicle body, and "outer" refers to the outside of the vehicle body.

[0022] The door sill is an important component of the vehicle's frame and body. It mainly bears the performance requirements of impact resistance and rigidity under conditions such as side impact and pole impact of the passenger compartment, as well as the functional requirements of installing battery packs and door sill trim panels.

[0023] In the prior art, a sill reinforcement structure is set between the inner sill plate and the outer sill plate to improve the overall impact resistance and rigidity of the sill. The sill reinforcement structure includes a sill reinforcement beam and a sill bracket. The lower end of the sill bracket is welded to the inner sill plate, and the upper end of the sill bracket is fixedly connected to the sill reinforcement beam by a bolt assembly.

[0024] In the aforementioned sill reinforcement structure, the sill reinforcement beam is only connected to the inner sill plate through the sill bracket at the lower end. The connection strength and stability of the sill reinforcement beam are poor, and the overall impact resistance and stiffness of the sill are only slightly improved. This is not conducive to the transmission of collision force, which makes the sill reinforcement beam prone to overturning under side impact, column impact and other conditions.

[0025] To address the aforementioned problems, this application provides a front side panel assembly for a vehicle body, such as... Figures 1 to 3 As shown, it includes an A-pillar inner panel 100, a side outer panel 200, and a vehicle sill assembly. The vehicle sill assembly includes a sill inner panel 2, a sill outer panel 3, a sill reinforcing beam 1, and at least one sill bracket 4. The front end of the sill inner panel 2 is connected to the bottom end of the A-pillar inner panel 100, the side outer panel 200 is connected to the outside of the sill inner panel 2, and the sill inner panel 2 is connected to the inside of the sill outer panel 3 to form a cavity between the two.

[0026] The sill bracket 4 includes a first connecting end 41, a bracket body 43, and a second connecting end 42 connected in sequence. The bracket body 43 and the sill reinforcing beam 1 are located in the cavity. The bracket body 43 is provided with a first supporting cavity 44. The sill reinforcing beam 1 is inserted and fixed in the first supporting cavity 44 along its length direction.

[0027] The first connecting end 41 extends upward to the space between the inner sill plate 2 and the outer sill plate 3, and the second connecting end 42 extends downward to the space between the inner sill plate 2 and the outer sill plate 3. Both the first connecting end 41 and the second connecting end 42 are connected to the inner sill plate 2 and the outer sill plate 3.

[0028] When assembling the vehicle sill assembly, the first support cavity 44 of the sill bracket 4 can pre-position the installation position of the sill reinforcement beam 1, facilitating subsequent fixing and connection. Moreover, the setting of the first support cavity 44 is more conducive to the sill bracket 4 supporting the sill reinforcement beam 1 in the height and horizontal directions, improving the integrity and connection strength between the sill reinforcement beam 1 and the sill bracket 4, and preventing the sill reinforcement beam 1 from flipping over.

[0029] Specifically, such as Figure 2 As shown, the sill reinforcement beam 1 is located in the cavity formed between the inner sill plate 2 and the outer sill plate 3. The sill reinforcement beam 1 is inserted and fixed in the first support cavity 44 of the sill bracket 4. The first connecting end 41 of the sill bracket 4 is fixedly connected to the inner sill plate 2 and the outer sill plate 3, and the second connecting end 42 of the sill bracket 4 is fixedly connected to the inner sill plate 2 and the outer sill plate 3, forming a closed U-shaped anti-collision structure. This improves the connection strength between the sill reinforcement beam 1, the sill bracket 4, and the inner sill plate 2 and the outer sill plate 3, so that the sill bracket 4 can not only support the sill reinforcement beam 1, but also play a role in strengthening the structure and improving the overall structural integrity of the vehicle sill assembly.

[0030] Under conditions such as side impact and column impact, the outer sill plate 3 deforms, transferring the lateral impact force to the sill reinforcement beam 1. The sill reinforcement beam 1 is crushed and deformed, and the impact force is transferred to the inner sill plate 2 by the sill bracket 4 connected to the sill reinforcement beam 1. By using the sill reinforcement beam 1 as the main structure and the sill bracket 4 as the main transmission path connector, the impact force transmission efficiency is effectively improved, and the impact resistance and rigidity of the sill are enhanced.

[0031] In addition, compared with the existing situation where different sizes and quantities of patch plates or brackets are added according to the structural strength requirements of different vehicles, the reinforcing beam of this application can match the crash performance requirements of different weight vehicles by changing the wall thickness, so as to meet the differentiated crash performance requirements of different vehicle models, thereby realizing the common design of sill reinforcing beam 1 and sill bracket 4, and thus realizing the platform assembly and platform expansion requirements.

[0032] Example 1 Reference Appendix Figure 3, the rocker outer panel 3 is integrally formed on the bottom side of the side outer panel 200, so as to reduce the number of parts, reduce the use of complex processes such as welding and self-piercing riveting, improve production efficiency, and simplify the manufacturing process and processing cost.

[0033] wherein, Figure 3 the side outer panel 200 is integrated with the rocker outer panel 3, A-pillar outer panel, B-pillar and upper side beam to form a closed door ring structure.

[0034] Specifically, the rocker inner panel 2 and the rocker outer panel 3 are stamped from high-strength steel material, and the rocker reinforcement beam 1 is formed from ultra-high-strength steel material through a roll forming process. For example, the rocker outer panel 3 is roll-formed from 1.5GPa steel, the rocker inner panel 2 is hot-press formed from 2GPa steel, and the rocker reinforcement beam 1 is roll-formed from 1.7GPa steel.

[0035] referring to the accompanying draw Figure 2 and Figure 6 , the rocker reinforcement beam 1 includes an upper layer cavity 11 and a lower layer cavity 12. The upper layer cavity 11 is located on the side of the lower layer cavity 12 facing away from the bracket main body 43. The upper layer cavity 11 and the lower layer cavity 12 extend along the length direction of the rocker reinforcement beam 1, such that the upper layer cavity 11 and the lower layer cavity 12 sequentially bear the lateral collision force of the rocker reinforcement beam 1, forming a gradient force bearing system, avoiding concentrated load bearing of the cavities of the rocker reinforcement beam 1, and greatly improving the overall bending resistance and compression resistance of the rocker reinforcement beam 1.

[0036] referring to the accompanying draw Figure 6 , in the direction from the upper layer cavity 11 to the lower layer cavity 12, the dimension of the cross-sectional shape of the upper layer cavity 11 in the height direction of the rocker reinforcement beam 1 gradually increases to form a trapezoidal section, which can disperse the load and improve the crushing stability of the upper layer cavity 11. The lower layer cavity 12 includes at least two sub-cavities 121, and the at least two sub-cavities 121 are arranged at intervals in the height direction of the rocker reinforcement beam 1, so that the plurality of sub-cavities 121 can jointly disperse the load borne by the lower layer cavity 12, and improve the crushing stability of the lower layer cavity 12.

[0037] Specifically, referring to the accompanying draw Figure 6 , the cross section of the rocker reinforcement beam 1 is in a shape of the Chinese character "pin", and the lower layer cavity 12 includes two sub-cavities 121 distributed in the height direction of the rocker reinforcement beam 1.

[0038] referring to the accompanying draw Figure 4 and Figure 5 , the rocker inner panel 2 includes a rocker inner panel front section 25, an inner panel main body 24, a rocker rear connecting plate 26 and a rocker inner panel rear section 27. The rocker inner panel front section 25 is connected to the front end of the inner panel main body 24 in the length direction of the rocker reinforcement beam 1, and the rocker inner panel rear section 27 is connected to the rear end of the inner panel main body 24 in the length direction of the rocker reinforcement beam 1 through the rocker rear connecting plate 26.

[0039] The inner panel body 24 has a groove 23 with an opening facing the outer sill plate 3. The bracket body 43 is located in the groove 23. A second support cavity is provided on the side of the front section 25 of the inner sill plate facing the outer sill plate 3. A third support cavity is provided on the side of the rear connecting plate 26 of the sill facing the outer sill plate 3. The sill reinforcing beam 1 is inserted and fixed in the second support cavity, the first support cavity 44 and the third support cavity.

[0040] Because the molding processes of the front section 25 and the rear section 27 of the inner sill panel are different, it is difficult to mold the inner sill panel 2 as a whole. Therefore, the front section 25, the inner sill panel 2, and the rear section 27 of the inner sill panel are designed separately, and each part is processed and formed first before being connected and assembled, in order to simplify the processing process of the inner sill panel 2.

[0041] The rear connecting plate 26 of the sill connects the inner sill plate 2 and the rear section 27 of the inner sill plate, and forms a third support cavity to cooperate with the front section 25 of the inner sill plate and the sill bracket 4 to support the sill reinforcement beam 1, thereby further improving the stability of the sill reinforcement beam 1.

[0042] Specifically, the front section 25 of the inner sill plate is spot-welded to the front end of the inner sill plate 2, and the rear connecting plate 26 of the sill plate is spot-welded to the inner sill plate 2 and the rear section 27 of the inner sill plate.

[0043] Reference Appendix Figure 5 Multiple sill brackets 4 are provided, and these brackets 4 are spaced apart along the length of the sill reinforcing beam 1. This ensures the connection strength between the sill reinforcing beam 1 and the inner sill plate 2 and the outer sill plate 3, while reducing the overall weight of the sill brackets 4. This effectively reduces the weight of the sill, contributing to its lightweight design and lowering material costs. Moreover, compared to manufacturing a single large-sized sill bracket 4, multiple small-sized sill brackets 4 are easier to manufacture, reducing production difficulty.

[0044] Reference Appendix Figures 3 to 5 The main body 43 of the support frame serves as a support plate. The inner sill plate 2 has a groove 23 with its opening facing the outer sill plate 3. The support plate is vertically fixed in the groove 23, abutting against the inner wall of the groove 23. The inner sill plate 2 restricts the movement of the sill support 4, improving the overall integrity of the sill support 4 and the inner sill plate 2. The side of the support plate extending out of the groove 23 connects to the first connecting end 41 and the second connecting end 42. The sill support 4 has a simple structure, is easy to manufacture, and reduces processing costs. This groove has the same structure as the groove in the main body 24 of the inner plate.

[0045] Preferably, the outer sill plate 3 and the inner sill plate 2 adopt a "C"-shaped plate beam structure. The inner sill plate 2 has an opening facing the outer sill plate 3, and the outer sill plate 3 has an opening facing the inner sill plate 2, so that the inner sill plate 2 and the outer sill plate 3 form a cavity.

[0046] Reference Appendix Figure 2 , the upper side of the inner sill panel 2 is provided with a vertical first upper flange 21, the lower side of the inner sill panel 2 is provided with a vertical first lower flange 22, the upper side of the outer sill panel 3 is provided with a vertical second upper flange 31, and the lower side of the outer sill panel 3 is provided with a vertical second lower flange 32.

[0047] The first connecting end 41 is sandwiched between the first upper flange 21 and the second upper flange 31, such that the upper connecting position of the sill bracket 4 forms a three-layer structure, so as to improve the rigidity of the upper connecting position of the sill bracket 4. The second connecting plate is sandwiched between the first lower flange 22 and the second lower flange 32, such that the lower connecting position of the sill bracket 4 forms a three-layer structure, so as to improve the rigidity of the lower connecting position of the sill bracket 4.

[0048] Specifically, the first connecting end 41 is welded between the first upper flange 21 and the second upper flange 31, and the second connecting end 42 is welded between the first lower flange 22 and the second lower flange 32. Of course, in other embodiments, the first connecting end 41 may connect the first upper flange 21 and the second upper flange 31 by bolts, and the second connecting end 42 may connect the first lower flange 22 and the second lower flange 32 by bolts.

[0049] Refer to the attached Figure 2 , the surface of the sill reinforcement beam 1 facing the inner sill panel 2 is welded to the bottom wall of the first support cavity 44, which simplifies the production process. Of course, in other embodiments, the sill reinforcement beam 1 may be connected to the bottom wall of the first support cavity 44 by bolts.

[0050] Second Embodiment The cross-sectional shape of the sill reinforcement beam 1 may be a shape of Chinese character "tian". Of course, the sill reinforcement beam 1 may also be a tubular beam with a single cavity, the cross-sectional shape of the cavity may be a polygon such as a rectangle, a hexagon, or a circle, an ellipse, the sill reinforcement beam 1 may also have only a single-layer cavity, and the single-layer cavity includes a plurality of sub-cavities distributed at intervals along the height direction of the sill reinforcement beam 1.

[0051] The cross-sectional shape of the upper-layer cavity 11 may be a rectangle, a circle, etc., and the lower-layer cavity 12 may include only one sub-cavity 121.

[0052] The opening of the first support cavity 44 of the sill bracket 4 faces the inner sill panel 2, the outer sill panel 3 has a notch with an opening facing the inner sill panel 2, the bracket main body 43 of the sill bracket 4 may be located in the notch, and the outer side surface of the bracket main body 43 abuts against and is connected to the groove wall of the notch of the outer sill panel 3.

[0053] The first connecting end 41 of the sill bracket 4 may connect the first upper flange 21 and the second upper flange 31 by means of bolts, rivets, etc., and the second connecting end 42 of the sill bracket 4 may connect the first lower flange 22 and the second lower flange 32 by means of bolts, rivets, etc.

[0054] It should be understood that, apart from the differences mentioned above, the other settings in Embodiment 2 can be the same as those in Embodiment 1.

[0055] On the other hand, this application also provides a vehicle door sill assembly, the structure of which is the same as that of the vehicle door sill assembly in any of the above embodiments, and will not be described again here.

[0056] On the other hand, this application also provides a vehicle including the front side panel assembly of any of the above embodiments.

[0057] Specifically, referring to the attached diagram, the vehicle also includes a front floor 300, a front floor front crossbeam 400, a front floor rear crossbeam 500, and a rear seat crossbeam 600. The front floor 300 is connected to the inner side of the sill inner panel 2 in the Y direction. The front floor front crossbeam 400 and the front floor rear crossbeam 500 are connected to the top surface of the front floor 300, and the rear seat crossbeam 600 is connected to the rear side of the front floor 300. In a side impact scenario, the collision force is transmitted along the path of the outer sill panel 3 - sill reinforcement beam 1 - sill bracket 4 - sill inner panel 2 - floor crossbeam.

[0058] In this application, "multiple" refers to two or more.

[0059] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0061] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0062] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0063] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vehicle door sill assembly, characterized in that, The device includes an inner sill plate, an outer sill plate, a sill reinforcement beam, and at least one sill bracket. The inner sill plate is connected to the inner side of the outer sill plate to form a cavity between the two. The sill bracket includes a first connecting end, a bracket body, and a second connecting end connected in sequence. The bracket body and the sill reinforcement beam are located in the cavity. The bracket body is provided with a first support cavity, and the sill reinforcement beam is inserted and fixed to the first support cavity along its length. The first connecting end extends upward to the space between the inner sill plate and the outer sill plate, and the second connecting end extends downward to the space between the inner sill plate and the outer sill plate. Both the first connecting end and the second connecting end are connected to the inner sill plate and the outer sill plate.

2. The vehicle door sill assembly according to claim 1, characterized in that, The sill reinforcement beam includes an upper cavity and a lower cavity. The upper cavity is located on the side of the lower cavity opposite to the support body. The upper cavity and the lower cavity extend along the length of the sill reinforcement beam.

3. The vehicle door sill assembly according to claim 2, characterized in that, In the direction of the upper cavity near the lower cavity, the cross-sectional shape of the upper cavity gradually increases in the height direction of the sill reinforcement beam; the lower cavity includes at least two sub-cavities, and the at least two sub-cavities are spaced apart along the height direction of the sill reinforcement beam.

4. The vehicle door sill assembly according to claim 1, characterized in that, The sill inner panel includes a front section of the sill inner panel, an inner panel body, a sill rear connecting plate, and a sill inner panel rear section. The front section of the sill inner panel is connected to the front end of the inner panel body along the length direction of the sill reinforcing beam, and the rear section of the sill inner panel is connected to the rear end of the inner panel body along the length direction of the sill reinforcing beam through the sill rear connecting plate. The inner panel body has a groove with an opening facing the outer sill plate. The bracket body is located in the groove. A second support cavity is provided on the front section of the inner sill plate facing the outer sill plate. A third support cavity is provided on the rear connecting plate of the sill facing the outer sill plate. The sill reinforcement beam is inserted and fixed in the second support cavity, the first support cavity, and the third support cavity.

5. The vehicle sill assembly according to claim 1, characterized in that, Multiple threshold supports are provided, and the multiple threshold supports are distributed at intervals along the length direction of the threshold reinforcing beam.

6. The vehicle sill assembly according to claim 5, characterized in that, The main body of the bracket is a support plate. The inner sill plate has a groove with an opening facing the outer sill plate. The support plate is vertically fixed in the groove. The support plate abuts against the inner wall of the groove. The side of the support plate extending out of the groove is connected to the first connecting end and the second connecting end.

7. The vehicle door sill assembly according to claim 1, characterized in that, The upper side of the inner threshold panel is provided with a vertical first upward flange, the lower side of the inner threshold panel is provided with a vertical first downward flange, the upper side of the outer threshold panel is provided with a vertical second upward flange, and the lower side of the outer threshold panel is provided with a vertical second downward flange. The first connecting end is sandwiched between the first upper flange and the second upper flange, and the second connecting plate is sandwiched between the first lower flange and the second lower flange.

8. A front side panel assembly for a vehicle body, characterized in that, The device includes an inner A-pillar panel, an outer side panel, and a vehicle sill assembly as described in any one of claims 1 to 7, wherein the front end of the inner sill panel is connected to the bottom end of the inner A-pillar panel, and the outer side panel is connected to the outer side of the inner sill panel.

9. The front side panel assembly of the vehicle body according to claim 8, characterized in that, The sill outer panel is integrally formed on the bottom side of the side panel outer panel.

10. A vehicle, characterized in that, Includes the front side panel assembly of the vehicle body as described in claim 8 or 9.

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