Sill step, sill step assembly and vehicle for an electric commercial vehicle

Abstract

The application provides a rocker step, a rocker step assembly and a vehicle for an electric commercial vehicle. The rocker step for the electric commercial vehicle comprises a step body, a lower longitudinal beam connecting portion arranged on the inner side of the left-right direction of the step body, an outer rocker connecting portion arranged on the outer side of the left-right direction of the step body, an extruded rocker connecting portion arranged on the front end of the step body, and a battery pack mounting seat hung on the lower side surface of the step body. The step body, the lower longitudinal beam connecting portion, the outer rocker connecting portion, the extruded rocker connecting portion and the battery pack mounting seat are integrally formed into an aluminum casting structure. The rocker step has a simple structure and guarantees the installation space requirement of the battery pack.

Description

Door sill plates, door sill plate assemblies, and vehicles for electric commercial vehicles Technical Field

[0001] This invention belongs to the field of automotive manufacturing engineering technology, specifically relating to a door sill plate, door sill plate assembly, and vehicle for electric commercial vehicles. Background Technology

[0002] Currently, the rear step of the sliding door of a traditional fuel-powered MPV typically includes an inner sill plate, multiple sill reinforcement brackets, multiple brackets connecting the inner sill plate and the longitudinal beam, a sliding door guide rail mounting plate, and multiple reinforcement brackets. The structure is complex, the manufacturing process is cumbersome, and it occupies a large amount of layout space.

[0003] With the advent of the electric vehicle era, consumer demand for electric MPVs is increasing. The rear sill plate structure of traditional fuel-powered MPVs cannot meet the requirements for the installation of large batteries. Summary of the Invention

[0004] To address some or all of the aforementioned technical problems in the prior art, this invention proposes a door sill plate, a door sill plate assembly, and a vehicle for electric commercial vehicles. The door sill plate of this design for electric commercial vehicles adopts a cast aluminum structure and integrates a battery pack mounting bracket, ensuring space requirements for large battery packs. Furthermore, the door sill plate has a simple structure, facilitating lightweight vehicle design.

[0005] According to a first aspect of the present invention, a door sill plate for an electric commercial vehicle is provided, comprising:

[0006] pedal body,

[0007] The lower longitudinal beam connection is located on the inner side of the pedal body in the left and right directions.

[0008] The outer sill connection portion is located on the left and right outer sides of the pedal body.

[0009] The compression sill connection is located at the front end of the pedal body.

[0010] A battery pack mounting bracket is suspended on the lower side of the pedal body.

[0011] The pedal body, the lower longitudinal beam connecting part, the outer sill connecting part, the extrusion sill connecting part, and the battery pack mounting base are integrally formed into a cast aluminum structure.

[0012] In one embodiment, a sliding door guide rail mounting groove extending from front to back is provided on the pedal body. The lower longitudinal beam connecting part is constructed as an angled bending member provided on the inner side of the pedal body in the left and right directions, and includes a first lower longitudinal beam connecting plate extending upward from the upper side of the pedal body and a second lower longitudinal beam connecting plate extending laterally. A first rib is provided between the first lower longitudinal beam connecting plate and the pedal body, and the outer side of the first rib in the left and right directions is spaced apart from the sliding door guide rail mounting groove.

[0013] In one embodiment, a plurality of first stiffeners are spaced apart in the front-back direction, and the height of each first stiffener gradually decreases in the direction from the inside to the outside.

[0014] In one embodiment, the outer sill connection includes:

[0015] A first outer sill connecting beam is disposed on the left and right outer sides of the pedal body, extending downward from the lower side of the pedal body.

[0016] A second outer sill connecting beam extending downwards is provided on the lower side of the pedal body, and the second outer sill connecting beam and the first outer sill connecting beam are spaced apart in the left-right direction.

[0017] In one embodiment, a second reinforcing rib extending laterally is provided between the second outer sill connecting beam and the first outer sill connecting beam, and is connected to the lower side of the pedal body; a third reinforcing rib extending laterally is provided between the inner side of the second outer sill connecting beam in the left and right directions and the lower side of the pedal body; and a fourth reinforcing rib extending forward and backward is provided on the lower side of the pedal body, and is connected to the third reinforcing rib.

[0018] In one embodiment, the battery pack mounting base is disposed at the intersection of the third reinforcing rib and the fourth reinforcing rib, and a fifth reinforcing rib extending obliquely is provided between the outer wall of the battery pack mounting base and the second outer sill connecting beam.

[0019] In one embodiment, the extrusion threshold connection includes:

[0020] The compression sill extending laterally at the front end of the pedal body is connected to the vertical plate.

[0021] The extrusion sill connecting horizontal plate abuts against the extrusion sill connecting vertical plate.

[0022] The extrusion threshold connecting vertical plate extends in the front-to-back direction and abuts against both the vertical plate and the horizontal plate of the extrusion threshold.

[0023] In one embodiment, a sliding door lower guide rail mounting hole is provided on the main body of the pedal, located inside the left-right direction of the sliding door guide rail mounting groove, and a nut is press-fitted at the sliding door lower guide rail mounting hole.

[0024] According to a second aspect of the present invention, a door sill plate assembly is provided, comprising:

[0025] The aforementioned door sill plate,

[0026] The extruded aluminum sill is connected to the extruded sill connection portion.

[0027] The outer plate of the lower longitudinal beam connected to the lower longitudinal beam connection part,

[0028] The lower longitudinal beam is located on the left and right inner sides of the outer plate of the lower longitudinal beam.

[0029] The outer sill reinforcement plate connected to the outer sill connection part,

[0030] The rear sealing flange bracket is installed between the outer sill reinforcement plate and the sill pedal.

[0031] According to a third aspect of the invention, a vehicle is provided, including the aforementioned door sill pedal assembly.

[0032] Compared with the prior art, the advantages of the present invention are as follows: the pedal body not only integrates the lower longitudinal beam connecting part, the outer sill connecting part, and the extrusion sill connecting part, simplifying the structure of the pedal assembly and its connection with other components; the pedal body also integrates a battery pack mounting bracket to provide a battery pack mounting position, thereby ensuring the battery pack's installation space requirements, especially enabling the installation of large battery packs, which helps to achieve a long driving range; the pedal body and other components are integral cast aluminum parts, which have a relatively simple manufacturing process and make it easier to achieve lightweight vehicle design. Attached Figure Description

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which:

[0034] Figure 1 shows a three-dimensional view of a door sill plate for an electric commercial vehicle according to an embodiment of this application;

[0035] Figure 2 shows another three-dimensional view of a door sill plate for an electric commercial vehicle according to an embodiment of this application;

[0036] Figure 3 shows an exploded view of the connection between the door sill plate and surrounding parts for an electric commercial vehicle according to an embodiment of this application;

[0037] Figure 4 shows a structural diagram of the connection between the door sill plate and surrounding parts for an electric commercial vehicle according to an embodiment of this application;

[0038] Figure 5 is a cross-sectional view of section AA from Figure 4;

[0039] Figure 6 is a cross-sectional view of BB from Figure 4.

[0040] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale. Detailed Implementation

[0041] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0042] Figures 1 and 2 of this application provide a door sill plate for an electric commercial vehicle. As shown in Figures 1 and 2, the door sill plate 1 for an electric commercial vehicle includes a plate body 11, a lower longitudinal beam connecting portion 12, an outer door sill connecting portion 13, an extruded door sill connecting portion 14, and a battery pack mounting base 15. The plate body 11 is generally square-shaped and is installed on the sliding door side of the electric commercial vehicle, extending in the front-rear direction. As shown in Figures 3 to 6, the lower longitudinal beam connecting portion 12 is located on the inner side of the plate body 11 in the left-right direction, connecting to the lower longitudinal beam 2. The outer door sill connecting portion 13 is located on the outer side of the plate body 11 in the left-right direction, connecting to the outer door sill reinforcing plate 3. The extruded door sill connecting portion 14 is located at the front end of the plate body 11, connecting to the extruded aluminum door sill 4. The battery pack mounting base 15 is suspended on the lower side of the plate body 11, for suspending the battery pack (not shown in the figures). According to this application, the pedal body 11, the lower longitudinal beam connecting part 12, the outer sill connecting part 13, the extrusion sill connecting part 14, and the battery pack mounting base 15 are integrally formed into a cast aluminum structure.

[0043] Therefore, the pedal body 11 not only integrates the lower longitudinal beam connecting part 12, the outer sill connecting part 13, and the extrusion sill connecting part 14, simplifying the structure of the pedal assembly and its connection with other components, but also integrates a battery pack mounting bracket 15 to provide a battery pack mounting position, thereby ensuring the installation space requirements of the battery pack. This is especially helpful for installing large battery packs, thus meeting the requirements for long driving range. The pedal body 11 and other components are integral cast aluminum parts, which have a relatively simple manufacturing process and make it easier to achieve lightweight vehicle design.

[0044] In one embodiment, a sliding door guide rail mounting groove 111 is provided on the pedal body 11. This sliding door guide rail mounting groove 111 extends generally from front to back; however, it should be noted that the extension direction of the sliding door guide rail mounting groove 111 is oblique. Simultaneously, a sliding door lower guide rail mounting hole 112 is provided on the pedal body 11. This sliding door lower guide rail mounting hole 112 is located inside the sliding door guide rail mounting groove 111 in the left-right direction, and there are multiple holes, spaced apart along the extension direction of the sliding door guide rail mounting groove 111. Therefore, the threshold pedal 1 of this application provides reserved space for the sliding door's actuator, etc., ensuring space layout requirements. For subsequent installation of the sliding door guide rail, nuts 113 are press-fitted into the sliding door lower guide rail mounting holes 112. These nuts 113 are distributed on the lower side of the pedal body 11.

[0045] The lower longitudinal beam connecting part 12 is constructed as an angled bent piece located on the inner side of the pedal body 11 in the left and right directions. As shown in Figure 6, the lower longitudinal beam connecting part 12 includes a first lower longitudinal beam connecting plate 121 and a second lower longitudinal beam connecting plate 122. The first lower longitudinal beam connecting plate 121 extends upward and protrudes from the upper side of the pedal body 11. The second lower longitudinal beam connecting plate 122 extends laterally. Additionally, a first rib 114 is provided between the first lower longitudinal beam connecting plate 121 and the pedal body 11. The outer side of the first rib 114 in the left and right directions is spaced apart from the sliding door guide rail mounting groove 111, meaning the first rib 114 does not extend into the sliding door guide rail mounting groove 111. During use, a lower longitudinal beam outer plate 5 is provided at the lower longitudinal beam connecting part 12. The lower longitudinal beam outer plate 5 has a Z-shaped cross-section in the left-right direction, and its lower two edges are connected to the first lower longitudinal beam connecting plate 121 and the second lower longitudinal beam connecting plate 122, respectively, for example, via an SPR (Surface Reinforced Plastic) connection to improve connection strength and optimize vehicle sealing. A lower longitudinal beam 2 is provided on the inner left-right side of the lower longitudinal beam outer plate 5, meaning the lower longitudinal beam 2 rests on the edges of the lower longitudinal beam outer plate 5 that match the first and second lower longitudinal beam connecting plates 121 and 122. Understandably, the lower longitudinal beam connecting part 12 connects to the lower longitudinal beam 2 via the lower longitudinal beam outer plate 5. The laterally extending edge at the very top of the lower longitudinal beam outer plate 5 is used for welding to the front floor of the vehicle.

[0046] There are multiple first stiffeners 114, which are spaced apart in the front-to-back direction. Preferably, the height of each first stiffener 114 gradually decreases from the inside to the outside in the left-to-right direction. By setting the first stiffeners 114, the structural strength and rigidity of the sill plate 1 can be improved, especially the installation strength between the sill plate 1 and the lower longitudinal beam outer plate 5, and the force transmission in the left-to-right direction can be optimized.

[0047] The outer sill connecting part 13 includes a first outer sill connecting beam 131 and a second outer sill connecting beam 132. The first outer sill connecting beam 131 is located on the left-right outer surface of the pedal body 11, extending downwards and protruding from the lower side of the pedal body 11. The second outer sill connecting beam 132 is located on the lower side of the pedal body 11 and extends downwards. The second outer sill connecting beam 132 and the first outer sill connecting beam 131 are spaced apart in the left-right direction. Preferably, to accommodate different vehicle sealing surface structures for the sill pedal 1 and to consider the manufacturing feasibility of the sill pedal 1, a sealing flange bracket 6 is provided on the first outer sill connecting beam 131 and the second outer sill connecting beam 132, as shown in Figure 6. The structure of the sealing flange bracket 6, as shown, includes a polygonal bending structure, with two sides respectively abutting against the first outer sill connecting beam 131 and the second outer sill connecting beam 132, for example, by SPR fixing. An outer sill reinforcing plate 3 is provided on the left-right outer side of the sealing flange bracket 6. Meanwhile, side panels 7 are provided on the left and right outer sides of the outer sill reinforcement plate 3. The structures of the outer sill reinforcement plate 3 and the side panels 7 are shown in the figure, both including a bending structure. The sealing flange bracket 6, the outer sill reinforcement plate 3, and the side panels 7 are connected at their vertically extending ends to form a sealing section. A first cavity 8 is formed between the sealing flange bracket 6 and the outer sill reinforcement plate 3 to improve load-bearing capacity.

[0048] As shown in Figure 2, a second reinforcing rib 115 extending laterally and connecting to the lower side of the pedal body 11 is provided between the second outer sill connecting beam 132 and the first outer sill connecting beam 131. A third reinforcing rib 116 extending laterally is provided between the left and right inner sides of the second outer sill connecting beam 132 and the lower side of the pedal body 11. A fourth reinforcing rib 117 extending forward and backward and connecting to the third reinforcing rib 116 is provided protrudingly on the lower side of the pedal body 11. Thus, a generally grid-like reinforcing rib is provided on the lower side of the pedal body 11, which effectively improves the strength of the sill pedal 1 and contributes to lightweight design. The height of the third reinforcing rib 116 and the fourth reinforcing rib 117 gradually decreases from the outer side to the inner side in the left and right direction. The battery pack mounting base 15 is located at the intersection of the third reinforcing rib 116 and the fourth reinforcing rib 117. A fifth reinforcing rib 118 extending obliquely is provided between the outer wall of the battery pack mounting base 15 and the second outer sill connecting beam 132. There are multiple battery pack mounting bases 15, which are spaced apart in the front-to-back direction. This arrangement effectively ensures the strength of the mounting points of the battery pack mounting bases 15, thereby ensuring the stable hoisting of the battery pack.

[0049] The battery pack mounting base 15 is provided with a connection hole 151 for suspending the battery pack. The connection hole 151 communicates with a process hole 152 formed on the lower side of the pedal body 11.

[0050] The extruded sill connecting part 14 includes an extruded sill connecting vertical plate 141, an extruded sill connecting horizontal plate 142, and an extruded sill connecting vertical plate 143. The extruded sill connecting vertical plate 141 is located at the front end of the pedal body 11 and extends laterally. The extruded sill connecting horizontal plate 142 abuts against the extruded sill connecting vertical plate 141. The extruded sill connecting vertical plate 141 and the extruded sill connecting horizontal plate 142 abut against both, and extends in the front-rear direction. During use, as shown in Figure 5, the extruded sill connecting horizontal plate 142 and extruded sill connecting vertical plate 143 are semi-enclosed on the extruded aluminum sill 4 and connected via an FDS (Flat Die Surface) connection.

[0051] This application also relates to a door sill plate assembly. This door sill plate assembly includes the aforementioned door sill plate 1, extruded aluminum door sill 4, lower longitudinal beam outer plate 5, lower longitudinal beam 2, outer door sill reinforcement plate 3, and rear sealing flange bracket 6. Furthermore, in the specific connection process, the left and right inward sides of the extruded aluminum door sill 4 are connected to the first lower crossbeam side reinforcement bracket 8, the second lower crossbeam side reinforcement bracket 9, the second.5 side reinforcement bracket 10, and the third lower crossbeam side reinforcement bracket 101, for example, via an FDS connection. The left and right inward sides of the first lower crossbeam side reinforcement bracket 8, the second lower crossbeam side reinforcement bracket 9, the second.5 side reinforcement bracket 10, and the third lower crossbeam side reinforcement bracket 101 are connected to the lower longitudinal beam 2, for example, via spot welding. This connection method effectively optimizes the side impact force transmission path. Additionally, as shown in Figure 5, the extruded door sill connecting plate 143 extends forward between the third lower crossbeam side reinforcement bracket 101 and the extruded aluminum door sill 4 to achieve a stable connection structure. Meanwhile, the rear side of the reinforcing bracket 101 on the third lower crossbeam side is also connected to the outer plate 5 of the lower longitudinal beam, for example, by electric welding. That is to say, the left and right outer sides of the reinforcing bracket 101 on the third lower crossbeam side are connected to the extruded aluminum sill 4 and sill plate 1, while the inner side is connected to the outer plate 5 of the lower longitudinal beam and the lower longitudinal beam 2.

[0052] The door sill plate 1 is manufactured by melting aluminum ingots, die-casting them using a 3000-4000T die-casting machine, followed by edge trimming, shaping, grinding, machining, riveting to standard parts, cleaning, and passivation. Based on mold flow analysis, the fillet radius, wall thickness, and draft angle of door sill plate 1 are optimized to improve filling difficulties, air entrapment, shrinkage cavities, and deformation issues, ensuring manufacturing feasibility. During manufacturing, batch-by-batch aluminum material composition testing, mechanical property, hardness, and metallographic testing of aluminum castings, as well as X-ray flaw detection, are required to ensure product quality.

[0053] The extruded aluminum sill 4 is manufactured using an aluminum extrusion process and is connected to the sill plate 1. The rear sealing flange bracket 6, the first lower crossbeam side reinforcement bracket 8, the second lower crossbeam side reinforcement bracket 9, the second.5 side reinforcement bracket 10, the third lower crossbeam side reinforcement bracket 101, and the lower longitudinal beam outer plate 5 are all stamped steel parts. These parts are then connected to the extruded aluminum sill 4 and the sill plate 1 at the assembly station to form the sill plate assembly. Adhesive is applied to the joints between the steel and aluminum parts to prevent electrochemical corrosion between the steel and aluminum. This application also relates to vehicles, including the aforementioned sill plate assembly.

[0054] The door sill plate 1 of this application adopts a one-piece cast aluminum design. Sufficient space is reserved on the plate body 11 for the battery pack and sliding door actuator, while meeting the strength requirements for battery pack installation and sliding door guide rail installation. The door sill plate 1 design significantly reduces the number of parts, saves on the number of molds and welding tooling, reduces process complexity, lowers costs, achieves a lightweight effect, and reduces the accumulation of parts and welding errors, improving the accuracy and consistency of installation points. The door sill plate 1, together with the extruded aluminum door sill 4, side reinforcing brackets 8, 9, 10, 101, and lower longitudinal beam 2, forms a stable and effective load-bearing frame structure, meeting safety performance requirements such as side impact.

[0055] The directional terms used in this application, such as up, down, left, right, front, and back, are all based on the vehicle's own position.

[0056] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the invention, and all changes and / or modifications made according to embodiments of the invention should be covered within the protection scope of the invention.

Claims

1. A door sill plate for an electric commercial vehicle, characterized in that, The device includes a pedal body, a lower longitudinal beam connecting portion disposed on the inner side of the pedal body in the left-right direction, an outer sill connecting portion disposed on the outer side of the pedal body in the left-right direction, an extrusion sill connecting portion disposed at the front end of the pedal body, and a battery pack mounting seat suspended on the lower side of the pedal body. The pedal body, the lower longitudinal beam connecting portion, the outer sill connecting portion, the extrusion sill connecting portion, and the battery pack mounting seat are integrally formed cast aluminum structures. The outer sill connecting portion includes: a first outer sill connecting beam extending downward from the lower side of the pedal body on the outer side in the left-right direction, and a second outer sill connecting beam extending downward from the lower side of the pedal body. The second outer sill connecting beam and the first outer sill connecting beam are spaced apart in the left-right direction. A second reinforcing rib extending left and right is provided between the second outer sill connecting beam and the first outer sill connecting beam and connected to the lower side of the pedal body. A third reinforcing rib extending left and right is provided between the inner left and right side of the second outer sill connecting beam and the lower side of the pedal body. A fourth reinforcing rib extending forward and backward is provided on the lower side of the pedal body and connected to the third reinforcing rib. The battery pack mounting seat is located at the intersection of the third reinforcing rib and the fourth reinforcing rib. A fifth reinforcing rib extending obliquely is provided between the outer wall of the battery pack mounting seat and the second outer sill connecting beam.

2. The door sill plate for electric commercial vehicles according to claim 1, characterized in that, A sliding door guide rail mounting groove extending from front to back is provided on the pedal body. The lower longitudinal beam connecting part is constructed as an angled bending member provided on the inner side of the pedal body in the left and right directions, and includes a first lower longitudinal beam connecting plate extending upward from the upper side of the pedal body and a second lower longitudinal beam connecting plate extending laterally. A first rib is provided between the first lower longitudinal beam connecting plate and the pedal body, and the outer side of the first rib in the left and right directions is spaced apart from the sliding door guide rail mounting groove.

3. The door sill plate for electric commercial vehicles according to claim 2, characterized in that, It includes multiple first stiffeners spaced apart in the front-to-back direction, and the height of each first stiffener gradually decreases from the inside to the outside.

4. The door sill plate for electric commercial vehicles according to claim 1, characterized in that, The pressure threshold connection includes: a pressure threshold connecting vertical plate extending in the left and right directions at the front end of the pedal body, a pressure threshold connecting horizontal plate abutting against the pressure threshold connecting vertical plate, and a pressure threshold connecting vertical plate extending in the front and back directions abutting against both the pressure threshold connecting vertical plate and the pressure threshold connecting horizontal plate.

5. The door sill plate for electric commercial vehicles according to claim 2, characterized in that, A sliding door lower guide rail mounting hole is provided on the main body of the pedal, located on the inner side of the sliding door guide rail mounting groove in the left and right direction, and a nut is press-fitted at the sliding door lower guide rail mounting hole.

6. A door sill pedal assembly, characterized in that, include: The door sill plate for an electric commercial vehicle according to any one of claims 1 to 5, comprising an extruded aluminum door sill plate connected to the extruded door sill connecting portion, a lower longitudinal beam outer plate connected to the lower longitudinal beam connecting portion, a lower longitudinal beam disposed on the left and right inner sides of the lower longitudinal beam outer plate, an outer door sill reinforcing plate connected to the outer door sill connecting portion, and a rear sealing flange bracket disposed between the outer door sill reinforcing plate and the door sill plate.

7. A vehicle, characterized in that, Includes the door sill plate assembly as described in claim 6.

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