An electric pedal structure, a threshold and a vehicle

Abstract

This invention discloses an electric pedal structure, a door sill, and a vehicle, including an inner door sill plate, an outer door sill plate, at least one movable limiting support arm, and a forward and reverse motor. The lower end of the outer door sill plate is pivotally connected to a corresponding position on the outer surface of the inner door sill plate. The inner surface of the outer door sill plate can be interlocked and fixed with the corresponding position of the outer surface of the inner door sill plate. At least one movable limiting support arm is movably connected to the corresponding position of the inner surface of the outer door sill plate and the outer surface of the inner door sill plate. At least one movable limiting support arm can be accommodated within the space formed by the interlocking outer door sill plate and the inner door sill plate. The forward and reverse motor is fixed to one end of the inner door sill plate, and the rotation shaft of the forward and reverse motor is drivenly connected to the pivot of the outer door sill plate. This invention can realize the function of existing electric pedals and can also be restored to a door sill decoration when retracted. It is both aesthetically pleasing and practical, and also reduces the manufacturing cost of the vehicle, while reducing the overall vehicle weight and wind resistance.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and more particularly to an electric pedal structure, a door sill, and an automobile. Background Technology

[0002] Currently, the door sills on cars on the market are just ordinary plastic decorative parts, serving only a decorative purpose.

[0003] Some off-road vehicles have fixed steps protruding outwards at the door sill to facilitate getting in and out of the vehicle. Many other models also feature electric running boards to improve passenger convenience. These electric running boards are mounted on the vehicle's chassis sheet metal below the door sill. When the door is opened, the electric running board automatically extends from the chassis for passengers to step on; when the door is closed, the electric running board automatically retracts to the chassis. However, these electric running boards are useless when the door is closed, increasing both the vehicle's weight and wind resistance. Summary of the Invention

[0004] To address the aforementioned issues, the integrated electric pedal sill of this invention not only fulfills the functions of existing electric pedals but also reverts to a decorative sill piece when retracted. This design is both aesthetically pleasing and practical, while also reducing vehicle manufacturing costs, overall vehicle weight, and wind resistance.

[0005] This invention proposes an electric pedal structure, including an inner sill plate, an outer sill plate, at least one movable limiting support arm, and a forward and reverse motor;

[0006] The lower end of the outer sill plate is pivotally connected to the corresponding position on the outer surface of the inner sill plate. The inner surface of the outer sill plate can be interlocked and fixed with the corresponding position of the outer surface of the inner sill plate. At least one movable limiting support arm is movably connected to the corresponding position on the inner surface of the outer sill plate and the outer surface of the inner sill plate. At least one movable limiting support arm can be accommodated in the space formed by the interlocked outer sill plate and the inner sill plate. The movable limiting support arm plays a rotation limiting role on the outer sill plate, limiting the opening angle of the outer sill plate to horizontal, and at the same time plays a supporting role on the outer sill plate to prevent the user from stepping on the outer sill plate, causing the outer sill plate to deform due to excessive load.

[0007] The forward and reverse motor is fixed to one end of the inner sill plate, and the rotating shaft of the forward and reverse motor is connected to the pivot of the outer sill plate to control the rotation and opening and closing of the outer sill plate, thereby realizing the function of extending and retracting the outer sill plate.

[0008] The movable limiting support arm is a hinge structure, including a first hinge arm and a second hinge arm, which are rotatably connected. The free end of the first hinge arm is rotatably connected to the outer surface of the inner sill plate, and the free end of the second hinge arm is rotatably connected to the corresponding position on the inner surface of the outer sill plate. When the outer sill plate rotates back, the connecting end between the first and second hinge arms retracts, and the first and second hinge arms gradually overlap. The first hinge arm rotates relative to the inner sill plate, and the connecting end between the first and second hinge arms gradually adheres to the outer surface of the inner sill plate. The second hinge arm rotates relative to the long receiving groove, and the connecting end between the second and first hinge arms gradually rotates into the long receiving groove until the overlapping first and second hinge arms are received in the long receiving groove. At this time, the outer sill plate and the inner sill plate contact and engage with each other, completing the conversion of the outer sill plate from a pedal function to a sill decorative panel function.

[0009] The movable limiting support arm is a pneumatic rod structure, including a pneumatic rod body and a pneumatic rod telescopic arm. The pneumatic rod telescopic arm is telescopically sleeved on one end of the pneumatic rod body. The free end of the pneumatic rod body is rotatably connected to the outer surface of the inner sill plate, and the free end of the pneumatic rod telescopic arm is slidably connected to a corresponding position on the inner surface of the outer sill plate. The free end of the pneumatic rod telescopic arm can slide up and down on the inner surface of the outer sill plate. When the outer sill plate rotates and retracts, the pneumatic rod body controls the pneumatic rod telescopic arm to retract. At the same time, the pneumatic rod body rotates relative to the inner sill plate, and the pneumatic rod telescopic arm slides and rotates relative to it in the long receiving groove. The pneumatic rod body and the pneumatic rod telescopic arm gradually come into contact with the outer surface of the inner sill plate until the pneumatic rod body and the retracted pneumatic rod telescopic arm are together housed in the long receiving groove. At this time, the outer sill plate and the inner sill plate contact and engage with each other, completing the conversion of the outer sill plate from a pedal function to a sill decorative panel function.

[0010] The lower ends of the outer door sill plate are pivotally connected to the corresponding positions on the outer surface of the inner door sill plate, and one side of the outer door sill plate is pivotally connected to the corresponding position of the inner door sill plate and the rotating shaft of the forward and reverse motor.

[0011] The outer sill plate includes a drive shaft. Several drive shaft bushings are respectively provided at the lower end of the inner surface of the outer sill plate. The drive shaft is horizontally rotatably embedded in several drive shaft bushings. Both ends of the drive shaft are rotatably connected to corresponding positions on the outer surface of the inner sill plate. One end of the drive shaft passes through the corresponding position of the inner sill plate and is connected to the rotating shaft of the forward and reverse motor.

[0012] A raised strip is provided on the inner surface of the outer sill plate corresponding to the position of the movable limiting support arm. A long receiving groove is formed at the upper end of the raised strip along its length. The free end of the second hinge arm is rotatably connected to the long receiving groove. The first and second hinge arms, after being rotated and folded, can be accommodated in the long receiving groove. When the outer sill plate rotates back, the connecting end between the first and second hinge arms retracts inward, and the first and second hinge arms gradually overlap. The first hinge arm rotates relative to the inner sill plate, and the second hinge arm rotates relative to the long receiving groove, until the overlapped first and second hinge arms are accommodated in the long receiving groove. At this time, the outer sill plate and the inner sill plate contact and engage with each other, completing the conversion of the outer sill plate from a pedal function to a sill decorative panel function. The long receiving groove can be designed with a clearance notch relative to the rotation axis of the first hinge arm and the inner sill plate. The inner sill plate is provided with a clearance groove corresponding to the position of the long receiving groove. The long receiving groove is accommodated in the clearance groove, and the free end of the first hinge arm is rotatably connected to the clearance groove.

[0013] A raised strip is provided on the inner surface of the outer sill plate corresponding to the position of the movable limiting support arm. A long receiving groove is opened at the upper end of the raised strip along its length. The free end of the pneumatic rod telescopic arm is slidably connected to the inner wall of the long receiving groove. The pneumatic rod body and the pneumatic rod telescopic arm can be accommodated in the long receiving groove. When the outer sill plate rotates and retracts, the pneumatic rod body controls the retraction of the pneumatic rod telescopic arm. At the same time, the pneumatic rod body rotates relative to the inner sill plate. The pneumatic rod telescopic arm slides and rotates relative to the long receiving groove until the pneumatic rod body and the retracted pneumatic rod telescopic arm are accommodated together in the long receiving groove. At this time, the outer sill plate and the inner sill plate contact and engage with each other, completing the conversion of the outer sill plate from a pedal function to a sill decorative panel function. The long receiving groove can be designed with a clearance notch relative to the rotation axis of the pneumatic rod body and the inner sill plate. The inner sill plate is provided with a clearance groove corresponding to the position of the long receiving groove. The long receiving groove is accommodated in the clearance groove, and the free end of the pneumatic rod body is rotatably connected to the clearance groove.

[0014] The inner sill plate has a reinforcing rib extending horizontally backward from its upper end. Riveted joints are located at the left and right ends of the upper part of the inner sill plate. A receiving platform extends horizontally backward from the lower end of the inner sill plate, with threaded protrusions at the upper left and right ends of the receiving platform. A metal sill plate is glued and fixed to the inner surface of the outer sill plate. This metal sill plate has a matching shaped perforated elongated hole at the position of the long receiving groove. The long receiving groove fits onto the perforated elongated hole, with the upper part of the long receiving groove exposed outside the perforated elongated hole. The front end of the outer sill plate has an upward-bending slope, and the corresponding position of the metal sill plate also has an upward-bending slope. The metal sill plate is designed to enhance the overall strength of the outer sill plate and prevent deformation from being stepped on. The slope further enhances the bending strength of the outer sill plate along its length and also prevents passengers from slipping on the front end of the outer sill plate, causing their shoes to slip off and resulting in accidental impacts.

[0015] The present invention also proposes a door sill, including an outer door panel and a side panel, and an electric pedal structure. The riveted connection of the inner door sill is fixed to the upper part of the side panel by rivets, and the threaded protrusion of the inner door sill is fixed to the lower part of the side panel by bolts. The lower end of the outer door panel is adjacent to the upper part of the reinforcing rib of the inner door sill.

[0016] The present invention also proposes an automobile, including a door sill and a body sheet metal, wherein the door sill is disposed on the body sheet metal on both sides.

[0017] Beneficial effects

[0018] The integrated electric pedal sill of this invention can not only realize the function of existing electric pedals, but also revert to a sill decoration when retracted. It is both aesthetically pleasing and practical, and also reduces the manufacturing cost of the vehicle, as well as the overall vehicle weight and wind resistance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the working principle and structure of the present invention. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the exploded structure of the present invention. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the working principle and structure of the present invention. Figure 2 .

[0023] Figure 5 This is a schematic diagram of the exploded structure of the present invention. Figure 2 .

[0024] In the picture:

[0025] 1. Inner door sill panel;

[0026] 11. Avoid the groove;

[0027] 12. Reinforcing ribs;

[0028] 13. Riveted joints;

[0029] 14. Platform undertaking;

[0030] 15. Screw-in protrusion;

[0031] 2. Door sill outer panel;

[0032] 21. Drive shaft;

[0033] 22. Drive shaft bushing;

[0034] 23. Convex strips;

[0035] 231. Long accommodating groove;

[0036] 24. Metal door sill pedal;

[0037] 241. Hollowed-out elongated holes;

[0038] 3. Movable limit support arm;

[0039] 31. First hinge arm;

[0040] 32. Second hinge arm;

[0041] 33. Pneumatic rod body;

[0042] 34. Pneumatic telescopic boom;

[0043] 4. Reverse-rotating motor;

[0044] 5. Door outer panel;

[0045] 6. Side outer panels. Detailed Implementation

[0046] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0047] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0049] Example 1

[0050] See Figure 1 and Figure 3 As shown, an electric pedal structure includes an inner sill plate 1, an outer sill plate 2, a movable limiting support arm 3, and a forward and reverse motor 4.

[0051] The lower end of the outer threshold plate 2 is pivotally connected to the corresponding position on the outer surface of the inner threshold plate 1. The inner surface of the outer threshold plate 2 can be interlocked and fixed with the corresponding position of the outer surface of the inner threshold plate 1. A movable limiting support arm 3 is movably connected to the corresponding position in the middle of the inner surface of the outer threshold plate and the outer surface of the inner threshold plate (not shown in the figure). The movable limiting support arm 3 can be accommodated in the space formed by the interlocked outer threshold plate 2 and the inner threshold plate 1.

[0052] The forward and reverse motor 4 is fixed to one end of the inner door sill plate 1, and the rotating shaft of the forward and reverse motor 4 is connected to the pivot of the outer door sill plate 2.

[0053] The movable limiting support arm 3 is a hinge structure, including a first hinge arm 31 and a second hinge arm 32. The first hinge arm 31 and the second hinge arm 32 are rotatably connected. The free end of the first hinge arm 31 is rotatably connected to the middle of the outer surface of the inner sill plate 1, and the free end of the second hinge arm 32 is rotatably connected to the corresponding position in the middle of the inner surface of the outer sill plate 2.

[0054] The lower ends of the outer door sill plate 2 are rotatably connected to the corresponding positions on the outer surface of the inner door sill plate 1 via protruding pivots (not shown in the figure), and the pivot protruding on one side of the outer door sill plate 2 penetrates the corresponding position of the inner door sill plate and is connected to the rotating shaft of the forward and reverse motor 4.

[0055] A reinforcing rib 12 extends horizontally backward from the upper end of the inner sill plate 1. Riveting connection parts 13 are respectively provided at the left and right ends of the upper part of the inner sill plate 1. A receiving platform 14 extends horizontally backward from the lower end of the inner sill plate 1. Screw-in protrusions 15 are respectively provided at the upper left and right ends of the receiving platform 14. A metal sill plate 24 is matched and glued to the inner surface of the outer sill plate 2. The metal sill plate 24 has a matching hollow elongated hole 241 at the position of the long receiving groove 231. The long receiving groove 231 is sleeved on the hollow elongated hole 241, and the upper part of the long receiving groove 231 is exposed outside the hollow elongated hole 241. The front end of the outer sill plate 2 has an upwardly bent slope surface, and the corresponding position of the metal sill plate 24 also has an upwardly bent slope surface.

[0056] Example 2

[0057] See Figures 1-3 As shown, an electric pedal structure includes an inner sill plate 1, an outer sill plate 2, two movable limiting support arms 3, and a forward and reverse motor 4.

[0058] The lower end of the outer threshold plate 2 is pivotally connected to the corresponding position on the outer surface of the inner threshold plate 1. The inner surface of the outer threshold plate 2 can be interlocked and fixed with the corresponding position of the outer surface of the inner threshold plate 1. The two movable limiting support arms 3 are respectively movably connected to the corresponding positions on the left and right sides of the inner surface of the outer threshold plate and the outer surface of the inner threshold plate. The two movable limiting support arms 3 can be accommodated in the space formed by the interlocked outer threshold plate 2 and the inner threshold plate 1.

[0059] The forward and reverse motor 4 is fixed to one end of the inner door sill plate 1, and the rotating shaft of the forward and reverse motor 4 is connected to the pivot of the outer door sill plate 2.

[0060] The movable limiting support arm 3 is a hinge structure, including a first hinge arm 31 and a second hinge arm 32. The first hinge arm 31 and the second hinge arm 32 are rotatably connected. The free end of the first hinge arm 31 is rotatably connected to the outer surface of the inner sill plate 1, and the free end of the second hinge arm 32 is rotatably connected to the corresponding position on the inner surface of the outer sill plate 2.

[0061] The outer sill plate 2 includes a drive shaft 21. Several drive shaft bushing seats 22 are respectively provided on the lower end of the inner surface of the outer sill plate 2. The drive shaft 21 is horizontally rotatably embedded in several drive shaft bushing seats. The two ends of the drive shaft 21 are respectively rotatably connected to the corresponding positions on the outer surface of the inner sill plate 1. One end of the drive shaft 21 passes through the corresponding position of the inner sill plate and is connected to the rotating shaft of the forward and reverse motor 4 for transmission.

[0062] A protruding strip 23 is provided on the inner surface of the outer sill plate 2 at the position corresponding to the movable limiting support arm 3. A long receiving groove 231 is provided at the upper end of the protruding strip 23 in the length direction. The free end of the second hinge arm 32 is rotatably connected to the long receiving groove 231. The first hinge arm 31 and the second hinge arm 32 can be accommodated in the long receiving groove 231 after being rotated and folded. A clearance groove 11 is provided on the inner sill plate 1 at the position corresponding to the long receiving groove 231. The long receiving groove 231 is accommodated in the clearance groove 11. The free end of the first hinge arm 31 is rotatably connected to the clearance groove 11.

[0063] A reinforcing rib 12 extends horizontally backward from the upper end of the inner sill plate 1. Riveting connection parts 13 are respectively provided at the left and right ends of the upper part of the inner sill plate 1. A receiving platform 14 extends horizontally backward from the lower end of the inner sill plate 1. Screw-in protrusions 15 are respectively provided at the upper left and right ends of the receiving platform 14. A metal sill plate 24 is matched and glued to the inner surface of the outer sill plate 2. The metal sill plate 24 has a matching hollow elongated hole 241 at the position of the long receiving groove 231. The long receiving groove 231 is sleeved on the hollow elongated hole 241, and the upper part of the long receiving groove 231 is exposed outside the hollow elongated hole 241. The front end of the outer sill plate 2 has an upwardly bent slope surface, and the corresponding position of the metal sill plate 24 also has an upwardly bent slope surface.

[0064] Example 3

[0065] See Figure 1 , Figures 4-5 As shown, an electric pedal structure includes an inner sill plate 1, an outer sill plate 2, two movable limiting support arms 3, and a forward and reverse motor 4.

[0066] The lower end of the outer threshold plate 2 is pivotally connected to the corresponding position on the outer surface of the inner threshold plate 1. The inner surface of the outer threshold plate 2 can be interlocked and fixed with the corresponding position of the outer surface of the inner threshold plate 1. The two movable limiting support arms 3 are movably connected to the corresponding positions on both sides of the inner surface of the outer threshold plate and the outer surface of the inner threshold plate. The two movable limiting support arms 3 can be accommodated in the space formed by the interlocked outer threshold plate 2 and the inner threshold plate 1.

[0067] The forward and reverse motor 4 is fixed to one end of the inner door sill plate 1, and the rotating shaft of the forward and reverse motor 4 is connected to the pivot of the outer door sill plate 2.

[0068] Each of the aforementioned movable limiting support arms 3 is a pneumatic rod structure, including a pneumatic rod body 33 and a pneumatic rod telescopic arm 34. The pneumatic rod telescopic arm 34 is telescopically sleeved on one end of the pneumatic rod body 33. The free end of the pneumatic rod body 33 is rotatably connected to the outer surface of the inner sill plate 1, and the free end of the pneumatic rod telescopic arm 34 is slidably connected to the corresponding position on the inner surface of the outer sill plate 2. The free end of the pneumatic rod telescopic arm 34 can slide up and down on the inner surface of the outer sill plate 2.

[0069] The outer sill plate 2 includes a drive shaft 21. Several drive shaft bushing seats 22 are respectively provided on the lower end of the inner surface of the outer sill plate 2. The drive shaft 21 is horizontally rotatably embedded in several drive shaft bushing seats. The two ends of the drive shaft 21 are respectively rotatably connected to the corresponding positions on the outer surface of the inner sill plate 1. One end of the drive shaft 21 passes through the corresponding position of the inner sill plate and is connected to the rotating shaft of the forward and reverse motor 4 for transmission.

[0070] A protruding strip 23 is provided on the inner surface of the outer sill plate 2 at the position corresponding to the movable limiting support arm 3. A long receiving groove 231 is provided at the upper end of the protruding strip 23 in the length direction. The free end of the pneumatic rod telescopic arm 34 is slidably connected to the inner wall of the long receiving groove 231, and the pneumatic rod body 33 and the pneumatic rod telescopic arm 34 can be accommodated in the long receiving groove 231. A clearance groove 11 is provided on the inner sill plate 1 at the position corresponding to the long receiving groove 231. The long receiving groove 231 is accommodated in the clearance groove 11, and the free end of the pneumatic rod body 33 is rotatably connected to the clearance groove 11.

[0071] A reinforcing rib 12 extends horizontally backward from the upper end of the inner sill plate 1. Riveting connection parts 13 are respectively provided at the left and right ends of the upper part of the inner sill plate 1. A receiving platform 14 extends horizontally backward from the lower end of the inner sill plate 1. Screw-in protrusions 15 are respectively provided at the upper left and right ends of the receiving platform 14. A metal sill plate 24 is matched and glued to the inner surface of the outer sill plate 2. The metal sill plate 24 has a matching hollow elongated hole 241 at the position of the long receiving groove 231. The long receiving groove 231 is sleeved on the hollow elongated hole 241, and the upper part of the long receiving groove 231 is exposed outside the hollow elongated hole 241. The front end of the outer sill plate 2 has an upwardly bent slope surface, and the corresponding position of the metal sill plate 24 also has an upwardly bent slope surface.

[0072] Example 4

[0073] See Figures 1-5 As shown, a door sill includes an outer door panel 5 and a side panel 6, and also includes an electric pedal structure. The riveted connection part 13 of the inner door sill 1 is fixed to the upper part of the side panel 6 by rivets, and the screwed protrusion 15 of the inner door sill 1 is fixed to the lower part of the side panel 6 by bolts. The lower end of the outer door panel 5 is adjacent to the upper part of the reinforcing rib 12 of the inner door sill 1.

[0074] Example 5

[0075] An automobile includes door sills and body panels, with door sills located on both sides of the body panels.

[0076] Working principle

[0077] The remote key controls the car to power on, and the vehicle controller determines whether the door is open. If the door is open, it then determines whether the door sill is in its original position. If the door sill is in its original position, the vehicle controller sends a command to drive the motor to rotate the door sill to a horizontal position, allowing the driver and passengers to step on the door sill to enter the car. The door sill changes from a decorative element to a step.

[0078] Once all occupants are inside the car and all doors are closed, the vehicle controller checks if the door sill is in its original position. If it is not, the controller sends a command to the drive motor to restore the door sill to its original position, thus completing the automatic flipping of the door sill. The door sill then changes from a stepping function to a decorative feature.

[0079] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. An electric pedal structure, characterized in that: It includes an inner sill plate (1), an outer sill plate (2), at least one movable limit support arm (3), and a forward and reverse motor (4); The lower end of the outer threshold plate (2) is pivotally connected to the corresponding position on the outer surface of the inner threshold plate (1). The inner surface of the outer threshold plate (2) can be fastened and fixed to the corresponding position of the outer surface of the inner threshold plate (1). At least one movable limiting support arm (3) is movably connected to the corresponding position on the inner surface of the outer threshold plate and the outer surface of the inner threshold plate. At least one movable limiting support arm (3) can be accommodated in the space formed by the fastened outer threshold plate (2) and the inner threshold plate (1). The forward and reverse motor (4) is fixed to one end of the inner door sill plate (1), and the rotating shaft of the forward and reverse motor (4) is connected to the pivot of the outer door sill plate (2).

2. The electric pedal structure according to claim 1, characterized in that: The movable limiting support arm (3) is a hinge structure, including a first hinge arm (31) and a second hinge arm (32). The first hinge arm (31) and the second hinge arm (32) are rotatably connected. The free end of the first hinge arm (31) is rotatably connected to the outer surface of the inner sill plate (1), and the free end of the second hinge arm (32) is rotatably connected to the corresponding position on the inner surface of the outer sill plate (2).

3. The electric pedal structure according to claim 1, characterized in that: The movable limiting support arm (3) is a pneumatic rod structure, including a pneumatic rod body (33) and a pneumatic rod telescopic arm (34). The pneumatic rod telescopic arm (34) is telescopically sleeved on one end of the pneumatic rod body (33). The free end of the pneumatic rod body (33) is rotatably connected to the outer surface of the inner sill plate (1). The free end of the pneumatic rod telescopic arm (34) is slidably connected to the corresponding position on the inner surface of the outer sill plate (2). The free end of the pneumatic rod telescopic arm (34) can slide up and down on the inner surface of the outer sill plate (2).

4. The electric pedal structure according to claim 1, characterized in that: The lower ends of the outer door sill plate (2) are pivotally connected to the corresponding positions on the outer surface of the inner door sill plate (1), and the pivot on one side of the outer door sill plate (2) penetrates the corresponding position of the inner door sill plate and is connected to the rotating shaft of the forward and reverse motor (4) for transmission.

5. The electric pedal structure according to claim 1, characterized in that: The outer sill plate (2) includes a drive shaft (21). Several drive shaft bushings (22) are respectively provided on the lower end of the inner surface of the outer sill plate (2). The drive shaft (21) is horizontally rotatably embedded in several drive shaft bushings. The two ends of the drive shaft (21) are respectively rotatably connected to the corresponding positions on the outer surface of the inner sill plate (1). One end of the drive shaft (21) passes through the corresponding position of the inner sill plate and is connected to the rotating shaft of the forward and reverse motor (4) for transmission.

6. The electric pedal structure according to claim 2, characterized in that: A protruding strip (23) is provided on the inner surface of the outer sill plate (2) corresponding to the position of the movable limiting support arm (3). A long receiving groove (231) is provided at the upper end of the protruding strip (23) in the length direction. The free end of the second hinge arm (32) is rotatably connected to the long receiving groove (231). The first hinge arm (31) and the second hinge arm (32) after being rotated and folded can be accommodated in the long receiving groove (231). A clearance groove (11) is provided on the inner sill plate (1) corresponding to the position of the long receiving groove (231). The long receiving groove (231) is accommodated in the clearance groove (11). The free end of the first hinge arm (31) is rotatably connected to the clearance groove (11).

7. The electric pedal structure according to claim 3, characterized in that: A protruding strip (23) is provided on the inner surface of the outer sill plate (2) corresponding to the position of the movable limiting support arm (3). A long receiving groove (231) is provided at the upper end of the protruding strip (23) in the length direction. The free end of the pneumatic rod telescopic arm (34) is slidably connected to the inner wall of the long receiving groove (231). The pneumatic rod body (33) and the pneumatic rod telescopic arm (34) can be accommodated in the long receiving groove (231). A clearance groove (11) is provided on the inner sill plate (1) corresponding to the position of the long receiving groove (231). The long receiving groove (231) is accommodated in the clearance groove (11). The free end of the pneumatic rod body (33) is rotatably connected to the clearance groove (11).

8. An electric pedal structure according to claim 6 or 7, characterized in that: The upper end of the inner sill plate (1) has a reinforcing rib (12) extending horizontally backward. The upper left and right ends of the inner sill plate (1) are respectively provided with riveting connection parts (13). The lower end of the inner sill plate (1) has a receiving platform (14) extending horizontally backward. The upper left and right ends of the receiving platform (14) are respectively provided with screw protrusions (15). The inner surface of the outer sill plate (2) is fitted with a metal sill plate (24). The metal sill plate (24) is provided with a hollowed-out long strip hole (241) with a matching shape at the position of the long receiving groove (231). The long receiving groove (231) is fitted onto the hollowed-out long strip hole (241), and the upper part of the long receiving groove (231) is exposed outside the hollowed-out long strip hole (241). The front end of the outer sill plate (2) is provided with an upwardly bent slope surface. The corresponding position of the metal sill plate (24) is also provided with an upwardly bent slope surface.

9. A threshold, characterized in that: The vehicle includes an outer door panel (5) and a side panel (6), and also includes an electric pedal structure as described in any one of claims 1-8. The riveted connection part (13) of the inner door panel (1) is fixed to the upper part of the side panel (6) by rivets, and the screwed protrusion (15) of the inner door panel (1) is fixed to the lower part of the side panel (6) by bolts. The lower end of the outer door panel (5) is adjacent to the upper part of the reinforcing rib (12) of the inner door panel (1).

10. A car, characterized in that: It includes the vehicle body sheet metal, and also includes the door sill as described in claim 9, the door sill being disposed on the vehicle body sheet metal on both sides of the vehicle.

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