Pedal expansion and contraction device, threshold pedal and vehicle

Abstract

The utility model discloses a pedal expansion and contraction device, a threshold pedal and a vehicle, the pedal expansion and contraction device is applied to the threshold pedal, the threshold pedal comprises a pedal body, the threshold pedal has a first direction and a second direction, the first direction intersects with the second direction, and the pedal expansion and contraction device comprises a driving part and a plurality of crank sliding block mechanisms. The multiple crank-slider mechanisms are arranged at intervals in the first direction, each crank-slider mechanism comprises a crank, a sliding piece and a universal connecting piece, one end of each crank is connected with one end of the corresponding sliding piece through the corresponding universal connecting piece, and the driving piece is connected with the end, away from the corresponding sliding piece, of at least one crank and used for driving the crank to rotate in the first direction. The end, away from the crank, of the sliding piece is used for being connected with a pedal body. According to the pedal expansion and contraction device, the expansion and contraction smoothness of the pedal body can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle accessories, and in particular to a pedal retracting device, a threshold pedal and a vehicle. Background Art

[0002] As users' vehicle experience improves, more and more vehicles are equipped with electric door sill pedals, which use a pedal telescopic device to drive the pedal body to extend and retract. Since the pedal body is long, it is usually necessary to provide a set of pedal telescopic mechanisms at both ends of the pedal body to facilitate the extension and retraction of the pedal body. In traditional door sill pedals, due to vehicle body tolerances, pedal body manufacturing tolerances, and installation errors of the two sets of pedal telescopic mechanisms, it is difficult for the two sets of pedal telescopic mechanisms to remain relatively parallel, which can easily lead to the pedal body extending and retracting smoothly, getting stuck, and stopping. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a pedal retraction device that can improve the smoothness of the retraction of the pedal body.

[0004] The present application also provides a threshold pedal.

[0005] The present application also provides a vehicle.

[0006] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0007] According to the pedal extension device of the first aspect embodiment of the present application, it is applied to a threshold pedal, the threshold pedal includes a pedal body, the threshold pedal has a first direction and a second direction, the first direction intersects with the second direction, the pedal extension device includes: a driving member; a plurality of crank slider mechanisms, the plurality of crank slider mechanisms are arranged at intervals along the first direction, the crank slider mechanism includes a crank, a sliding member and a universal joint, one end of the crank is connected to one end of the sliding member through the universal joint, the driving member is connected to an end of at least one of the cranks away from the sliding member, and is used to drive the crank to rotate around the first direction, so that the crank drives the sliding member to move along the second direction, and the end of the sliding member away from the crank is used to be connected to the pedal body.

[0008] The pedal retractable device of the present application has the following advantages:

[0009] In the pedal extension device of the present application, since the driving member is used to drive the crank to rotate around the first direction, the crank is used to drive the sliding member to move along the second direction, and the end of the sliding member away from the crank is used to connect with the pedal body, therefore, when the driving member drives the crank to rotate around the first direction, the crank can drive the sliding member to move along the second direction, so that the sliding member drives the pedal body to move along the second direction. Since the driving member is connected to at least one crank, and multiple crank-slider mechanisms spaced apart along the first direction can be connected to the pedal body through the sliding member, therefore, the crank-slider mechanism connected to the driving member can be an active motion mechanism, and the crank not connected to the driving member can be The slider mechanism is a driven motion mechanism, which drives the pedal body to move along the second direction simultaneously through the active motion mechanism and the driven motion mechanism, so as to realize the extension and retraction of the pedal body. In this process, since the crank and the sliding member are connected by a universal joint, the sliding member can swing in a universal direction relative to the crank. Even if the sliding member of the active motion mechanism and the sliding member of the driven motion mechanism are kept in a parallel state, the sliding member can be adaptively adjusted through the universal joint so that the multiple sliding members can maintain a parallel state, so that the direction of the thrust provided to the pedal body by the multiple sliding members is consistent, thereby improving the smoothness of the extension and retraction of the pedal body.

[0010] According to the pedal extension device of the first aspect embodiment of the present application, the universal connecting part includes a first connecting part and a second connecting part connected to the first connecting part, the first connecting part is fixedly connected to the sliding part, the second connecting part is fixedly connected to the crank, and the first connecting part and the second connecting part are universally rotatable.

[0011] According to the pedal extension device of the first embodiment of the present application, the crank slider mechanism also includes a first connecting shaft, the crank and the sliding member are rotationally connected through the first connecting shaft, and the second connecting part is fixedly connected to the first connecting shaft.

[0012] According to the pedal extension device of the first aspect embodiment of the present application, the first connecting shaft extends along the first direction and rotates around the first direction, the crank is connected to the portion between the two ends of the first connecting shaft along the first direction, and the crank slider mechanism has a plurality of universal joints, one end of the crank along the first direction is connected to the sliding member through at least one universal joint, and the other end of the crank along the first direction is connected to the sliding member through at least one universal joint.

[0013] According to the pedal extension device of the first aspect embodiment of the present application, the crank slider mechanism also includes a frame, the crank and the sliding member are both connected to the frame, and the crank rotates around the first direction relative to the frame, and the sliding member slides along the second direction relative to the frame.

[0014] According to the pedal extension device of the first aspect embodiment of the present application, the threshold pedal also has a third direction, which intersects with the first direction and the second direction respectively. The frame includes a main body, a first limiting part and a second limiting part. The crank is rotatably connected to one end of the main body along the second direction. The first limiting part and the second limiting part are both arranged at one end of the main body away from the crank along the second direction, and the first limiting part and the second limiting part are spaced apart along the third direction to define a sliding space. The sliding member is penetrated into the sliding space and slides relative to the sliding space along the second direction.

[0015] According to the pedal extension device of the first aspect embodiment of the present application, the crank slider mechanism also includes a second connecting shaft, the crank is connected to the frame through the second connecting shaft, and the driving member is connected to the second connecting shaft of at least one of the crank slider mechanisms and is used to drive the second connecting shaft to rotate in the first direction.

[0016] According to the pedal extension device of the first aspect embodiment of the present application, the pedal extension device includes two crank slider mechanisms, which are respectively used to connect to the two ends of the pedal body along the first direction, and the driving member is connected to one of the crank slider mechanisms.

[0017] According to the second aspect of the present application, the threshold pedal includes: a pedal body; and the pedal extension device as described above, wherein the pedal extension device is connected to the pedal body and is used to drive the pedal body to extend and retract.

[0018] The threshold pedal of the present application has the following advantages:

[0019] In the threshold pedal of the present application, the pedal body can be driven to extend and retract by the above-mentioned pedal retracting device. Since the above-mentioned pedal retracting device can improve the smoothness of the extension and retraction of the pedal body, the threshold pedal of the present application can improve the user experience.

[0020] A vehicle according to an embodiment of the third aspect of the present application includes: the threshold pedal as described above.

[0021] The vehicle of the present application has the following advantages:

[0022] In the vehicle of the present application, since the above-mentioned threshold pedal can improve the user's usage experience, the vehicle of the present application can have a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 Shows the structure of the threshold pedal in this application Figure 1 ;

[0025] Figure 2 Shows the structure of the threshold pedal in this application Figure 2 ;

[0026] Figure 3 Shows a schematic structural diagram of the crank slider mechanism in this application;

[0027] Figure 4 Shows an exploded structural diagram of the crank slider mechanism in this application;

[0028] Figure 5 A schematic structural diagram of the universal connector in this application is shown.

[0029] Description of main component symbols:

[0030] 10- pedal retractable device;

[0031] 100-driving member;

[0032] 200 - Slider-crank mechanism; 210 - Crank; 220 - Sliding member; 230 - Universal joint; 231 - First connecting portion; 232 - Second connecting portion; 240 - First connecting shaft; 250 - Frame; 251 - Main body; 252 - First limiting portion; 253 - Second limiting portion; 254 - Sliding space; 260 - Second connecting shaft;

[0033] 20- pedal body;

[0034] x-first direction; y-second direction; z-third direction. DETAILED DESCRIPTION

[0035] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0038] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, the pedal retraction device 10 involved in the embodiment of the present application is applied to a threshold pedal. The threshold pedal includes a pedal body 20. The threshold pedal has a first direction x and a second direction y. The first direction x intersects with the second direction y. The pedal retraction device 10 includes: a driving member 100 and a plurality of crank slider mechanisms 200.

[0041] Specifically, multiple crank slider mechanisms 200 are arranged at intervals along the first direction x, and the crank slider mechanism 200 includes a crank 210, a sliding member 220 and a universal joint 230. One end of the crank 210 is connected to one end of the sliding member 220 through the universal joint 230. The driving member 100 is connected to the end of at least one crank 210 away from the sliding member 220, and is used to drive the crank 210 to rotate around the first direction x, so that the crank 210 drives the sliding member 220 to move along the second direction y, and the end of the sliding member 220 away from the crank 210 is used to be connected to the pedal body 20.

[0042] It should be noted that the first direction x is Figure 1 as well as Figure 2 The direction pointed by x is the second direction y. Figure 1 as well as Figure 2 The direction indicated by y.

[0043] In the pedal extension device 10 of the present application, since the driving member 100 is used to drive the crank 210 to rotate around the first direction x, the crank 210 is used to drive the sliding member 220 to move along the second direction y, and the end of the sliding member 220 away from the crank 210 is used to connect with the pedal body 20, therefore, when the driving member 100 drives the crank 210 to rotate around the first direction x, the crank 210 can drive the sliding member 220 to move along the second direction y, so that the sliding member 220 drives the pedal body 20 to move along the second direction y, and since the driving member 100 is connected to at least one crank 210, and can make multiple crank slider mechanisms 200 spaced apart along the first direction x connected to the pedal body 20 through the sliding member 220, therefore, the crank slider mechanism 200 connected to the driving member 100 can be an active motion mechanism, not connected to the pedal body 20. The crank slider mechanism 200 connected to the driving member 100 is a driven motion mechanism, which drives the pedal body 20 to move along the second direction y simultaneously through the active motion mechanism and the driven motion mechanism, so as to realize the extension and retraction of the pedal body 20. In this process, since the crank 210 and the sliding member 220 are connected by the universal connector 230, the sliding member 220 can make universal swings relative to the crank 210. Even if the sliding member 220 of the active motion mechanism and the sliding member 220 of the driven motion mechanism are kept in a parallel state, the sliding member 220 can be adaptively adjusted through the universal connector 230 so that the multiple sliding members 220 can keep in a parallel state, so that the directions of the thrust provided to the pedal body 20 by the multiple sliding members 220 are consistent, thereby improving the smoothness of the extension and retraction of the pedal body 20.

[0044] Reference Figure 3 as well as Figure 5As shown, the universal connecting member 230 includes a first connecting portion 231 and a second connecting portion 232 connected to the first connecting portion 231. The first connecting portion 231 is fixedly connected to the sliding member 220, and the second connecting portion 232 is fixedly connected to the crank 210. The first connecting portion 231 and the second connecting portion 232 are universally rotatable.

[0045] In this embodiment, since the first connecting portion 231 is fixedly connected to the sliding member 220, the second connecting portion 232 is fixedly connected to the crank 210, and the first connecting portion 231 and the second connecting portion 232 are universally rotatable, the sliding member 220 can be universally rotated relative to the crank 210 through the cooperation of the first connecting portion 231 and the second connecting portion 232, so that the sliding member 220 can perform angle adaptive adjustment.

[0046] Specifically, in this embodiment, the universal connector 230 is a universal bearing, the first connecting part 231 is the rolling body of the universal bearing, and the second connecting part 232 is the shell of the universal bearing. The rolling body rotates in the shell to achieve universal rotation of the first connecting part 231 and the second connecting part 232.

[0047] Reference Figure 4 As shown, the crank slider mechanism 200 further includes a first connecting shaft 240 , the crank 210 and the sliding member 220 are rotatably connected via the first connecting shaft 240 , and the second connecting portion 232 is fixedly connected to the first connecting shaft 240 .

[0048] In this embodiment, since the crank 210 and the sliding member 220 are rotationally connected through the first connecting shaft 240, and the second connecting portion 232 is fixedly connected to the first connecting shaft 240, when the sliding member 220 and the crank 210 rotate relative to each other, the sliding member 220 can make a universal rotation relative to the crank 210, so that the sliding member 220 can perform angle adaptive adjustment.

[0049] Continue to refer to Figure 4 As shown, the first connecting shaft 240 extends along the first direction x and rotates around the first direction x. The crank 210 is connected to the portion between the two ends of the first connecting shaft 240 along the first direction x. The crank slider mechanism 200 has a plurality of universal connectors 230. One end of the crank 210 along the first direction x is connected to the sliding member 220 through at least one universal connector 230, and the other end of the crank 210 along the first direction x is connected to the sliding member 220 through at least one universal connector 230.

[0050] In this embodiment, when the first connecting shaft 240 rotates about the first direction x, the sliding member 220 and the crank 210 can rotate relative to each other about the first direction x. Since the crank 210 is connected to the first connecting shaft 240 at the position between the two ends along the first direction x, the sliding member 220 is connected to the two ends of the first connecting shaft 240 along the first direction x. Therefore, when the sliding member 220 and the crank 210 rotate relative to each other, the stress on the first connecting shaft 240 can be reduced, thereby ensuring that the rotation axes of the first connecting shaft 240, the crank 210 and the sliding member 220 are parallel, thereby improving the crank 210 and the sliding member. The relative rotation between the moving parts 220 is smooth. Furthermore, since one end of the crank 210 along the first direction x is connected to the sliding part 220 through at least one universal joint 230, and the other end of the crank 210 along the first direction x is connected to the sliding part 220 through at least one universal joint 230, both ends of the sliding part 220 connected to the first connecting shaft 240 can make universal rotation relative to the first connecting shaft 240, and further the sliding part 220 can make universal rotation as a whole relative to the crank 210, thereby reducing the stress on the sliding part 220 and improving the service life of the sliding part 220.

[0051] Reference Figure 3 as well as Figure 4 As shown, the crank slider mechanism 200 further includes a frame 250 , the crank 210 and the slide 220 are both connected to the frame 250 , and the crank 210 rotates relative to the frame 250 in a first direction x, and the slide 220 slides relative to the frame 250 in a second direction y.

[0052] In this embodiment, when the crank 210 rotates relative to the frame 250 about the first direction x, the crank 210 can drive the sliding member 220 to slide relative to the frame 250 along the second direction y, so that the sliding member 220 drives the pedal body 20 to extend and retract along the second direction y.

[0053] Reference Figure 4 As shown, the threshold pedal also has a third direction z, which intersects with the first direction x and the second direction y respectively. The frame 250 includes a main body 251, a first limiting portion 252 and a second limiting portion 253. The crank 210 is rotatably connected to one end of the main body 251 along the second direction y. The first limiting portion 252 and the second limiting portion 253 are both arranged at one end of the main body 251 away from the crank 210 along the second direction y, and the first limiting portion 252 and the second limiting portion 253 are spaced apart along the third direction z to define a sliding space 254. The sliding member 220 is penetrated into the sliding space 254 and slides relative to the sliding space 254 along the second direction y.

[0054] It should be noted that the third direction z is Figure 1 as well as Figure 2 The direction indicated by z.

[0055] In this embodiment, since the first limiting portion 252 and the second limiting portion 253 are both arranged at one end of the main body 251 away from the crank 210 along the second direction y, and the first limiting portion 252 and the second limiting portion 253 are spaced apart along the third direction z to define a sliding space 254, the sliding member 220 can be passed through the sliding space 254 to limit the sliding member 220 through the sliding space 254, so that the sliding member 220 can slide along the second direction y in the sliding space 254, thereby enabling the sliding member 220 to drive the pedal body 20 to extend and retract along the second direction y.

[0056] Specifically, refer to Figure 1 、 Figure 2 as well as Figure 4 As shown, in this embodiment, due to the limitation of the sliding member 220 by the first limiting portion 252 and the second limiting portion 253, when the crank 210 rotates about the first direction x, the first limiting portion 252 or the second limiting portion 253 will cause the sliding member 220 to rotate about the first direction x relative to the crank 210, so that the sliding member 220 can be inserted into the sliding space 254. At this time, the sliding member 220 will not only move along the second direction y, but also move in the third direction z. In this way, the sliding member 220 can drive the pedal body 20 to descend while extending along the second direction y, or drive the pedal body 20 to rise while contracting along the second direction y, thereby realizing the retraction and extension of the pedal body 20.

[0057] Reference Figure 4 As shown, the crank slider mechanism 200 further includes a second connecting shaft 260, the crank 210 is connected to the frame 250 via the second connecting shaft 260, and the driving member 100 is connected to the second connecting shaft 260 of at least one crank slider mechanism 200, and is used to drive the second connecting shaft 260 to rotate in the first direction x.

[0058] In this embodiment, the crank 210 can be connected to the frame 250 via the second connecting shaft 260 so that the crank 210 can rotate around the first direction x relative to the frame 250. Since the driving member 100 is connected to the second connecting shaft 260 of at least one crank slider mechanism 200 and is used to drive the second connecting shaft 260 to rotate in the first direction x, the second connecting shaft 260 of at least one crank slider mechanism 200 can become a driving shaft, thereby driving multiple crank slider mechanisms 200 to move simultaneously.

[0059] Specifically, refer to Figure 3 as well as Figure 4As shown, in this embodiment, due to the structural characteristics of the crank slider mechanism 200, a triangular structure is formed between the first connecting shaft 240, the second connecting shaft 260 and the sliding space 254. When the crank 210 rotates around the first direction x, the distance between the first connecting shaft 240 and the sliding space 254 will change, that is, one of the sides of the triangular structure will change in length. In order to ensure that the first connecting shaft 240, the second connecting shaft 260 and the sliding space 254 still form a triangular structure, the sliding member 220 will change in angle. At this time, the sliding member 220 will not only slide along the second direction y, but also rotate around the first direction x relative to the crank 210. In this way, the sliding member 220 will not only move along the second direction y, but also move in the third direction z, thereby realizing the retraction and extension of the pedal body 20.

[0060] Reference Figure 1 as well as Figure 2 As shown, the pedal retracting device 10 includes two crank slider mechanisms 200 , which are respectively used to be connected to both ends of the pedal body 20 along the first direction x, and the driving member 100 is connected to one of the crank slider mechanisms 200 .

[0061] In this embodiment, since the driving member 100 is connected to one of the crank slider mechanisms 200, the crank slider mechanism 200 connected to the driving member 100 can be made into an active motion mechanism, and the crank slider mechanism 200 not connected to the driving member 100 can be made into a driven motion mechanism, so as to drive the two ends of the pedal body 20 to extend and retract simultaneously through the active motion mechanism and the driven motion mechanism, thereby improving the consistency of the extension and retraction of various parts of the pedal body 20.

[0062] Reference Figure 1 as well as Figure 2 As shown, the threshold pedal involved in the embodiment of the present application includes: a pedal body 20; and the above-mentioned pedal extension device 10, which is connected to the pedal body 20 and is used to drive the pedal body 20 to extend and retract.

[0063] In the threshold pedal of the present application, the pedal body 20 can be driven to extend and retract by the above-mentioned pedal extension device 10. Since the above-mentioned pedal extension device 10 can improve the smoothness of the extension and retraction of the pedal body 20, the threshold pedal of the present application can improve the user experience.

[0064] The vehicle involved in the embodiment of the present application includes: the above-mentioned threshold pedal.

[0065] In the vehicle of the present application, since the above-mentioned threshold pedal can improve the user's usage experience, the vehicle of the present application can have a better user experience.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A pedal retractable device, characterized in that: Applied to a threshold pedal, the threshold pedal includes a pedal body, the threshold pedal has a first direction and a second direction, the first direction intersects the second direction, and the pedal retracting device includes: driving parts; Multiple crank slider mechanisms, multiple crank slider mechanisms are arranged at intervals along the first direction, the crank slider mechanisms include a crank, a sliding member and a universal joint, one end of the crank is connected to one end of the sliding member through the universal joint, the driving member is connected to the end of at least one of the cranks away from the sliding member, and is used to drive the crank to rotate around the first direction so that the crank drives the sliding member to move along the second direction, and the end of the sliding member away from the crank is used to be connected to the pedal body.

2. The pedal extension device according to claim 1, characterized in that: The universal connecting member includes a first connecting portion and a second connecting portion connected to the first connecting portion, the first connecting portion is fixedly connected to the sliding member, the second connecting portion is fixedly connected to the crank, and the first connecting portion and the second connecting portion are universally rotatable.

3. The pedal extension device according to claim 2, characterized in that: The crank slider mechanism further includes a first connecting shaft, the crank and the sliding member are rotationally connected via the first connecting shaft, and the second connecting portion is fixedly connected to the first connecting shaft.

4. The pedal extension device according to claim 3, characterized in that: The first connecting shaft extends along the first direction and rotates around the first direction. The crank is connected to the portion between the two ends of the first connecting shaft along the first direction. The crank slider mechanism has a plurality of universal joints. One end of the crank along the first direction is connected to the sliding member through at least one universal joint, and the other end of the crank along the first direction is connected to the sliding member through at least one universal joint.

5. The pedal extension device according to claim 1, characterized in that: The crank slider mechanism further includes a frame, the crank and the sliding member are both connected to the frame, and the crank rotates relative to the frame about the first direction, and the sliding member slides relative to the frame along the second direction.

6. The pedal extension device according to claim 5, characterized in that: The threshold pedal also has a third direction, which intersects with the first direction and the second direction respectively. The frame includes a main body, a first limiting portion and a second limiting portion. The crank is rotatably connected to one end of the main body along the second direction. The first limiting portion and the second limiting portion are both arranged at one end of the main body away from the crank along the second direction, and the first limiting portion and the second limiting portion are spaced apart along the third direction to define a sliding space. The sliding member is penetrated into the sliding space and slides relative to the sliding space along the second direction.

7. The pedal extension device according to claim 5, characterized in that: The crank slider mechanism also includes a second connecting shaft, the crank is connected to the frame via the second connecting shaft, the driving member is connected to the second connecting shaft of at least one of the crank slider mechanisms, and is used to drive the second connecting shaft to rotate in the first direction.

8. The pedal extension device according to claim 1, characterized in that: The pedal retracting device includes two crank slider mechanisms, which are respectively used to be connected to the two ends of the pedal body along the first direction, and the driving member is connected to one of the crank slider mechanisms.

9. A threshold pedal, characterized in that: include: pedal body; as well as The pedal retractable device according to any one of claims 1 to 8, wherein the pedal retractable device is connected to the pedal body and is used to drive the pedal body to retract.

10. A vehicle, characterized in that: include: The door sill pedal according to claim 9.

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