CN115489435A

CN115489435A - Pedal telescopic mechanism and automobile telescopic pedal

Info

Publication number: CN115489435A
Application number: CN202110681310.4A
Authority: CN
Inventors: 罗国栋; 陈昌彪; 杨杰
Original assignee: Guangdong Dongjian Automobile Technology Co Ltd
Current assignee: Guangdong Dongjian Automobile Technology Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-12-20

Abstract

The invention relates to a pedal telescoping mechanism and an automobile telescoping pedal, comprising: the power assembly comprises a base and a rotary output shaft which can be controlled to be connected to the base in a rotating mode. The connecting rod assembly comprises a first connecting rod mechanism and a second connecting rod mechanism, the first connecting rod mechanism comprises a rotating end and a first telescopic end, and the rotating end is connected to the rotating output shaft. The second link mechanism comprises a driven end and a second telescopic end which are opposite, and is in transmission connection with the rotary output shaft. The support is used for installing the pedal and is connected with the first telescopic end and the second telescopic end. Above-mentioned footboard telescopic machanism has avoided the single link mechanism driven mode of traditional footboard telescopic machanism for footboard telescopic machanism's reliability is stronger. Because the first connecting rod mechanism and the second connecting rod mechanism adopt the same rotary output shaft as power source drive, the telescopic motion of the first connecting rod mechanism and the second connecting rod mechanism is synchronously carried out, and the phenomenon that the pedals of the first connecting rod mechanism and the second connecting rod mechanism incline due to asynchronous telescopic motion is avoided.

Description

Pedal telescopic mechanism and automobile telescopic pedal

Technical Field

The invention relates to the technical field of automobile accessories, in particular to a pedal telescopic mechanism and an automobile telescopic pedal.

Background

The electric pedal is an accessory which is arranged on two sides of the pickup truck and close to the skirt edge of the vehicle. The automobile chassis of the pickup truck is generally higher than the ground, so that a user is inconvenient to board, and the electric pedal is used for creating a boarding step for the user to assist the user to get on or off the truck smoothly. The traditional electric pedal is driven by a single motor by taking metal, steel or aluminum alloy as a base body. When the door is opened, the electric pedal system detects the opening and closing of the door, so that the motor drives the support to stretch, the pedal is lowered to a proper position, and people can get on or off the vehicle conveniently.

However, because the influence of the use environment of the automobile is complex, the traditional telescopic mechanism of the electric pedal is easy to have telescopic faults in practical use, and the stability is poor.

Disclosure of Invention

In view of the above, it is desirable to provide a retractable pedal mechanism and a retractable pedal for an automobile, which can solve the problem of poor stability of the retractable pedal mechanism.

A pedal retraction mechanism, comprising:

the power assembly comprises a base and a rotary output shaft which can be controlled to be connected to the base in a rotating mode;

the connecting rod assembly comprises a first connecting rod mechanism and a second connecting rod mechanism, the first connecting rod mechanism comprises a rotating end and a first telescopic end which are opposite, the rotating end is in transmission connection with the rotating output shaft, and the first telescopic end responds to the rotating motion of the rotating end and outputs telescopic motion along a first direction; the second connecting rod mechanism comprises a driven end and a second telescopic end which are opposite, the driven end is rotatably connected to the base and is in transmission connection with the rotary output shaft, and the second telescopic end responds to the rotary motion of the driven section and outputs telescopic motion along the first direction;

and the bracket is used for mounting the pedal and is connected with the first telescopic end and the second telescopic end.

In one embodiment, the power assembly further comprises a driving gear, wherein the driving gear is mounted on the rotary output shaft and rotates synchronously with the rotary output shaft;

the second link mechanism further comprises a driven gear fixedly connected to the driven end, and the driven gear is meshed with the driving gear.

In one embodiment, during the process that the rotating output shaft drives the rotating end and the driven end to rotate, the connecting rod assembly comprises a retracting state and an extending state;

when the linkage assembly is in the retracted state, the first linkage mechanism and the second linkage mechanism move away from each other to retract the first telescoping end and the second telescoping end in the first direction relative to the base; when the connecting rod assembly is in the extending state, the first connecting rod mechanism and the second connecting rod mechanism move towards the direction close to each other to the first telescopic end and the second telescopic end and extend out along the first direction relative to the base.

In one embodiment, the connecting rod assembly further comprises a clamping piece, one of the first connecting rod mechanism and the second connecting rod mechanism is mounted on the clamping piece, and the other of the first connecting rod mechanism and the second connecting rod mechanism is provided with a clamping groove;

when the connecting rod assembly is in the extending state, the first clamping piece is clamped in the clamping groove; when the connecting rod assembly is in the retraction state, the first clamping piece is separated from the clamping groove.

In one embodiment, the clamping piece is provided with an elastic clamping part clamped with the clamping groove.

In one embodiment, the first link mechanism comprises a first link and a second link, one end of the first link and one end of the second link are hinged to each other, the other end of the first link serves as the rotating end, and the other end of the second link serves as the first telescopic end and is hinged to the bracket;

the second connecting rod mechanism comprises a third connecting rod and a fourth connecting rod, one end of the third connecting rod is hinged to one end of the fourth connecting rod, the other end of the third connecting rod serves as the driven end, and the other end of the fourth connecting rod serves as the second telescopic end and is hinged to the support.

In one embodiment, one of the first connecting rod and the third connecting rod is provided with the clamping piece, and the other of the first connecting rod and the third connecting rod is provided with the clamping groove; and/or

One of the second connecting rod and the fourth connecting rod is provided with the clamping piece, and the other of the second connecting rod and the fourth connecting rod is provided with the clamping groove.

In one embodiment, the power assembly further comprises a driving member mounted on the base, and an output shaft of the driving member is the rotary output shaft.

In one embodiment, the power assembly further comprises a power input shaft which can be controlled to be connected to the base in a rotating mode, the power input shaft is a worm, and a worm wheel is mounted on the rotating output shaft and meshed with the worm.

An automobile telescopic pedal comprises the pedal telescopic mechanism.

Above-mentioned footboard telescopic machanism and car flexible footboard are owing to use first link mechanism and the same drive support of second link mechanism in order to realize stretching out and the shrink motion of footboard, have avoided the single link mechanism driven mode of traditional footboard telescopic machanism for footboard telescopic machanism's reliability is stronger. Furthermore, as the first connecting rod mechanism and the second connecting rod mechanism adopt the same rotary output shaft as a power source for driving, the telescopic motion of the first connecting rod mechanism and the second connecting rod mechanism is synchronously carried out, and the condition that the pedals arranged on the support are inclined due to the asynchronous telescopic motion of the first connecting rod mechanism and the second connecting rod mechanism is avoided.

Drawings

FIG. 1 is a schematic structural diagram of a pedal retracting mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of the linkage assembly of FIG. 1 in an extended condition;

FIG. 3 is an exploded view of the pedal retraction mechanism of FIG. 1;

FIG. 4 is an exploded view of the connecting rod assembly of FIG. 1;

fig. 5 is a schematic structural diagram of a power assembly according to another embodiment of the present invention.

A power assembly 1; a rotary output shaft 10; a drive gear 11; a driven gear 12; a drive member 13; a power input shaft 14; a worm wheel 15; a base 16;

a connecting rod assembly 2; a first link mechanism 20; a rotating end 201; a first telescoping end 202; a first link 203; a second link 204; a second link mechanism 21; a driven end 211; a second telescoping end 212; a third link 213; a fourth link 214; a clip member 22; an elastic clip portion 221; a card slot 23;

a support 3.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, a pedal retracting mechanism according to an embodiment of the present invention includes a power assembly 1, a link assembly 2, and a bracket 3.

The power assembly 1 comprises a base 16 and a rotary output shaft 10 which is connected to the base 16 in a controlled rotation.

The link assembly 2 includes a first link mechanism 20 and a second link mechanism 21. The first linkage 20 includes opposite rotating end 201 and first telescoping end 202, the rotating end 201 being connected to the rotary output shaft 10. The first telescopic end 202 responds to the rotational movement of the rotating end 201 and outputs a telescopic movement in a first direction. That is, the rotary output shaft 10 rotates the rotary end 201, so as to drive the first telescopic end 202 to extend or retract relative to the rotary end 201 along the first direction.

The second linkage 21 includes opposite driven ends 211 and second telescopic ends 212, the driven ends 211 being rotatably connected to the base 16 and drivingly connected to the rotary output shaft 10. The second telescopic end 212 rotates in response to the rotational movement of the moving end 211 and outputs a telescopic movement in the first direction. That is, the rotating output shaft 10 rotates the driven end 211, so as to drive the second telescopic end 212 to extend or retract relative to the driven end 211 along the first direction.

The bracket 3 is used for mounting a pedal and is connected to the first telescopic end 202 and the second telescopic end 212.

In the actual use process, if the extending or retracting action of the pedal is required, the pedal extending and retracting mechanism firstly drives the rotating output shaft 10 on the base 16 to rotate. Then, the rotating end 201 of the first link mechanism 20 is rotated by the rotating output shaft 10, and the first telescopic end 202 is driven to perform telescopic motion in the first direction. At the same time, the driven end 211 of the second link mechanism 21 is also rotated by the rotating output shaft 10, and the second telescopic end 212 is driven to perform telescopic motion in the second direction. Finally, the bracket 3 moves with the first telescopic end 202 and the second telescopic end 212 to extend or retract the pedal in the first direction.

Thus, the bracket 3 is driven by the first link mechanism 20 and the second link mechanism 21 together to realize the extending and contracting movement of the pedal, so that the driving mode of a single link mechanism of the traditional pedal telescopic mechanism is avoided, and the reliability of the pedal telescopic mechanism is stronger. Further, the first link mechanism 20 and the second link mechanism 21 are driven by the same rotary output shaft 10 as a power source, so that the telescopic motion of the first link mechanism 20 and the second link mechanism 21 is synchronously performed, and the condition that the pedals mounted on the support 3 are inclined due to the asynchronous telescopic motion of the first link mechanism 20 and the second link mechanism 21 is avoided.

The first link mechanism 20 and the second link mechanism 21 may be a multi-link mechanism such as a double link or a four link, and are not limited herein.

Referring to fig. 3 and 4, in some embodiments, the power assembly 1 further includes a driving gear 11, and the driving gear 11 is mounted on the rotary output shaft 10 and rotates synchronously with the rotary output shaft 10. The second linkage 21 further comprises a driven gear 12 fixedly connected to the driven end 211, the driven gear 12 being in mesh with the driving gear 11. In this way, the power transmitted to the rotary output shaft 10 through the driving gear 11 and the driven gear 12 not only can make the motions of the first link mechanism 20 and the second link mechanism 21 more synchronous, but also can realize that the pedal telescopic mechanism can be in a locking state when not in use through the mutual meshing of the driving gear 11 and the driven gear 12 when the rotary output shaft 10 stops power output.

When the pedal retracting mechanism is not in use, if the pedal retracting mechanism receives an external force (e.g., vibration received by the vehicle during driving, pressure generated when a person steps on the pedal, etc.), the rotating end 201 of the first link mechanism 20 and the driven end 211 of the second link mechanism 21 tend to rotate in the direction of the external force under the influence of the external force. However, since the rotation end 201 of the first link mechanism 20 and the driven end 211 of the second link mechanism 21 are engaged with each other through the driving gear 11 and the driven gear 12, as long as the rotation output shaft 10 does not output a rotational motion (i.e., the rotation output shaft 10 does not rotate), an external force cannot rotate the driving gear 11 and the driven gear 12, i.e., the driving gear 11 and the driven gear 12 are locked with each other, so that the pedal connected to the bracket 3 cannot be easily moved. The locking state can further improve the stability of the pedal telescopic mechanism in the actual use process.

In the embodiment, during the rotation of the rotary output shaft 10 to rotate the rotary end 201 and the driven end 211, the connecting rod assembly 2 comprises a retracted state and an extended state. When the linkage assembly 2 is in the retracted state, the first and

second linkages

20, 21 move away from each other to retract the first and second telescoping ends 202, 212 in a first direction relative to the base 16. When the link assembly 2 is in the extended state, the first link mechanism 20 and the second link mechanism 21 move in a direction approaching each other until the first telescopic end 202 and the second telescopic end 212 extend in a first direction relative to the base 16.

In addition, the pedal retracting mechanism is bent in a direction in which the first link mechanism 20 and the second link mechanism 21 are away from each other, so that the space requirement of the first link mechanism 20 and the second link mechanism 21 on the vehicle chassis in the retracted state can be reduced, that is, the pedal retracting mechanism can be accommodated in the vehicle chassis space in a bending manner. When the connecting rod assembly 2 is in the extending state, the first connecting rod mechanism 20 and the second connecting rod mechanism 21 extend towards the same direction, so that the extending speed of the pedal can be faster, and the extending time can be saved.

In some embodiments, the link assembly 2 further includes a snap 22, one of the first link mechanism 20 and the second link mechanism 21 is mounted with the snap 22, and the other of the first link mechanism 20 and the second link mechanism 21 has a snap groove 23. When the connecting rod assembly 2 is in an extending state, the clamping piece 22 is clamped in the clamping groove 23; when the link assembly 2 is in the retracted state, the snap member 22 is disengaged from the snap groove 23.

So, when link assembly 2 was in the state of stretching out, through the joint 22 joint make first link mechanism 20 and second link mechanism 21 lock each other in draw-in groove 23, increase the locking force of first link mechanism 20 and second link mechanism 21 when the state of stretching out, avoid first link mechanism 20 and the contraction swing of second link mechanism 21 under the effect of external force, and then played each motion joint's of protection link assembly 2 effect.

Further, the snap 22 and the snap groove 23 are located inside the first link mechanism 20 and the second link mechanism 21. In this way, when the connecting rod assembly 2 is in the extended state, the first link mechanism 20 and the second link mechanism 21 extend in the first direction and are closed, so that the clamping piece 22 and the clamping groove 23 are clamped between the two. When the link assembly 2 is in the retracted state, the first link mechanism 20 and the second link mechanism 21 are bent in a direction away from each other, so that the catching piece 22 and the catching groove 23 therebetween are separated from each other.

In the embodiment, the clip member 22 has the elastic clip portion 221 for clipping with the clip groove 23, so that the elastic clip portion 221 itself is deformed to clip into or withdraw from the clip groove 23.

In particular embodiments, the first linkage 20 includes a first link 203 and a second link 204. One end of the first link 203 and one end of the second link 204 are hinged to each other, and the other end of the first link 203 serves as a rotating end 201. The other end of the second link 204 serves as the first telescopic end 202 and is hinged to the stand 3. The second link mechanism 21 includes a third link 213 and a fourth link 214. One end of the third link 213 and one end of the fourth link 214 are hinged to each other, and the other end of the third link 213 serves as a driven end 211. The other end of the fourth link 214 serves as a second telescopic end 212 and is hinged to the stand 3.

For convenience of description, an end of the first link 203 to which the second link 204 is hinged is defined as a first end. The end of the second link 204 hinged to the first link 203 is defined as a second end. The end of the third link 213 hinged to the fourth link 214 defines a third end. The end of the fourth link 214 hinged to the third link 213 defines a fourth end.

When the rotating end 201 of the first link 203 rotates, the driven end 211 of the third link 213 also rotates, and the first end of the first link 203 and the third end of the third link 213 move away from or close to each other according to the rotation direction of the rotation output shaft 10. When the first end of the first link 203 and the third end of the third link 213 are close to each other, the first telescopic end 202 of the second link 204 and the fourth end of the fourth link 214 are also close to each other, and because the first telescopic end 202 of the second link 204 and the second telescopic end 212 of the fourth link 214 are both disposed on the bracket 3, the bracket 3 can be far away from the first link 203 along the first direction by the motion characteristic of the link mechanism, and the extending action of the pedal is completed.

When the first end of the first link 203 and the third end of the third link 213 are distant from each other, the bracket 3 approaches the first link 203 in the first direction, thereby completing the retracting action of the pedal.

In the embodiment, one of the first link 203 and the third link 213 is provided with the locking member 22, and the other of the first link 203 and the third link 213 has the locking groove 23.

In actual use, when the link assembly 2 is in the extended state, i.e. the first link 203 and the second link 204 are moved to be located on the same line, and the third link 213 and the fourth link 214 are also moved to be located on the same line, the bracket 3 is moved to the maximum stroke in the first direction. The clamping member 22 is clamped in the clamping groove 23 to bear the force of the connecting rod assembly 2 in the first direction, and the hinged part of the first connecting rod 203 and the second connecting rod 204 and the hinged part of the third connecting rod 213 and the fourth connecting rod 214 are prevented from being damaged.

It should be noted that, in another embodiment, the clip 22 and the clip groove 23 may also be disposed between the second link 204 and the fourth link 214. That is, one of the second link 204 and the fourth link 214 is mounted with the clip 22, and the other of the second link 204 and the fourth link 214 has the clip groove 23. Of course, in another embodiment, the engaging member 22 and the engaging groove 23 are disposed between the first link 203 and the third link 213, and the engaging member 22 and the engaging groove 23 are also disposed between the second link 204 and the fourth link 214, so as to further increase the locking force of the first link mechanism 20 and the second link mechanism 21 in the extended state.

In the embodiment, the power assembly 1 further includes a driving member 13 mounted on the base 16, and the output shaft of the driving member 13 is the rotary output shaft 10. In this embodiment, the rotary output shaft 10 is driven to rotate by a driving member 13 mounted on the base 16. That is, the pedal retracting mechanism in the present embodiment is a powered retracting mechanism. Optionally, the drive 13 is an electric motor.

In other embodiments, referring to fig. 5, the power assembly 1 further comprises a power input shaft 14 connected to the base 16 in a controlled rotation manner, the power input shaft 14 is a worm, the rotary output shaft 10 is provided with a worm wheel 15, and the worm wheel 15 is meshed with the worm. In this embodiment, external power is transmitted to the rotary output shaft 10 through the power input shaft 14 to drive the rotary output shaft 10 to rotate. That is, the pedal retracting mechanism in this embodiment is a non-powered retracting mechanism.

The invention also provides an automobile telescopic pedal which comprises the pedal telescopic mechanism and the pedal in any embodiment. The pedal is arranged on the bracket 3 of the pedal telescopic mechanism, and the pedal is driven to extend or retract by the telescopic action of the pedal telescopic mechanism. Specifically, the pedal telescoping mechanisms comprise two pedal telescoping mechanisms, wherein one pedal telescoping mechanism is a powered telescoping mechanism, and the other pedal telescoping mechanism is a non-powered telescoping mechanism. And the driving piece 13 of the powered telescopic mechanism is connected with the worm of the unpowered telescopic mechanism to drive the worm to rotate, so that the powered telescopic mechanism and the unpowered telescopic mechanism can be synchronously stretched and contracted, the extending and retracting of the pedal can be jointly realized, and the phenomena of pedal deflection and the like caused by the asynchronous action of the two pedal telescopic mechanisms can be avoided.

The pedal retracting mechanism may be used for retracting a pedal of an automobile, but is not limited thereto. With continued reference to fig. 1 and 2, the operation of the pedal retracting mechanism of the present application will be described in detail.

First, when the pedal retracting mechanism is not used, as shown in fig. 1, the link assembly 2 is in a retracted state, the first link 203 and the second link 204 approach each other, the third link 213 and the fourth link 214 approach each other, the link assembly 2 is stored in the bottom of the vehicle, and the pedal is also stored in the bottom of the vehicle together with the bracket 3.

Then, when the pedal retracting mechanism receives an instruction to extend the pedal, the rotary output shaft 10 starts to rotate, and the rotary end 201 of the first link 203 and the driven end 211 of the third link 213 are driven to rotate by the driving gear 11 and the driven gear 12, so that the first end of the first link 203 and the third end of the third link 213 approach each other. Next, the first telescopic end 202 of the second link 204 and the fourth end of the fourth link 214 are close to each other, and through the movement characteristics of the link assembly 2, the first telescopic end 202 of the second link 204 and the second telescopic end 212 of the fourth link 214 drive the bracket 3 and the pedal on the bracket 3 to move in a direction away from the base 16 in the first direction, i.e., extend relative to the base 16.

Finally, when the first link 203 moves to be aligned with the second link 204 and the third link 213 moves to be aligned with the fourth link 214, the link 2 is in an extended state (see fig. 2), and the bracket 3 and the pedal move to the maximum stroke to complete the extending action of the pedal. At this time, the clamping piece 22 between the first link mechanism 20 and the second link mechanism 21 is clamped in the clamping groove 23, so that the first link mechanism 20 and the second link mechanism 21 are connected into a whole, and the stability of the connecting rod assembly 2 is enhanced.

Further, when the pedal retracting mechanism receives a command to retract the pedal, the rotating output shaft 10 rotates in the opposite direction, such that the first end of the first link 203 and the third end of the third link 213 are away from each other, the bracket 3 and the pedal move in the first direction to approach the base 16 (i.e., retract relative to the base 16), and finally, when the link assembly 2 moves to the retracting state, the rotating output shaft 10 stops rotating, and the bracket 3 and the pedal retract to the bottom of the vehicle, thereby completing the retracting action of the pedal.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A pedal retraction mechanism, comprising:

the connecting rod assembly comprises a first connecting rod mechanism and a second connecting rod mechanism, the first connecting rod mechanism comprises a rotating end and a first telescopic end which are opposite, the rotating end is in transmission connection with the rotating output shaft, and the first telescopic end responds to the rotating motion of the rotating end and outputs telescopic motion along a first direction; the second connecting rod mechanism comprises a driven end and a second telescopic end, the driven end is opposite to the second telescopic end, the driven end is rotatably connected to the base and is in transmission connection with the rotary output shaft, and the second telescopic end responds to the rotary motion of the driven section and outputs telescopic motion along a first direction;

and the bracket is used for installing the pedal and is connected with the first telescopic end and the second telescopic end.

2. The pedal retraction mechanism according to claim 1, wherein said power assembly further comprises a drive gear mounted on said rotary output shaft and rotating synchronously with said rotary output shaft;

3. The pedal retraction mechanism according to claim 1, wherein the linkage assembly comprises a retracted state and an extended state during rotation of the rotary output shaft to rotate the rotary end and the driven end;

4. The pedal retraction mechanism according to claim 3, wherein said link assembly further comprises a snap-in member, said snap-in member being mounted to one of said first link mechanism and said second link mechanism, said snap-in member being provided to the other of said first link mechanism and said second link mechanism;

when the connecting rod assembly is in the extending state, the clamping piece is clamped in the clamping groove; when the connecting rod assembly is in the retraction state, the clamping piece is separated from the clamping groove.

5. The pedal retracting mechanism according to claim 4, wherein the engaging member has an elastic engaging portion engaging with the engaging groove.

6. The pedal retracting mechanism according to claim 4, wherein the first link mechanism includes a first link and a second link, one end of the first link and one end of the second link are hinged to each other, the other end of the first link serves as the rotating end, and the other end of the second link serves as the first retracting end and is hinged to the bracket;

7. The pedal retraction mechanism according to claim 6, wherein one of said first link and said third link is provided with said catch, and the other of said first link and said third link is provided with said catch; and/or

8. The pedal retraction mechanism according to claim 1, wherein the power assembly further comprises a drive member mounted to the base, the output shaft of the drive member being the rotary output shaft.

9. The pedal retraction mechanism according to claim 1, wherein the power assembly further comprises a power input shaft connected to the base in a controlled rotatable manner, the power input shaft being a worm, the rotary output shaft being provided with a worm wheel, the worm wheel being engaged with the worm.

10. A retractable step for a motor vehicle, comprising a step retracting mechanism according to any one of claims 1 to 9.