CN114734922A

CN114734922A - Electric pedal for automobile

Info

Publication number: CN114734922A
Application number: CN202210493764.3A
Authority: CN
Inventors: 姚永军; 徐斌; 李妍
Original assignee: SHANGHAI YINGHUI TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: SHANGHAI YINGHUI TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2022-05-08
Filing date: 2022-05-08
Publication date: 2022-07-12

Abstract

The invention relates to an automobile electric pedal. The bicycle comprises an active bracket, a driving mechanism and a pedal, wherein the active bracket and the driving mechanism are both arranged at the same side of the bottom of a bicycle body; the driving bracket comprises a first transmission mechanism and a first connecting rod, and the front end of the first connecting rod is fixedly connected with the pedal; the first transmission mechanism drives the first connecting rod to expand and retract; a driving shaft of the driving mechanism is directly and fixedly connected with the first transmission mechanism and drives the first transmission mechanism to expand and retract so as to expand and retract the first connecting rod; when the first connecting rod is unfolded, the belt pedal moves towards the lower part of the outer side of the vehicle body; when the pedal retracts, the included angle between the upper surface of the pedal and the ground is 3-8 degrees; when unfolded, the upper surface is substantially parallel to the ground. The driving shaft of the driving mechanism is directly connected with the first transmission mechanism of the driving support, the traditional gear transmission mechanism is omitted, the manufacturing cost is reduced, meanwhile, the generation of abnormal sound is reduced, the included angle between the upper surface of the pedal and the ground is 3-8 degrees in the retraction state, no horizontal outward component force is generated, and the pedal can be ensured to be retracted in place.

Description

Electric pedal for automobile

Technical Field

The invention relates to the technical field of automobile pedals, in particular to an automobile electric pedal.

Background

The vehicle step is divided into a fixed step and a retractable step, as the name suggests, the fixed step cannot realize the retractable function of the step, the step always expands the side wall of the vehicle body in the installation state, and the retractable step can realize the functions of the step retracting in the non-use state and the step expanding in the use state due to the retractable supporting structure. The step is located the automobile body lateral part lower extreme and can not protrusion in the automobile body outside when can withdrawing, therefore the vehicle can not cause the collision of step and barrier when passing through narrow highway section, avoids the damage of step.

However, the prior art retractable pedal has many disadvantages and shortcomings due to the unreasonable design of the retractable supporting structure:

1. when the step is in the retraction state, the driven supporting structure falls down or loosens because of not being tightly retracted.

2. The motor output end and the driving shaft are in complex gear transmission, the manufacturing precision is high, the manufacturing precision is difficult to guarantee, the processing cost of a gear transmission mechanism is high, and abnormal sound is easy to occur in the gear transmission.

3. Because of the insecure connection, the driving shaft and the driving arm can slide relatively (mostly, the driving shaft rotates relative to the driving arm), and abnormal sound and noise are generated.

4. The transmission shaft and the connecting piece are fixed by the locking bolt, and the shaft is in clearance fit with the shaft hole, so that a gap exists, vibration and impact are not resisted, and deformation and fracture are generated.

5. The transmission shaft and the corresponding shaft hole are mostly made of iron plated copper shaft sleeves, the lubrication effect is poor after long-term wear, and abnormal sound is generated along with continuous loss of the lubrication effect.

6. The shock pad is installed between first actuating arm and support arm, and the torsion that the drive shaft received is big, and actuating mechanism's stability and life-span are end.

U.S. patent specification (US 10649483B 2) discloses an electric pedal for a vehicle, which has the above-mentioned drawbacks, and needs to be improved.

Disclosure of Invention

The invention aims to provide an automobile electric pedal, which solves the technical problems of the existing automobile electric pedal, a driving shaft of a driving mechanism of the electric pedal is directly connected with a first transmission mechanism of a driving support, a traditional gear transmission mechanism is omitted, the manufacturing cost is reduced, the generation of abnormal sound is reduced, the included angle between the upper surface of the pedal and the ground is 3-8 degrees in a retraction state, no horizontal outward component force is generated, and the pedal can be retracted in place.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides an auto electric footboard, includes an initiative support, a actuating mechanism and a step, initiative support and actuating mechanism all install at the underbody homonymy its characterized in that: the driving bracket comprises a first transmission mechanism and a first connecting rod, and the front end of the first connecting rod is fixedly connected with the pedal; the first transmission mechanism drives the first connecting rod to expand and retract;

the driving shaft of the driving mechanism is directly and fixedly connected with the first transmission mechanism and drives the first transmission mechanism to expand and retract so as to expand and retract the first connecting rod; when the first connecting rod moves from the retraction state to the expansion state, the pedal is driven to move towards the lower part of the outer side of the vehicle body; wherein, the included angle between the upper surface of the pedal in the retraction state and the ground is 3-8 degrees; in the deployed state, its upper surface is substantially parallel to the ground.

The automobile electric pedal is characterized in that: the driving mechanism comprises a driving motor arranged at the bottom of the vehicle body, a gearbox is arranged at the output end of the driving motor, and the gearbox is connected with the first transmission mechanism through a driving shaft.

The automobile electric pedal is characterized in that: the first transmission mechanism comprises a first connecting base, a first driving arm and a first supporting arm; the driving shaft penetrates through the first connecting seat and is fixedly connected with one end of the first driving arm; the other end of the first driving arm is rotatably connected with the first connecting rod; and two ends of the first supporting arm are respectively and rotatably connected with the first connecting base and the first connecting rod.

The automobile electric pedal is characterized in that: the first connecting rod is provided with a connecting lug, the connecting lug is provided with a first shaft hole and a second shaft hole which are perpendicular to the connecting lug, and the axis of the first shaft hole is parallel to the axis of the second shaft hole; the first connecting base is provided with a connecting plate, the connecting plate is provided with a third shaft hole and a fourth shaft hole which are perpendicular to the connecting plate, and the axis of the third shaft hole is parallel to the axis of the fourth shaft hole;

one end of the first supporting arm is fixedly provided with a first transmission shaft, and the other end of the first supporting arm is fixedly provided with a second transmission shaft;

the first transmission shaft on the first support arm is matched with the first shaft hole on the first connecting rod,

the second transmission shaft on the first support arm is matched with the third shaft hole on the first connecting seat;

a third transmission shaft is fixedly arranged at one end of the first driving arm, and the third transmission shaft on the first driving arm is matched with the second shaft hole on the first connecting rod;

the driving shaft is fixedly connected with the other end of the first driving arm, and the driving shaft is matched with a fourth shaft hole in the first connecting base.

The automobile electric pedal is characterized in that: the both ends of first support arm run through the sixth shaft hole that is equipped with fifth shaft hole and secondary drive axle that is used for installing first transmission shaft, the axis in fifth shaft hole is parallel with the axis in sixth shaft hole, the one end of first actuating arm runs through and is equipped with the seventh shaft hole that is used for installing the third transmission shaft, the other end of first actuating arm runs through and is equipped with the eighth shaft hole that is used for installing the drive shaft, the axis in seventh shaft hole is parallel with the axis in eighth shaft hole.

The automobile electric pedal is characterized in that: two ends of the first supporting arm are respectively provided with a transmission shaft rotating device; one end of the first driving arm is provided with a transmission shaft rotating device, and the other end of the first driving arm is provided with a driving shaft locking device.

The automobile electric pedal is characterized in that: the transmission shaft rotating device comprises a shaft sleeve, the two ends of the first transmission shaft, the second transmission shaft and the third transmission shaft are in rotating fit with the shaft sleeve, and the middle section of the first transmission shaft is in interference locking fit with a first shaft hole of the first connecting rod, the middle section of the second transmission shaft is in interference locking fit with a third shaft hole of the first connecting base, and the middle section of the third transmission shaft is in interference locking fit with a second shaft hole of the first connecting rod.

The automobile electric pedal is characterized in that: the driving shaft locking device comprises a first locking bolt and a square fixing block, a flat groove is formed in the middle section of the driving shaft, one end, connected with the driving shaft, of a first driving arm is provided with an eighth shaft hole perpendicular to the driving shaft and a first coaxial through hole, the square fixing block is inserted into the eighth shaft hole from one side of the first driving arm and is matched with the flat groove in the driving shaft, the square fixing block is provided with a first threaded hole coaxial with the square fixing block, and the first locking bolt is inserted into the first through hole from the other side of the first driving arm and is in threaded fit with the first threaded hole.

The automobile electric pedal is characterized in that: the shaft sleeves are arranged in the fifth shaft hole, the sixth shaft hole and the seventh shaft hole, and the shaft sleeves are also arranged in the fourth shaft hole.

The automobile electric pedal is characterized in that: the pedal device also comprises at least one driven bracket, wherein the driven bracket comprises a second transmission mechanism and a second connecting rod, and the front end of the second connecting rod is fixedly connected with the pedal; the driving support drives the second transmission mechanism to synchronously expand and retract through the pedal, so that the second connecting rod synchronously expands and retracts.

The automobile electric pedal is characterized in that: the structure of the driven bracket is consistent with that of the driving bracket, namely the driven bracket is composed of a second connecting base, a second driving arm, a second supporting arm and a second connecting rod, except that a driving mechanism and a driving shaft are not arranged, and a fourth transmission shaft is adopted to replace the driving shaft.

The automobile electric pedal is characterized in that: the first connecting rod and the second connecting rod are provided with sinking grooves towards one sides of the first supporting arm and the second supporting arm, and shock absorption pads are installed in the sinking grooves.

The automobile electric pedal is characterized in that: the pedal is provided with a T-shaped groove, a connecting block with a T-shaped section is arranged in the T-shaped groove, grooves matched with the connecting block are formed in the front ends of the first connecting rod and the second connecting rod, and a second threaded hole used for locking the pedal is formed in the connecting block.

The automobile electric pedal is characterized in that: when the pedal is in the retracted position and the extended position, an acute angle is formed between the upper surface of the pedal and the ground.

The automobile electric pedal is characterized in that: the upper surface of the pedal is inclined inwards by a positive angle of 0-5 degrees.

The invention has the technical scheme, thereby having the following advantages:

1. the invention has a special supporting structure, ensures that the retracted state and the expanded state of the pedal are in a horizontal state or a similar horizontal state, ensures that the pedal can be retracted in place, and avoids the condition that the pedal is expanded in the running process of a vehicle, thereby influencing the trafficability of the vehicle body and generating danger. Particularly, when the pedal is in a retraction state, an included angle between the upper surface of the pedal and the ground is 3-8 degrees, no horizontal outward component force is generated, and the pedal can be ensured to be retracted in place.

2. The output shaft of the driving mechanism in the invention is a driving shaft, replaces a transmission gear transmission mechanism and has a good self-locking function.

3. According to the invention, the driving shaft and the first driving arm are locked through the first locking bolt, so that the flat groove on the driving shaft is tightly pressed by the front side of the square fixing block, and the firmness of connection between the driving shaft and the first driving arm is ensured.

4. In the invention, all the transmission shafts and the corresponding supporting arms or the driving arms are fixed in an interference locking fit manner to be integrated, so that the transmission shafts are firmer than the locking bolts fixed in the shaft holes of the corresponding supporting arms or the driving arms and are more resistant to vibration and impact.

5. In the invention, the shaft sleeves made of special materials are arranged among all the transmission shafts, the driving shaft and the shaft holes, and have good self-lubricating effect, so that abnormal sound caused by poor lubricating effect after long-term use is avoided.

6. According to the invention, the first connecting rod, the second connecting rod and the pedal are fixed through the connecting blocks, the pedal is provided with the T-shaped groove for installing the connecting blocks, the front ends of the first connecting rod and the second connecting rod are respectively provided with the groove matched with the corresponding connecting block, so that the stress between the pedal and the first connecting rod and the stress between the pedal and the second connecting rod are not completely supported by the bolt, the stress is transferred to the outer wall of the connecting blocks, and the connecting blocks can be used for detecting whether the installation positions of the driving support and the driven support are correct or not after auxiliary connection.

Drawings

Fig. 1 is a schematic view showing a retracted state of the active stent of the present invention.

Fig. 2 is a schematic view showing a deployed state of the active stent of the present invention.

Fig. 3 is a schematic perspective exploded view of the electric pedal of the vehicle according to the present invention.

Fig. 4 is a schematic perspective exploded view of the active stent of the present invention.

Fig. 5 is a perspective exploded view of the driven bracket of the present invention.

Fig. 6 is an enlarged schematic view at a in fig. 2.

Figure 7 is a schematic view of the movement of the active stent from the retracted position to the deployed position in the present invention.

In the figure: 1-a vehicle body; 2-an active support; 2 a-first connection mount; 2 b-a first drive arm; 2 c-a first support arm; 2 d-a first link; 3-a driven bracket; 3 a-a second connection mount; 3 b-a second drive arm; 3 c-a second support arm; 3 d-a second link; 4-a drive mechanism; 4 a-a drive motor; 4 b-a gearbox; 4 c-a drive shaft; 4c1, 4c 2-flat slots; 5-stepping; 5 a-T-shaped groove; 6-connecting lugs; 7-ground; 8-connecting plates; 10-a first shaft hole; 11-second shaft hole; 12-third shaft hole; 13-a fourth shaft hole; 14 a-a fifth shaft hole; 14 b-a sixth shaft hole; 15-seventh shaft hole; 16-eighth shaft hole; 18-a first drive shaft; 19-a second drive shaft; 20-a third drive shaft; 21-a fourth drive shaft; 22-shaft sleeve; 23-a first locking bolt; 25-a first threaded hole; 26-a second threaded hole; 27-a first via; 28-the inclination angle is 3-8 degrees; 29-square fixed block; 30-shaft sleeve; 31-a shock pad; a 32-positive inclination angle is 0-5 degrees; 33-connecting block.

Detailed Description

Referring to fig. 1-7, the present invention discloses an electric pedal for a vehicle. As shown in the figure: it includes an initiative support 2, a actuating mechanism 4 and a

step

5, 1 bottom homonymy, its characterized in that are all installed at automobile body to initiative support 2 and actuating mechanism 4: the driving bracket 2 comprises a first transmission mechanism and a first connecting rod 2d, and the front end of the first connecting rod 2d is fixedly connected with the pedal 5; the first transmission mechanism drives the first link 2d to be deployed and retracted; the driving shaft 4c of the driving mechanism 4 is directly and fixedly connected with the first transmission mechanism and drives the first transmission mechanism to expand and retract so as to expand and retract the first connecting rod 2 d; when the first connecting rod 2d moves from the retraction state to the expansion state, the pedal 5 is driven to move towards the lower part of the outer side of the vehicle body 1; wherein, the included angle between the upper surface of the pedal 5 in the retraction state and the ground 7 is 28 degrees; in the deployed state, its upper surface is substantially parallel to the ground 7.

Referring to fig. 1, 2 and 4, in the present invention, the driving mechanism 4 includes a driving motor 4a mounted at the bottom of the vehicle body 1, an output end of the driving motor 4a is mounted with a gear box 4b, and the gear box 4b is connected with the first transmission mechanism through a driving shaft 4 c.

In the present invention, the first transmission mechanism includes a first connection base 2a, a first driving arm 2b, and a first support arm 2 c; the driving shaft 4c penetrates through the first connecting seat 2a and is fixedly connected with one end of the first driving arm 2 b; the other end of the first driving arm 2b is rotatably connected with a first connecting rod 2 d; both ends of the first supporting arm 2c are rotatably connected with the first connecting base 2a and the first link 2d, respectively.

In the invention, the first connecting rod 2d is provided with a connecting lug 6, the connecting lug 6 is provided with a first shaft hole 10 and a second shaft hole 11 which are vertical to the connecting lug 6, and the axis of the first shaft hole 10 is parallel to the axis of the second shaft hole 11; the first connecting base 2a is provided with a connecting plate 8, the connecting plate 8 is provided with a third shaft hole 12 and a fourth shaft hole 13 which are perpendicular to the connecting plate 8, and the axis of the third shaft hole 12 is parallel to the axis of the fourth shaft hole 13; one end of the first supporting arm 2c is fixedly provided with a first transmission shaft 18, and the other end of the first supporting arm is fixedly provided with a second transmission shaft 19; a first transmission shaft 18 on the first support arm 2c is matched with the first shaft hole 10 on the first connecting rod 2d, and a second transmission shaft 19 on the first support arm 2c is matched with the third shaft hole 12 on the first connecting seat 2 a; a third transmission shaft 20 is fixedly arranged at one end of the first driving arm 2b, and the third transmission shaft 20 on the first driving arm 2b is matched with the second shaft hole 11 on the first connecting rod 2 d; the driving shaft 4c is fixedly connected with the other end of the first driving arm 2b, and the driving shaft 4c is matched with a fourth shaft hole 13 on the first connecting base 2 a.

In the present invention, a fifth shaft hole 14a for mounting a first transmission shaft 18 and a sixth shaft hole 14b for mounting a second transmission shaft 19 are formed through both ends of the first support arm 2c, the axis of the fifth shaft hole 14a is parallel to the axis of the sixth shaft hole 14b, a seventh shaft hole 15 for mounting a third transmission shaft 20 is formed through one end of the first drive arm 2b, an eighth shaft hole 16 for mounting a drive shaft 4c is formed through the other end of the first drive arm 2b, and the axis of the seventh shaft hole 15 is parallel to the axis of the eighth shaft hole 16.

In the invention, two ends of the first supporting arm 2c are respectively provided with a transmission shaft rotating device; one end of the first driving arm 2b is provided with a transmission shaft rotating device, and the other end is provided with a driving shaft locking device.

In the invention, the transmission shaft rotating device comprises a shaft sleeve 22, two ends of the first transmission shaft 18, the second transmission shaft 19 and the third transmission shaft 20 are in rotating fit with the shaft sleeve 22, the middle section of the first transmission shaft 18 is in interference lock fit with the first shaft hole 10 of the first connecting rod 2d, the middle section of the second transmission shaft 19 is in interference lock fit with the third shaft hole 12 of the first connecting base 2a, and the middle section of the third transmission shaft 20 is in interference lock fit with the second shaft hole 11 of the first connecting rod 2 d.

In the invention, the driving shaft locking device comprises a first locking bolt 23 and a square fixing block 29, the middle section of the driving shaft 4c is provided with flat grooves 4c1 and 4c2, one end of the first driving arm 2b, which is connected with the driving shaft 4c, is provided with a first through hole 27 which is perpendicular to the eighth shaft hole 16 and coaxial with the eighth shaft hole 16, the square fixing block 29 is inserted into the eighth shaft hole 16 from one side of the first driving arm 2b, the square fixing block 29 is matched with the flat grooves 4c1 and 4c2 on the driving shaft 4c, the square fixing block 29 is provided with a first threaded hole 25 which is coaxial with the square fixing block, and the first locking bolt 23 is inserted into the first through hole 27 from the other side of the first driving arm 2b and is in threaded fit with the first threaded hole 25.

In the present invention, the fifth shaft hole 14a, the sixth shaft hole 14b and the seventh shaft hole 15 are all provided with a shaft sleeve 22, and the fourth shaft hole 13 is also provided with a shaft sleeve 30.

As shown in fig. 3 and 5, the electric pedal for an automobile of the present invention further comprises at least one driven bracket 3, wherein the driven bracket 3 comprises a second transmission mechanism and a second connecting rod 3d, and the front end of the second connecting rod 3d is fixedly connected with the pedal 5; the active bracket 2 drives the second transmission mechanism to synchronously extend and retract through the pedal 5, so that the second connecting rod 3d synchronously extends and retracts.

Referring to fig. 4, the structure of the driven bracket 3 is the same as that of the driving bracket 2, that is, the driven bracket 3 is composed of a second connecting base 3a, a second driving arm 3b, a second supporting arm 3c and a second connecting rod 3d, except that the driving mechanism 4 and the driving shaft 4c are not provided, and the driving shaft 4c is replaced by a fourth transmission shaft 21.

Referring to fig. 6, the first connecting rod 2d and the second connecting rod 3d are provided with sinking grooves on the sides facing the first supporting arm 2c and the second supporting arm 3c, and the shock absorbing pads 31 are installed in the sinking grooves.

Referring to fig. 3, 4 and 5, in the present invention, a T-shaped groove 5a is formed on the step 5, a connecting block 33 with a T-shaped section is installed in the T-shaped groove 5a, grooves matched with the connecting block 33 are formed at the front ends of the first connecting rod 2d and the second connecting rod 3d, and a second threaded hole 26 for locking the step 5 is formed on the connecting block 33.

Preferably, said tread 5 has an acute angle between its upper surface and the ground 7, both in the retracted position and in the extended position.

Preferably, the upper surface of the step 5 is inclined inward by a positive angle of between 0 and 5 degrees 32.

As an embodiment of the electric automobile pedal, the electric automobile pedal has a special supporting structure design, wherein the driving bracket 2 is directly connected with the driving shaft 4c of the driving mechanism 4, namely, the output shaft of the motor is the driving shaft 4c, a gear transmission mechanism is replaced, the defect that abnormal sound is easy to occur when the pedal 5 is driven to zoom through the gear transmission mechanism in transmission is overcome, and the manufacturing cost of the whole automobile pedal is greatly reduced due to the fact that a complex gear transmission mechanism is omitted; a driving motor 4a of the driving mechanism 4 is provided with a gearbox 4b, has a good self-locking function, is matched with a special supporting structure, and ensures that the pedal 5 is always in a horizontal or similar horizontal position in the unfolding and retracting processes, particularly, when the pedal is in a retracting position, an included angle between the upper surface of the pedal 5 and the ground is 3-8 degrees, and a horizontal outward component force cannot be generated, namely, the situation that the pedal 5 cannot be tightly folded due to the horizontal outward component force of the traditional retractable pedal 5 cannot occur, and the phenomenon that the pedal 5 is unfolded or the vehicle body trafficability is influenced and danger is generated due to the fact that the pedal 5 is not tightly folded in the driving process of an automobile is avoided.

In the invention, the driving shaft 4c and the first driving arm 2b are fixedly connected firmly, specifically, the driving shaft locking device is matched with the flat grooves 4c1 and 4c2 arranged on the driving shaft 4c and locked by the first locking bolt 23, so that the front surface of the square fixing block 29 is tightly pressed against the flat grooves 4c1 and 4c2 on the driving shaft 4c, the firmness of connection between the driving shaft 4c and the first driving arm 2b is ensured, and the relative sliding caused by the loose connection between the driving shaft 4c and the first driving arm 2b in the long-term use process is effectively avoided; all the transmission shafts and the corresponding support arms or the corresponding driving arms are fixed through the first locking bolts 23 to be integrated, and the transmission shafts are firmer than the transmission shafts which are simply tightly matched in the shaft holes of the corresponding support arms or the corresponding driving arms; shaft sleeves 22 and 30 made of special materials are arranged between the transmission shafts and the shaft holes and between the driving shaft 4c and the shaft holes, and the shaft sleeves 20 and 30 have good self-lubricating effect, so that abnormal sound caused by poor lubricating effect after long-term use is avoided; the first connecting rod 2d is connected with the pedal 5 through the connecting block 33, so that the stress between the pedal 5 and the first connecting rod 2d is not completely leaned on the bolt, and the stress condition is transferred to the outer wall of the connecting block 33.

In addition, the angle of the upper surface of the pedal 5 in the retracted state and the inward inclination angle of the ground is 3-8 degrees, so that splashed broken stone sundries are prevented from being retained on the pedal in the running process of a vehicle, and sundries are arranged on the pedal when the pedal is unfolded, so that the usability of the pedal is influenced, and the danger is generated by pedaling; the upper surface of the pedal 5 in the retraction state and the ground face inwards incline by a positive angle of 3-8 degrees, the gap between the pedal and the vehicle body is reduced, the pedal 5 in the retraction state is beneficial to hiding the pedal, and the hidden vision of the pedal is better.

The invention adopts a special supporting structure design, the driving bracket 2 is connected with the driving mechanism 4, the driving mechanism 4 drives the driving bracket 2 to retract or unfold, as shown in the state of figure 1, the first driving arm 2b is attached to the first supporting arm 2c, at the moment, the pedal 5 arranged at the front end of the first connecting rod 2d is in a horizontal state or has a small included angle with the horizontal direction, the stress of the first connecting rod 2d is the self gravity and the force which is given by the pedal 5 and is in the vertical downward direction, the stress is in the vertical direction, after the driving bracket 2 retracts to the right position, the influence of the self-locking force of the gearbox 4b is received, the self-locking force of the gearbox 4b cannot be overcome because the force which is not pulled outwards or the force which is pulled is very small, so the risk that the driving bracket 2 unfolds or unfolds to a certain degree does not occur, and the matching gap between the pedal 5 and the vehicle body 1 is basically consistent.

In the invention, the first connecting base 2a, the first connecting rod 2d, the first driving arm 2b and the first supporting arm 2c form a stable four-bar linkage mechanism, and the first connecting rod 2d can be stably unfolded and retracted under the driving of the driving mechanism 4 so as to ensure the postures of the pedals 5 in the retracted and unfolded states, namely ensuring that the upper surface of the pedals 5 is basically parallel to the ground, further ensuring that the force exerted on the first connecting rod 2d by the pedals 5 is downwards vertically or basically downwards vertically in the retracted or unfolded states, and particularly avoiding the situation that the driving support 2 cannot be retracted in place in the retracted state due to the generation of a horizontal outward component force.

In the present invention, both ends of the first support arm 2c are respectively provided with a transmission shaft rotating device, one end of the first drive arm 2b is provided with a transmission shaft rotating device, and the other end is provided with a drive shaft locking device.

It should be emphasized that, since the driving shaft 4c is detachably mounted to the corresponding driving arm, the mounting firmness of the driving shaft 4c directly affects the stability of the operation of the driving bracket 2, and the mounting firmness may cause abnormal noise. Therefore, the drive shaft 4c locking device is provided for the drive shaft 4c in the present invention.

In the invention, as the torque borne by the driving shaft 4c fixedly connected with the first driving arm 2b is far larger than that of other transmission shafts, the locking device of the driving shaft 4c has a firmer locking function relative to the locking device of the transmission shafts, wherein the square fixing block 29 and the first locking bolt 23 are respectively arranged at two sides of the first driving arm 2b, and the front surface of the square fixing block 29 and the flat grooves 4c1 and 4c2 on the driving shaft 4c can be pressed more tightly by locking the first locking bolt 23, so that the driving shaft 4c and the first driving arm 2b are fixed more firmly.

In the present invention, the bushings 22 are provided in the fifth, sixth, and

seventh shaft holes

14a, 14b, and 15, and the bushing 30 is also provided in the fourth shaft hole 13.

When the drive shaft 4c and each drive shaft are engaged with their respective shaft bores, a lubricating medium is typically required to lubricate the shafts and the bores. Because the hole arm and the shaft are both made of metal materials, under the condition of no continuous lubrication medium supplement, the shaft and the shaft hole are abraded due to long-term friction, abnormal sound is generated, if the abrasion resistance of the shaft and the shaft hole is improved, special abrasion resistance treatment is required, the manufacturing process is more complicated, and the manufacturing cost is relatively increased. Therefore, the shaft sleeve 22 and the shaft sleeve 30 are respectively arranged in all the shaft holes, the shaft sleeve 22 and the shaft sleeve 30 are made of special materials with self-lubricating function, and the shaft sleeve 22 and the shaft sleeve 30 are relatively small in parts and can be made of different materials with other parts, so that the manufacturing and processing are easy, and the cost is greatly reduced.

In the present invention, the first connecting rod 2d and the second connecting rod 3d are provided with sinking grooves on the sides facing the first supporting arm 2c and the second supporting arm 3c, and the shock absorbing pads 31 are installed in the sinking grooves.

It should be noted that the active bracket 2 should have good stability when the step 5 stays in the retracted position or the deployed position, and should minimize the collision and impact between the components when the retracted position or the deployed position is reached. The shock absorbing pad 31 is installed inside the first link 2d, specifically, on the side toward the first support arm 2 c. When the pedal 5 is in the fully-unfolded position, the first support arm 2C compresses the shock pad 31, at the moment, the first connecting rod 2d, the shock pad 31 and the first support arm 2C are tightly attached, so that the driving support 2 is in the unfolded positioning state to achieve self-locking, the shock pad 31 ensures that the first connecting rod 2d and the first support arm 2C are tightly attached, the collision between the first support arm 2C and the first connecting rod 2d is reduced, when the pedal is trampled for use, the downwards trampled gravity is decomposed into the first connecting rod 2d and the first support arm 2C to bear, the stress of the first driving arm 2b is reduced, the torsion received by the driving shaft 4C of the first driving arm 2b is reduced, and the stability and the service life of the driving mechanism 4 are improved. When the pedal 5 retracts, the shock absorbing pad 31 on the first connecting rod 2d is compressed by the first driving arm 2b, and the three are tightly attached to make the driving bracket 2 in another positioning state.

The driving support 2 should have good stability when the pedal 5 is unfolded, and should have a self-locking function when arriving the unfolded position, specifically, when the pedal 5 is in the completely unfolded position, the first supporting arm 2c compresses the shock pad 31, at this moment, the first connecting rod 2d, the shock pad 31 and the first supporting arm 2c three are tightly attached, so that the driving support 2 and the driven support 3 are in the unfolded positioning state to achieve self-locking, a self-locking mechanism is formed at the corresponding position of the shock pad 31, and the self-locking state is realized for a user to tread an electric side pedal.

In the invention, a T-shaped groove 5a is arranged on the pedal 5, a connecting block 33 with a T-shaped section is arranged in the T-shaped groove 5a, grooves matched with the connecting block 33 are arranged at the front ends of the first connecting rod 2d and the second connecting rod 3d, and a second threaded hole 26 used for locking the pedal 5 is arranged on the connecting block 33.

The first connecting rod 2d is connected with the pedal 5 through the connecting block 33, so that the stress between the pedal 5 and the first connecting rod 2d is not completely leaned on the bolt, and the stress condition is transferred to the outer wall of the connecting block 33.

The angle of the upper surface of the pedal 5, which is inclined inwards to the ground in the retracted state, is 3-8 degrees, and the upper surface of the pedal is basically parallel to the ground in the expanded state.

Ideally, the upper surface of the step 5 is kept horizontal to the ground when the step is at the retracted position or the extended position, and particularly, the acting force applied to the first link 2d by the step 5 when the step is at the retracted position can be kept vertically downward, so that no outward horizontal component force is generated, and the active bracket 2 is ensured to be tightened.

Preferably, the step 5 has an acute angle between its upper surface and the ground when in the retracted position and the extended position.

The upper surface of the footrest 5 may be at a small angle to the ground in the retracted and deployed positions without affecting use.

More specifically, the step 5 has an upper surface of the step 5 that is inclined inward by a positive angle of 3 to 8 degrees in the retracted position and an upper surface of the step 5 that is inclined inward by a positive angle of 0 to 5 degrees in the deployed position.

In order to ensure the reliability of the step 5, the inclination of the upper surface of the step 5 is preferably inward-inclined, so that when the sole of the user is wet and slippery, the step 5 will not fall down because the outward-inclined upper surface of the step 5 is positive, and in order to ensure the aesthetic appearance of the unfolded state of the step 5, i.e., the inclination angle of the step 5 is not too large to affect the appearance of the whole vehicle, the inward-inclined angle of the upper surface of the step 5 should be as small as possible, and in this embodiment, the inclination angle is preferably between 0 and 5 degrees.

In another embodiment of the invention, the automobile pedal has a special supporting structure design, wherein the driving bracket 2 is directly connected with the driving shaft 4c of the driving mechanism 4, namely, the output shaft of the motor is the driving shaft 4c, so that a gear transmission mechanism is replaced, the defect that abnormal sound is easy to occur when the pedal 5 is driven to zoom through the gear transmission mechanism in transmission is overcome, and the manufacturing cost of the whole automobile pedal 5 is greatly reduced due to the omission of a complex gear transmission mechanism; a driving motor 4a of the driving mechanism 4 is provided with a gearbox 4b, has a good self-locking function, is matched with a special supporting structure, and ensures that the pedal is always in a horizontal or similar horizontal position in the unfolding and retracting processes, particularly when the pedal is in the horizontal position in the retracting position, the acting force applied to the supporting structure by the self weight of the pedal cannot generate a horizontal outward component force, namely the situation that the pedal 5 cannot be tightly folded due to the horizontal outward component force of the traditional retractable pedal 5 cannot occur, and the problem that the pedal 5 is unfolded due to the untightening in the automobile driving process, so that the vehicle body trafficability is influenced and danger is generated is avoided.

The driving shaft 4c is firmly fixedly connected with the first driving arm 2b, specifically, the driving shaft locking device is matched with the flat grooves 4c1 and 4c2 arranged on the driving shaft 4c and is locked by the first locking bolt 23, so that the front surface of the square fixing block 29 presses the flat grooves 4c1 and 4c2 on the driving shaft 4c, the firmness of connection between the driving shaft 4c and the first driving arm 2b is ensured, and the relative sliding caused by the loose connection between the driving shaft 4c and the first driving arm 2b in the long-term use process is effectively avoided; all the transmission shafts and the corresponding support arms or the corresponding driving arms are fixed through the first locking bolts 23 to be integrated, and the transmission shafts are firmer than the transmission shafts which are simply tightly matched in the shaft holes of the corresponding support arms or the corresponding driving arms; shaft sleeves 22 and 30 made of special materials are respectively arranged between all the transmission shafts and the shaft holes and between the driving shaft 4c and the shaft holes, and the shaft sleeves 22 and the shaft sleeves 30 have good self-lubricating effects, so that abnormal sound caused by poor lubricating effects after long-term use is avoided; the first connecting rod 2d, the second connecting rod 3d and the pedal 5 are connected through the connecting block 33, so that the stress between the pedal 5 and the first connecting rod 2d and the second connecting rod is not completely supported by bolts, the stress condition is transferred to the outer wall of the connecting block 33, and after the connecting block 33 is adopted for auxiliary connection, whether the installation positions of the driving support 2 and the driven support 3 are correct or not can be detected, for example, the first connecting rod 2d on the driving support 2 is connected with the pedal 5, if the groove on the second connecting rod 3d cannot be matched with the connecting block 33 at the corresponding position, the installation deviation of the driven support 3 and the driving support 2 is explained, and vice versa.

The embodiment also comprises at least one driven bracket 3, the driven bracket 3 comprises a second transmission mechanism and a second connecting rod 3d, and the front end of the second connecting rod 3d is fixedly connected with the pedal 5; the driving bracket 2 drives the second transmission mechanism to synchronously unfold and fold through the pedal 5, so that the second connecting rod 3d synchronously unfolds and retracts.

It should be noted that the present invention adopts a special supporting structure design, namely, a driving support 2 and a driven support 3, wherein the driving support 2 is connected to a driving mechanism 4, the driving mechanism 4 drives the driving support 2 to retract or extend, so as to drive the driven support 3 to synchronously move relative to the driving support 2 through a pedal 5, as shown in the state of fig. 1, taking the driving support 2 as an example: the first driving arm 2b is attached to the first supporting arm 2c, the pedal arranged at the front end of the first connecting rod 2d is in a horizontal state or has a small included angle with the horizontal direction, the stress of the first connecting rod 2d is self gravity and the force of the pedal 5 in the vertical downward direction, the stress is in the vertical direction, when the driving support 2 retracts in place, the driven support 3 retracts in place under the traction force of the pedal and is influenced by the self-locking force of the gearbox 4b, and the risk that the driving support 2 and the driven support 3 are unfolded or unfolded to a certain degree cannot occur due to the fact that the force of pulling outwards or the force of pulling is very small and is not enough to overcome the self-locking force of the gearbox 4b, and the fit clearance between the pedal 5 and the vehicle body 1 is basically consistent;

it should be noted that the number of the driven brackets 3 is determined according to the length of the foot rest 5 in the actual vehicle type, and a double support structure of one driving bracket 2 and one driven bracket 3 is generally adopted when the foot rest 5 is relatively long, and a multiple support structure of one driving bracket 2 and a plurality of driven brackets 3 may also be adopted.

The driving mechanism 4 comprises a driving motor 4a mounted at the bottom of the vehicle body 1, the output end of the driving motor 4a is provided with a gear box 4b, and a driving shaft 4c of the gear box 4b is connected with the first transmission mechanism.

The driving shaft 4c of the gearbox 4b is directly connected with the first transmission mechanism, so that a complex gear transmission mechanism is omitted, and the manufacturing cost is reduced.

The first transmission mechanism includes a first connection base 2a, a first driving arm 2b, and a first support arm 2 c; the driving shaft 4c penetrates through the first connecting seat and is fixedly connected with one end of the first driving arm 2 b; the other end of the first driving arm 2b is rotatably connected with a first link 2 d; both ends of the first support arm 2c are rotatably connected with the first connection base 2a and the first link 2d, respectively; the second transmission mechanism comprises a second connecting base 3a, a second driving arm 3b and a second supporting arm 3c, and two ends of the second driving arm 3b are respectively connected with the second connecting base 3a and a second connecting rod 3d in a rotating manner; both ends of the second support arm 3c are rotatably connected to the second connection base 3a and the second link 3d, respectively.

The first connecting rod 2d and the second connecting rod 3d are both provided with a connecting lug 6, the connecting lug 6 is provided with a first shaft hole 10 and a second shaft hole 11 which are perpendicular to the connecting lug 6, and the axis of the first shaft hole 10 is parallel to the axis of the second shaft hole 11; the first connecting base 2a and the second connecting base 3a are both provided with a connecting plate 8, the connecting plate 8 is provided with a third shaft hole 12 and a fourth shaft hole 13 which are perpendicular to the connecting plate 8, and the axis of the third shaft hole 12 is parallel to the axis of the fourth shaft hole 13; one end of each of the first support arm 2c and the second support arm 3c is fixedly provided with a first transmission shaft 18, the other end of each of the first support arm 2c and the second support arm 3c is fixedly provided with a second transmission shaft 19, the first transmission shaft 18 on the first support arm 2c is matched with the first shaft hole 10 on the first connecting rod 2d, the second transmission shaft 19 on the first support arm 2c is matched with the third shaft hole 12 on the first connecting seat, the first transmission shaft 18 on the second support arm 3c is matched with the first shaft hole 10 on the second connecting rod 3d, and the second transmission shaft 19 on the second support arm 3c is matched with the third shaft hole 12 on the second connecting seat; one end of each of the first driving arm 2b and the second driving arm 3b is fixedly provided with a third transmission shaft 20, the third transmission shaft 20 on the first driving arm 2b is matched with the second shaft hole 11 on the first connecting rod 2d, and the third transmission shaft 20 on the second driving arm 3b is matched with the second shaft hole 11 on the second connecting rod 3 d; the driving shaft 4c is fixedly connected with the other end of the first driving arm 2b, the driving shaft 4c is matched with a fourth shaft hole 13 on the first connecting base 2a, the other end of the second driving arm 3b is fixedly provided with a fourth transmission shaft 21, and two ends of the fourth transmission shaft 21 are matched with the fourth shaft hole 13 on the second connecting base 3 a.

The first connecting base 2a, the first connecting rod 2d, the first driving arm 2b and the first supporting arm 2c form a stable four-bar linkage mechanism, and the first connecting rod 2d can be stably unfolded and retracted under the driving of the driving mechanism 4, so as to ensure the postures of the pedals 5 in the retracted and unfolded states, namely ensure that the upper surface of each pedal 5 is basically parallel to the ground, further ensure that the force exerted on the first connecting rod 2d by each pedal 5 in the retracted or unfolded state is vertically downward or basically vertically downward, and particularly avoid the situation that the driving support 2 cannot be retracted in place in the retracted state due to the generation of a horizontal outward component force. Similarly, the second connecting base 3a, the second link 3d, the second driving arm 3b and the second supporting arm 3c form a stable four-bar linkage mechanism, and since no component force horizontally outward is generated on the second link 3d when the pedal is in the retracted or extended state, the self-locking force of the transmission case 4b on the driving bracket 2 is sufficient to ensure that the driven bracket 3 can be retracted.

The first support arm 2c and the second support arm 3c are provided at both ends thereof with a fifth shaft hole 14a for mounting a first transmission shaft 18 and a sixth shaft hole 14b for mounting a second transmission shaft 19, one ends of the first drive arm 2b and the second drive arm 3b are provided with a seventh shaft hole 15 for mounting a third transmission shaft 20, the other end of the first drive arm 2b is provided with an eighth shaft hole 16 for mounting a drive shaft 4c, and the other end of the second drive arm 3b is provided with an eighth shaft hole 16 for mounting a fourth transmission shaft 21.

Two ends of the first support arm 2c are respectively provided with a transmission shaft rotating device, one end of the first drive arm 2b is provided with a transmission shaft rotating device, and the other end is provided with a drive shaft locking device.

The driving shaft locking device comprises a first locking bolt 23 and a square fixing block 29, a flat groove 4c 14 c2 is formed in the middle section of the driving shaft 4c, an eighth shaft hole 16 perpendicular to the driving shaft 4c and a coaxial first through hole 27 are formed in one end, connected with the driving shaft 4c, of the first driving arm 2b, the square fixing block 29 is inserted into the circular shaft hole from one side of the first driving arm 2b, the square positioning block is matched with the flat grooves 4c1 and 4c2 of the driving shaft 4c, the square fixing block 29 is provided with a first threaded hole 25 coaxial with the square fixing block, and the first locking bolt 23 is inserted into the first through hole 27 from the other side of the first driving arm 2b and is in threaded fit with the first threaded hole 25.

Because the torque borne by the driving shaft 4c after being fixedly connected with the first driving arm 2b is far larger than that of other transmission shafts, the driving shaft 4c locking device has a firmer locking function relative to the transmission shaft locking device, wherein the square fixing block 29 and the second locking bolt 23 are respectively installed on two sides of the first driving arm 2b, the front surface of the square fixing block 29 and the flat grooves 4c1 and 4c2 on the driving shaft 4c can be pressed more tightly by locking the first locking bolt 23, and the driving shaft 4c and the first driving arm 2b are fixed firmer.

The fifth shaft hole 14a, the sixth shaft hole 14b, and the seventh shaft hole 15 are provided with bushings 22, and the fourth shaft hole 13 is also provided with a bushing 30.

When the drive shaft 4c and each drive shaft cooperate with a corresponding shaft bore, a lubricating medium is typically required to lubricate the shaft and bore. Because the hole arm and the shaft are both made of metal materials, under the condition of no continuous lubrication medium supplement, the shaft and the shaft hole are abraded due to long-term friction, abnormal sound is generated, if the abrasion resistance of the shaft and the shaft hole is improved, special abrasion resistance treatment is required, the manufacturing process is more complicated, and the manufacturing cost is relatively increased. Therefore, the shaft sleeve 22 and the shaft sleeve 30 are respectively arranged in all the shaft holes, the shaft sleeve 22 and the shaft sleeve 30 are made of special materials with self-lubricating effect, and the shaft sleeve 22 and the shaft sleeve 30 are relatively small in parts and can be made of different materials with other parts, so that the manufacturing and processing are easy, and a large amount of cost is reduced.

The first connecting rod 2d and the second connecting rod 3d are provided with sinking grooves towards the first supporting arm 2c and the second supporting arm 3c, and shock absorbing pads 31 are installed in the sinking grooves.

It should be noted that the active bracket 2 should have good stability when the step 5 stays in the retracted position or the deployed position, and should minimize the collision and impact between the components when the retracted position or the deployed position is reached. A shock absorbing pad 31 is installed inside the first link 2d, specifically, on the side toward the first support arm 2 c. When the pedal 5 is in the fully-unfolded position, the first support arm 2C compresses the shock-absorbing pad 31, at this time, the first connecting rod 2d, the shock-absorbing pad 31 and the first support arm 2C are tightly attached, so that self-locking is achieved when the driving support 2 is in the unfolded positioning state, the shock-absorbing pad 31 ensures that the first connecting rod 2d and the first support arm 2C are tightly attached, meanwhile, the collision between the first support arm 2C and the first connecting rod 2d is reduced, when the pedal is trampled and used, the gravity trampled downwards is decomposed into the first connecting rod 2d and the first support arm 2C to bear, the stress of the first driving arm 2b is reduced, the torsion borne by the driving shaft 4C of the first driving arm 2b is reduced, the stability and the service life of the driving mechanism 4 are improved, when the pedal 5 retracts, the shock-absorbing pad 31 on the first connecting rod 2d is also compressed by the first driving arm 2b and the three are tightly attached, the active stent 2 is put in another positioning state.

Initiative support 2 and driven support 3 should have good stability when step 5 expandes the position, and should have self-locking function when reacing the expansion position, specifically be in when step 5 is in the complete expansion position, first support arm 2c compresses shock pad 31, first connecting rod 2d this moment, shock pad 31 and the inseparable laminating of first support arm 2c three, make initiative support 2 and driven support 3 reach the auto-lock when being in the expansion orientation state, form a self-locking mechanism in the corresponding position of shock pad 31, it tramples electronic sidestep to realize the auto-lock state and supply the user.

The pedal 5 is provided with a T-shaped groove 5a, a connecting block 33 with a T-shaped section is installed in the T-shaped groove 5a, grooves matched with the connecting block 33 are formed in the front ends of the first connecting rod 2d and the second connecting rod 3d, and a second threaded hole 26 used for locking the pedal 5 is formed in the connecting block 33.

The first connecting rod 2d and the second connecting rod 3d are connected with the pedal 5 through the connecting block 33, so that the stress between the pedal 5 and the first connecting rod 2d and the second connecting rod is not completely supported by bolts, the stress condition is transferred to the outer wall of the connecting block 33, and after the connecting block 33 is adopted for auxiliary connection, whether the mounting positions of the driving support 2 and the driven support 3 are correct or not can be detected, for example, the first connecting rod 2d on the driving support 2 is connected with the pedal 5, if the groove on the second connecting rod 3d cannot be matched with the connecting block 33 at the corresponding position, the mounting deviation of the driven support 3 and the driving support 2 is indicated, and vice versa.

The angle of the upper surface of the pedal 5, which is inclined inward toward the ground in the retracted state, is 3 to 8 degrees, and the upper surface of the pedal is substantially parallel to the ground in the deployed state.

Ideally, the upper surface of the step 5 is kept horizontal to the ground when the step 5 is in the retracted position or in the deployed position, and particularly, the acting force applied to the first link 2d and the second link 3d by the step 5 when the step is externally retracted can be kept vertically downward, so that no outward horizontal component force is generated, and the active bracket 2 is ensured to be tightened.

The tread 5 has an acute angle between its upper surface and the ground when in the retracted position and in the extended position.

More specifically, in the retracted position of the step 5, the upper surface of the step 5 is inclined inward by a positive angle of 3 to 8 degrees, and in the extended position, the upper surface of the step 5 is inclined inward by a positive angle of 0 to 5 degrees.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.

Claims

1. The utility model provides an auto electric footboard, includes an initiative support (2), a actuating mechanism (4) and a step (5), the homonymy in automobile body (1) bottom is all installed to initiative support (2) and actuating mechanism (4), its characterized in that: the driving support (2) comprises a first transmission mechanism and a first connecting rod (2 d), and the front end of the first connecting rod (2 d) is fixedly connected with the pedal (5); the first transmission mechanism drives the first connecting rod (2 d) to be unfolded and retracted;

a driving shaft (4 c) of the driving mechanism (4) is directly and fixedly connected with the first transmission mechanism and drives the first transmission mechanism to expand and retract so as to expand and retract the first connecting rod (2 d); when the first connecting rod (2 d) moves from the retraction state to the expansion state, the pedal (5) is driven to move towards the lower part of the outer side of the vehicle body (1); wherein, the included angle between the upper surface of the pedal (5) and the ground (7) is 3-8 degrees (28) in the retracted state; in the unfolded state, the upper surface is substantially parallel to the ground (7).

2. The automotive electric pedal according to claim 1, characterized in that: the driving mechanism (4) comprises a driving motor (4 a) installed at the bottom of the vehicle body (1), a gearbox (4 b) is installed at the output end of the driving motor (4 a), and the gearbox (4 b) is connected with the first transmission mechanism through a driving shaft (4 c).

3. The automotive electric pedal according to claim 2, characterized in that: the first transmission mechanism comprises a first connecting base (2 a), a first driving arm (2 b) and a first supporting arm (2 c); the driving shaft (4 c) penetrates through the first connecting seat (2 a) and is fixedly connected with one end of the first driving arm (2 b); the other end of the first driving arm (2 b) is rotationally connected with a first connecting rod (2 d); two ends of the first supporting arm (2 c) are respectively and rotatably connected with the first connecting base (2 a) and the first connecting rod (2 d).

4. The automotive electric pedal according to claim 3, characterized in that: the first connecting rod (2 d) is provided with a connecting lug (6), the connecting lug (6) is provided with a first shaft hole (10) and a second shaft hole (11) which are perpendicular to the connecting lug (6), and the axis of the first shaft hole (10) is parallel to the axis of the second shaft hole (11); the first connecting base (2 a) is provided with a connecting plate (8), the connecting plate (8) is provided with a third shaft hole (12) and a fourth shaft hole (13) which are perpendicular to the connecting plate (8), and the axis of the third shaft hole (12) is parallel to the axis of the fourth shaft hole (13);

one end of the first supporting arm (2 c) is fixedly provided with a first transmission shaft (18), and the other end is fixedly provided with a second transmission shaft (19);

a first transmission shaft (18) on the first supporting arm (2 c) is matched with a first shaft hole (10) on the first connecting rod (2 d),

a second transmission shaft (19) on the first support arm (2 c) is matched with a third shaft hole (12) on the first connecting seat (2 a);

a third transmission shaft (20) is fixedly arranged at one end of the first driving arm (2 b), and the third transmission shaft (20) on the first driving arm (2 b) is matched with a second shaft hole (11) on the first connecting rod (2 d);

the driving shaft (4 c) is fixedly connected with the other end of the first driving arm (2 b), and the driving shaft (4 c) is matched with a fourth shaft hole (13) in the first connecting base (2 a).

5. The automotive electric pedal according to claim 4, characterized in that: the both ends of first support arm (2 c) are run through and are equipped with sixth shaft hole (14 b) that are used for installing fifth shaft hole (14 a) and second transmission shaft (19) of first transmission shaft (18), the axis in fifth shaft hole (14 a) and the axis in sixth shaft hole (14 b) are parallel, the one end of first actuating arm (2 b) is run through and is equipped with seventh shaft hole (15) that are used for installing third transmission shaft (20), the other end of first actuating arm (2 b) is run through and is equipped with eighth shaft hole (16) that are used for installing drive shaft (4 c), the axis in seventh shaft hole (15) and the axis in eighth shaft hole (16) are parallel.

6. The automotive electric pedal according to claim 5, characterized in that: two ends of the first supporting arm (2 c) are respectively provided with a transmission shaft rotating device; one end of the first driving arm (2 b) is provided with a transmission shaft rotating device, and the other end of the first driving arm is provided with a driving shaft locking device.

7. The automotive electric pedal according to claim 6, characterized in that: the transmission shaft rotating device comprises a shaft sleeve (22), the two ends of the first transmission shaft (18), the second transmission shaft (19) and the third transmission shaft (20) are in rotation fit with the shaft sleeve (22), the middle section of the first transmission shaft (18) is in interference locking fit with the first shaft hole (10) of the first connecting rod (2 d), the middle section of the second transmission shaft (19) is in interference locking fit with the third shaft hole (12) of the first connecting base (2 a), and the middle section of the third transmission shaft (20) is in interference locking fit with the second shaft hole (11) of the first connecting rod (2 d).

8. The automotive electric pedal according to claim 6, characterized in that: the driving shaft locking device comprises a first locking bolt (23) and a square fixing block (29), a flat groove (4 c1, 4c 2) is formed in the middle section of the driving shaft (4 c), one end, connected with the driving shaft (4 c), of the first driving arm (2 b) is provided with a first through hole (27) which is perpendicular to an eighth shaft hole (16) and coaxial with the eighth shaft hole, the square fixing block (29) is inserted into the eighth shaft hole (16) from one side of the first driving arm (2 b), the square fixing block (29) is matched with the flat groove (4 c1, 4c 2) of the driving shaft (4 c), a first threaded hole (25) coaxial with the square fixing block (29) is formed in the square fixing block (29), and the first locking bolt (23) is inserted into the first through hole (27) from the other side of the first driving arm (2 b) and is in threaded fit with the first threaded hole (25).

9. The automotive electric pedal according to claim 6, characterized in that: shaft sleeves (22) are arranged in the fifth shaft hole (14 a), the sixth shaft hole (14 b) and the seventh shaft hole (15), and shaft sleeves (30) are also arranged in the fourth shaft hole (13).

10. An automotive electric pedal according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that: the pedal device is characterized by further comprising at least one driven bracket (3), wherein the driven bracket (3) comprises a second transmission mechanism and a second connecting rod (3 d), and the front end of the second connecting rod (3 d) is fixedly connected with the pedal (5); the driving support (2) drives the second transmission mechanism to synchronously unfold and retract through the pedal (5), so that the second connecting rod (3 d) synchronously unfolds and retracts.

11. The automotive electric pedal as set forth in claim 10, characterized in that: the structure of the driven bracket (3) is consistent with that of the driving bracket (2), namely the driven bracket (3) is composed of a second connecting base (3 a), a second driving arm (3 b), a second supporting arm (3 c) and a second connecting rod (3 d), except that a driving mechanism (4) and a driving shaft (4 c) are not arranged, and a fourth transmission shaft (21) is adopted to replace the driving shaft (4 c).

12. The automotive electric pedal as set forth in claim 11, characterized in that: the first connecting rod (2 d) and the second connecting rod (3 d) are provided with sinking grooves towards one sides of the first supporting arm (2 c) and the second supporting arm (3 c), and shock absorption pads (31) are installed in the sinking grooves.

13. The automotive electric pedal according to claim 10, characterized in that: the pedal (5) is provided with a T-shaped groove (5 a), a connecting block (33) with a T-shaped section is installed in the T-shaped groove (5 a), grooves matched with the connecting block (33) are formed in the front ends of the first connecting rod (2 d) and the second connecting rod (3 d), and a second threaded hole (26) used for locking the pedal (5) is formed in the connecting block (33).

14. The automotive electric pedal according to claim 10, characterized in that: the upper surface of the pedal (5) forms an acute angle with the ground (7) when the pedal is in the retracted position and the extended position.

15. The automotive electric pedal according to claim 10, characterized in that: the angle of the inward inclination of the upper surface of the pedal (5) is between 0 and 5 degrees (32).