Electronic brake pedal

Abstract

The present invention provides an electronic brake pedal, which belongs to the technical field of vehicle electric brake system. It solves the problems of insufficient braking safety of existing electronic brake pedals. The electronic brake pedal includes a shell, a magnetic field sensor and a magnet that can be sensed by the magnetic field sensor. The top of the shell is hinged with a plate body, and a push rod that can slide up and down is inserted into the shell. The push rod is connected with an elastic member that makes the top of the push rod abut against the plate body. The push rod is fixedly connected with a mounting seat. An integrated block in the shape of a "concave" is fixed in the shell. The integrated block includes two lugs protruding toward the mounting seat and distributed in the circumferential direction of the push rod. A magnetic field sensor is fixed on at least one lug. The mounting seat has an induction part protruding and inserted between the two lugs. The magnet is fixed on the induction part, and the elastic member is located below or above the mounting seat. The electronic brake pedal improves the safety of braking.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle electric brake systems and relates to an electronic brake pedal. Background Art

[0002] The braking system refers to a system that forcibly reduces the speed of a sports device. The vehicle's braking system includes pedals, boosters, brake pumps, and brakes, among which the pedals are divided into mechanical brake pedals and electronic brake pedals. With the development of new energy vehicles, electronic brake pedals are widely used in hybrid electric vehicles and pure electric vehicles.

[0003] For example, a commercial vehicle brake foot valve and commercial vehicle brake system disclosed in Chinese patent literature [Announcement No.: CN218085484U], the commercial vehicle brake foot valve includes a brake pedal, a power supply, a mechanical brake circuit, a magnetic sensor and a brake quantity output circuit; the brake pedal is connected to the mechanical brake circuit, and the power supply is respectively connected to the mechanical brake circuit, the magnetic sensor and the brake quantity output circuit; a magnet that moves with the pedaling is arranged in the brake pedal, and the magnetic sensor is arranged around the magnet; the magnetic sensor is connected to the brake quantity output circuit, and the brake quantity signal output by the brake quantity output circuit changes with the change of the magnetic field strength monitored by the magnetic sensor.

[0004] In the above-mentioned brake foot valve, the brake pedal includes a plate body, a rod body and a spring, the magnet is fixed in the rod body, the spring is sleeved on the outside of the rod body, and the magnetic sensor is located on the outside of the spring. When braking, the plate body rotates to drive the rod body to move downward, the spring is compressed, and the magnet moves downward with the rod body, so that the magnetic field strength at the location of the magnetic sensor changes, and the braking amount signal output by the braking amount output circuit changes accordingly. The controller receives the braking amount signal and calculates the rod body stroke according to a preset formula, and then controls the braking system to output the corresponding braking force according to the calculated rod body stroke. However, since the spring is located between the magnet and the magnetic sensor, and the expansion and contraction of the spring will also cause the change of the magnetic field distribution, which will cause the actual magnetic field strength sensed by the magnetic sensor to be slightly different from the theoretical magnetic field strength, that is, the braking amount signal received by the controller is a signal after interference, so that the rod body downward movement stroke calculated by the controller according to the braking amount signal is different from the actual downward movement stroke of the rod body, resulting in a deviation in the braking force output by the braking system, thereby affecting the braking safety. In order to improve the braking safety, the usual practice is to select a non-magnetic spring. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose an electronic brake pedal, the technical problem to be solved is how to improve braking safety.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An electronic brake pedal comprises a shell, a magnetic field sensor and a magnet that can be sensed by the magnetic field sensor, wherein a plate body is hinged on the top end of the shell, a push rod that can slide up and down is passed through the shell, and an elastic member is connected to the push rod so that the top end of the push rod abuts against the plate body. The invention is characterized in that a mounting seat is fixedly connected to the push rod, and an integrated block in the shape of a "concave" character is fixed in the shell, the integrated block comprises two lugs that protrude toward the mounting seat and are distributed in the circumferential direction of the push rod, the magnetic field sensor is fixed on at least one lug, the mounting seat has a protruding induction portion that is inserted between the two lugs, the magnet is fixed on the induction portion, and the elastic member is located below or above the mounting seat.

[0008] During braking, the plate body swings downward to drive the push rod to move downward, and the mounting seat fixed on the push rod moves downward synchronously, and the downward movement of the magnet causes the magnetic field sensor to sense a change in the magnetic field strength, and the signal output by the magnetic field sensor changes accordingly, and the braking force generated by the braking system changes accordingly. Since the integrated block is concave, the sensing portion where the magnet is located is inserted between the two lugs of the integrated block, and the elastic member is located below or above the mounting seat, so that the magnetic field sensor on the lug is close to the magnet and there are no other parts between the magnetic field sensor and the magnet, and the closer to the magnet, the greater the magnetic field strength, and the more obvious and accurate the magnetic field change sensed when the magnet moves, so this setting not only makes the magnetic field sensor close to the magnet and can sense more obvious magnetic field changes, but also the magnetic field is not interfered by other parts, so that the signal output by the magnetic field sensor is stable and accurate, so that the braking system generates accurate and stable braking force, and improves the safety of braking.

[0009] In the above-mentioned electronic brake pedal, the induction part comprises an insert tube which is arranged along the axial direction of the push rod and is in a cylindrical shape, and the magnet is in a columnar shape and is fixed in the insert tube.

[0010] The insert has a fixing and protecting effect on the magnet, ensuring the stability of the position and magnetic force of the magnet, so that the signal output by the magnetic field sensor is stable and accurate, thereby improving the safety of braking.

[0011] In the above-mentioned electronic brake pedal, the sensing part also includes two protrusions respectively located on both sides of the plug-in tube, and the side of the protrusion facing the integrated block includes a vertically arranged positioning surface and an inclined surface inclined relative to the positioning surface toward a direction away from the integrated block, and the inclined surface is located above the positioning surface. The integrated block is provided with a micro switch corresponding to at least one protrusion, and the contact of the micro switch abuts against the positioning surface.

[0012] When the push rod moves downward, the contact of the micro switch slides from the positioning surface to the inclined surface and finally detaches from the protrusion. When the contact of the micro switch detaches from the positioning surface, a switch signal is generated. In this way, when the push rod moves downward, not only the magnetic field sensed by the magnetic field sensor will change, but the micro switch can also generate a switch signal. Generally, the switch signal of the micro switch can be used to control the lighting of the brake light, which improves the safety of braking, and can also be used as other control signals. In addition, the protrusion is located between the plug and the lug. The presence of the protrusion can properly separate the magnet and the magnetic field sensor by some distance, avoiding signal fluctuations caused by the magnetic field sensor being too close to the magnet, which is conducive to improving the safety of braking.

[0013] In the above-mentioned electronic brake pedal, the outer side surface of the mounting seat has a protruding extension arm, and the sensing part is located on the outer end of the extension arm. The provision of the extension arm makes the sensing part further away from the elastic member, reduces the interference of the elastic member, and improves braking safety.

[0014] In the above-mentioned electronic brake pedal, both sides of the extension arm have protruding positioning blocks, and the cavity wall surface of the inner cavity of the shell has positioning planes corresponding to the positioning blocks one by one, the positioning planes are vertically arranged, and the positioning blocks are in contact with the corresponding positioning planes. The cooperation between the positioning planes and the positioning blocks allows the mounting seat to be circumferentially positioned in the shell, avoiding the rotation of the mounting seat and causing changes in the magnetic field sensor signal, thereby improving the safety of braking.

[0015] In the above-mentioned electronic brake pedal, the outer side surface of the push rod has a protruding circular convex ring, the mounting seat and the elastic member are respectively located on both sides of the convex ring, the cavity wall surface of the inner cavity of the shell has a cylindrical mating surface, and the outer side surface of the convex ring matches the mating surface.

[0016] The convex ring can not only separate the mounting seat and the elastic part, avoiding the interference of the elastic part on the magnetic field of the magnet, but also the convex ring has a sliding guide and radial positioning function for the push rod. The push rod moves up and down accurately and stably in the shell, that is, the magnet on the mounting seat moves up and down accurately and stably, so that the signal output by the magnetic field sensor is stable and accurate, so that the braking system generates accurate and stable braking force, thereby improving the safety of braking.

[0017] In the above-mentioned electronic brake pedal, the mounting seat is mounted on the push rod, and a nut is threadedly connected to the push rod above the mounting seat. An adjustment spring is connected between the mounting seat and the push rod, and the adjustment spring is located below the mounting seat. Under the action of the adjustment spring, the mounting seat rests on the nut.

[0018] When the mounting seat needs to be adjusted up or down on the push rod, the nut is screwed, and the mounting seat moves up or down with the nut under the action of the adjustment spring. After the position of the mounting seat is adjusted, the up or down position of the magnet is also adjusted accordingly, so that the signal output by the magnetic field sensor is accurate, improving the braking safety.

[0019] In the above-mentioned electronic brake pedal, a circuit board is also fixed in the shell, the integrated block is located between the circuit board and the push rod, the integrated block is fixedly connected to the circuit board, the magnetic field sensor and the micro switch are both electrically connected to the circuit board, and a socket protruding outward is also fixed on the shell, and the socket is electrically connected to the circuit board.

[0020] The circuit board is integrated and fixed in the housing, so that the electronic brake pedal has a compact structure and is easy to install on the vehicle.

[0021] In the above-mentioned electronic brake pedal, a sleeve is fixed to the bottom of the housing, and the bottom end of the push rod is inserted into the sleeve to form a clearance fit. The sleeve has a guiding and positioning function for the push rod, so that the push rod can slide up and down accurately, thereby making the output signal of the magnetic field sensor accurate, thereby improving the safety of braking.

[0022] In the above-mentioned electronic brake pedal, the two lugs are both fixed with the magnetic field sensor, and there are two micro switches corresponding to the lugs one by one.

[0023] The redundant design of two signals means that when one magnetic field sensor fails, the other magnetic field sensor can still work, thus ensuring normal braking and improving braking safety. The output signals of the two magnetic field sensors are added to a fixed value or in a proportional relationship, with a self-diagnosis function, and can realize mutual diagnosis of whether the signal is accurate when the output signal is abnormal or the component function fails.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] The output signal of the electronic brake pedal is stable and consistent, which improves the safety of braking. Moreover, the electronic brake pedal has a compact structure and a small appearance, which saves installation space. In addition, the electronic brake pedal has a dual-channel signal redundancy function and a dual-channel signal correlation function to ensure braking safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the electronic brake pedal.

[0027] Figure 2 It is a cross-sectional view of the electronic brake pedal.

[0028] Figure 3 yes Figure 2 Local cross-sectional view along the AA direction.

[0029] Figure 4 yes Figure 3 Partial cross-sectional view along the BB direction (rotated 90° clockwise).

[0030] Figure 5 yes Figure 3 Partial cross-sectional view along CC direction.

[0031] Figure 6 It is a three-dimensional diagram of the electronic brake pedal mounting base and the integrated block.

[0032] Figure 7 This is the circuit schematic diagram of the electronic brake pedal.

[0033] Figure 8 It is the characteristic curve of this electronic brake pedal.

[0034] In the figure, 1, housing; 1a, main body; 1a1, positioning plane; 1a2, matching surface; 1b, mounting plate; 1c, cover plate; 2, plate body; 2a, limiting protrusion; 3, push rod; 3a, convex ring; 4, elastic member; 5, mounting seat; 5a, extension arm; 5b, sensing part; 5b1, insert tube; 5b2, protrusion; 5b2a, positioning surface; 5b2b, inclined surface; 5c, positioning block; 6, integrated block; 6a, lug; 7, Magnetic field sensor; 8. Micro switch; 9. Magnet; 10. Circuit board; 11. Socket; 12. Nut; 13. Adjustment spring; 14. Adjustment bolt; 15. Roller; 16. Bushing; 17. Push rod sleeve; 18. Bushing; P1. Brake light starting position; P2. Auxiliary brake starting position; P3. EMB motor working starting position; S. Push rod stroke; α, plate rotation angle; F, pedal force; t, signal pulse time. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] Embodiment 1

[0037] like Figure 1 and Figure 2As shown, an electronic brake pedal comprises a housing 1 and a plate 2, wherein a push rod 3 capable of sliding up and down is inserted into the housing 1, and an elastic member 4 is connected to the push rod 3 so that the top end of the push rod 3 abuts against the plate 2. The housing 1 comprises a main body 1a, a mounting plate 1b and a cover plate 1c, and the plate 2 is in the shape of a long strip. The main body 1a has a mounting cavity with an opening at the top, the mounting plate 1b covers the top end of the main body 1a and is fixedly connected to the main body 1a by bolts, the side of the main body 1a is provided with a connection port communicating with the mounting cavity, and the cover plate 1c covers the connection port of the main body 1a and is fixedly connected to the main body 1a by bolts. Two upwardly protruding hinged ears are provided on the top surface of the mounting plate 1b, and one end of the plate 2 is embedded between the two hinged ears and is hinged to the hinged ears through a pin. The plate 2 is arranged obliquely relative to the connecting plate, and the other end of the plate 2 is higher than the hinged ear. A roller 15 is connected to the lower surface of the plate 2, and the roller 15 is located above the pin. A limiting protrusion 2a is also provided on the lower surface of the plate body 2, and an adjusting bolt 14 is threadedly connected to the corresponding limiting protrusion 2a on the mounting plate 1b, and the limiting protrusion 2a can abut against the head of the adjusting bolt 14. A locking nut is threadedly connected to the adjusting bolt 14, and the locking nut abuts against the top surface of the mounting plate 1b. The cooperation between the adjusting bolt 14 and the limiting protrusion 2a is used to limit the initial tilt angle of the plate body 2. The initial tilt angle of the plate body 2, i.e., the angle between the plate body 2 and the mounting plate 1b, is generally 40°-46°, such as 43°. When the initial tilt angle of the plate body 2 needs to be adjusted, the locking nut is loosened, and then the adjusting bolt 14 is rotated to adjust the head height of the adjusting bolt 14. After the adjustment is completed, the locking nut is retightened.

[0038] like Figure 2 As shown, the mounting plate 1b has a cylindrical mounting cylinder located below the roller 15, a bushing 16 is fixed in the mounting cylinder, a push rod sleeve 17 that can slide up and down is inserted in the bushing 16, and the outer side of the roller 15 abuts against the top surface of the push rod sleeve 17. The push rod 3 is inserted in the main body 1a, and the top of the push rod 3 is inserted into the push rod sleeve 17 and abuts against the push rod sleeve 17. The bottom of the main body 1a is fixed with a shaft sleeve 18, and the bottom end of the push rod 3 is inserted into the shaft sleeve 18 and forms a clearance fit. The push rod 3 is sleeved with an annular mounting seat 5, and the outer side of the push rod 3 has a protruding annular convex ring 3a, the mounting seat 5 is located above the convex ring 3a, and the elastic member 4 is located below the convex ring 3a. The cavity wall surface of the mounting cavity of the main body 1a has a cylindrical mating surface 1a2, the outer side surface of the convex ring 3a matches the mating surface 1a2, and the outer side surface of the convex ring 3a and the mating surface 1a2 are clearance fit. The elastic member 4 is a compression spring, which is mounted on the push rod 3, and the two ends of the compression spring are respectively against the convex ring 3a and the bottom wall of the main body 1a. A gasket is arranged between the compression spring and the bottom wall of the main body 1a, so that the bottom wall of the main body 1a is subjected to uniform force. A circuit board 10 is fixed between the cover plate 1c and the main body 1a, and a socket 11 protruding outward is arranged on the cover plate 1c, and the socket 11 is electrically connected to the circuit board 10.

[0039] like Figure 2 As shown, a nut 12 is threadedly connected to the push rod 3 above the mounting seat 5, and an adjustment spring 13 is connected between the mounting seat 5 and the push rod 3. The adjustment spring 13 is located below the mounting seat 5. Under the action of the adjustment spring 13, the mounting seat 5 abuts against the nut 12. The adjustment spring 13 is sleeved on the push rod 3, and a washer is provided between the top of the adjustment spring 13 and the mounting seat 5, and the bottom of the adjustment spring 13 abuts against the convex ring 3a. When the position of the mounting seat 5 needs to be adjusted, the nut 12 is rotated to drive the mounting seat 5 to slide up and down on the push rod 3. A abutting gasket is provided between the nut 12 and the mounting seat 5 to reduce the friction between the nut 12 and the mounting seat 5 during adjustment.

[0040] like Figure 2 and Figure 3 As shown, a concave-shaped integrated block 6 is fixed at the connection port of the main body 1a. The integrated block 6 includes two lugs 6a that protrude toward the mounting seat 5 and are distributed in the circumferential direction of the push rod 3. The two lugs 6a are symmetrically arranged. The integrated block 6 is located between the circuit board 10 and the mounting seat 5 and is fixedly connected to the circuit board 10. The side of the integrated block 6 facing away from the mounting seat 5 has a plurality of pins, and the pins are inserted into the circuit board 10 and fixed. A magnetic field sensor 7 is fixedly connected to each of the two lugs 6a. The magnetic field sensor 7 can be a magnetoresistive sensor, such as a TMR linear magnetic field sensor chip with a voltage signal range of 0.5V-5V, or it can be other sensors that can sense magnetic fields, such as a Hall sensor, a magnetoresistive transistor, etc. In combination Figure 4 As shown, the outer surface of the mounting seat 5 has an extension arm 5a protruding toward the integrated block 6, and the outer end of the extension arm 5a has a protruding induction portion 5b inserted between the two lugs 6a. A magnet 9 that can be sensed by the magnetic field sensor 7 is fixed in the induction portion 5b. The magnet 9 can be a magnetic steel or a magnet. The induction portion 5b includes a cylindrical insert 5b1 arranged along the axial direction of the push rod 3, and the magnet 9 is cylindrical and fixed in the insert 5b1. Figure 5 As shown, the sensing part 5b also includes two protrusions 5b2 located on both sides of the insert 5b1, and the side of the protrusion 5b2 facing the integrated block 6 includes a vertical positioning surface 5b2a and an inclined surface 5b2b inclined toward the push rod 3 relative to the positioning surface 5b2a, and the inclined surface 5b2b is located above the positioning surface 5b2a. The integrated block 6 is provided with a micro switch 8 corresponding to the protrusion 5b2 one by one, and the contact of the micro switch 8 can be against the positioning surface 5b2a of the corresponding protrusion 5b2.

[0041] like Figure 3 and Figure 6As shown, both sides of the extension arm 5a have protruding positioning blocks 5c, and the cavity wall surface of the main body 1a installation cavity has a positioning plane 1a1 corresponding to the positioning block 5c, and the positioning plane 1a1 is vertically arranged. The positioning block 5c has a matching plane opposite to the positioning plane 1a1, and the matching plane of the positioning block 5c is in contact with the corresponding positioning plane 1a1. The positioning block 5c is located below the protrusion 5b2, and the protrusion 5b2 protrudes from the positioning block 5c in the direction toward the integrated block 6, and there is a gap between the magnetic field sensor 7 and the positioning block 5c to avoid interference.

[0042] like Figure 7 As shown, GND1 and GND2 both represent the negative pole of the power supply. Two micro switches 8 and two magnetic field sensors 7 form a dual-path signal. The magnetic field sensor 7 is a TMR linear magnetic field sensor chip. The two TMR linear magnetic field sensor chips output PWM1 signal and PWM2 signal respectively. The two micro switches 8 are normally closed switches and normally open switches respectively. When the two micro switches 8 are actuated, they output SW1 signal and SW2 signal respectively. The SW1 signal or SW2 signal is used to control the lighting of the brake light. The two magnetic field sensors 7 are used to detect the stroke S of the push rod 3. The PWM1 signal and PWM2 signal are used to calculate the stroke S of the push rod 3 and the rotation angle α of the plate body 2.

[0043] like Figure 8 As shown, the characteristic curves of the PWM1 signal and the PWM2 signal are linear curves that are proportional or inversely proportional to the stroke S of the push rod 3, and the sum of the PWM1 signal and the PWM2 signal is a fixed value. Among them, the characteristic curve of the PWM1 signal is a linear curve that is proportional to the stroke S of the push rod 3, and the characteristic curve of the PWM2 signal is a linear curve that is inversely proportional to the stroke S of the push rod 3, PWM1+PWM2=4420. The pedal force F is a linear curve that is proportional to the stroke S of the push rod 3. Alternatively, the PWM1 signal and the PWM2 signal can also be in a proportional relationship, for example, the characteristic curves of the PWM1 signal and the PWM2 signal are both linear curves that are proportional to the stroke S of the push rod 3, and the division of PWM1 and PWM2 = a fixed value, which can be 1. In this way, when a change in the fixed value is detected, a brake system fault can be fed back.

[0044] Before braking, Figure 2As shown, the elastic member 4 acts on the push rod 3 to make the push rod 3 press against the plate body 2, and the plate body 2 remains in an upward tilted state. At this time, the positioning surface 5b2a of the protrusion 5b2 abuts against the contact of the micro switch 8, and the two magnetic field sensors 7 and the two micro switches 8 have no signal output, and the stroke S of the push rod 3 and the rotation angle α of the plate body 2 are both zero. During braking, a downward pedal force F is applied to the plate body 2, and the plate body 2 rotates downward, thereby driving the push rod 3 to move downward, and the elastic member 4 is compressed to form a pedal damping force. When the rotation angle α of the plate body 2 is 3°-4°, the stroke S of the push rod 3 is 1.1 mm-1.5 mm, and the contact of the micro switch 8 is separated from the positioning surface 5b2a, and the SW1 signal or the SW2 signal is output, and the brake light is lit, as shown in FIG. Figure 8 The plate body 2 continues to rotate downward. When the plate body 2 rotates at an angle α of 5°, the stroke S of the push rod 3 is 1.9 mm, and the auxiliary brake is activated. Figure 8 When the plate 2 rotates at an angle α of 5.5°, the stroke S of the push rod 3 is 2.05 mm, and the EMB motor starts. Figure 8 The P3 position in .

[0045] The electronic brake pedal is a transmission device that can convert the stroke or angle of the pedal into an electrical signal and a switch signal, thereby controlling the vehicle's deceleration system, brake energy recovery system, and electric brake system to realize the braking process and the release process. It is mainly used in the electric control braking system of hybrid electric vehicles and pure electric vehicles. Working principle: two TMR linear magnetic field sensor chips and a magnet 9 are assembled into a signal detection module according to the specified matching position, and two micro switches 8 are installed on the PCB circuit board 10, which are in contact with the two protrusions 5b2 of the mounting seat 5. When a person presses the pedal, the stroke S of the push rod 3 is converted into a PWM signal and a switch signal.

[0046] The output signal of the electronic brake pedal is accurate and stable, which improves the braking safety; it has a dual-channel signal redundancy function to ensure braking safety; it has a signal correlation function, and the sum of the two signals is equal to a fixed value or the two signals are in proportional relationship; it has a self-diagnosis function, and has the characteristics of being able to mutually diagnose whether the signal is accurate when the output signal is abnormal or the component function fails; it has good electromagnetic compatibility, and can work normally in an electromagnetic environment without causing unbearable electromagnetic interference to anything in the environment; it has a low working voltage, is powered by DC5V voltage, and has low power consumption; the output signal is stable and consistent; it has a compact structure, a small appearance, and saves installation space.

[0047] Embodiment 2

[0048] The elastic member 4 is arranged above the mounting seat, and the other structures are basically the same as those of the first embodiment. The elastic member 4 is a tension spring, and the upper and lower ends of the tension spring are connected to the mounting plate 1b and the push rod 3 respectively.

[0049] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An electronic brake pedal, comprising a housing (1), a magnetic field sensor (7), and a magnet (9) that can be sensed by the magnetic field sensor (7), wherein the top end of the housing (1) is hingedly connected to a plate (2), a push rod (3) that can slide up and down is inserted into the housing (1), and an elastic member (4) is connected to the push rod (3) so that the top end of the push rod (3) abuts against the plate (2), characterized in that: The push rod (3) is fixedly connected to a mounting seat (5), and a "concave"-shaped integrated block (6) is fixed in the housing (1). The integrated block (6) includes two lugs (6a) protruding toward the mounting seat (5) and distributed in the circumferential direction of the push rod (3). The magnetic field sensor (7) is fixed to at least one lug (6a). The mounting seat (5) has a sensing portion (5b) protruding and inserted between the two lugs (6a). The magnet (9) is fixed to the sensing portion (5b). The elastic member (4) is located below or above the mounting seat (5). The sensing portion (5b) includes a cylindrical insert (5b) arranged along the axial direction of the push rod (3). 1), the magnet (9) is columnar and fixed in the insert (5b1), the induction portion (5b) further comprises two protrusions (5b2) respectively located on both sides of the insert (5b1), the side of the protrusion (5b2) facing the integrated block (6) comprises a vertically arranged positioning surface (5b2a) and an inclined surface (5b2b) arranged in a direction away from the integrated block (6) relative to the positioning surface (5b2a), the inclined surface (5b2b) being located above the positioning surface (5b2a), and the integrated block (6) is provided with a micro switch (8) corresponding to at least one protrusion (5b2), and the contact of the micro switch (8) abuts against the positioning surface (5b2a).

2. The electronic brake pedal according to claim 1, characterized in that: The outer side surface of the mounting seat (5) is provided with a protruding extension arm (5a), and the sensing portion (5b) is located on the outer end of the extension arm (5a).

3. The electronic brake pedal according to claim 2, characterized in that: Both side surfaces of the extension arm (5a) are provided with protruding positioning blocks (5c); the cavity wall surface of the inner cavity of the shell (1) is provided with positioning planes (1a1) corresponding one to the positioning blocks (5c); the positioning planes (1a1) are vertically arranged, and the positioning blocks (5c) are in contact with the corresponding positioning planes (1a1).

4. The electronic brake pedal according to any one of claims 1 to 3, characterized in that: The outer surface of the push rod (3) has a protruding annular convex ring (3a), the mounting seat (5) and the elastic member (4) are respectively located on both sides of the convex ring (3a), the cavity wall surface of the inner cavity of the shell (1) has a cylindrical matching surface (1a2), and the outer side surface of the convex ring (3a) matches the matching surface (1a2).

5. The electronic brake pedal according to any one of claims 1 to 3, characterized in that: The mounting seat (5) is sleeved on the push rod (3); a nut (12) is threadedly connected to the push rod (3) above the mounting seat (5); an adjustment spring (13) is connected between the mounting seat (5) and the push rod (3); the adjustment spring (13) is located below the mounting seat (5); and under the action of the adjustment spring (13), the mounting seat (5) abuts against the nut (12).

6. The electronic brake pedal according to any one of claims 1 to 3, characterized in that: A circuit board (10) is also fixed in the housing (1), the integrated block (6) is located between the circuit board (10) and the push rod (3), the integrated block (6) is fixedly connected to the circuit board (10), the magnetic field sensor (7) and the micro switch (8) are both electrically connected to the circuit board (10), and a socket (11) protruding outward is also fixed to the housing (1), and the socket (11) is electrically connected to the circuit board (10).

7. The electronic brake pedal according to any one of claims 1 to 3, characterized in that: A shaft sleeve (18) is fixed to the bottom of the housing (1), and the bottom end of the push rod (3) is inserted into the shaft sleeve (18) to form a clearance fit.

8. The electronic brake pedal according to any one of claims 1 to 3, characterized in that: The two lugs (6a) are both fixed with the magnetic field sensor (7), and there are two micro switches (8) corresponding one to one with the convex blocks (5b2).

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