Drive-by-wire electronic brake pedal with hysteresis effect

Abstract

The utility model discloses a drive-by-wire electronic brake pedal with a hysteresis effect. The drive-by-wire electronic brake pedal comprises a base, a pedal connecting rod, a rotating shaft, a hysteresis mechanism and a signal induction unit. The pedal connecting rod is rotationally connected with the base through a rotating shaft. The delaying mechanism is arranged between the base and the pedal connecting rod and comprises a supporting rotating shaft, a spring sliding block, a first supporting sliding block, a second supporting sliding block, a first elastic element and a second elastic element. The signal induction unit is used for transmitting a rotation angle signal of the brake pedal into an electric signal and outputting the electric signal to the control unit for brake control. The pedal is provided with the delaying mechanism, and when the pedal works, the delaying mechanism generates a delaying effect, so that a driver can well control the position of the pedal, an electric signal is stably output, the driving comfort is improved, and the fatigue feeling of feet of the driver is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic pedal technical field, concretely relates to a brake-by-wire electronic brake pedal with hysteresis effect. BACKGROUND

[0002] The traditional brake system mainly relies on the driver to input the driving intention by stepping on the brake pedal, generates the power by the vacuum of the engine, and finally provides the power by the hydraulic system to generate the brake. With the development of the electrification and the intelligentization of the automobile, compared with the traditional brake system, the mechanical brake-by-wire system cancels the vacuum booster and the hydraulic system, saves the installation and the space arrangement, and reduces the weight of the vehicle.

[0003] CN 118850028 A, CN 220639794 U and CN101559760A all disclose an electronic brake pedal of brake-by-wire, and the brake pedal of the above-mentioned patent does not have the hysteresis effect. When the road is uneven or the pressure applied on the pedal is unstable, it will cause the instability of the electric signal, and the foot pedal surface is easy to appear the top foot phenomenon. In addition, the driver needs to use a lot of force to maintain the position of the pedal, and long-time driving is easy to cause fatigue, so the driving comfort is poor. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above-mentioned problems, the utility model provides a brake-by-wire electronic brake pedal with hysteresis effect.

[0005] The utility model adopts the technical scheme of:

[0006] A brake-by-wire electronic brake pedal with hysteresis effect, comprising a base, a foot pedal connecting rod, a rotating shaft, a hysteresis mechanism and a signal sensing unit; the foot pedal connecting rod is rotatably connected with the base through the rotating shaft.

[0007] The hysteresis mechanism is arranged between the base and the foot pedal connecting rod, and comprises a supporting rotating shaft, a spring sliding block, a first supporting sliding block, a second supporting sliding block, a first elastic element and a second elastic element; the supporting rotating shaft is rotatably connected with the base, the spring sliding block is slidably connected with the supporting rotating shaft, the first elastic element acts between the spring sliding block and the supporting rotating shaft, the first supporting sliding block is rotatably connected with the foot pedal connecting rod and slidably connected with the supporting rotating shaft, the second supporting sliding block is slidably connected with the first supporting sliding block through an inclined surface, the second elastic element acts between the spring sliding block and the second supporting sliding block, and the second supporting sliding block and the first supporting sliding block are both in frictional contact with the inner side wall of the base.

[0008] The signal sensing unit is used for converting the angle signal of the rotation of the brake pedal into an electric signal and outputting the electric signal to a control unit for brake control.

[0009] When the driver steps on the pedal connecting rod, the pedal connecting rod rotates around the rotating shaft, and the rotating shaft bushing rotates, the magnet and the inductive moving piece installed on the rotating shaft bushing realize signal change through rotation, these signals are output to the control unit, and the control unit realizes the braking of the whole vehicle by processing the electric signal; When the pedal works, the pedal connecting rod rotates around the axis of the rotating shaft, driving the first support slider and the second support slider to rotate and rub on the base, the elastic element provides force to the support slider, and through the inclined surface cooperation of the first support slider and the second support slider, the force is provided to press the base to generate friction, that is, damping force, and hysteresis effect is generated, so that the driver can well control the pedal position, the electric signal is stably output, the driving comfort is improved, and the fatigue of the driver's feet is reduced.

[0010] Further, the signal sensing unit includes a magnetic sheet, a metal sheet, a left electronic box and a right electronic box, the left electronic box is provided with a Hall sensor, the right electronic box is provided with an inductive coil, the magnetic sheet and the metal sheet are fixedly connected with the rotating shaft through left and right bushings, and the left and right electronic boxes are fixedly installed on the left and right sides of the base. The magnetic sheet cooperates with the Hall sensor to generate a first electric signal, and the metal sheet cooperates with the inductive coil to generate a second electric signal. The two sets of sensing devices are arranged on the two sides of the base, and the two sets of sensing devices can play a double insurance role, improve the driving safety, and meet the functional safety D level (ASIL-D) requirement.

[0011] Further, the signal sensing unit includes a magnetic sheet, a metal sheet and an electronic box, the electronic box is provided with an inductive coil and a Hall sensor, the magnetic sheet and the metal sheet are fixedly connected with the rotating shaft through a bushing, and the electronic box is fixedly installed on one side of the base. The magnetic sheet cooperates with the Hall sensor to generate a first electric signal, and the metal sheet cooperates with the inductive coil to generate a second electric signal. The two sets of sensing devices are arranged on the same side of the base, and the two sets of sensing devices can play a double insurance role, improve the driving safety, and meet the functional safety D level (ASIL-D) requirement.

[0012] Further, the rotating shaft is a spline shaft, the bushing and the pedal connecting rod are fixedly connected with the rotating shaft in the circumferential direction, and the rotating shaft is axially rotatably connected with the base through the bushing. The synchronization degree and stability of the pedal and the electric signal are better, and the service life of the rotating shaft is improved by first selecting a wear-resistant bushing during use.

[0013] Further, the support rotating shaft includes a cylindrical connecting portion, a clamping groove connecting portion and a cylindrical guide portion, the cylindrical connecting portion is located at the bottom of the support rotating shaft and is used for rotatably connecting the base, the clamping groove connecting portion is located above the cylindrical connecting portion and is used for slidingly clamping the spring sliding block and limiting the first elastic element, and the cylindrical guide portion is located on one side of the clamping groove connecting portion and is used for slidingly connecting the first support slider. The hysteresis mechanism has compact structure, small installation space and good hysteresis effect.

[0014] Further, the first supporting sliding block is provided with a side-opened conical sliding groove, and the two side walls of the sliding groove are respectively provided with a first sliding surface and a second sliding surface; the second sliding surface is located at the small end of the sliding groove, and the outer side of the second sliding surface is provided with a limiting surface; the second supporting sliding block is provided with a conical sliding body matched with the conical sliding groove, and the two sides of the sliding body are respectively provided with a third sliding surface and a fourth sliding surface; the sliding body of the second supporting sliding block is slidingly inserted into the sliding groove of the first supporting sliding block, the first sliding surface is slidingly matched with the third sliding surface, and the second sliding surface is slidingly matched with the fourth sliding surface. The hysteresis mechanism is compact in structure, small in installation space and good in hysteresis effect.

[0015] Further, the side surface of the first supporting sliding block is provided with a first protruding block, and the first protruding block is away from the open end of the sliding groove; the side surface of the second supporting sliding block is provided with a second protruding block, and the first protruding block and the second protruding block are respectively in frictional contact with the two inner side walls of the base. The hysteresis mechanism is compact in structure, small in installation space and good in hysteresis effect.

[0016] Further, the first supporting sliding block and the second supporting sliding block are both formed by one-time injection molding of POM material. The process is simple, the wear resistance is better, and the weight is lighter.

[0017] Further, the second elastic element is a nonlinear elastic element. It is further preferred that the nonlinear elastic body is a coil spring or a disc spring or a variable-pitch compression spiral spring. This is more conducive to matching the force requirement of the brake pedal.

[0018] Further, the rotating shaft is a metal shaft. The strength is high, the wear is not easy, and the electric signal transmission is more stable.

[0019] The utility model discloses a hysteresis mechanism for electronic brake pedal, which comprises a base, a rotating shaft, a first supporting sliding block, a second supporting sliding block, a first elastic element and a second elastic element.

[0020] 1. The utility model discloses a hysteresis mechanism, when the pedal works, the footboard connecting rod rotates around the rotating shaft axis, drives the first supporting sliding block and the second supporting sliding block to rotate and rub on the base, and the elastic element provides force to the supporting sliding block, and through the slope cooperation of the first supporting sliding block and the second supporting sliding block, the damper force is provided to the base to generate friction force, that is, damping force, and hysteresis effect is generated, so that the driver can control the pedal position well, the electric signal is stably output, the driving comfort is improved, and the fatigue feeling of the driver's foot is reduced.

[0021] 2. The damper force size can be adjusted by adjusting the slope cooperation angle of the first supporting sliding block and the second supporting sliding block, so that the customization requirement is realized. DRAWINGS

[0022] Figure 1 It is the assembly drawing of the electronic brake pedal of the utility model.

[0023] Figure 2 It is the exploded view of the electronic brake pedal of the utility model.

[0024] Figure 3 Disassembly view of the electronic brake-by-wire pedal of Example 2.

[0025] Figure 4 Structure view of the hysteresis mechanism.

[0026] Figure 5 Structure view of the support shaft.

[0027] Figure 6 Structure view of the first support sliding block Figure 1 .

[0028] Figure 7 Structure view of the first support sliding block Figure 2 .

[0029] Figure 8 Structure view of the second support sliding block.

[0030] Figure 9 Mechanical model diagram of the electronic brake-by-wire pedal. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described clearly and completely in combination with the drawings and preferred embodiments.

[0032] For example, the end of the foot pedal connecting rod 2 connected with the base 1 is the front end of the utility model, and the end provided with the pedal is the rear end. Figure 1 For example, the side where the left electronic box 15 is installed is the left side of the utility model, and the side where the right electronic box 9 is installed is the right side. Figure 2 Example 1

[0033] Referring to Figs. 1 and 2, the embodiment provides an electronic brake-by-wire pedal with hysteresis effect, which comprises a base 1, a foot pedal connecting rod 2, a shaft 3, a right bushing 12, a left bushing 13, a hysteresis mechanism 30 and a signal sensing unit 40.

[0034] Figure 1 The base 1 is provided with an inner cavity for accommodating the foot pedal connecting rod 2, the cavity is open at the rear side, the left and right side walls of the cavity are provided with a shaft mounting hole A, the shaft mounting hole A is a through hole, and the bottom of the cavity is provided with a semicircular hole for connecting the hysteresis mechanism. One end of the foot pedal connecting rod 2 is provided with a shaft mounting hole B, the shaft mounting hole B is a shaft hole with a key groove, the other end of the foot pedal connecting rod 2 is provided with a pedal, and the bottom of the foot pedal connecting rod 2 is provided with a semicircular hole for connecting the hysteresis mechanism on the side close to the pedal. The shaft 3 is a spline shaft, the right bushing 12 and the left bushing 13 are provided with shaft holes with key grooves in the inside, and the shaft 3 is fixedly connected with the foot pedal connecting rod 2, the right bushing 12 and the left bushing 13 through the spline shaft. Figure 2

[0035] The base 1 is provided with an inner cavity for accommodating the foot pedal connecting rod 2, the cavity is open at the rear side, the left and right side walls of the cavity are provided with a shaft mounting hole A, the shaft mounting hole A is a through hole, and the bottom of the cavity is provided with a semicircular hole for connecting the hysteresis mechanism. One end of the foot pedal connecting rod 2 is provided with a shaft mounting hole B, the shaft mounting hole B is a shaft hole with a key groove, the other end of the foot pedal connecting rod 2 is provided with a pedal, and the bottom of the foot pedal connecting rod 2 is provided with a semicircular hole for connecting the hysteresis mechanism on the side close to the pedal. The shaft 3 is a spline shaft, the right bushing 12 and the left bushing 13 are provided with shaft holes with key grooves in the inside, and the shaft 3 is fixedly connected with the foot pedal connecting rod 2, the right bushing 12 and the left bushing 13 through the spline shaft. ​​

[0036] During installation, first, the right bushing 12 and left bushing 13 are rotatably installed in the shaft mounting hole A on the base 1. Then, the end of the foot pedal linkage 2 with the shaft mounting hole B is inserted into the inner cavity of the base 1 from the open end of the base. Finally, the shaft 3 passes through the left bushing 13, the foot pedal linkage 2, and the right bushing 12 in sequence. Alternatively, the foot pedal linkage can be placed in the base first, then the shaft is installed, followed by the left and right bushings. The base 1 and the shaft 3 are circumferentially connected via the right bushing 12 and left bushing 13, and the foot pedal linkage 2 and the shaft 3 are circumferentially fixed via splines. Stepping on the foot pedal linkage 2 causes the shaft 3 to rotate around its axis within the base 1.

[0037] The signal sensing unit 40 includes a right electronic box 9, a metal plate 11, a magnetic plate 14, and a left electronic box 15. Both the left electronic box 15 and the right electronic box 9 include a box body and a cover plate. The left electronic box 15 contains a Hall sensor, a circuit board, and connectors. The right electronic box 9 contains an inductor coil, a circuit board, and connectors. The magnetic plate 14 and the metal plate 11 are respectively fixedly mounted on the left bushing 13 and the right bushing 12. The left electronic box 15 is fixed to the left side of the base 1 with screws, and the right electronic box 9 is fixed to the right side of the base 1 with screws 10. When the pedal linkage 2 is pressed, the rotating shaft 3 drives the magnetic plate 14 and the metal plate 11 to rotate. The Hall sensor and the inductor coil change their output electrical signals according to the change in pedal angle displacement. The electrical signals are transmitted to the control unit through the connectors of the electronic boxes, and the control unit controls the braking.

[0038] See Figure 2 and Figure 4 The hysteresis mechanism 30 includes a first support slider 4, a second support slider 5, a spring slider 6, a support shaft 7, and an elastic element 8. The elastic element 8 includes a first elastic element 81 and a second elastic element 82; preferably, the first elastic element 81 is a constant pitch compression helical spring, and the second elastic element 82 is a variable pitch compression helical spring. The variable pitch compression helical spring is a non-linear elastic element, which is more conducive to matching the force requirements of the brake pedal.

[0039] The side wall of the spring slider 6 is provided with a buckle, and the top and bottom surfaces of the spring slider 6 are respectively provided with spring mounting parts for supporting the first elastic element and the second support element.

[0040] See Figure 5The support rotating shaft 7 comprises a cylindrical connecting part 71, a clamping groove connecting part 72 and a cylindrical guiding part 73. The clamping groove connecting part 72 is provided with a clamping groove body for accommodating the first elastic element 81 and the spring sliding block 6. The bottom of the clamping groove body is provided with a cylindrical part 721 for limiting and supporting the elastic element. The inner side wall of the clamping groove body is provided with a clamping groove 722 for slidingly connecting the spring sliding block 6. The cylindrical connecting part 71 is transversely arranged at the bottom of the clamping groove connecting part 72. The cylindrical guiding part 73 is vertically arranged at the rear side of the clamping groove connecting part 72, and is perpendicular to the axis of the cylindrical connecting part 71.

[0041] Referring to Figure 6 and Figure 7 , the first support sliding block 4 is provided with a slide groove 41 with an open right side and a bottom surface. The width of the slide groove gradually decreases from left to right. The left side of the slide groove is provided with a first protrusion 43. The rear side of the slide groove is provided with a guiding column connecting part 42. The guiding column connecting part 42 is internally provided with a waist-shaped through hole for slidingly connecting the cylindrical guiding part 73 of the support rotating shaft 7. The left and right side walls of the slide groove are respectively provided with two first sliding surfaces 45 and two second sliding surfaces 44. The first sliding surface 45 is located at the small end of the slide groove and is externally provided with a blocking surface. The first sliding surface 45 is parallel to the second sliding surface 44 and is lower than the second sliding surface 44. The top surface of the first support sliding block 4 is transversely provided with a semi-cylindrical connecting part 46 for connecting the pedal connecting rod 2.

[0042] Referring to Figure 7 , the second support sliding block 5 is provided with a sliding body 51 with a width gradually increasing from left to right. The right side of the sliding body is provided with a second protrusion 53. The bottom of the sliding body is provided with an open groove 52 for accommodating the second elastic element 82. The open groove 52 is internally provided with a spring mounting part for supporting the second elastic element. The rear side of the sliding body is provided with an arc-shaped opening for avoiding the cylindrical guiding part 73 of the support rotating shaft 7. The front and rear sides of the sliding body are respectively provided with two third sliding surfaces 54 and two fourth sliding surfaces 55. The third sliding surface 54 is slidingly connected with the first sliding surface 44, and the fourth sliding surface 55 is slidingly connected with the second sliding surface 45.

[0043] The plurality of sliding surfaces can increase the contact area of the second support sliding block 5 and the first support sliding block 4, and improve the effect of the second support sliding block 5 and the first support sliding block 4 extruding the side wall of the base to generate damping force.

[0044] Referring to Figure 1 and Figure 4 , when the hysteresis mechanism 30 is assembled and installed;

[0045] First, the first elastic element 81 is supported on the cylindrical portion 721 of the support shaft 7, and then the lower end of the spring block 6 is slidably inserted into the clamping groove of the support shaft clamping groove connecting portion 72. The spring block 6 is provided with a clasp, which cooperates with the clamping hole 722 of the support shaft 7 to limit the spring block 6 in the clamping groove. The spring block 6 slides up and down in the clamping groove under the action of the first elastic element 81, and the lower end of the first elastic element 81 is supported on the inner bottom surface of the clamping groove, and the upper end is supported on the spring mounting portion of the spring block 6.

[0046] Next, the second elastic element 82 is installed on the spring mounting portion at the top of the spring block 6, the second support block 5 is inserted into the sliding groove of the first support block 4, and then the first support block 4 is slidably inserted into the cylindrical guide portion 73 of the support shaft 7 through the through hole in the guide column connecting portion 42, so that one end of the second elastic element 82 is supported on the spring mounting portion of the spring block 6, and the other end is supported on the spring mounting portion of the second support block 5.

[0047] Finally, the assembled hysteresis mechanism 30 is installed between the base 1 and the pedal connecting rod 2, so that the cylindrical connecting portion 71 of the support shaft 7 is clamped into the semicircular hole of the base 1, the semicircular connecting portion 46 of the first support block 4 is clamped into the semicircular hole of the pedal connecting rod 2, the first elastic element 81 and the second elastic element 82 are in a free elongation state, the first protrusion 43 of the first support block 4 is in contact with the left inner wall of the base, and the second protrusion 53 of the second support block 5 is in contact with the right inner wall of the base.

[0048] When the pedal connecting rod 2 is stepped on, the pedal connecting rod 2 drives the first support block 4 and the second support block 54 to slide to the left and right while rotating, and at the same time the elastic element 8 is compressed, the spring force is transmitted to the base 1 through the inclined surface sliding action of the first support block 4 and the second support block 54, and the first protrusion 43 and the second protrusion 53 respectively press the two inner walls of the base to generate a damping force, and the force value curve is shown in Figure 9

[0049] Example 2

[0050] Referring to Figure 3 , Figure 3 The same components as in Example 1 are denoted by the same reference numerals.

[0051] Example 2 is basically the same as Example 1, except that the signal sensing unit 40 includes a right electronic box, a magnetic sheet 14, a metal sheet 11 and a snap spring 16. The right electronic box includes a box body 91 and a box cover plate 93, and the box body 91 is provided with a Hall sensor, an inductor coil, a circuit board 92 and a connector. The magnetic sheet 14 and the metal sheet 11 are fixedly installed on the right bush 12, and the end of the shaft extending out of the left bush 13 is locked by the snap spring 16. The right electronic box is fixed to the right side of the base 1 by the screw 10.​

[0052] Pedal down pedal connecting rod 2, pivot 3 drive magnetic sheet 14 and metal sheet 11 rotation, hall sensor and inductor coil according to the change of pedal angle displacement, the output of the electric signal corresponding change, electric signal through the right electronic box connector to the control unit, control unit control to realize brake braking.

[0053] The structure and working principle of the hysteresis mechanism of embodiment 2 are the same as those of embodiment 1, which will not be repeated here.

[0054] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements are also within the scope of the present application.

Claims

1. A by-wire electronic brake pedal with hysteresis, characterized in that, The brake pedal includes a base (1), a pedal connecting rod (2), a rotating shaft (3), a hysteresis mechanism and a signal sensing unit. The pedal connecting rod (2) is rotatably connected with the base (1) through the rotating shaft (3). The hysteresis mechanism is arranged between the base (1) and the pedal connecting rod (2) and includes a supporting rotating shaft (7), a spring sliding block (6), a first supporting sliding block (4), a second supporting sliding block (5), a first elastic element (81) and a second elastic element (82). The supporting rotating shaft (7) is rotatably connected with the base (1), the spring sliding block (6) is slidably connected with the supporting rotating shaft (7), the first elastic element (81) acts between the spring sliding block (6) and the supporting rotating shaft (7), the first supporting sliding block (4) is rotatably connected with the pedal connecting rod (2) and slidably connected with the supporting rotating shaft (7), the second supporting sliding block (5) is slidably connected with the first supporting sliding block (4) through a slope, the second elastic element (82) acts between the spring sliding block (6) and the second supporting sliding block (5), and the second supporting sliding block (5) and the first supporting sliding block (4) are in frictional contact with the inner side wall of the base (1). The signal sensing unit is used for transmitting the angle signal of the brake pedal rotation into an electric signal and outputting the electric signal to a control unit for brake control.

2. A brake-by-wire electronic brake pedal with hysteresis according to claim 1, characterized in that, The signal sensing unit includes a magnetic sheet (14), a metal sheet (11), a left electronic box (15) and a right electronic box (9). The left electronic box (15) is internally provided with a Hall sensor, the right electronic box (9) is internally provided with an inductor coil, the magnetic sheet (14) and the metal sheet (11) are fixedly connected with the rotating shaft (3) through left and right bushings, respectively, and the left electronic box (15) and the right electronic box (9) are fixedly installed on the left and right sides of the base (1), respectively. The magnetic sheet (14) cooperates with the Hall sensor to generate a first electric signal, and the metal sheet (11) cooperates with the inductor coil to generate a second electric signal.

3. A brake-by-wire electronic brake pedal with hysteresis according to claim 1, characterized in that, The signal sensing unit includes a magnetic sheet (13), a metal sheet (11) and an electronic box (9). The electronic box (9) is internally provided with an inductor coil and a Hall sensor, the magnetic sheet (14) and the metal sheet (11) are fixedly connected with the rotating shaft (3) through a bushing, the electronic box (9) is fixedly installed on one side of the base (1), the magnetic sheet (14) cooperates with the Hall sensor to generate a first electric signal, and the metal sheet (11) cooperates with the inductor coil to generate a second electric signal.

4. Brake-by-wire electronic brake pedal with hysteresis according to claim 2 or 3, characterized in that The rotating shaft (3) is a spline shaft, the bushing and the pedal connecting rod (2) are fixedly connected with the rotating shaft (3) through spline circumferential connection, and the rotating shaft (3) is circumferentially rotatably connected with the base (1) through the bushing.

5. The electronic brake-by-wire pedal with hysteresis of claim 1, wherein, The supporting rotating shaft (7) includes a cylindrical connecting portion, a clamping groove connecting portion and a cylindrical guiding portion. The cylindrical connecting portion is located at the bottom of the supporting rotating shaft (7) and is used for rotatably connecting the base (1). The clamping groove connecting portion is located above the cylindrical connecting portion and is used for slidably clamping the spring sliding block (6) and limiting the installation of the first elastic element (81). The cylindrical guiding portion is located on one side of the clamping groove connecting portion and is used for slidably connecting the first supporting sliding block (4).

6. A brake-by-wire electronic brake pedal with hysteresis according to claim 1, wherein, The first supporting sliding block (4) is provided with a conical chute with one open side, and the two side walls of the chute are respectively provided with a first sliding surface and a second sliding surface; the second sliding surface is located at the small end of the chute, and the outer side of the second sliding surface is provided with a limiting surface; the second supporting sliding block (5) is provided with a conical sliding body matched with the conical chute, and the two sides of the sliding body are respectively provided with a third sliding surface and a fourth sliding surface; the sliding body of the second supporting sliding block (5) is slidingly inserted into the chute of the first supporting sliding block (4), the first sliding surface is slidingly matched with the third sliding surface, and the second sliding surface is slidingly matched with the fourth sliding surface.

7. A brake-by-wire electronic brake pedal with hysteresis according to claim 6, characterized in that, The side surface of the first supporting sliding block (4) is provided with a first protrusion, and the first protrusion is away from the open end of the chute; the side surface of the second supporting sliding block (5) is provided with a second protrusion, and the first protrusion and the second protrusion are respectively in frictional contact with the two inner side walls of the base (1).

8. A brake-by-wire electronic brake pedal with hysteresis according to claim 7, characterized in that The first supporting sliding block (4) and the second supporting sliding block (5) are both made of POM material and are one-time injection molded.

9. The electronic brake-by-wire pedal with hysteresis of claim 1, wherein, The second elastic element (82) is a nonlinear elastic element.

10. The electronic brake-by-wire pedal with hysteresis of claim 1, wherein, The rotating shaft (3) is a metal shaft.

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