Brake pedal combined system

Abstract

The utility model provides a brake pedal combined system, and relates to the technical field of automobile brake mechanisms. The system comprises a brake pedal, a magneto-rheological rotary damper, an induction magnet, an angle sensor, a vehicle-mounted controller and a spring assembly. The brake pedal comprises a pedal end and a supporting rod end connected with the pedal end. The magneto-rheological rotary damper comprises a rotating shaft and a magneto-rheological assembly, one end of the rotating shaft is fixedly arranged on the supporting rod end, and the other end of the rotating shaft is rotatably arranged in the magneto-rheological assembly; the induction magnet is arranged at the other end of the rotating shaft; the angle sensor is arranged on the magneto-rheological assembly and corresponds to the induction magnet. The angle sensor and the magneto-rheological assembly are connected with the vehicle-mounted controller through wires. One end of the spring assembly is connected with the vehicle body, and the other end is connected with the strut end. The pedal feeling simulator can solve the problem that a spiral cylindrical compression spring type pedal feeling simulator is small in compression amount and non-adjustable in pre-tightening degree and cannot meet the requirements of different vehicle types or individual drivers.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile brake mechanisms, in particular to a brake pedal combination system. Background Art

[0002] The braking mechanism of a car is an important mechanism for safe driving. The working principle of the braking mechanism currently used is that the driver steps on the brake pedal to push the piston connecting rod connected to the brake pressure regulator and the brake master cylinder; the brake master cylinder will form corresponding pressure on the braking route according to the size of the pedal force, and push the brake pressure to the brake disc through the wheel side brake cylinder under the interaction of mechanical and hydraulic forces. For the traditional wheeled vehicle braking system, its gas or liquid transmission pipeline is long and has many valve components; for long wheelbase or multi-axle vehicles and remote control vehicles, due to the long pipeline and slow speed, it is easy to produce braking lag, increase the braking distance, reduce safety, and the cost of the braking system is also high.

[0003] With the development of electronic technology and network technology, more efficient and energy-saving wire control technology has emerged; the wire control brake system formed by combining wire control technology and automobile braking system uses wires as information transmission media and electric drive components as brake actuators. The control unit recognizes the driver's braking intention based on sensor signals such as pedal pressure and pedal displacement, and controls the actuator to achieve vehicle braking. Therefore, the wire control brake system replaces the traditional hydraulic brake pedal with an electronic brake pedal.

[0004] Regarding the electronic brake pedal, the invention patent with application number CN200910142366.1 discloses an automotive electronic brake pedal based on a wire control brake system, including a brake pedal base and an electronic brake. A pedal signal sensor is provided on the brake pedal base, and a HAL815 linear Hall sensor that can transmit a pedal angle displacement signal is used. The output end of the pedal signal sensor is connected to the electronic brake; a pedal feeling simulator is also provided at the lower part of the brake pedal base, and the pedal feeling simulator is two spiral cylindrical compression springs. This patent eliminates the mechanical or hydraulic connection between the traditional brake pedal and the brake, and has a simple structure and is lighter. However, the two spiral cylindrical compression spring-type pedal feeling simulators provided at the lower part of the pedal base in this patent are not ideal in terms of pedal brake feeling authenticity or accuracy due to the small space occupied by the springs and the small amount of compressibility. At the same time, since the preload of the spring is not adjustable, the pedal feeling simulator cannot meet the requirements of different vehicle models or individual drivers.

[0005] In summary, it is necessary to provide a brake pedal combination system to solve the problem that the helical cylindrical compression spring pedal feel simulator has a small compression amount and an unadjustable preload and cannot meet the requirements of different vehicle models or individual drivers. Utility Model Content

[0006] The utility model aims to provide a brake pedal combination system, and the specific technical scheme is as follows:

[0007] A brake pedal assembly system includes a brake pedal, a magnetorheological rotary damper, an induction magnet, an angle sensor, an on-vehicle controller and a spring assembly;

[0008] The brake pedal includes a pedal end and a support rod end connected to the pedal end; the magnetorheological rotational damper includes a rotating shaft and a magnetorheological component, one end of the rotating shaft is fixedly arranged on the support rod end, and the end away from the support rod end is rotatably arranged in the magnetorheological component; the induction magnet is arranged on the end of the rotating shaft away from the support rod end; the magnetorheological component is connected to the vehicle-mounted controller through a wire; the angle sensor is arranged on the magnetorheological component and is arranged corresponding to the induction magnet; the angle sensor is connected to the vehicle-mounted controller through a wire; one end of the spring assembly is connected to the vehicle body, and the other end is connected to the support rod end.

[0009] Optionally, the magnetorheological component includes an upper end cover, a lower end cover, a rotating disk and an excitation coil; the upper end cover is arranged on the lower end cover, and a accommodating cavity is arranged between the two; the accommodating cavity is filled with magnetorheological fluid; the end of the rotating shaft away from the support rod end passes through the upper end cover, the accommodating cavity and the lower end cover, and the rotating disk is arranged on the rotating shaft and located in the accommodating cavity; the excitation coil is circumferentially arranged on the inner wall of the accommodating cavity, and a gap is left between the excitation coil and the rotating disk; the excitation coil is connected to the vehicle-mounted controller through a wire.

[0010] Optionally, the magnetorheological component also includes an upper bearing and a lower bearing; a first limiting groove is provided on the upper end cover, the upper bearing is provided in the first limiting groove, and is in rolling contact with the rotating shaft; a second limiting groove is provided on the lower end cover, the lower bearing is provided in the second limiting groove, and is in rolling contact with the rotating shaft.

[0011] Optionally, the magnetorheological component also includes an upper retaining ring and a lower retaining ring; the upper retaining ring is arranged in the first limiting groove and is located on the side of the upper bearing away from the lower bearing; the lower retaining ring is arranged in the second limiting groove and is located on the side of the lower bearing away from the upper bearing.

[0012] Optionally, the magnetorheological component also includes a sealing ring, a first oil seal and a second oil seal; the sealing ring is arranged between the upper end cover and the lower end cover; the first oil seal is arranged between the upper end cover and the rotating shaft; the second oil seal is arranged between the lower end cover and the rotating shaft.

[0013] Optionally, the magnetorheological component further includes a magnetic isolation seat, on which a mounting through hole for mounting the induction magnet is provided; the magnetic isolation seat is connected to the rotating shaft.

[0014] Optionally, the magnetorheological component also includes a back cover, which is arranged on a side of the lower end cover away from the upper end cover and connected to the lower end cover; an installation cavity is provided between the back cover and the lower end cover, and the angle sensor, the induction magnet and the magnetic isolation seat are all arranged in the installation cavity.

[0015] Optionally, the spring assembly includes a telescopic rod, a first end cover, a second end cover and an elastic member; the first end cover and the second end cover are respectively arranged at both ends of the telescopic rod; the elastic member is sleeved on the telescopic rod, and one end thereof is connected to the first end cover, and the other end is connected to the second end cover; the first end cover is connected to the vehicle body, and the second end cover is connected to the support rod end.

[0016] Optionally, the spring assembly also includes a first sleeve and a second sleeve; the first sleeve and the second sleeve are coaxially arranged on the telescopic rod, and the outer diameter of the first sleeve is smaller than the outer diameter of the second sleeve; one end of the first sleeve is connected to the first end cover, and the other end approaches or moves away from the second sleeve along the telescopic rod; one end of the second sleeve is connected to the second end cover, and the other end approaches or moves away from the first sleeve along the telescopic rod; the elastic member is sleeved on the first sleeve and the second sleeve.

[0017] Optionally, the brake pedal assembly system further includes an axial locking member and a radial locking member;

[0018] The axial locking member comprises a first limiting ring and a second limiting ring; a third limiting groove for installing the first limiting ring and a fourth limiting groove for installing the second limiting ring are respectively arranged on the rotating shaft; the third limiting groove is arranged close to the magnetorheological component; the fourth limiting groove is arranged close to the support rod end;

[0019] The radial locking member comprises a top screw and a key; the key is arranged on one end of the rotating shaft connected to the support rod end; the top screw is arranged through the support rod end and is connected to the key.

[0020] The application of the technical solution of the utility model has at least the following beneficial effects:

[0021] The utility model provides a brake pedal assembly system. During the braking operation, that is, when the pedal end is stepped on, the support rod end compresses the spring assembly, forcing the spring assembly to compress and shorten, and at the same time, the support rod end drives the rotating shaft to rotate. At this time, the angle sensor transmits the angle information of the induction magnet rotating with the rotating shaft detected by the angle sensor to the vehicle controller through an analog signal, and the vehicle controller determines the stepping stroke of the pedal end and then changes the current output to the magnetorheological rotary damper to adjust the damping force of the pedal end, so as to achieve real-time control of the braking feedback of the pedal end; wherein, the greater the stepping stroke, the greater the current output by the vehicle controller to the magnetorheological rotary damper, and the greater the damping force generated on the pedal end. After the braking operation is completed, the compressed spring assembly links the support rod end and the pedal end under the action of the rebound force to return the brake pedal to its original position. Therefore, the brake pedal assembly system provided by the utility model can solve the problem that the spiral cylindrical compression spring pedal feeling simulator has a small compression amount and the preload is not adjustable, so it cannot meet the requirements of different vehicle models or individual drivers.

[0022] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of a brake pedal combination system in an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 An enlarged view of the partial view I in FIG.

[0026] Figure 3 is a cross-sectional view of a magnetorheological rotation damper in an embodiment of the utility model (an angle sensor and an induction magnet are shown in the figure);

[0027] Among them, 1. brake pedal, 1.1. pedal end, 1.2. support rod end, 2. magnetorheological rotary damper, 2.1. rotating shaft, 2.2. upper end cover, 2.3. lower end cover, 2.4. rotating disk, 2.5. excitation coil, 2.6. upper bearing, 2.7. lower bearing, 2.8. upper retaining ring, 2.9. lower retaining ring, 2.10. sealing ring, 2.11. first oil seal, 2.12. second oil seal, 2.13. magnetic isolation seat, 2.14. rear cover, 3. induction magnet, 4. angle sensor, 5. on-board controller, 6. spring assembly, 6.1. telescopic rod, 6.2. first end cover, 6.3. second end cover, 6.4. elastic member, 6.5. first sleeve, 6.6. second sleeve, 7. first limit ring, 8. second limit ring, 9. top screw, 10. key. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0029] Example:

[0030] See also Figure 1-3 , a brake pedal combination system, comprising a brake pedal 1, a magnetorheological rotary damper 2, an induction magnet 3, an angle sensor 4 (specifically a Hall sensor), an on-board controller 5 (specifically an ECU controller) and a spring assembly 6;

[0031] The brake pedal 1 includes a pedal end 1.1 and a support rod end 1.2 connected to the pedal end 1.1; the magnetorheological rotational damper 2 includes a rotating shaft 2.1 and a magnetorheological component, one end of the rotating shaft 2.1 is fixedly arranged on the support rod end 1.2, and the end away from the support rod end 1.2 is rotatably arranged in the magnetorheological component; the induction magnet 3 is arranged on the end of the rotating shaft 2.1 away from the support rod end 1.2; the magnetorheological component is connected to the vehicle controller 5 through a wire; the angle sensor 4 is arranged on the magnetorheological component and is arranged corresponding to the induction magnet 3; the angle sensor 4 is connected to the vehicle controller 5 through a wire; one end of the spring assembly 6 is connected to the vehicle body, and the other end is connected to the support rod end 1.2.

[0032] See also Figure 3The magnetorheological component includes an upper end cover 2.2, a lower end cover 2.3, a rotating disk 2.4 and an excitation coil 2.5; the upper end cover 2.2 is arranged on the lower end cover 2.3, and a accommodating cavity is arranged between the two; the accommodating cavity is filled with magnetorheological fluid; the end of the rotating shaft 2.1 away from the support rod end 1.2 passes through the upper end cover 2.2, the accommodating cavity and the lower end cover 2.3, and the rotating disk 2.4 is arranged on the rotating shaft 2.1 and is located in the accommodating cavity; the excitation coil 2.5 is circumferentially arranged on the inner wall of the accommodating cavity, and a gap is left between the rotating disk 2.4 to facilitate the rotation of the rotating disk 2.4 and the flow of magnetorheological fluid; the excitation coil 2.5 is connected to the vehicle-mounted controller 5 through a wire.

[0033] See also Figure 3 The magnetorheological assembly further includes an upper bearing 2.6 and a lower bearing 2.7; a first limiting groove is provided on the upper end cover 2.2, the upper bearing 2.6 is provided in the first limiting groove and is in rolling contact with the rotating shaft 2.1; a second limiting groove is provided on the lower end cover 2.3, the lower bearing 2.7 is provided in the second limiting groove and is in rolling contact with the rotating shaft 2.1. In this embodiment, the upper bearing 2.6 and the lower bearing 2.7 are used to facilitate the rotating shaft 2.1 to rotate relative to the magnetorheological assembly under the action of the support rod end 1.2.

[0034] See also Figure 3 The magnetorheological assembly further comprises an upper retaining ring 2.8 and a lower retaining ring 2.9; the upper retaining ring 2.8 is arranged in the first limiting groove and is located on the side of the upper bearing 2.6 away from the lower bearing 2.7; the lower retaining ring 2.9 is arranged in the second limiting groove and is located on the side of the lower bearing 2.7 away from the upper bearing 2.6. The upper retaining ring 2.8 is used in this embodiment to facilitate the upper bearing 2.6 to be stabilized in the first limiting groove; the lower retaining ring 2.9 is used in this embodiment to facilitate the lower bearing 2.7 to be stabilized in the second limiting groove.

[0035] See also Figure 3 The magnetorheological component also includes a sealing ring 2.10, a first oil seal 2.11 and a second oil seal 2.12; the sealing ring 2.10 is arranged between the upper end cover 2.2 and the lower end cover 2.3 to ensure the sealing of the accommodating cavity and prevent the magnetorheological fluid from flowing out; the first oil seal 2.11 is arranged between the upper end cover 2.2 and the rotating shaft 2.1 to prevent the magnetorheological fluid from flowing out; the second oil seal 2.12 is arranged between the lower end cover 2.3 and the rotating shaft 2.1 to prevent the magnetorheological fluid from flowing out.

[0036] See also Figure 3The magnetorheological component also includes a magnetic isolation seat 2.13, on which a mounting hole for mounting the induction magnet 3 is arranged. After the induction magnet 3 is mounted in the mounting hole, on the one hand, the magnetic isolation seat 2.13 can shield the interference of the magnetic field generated by the excitation coil 2.5 on the induction magnet 3, and on the other hand, the magnetic field emitted by the induction magnet 3 is collected by the angle sensor 4 through the mounting hole, thereby identifying the angle information of the induction magnet 3 rotating with the rotating shaft 2.1; the magnetic isolation seat 2.13 is connected to the rotating shaft 2.1.

[0037] See also Figure 3 The magnetorheological component also includes a back cover 2.14, which is arranged on a side of the lower end cover 2.3 away from the upper end cover 2.2 and is connected to the lower end cover 2.3; an installation cavity is provided between the back cover 2.14 and the lower end cover 2.3, and the angle sensor 4, the induction magnet 3 and the magnetic isolation seat 2.13 are all arranged in the installation cavity, which is convenient for protecting the angle sensor 4, the induction magnet 3 and the magnetic isolation seat 2.13.

[0038] See also Figure 1 The spring assembly 6 includes a telescopic rod 6.1, a first end cover 6.2, a second end cover 6.3 and an elastic member 6.4 (specifically a spring); the first end cover 6.2 and the second end cover 6.3 are respectively arranged at both ends of the telescopic rod 6.1; the elastic member 6.4 is sleeved on the telescopic rod 6.1, and one end thereof is connected to the first end cover 6.2, and the other end is connected to the second end cover 6.3, so as to facilitate the elastic member 6.4 to be compressed or rebounded along the telescopic rod 6.1; the first end cover 6.2 is connected to the vehicle body, and the second end cover 6.3 is connected to the support rod end 1.2.

[0039] See also Figure 1 The spring assembly 6 further includes a first sleeve 6.5 and a second sleeve 6.6; the first sleeve 6.5 and the second sleeve 6.6 are coaxially arranged on the telescopic rod 6.1, and the outer diameter of the first sleeve 6.5 is smaller than the outer diameter of the second sleeve 6.6; one end of the first sleeve 6.5 is connected to the first end cover 6.2, and the other end is close to or away from the second sleeve 6.6 along the telescopic rod 6.1; one end of the second sleeve 6.6 is connected to the second end cover 6.3, and the other end is close to or away from the first sleeve 6.5 along the telescopic rod 6.1; the elastic member 6.4 is sleeved on the first sleeve 6.5 and the second sleeve 6.6. This embodiment uses the first sleeve 6.5 and the second sleeve 6.6 to prevent the elastic member 6.4 from bending when compressed and affecting the rebound effect after braking.

[0040] The brake pedal assembly system further includes an axial locking member and a radial locking member;

[0041] See also Figure 1 , the axial locking member includes a first limiting ring 7 and a second limiting ring 8; a third limiting groove for installing the first limiting ring 7 and a fourth limiting groove for installing the second limiting ring 8 are respectively arranged on the rotating shaft 2.1; the third limiting groove is arranged close to the magnetorheological component; the fourth limiting groove is arranged close to the support rod end 1.2; this embodiment adopts the first limiting ring 7 and the second limiting ring 8 to realize the axial locking of the rotating shaft 2.1;

[0042] The radial locking member includes a top screw 9 and a key 10; the key 10 is arranged on one end of the rotating shaft 2.1 connected to the support rod end 1.2; the top screw 9 is arranged through the support rod end 1.2 and is connected to the key 10. In this embodiment, the top screw 9 and the key 10 are used to achieve radial locking of the rotating shaft 2.1.

[0043] The operation process of the brake pedal combination system is as follows:

[0044] During the braking operation, that is, when the pedal end 1.1 is stepped on, the support rod end 1.2 presses the spring assembly 6, forcing the spring assembly 6 to compress and shorten, and at the same time, the support rod end 1.2 drives the rotating shaft 2.1 to rotate. At this time, the angle sensor 4 transmits the angle information of the induction magnet 3 rotating with the rotating shaft 2.1 detected by the angle sensor 4 to the vehicle controller 5 through an analog signal, and the vehicle controller 5 determines the stepping stroke of the pedal end 1.1 and then changes the current output to the magnetorheological rotary damper 2 to adjust the damping force of the pedal end 1.1, so as to achieve real-time control of the braking feedback of the pedal end 1.1; wherein, the greater the stepping stroke, the greater the current output by the vehicle controller 5 to the magnetorheological rotary damper 2, and the greater the damping force generated on the pedal end 1.1. After the braking operation is completed, the compressed spring assembly 6 links the support rod end 1.2 and the pedal end 1.1 under the action of the rebound force to return the brake pedal 1 to its original position.

[0045] The operating principle of the magnetorheological rotary damper 2 is as follows:

[0046] During braking operation, that is, when the pedal end 1.1 is stepped on, the on-board controller 5 adjusts the magnitude of the output current of the magnetorheological rotary damper 2 in real time according to the analog signal input by the angle sensor 4; in the magnetorheological rotary damper 2, a magnetic field is generated after the excitation coil 2.5 is passed with current, so that the magnetorheological fluid becomes a viscoelastic solid and is arranged in a direction along the magnetic flux lines in the magnetic field, thereby causing the rotating shaft 2.1 and the rotating disk 2.4 to generate a damping force when rotating.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A brake pedal combination system, characterized in that: It comprises a brake pedal (1), a magnetorheological rotary damper (2), an induction magnet (3), an angle sensor (4), an on-vehicle controller (5) and a spring assembly (6); The brake pedal (1) comprises a pedal end (1.1) and a support rod end (1.2) connected to the pedal end (1.1); the magnetorheological rotary damper (2) comprises a rotating shaft (2.1) and a magnetorheological component, one end of the rotating shaft (2.1) is fixedly arranged on the support rod end (1.2), and the end away from the support rod end (1.2) is rotatably arranged in the magnetorheological component; the induction magnet (3) is arranged on the end of the rotating shaft (2.1) away from the support rod end (1.2); the magnetorheological component is connected to the vehicle controller (5) through a wire; the angle sensor (4) is arranged on the magnetorheological component and is arranged corresponding to the induction magnet (3); the angle sensor (4) is connected to the vehicle controller (5) through a wire; one end of the spring assembly (6) is connected to the vehicle body, and the other end is connected to the support rod end (1.2).

2. The brake pedal combination system according to claim 1, characterized in that: The magnetorheological component comprises an upper end cover (2.2), a lower end cover (2.3), a rotating disk (2.4) and an excitation coil (2.5); the upper end cover (2.2) is arranged on the lower end cover (2.3), and a receiving cavity is arranged between the two; the receiving cavity is filled with magnetorheological fluid; the end of the rotating shaft (2.1) away from the support rod end (1.2) passes through the upper end cover (2.2), the receiving cavity and the lower end cover (2.3); the rotating disk (2.4) is arranged on the rotating shaft (2.1) and is located in the receiving cavity; the excitation coil (2.5) is circumferentially arranged on the inner wall of the receiving cavity, and a gap is left between the excitation coil (2.5) and the rotating disk (2.4); the excitation coil (2.5) is connected to the vehicle-mounted controller (5) through a wire.

3. The brake pedal combination system according to claim 2, characterized in that: The magnetorheological component further comprises an upper bearing (2.6) and a lower bearing (2.7); a first limiting groove is arranged on the upper end cover (2.2), the upper bearing (2.6) is arranged in the first limiting groove and is in rolling contact with the rotating shaft (2.1); a second limiting groove is arranged on the lower end cover (2.3), the lower bearing (2.7) is arranged in the second limiting groove and is in rolling contact with the rotating shaft (2.1).

4. The brake pedal combination system according to claim 3, characterized in that: The magnetorheological component further comprises an upper retaining ring (2.8) and a lower retaining ring (2.9); the upper retaining ring (2.8) is arranged in the first limiting groove and is located on a side of the upper bearing (2.6) away from the lower bearing (2.7); the lower retaining ring (2.9) is arranged in the second limiting groove and is located on a side of the lower bearing (2.7) away from the upper bearing (2.6).

5. The brake pedal combination system according to claim 2, characterized in that: The magnetorheological component further comprises a sealing ring (2.10), a first oil seal (2.11) and a second oil seal (2.12); the sealing ring (2.10) is arranged between the upper end cover (2.2) and the lower end cover (2.3); the first oil seal (2.11) is arranged between the upper end cover (2.2) and the rotating shaft (2.1); and the second oil seal (2.12) is arranged between the lower end cover (2.3) and the rotating shaft (2.1).

6. The brake pedal combination system according to claim 2, characterized in that: The magnetorheological component also includes a magnetic isolation seat (2.13), on which a mounting through hole for mounting the induction magnet (3) is arranged; the magnetic isolation seat (2.13) is connected to the rotating shaft (2.1).

7. The brake pedal combination system according to claim 6, characterized in that: The magnetorheological component also includes a rear cover (2.14), which is arranged on a side of the lower end cover (2.3) away from the upper end cover (2.2) and connected to the lower end cover (2.3); an installation cavity is provided between the rear cover (2.14) and the lower end cover (2.3), and the angle sensor (4), the induction magnet (3) and the magnetic isolation seat (2.13) are all arranged in the installation cavity.

8. The brake pedal combination system according to any one of claims 1 to 7, characterized in that: The spring assembly (6) comprises a telescopic rod (6.1), a first end cover (6.2), a second end cover (6.3) and an elastic member (6.4); the first end cover (6.2) and the second end cover (6.3) are respectively arranged at both ends of the telescopic rod (6.1); the elastic member (6.4) is sleeved on the telescopic rod (6.1), and one end of the elastic member is connected to the first end cover (6.2) and the other end is connected to the second end cover (6.3); the first end cover (6.2) is connected to the vehicle body, and the second end cover (6.3) is connected to the support rod end (1.2).

9. The brake pedal combination system according to claim 8, characterized in that: The spring assembly (6) further comprises a first sleeve (6.5) and a second sleeve (6.6); the first sleeve (6.5) and the second sleeve (6.6) are coaxially arranged on the telescopic rod (6.1), and the outer diameter of the first sleeve (6.5) is smaller than the outer diameter of the second sleeve (6.6); one end of the first sleeve (6.5) is connected to the first end cover (6.2), and the other end is close to or away from the second sleeve (6.6) along the telescopic rod (6.1); one end of the second sleeve (6.6) is connected to the second end cover (6.3), and the other end is close to or away from the first sleeve (6.5) along the telescopic rod (6.1); the elastic member (6.4) is sleeved on the first sleeve (6.5) and the second sleeve (6.6).

10. The brake pedal combination system according to claim 8, characterized in that: The brake pedal assembly system also includes an axial locking member and a radial locking member; The axial locking member comprises a first limiting ring (7) and a second limiting ring (8); a third limiting groove for installing the first limiting ring (7) and a fourth limiting groove for installing the second limiting ring (8) are respectively arranged on the rotating shaft (2.1); the third limiting groove is arranged close to the magnetorheological component; the fourth limiting groove is arranged close to the support rod end (1.2); The radial locking member comprises a top screw (9) and a key (10); the key (10) is arranged on one end of the rotating shaft (2.1) connected to the support rod end (1.2); the top screw (9) is arranged through the support rod end (1.2) and is connected to the key (10).

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