Electric pedal simulator

Abstract

This invention relates to the field of pedal simulator technology, specifically disclosing an electric pedal simulator. The electric pedal simulator includes a simulation block, a cap, a first reaction part, a second reaction part, and a drive assembly. When the driver wants to adjust the relationship between the pedal force and pedal travel of the electric pedal simulator, the driver controls the actuator to drive the sleeve to rotate. Because the main body and adjusting rod can only slide along the axis of the piston chamber under the action of the anti-rotation component, the sleeve drives the main body and adjusting rod to slide along the axis of the piston chamber, thereby adjusting the compression stroke of the first and second reaction parts, and thus realizing the adjustment of the pedal force and pedal travel. This electric pedal simulator only requires the driver to control the actuator in the cockpit to achieve the function of adjusting the relationship between the pedal force and pedal travel at any time.

Description

Technical Field

[0001] This invention relates to the field of pedal simulator technology, and more particularly to electric pedal simulators. Background Technology

[0002] The feel of the brake pedal in a traditional car is provided by the vacuum booster and the hydraulic pressure of the brake cylinder; the pedal feel usually refers to the relationship between the pedal force, pedal travel and the resulting braking deceleration of the entire vehicle when the driver presses the brake pedal.

[0003] With the development of the times, new energy vehicles are increasingly adopting electronically controlled power boosters, especially with the emergence of brake-by-wire. The decoupling between the brake pedal and the brake hydraulic pressure requires a dedicated pedal feel simulator to provide a pedal feel simulator, that is, to simulate the relationship between pedal travel and pedal force.

[0004] Currently, adjusting the brake pedal force and travel usually requires replacing mechanical hardware. The pedal simulator in CN112744197A requires replacing parts to adjust the brake pedal force and travel (such as replacing elastic components of different lengths or elastic coefficients). Therefore, it can only be debugged at the vehicle manufacturer before the vehicle rolls off the production line, and the relationship between pedal force and travel cannot be adjusted after it reaches the end customer.

[0005] There is an urgent need for an electric pedal simulator that uses electronic control to adjust the relationship between pedal force and pedal travel, so that customers can adjust the relationship between pedal force and pedal travel at any time according to their own driving habits. Summary of the Invention

[0006] The purpose of this invention is to provide an electric pedal simulator to solve the problem in related technologies where customers cannot adjust the relationship between pedal force and pedal travel of the electric pedal simulator according to their driving habits at any time.

[0007] This invention provides an electric pedal simulator, which includes:

[0008] The simulation block is provided with an oil hole and a piston chamber communicating with the oil hole. The oil hole is used to receive pressurized oil in the cylinder caused by the pedal force. The simulation block has an opening at one end away from the oil hole, and the opening is coaxially connected to the piston chamber.

[0009] The cap includes a body and an adjusting rod. One end of the body extends into the opening and slides in the piston chamber along the axial direction of the piston chamber. The body is provided with a through hole along the axial direction of the piston chamber. One end of the adjusting rod extends into the piston chamber through the through hole.

[0010] A first reaction part and a second reaction part are both disposed in the piston chamber. The first reaction part is elastic along the axis of the piston chamber and one end abuts against the adjusting rod. The second reaction part is elastic along the axis of the piston chamber and abuts against the other end of the first reaction part. The second reaction part is configured to compress itself after the first reaction part is compressed by the pressure oil flowing into the piston chamber.

[0011] The drive assembly includes a driver, a sleeve, and an anti-rotation component. The sleeve is fitted onto both the other end of the body and the other end of the adjusting rod, and is screwed to both ends. The anti-rotation component prevents the body and the adjusting rod from rotating about the axis of the piston chamber. The driver drives the sleeve to rotate.

[0012] By adjusting the distance between the adjusting rod and the oil hole, the compression stroke of the first reaction force part can be adjusted; by adjusting the distance between the body and the oil hole, the compression strokes of the first reaction force part and the second reaction force part can be adjusted simultaneously.

[0013] As a preferred technical solution for the electric pedal simulator, the thread direction at the other end of the main body is opposite to that at the other end of the adjusting rod, and the pitch of the thread at the other end of the main body is the same as that of the thread at the other end of the adjusting rod.

[0014] As a preferred technical solution for the electric pedal simulator, the thread direction at the other end of the main body is opposite to that at the other end of the adjusting rod, and the pitch of the thread at the other end of the main body is different from that of the thread at the other end of the adjusting rod.

[0015] As a preferred technical solution for the electric pedal simulator, the electric pedal simulator further includes a housing, the simulation block is fixed to the housing, the sleeve is rotatably engaged with the housing, and the driver drives the sleeve to rotate.

[0016] As a preferred technical solution for an electric pedal simulator, the first reaction force part includes a first elastic element and a retainer. The retainer is provided with a guide hole, the first elastic element is disposed in the guide hole, one end of the first elastic element abuts against the retainer, and the other end of the first elastic element abuts against the adjusting rod. When the second reaction force part is not pressurized by the pressure oil flowing into the piston chamber, the retainer is spaced apart from the body.

[0017] As a preferred technical solution for an electric pedal simulator, the first reaction part further includes a guide rod, which includes a rod body and a rod head fixedly connected to one end of the rod body. The other end of the rod body passes through the guide hole and is fixedly connected to the adjusting rod. The rod head is located outside the guide hole and prevents the retainer from coming out of the other end of the rod body.

[0018] As a preferred technical solution for an electric pedal simulator, the first reaction part further includes a first rubber pad, which is disposed on the body and opposite to the retainer.

[0019] As a preferred technical solution for an electric pedal simulator, the second reaction part includes a piston and a second elastic element. The piston is slidably disposed in the piston chamber, and the pressure oil supplied by the cylinder pressurizes the piston. One end of the second elastic element abuts against the piston, and the other end abuts against the cage. The elastic coefficient of the second elastic element is greater than that of the first elastic element.

[0020] As a preferred technical solution for an electric pedal simulator, the second reaction part further includes a second rubber pad, which is disposed on the piston and opposite to the rod head.

[0021] As a preferred technical solution for an electric pedal simulator, the piston has a protrusion on the surface opposite to the oil hole.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention provides an electric pedal simulator, which includes a simulation block, a cap, a first reaction force part, a second reaction force part, and a drive assembly. The simulation block is provided with an oil hole and a piston chamber communicating with the oil hole. The oil hole is used to receive pressurized oil in the cylinder caused by pedal force. The end of the simulation block away from the oil hole is provided with an opening, which is coaxially connected to the piston chamber. The cap includes a body and an adjusting rod. One end of the body extends into the opening and slides with the piston chamber along the axial direction of the piston chamber. The body is provided with a through hole along the axial direction of the piston chamber, and one end of the adjusting rod extends into the piston chamber through the through hole. Both the first reaction force part and the second reaction force part are provided with... The first reaction part is elastic along the axis of the piston chamber and abuts against the adjusting rod at one end. The second reaction part is elastic along the axis of the piston chamber and abuts against the other end of the first reaction part. The second reaction part is configured to compress the first reaction part by pressurizing it with pressurized oil flowing into the piston chamber, and then compress itself. The drive assembly includes a driver, a sleeve, and an anti-rotation component. The sleeve is fitted onto both the other end of the main body and the other end of the adjusting rod, and is screwed to both ends. The anti-rotation component prevents the main body and the adjusting rod from rotating around the axis of the piston chamber. The driver drives the sleeve to rotate. When the driver wants to adjust the relationship between the pedal force and pedal travel of the electric pedal simulator, the driver drives the sleeve to rotate. Since the main body and the adjusting rod can only slide along the axis of the piston chamber under the action of the anti-rotation component, the sleeve drives the main body and the adjusting rod to slide along the axis of the piston chamber, thereby adjusting the compression stroke of the first and second reaction parts, and thus realizing the adjustment of the pedal force and pedal travel. This electric pedal simulator allows the driver to control the drive from the cockpit, enabling them to adjust the relationship between pedal force and pedal travel at any time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the electric pedal simulator in Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the assembly of the sleeve and bearing in Embodiment 1 of the present invention;

[0026] Figure 3 This is a schematic diagram of the sleeve structure in Embodiment 1 of the present invention;

[0027] Figure 4 The graphs show the pedal travel and pedal force at each stage in Embodiments 1 and 2 of the present invention.

[0028] Figure 5 The graphs show the pedal force feedback and pedal travel in Embodiments 1 and 2 of the present invention.

[0029] In the picture:

[0030] 100. Hydraulic cylinder; 200. Pedal;

[0031] 1. Simulation block; 11. Oil hole; 12. Piston chamber;

[0032] 2. Cap; 21. Body; 22. Adjusting rod;

[0033] 31. First elastic element; 32. Cage; 33. Guide rod; 331. Rod body; 332. Rod head; 34. First rubber pad; 35. First sealing ring;

[0034] 41. Piston; 411. Protrusion; 42. Second elastic element; 43. Second rubber gasket; 44. Second sealing ring;

[0035] 51. Driver; 52. Sleeve; 53. Bearing; 6. Housing;

[0036] a) Phase 1; b) Phase 2; c) Phase 3; d) Phase 4;

[0037] e, First curve; f, Second curve; g, Third curve; h, Fourth curve; i, Fifth curve. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] Example 1

[0043] like Figures 1-3As shown, this embodiment provides an electric pedal simulator, which includes a simulation block 1, a cap 2, a first reaction force part, a second reaction force part, and a drive assembly. The simulation block 1 is provided with an oil hole 11 and a piston chamber 12 communicating with the oil hole 11. The oil hole 11 is used to receive pressurized oil in the cylinder 100 caused by the pedal force. The end of the simulation block 1 away from the oil hole 11 is provided with an opening, which is coaxially connected with the piston chamber 12. The cap 2 includes a body 21 and an adjusting rod 22. One end of the body 21 extends into the opening and slides with the piston chamber 12 along the axial direction of the piston chamber 12. The body 21 is provided with a through hole along the axial direction of the piston chamber 12, and one end of the adjusting rod 22 extends into the piston chamber 12 through the through hole. The first reaction force part and the second reaction force part are also provided. The components are all located in the piston chamber 12. The first reaction part is elastic along the axis of the piston chamber 12 and one end abuts against the adjusting rod 22. The second reaction part is elastic along the axis of the piston chamber 12 and abuts against the other end of the first reaction part. The second reaction part is configured to compress the first reaction part by pressurizing it with pressure oil flowing into the piston chamber 12, and then the second reaction part compresses itself. The drive assembly includes a driver 51, a sleeve 52 and an anti-rotation component. The sleeve 52 is sleeved on the other end of the body 21 and the other end of the adjusting rod 22. The sleeve 52 is screwed to the other end of the body 21 and the other end of the adjusting rod 22. The anti-rotation component prevents the body 21 and the adjusting rod 22 from rotating around the axis of the piston chamber 12. The driver 51 drives the sleeve 52 to rotate. When the driver wants to adjust the relationship between the pedal force and the pedal stroke 200 of the electric pedal simulator, the control actuator 51 drives the sleeve 52 to rotate. Since the body 21 and the adjusting rod 22 can only slide along the axis of the piston chamber 12 under the action of the anti-rotation component, the sleeve 52 drives the body 21 and the adjusting rod 22 to slide along the axis of the piston chamber 12, thereby adjusting the compression stroke of the first reaction part and the second reaction part, and thus realizing the adjustment of the pedal force and the pedal stroke 200. This electric pedal simulator only requires the driver to control the actuator 51 in the cockpit to realize the function of adjusting the relationship between the pedal force and the pedal stroke 200 at any time.

[0044] Optionally, the anti-rotation component includes a first anti-rotation component and a second anti-rotation component. The first anti-rotation component restricts the body 21 to slide only within the piston cavity 12 along its axis, and the second anti-rotation component restricts the guide rod to slide only within the through hole along its axis. Specifically, the first anti-rotation component can be a sliding pin, the cavity wall of the piston cavity 12 has a groove along its axis, the body 21 has a limiting groove along its axis, and the sliding pin is inserted into the limiting groove and slides in cooperation with the groove. The first anti-rotation component can be a sliding pin, but is not limited to a sliding pin. The second anti-rotation component has the same structure as the first anti-rotation component.

[0045] Optionally, the thread direction at the other end of the body 21 is opposite to that at the other end of the adjusting rod 22, and the pitch of the thread at the other end of the body 21 is the same as that of the thread at the other end of the adjusting rod 22. In this embodiment, the above-mentioned arrangement causes the sleeve 52 to drive the body 21 and the adjusting rod 22 to adjust in opposite directions. Since the movement of the body 21 affects not only the compression stroke of the second reaction part but also the compression stroke of the first reaction part, the above-mentioned arrangement causes the sleeve 52 to drive the body 21 and the adjusting rod 22 to adjust in opposite directions, and the movement distance of the body 21 and the adjusting rod 22 is the same. Therefore, by how much the compression stroke of the body 21 on the first reaction part decreases, the compression stroke of the adjusting rod 22 on the first reaction part increases by the same amount. This ensures that the compression stroke of the first reaction part does not change. Specifically, the first reaction part corresponds to the first half of the pedal 200's stroke, and the second reaction part corresponds to the second half of the pedal 200's stroke. Therefore, the electric pedal simulator can only adjust the second half of the pedal 200's stroke.

[0046] Optionally, the electric pedal simulator also includes a housing 6, with the simulation block 1 fixedly mounted on the housing 6. A sleeve 52 is rotatably fitted to the housing 6, and a driver 51 drives the sleeve 52 to rotate. In this embodiment, the sleeve 52 is rotatably mounted on the housing 6 via a bearing 53. The driver 51 includes a motor and a reducer. The output shaft of the motor is geared to the input shaft of the reducer, and the output shaft of the reducer meshes with the teeth on the outer peripheral wall of the sleeve 52. Specifically, the outer peripheral wall of the sleeve 52 is provided with gears. The function of the reducer is to reduce the motor speed and increase the torque of the reducer output shaft. In other embodiments, the reducer and sleeve 52 can also be driven by a chain or a worm gear (the outer peripheral wall of the sleeve 52 is provided with worm gear teeth. The output shaft of the reducer is fixedly connected to the worm, and the worm meshes with the worm wheel), etc.

[0047] Optionally, the first reaction part includes a first elastic member 31 and a retainer 32. The retainer 32 is provided with a guide hole, and the first elastic member 31 is disposed in the guide hole. One end of the first elastic member 31 abuts against the retainer 32, and the other end of the first elastic member 31 abuts against the adjusting rod 22. When the second reaction part is not pressurized by the pressure oil flowing into the piston chamber 12, the retainer 32 and the body 21 are spaced apart. In this embodiment, one end of the guide hole is opposite to the body 21, and the other end is opposite to the second reaction part. The other end of the guide hole is constricted, so that one end of the first elastic member 31 extends into the guide hole and abuts against the other end of the guide hole.

[0048] Optionally, the first reaction part further includes a guide rod 33, which includes a rod body 331 and a rod head 332 fixedly connected to one end of the rod body 331. The other end of the rod body 331 passes through a guide hole and is fixedly connected to the adjusting rod 22. The rod head 332 is located outside the guide hole and prevents the retainer 32 from coming out of the other end of the rod body 331. In this embodiment, the rod body 331 enters the guide hole through a constriction and is then fixedly connected to the adjusting rod 22 inserted into the guide hole. The rod head 332 is located outside the guide hole and prevents the retainer 32 from coming out of the other end of the rod body 331. The diameter of the rod head 332 is larger than the diameter of the constriction.

[0049] Specifically, the rod 331 and the adjusting rod 22 can be riveted, snap-fitted, or screwed together.

[0050] Optionally, the first reaction part further includes a first rubber pad 34, which is disposed on the body 21 and opposite to the retainer 32. In this embodiment, the second reaction part causes the retainer 32 to move. When the retainer 32 abuts against the body 21, the second reaction part itself begins to compress. To ensure a smooth transition from compression of the first reaction part to compression of the second reaction part, the first rubber pad 34 is disposed on the body 21 and opposite to the retainer 32. Before the retainer 32 abuts against the body 21, the retainer 32 first abuts against the first rubber pad 34, causing the first rubber pad 34 to undergo elastic deformation until the retainer 32 abuts against the body 21. Thus, the first rubber pad 34 can ensure a smooth transition when the compression of the first reaction part changes to compression of the second reaction part.

[0051] Optionally, the first reaction part further includes a first sealing ring 35. A first limiting groove is provided on the peripheral wall of the body 21 opposite to the adjusting rod 22 or on the peripheral wall of the adjusting rod 22 opposite to the body 21. The first sealing ring 35 is disposed in the first limiting groove and simultaneously abuts against the body 21 and the adjusting rod 22. In this embodiment, the sealing ring can prevent external dust and other contaminants from entering the piston chamber 12 through the gap between the adjusting rod 22 and the body 21.

[0052] Optionally, the second reaction part includes a piston and a second elastic element 42. The piston is slidably disposed in the piston chamber 12. The pressure oil supplied by the oil cylinder 100 pressurizes the piston. One end of the second elastic element 42 abuts against the piston, and the other end abuts against the retainer 32. The elastic coefficient of the second elastic element 42 is greater than that of the first elastic element 31. In this embodiment, under the action of the pressure oil, the piston slides along the axis of the piston chamber 12, thereby driving the retainer 32 to move through the second elastic element 42. Since the elastic coefficient of the second elastic element 42 is greater than that of the first elastic element 31, the retainer 32 will not undergo elastic deformation before abutting against the body 21. Specifically, both the first elastic element 31 and the second elastic element 42 are helical springs.

[0053] Optionally, the second reaction part further includes a second rubber pad 43, which is disposed on the piston and opposite to the rod head 332. In this embodiment, when the second elastic member 42 is compressed until the rod head 332 abuts against the second rubber block, as the second elastic member 42 continues to be compressed, the second rubber block undergoes elastic deformation until the piston abuts against the body 21. During this process, the force fed back to the spring plate by the first elastic member 31, the second elastic member 42, the first rubber pad 34, and the second rubber pad 43 is the maximum force value that the electric pedal simulator can feed back.

[0054] Optionally, the second reaction part further includes a second sealing ring 44. A second limiting groove is provided on the cavity wall of the piston chamber 12 or the peripheral wall of the piston. The second sealing ring 44 is disposed in the second limiting groove and simultaneously abuts against the simulation block 1 and the piston. In this embodiment, the second sealing ring 44 can prevent pressurized oil from entering from the end of the piston chamber 12 near the oil hole 11 to the end near the cap 2, thereby affecting the normal operation of the electric pedal simulator.

[0055] Optionally, a protrusion 411 is provided on the surface of the piston opposite to the oil hole 11. In this embodiment, when the protrusion 411 abuts against the cavity wall of the piston chamber 12 where the oil hole 11 is provided, the piston and the cavity wall of the piston chamber 12 where the oil hole 11 is provided are spaced apart, thereby preventing the piston from being flat and sealed against the cavity wall of the piston chamber 12 where the oil hole 11 is provided, which would affect the performance during startup.

[0056] Example 2

[0057] This embodiment is basically the same as Embodiment 1, except that the thread pitch at the other end of the body 21 and the thread pitch at the other end of the adjusting rod 22 are different. In this embodiment, the sleeve 52 drives the body 21 and the adjusting rod 22 to adjust in opposite directions. Since the movement of the body 21 affects not only the compression stroke of the second reaction part but also the compression stroke of the first reaction part, the above-mentioned arrangement causes the sleeve 52 to drive the body 21 and the adjusting rod 22 to adjust in opposite directions, and the movement distances of the body 21 and the adjusting rod 22 are different. Therefore, the first reaction part corresponds to the first half of the pedal 200 stroke, and the second reaction part corresponds to the second half of the pedal 200 stroke. Therefore, this electric pedal simulator can realize differentiated adjustment of the first half and the second half of the pedal 200 stroke, thus enabling adjustment of multiple modes of the entire pedal 200 stroke.

[0058] like Figure 4 As shown, the pedal's working process includes the following stages:

[0059] Phase 1a: Pressing the pedal 200 overcomes the resistance (spring, friction, etc.) of the cylinder 100 to start. After the pedal piston 41 in the cylinder 100 slides through the free stroke, the pressurized oil in the cylinder 100 enters the piston chamber 12 through the oil hole 11, which will push the piston 41 to move, and then enter Phase 2b.

[0060] Phase 2b: The piston 41 moves by overcoming the frictional resistance of the sealing ring and the compressive force of the first elastic element 31 until the cage 32 comes into contact with the body 21. During this phase, the stroke increases, but the reaction force increases only slightly.

[0061] Phase 3c: Since the position of the retainer 32 is fixed, the second elastic element 42 begins to be compressed, and the feedback force of the pedal 200 begins to increase significantly.

[0062] Fourth stage d: The rod head 332 abuts against the second rubber pad 43, causing the second rubber pad 43 to undergo elastic deformation, and the braking force increases significantly until the piston 41 abuts against the body 21.

[0063] The second stage (b), third stage (c), and fourth stage (d) are fed back by the electric pedal simulator. Therefore, drivers with different driving habits can adjust the working state of the electric pedal simulator in the second stage (b), third stage (c), and fourth stage (d) by turning the main body 21 and the adjustment lever 22 through the drive assembly.

[0064] like Figure 5 As shown, the first curve e is the curve between the pedal force feedback and the pedal 200 stroke of the electric pedal simulator before adjustment; the second curve f and the third curve g are the curves between the pedal force feedback and the pedal 200 stroke after the body 21 and the adjusting rod 22 are adjusted by the driver 51 in Embodiment 1; the fourth curve h and the fifth curve i are the curves between the pedal force feedback and the pedal 200 stroke after the body 21 and the adjusting rod 22 are adjusted by the driver 51 in Embodiment 2.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An electric pedal simulator, characterized in that, include: The simulation block (1) is provided with an oil hole (11) and a piston chamber (12) communicating with the oil hole (11). The oil hole (11) is used to receive the pressure oil in the cylinder (100) caused by the pedal force. The simulation block (1) has an opening at one end away from the oil hole (11), and the opening is coaxially connected with the piston chamber (12). The cap (2) includes a body (21) and an adjusting rod (22). One end of the body (21) extends into the opening and slides along the axial direction of the piston cavity (12). The body (21) is provided with a through hole along the axial direction of the piston cavity (12). One end of the adjusting rod (22) extends into the piston cavity (12) through the through hole. The first reaction part and the second reaction part are both disposed in the piston chamber (12). The first reaction part is elastic along the axis of the piston chamber (12) and one end abuts against the adjusting rod (22). The second reaction part is elastic along the axis of the piston chamber (12) and abuts against the other end of the first reaction part. The second reaction part is configured to compress the first reaction part by pressurizing it with the pressure oil flowing into the piston chamber (12), and then the second reaction part compresses itself. The drive assembly includes a driver (51), a sleeve (52), and an anti-rotation component. The sleeve (52) is fitted onto both the other end of the body (21) and the other end of the adjusting rod (22). The sleeve (52) is screwed to both the other end of the body (21) and the other end of the adjusting rod (22). The anti-rotation component prevents the body (21) and the adjusting rod (22) from rotating around the axis of the piston chamber (12). The driver (51) drives the sleeve (52) to rotate. The distance between the adjusting rod (22) and the oil hole (11) can be adjusted to adjust the compression stroke of the first reaction part (3), and the distance between the body and the oil hole (11) can be adjusted to adjust the compression stroke of the first reaction part (3) and the second reaction part (4) at the same time.

2. The electric pedal simulator according to claim 1, characterized in that, The thread direction at the other end of the body (21) is opposite to that at the other end of the adjusting rod (22), and the pitch of the thread at the other end of the body (21) is the same as that of the thread at the other end of the adjusting rod (22).

3. The electric pedal simulator according to claim 1, characterized in that, The thread direction at the other end of the body (21) is opposite to that at the other end of the adjusting rod (22), and the pitch of the thread at the other end of the body (21) is different from that of the thread at the other end of the adjusting rod (22).

4. The electric pedal simulator according to claim 1, characterized in that, The electric pedal simulator also includes a housing (6), the simulation block (1) is fixed to the housing (6), the sleeve (52) is rotatably engaged with the housing (6), and the driver (51) drives the sleeve (52) to rotate.

5. The electric pedal simulator according to any one of claims 1-4, characterized in that, The first reaction part includes a first elastic element (31) and a retainer (32). The retainer (32) is provided with a guide hole. The first elastic element (31) is disposed in the guide hole. One end of the first elastic element (31) abuts against the retainer (32), and the other end of the first elastic element (31) abuts against the adjusting rod (22). When the second reaction part is not pressurized by the pressure oil flowing into the piston chamber (12), the retainer (32) and the body (21) are spaced apart.

6. The electric pedal simulator according to claim 5, characterized in that, The first reaction part also includes a guide rod (33), which includes a rod body (331) and a rod head (332) fixed to one end of the rod body (331). The other end of the rod body (331) passes through the guide hole and is fixed to the adjusting rod (22). The rod head (332) is located outside the guide hole and prevents the retainer (32) from coming out of the other end of the rod body (331).

7. The electric pedal simulator according to claim 5, characterized in that, The first reaction part also includes a first rubber pad (34), which is disposed on the body (21) and opposite to the retainer (32).

8. The electric pedal simulator according to claim 6, characterized in that, The second reaction part includes a piston and a second elastic element (42). The piston is slidably disposed in the piston chamber (12). The pressure oil supplied by the oil cylinder (100) pressurizes the piston. One end of the second elastic element (42) abuts against the piston, and the other end abuts against the retainer (32). The elastic coefficient of the second elastic element (42) is greater than that of the first elastic element (31).

9. The electric pedal simulator according to claim 8, characterized in that, The second reaction part also includes a second rubber pad (43), which is disposed on the piston and opposite to the rod head (332).

10. The electric pedal simulator according to claim 8, characterized in that, The piston has a protrusion (411) on the surface opposite to the oil hole (11).

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