Pedal simulator

Abstract

The present application relates to the technical field of pedal simulator, and particularly discloses a pedal simulator, which comprises a simulation block, a cap, a first counterforce part and a second counterforce part, when a driver steps on the pedal, in the first half of the pedal stroke, the second counterforce part drives the first counterforce part to compress, in the second half of the pedal stroke, at this time, the first counterforce part has reached the maximum compression amount, and then the second counterforce part is compressed by itself. When it is necessary to adjust the relationship between the pedal force and the stroke, the distance between the adjusting body and the adjusting rod and the oil hole is adjusted, and then the compression stroke of the first counterforce part and the second counterforce part can be adjusted, and thus the adjustment of the pedal stroke and the pedal force of the pedal simulator can be realized without replacing hardware.

Description

Technical Field

[0001] This invention relates to the field of pedal simulator technology, and more particularly to 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), which leads to complex adjustment, high adjustment costs, and is not conducive to improving the user experience.

[0005] There is an urgent need for a pedal simulator that can adjust the relationship between pedal travel and pedal force without replacing the pedal simulator hardware. Summary of the Invention

[0006] The purpose of this invention is to provide a pedal simulator to solve the problem that in related technologies, pedal simulators require hardware replacement to adjust the brake pedal force and travel, which leads to complex adjustment, high adjustment cost, and is not conducive to improving the user experience.

[0007] This invention provides a 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. The body extends into the opening and has two states relative to the simulation block: sliding relative to the piston chamber and being relatively fixed relative to the piston chamber. The body is provided with a through hole, and the adjusting rod extends into the piston chamber through the through hole. The adjusting rod has two states relative to the body: sliding relative to the body and being relatively fixed relative to the body along the axis of the piston chamber.

[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 compression stroke of the first reaction force part can be adjusted by adjusting the distance between the adjusting rod and the oil hole, and the compression stroke of the first reaction force part and the second reaction force part can be adjusted by adjusting only the distance between the main body and the oil hole.

[0012] As a preferred technical solution for a pedal simulator, the cap includes a body and an adjusting rod. The body is screwed to the inner wall of the opening. The body is provided with a threaded hole. The adjusting rod extends into the piston chamber through the threaded hole and abuts against the other end of the first reaction force part. The adjusting rod is screwed to the threaded hole.

[0013] As a preferred technical solution for a 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.

[0014] As a preferred technical solution for the 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.

[0015] As a preferred technical solution for the pedal simulator, the first reaction part further includes a first rubber pad, which is disposed on the body and opposite to the retainer.

[0016] As a preferred technical solution for the pedal simulator, the first reaction part further includes a first sealing ring. The peripheral wall of the body opposite to the adjusting rod or the peripheral wall of the adjusting rod opposite to the body is provided with a first limiting groove. The first sealing ring is disposed in the first limiting groove and simultaneously abuts against the body and the adjusting rod.

[0017] As a preferred technical solution for a 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.

[0018] As a preferred technical solution for a pedal simulator, the second reaction part further includes a second rubber pad, which is disposed on the piston and opposite to the rod head.

[0019] As a preferred technical solution for the pedal simulator, the second reaction part further includes a second sealing ring, and the cavity wall of the piston chamber or the peripheral wall of the piston is provided with a second limiting groove. The second sealing ring is disposed in the second limiting groove and simultaneously abuts against the simulation block and the piston.

[0020] As a preferred technical solution for a pedal simulator, the piston has a protrusion on the surface opposite to the oil hole.

[0021] As a preferred technical solution for the pedal simulator, the body is screwed to the inner wall of the piston cavity along the axial direction of the piston cavity, the through hole is a threaded hole, and the adjusting rod is screwed to the threaded hole.

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

[0023] This invention provides a pedal simulator, which includes a simulation block, a cap, a first reaction part, and a second reaction part. 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. The body extends into the opening and has two states with the simulation block: sliding relative to the piston chamber axis and being relatively fixed. The body is provided with a through hole, through which the adjusting rod extends into the piston chamber. The adjusting rod has two states: sliding relative to the body and being relatively fixed relative to the body along the piston chamber axis. The first reaction part and the second reaction part are both provided in the piston chamber. The first reaction part is elastic along the piston chamber axis and abuts against the adjusting rod at one end. The second reaction part is elastic along the piston chamber axis 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 the second reaction part compresses itself. When the driver depresses the pedal, in the first half of the pedal travel, the second reaction part drives the first reaction part to compress. In the second half of the pedal travel, the first reaction part reaches its maximum compression, and then the second reaction part compresses itself. When it is necessary to adjust the relationship between pedal force and travel, the distance between the main body and the adjusting rod and the oil inlet is adjusted, thereby adjusting the compression travel of the first and second reaction parts. This allows for adjustment of the pedal travel and pedal force of the pedal simulator without replacing any hardware. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the pedal simulator in an embodiment of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the pedal simulator in an embodiment of the present invention. Figure 2 ;

[0026] Figure 3 This is a graph showing the pedal travel and pedal force at each stage in an embodiment of the present invention;

[0027] Figure 4 The graphs show the pedal travel versus pedal force under different conditions in the embodiments of the present invention.

[0028] In the picture:

[0029] 100. Hydraulic cylinder; 200. Pedal;

[0030] 1. Simulation block; 11. Oil hole; 12. Piston chamber;

[0031] 2. Cap; 21. Body; 22. Adjusting rod;

[0032] 3. First reaction part; 31. First elastic element; 32. Cage; 33. Guide rod; 331. Rod body; 332. Rod head; 34. First rubber pad; 35. First sealing ring;

[0033] 4. Second reaction part; 41. Piston; 411. Protrusion; 42. Second elastic element; 43. Second rubber gasket; 44. Second sealing ring;

[0034] a) Phase 1; b) Phase 2; c) Phase 3; d) Phase 4;

[0035] 5. First curve; 6. Second curve; 7. Third curve; 8. Fourth curve; 9. Fifth curve. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] like Figure 1 As shown, this embodiment provides a pedal simulator, which includes a simulation block 1, a cap 2, a first reaction force part 3, and a second reaction force part 4. 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 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. The body 21 extends into the opening and is screwed to the inner wall of the opening. The body 21 is along the axis of the piston chamber 12. A threaded hole is provided in the piston chamber 12, through which the adjusting rod 22 extends and is screwed into the threaded hole. A first reaction part 3 and a second reaction part 4 are both located in the piston chamber 12. The first reaction part 3 is elastic along the axis of the piston chamber 12 and one end abuts against the adjusting rod 22. The second reaction part 4 is elastic along the axis of the piston chamber 12 and abuts against the other end of the first reaction part 3. The second reaction part 4 is configured to compress the first reaction part 3 after being pressurized by pressurized oil flowing into the piston chamber 12, and then compress itself. When the driver depresses the pedal 200, in the first half of the pedal travel, the second reaction part 4 drives the first reaction part 3 to compress. In the second half of the pedal travel, the first reaction part 3 has reached its maximum compression value, and then the second reaction part 4 compresses itself. When it is necessary to adjust the relationship between pedal force and stroke, the main body 21 and the adjusting rod 22 are turned respectively, thereby adjusting the compression stroke of the first reaction part 3 and the second reaction part 4. This allows for the adjustment of the pedal stroke and pedal force of the pedal simulator without replacing the hardware.

[0041] Optionally, the first reaction part 3 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 4 is not pressurized by the pressure oil flowing into the piston chamber, 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 4. 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.

[0042] Optionally, the first reaction part 3 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.

[0043] Specifically, the rod 331 and the adjusting rod 22 can be riveted, snap-fitted, or screwed together.

[0044] Optionally, the first reaction part 3 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 4 moves the retainer 32. When the retainer 32 abuts against the body 21, the second reaction part 4 begins to compress. To ensure a smooth transition from compression of the first reaction part 3 to compression of the second reaction part 4, 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 allows for a smooth transition when the compression of the first reaction part 3 shifts to compression of the second reaction part 4.

[0045] Optionally, the first reaction part 3 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 through the gap between the adjusting rod 22 and the body 21.

[0046] Optionally, the second reaction part 4 includes a piston 41 and a second elastic element 42. The piston 41 is slidably disposed in the piston cavity. The pressure oil supplied by the oil cylinder 100 pressurizes the piston 41. One end of the second elastic element 42 abuts against the piston 41, 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 41 slides along the axis of the piston cavity, 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 it abuts against the body 21. Specifically, both the first elastic element 31 and the second elastic element 42 are helical springs.

[0047] Optionally, the second reaction part 4 further includes a second rubber pad 43, which is disposed on the piston 41 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 41 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 pedal simulator can feed back.

[0048] Optionally, the second reaction part 4 further includes a second sealing ring 44. A second limiting groove is provided on the cavity wall of the piston chamber or the peripheral wall of the piston 41. The second sealing ring 44 is disposed in the second limiting groove and simultaneously abuts against the simulation block 1 and the piston 41. In this embodiment, the second sealing ring 44 can prevent pressurized oil from entering from the end of the piston chamber near the oil hole 11 to the end near the cap 2, thereby affecting the normal operation of the pedal simulator.

[0049] Optionally, the piston 41 has a protrusion 411 on the surface opposite to the oil hole 11. In this embodiment, when the protrusion 411 abuts against the wall of the piston cavity where the oil hole 11 is provided, the piston 41 is spaced apart from the wall of the piston cavity where the oil hole 11 is provided, thereby preventing it from sticking flat and sealing against the wall of the piston cavity where the oil hole 11 is provided, which would affect the performance during startup.

[0050] like Figure 2 and 3 As shown, the pedal's working process includes the following stages:

[0051] 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.

[0052] 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 abuts against the body 21. This phase involves an increase in stroke but a very small increase in reaction force. In phase 2b, the first elastic element 31 is compressed for a length of S1.

[0053] Third stage c: 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. In the third stage c, the length of compression of the second elastic element 42 is S2.

[0054] 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. In the fourth stage d, the piston 41 moves a distance of S3-S2.

[0055] The second stage (b), third stage (c), and fourth stage (d) are fed back by the pedal simulator. Therefore, drivers with different driving habits can adjust the pedal simulator's working state in the second stage (b), third stage (c), and fourth stage (d) by turning the main body 21 and the adjustment lever 22.

[0056] like Figure 2 As shown, specifically, in this patent, the pedal simulator is adjusted by adjusting the distance S1 between the retainer 32 and the body 21 and the distance S2 between the guide rod 33 and the second rubber pad 43. When the first elastic element 31 is compressed, it corresponds to the first half of the pedal travel; when the second elastic element 42 is compressed, it corresponds to the second half of the pedal travel.

[0057] The adjustment method is as follows:

[0058] When the pedal travel feels too soft in the first half, the compression stroke of the first elastic element 31 can be shortened by turning the adjustment lever 22, thereby increasing the speed of pedal force feedback and making the pedal travel feel harder in the first half.

[0059] Conversely, when the pedal travel feels too hard in the first half, the compression stroke of the first elastic element 31 can be increased by turning the adjusting rod 22, thereby reducing the speed of pedal force feedback and making the pedal travel feel softer in the first half.

[0060] When the pedal travel feels softer in the latter half and just right in the first half, turning the main body 21 reduces the distance S1, shortening the compression stroke of the second elastic element 42 and increasing the speed of pedal force feedback, thus making the pedal travel feel harder in the latter half. However, because the rotation of the main body 21 moves the adjusting rod 22, the compression stroke of the first elastic element 31 changes. Turning the adjusting rod 22 then keeps the compression stroke of the first elastic element 31 constant. At this point, the pedal travel feels harder in the latter half while remaining unchanged in the first half.

[0061] Conversely, when the pedal travel feels too firm in the latter half and just right in the first half, turning the main body 21 increases the distance of S1, thereby increasing the compression stroke of the second elastic element 42 and reducing the acceleration of the pedal force feedback, thus making the pedal travel feel softer in the latter half. However, because the rotation of the main body 21 moves the adjusting rod 22, the compression stroke of the first elastic element 31 changes. Turning the adjusting rod 22 then keeps the compression stroke of the first elastic element 31 constant. At this point, the pedal travel feels softer in the latter half while remaining unchanged in the first half.

[0062] When the pedal travel needs to be adjusted for both the first and second halves, first turn the main body 21 to adjust the second half of the pedal travel, then turn the adjusting rod 22 to adjust the first half of the pedal travel.

[0063] like Figure 4 As shown, curve 5 represents the original pedal travel and pedal feedback force of the pedal simulator at the factory. Curve 6 represents the pedal travel and pedal feedback force after both the first and second halves of the pedal travel have been hardened. Curve 7 represents the pedal travel and pedal feedback force after the first half of the pedal travel has not been adjusted and the second half has been hardened. Curve 8 represents the pedal travel and pedal feedback force after the first half of the pedal travel has not been adjusted and the second half has been softened. Curve 9 represents the pedal travel and pedal feedback force after both the first and second halves of the pedal travel have been softened.

[0064] 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. A 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). The body (21) extends into the opening and has two states relative to the simulated block (1): sliding relative to the piston cavity (12) and fixed relative to the simulated block (1). The body is provided with a through hole. The adjusting rod (22) extends into the piston cavity (12) through the through hole. The adjusting rod (22) has two states relative to the body (21): sliding relative to the body (21) and fixed relative to the body (21) along the axis of the piston cavity (12). The first reaction part (3) and the second reaction part (4) are both disposed in the piston chamber (12). The first reaction part (3) is elastic along the axis of the piston chamber (12) and one end abuts against the adjusting rod (22). The second reaction part (4) is elastic along the axis of the piston chamber (12) and abuts against the other end of the first reaction part (3). The second reaction part (4) is configured to compress the first reaction part (3) by pressurizing the pressure oil flowing into the piston chamber (12), and then the second reaction part (4) compresses itself. In this way, by adjusting the distance between the adjusting rod (22) and the oil hole (11), the compression stroke of the first reaction part (3) can be adjusted; by adjusting only the distance between the body and the oil hole (11), the compression strokes of the first reaction part (3) and the second reaction part (4) can be adjusted simultaneously. The body (21) is screwed to the inner wall of the piston cavity (12) along the axial direction of the piston cavity (12), the through hole is a threaded hole, and the adjusting rod (22) is screwed to the threaded hole; When it is necessary to adjust the relationship between pedal force and stroke, the main body (21) and the adjusting rod (22) are turned respectively, thereby adjusting the compression stroke of the first reaction part (3) and the second reaction part (4), realizing the adjustment of pedal stroke and pedal force of the pedal simulator without replacing hardware.

2. The pedal simulator according to claim 1, characterized in that, The first reaction part (3) 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 provided 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 (4) is not pressurized by the pressure oil flowing into the piston chamber (12), the retainer (32) and the body (21) are spaced apart.

3. The pedal simulator according to claim 2, characterized in that, The first reaction part (3) further includes a guide rod (33), the guide rod (33) 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).

4. The pedal simulator according to claim 2, characterized in that, The first reaction part (3) further includes a first rubber pad (34), which is disposed on the body (21) and opposite to the retainer (32).

5. The pedal simulator according to claim 1, characterized in that, The first reaction part (3) further includes a first sealing ring (35). The peripheral wall of the body (21) opposite to the adjusting rod (22) or the peripheral wall of the adjusting rod (22) opposite to the body (21) is provided with a first limiting groove. The first sealing ring (35) is disposed in the first limiting groove and simultaneously abuts against the body (21) and the adjusting rod (22).

6. The pedal simulator according to claim 3, characterized in that, The second reaction part (4) includes a piston (41) and a second elastic member (42). The piston (41) is slidably disposed in the piston chamber (12). The pressure oil supplied by the oil cylinder (100) pressurizes the piston (41). One end of the second elastic member (42) abuts against the piston (41), and the other end abuts against the retainer (32). The elastic coefficient of the second elastic member (42) is greater than the elastic coefficient of the first elastic member (31).

7. The pedal simulator according to claim 6, characterized in that, The second reaction part (4) also includes a second rubber pad (43), which is disposed on the piston (41) and opposite to the rod head (332).

8. The pedal simulator according to claim 6, characterized in that, The second reaction part (4) also includes a second sealing ring (44). The cavity wall of the piston chamber (12) or the peripheral wall of the piston (41) is provided with a second limiting groove. The second sealing ring (44) is disposed in the second limiting groove and simultaneously abuts against the simulation block (1) and the piston (41).

9. The pedal simulator according to claim 6, characterized in that, The piston (41) has a protrusion (411) on the surface opposite to the oil hole (11).

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