Pedal force simulation device, braking system and vehicle

Abstract

The utility model relates to a pedal force simulation device, a braking system and a vehicle. The pedal force simulation device comprises a cylinder body, a pedal cavity, a main runner, a branch runner and a simulation cavity, the floating valve is provided with a communicating hole penetrating through the floating valve, the communicating hole communicates with the main flow channel and the branch flow channel, the floating valve is further provided with a blocking part arranged in the branch flow channel, and the blocking part is provided with a communicating flow channel communicating with the branch flow channel; the pedal force simulation device has a braking state and a loosening state which are mutually switched, and in the braking state, the plugging part slides to disconnect the main flow channel and the communication flow channel; and in the loosening state, the plugging part slides to enable the main flow channel to be communicated with the communicating flow channel. The pedal force simulation device provided by the utility model is relatively high in response speed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicle braking, in particular to a pedal force simulation device, a braking system and a vehicle. BACKGROUND

[0002] In the related art, the pedal force simulation device has slow braking response, and the pedal is difficult to rebound quickly after the driver releases the pedal. CONTENT OF THE INVENTION

[0003] The purpose of the present disclosure is to provide a pedal force simulation device, a braking system and a vehicle, which has relatively fast response speed.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides a pedal force simulation device, comprising:

[0005] a cylinder body provided with a pedal cavity, a main flow channel, a branch flow channel and a simulation cavity which are sequentially communicated;

[0006] and a floating valve having a communication hole penetrating through itself, the communication hole communicating the main flow channel and the branch flow channel, the floating valve further having a blocking part provided in the branch flow channel, the blocking part being provided with a communication flow channel communicated with the branch flow channel;

[0007] The pedal force simulation device has a braking state and a release state which are switched with each other, in the braking state, the blocking part slides to disconnect the communication between the main flow channel and the communication flow channel; in the release state, the blocking part slides to make the main flow channel and the communication flow channel communicated.

[0008] Optionally, a first step surface is formed between the main flow channel and the branch flow channel;

[0009] In the braking state, the blocking part abuts against the first step surface; in the release state, the blocking part is spaced from the first step surface, and the spacing space between the blocking part and the first step surface communicates the main flow channel and the communication flow channel.

[0010] Optionally, the blocking part and the branch flow channel have a first communication space formed as the communication flow channel.

[0011] Optionally, a second step surface is formed on the blocking part, in the braking state, the second step surface abuts against the first step surface; in the release state, the second step surface is spaced from the first step surface.

[0012] Optionally, the floating valve comprises a main valve body, the main valve body is arranged in the main flow channel and surrounds the second communication space with the main flow channel.

[0013] Optionally, the main valve body has at least one plane which is arranged in a spaced manner with the inner wall of the main flow channel to form the second communication space.

[0014] Optionally, a limiting member is arranged in the branch flow channel and used to abut against the blocking part to limit the main valve body from exiting the main flow channel.

[0015] Optionally, one of the main valve body and the main flow channel is provided with a guide block, and the other is provided with a guide groove which is in sliding connection with the guide block.

[0016] Optionally, the cylinder further comprises a branch flow channel which communicates the pedal cavity and the simulation cavity and is in parallel connection with the main flow channel and the branch flow channel, and a one-way valve is arranged on the branch flow channel.

[0017] In the braking state, the one-way valve limits the oil in the pedal cavity from entering the simulation cavity through the branch flow channel; and in the releasing state, the one-way valve allows the oil in the simulation cavity to enter the pedal cavity through the branch flow channel.

[0018] On the basis of the above technical solution, the disclosure further provides a brake system comprising the above pedal force simulation device.

[0019] On the basis of the above technical solution, the disclosure further provides a vehicle comprising the above brake system.

[0020] In the pedal force simulation device provided by the disclosure, the floating valve is arranged in sliding connection in the branch flow channel and has a blocking part which can selectively communicate the branch flow channel and the main flow channel according to different positions of the floating valve. Specifically, when the driver steps on the pedal, the pedal force simulation device is switched to the braking state, at this time, the oil flows from the pedal cavity to the simulation cavity, and the blocking part is pushed by the oil to a position which cuts off the communication between the communication flow channel and the main flow channel. Thus, when the pedal is continuously stepped on, the oil in the pedal cavity can only flow into the main flow channel from the branch flow channel through the communication hole arranged on the floating valve, and then flow into the simulation cavity to complete the braking. After the braking is completed, the driver releases the pedal, and the pedal force simulation device is switched to the releasing state, at this time, the oil flows from the simulation cavity to the pedal cavity, and the blocking part is pushed by the oil to a position which communicates the communication flow channel and the main flow channel. Thus, the oil in the simulation cavity can not only flow into the branch flow channel from the main flow channel through the communication hole, but also flow into the branch flow channel from the communication flow channel, and then quickly flow back to the pedal cavity. Therefore, by increasing the total cross-sectional area of the flow channel when the oil flows back, the speed of the oil flowing back from the simulation cavity to the pedal cavity can be improved, the response time of the pedal force simulation device can be reduced, the pedal rebounding effect can be ensured, and the vehicle actuation feedback speed requirement can be met.

[0021] Other features and advantages of the present disclosure will be made clear in the following detailed description of the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, which together with the detailed description, serve to explain the present disclosure. In the drawings:

[0023] Figure 1 is a structural schematic diagram of a pedal force simulation device provided by an embodiment of the present disclosure;

[0024] Figure 2 is Figure 1 is an enlarged schematic diagram of A in FIG. 1;

[0025] Figure 3 is another structural schematic diagram of a pedal force simulation device provided by an embodiment of the present disclosure;

[0026] Figure 4 is Figure 3 is an enlarged schematic diagram of B in FIG. 1;

[0027] Figure 5 is a structural schematic diagram of a floating valve provided by an embodiment of the present disclosure.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1-cylinder; 11-pedal cavity; 12-simulation cavity; 13-main flow channel; 14-branch flow channel; 15-first step surface; 16-branch flow channel; 17-one-way valve; 2-floating valve; 21-plugging part; 211-second step surface; 22-main valve body; 221-flat surface; 23-communication hole; 24-communication flow channel; 241-first communication space; 242-second communication space; 25-separation space; 31-limiting part; 32-guiding block; 33-guiding groove; 41-first piston assembly; 42-first hydraulic cavity; 43-first spring group; 51-second piston assembly; 52-second hydraulic cavity; 53-second spring group; 6-pedal. DETAILED DESCRIPTION

[0030] The detailed description of the specific embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0031] In the present disclosure, the orientation words such as "inner" and "outer" used without the opposite description generally refer to "inner" and "outer" relative to the self contour of the corresponding component, and the terms "first", "second" and the like are used to distinguish one element from another element, without sequence and importance. In addition, in the following description, the same reference signs in different drawings represent the same or similar elements unless otherwise explained. The above definitions are only for the explanation and illustration of the present disclosure, and should not be understood as a limitation of the present disclosure.

[0032] In some embodiments, referring to Figure 1 and Figure 3 As shown, the pedal cavity 11 and the simulation cavity 12 in the pedal force simulation device are respectively provided with a first piston assembly 41 and a second piston assembly 51, and a first hydraulic cavity 42 and a second hydraulic cavity 52 are formed with the pedal cavity 11 and the simulation cavity 12 respectively, wherein the first piston assembly 41 abuts against the inner wall of the pedal cavity 11 through a first spring set 43, the second piston assembly 51 abuts against the inner wall of the simulation cavity 12 through a second spring set 53, and the first hydraulic cavity 42 and the second hydraulic cavity 52 are communicated through the main flow channel 13 and the branch flow channel 14 and filled with brake oil. In actual use, the first piston assembly 41 of the pedal cavity 11 is in transmission connection with the pedal 6, the driver pushes the pedal 6 to drive the first piston assembly 41 to move towards the simulation cavity 12, so as to push the oil in the first hydraulic cavity 42 to the second hydraulic cavity 52 through the main flow channel 13 and the branch flow channel 14, at this time, the first spring set 43 and the second spring set 53 are compressed to provide the driver with brake force feeling feedback, when the driver releases the pedal 6, the first spring set 43 and the second spring set 53 tend to return to the original state to push the oil to flow back from the second hydraulic cavity 52 to the first hydraulic cavity 42, at this time, the first piston assembly 41 also returns to the original position, and the pedal 6 also returns to the original position to prepare for the next braking.

[0033] According to the specific embodiment provided by the present disclosure, referring to Figures 1 to 5 As shown, a pedal force simulation device is provided, comprising a cylinder body 1 provided with a pedal cavity 11, a main flow channel 13, a branch flow channel 14 and a simulation cavity 12 communicated in sequence; and a floating valve 2 having a communication hole 23 penetrating through itself, the communication hole 23 communicating the main flow channel 13 and the branch flow channel 14, the floating valve 2 further having a blocking part 21 arranged in the branch flow channel 14, the blocking part 21 being provided with a communication flow channel 24 communicated with the branch flow channel 14; the pedal force simulation device has a braking state and a release state switched with each other, in the braking state, the blocking part 21 slides to disconnect the communication between the main flow channel 13 and the communication flow channel 24; in the release state, the blocking part 21 slides to make the main flow channel 13 and the communication flow channel 24 communicate.

[0034] According to the technical scheme, in the pedal force simulation device provided by the present disclosure, the floating valve 2 is slidingly arranged in the branch passage 14 and has a blocking part 21, which can selectively communicate the branch passage 14 and the main passage 13 according to different positions. Specifically, when the driver steps on the pedal 6, the pedal force simulation device switches to the braking state, at this time, the oil flows from the pedal cavity 11 to the simulation cavity 12, and the blocking part 21 is pushed by the oil to the position of cutting off the communication between the communication passage 24 and the main passage 13, so that the oil in the pedal cavity 11 can only flow into the main passage 13 from the branch passage 14 through the communication hole 23 arranged on the floating valve 2, and then flow into the simulation cavity 12, thereby completing the braking; after the braking is completed, the driver releases the pedal 6, and the pedal force simulation device switches to the released state, at this time, the oil flows from the simulation cavity 12 to the pedal cavity 11, and the blocking part 21 is pushed by the oil to the position of communicating the communication passage 24 and the main passage 13, so that the oil in the simulation cavity 12 can not only flow into the branch passage 14 from the main passage 13 through the communication hole 23, but also flow into the branch passage 14 from the communication passage 24, and then quickly return to the pedal cavity 11. Therefore, by increasing the total cross-sectional area of the flow passage when the oil returns, the speed of the oil returning from the simulation cavity 12 to the pedal cavity 11 can be improved, the response time of the pedal force simulation device can be reduced, the effect of the pedal 6 following the foot rebound can be ensured, and the requirement of the vehicle actuation feedback speed can be met.

[0035] In the pedal force simulation device provided by the present disclosure, the floating valve 2 can selectively communicate or cut off the communication between the communication passage 24 and the main passage 13 by any suitable means, which is not specifically limited in the present disclosure. As an exemplary embodiment, as shown in Figures 1 to 4 , a first step surface 15 can be formed between the main passage 13 and the branch passage 14; in the braking state (as shown in Figure 1 and Figure 2 ), the blocking part 21 can abut against the first step surface 15; in the released state (as shown in Figure 3 and Figure 4As shown in FIG. 1, the blocking part 21 can be spaced apart from the first step surface 15, and a spacing space 25 between the blocking part 21 and the first step surface 15 communicates the main flow passage 13 and the communication flow passage 24. In this way, by arranging the blocking part 21 in the branch flow passage 14, the blocking part 21 can switch its position according to the flow of the oil in the pedal cavity 11 and the simulation cavity 12. When the oil flows from the pedal cavity 11 to the simulation cavity 12, the blocking part 21 is pushed to abut against the first step surface 15, thereby cutting off the communication flow passage 24 and the main flow passage 13. When the oil flows from the simulation cavity 12 to the pedal cavity 11, the blocking part 21 is pushed to be spaced apart from the first step surface 15, thereby connecting the communication flow passage 24 and the main flow passage 13. The arrangement of the blocking part 21 is simple in structure, and without the need of making a large number of modifications to the structure of the cylinder body 1, the design of the flow passage with different cross-sectional areas in the braking and releasing states can be realized. Compared with the electromagnetic valve arranged in the flow passage, the arrangement is convenient to process and low in cost.

[0036] In some other embodiments, the blocking part 21 can also be arranged in the main flow passage 13. When the pedal force simulation device is in the braking state, the oil flows from the pedal cavity 11 to the simulation cavity 12 through the communication hole 23. When the pedal force simulation device is in the releasing state, the blocking part 21 is pushed by the oil to be outside the main flow passage 13, and the oil flows from the simulation cavity 12 to the pedal cavity 11 through the main flow passage 13. At this time, the communication flow passage 24 is the space occupied by the blocking part 21 in the main flow passage 13. Since the floating valve 2 can also selectively connect or cut off the communication flow passage 24 and the main flow passage 13, the present disclosure does not make a specific limitation in this regard.

[0037] On the basis of the above-mentioned embodiments, the communication flow passage 24 can be constructed in any suitable form, and the present disclosure does not make a specific limitation in this regard. As an exemplary embodiment, referring to Figure 4 and Figure 5 As shown in FIG. 1, the blocking part 21 can be spaced apart from the first step surface 15, and a spacing space 25 between the blocking part 21 and the first step surface 15 communicates the main flow passage 13 and the communication flow passage 24. In this way, by arranging the blocking part 21 in the branch flow passage 14, the blocking part 21 can switch its position according to the flow of the oil in the pedal cavity 11 and the simulation cavity 12. When the oil flows from the pedal cavity 11 to the simulation cavity 12, the blocking part 21 is pushed to abut against the first step surface 15, thereby cutting off the communication flow passage 24 and the main flow passage 13. When the oil flows from the simulation cavity 12 to the pedal cavity 11, the blocking part 21 is pushed to be spaced apart from the first step surface 15, thereby connecting the communication flow passage 24 and the main flow passage 13. The arrangement of the blocking part 21 is simple in structure, and without the need of making a large number of modifications to the structure of the cylinder body 1, the design of the flow passage with different cross-sectional areas in the braking and releasing states can be realized. Compared with the electromagnetic valve arranged in the flow passage, the arrangement is convenient to process and low in cost.

[0038] In some other embodiments, the communication flow channel 24 can also be configured with a through hole axially penetrating through both ends of the blocking part 21 along the branch flow channel 14, the through hole communicates with the branch flow channel 14, when the blocking part 21 abuts against the first step surface 15, the opening of the through hole is sealed by the first step surface 15, the through hole is cut off with the main flow channel 13, when the blocking part 21 is spaced from the first step surface 15 to form the spacing space 25, the opening of the through hole is opened and communicates with the main flow channel 13 through the spacing space 25, which can also achieve the increase of the cross-sectional area of the oil return flow channel, and the present disclosure does not make specific limitations hereon.

[0039] On the basis of the above-mentioned embodiments, referring to Figure 3 and Figure 4 , the second step surface 211 can be formed on the blocking part 21, in the braking state, the second step surface 211 can abut against the first step surface 15, and in the release state, the second step surface 211 can be spaced from the first step surface 15. Among them, the second step surface 211 can ensure the contact area of the blocking part 21 and the first step surface 15, and ensure that the blocking part 21 completely cuts off the communication flow channel 24 and the main flow channel 13 through surface-to-surface contact. In some other embodiments, the blocking part 21 can also be formed with a wavy surface, in the braking state, the wavy surface abuts against the first step surface 15, and in the release state, the wavy surface is spaced from the first step surface 15, which can also achieve the cutting off of the communication flow channel 24 and the main flow channel 13 through point-to-surface contact, and the present disclosure does not make specific limitations hereon.

[0040] In the pedal force simulation device provided by the present disclosure, as an exemplary embodiment, referring to Figure 1 and Figure 5 , the floating valve 2 can also include a main valve body 22, which can be arranged in the main flow channel 13 and surround the second communication space 242 with the main flow channel 13. Among them, the arrangement of the main valve body 22 can improve the reliability of the movement of the blocking part 21 in the branch flow channel 14, the insertion of the main valve body 22 in the main flow channel 13 can make the blocking part 21 move axially along the main flow channel 13, thereby ensuring that the blocking part 21 reliably abuts against the first step surface 15 formed between the main flow channel 13 and the branch flow channel 14. Among them, the arrangement of the second communication space 242 can avoid that the main valve body 22 completely blocks the main flow channel 13, when the main valve body 22 moves towards the main flow channel 13 but does not completely come out of the main flow channel 13, the blocking part 21 forms a spacing space 25 with the main flow channel 13, the main flow channel 13 can communicate with the spacing space 25 through the second communication space 242, and the cross-sectional area of the oil return flow channel is increased.

[0041] On the basis of the above-mentioned embodiments, the second communication space 242 can be configured in any suitable form, and the present disclosure does not make specific limitations hereon. As an exemplary embodiment, referring to Figure 5As shown in FIG. 1, the main valve body 22 can have at least one flat surface 221 which is spaced apart from the inner wall surface of the main flow passage 13 to form a second communication space 242. In the present disclosure, the main valve body 22 is configured as a waist-shaped block, the curved surface of the waist-shaped block can be in contact with or have a small gap with the main flow passage 13, and the flat surface 221 of the waist-shaped block is spaced apart from the inner wall surface of the main flow passage 13 to form the second communication space 242 which communicates the main flow passage 13. When the second step surface 211 is spaced apart from the first step surface 15, the second communication space 242 communicates the main flow passage 13 and the branch flow passage 14.

[0042] In other embodiments, the main valve body 22 can also have a radial cross-sectional area much smaller than that of the main flow passage 13, so that the peripheral surface of the main valve body 22 and the inner wall surface of the main flow passage 13 can also form the second communication space 242. In this case, the second communication space 242 is configured as an annular space around the main valve body 22, and when the second step surface 211 is spaced apart from the first step surface 15, the main flow passage 13 and the branch flow passage 14 can also be communicated, and the present disclosure does not make specific limitations in this regard.

[0043] On the basis of the above-mentioned embodiments, in order to improve the reliability of the sliding of the main valve body 22 in the main flow passage 13, as an exemplary embodiment, reference is made to Figure 2 or Figure 4 As shown in FIG. 1, a limiting member 31 can be arranged in the branch flow passage 14, which can be used to abut against the blocking part 21 to limit the main valve body 22 from exiting the main flow passage 13. In this way, when the brake is completed and the pedal 6 force simulation structure is converted towards the release state, the oil pushes the main valve body 22 to slide out of the main flow passage 13, and at this time, the arrangement of the limiting member 31 can limit the movement stroke of the main valve body 22 to avoid the main valve body 22 from completely exiting the main flow passage 13. In other embodiments, the limiting member 31 can also be arranged on the inner wall of the end of the main flow passage 13 close to the branch flow passage 14, and at this time, a sliding groove can be formed on the main valve body 22 to cooperate with the limiting member 31, and the sliding groove has an end surface which can abut against the limiting member 31, thereby also being able to limit the sliding stroke of the main valve body 22, and the present disclosure does not make specific limitations in this regard.

[0044] On the basis of the above-mentioned embodiments, in order to further improve the reliability of the sliding of the main valve body 22 in the main flow passage 13, as an exemplary embodiment, reference is made to Figure 2 or Figure 4As shown in FIG. 1, one of the main valve body 22 and the main flow channel 13 can be provided with a guide block 32, and the other can be provided with a guide groove 33 which is in sliding connection with the guide block 32. In this way, rotation or vibration of the floating valve 2 during sliding can be avoided. In other embodiments, one of the guide block 32 and the guide groove 33 can also be provided in the branch flow channel 14, and the other can be provided on the blocking part 21, which can also achieve the purpose of improving the reliability of the sliding of the main valve body 22 in the main flow channel 13, and the present disclosure does not make specific limitations thereto.

[0045] In the pedal force simulation device provided by the present disclosure, in order to further improve the response speed of the pedal force simulation device, as an exemplary embodiment, with reference to Figure 3 or Figure 4 As shown in FIG. 1, the cylinder body 1 can also include a branch flow channel 16 which can be in communication with the pedal cavity 11 and the simulation cavity 12, and in parallel with the main flow channel 13 and the branch flow channel 14. The branch flow channel 16 can be provided with a one-way valve 17. In the braking state, the one-way valve 17 can restrict the oil in the pedal cavity 11 from entering the simulation cavity 12 through the branch flow channel 16. In the release state, the one-way valve 17 can allow the oil in the simulation cavity 12 to enter the pedal cavity 11 through the branch flow channel 16. In this way, the provision of the branch flow channel 16 and the one-way valve 17 can further increase the total cross-sectional area of the oil return flow channel, that is, when the pedal 6 force simulation device switches to the release state, the oil needs to return from the simulation cavity 12 to the pedal 6 cavity 11. At this time, the oil can return to the pedal 6 cavity 11 through the main flow channel 13 and the branch flow channel 14, and at the same time, return to the pedal 6 cavity 11 through the branch flow channel 16, thereby further improving the response speed of the pedal 6 force simulation device.

[0046] In summary, the pedal force simulation device is switched to the braking state when the driver steps on the pedal 6, the pedal 6 is in driving connection with the first piston assembly 41, thereby pushing the first piston assembly 41 to move towards the simulation cavity 12, and further pushing the oil in the first hydraulic cavity 42 to flow towards the second hydraulic cavity 52, at this time, the one-way valve 17 blocks the branch flow channel 16, the floating valve 2 slides to the sealing part 21 abutting against the first step surface 15 along with the flow of the oil, the communication between the communication flow channel 24 and the main flow channel 13 is cut off, and the pedal 6 is continuously stepped on, the oil flows into the main flow channel 13 through the communication hole 23 formed in the floating valve 2 and further flows into the simulation cavity 12, and the first spring set 43 and the second spring set 53 are compressed, and the braking is completed. After the braking is completed, the pedal 6 is released, the pedal force simulation device is switched to the released state, the first spring set 43 and the second spring set 53 move towards the original state, the first spring set 43 pushes the second piston assembly 51 to move towards the pedal cavity 11, and further pushes the oil in the second hydraulic cavity 52 to flow towards the first hydraulic cavity 42, at this time, the one-way valve 17 opens the branch flow channel 16, the floating valve 2 slides to the sealing part 21 spaced from the first step surface 15 and forms the spacing space 25 along with the flow of the oil, and the communication flow channel 24 realizes the communication with the main flow channel 13 through the spacing space 25, so that the oil can not only flow into the branch flow channel 14 through the communication hole 23, but also flow into the branch flow channel 14 through the communication space and the spacing space 25, and directly flow into the pedal cavity 11 from the branch flow channel 16, thereby improving the speed of the oil backflow and the response speed of the pedal force simulation device.

[0047] On the basis of the above technical solution, the disclosure further provides a brake system comprising the pedal force simulation device, by electrically connecting the pedal force simulation device with the brake system, the control of the speed of the brake system can be determined according to the position change of the pedal 6. In addition, the pedal force simulation device has all the technical features of the pedal force simulation device described above, and therefore is not described here.

[0048] On the basis of the above technical solution, the disclosure further provides a vehicle comprising the brake system described above, and the brake system has all the technical features of the brake system described above, and therefore is not described here.

[0049] The preferred embodiments of the disclosure are described in detail above in combination with the drawings, but the disclosure is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the disclosure within the technical concept of the disclosure, and these simple modifications all belong to the protection scope of the disclosure.

[0050] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and the disclosure will not be repeated here for various possible combinations.

[0051] In addition, various different embodiments of the disclosure can also be combined with each other as long as they do not contradict the idea of the disclosure, and they should also be considered as disclosed by the disclosure.

Claims

1. A pedal force simulating device characterized by comprising: The pedal force simulation device comprises: a cylinder body provided with a pedal cavity, a main flow channel, a branch flow channel and a simulation cavity which are sequentially communicated; and a floating valve having a communication hole penetrating through the floating valve, the communication hole communicating the main flow channel and the branch flow channel, the floating valve further having a blocking part provided in the branch flow channel, the blocking part being provided with a communication flow channel communicated with the branch flow channel; the pedal force simulation device has a braking state and a releasing state which are switched with each other, in the braking state, the blocking part slides to disconnect the communication between the main flow channel and the communication flow channel, in the releasing state, the blocking part slides to make the main flow channel communicated with the communication flow channel.

2. The pedal feel simulation device according to claim 1, characterized by a first step surface is formed between the main flow channel and the branch flow channel; in the braking state, the blocking part abuts against the first step surface, in the releasing state, the blocking part is spaced apart from the first step surface, the spacing space between the blocking part and the first step surface communicates the main flow channel and the communication flow channel.

3. The pedal feel simulation apparatus according to claim 2, characterized by the blocking part and the branch flow channel have a first communication space, the first communication space is formed as the communication flow channel.

4. The pedal feel simulation apparatus according to claim 2, characterized by a second step surface is formed on the blocking part, in the braking state, the second step surface abuts against the first step surface, in the releasing state, the second step surface is spaced apart from the first step surface.

5. Pedal feel simulator according to any of claims 1-4, characterized in that the floating valve comprises a main valve body, the main valve body is provided in the main flow channel and surrounds a second communication space with the main flow channel.

6. The pedal feel simulation device according to claim 5, characterized by the main valve body has at least one plane, the plane is spaced apart from the inner wall surface of the main flow channel to surround the second communication space.

7. The pedal feel simulation device according to claim 5, characterized by a limiting part is provided in the branch flow channel, the limiting part is used to abut against the blocking part to limit the main valve body from exiting the main flow channel.

8. The pedal feel simulation device according to claim 5, characterized by one of the main valve body and the main flow channel is provided with a guide block, the other is provided with a guide groove, the guide groove is in sliding connection with the guide block.

9. The pedal effort simulation device of claim 1, wherein, the cylinder body further comprises a branch flow channel, the branch flow channel communicates the pedal cavity and the simulation cavity and is parallel to the main flow channel and the branch flow channel, a one-way valve is provided on the branch flow channel, in the braking state, the one-way valve limits the oil in the pedal cavity from entering the simulation cavity through the branch flow channel, in the releasing state, the one-way valve allows the oil in the simulation cavity to enter the pedal cavity through the branch flow channel.

10. A brake system characterized by, The pedal force simulation device according to any one of claims 1-9.

11. A vehicle characterized by comprising: The brake system according to claim 10.

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