Pedal simulator module, brake master cylinder assembly, brake system and vehicle

Abstract

A vehicle (600), which is provided with a brake system (500). The brake system (500) is provided with a brake master cylinder assembly (400), the brake master cylinder assembly (400) being provided with a pedal simulator module (100) and a brake master cylinder (200). The pedal simulator module (100) comprises a base body (1) and a pedal simulator (2), wherein the base body (1) is configured to be mounted on the brake master cylinder (200), and at least one master cylinder docking port (11) is provided on the base body (1) and comprises a first docking port (111), the first docking port (111) being configured to be docked with a first brake fluid interface (51) on the brake master cylinder (200), and the first brake fluid interface (51) being in communication with a first fluid cavity (4) in the brake master cylinder (200). The pedal simulator (2) is provided with a movable piston (21) and a first chamber (22) located on one side of the movable piston (21), and the pedal simulator (2) is mounted on the base body (1), the first docking port (111) being in communication with the first chamber (22).

Description

Pedal simulator module, brake master cylinder assembly, brake system and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202420023203.1, filed with the Patent Office of China on January 2, 2024, entitled “Pedal Simulator Module, Brake Master Cylinder Assembly, Braking System and Vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of braking technology, and in particular, to a pedal simulator module, a brake master cylinder assembly, a braking system, and a vehicle. Background Art

[0004] In a control system, a pedal simulator is typically used to convert the braking force applied by the driver into an electrical signal. This allows the driver to obtain feedback on the braking force while also feeding the magnitude of the braking force back to the controller via a sensor to achieve braking. In related technologies, the master cylinder is connected to the pedal simulator via a separate pipe. This pipe can interfere with components near the master cylinder or the pedal simulator, making layout and installation difficult. Furthermore, the long pipe increases the resistance to the flow of brake fluid between the master cylinder and the pedal simulator, resulting in a stiff braking feel. Furthermore, with continuous braking, the pedal travel can become increasingly shorter, posing the risk of brake failure. Summary of the Invention

[0005] The purpose of the present disclosure is to provide a pedal simulator module, a brake master cylinder assembly, a brake system and a vehicle to solve the above technical problems.

[0006] In order to achieve the above objectives, as a first aspect of the present disclosure, the present disclosure provides a pedal simulator module, comprising:

[0007] A base body is used to be mounted on a brake master cylinder, the base body is provided with at least one master cylinder docking interface, the master cylinder docking interface includes a first docking interface, the first docking interface is used to dock with a first brake fluid interface on the brake master cylinder, and the first brake fluid interface is connected to a first fluid chamber in the brake master cylinder;

[0008] The pedal simulator comprises a movable piston and a first chamber located on one side of the movable piston. The pedal simulator is mounted on the base, and the first docking port is communicated with the first chamber.

[0009] Optionally, the pedal simulator module further includes a switching valve, which is mounted on the base and is used to selectively open or close the flow path between the first docking port and the first chamber.

[0010] Optionally, a first installation cavity and a first flow channel are also provided in the base, the first flow channel includes a first sub-flow channel and a second sub-flow channel, the first docking port is connected to the first sub-flow channel, the first chamber is connected to the second sub-flow channel, the inlet of the switching valve is located in the first installation cavity and is connected to the first sub-flow channel, and the outlet of the switching valve is located in the first installation cavity and is connected to the second sub-flow channel.

[0011] Optionally, the base body is further provided with a first connection port, the first connection port being used to connect to a brake execution unit, and the base body is further provided with a second flow channel;

[0012] One end of the first sub-channel away from the first docking port is connected to the first installation cavity, the inlet of the switching valve is connected to the first installation cavity, one end of the second channel is connected to the first installation cavity, and the other end of the second channel is connected to the first connecting port.

[0013] Optionally, a first connection port is further provided on the base, the first connection port is used to connect to the brake execution unit, a second flow channel is provided in the base, one end of the second flow channel is connected to the first docking port, and the other end of the second flow channel is connected to the first connection port.

[0014] Optionally, the pedal simulator also has a second chamber located on the side of the movable piston away from the first chamber, the master cylinder docking port also includes a second docking port, and a third flow channel is also provided in the base, one end of the third flow channel is connected to the second docking port, and the other end of the third flow channel is connected to the second chamber, and the second docking port is used to dock with the second brake fluid interface on the brake master cylinder, and the second brake fluid interface is connected to the oil tank via the oil guide groove in the brake master cylinder.

[0015] Optionally, a second mounting cavity is also provided in the base, the pedal simulator includes a cylinder body, the movable piston is movably mounted in the second mounting cavity, at least part of the cylinder body is located in the second mounting cavity, one side of the movable piston and the cavity wall of the second mounting cavity jointly define the first cavity, and the other side of the movable piston, the cavity wall of the second mounting cavity and the cylinder body jointly define the second cavity.

[0016] Optionally, the pedal simulator further includes an elastic member, which is located in the second mounting cavity, and one end of the elastic member is connected to the movable piston, and the other end of the elastic member is connected to the cylinder body.

[0017] Optionally, the master cylinder docking port further includes a third docking port, the third docking port is used to dock with a third brake fluid port on the brake master cylinder, the third brake fluid port is communicated with a second fluid chamber in the brake master cylinder, a second connecting port is further provided on the base, the second connecting port is used to connect with a brake execution unit, a fourth flow channel is further provided in the base, the third docking port is communicated with the second connecting port through the fourth flow channel; or,

[0018] The base is provided with an avoidance notch, which is used to expose the third brake fluid interface on the brake master cylinder that is connected to the second fluid chamber in the brake master cylinder, so that the third brake fluid interface can be connected to the brake execution unit through a pipeline.

[0019] Optionally, the switching valve and the pedal simulator are mounted on the same side of the base.

[0020] Optionally, there are multiple master cylinder docking interfaces, and the multiple master cylinder docking interfaces are located on the same side of the base.

[0021] Optionally, the base has a first fitting surface for fitting with the brake master cylinder, the master cylinder docking interface is located on the first fitting surface, and the first fitting surface is formed as a plane.

[0022] Optionally, a sealing groove is provided on the base, the sealing groove is located outside the master cylinder docking interface and is arranged around the master cylinder docking interface, and a sealing ring is installed in the sealing groove.

[0023] Optionally, a mounting portion is provided on the base, and the mounting portion enables the base to be detachably connected to the brake master cylinder.

[0024] Optionally, the mounting portion is a mounting hole formed on the base, and the mounting hole is used for a fastener to pass through.

[0025] As a second aspect of the present disclosure, the present disclosure provides a brake master cylinder assembly, including a brake master cylinder and the above-mentioned pedal simulator module, wherein the brake master cylinder has a first liquid chamber, and the brake master cylinder is provided with at least one brake fluid interface, and the brake fluid interface includes a first brake fluid interface connected to the first liquid chamber, the base of the pedal simulator module is installed on the brake master cylinder, and the first docking port on the base is docked with the first brake fluid interface.

[0026] Optionally, the brake fluid interface further includes a second brake fluid interface, the brake master cylinder has an oil guide groove, the second brake fluid interface is connected to the oil tank via the oil guide groove, the pedal simulator further has a second chamber located on a side of the movable piston away from the first chamber, the second brake fluid interface is connected to the second chamber; and / or,

[0027] The brake fluid interface further includes a third brake fluid interface. The brake master cylinder includes a second fluid chamber in communication with the third brake fluid interface. The third brake fluid interface is used to connect to a brake execution unit.

[0028] Optionally, the brake master cylinder has a second bonding surface that is bonded to the base body, the brake fluid interface is located on the second bonding surface, and the second bonding surface is formed into a plane.

[0029] As a third aspect of the present disclosure, the present disclosure provides a braking system comprising the above-mentioned brake master cylinder assembly and a brake execution unit.

[0030] As a fourth aspect of the present disclosure, the present disclosure provides a vehicle comprising the above-mentioned braking system.

[0031] During vehicle braking, the driver steps on the brake pedal, causing the brake fluid in the first fluid chamber of the brake master cylinder to flow out through the first brake fluid interface, and a first pair of interfaces that dock with the first brake fluid interface is formed on the base. The first pair of interfaces is connected to the first flow channel, so the pressurized brake fluid flowing out of the first brake fluid interface directly enters the first flow channel through the first pair of interfaces, and the first flow channel is connected to the first chamber of the pedal simulator. The brake fluid in the first fluid chamber of the brake master cylinder thus enters the first chamber of the pedal simulator, pushing the moving piston to move, so that the driver obtains feedback of the braking force.

[0032] Through the above technical solution, the pedal simulator is installed on the base, and a first pair of interfaces connected to the first liquid chamber of the brake master cylinder is provided on the base. The first pair of interfaces is connected to the first chamber of the pedal simulator, so that when the base of the pedal simulator module is installed on the brake master cylinder, the first brake fluid interface of the brake master cylinder and the first chamber of the pedal simulator can be connected. There is no need to connect the first brake fluid interface of the brake master cylinder with the first chamber of the pedal simulator through a separate pipeline during the installation process, which simplifies the installation process, reduces the complexity of the pipelines of the braking system, and reduces the length of the connecting flow path between the brake master cylinder and the pedal simulator, so that the flow resistance of the brake fluid between the brake master cylinder and the pedal simulator is reduced. On the one hand, it avoids the situation where the brake foot feels hard, and on the other hand, it can make the moving piston in the pedal simulator return more timely, reducing the risk of brake failure.

[0033] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0035] FIG1 is a schematic diagram of the three-dimensional structure of a pedal simulator module provided in one embodiment of the present disclosure.

[0036] FIG2 is a schematic diagram of the three-dimensional structure of a pedal simulator module provided in one embodiment of the present disclosure (from a different perspective than FIG1 ).

[0037] FIG3 is a side schematic diagram of a pedal simulator module provided in one embodiment of the present disclosure.

[0038] FIG4 is a schematic cross-sectional view along the BB direction in FIG3 .

[0039] FIG5 is a side view schematic diagram of a pedal simulator module provided in an embodiment of the present disclosure (from a different perspective than FIG3 ).

[0040] FIG6 is a schematic cross-sectional view along the DD direction in FIG5 .

[0041] FIG7 is a schematic cross-sectional view along the AA direction in FIG3 .

[0042] FIG8 is a schematic cross-sectional view along the CC direction in FIG3 .

[0043] FIG9 is a schematic top view of a brake master cylinder provided in accordance with an embodiment of the present disclosure.

[0044] FIG10 is a schematic cross-sectional view along the EE direction in FIG9 .

[0045] FIG11 is an exploded schematic diagram of a brake master cylinder assembly provided in one embodiment of the present disclosure.

[0046] FIG12 is an exploded schematic diagram of a brake master cylinder assembly provided in another embodiment of the present disclosure.

[0047] FIG13 is a schematic diagram of pipeline connections of a braking system provided in one embodiment of the present disclosure.

[0048] FIG. 14 is a schematic diagram of a braking system according to an embodiment of the present disclosure.

[0049] FIG15 is a structural block diagram of a vehicle provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0050] The following describes the specific embodiments of the present disclosure in detail with reference to 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 intended to limit the present disclosure.

[0051] In this disclosure, unless otherwise indicated, directional terms such as "upper" and "lower" are generally defined with reference to the drawing orientation of the corresponding drawings. "Inner" and "outer" refer to the inner and outer sides of the corresponding component's outline. Furthermore, the terms "first" and "second," etc., are used solely for purposes of distinction and are not to be construed as indicating or implying relative importance.

[0052] As a first aspect of the present disclosure, as shown in Figures 1 to 8, the present disclosure provides a pedal simulator module 100, comprising a base 1 and a pedal simulator 2. The base 1 is configured to be mounted on a brake master cylinder 200. The base 1 is provided with at least one master cylinder docking port 11, which includes a first docking port 111. The first docking port 111 is configured to dock with a first brake fluid port 51 on the brake master cylinder 200. The first brake fluid port 51 is connected to a first fluid chamber 4 within the brake master cylinder 200. The pedal simulator 2 comprises a movable piston 21 and a first chamber 22 located on one side of the movable piston 21. The pedal simulator 2 is mounted on the base 1, and the first docking port 111 is connected to the first chamber 22.

[0053] During the braking process of the vehicle 600, the driver steps on the brake pedal, causing the brake fluid in the first fluid chamber 4 of the brake master cylinder 200 to flow out through the first brake fluid interface 51, and a first docking interface 111 is formed on the base 1 to dock with the first brake fluid interface 51. The pressurized brake fluid flowing out of the first brake fluid interface 51 directly enters the first chamber 22 of the pedal simulator 2 through the first docking interface 111, and the brake fluid in the first fluid chamber 4 of the brake master cylinder 200 thereby enters the first chamber 22 of the pedal simulator 2, pushing the movable piston 21 to move, so that the driver obtains feedback of the braking force.

[0054] Through the above technical solution, the pedal simulator 2 is installed on the base 1, and a first docking port 111 is provided on the base 1 for docking with the first liquid chamber 4 of the brake master cylinder 200. The first docking port 111 is connected to the first chamber 22 of the pedal simulator 2, so that when the base 1 of the pedal simulator module 100 is installed on the brake master cylinder 200, the first brake fluid interface 51 of the brake master cylinder 200 and the first chamber 22 of the pedal simulator 2 can be connected. There is no need to connect the first brake fluid interface 51 of the brake master cylinder 200 with the first chamber 22 of the pedal simulator 2 through a separate pipeline during the installation process, which simplifies the installation process and reduces the complexity of the pipelines of the braking system 500. In addition, the length of the connecting flow path between the brake master cylinder 200 and the pedal simulator 2 is reduced, so that the flow resistance of the brake fluid between the brake master cylinder 200 and the pedal simulator 2 is reduced. On the one hand, it avoids the situation where the brake foot feels too hard, and on the other hand, it can make the moving piston 21 in the pedal simulator 2 return more timely, reducing the risk of brake failure.

[0055] In order to prevent the control system of the braking system 500 from malfunctioning and causing braking failure of the vehicle 600, the brake master cylinder 200 can also be connected to the brake execution unit 300 of the vehicle 600 to brake the vehicle 600 through hydraulic conduction.

[0056] Here, the present disclosure does not limit the communication method between the first docking port 111 and the first chamber 22. In one embodiment provided in the present disclosure, a first flow channel 12 communicating with the first docking port 111 and the first chamber 22 may be provided in the base 1. In other embodiments, a pipeline may be integrated on the base 1, and the first docking port 111 is connected to the first chamber 22 through the pipeline.

[0057] Optionally, as shown in Figures 4, 13, and 14, the base body 1 is further provided with a first connection port 14 for connecting to the brake actuator unit 300. A second flow channel 17 is provided within the base body 1, one end of the second flow channel 17 being in communication with the first docking port 111, and the other end of the second flow channel 17 being in communication with the first connection port 14. In this way, brake fluid flowing out of the master cylinder 200 can also flow to the brake actuator unit 300 via the first docking port 111, the second flow channel 17, and the first connection port 14, thereby enabling hydraulic conduction to brake the vehicle 600 in the event of a control system failure.

[0058] It should be noted that a shutoff valve for opening or closing the flow path is typically provided at the brake actuating unit 300. This valve disconnects the flow path between the first connecting port 14 and the brake actuating unit 300 when the control system is operating normally, and opens the flow path between the first connecting port 14 and the brake actuating unit 300 when the control system is malfunctioning. This arrangement establishes a connection between the master cylinder 200 and the brake actuating unit 300 to address control system failures.

[0059] Optionally, as shown in Figures 1 to 4, the pedal simulator module 100 may further include a switching valve 3, which is mounted on the base 1 and is used to selectively open or close the flow path between the first docking port 111 and the first chamber 22. When the control system operates normally, the switching valve 3 can be in an open state to connect the first docking port 111 to the first chamber 22, and the brake fluid can flow between the brake master cylinder 200 and the pedal simulator 2. When the control system is abnormal, the switching valve 3 can be in a closed state to disconnect the flow path between the first docking port 111 and the first chamber 22, so that the brake fluid flowing out through the first brake fluid interface 51 on the brake master cylinder 200 can directly enter the brake execution unit 300 of the vehicle 600, thereby ensuring normal braking of the brake system 500 of the vehicle 600.

[0060] Optionally, as shown in FIG. 1 , the switching valve 3 and the pedal simulator 2 may be installed on the same side of the base 1 , so that the overall footprint of the pedal simulator module 100 is smaller and it is easier to install on the brake master cylinder 200 .

[0061] Optionally, as shown in Figures 13 and 14, the switching valve 3 can be a solenoid valve, and a communication interface electrically connected to the control end of the solenoid valve is also formed on the switching valve 3. The communication interface is used to electrically connect to the control module 301 located on the brake execution unit 300.

[0062] Optionally, as shown in Figures 4 and 6, a first mounting cavity 13 and a first flow channel 12 are further provided within the base body 1. The first flow channel 12 includes a first sub-flow channel 121 and a second sub-flow channel 122. The first docking port 111 communicates with the first sub-flow channel 121, and the first chamber 22 communicates with the second sub-flow channel 122. The inlet of the switching valve 3 is located within the first mounting cavity 13 and communicates with the first sub-flow channel 121, while the outlet of the switching valve 3 is located within the first mounting cavity 13 and communicates with the second sub-flow channel 122. Brake fluid enters the first sub-flow channel 121 through the first docking port 111. The first sub-flow channel 121 communicates with the inlet of the switching valve 3. After entering the switching valve 3, the brake fluid flows out of the outlet of the switching valve 3 and enters the first chamber 22 through the second sub-flow channel 122. The first sub-channel 121 is used to connect the first docking port 111 and the first installation cavity 13, and the second sub-channel 122 is used to connect the first installation cavity 13 and the first chamber 22, so that the brake fluid can pass through the switching valve 3 during the flow process, so that the switching valve 3 can cut off or connect the flow path between the first docking port 111 and the first chamber 22 to guide the brake fluid in the brake master cylinder 200 to different directions.

[0063] Optionally, as shown in Figure 4, the end of the first sub-channel 121 away from the first docking port 111 is in communication with the first installation cavity 13, the inlet of the switching valve 3 is in communication with the first installation cavity 13, one end of the second channel 17 is in communication with the first installation cavity 13, and the other end of the second channel 17 is in communication with the first connecting port 14. After the brake fluid enters the first installation cavity 13 through the first sub-channel 121, because the inlet of the switching valve 3 is located within and in communication with the first installation cavity 13, and one end of the second channel 17 is also in communication with the first installation cavity 13, the brake fluid can simultaneously enter the inlet of the switching valve 3 and the second channel 17.

[0064] The switching valve 3 can control whether the brake fluid entering through the inlet flows out through the outlet, thereby controlling whether the brake fluid enters the first chamber 22. The brake fluid flowing into the second flow channel 17 can flow directly to the first connecting port 14 and then into the brake execution unit 300.

[0065] Optionally, as shown in Figures 5 to 7, 10, and 11, the pedal simulator 2 further includes a second chamber 23 located on the side of the movable piston 21 facing away from the first chamber 22. The master cylinder docking port 11 also includes a second docking port 112. A third flow channel 18 is also provided within the base 1. One end of the third flow channel 18 communicates with the second docking port 112, and the other end of the third flow channel 18 communicates with the second chamber 23. The second docking port 112 is configured to interface with the second brake fluid port 52 on the master cylinder 200. The second brake fluid port 52 communicates with the oil tank 201 via the oil guide groove 6 within the master cylinder 200. During operation of the pedal simulator 2, brake fluid flows into or out of the first chamber 22 through the first flow channel 12, and the movable piston 21 moves under hydraulic pressure, causing the volumes of the first chamber 22 and the second chamber 23 to continuously change. The reverse thrust felt by the driver on the pedal is derived from both the rebound force of the elastic member 16 disposed within the second chamber 23 and the fluid resistance of the brake fluid within the second chamber 23.

[0066] A third flow channel 18 is set in the base 1, and the second chamber 23 is connected to the second brake fluid interface 52 on the brake master cylinder 200 through the third flow channel 18, and further connected to the oil tank 201, so that the brake fluid in the second chamber 23 can enter or be discharged from the second chamber 23 as the volume of the chamber changes, thereby always maintaining sufficient brake fluid in the second chamber 23 to provide support for the moving piston 21, so that the driver can get a better pedaling experience.

[0067] To improve the integration of the pedal simulator module 100, optionally, as shown in FIG7 , a second mounting cavity 19 is further provided in the base 1, the pedal simulator 2 includes a cylinder 24, a movable piston 21 is movably mounted in the second mounting cavity 19, at least a portion of the cylinder 24 is located in the second mounting cavity 19, one side of the movable piston 21 and the cavity wall of the second mounting cavity 19 together define a first chamber 22, and the other side of the movable piston 21, the cavity wall of the second mounting cavity 19, and the cylinder 24 together define a second chamber 23. The cavity wall of the second mounting cavity 19 and the cylinder 24 can jointly define the movable range of the movable piston 21, which is divided into the first chamber 22 and the second chamber 23 by the movable piston 21.

[0068] The base 1 and cylinder 24 cooperate to define the range of motion of the movable piston 21 of the pedal simulator 2, reducing manufacturing costs. Furthermore, the second mounting cavity 19 can be machined simultaneously with the manufacture of the base 1, further enhancing the integration of the pedal simulator 2 with the base 1 and further reducing the space occupied by the pedal simulator 2.

[0069] Optionally, the cylinder body 24 can be detachably connected to the base body 1. The present disclosure does not limit the connection method between the cylinder body 24 and the base body 1. For example, the cylinder body 24 can be connected by snapping, threading or riveting.

[0070] Optionally, the pedal simulator 2 further includes an elastic member 16, which is located in the second mounting cavity 19. One end of the elastic member 16 is connected to the movable piston 21, and the other end of the elastic member 16 is connected to the cylinder 24. The elastic member 16 disposed in the second mounting cavity 19 can provide a restoring force for the movable piston 21, thereby causing the movable piston 21 to move toward the first chamber 22, thereby allowing the brake pedal to be reset to obtain a new braking stroke.

[0071] The present disclosure does not limit the type of the elastic member 16 , which may be a spring, an elastic block, etc.

[0072] In order to connect the second liquid chamber 9 of the brake master cylinder 200 with the brake execution unit 300, in one embodiment provided in the present disclosure, as shown in Figures 1 and 8, the master cylinder docking port 11 also includes a third docking port 113, and the third docking port 113 is used to dock with the third brake fluid port 53 on the brake master cylinder 200, and the third brake fluid port 53 is connected to the second liquid chamber 9 in the brake master cylinder 200. A second connecting port 15 is also provided on the base 1, and the second connecting port 15 is used to connect to the brake execution unit 300. A fourth flow channel 20 is also provided in the base 1, and the third docking port 113 is connected to the second connecting port 15 through the fourth flow channel 20.

[0073] The brake master cylinder 200 has a first liquid chamber 4 and a second liquid chamber 9 respectively, wherein the first liquid chamber 4 is docked with the first docking port 111 on the base 1 through the first brake fluid interface 51 to introduce the brake fluid in the first liquid chamber 4 into the switching valve 3, so that the first liquid chamber 4 can be connected to the pedal simulator 2 and the brake execution unit 300 at the same time. The pedal simulator 2 can provide the driver with pedal pedaling feedback, and the brake execution unit 300 can be directly connected to the first liquid chamber 4 to drive the brake execution unit 300 to operate when the control system fails.

[0074] The second fluid chamber 9 is connected to the brake actuator unit 300 via the third brake fluid port 53. Through the third docking port 113 provided on the base body 1, the fourth flow channel 20 communicating with the third docking port 113, and the second connection port 15, the second fluid chamber 9 is able to achieve fluid communication with the brake actuator unit 300 via the base body 1. This design improves the integration of the pedal simulator module 100, reduces the use of piping, and thus reduces the installation and maintenance costs of the brake system 500.

[0075] In another embodiment of the present disclosure, as shown in Figure 12, an avoidance gap 101 is provided on the base 1, and the avoidance gap 101 is used to expose the third brake fluid interface 53 on the brake master cylinder 200 that is connected to the second fluid chamber 9 in the brake master cylinder 200, so that the third brake fluid interface 53 can be connected to the brake execution unit 300 through a pipeline.

[0076] Optionally, the multiple master cylinder docking ports 11 can be located on the same side of the base 1. This arrangement facilitates direct docking of the multiple master cylinder docking ports 11 with the brake fluid port 5 on the brake master cylinder 200, thereby reducing the installation difficulty of the pedal simulator module 100 and the length of the brake fluid flow path. It is understood that the multiple master cylinder docking ports 11 can include the first docking port 111, the second docking port 112, and the third docking port 113 described above, and the brake fluid port 5 can include the first brake fluid port 51, the second brake fluid port 52, and the third brake fluid port 53 described above.

[0077] In order to improve the degree of fit between the pedal simulator module 100 and the brake master cylinder 200, optionally, as shown in Figures 1 and 3, the base 1 has a first fitting surface 10 for fitting with the brake master cylinder 200, and the master cylinder docking interface 11 is located on the first fitting surface 10, and the first fitting surface 10 is formed into a plane.

[0078] Multiple master cylinder docking interfaces 11 are all located on the first mating surface 10, and the first mating surface 10 is a plane. A plane that cooperates with the first mating surface 10 can be provided on the brake master cylinder 200, so that the pedal simulator 2 and the brake master cylinder 200 can be directly matched through the first mating surface 10. Because the first mating surface 10 is a plane, the gap between the master cylinder docking interface 11 and the brake fluid docking interface can be reduced, thereby improving the tightness of the fit between the pedal simulator module 100 and the brake master cylinder 200 and reducing the probability of leakage.

[0079] To enhance the sealing of the connection, a sealing groove 114 is optionally provided on the base body 1, as shown in Figures 1 and 3. The sealing groove 114 is located outside and surrounds the master cylinder interface 11, and a sealing ring 8 is installed in the sealing groove 114. Since the base body 1 is connected to the brake master cylinder 200 via the master cylinder interface 11, the provision of the surrounding sealing groove 114 outside the master cylinder interface 11 and the installation of the sealing ring 8 in the sealing groove 114 can reduce the gap between the master cylinder interface 11 and the brake fluid interface on the brake master cylinder 200, thereby reducing the risk of fluid leakage during use.

[0080] Optionally, as shown in Figure 3, a mounting portion 25 can be provided on the base 1, and the mounting portion 25 enables the base 1 to be detachably connected to the brake master cylinder 200, so that different pedal simulator modules 100 can be adjusted and replaced according to different needs. The mounting portion 25 can reduce the difficulty of installation and reduce the cost of adjustment.

[0081] It should be noted here that the present disclosure does not limit the specific structure of the mounting portion 25. For example, the mounting portion 25 can be a snap-fit ​​portion, that is, the mounting portion 25 is a snap-fit ​​portion provided on the base 1, and a snap-fit ​​portion that cooperates with the snap-fit ​​portion is formed on the brake master cylinder 200 to connect the pedal simulator module 100 with the brake master cylinder 200.

[0082] In other embodiments, the mounting portion 25 may be a mounting hole 251 formed on the base 1 , and the mounting hole 251 is used for a fastener to pass through, and the fastener can connect the pedal simulator module 100 to the brake master cylinder 200 .

[0083] It should be noted that the present disclosure does not limit the type of fasteners. For example, the fasteners may be bolts or rivets.

[0084] As a second aspect of the present disclosure, as shown in Figures 9 to 12, the present disclosure further provides a brake master cylinder assembly 400, including a brake master cylinder 200 and the above-mentioned pedal simulator module 100, wherein the brake master cylinder 200 has a first fluid chamber 4, and the brake master cylinder 200 is provided with at least one brake fluid interface 5, the brake fluid interface 5 including a first brake fluid interface 51 communicating with the first fluid chamber 4, the base 1 of the pedal simulator module 100 is mounted on the brake master cylinder 200, and the first docking port 111 on the base 1 docks with the first brake fluid interface 51. The brake master cylinder 200 can be connected to the pedal simulator 2 through the first brake fluid interface 51, thereby transmitting the hydraulic pressure changes in the brake master cylinder 200 to the pedal simulator 2, and transmitting the feedback in the pedal simulator 2 to the brake master cylinder 200, so that the driver can get foot feedback.

[0085] Moreover, the pedal simulator module 100 is independently provided. In the process of hardware development according to different foot feel requirements, only the pedal simulator module 100 needs to be adjusted accordingly without redesigning the entire brake master cylinder assembly 400, which reduces development costs and shortens the cycle.

[0086] In addition, since the switching valve 3 is usually manufactured using a riveting and sealing process, which has high requirements on the material of the base 1, the base 1 can be made of a high-performance aluminum alloy, and the brake master cylinder 200 and the pedal simulator module 100 are set separately, so that the brake master cylinder 200 can use cheaper cast aluminum material, which can reduce material costs compared to the integrated brake master cylinder assembly 400.

[0087] Optionally, as shown in Figures 10, 11, and 14, the brake fluid interface 5 may further include a second brake fluid interface 52. The brake master cylinder 200 includes an oil guide groove 6, and the second brake fluid interface 52 communicates with the oil tank 201 via the oil guide groove 6. The pedal simulator 2 further includes a second chamber 23 located on the side of the movable piston 21 facing away from the first chamber 22, and the second brake fluid interface 52 communicates with the second chamber 23. The brake master cylinder 200 includes a first fluid chamber 4 and a second fluid chamber 9, respectively. During operation of the pedal simulator 2, brake fluid flows into or out of the first chamber 22 through the first flow channel 12 and into or out of the second chamber 23 through the third flow channel 18. The movable piston 21 moves under hydraulic pressure, causing the volumes of the first chamber 22 and the second chamber 23 to increase or decrease.

[0088] During this process, the brake fluid can flow into or out of the first fluid chamber 4 through the first brake fluid interface 51 to enter or flow out of the first chamber 22. At the same time, since there is an oil guide groove 6 in the brake master cylinder 200, as the volume of the second chamber 23 increases or decreases, the brake fluid can be discharged into the oil guide groove 6 through the second brake fluid interface 52 connected to the second chamber 23, and enter the oil tank 201 or flow into the second chamber 23 from the oil tank 201 to maintain the hydraulic balance of the chambers on both sides of the moving piston 21.

[0089] Optionally, as shown in Figures 11 to 14, the brake fluid interface 5 may further include a third brake fluid interface 53. The master cylinder 200 includes a second fluid chamber 9 in communication with the third brake fluid interface 53. The third brake fluid interface 53 is configured to connect to the brake actuator unit 300. To ensure normal operation of the brake unit, the second fluid chamber 9 may be connected to the brake actuator unit 300 via the third brake fluid interface 53. This ensures that the master cylinder 200 can generate the hydraulic pressure required to operate the brake actuator unit 300 even if a fault occurs in the first fluid chamber 4 of the master cylinder 200.

[0090] Optionally, as shown in Figure 11, the master cylinder 200 has a second mating surface 7 that mates with the first mating surface 10 on the base 1. The brake fluid interface 5 is located on the second mating surface 7, and the second mating surface 7 is formed as a plane. In embodiments where there are multiple brake fluid interfaces 5, the first brake fluid interface 51, the second brake fluid interface 52, and the third brake fluid interface 53 are all located on the second mating surface 7 and correspond one-to-one with the first docking interface 111, the second docking interface 112, and the third docking interface 113.

[0091] The base 1 of the pedal simulator 2 may have a first fitting surface 10, which may be formed into a plane. Multiple master cylinder docking interfaces 11 are all located on the first fitting surface 10. Since the first fitting surface 10 and the second fitting surface 7 are both planes, the gaps between the multiple master cylinder docking interfaces 11 and the multiple brake fluid interfaces 5 respectively located on the first fitting surface 10 and the second fitting surface 7 are smaller, thereby reducing the risk of leakage.

[0092] Alternatively, as shown in Figure 11 , the first brake fluid interface 51, the second brake fluid interface 52, and the third brake fluid interface 53 may each be provided with a corresponding second mating surface 7, with the second mating surface 7 corresponding to the first brake fluid interface 51, the second mating surface 7 corresponding to the second brake fluid interface 52, and the second mating surface 7 corresponding to the third brake fluid interface 53 being flush with each other. Alternatively, as shown in Figure 12 , the first brake fluid interface 51, the second brake fluid interface 52, and the third brake fluid interface 53 may be located on the same second mating surface 7.

[0093] According to a third aspect provided by the present disclosure, as shown in FIG. 13 and FIG. 14 , the present disclosure provides a braking system 500 , including the above-mentioned brake master cylinder 200 assembly and the brake execution unit 300 .

[0094] According to a fourth aspect provided by the present disclosure, as shown in FIG15 , the present disclosure provides a vehicle 600 , comprising the above-mentioned braking system 500 .

[0095] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple variations can be made to the technical solution of the present disclosure, and these simple variations all fall within the scope of protection of the present disclosure.

[0096] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0097] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A pedal simulator module (100), characterized in that, Comprising: A base body (1) for being mounted on a master brake cylinder (200), at least one master cylinder docking port (11) being provided on the base body (1), the master cylinder docking port (11) including a first docking port (111), the first docking port (111) being used for docking with a first brake fluid interface (51) on the master brake cylinder (200), and the first brake fluid interface (51) being in communication with a first fluid chamber (4) within the master brake cylinder (200); A pedal simulator (2) having a movable piston (21) and a first chamber (22) located on one side of the movable piston (21), the pedal simulator (2) being mounted on the base body (1), and the first docking port (111) being in communication with the first chamber (22).

2. The pedal simulator module (100) according to claim 1, characterized in that, The pedal simulator module (100) further includes a switching valve (3), the switching valve (3) being mounted on the base body (1) and being used for enabling the flow path between the first docking port (111) and the first chamber (22) to be selectively conducted or cut off.

3. The pedal simulator module (100) according to claim 2, characterized in that, A first installation cavity (13) and a first flow channel (12) are further provided within the base body (1), the first flow channel (12) including a first sub-flow channel (121) and a second sub-flow channel (122), the first docking port (111) being in communication with the first sub-flow channel (121), the first chamber (22) being in communication with the second sub-flow channel (122), an inlet of the switching valve (3) being located within the first installation cavity (13) and being in communication with the first sub-flow channel (121), and an outlet of the switching valve (3) being located within the first installation cavity (13) and being in communication with the second sub-flow channel (122).

4. The pedal simulator module (100) according to claim 3, characterized in that, A first connection port (14) is further provided on the base body (1), the first connection port (14) being used for connecting to a brake execution unit (300), and a second flow channel (17) is further provided within the base body (1); One end of the first sub-flow channel (121) away from the first docking port (111) is in communication with the first installation cavity (13), the inlet of the switching valve (3) is in communication with the first installation cavity (13), one end of the second flow channel (17) is in communication with the first installation cavity (13), and the other end of the second flow channel (17) is in communication with the first connection port (14).

5. The pedal simulator module (100) according to any one of claims 1-4, characterized in that, A first connection port (14) is further provided on the base body (1), the first connection port (14) being used for connecting to a brake execution unit (300), a second flow channel (17) is provided within the base body (1), one end of the second flow channel (17) is in communication with the first docking port (111), and the other end of the second flow channel (17) is in communication with the first connection port (14).

6. The pedal simulator module (100) according to any one of claims 1-5, characterized in that, The pedal simulator (2) further has a second chamber (23) located on the side of the movable piston (21) facing away from the first chamber (22). The master cylinder docking port (11) further includes a second docking port (112). A third flow channel (18) is further provided in the base body (1). One end of the third flow channel (18) communicates with the second docking port (112), and the other end of the third flow channel (18) communicates with the second chamber (23). The second docking port (112) is used to dock with a second brake fluid port (52) on the brake master cylinder (200). The second brake fluid port (52) communicates with a fuel tank (201) via an oil guiding groove (6) in the brake master cylinder (200).

7. The pedal simulator module (100) according to claim 6, characterized in that, A second installation cavity (19) is further provided in the base body (1). The pedal simulator (2) includes a cylinder block (24). The movable piston (21) is movably installed in the second installation cavity (19). At least a part of the cylinder block (24) is located in the second installation cavity (19). One side of the movable piston (21) and the cavity wall of the second installation cavity (19) together define the first chamber (22). The other side of the movable piston (21), the cavity wall of the second installation cavity (19), and the cylinder block (24) together define the second chamber (23).

8. The pedal simulator module (100) according to claim 7, characterized in that, The pedal simulator (2) further includes an elastic member (16). The elastic member (16) is located in the second installation cavity (19). One end of the elastic member (16) is connected to the movable piston (21), and the other end of the elastic member (16) is connected to the cylinder block (24).

9. The pedal simulator module (100) according to any one of claims 1-8, characterized in that, The master cylinder docking port (11) further includes a third docking port (113). The third docking port (113) is used to dock with a third brake fluid port (53) on the brake master cylinder (200). The third brake fluid port (53) communicates with a second fluid chamber (9) in the brake master cylinder (200). A second connection port (15) is further provided on the base body (1). The second connection port (15) is used to connect to a brake execution unit (300). A fourth flow channel (20) is further provided in the base body (1). The third docking port (113) communicates with the second connection port (15) through the fourth flow channel (20); or, An avoidance notch (101) is provided on the base body (1). The avoidance notch (101) is used to expose a third brake fluid port (53) on the brake master cylinder (200) that communicates with the second fluid chamber (9) in the brake master cylinder (200), so that the third brake fluid port (53) can be connected to the brake execution unit (300) through a pipeline.

10. The pedal simulator module (100) according to any one of claims 2-4, characterized in that, The switching valve (3) and the pedal simulator (2) are installed on the same side of the base body (1).

11. The pedal simulator module (100) according to any one of claims 1-10, characterized in that, There are multiple master cylinder docking ports (11). The multiple master cylinder docking ports (11) are located on the same side of the base body (1).

12. The pedal simulator module (100) according to any one of claims 1-11, characterized in that, The base body (1) has a first bonding surface (10) for bonding with the brake master cylinder (200), the master cylinder docking port (11) is located on the first bonding surface (10), and the first bonding surface (10) is formed as a plane.

13. The pedal simulator module (100) according to any one of claims 1-12, characterized in that, The base (1) is provided with a sealing groove (114), the sealing groove (114) is located outside the master cylinder docking port (11) and is arranged around the master cylinder docking port (11), and the sealing groove (114) is used for installing a sealing ring (8).

14. The pedal simulator module (100) according to any one of claims 1-13, characterized in that, The base (1) is provided with a mounting portion (25), and the mounting portion (25) enables the base (1) to be detachably connected to the brake master cylinder (200).

15. The pedal simulator module (100) according to claim 14, characterized in that, The mounting portion (25) is a mounting hole (251) formed on the base (1), and the mounting hole (251) is used for a fastener to pass through.

16. A master cylinder assembly (400), characterized in that, It comprises a brake master cylinder (200) and a pedal simulator module (100) as described in any one of claims 1 to 15, wherein the brake master cylinder (200) has a first fluid chamber (4), and the brake master cylinder (200) is provided with at least one brake fluid interface (5), and the brake fluid interface (5) includes a first brake fluid interface (51) connected to the first fluid chamber (4), and a base (1) of the pedal simulator module (100) is installed on the brake master cylinder (200), and a first mating interface (111) on the base (1) is docked with the first brake fluid interface (51).

17. The master cylinder assembly (400) according to claim 16, characterized in that, The brake fluid interface (5) further comprises a second brake fluid interface (52), the brake master cylinder (200) has an oil guide groove (6), the second brake fluid interface (52) is connected to the oil tank (201) via the oil guide groove (6), the pedal simulator (2) further comprises a second chamber (23) located on a side of the movable piston (21) facing away from the first chamber (22), the second brake fluid interface (52) is connected to the second chamber (23); and / or, The brake fluid interface (5) further comprises a third brake fluid interface (53), the brake master cylinder (200) comprises a second fluid chamber (9) in communication with the third brake fluid interface (53), and the third brake fluid interface (53) is used to connect to the brake execution unit (300).

18. The master brake cylinder assembly (400) according to claim 16 or 17, characterized in that, The brake master cylinder (200) has a second bonding surface (7) that is bonded to the base body (1); the brake fluid interface (5) is located on the second bonding surface (7); and the second bonding surface (7) is formed as a plane.

19. A braking system (500), characterized in that, It comprises a brake master cylinder assembly (400) and a brake execution unit (300) as claimed in any one of claims 16 to 18.

20. A vehicle (600), characterized in that, Comprising the braking system (500) of claim 19.

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