CN112937529A - Vehicle braking treading force feedback system - Google Patents
Vehicle braking treading force feedback system Download PDFInfo
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- CN112937529A CN112937529A CN202110156808.9A CN202110156808A CN112937529A CN 112937529 A CN112937529 A CN 112937529A CN 202110156808 A CN202110156808 A CN 202110156808A CN 112937529 A CN112937529 A CN 112937529A
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- stroke
- control valve
- flow control
- feedback system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4004—Repositioning the piston(s) of the brake control means by means of a fluid pressurising means in order to reduce the brake pressure
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- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention relates to a vehicle brake treading force feedback system, belongs to the technical field of vehicle braking, and solves the technical problem that a vehicle brake treading force feedback system in the prior art has potential safety hazards in use. The vehicle braking and treading force feedback system comprises a stroke simulator, a flow control valve, a pressure sensor and a controller; an oil inlet pipeline is communicated with the stroke simulator; the flow control valve is arranged on the oil inlet pipeline, and the minimum value and the maximum value of the opening of the flow control valve are A respectivelyminAnd AmaxWhen the braking operation is not performed, the opening degree of the flow control valve is A0，Amin＜A0＜Amax(ii) a The pressure sensor is arranged on the oil inlet pipeline; the controller is electrically connected with the flow control valve and the pressure sensor so as to positively and correspondingly adjust the opening of the flow control valve according to the pressure of the working oil. The vehicle braking and treading force feedback system has the advantages of safer use and higher universality.
Description
Technical Field
The invention belongs to the technical field of vehicle braking, and particularly relates to a vehicle braking and treading force feedback system.
Background
At present, in the vehicle braking EHB field, the running-board is the braking executive component, and the driver can realize vehicle braking through the pedal is stepped on to the foot, with the help of vehicle braking pedal force feedback system, can give the driver with the effort feedback when the driver steps on the running-board, and then help the driver to drive the vehicle better. At present, an important component of a vehicle braking and pedaling force feedback system is a stroke simulator, and stroke simulators in the related art comprise a mechanical type and a hydraulic type, but the mechanical type stroke simulator and the hydraulic type stroke simulator both cause potential safety hazards to the existing vehicle braking and pedaling force feedback system when in use.
Disclosure of Invention
The invention provides a vehicle brake treading force feedback system, which is used for solving the technical problem that potential safety hazards exist in the prior vehicle brake treading force feedback system in the use process.
The invention is realized by the following technical scheme: a vehicle braking and treading force feedback system comprises a stroke simulator, a flow control valve, a pressure sensor and a controller;
an oil inlet pipeline for guiding working oil from the brake main cylinder into the stroke simulator is communicated with the stroke simulator;
the flow control valve is arranged on the oil inlet pipeline, and the opening degree of the flow control valve is A when the brake operation is not executed0，Amin＜A0＜AmaxWherein A isminIs the minimum opening degree of the flow control valve, AmaxThe maximum opening degree of the flow control valve;
the pressure sensor is arranged on the oil inlet pipeline and used for detecting the pressure of working oil in the oil inlet pipeline;
the controller is electrically connected with the flow control valve and the pressure sensor to adjust the opening degree of the flow control valve according to the pressure of the working oil.
Further, in order to better implement the present invention, the stroke simulator includes a stroke cylinder and a stroke piston, the stroke piston is disposed in the stroke cylinder, an internal space of the stroke cylinder is divided into a first sealing space and a second sealing space by the stroke piston, the oil inlet pipeline is communicated with the first sealing space, and the stroke piston is connected with the stroke cylinder through an elastic member;
and the stroke piston is provided with a stroke control structure for controlling the movement amount of the stroke piston in the stroke cylinder body when overcoming the elasticity of the elastic piece.
Further, in order to better implement the present invention, the elastic member is disposed in the second sealed space.
Further, in order to better implement the present invention, the stroke control structure is a baffle plate, and the baffle plate is located in the second sealed space.
Further, in order to better implement the present invention, the elastic member is a spring, and both ends of the spring are respectively connected to the stroke piston and the inner wall of the second sealed space.
Further, in order to better realize the invention, an oil discharge pipeline communicated with the second sealed space is connected to the stroke cylinder body, and an oil outlet end of the oil discharge pipeline is connected with an oil can.
Furthermore, in order to better implement the present invention, four sealed cavities are arranged in the brake master cylinder, two of the four sealed cavities are a first cavity group connected with a brake wheel cylinder, the other two of the four sealed cavities are a second cavity group connected with the stroke simulator, two sealed cavities in the second cavity group are respectively a first sealed cavity and a second sealed cavity, the first sealed cavity is communicated with the first sealed space through the oil inlet pipeline, and the second sealed cavity is communicated with the oil can.
Further, in order to better implement the invention, an oil pipe communicated with the second sealing space is connected to the stroke cylinder, and an oil inlet end of the oil pipe is communicated with the second sealing cavity.
Further, in order to better implement the present invention, the flow control valve is a throttle valve.
Further, in order to better implement the present invention, the controller is a wire controller or a remote controller.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a vehicle brake treading force feedback system, which comprises a stroke simulator, a flow control valve, a pressure sensor and a controller, wherein the stroke simulator is communicated with a brake main cylinder through an oil inlet pipeline, a pedal is connected on a piston rod of the brake main cylinder, the structure of the part is the same as that of the prior art, when the pedal is treaded, working oil in the brake main cylinder enters the stroke simulator through the oil inlet pipeline, the flow control valve and the pressure sensor are both arranged on the oil inlet pipeline, the controller is electrically connected with the pressure sensor and the flow control valve, the pressure sensor can detect the oil pressure of the working oil, the flow control valve controls the flow of the working oil in the oil inlet pipeline through the change of the opening degree, the controller adjusts the opening degree of the flow control valve according to the pressure of the working oil, in particular, the opening degree of the flow control valve is controlled to be increased when, and controls the opening degree of the flow control valve to be decreased when the pressure of the working oil detected by the pressure sensor is decreased, and also presets the opening degree A of the flow control valve when the braking operation is not performed in the controller0，Amin＜A0＜AmaxWherein A isminMinimum opening degree of the flow control valve, AmaxThe maximum opening degree of the flow control valve is ensured, namely, the opening degree of the flow control valve is ensured to be between full opening and full closing when the pedal is not actuated.
With the above structure, when the pedal is not depressed, the flow control valve indirectly applies a force F to the pedal0Since the pedal is not at this timeBecause the stroke simulator does not apply a force to the pedal, the total resistance of the pedal from the stroke simulator and the flow control valve is F0When the pedal is pressed down, the pressure of the working oil in the oil inlet pipeline is increased by the pedal, the increased pressure is detected by the pressure sensor and transmits a signal to the controller, and the controller can control the opening degree of the flow control valve to be larger, so that the indirect acting force of the flow control valve on the pedal is reduced to F1However, when the pedal is depressed, the working oil enters the stroke simulator, and the stroke simulator applies a force W to the pedal1Therefore, the total of the resistances of the pedal from the stroke simulator and the flow control valve at this time is F1+W1By setting the damping of the stroke simulator, F can be achieved1+W1＝F0Therefore, the acting force (namely, the feedback force) applied to the pedal can be ensured to be F all the time0Furthermore, no matter how deep the pedal is stepped on, the feedback force on the pedal is always F0That is, the tightness of the pedal in one-step stroke is only related to the initial opening of the flow control valve preset in the controller, and is not affected by the stepping depth of the pedal, and the larger the opening of the flow control valve set in the controller, the smaller the stepping force required during stepping, so that a driver with small stepping force can set the opening of the flow control valve slightly larger in the controller, so as to ensure that the pedal is looser, the smaller the force required for stepping, and the constant stepping force is required during the process from just stepping to the bottom, so that even a driver with small stepping force can easily step to the bottom, so as to brake the vehicle more easily, and in addition, different opening values of the flow control valve can be set in the controller for different models and different drivers, so as to meet the requirement for the tightness of the pedal, such as a large truck or a driver who wants a slightly larger feedback force (i.e. a slightly tighter pedal), the a of the flow control valve may be adjusted0Set smaller and a car or driver desiring a slightly lower feedback force can then set the a of the flow control valve to0Is arranged relativelyThe vehicle brake treading force feedback system has the advantages that the safety coefficient of use of the vehicle brake treading force feedback system is higher, and the universality is stronger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a brake pedal force feedback system of a vehicle according to the present invention;
FIG. 2 is a controller control schematic in the present invention;
fig. 3 is a schematic structural diagram of a stroke simulator in the present invention.
In the figure:
1-a stroke simulator; 11-stroke cylinder; 12-stroke piston; 13-a first sealed space; 14-a second sealed space; 15-an elastic member; 16-a stroke control structure;
2-a flow control valve;
3-a pressure sensor;
4-a controller;
5-a master braking cylinder; 51-a first set of cavities; 52-a second group of lumens; 521-a first sealed chamber; 522-a second sealed chamber;
6-oil inlet pipeline;
7-a pedal;
8-an oil drainage pipeline;
9-oil pot;
10-oil pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the embodiment provides a vehicle brake treading force feedback system, which is used for solving the technical problem that the vehicle brake treading force feedback system in the prior art is not high in universality. Specifically, the elastic member of the stroke simulator in the prior art is directly or indirectly connected to the pedal, so that the greater the elastic force exerted by the elastic member on the pedal when the pedal is stepped deeper, the greater the feedback force reflected to the driver by the pedal, that is, the magnitude of the feedback force exerted by the pedal to the driver varies positively with the change of the stepping depth of the pedal, which results in that the pedal is stepped deeper, the tighter the pedal is, and all the vehicle brake pedal feel feedback systems in the prior art have the characteristic of being stepped deeper and tighter. When a driver with low pedaling force (such as a female driver) pedals the pedal brake, the pedal is tighter and requires larger force to step as the pedal is deeper, so that the driver with low pedaling force is likely to cause the pedal to be unable to step to the bottom due to insufficient pedaling force, and further cause the vehicle to be unable to brake in emergency, thereby generating potential safety hazard.
The vehicle braking and pedaling force feedback system provided by the embodiment comprises a stroke simulator 1, a flow control valve 2, a pressure sensor 3 and a controller 4.
The stroke simulator 1 is a hydraulic stroke simulator and is driven by hydraulic pressure, and the stroke simulator 1 is communicated with the brake master cylinder 5 through the oil inlet pipeline 6, so that working oil (brake fluid) in the brake master cylinder 5 can enter the stroke simulator 1 through the oil inlet pipeline 6 to drive the stroke simulator 1 to work, and at the moment, the structure which is the same as that of a vehicle brake treading force feedback system in the prior art is formed. The pedal 7 is connected to a piston rod of the master cylinder 5, specifically, the pedal 7 is connected to a piston rod of the master cylinder 5, when the pedal 7 is pressed, the piston rod of the master cylinder 5 is pushed, so as to drive the master cylinder 5 to operate, and a part of the working oil of the master cylinder 5 can enter the stroke simulator 1 through the oil inlet pipeline 6 to drive the stroke simulator 1 to operate. The structure of this part is the same as that of the prior art, and therefore, detailed description thereof is omitted, but it should be noted that, according to the common general knowledge in the art, the hydraulic pressure of the working oil in the oil inlet pipe 6 is larger as the pedal 7 is stepped deeper.
Different from the prior art, the flow control valve 2 and the pressure sensor 3 are arranged on the oil inlet pipeline 6, the pressure sensor 3 can detect the pressure of the working oil in the oil inlet pipeline 6, the flow control valve 2 can control the flow of the working oil in the oil inlet pipeline 6, and it should be noted that the degree of opening of the flow control valve 2 will directly affect the treading tightness of the pedal 7, for example, when the opening degree of the flow control valve 2 is large, the working oil can smoothly enter the stroke simulator 1 through the flow control valve 2, when the opening degree of the flow control valve 2 is small, the working oil hardly enters the stroke simulator 1 through the flow control valve 2, and the larger the stepping force required for stepping on the pedal 7 is, the tighter the pedal 7 is at this time, therefore, the difference in the opening degree of the flow rate control valve 2 corresponds to an indirect application of a force to the pedal 7. As an embodiment of the present embodiment, the pressure sensor 3 of the present embodiment is installed between the flow rate control valve 2 and the master cylinder 5, so that the pressure sensor 3 can more accurately detect the pressure of the hydraulic fluid discharged from the master cylinder 5. As another embodiment of this embodiment, the pressure sensor 3 in this embodiment may be located between the flow rate control valve 2 and the stroke simulator 1.
As an embodiment of the present embodiment, the flow control valve 2 in the present embodiment is a throttle valve. The controller 4 in this embodiment is a wire controller or a remote controller, the controller 4 has a control panel, the control panel can input a preset opening degree of the flow control valve 2, the controller 4 is electrically connected to both the flow control valve 2 and the pressure sensor 3, and the controller 4 positively and correspondingly adjusts the opening degree of the flow control valve according to the pressure of the working oil detected by the pressure sensor, and it should be noted that "positively and correspondingly adjust" described herein is specifically as follows: when the pressure of the working oil detected by the pressure sensor 3 increases, the opening degree of the flow control valve 2 is controlled to increase;when the hydraulic pressure of the hydraulic oil detected by the pressure sensor 3 decreases, the opening degree of the control flow rate control valve 2 decreases. In this embodiment, the controller 4 is required to preset the opening degree of the flow control valve 2 as a when the braking operation is not performed in advance0The opening end points of the flow control valve 2 are defined as AminAnd AmaxI.e. the maximum opening of the flow control valve 2 is amaxThe minimum opening degree of the flow control valve 2 is AminAnd A ismin＜A0＜AmaxI.e. to ensure that the opening of the flow control valve 2 is between fully open and fully closed when the pedal 7 is not actuated.
With the above structure, when the pedal 7 is not depressed, the flow control valve 2 indirectly applies a force F to the pedal 70At this time, since the pedal 7 is not moved, the stroke simulator 1 does not apply an urging force to the pedal 7, and therefore the total of the resistances received by the pedal 7 from the stroke simulator 1 and the flow rate control valve 2 is F0When the pedal 7 is pressed down, the pedal 7 increases the pressure of the working oil in the oil inlet pipeline 6, the increased pressure is detected by the pressure sensor 3 and transmits a signal to the controller 4, the controller 4 controls the flow control valve 2 to be opened to a greater extent, and therefore the indirect acting force of the flow control valve 2 on the pedal 7 is reduced to F1However, when the pedal 7 is depressed, the working oil enters the stroke simulator 1, and the stroke simulator 1 applies a force W to the pedal 71Therefore, the total of the resistances of the pedal 7 from the stroke simulator 1 and the flow rate control valve 2 at this time is F1+W1By setting the damping of the stroke simulator 1, F can be made1+W1＝F0Thus, it is ensured that the force (i.e. the feedback force) applied to the pedal 7 is always F0Furthermore, the feedback force received by the pedal 7 is always F no matter how deep the pedal 7 is stepped on0That is, the degree of tightness of the pedal 7 in one stepping stroke is only related to the initial opening degree of the flow control valve 2 preset in the controller 4, and is not affected by the stepping depth of the pedal 7, and the stepping force required for stepping is smaller as the opening degree of the flow control valve 2 provided in the controller 4 is larger, which is why the stepping force is smallerIn addition, different opening values of the flow control valve 2 can be set in the controller 4 to meet the requirement of tightness of the pedal 7 for different models and different drivers, so that the flow control valve 2 can be set to be smaller for large trucks or drivers who want a large feedback force (namely, the pedal 7 is slightly tight), and the flow control valve 2 can be set to be larger for cars or drivers who want a small feedback force, the vehicle type and the client with different requirements can be realized, so that the vehicle brake treading force feedback system provided by the invention has higher use safety factor and stronger universality. It should be noted that, when the pedal 7 is released, the pressure of the working oil in the oil inlet line 6 is reduced, and at this time, the controller 4 controls the opening degree of the flow control valve 2 to be reduced to a preset opening degree.
As an alternative embodiment of this embodiment, the stroke simulator 1 of the feedback system of the braking and pedaling forces of the vehicle provided by this embodiment comprises a stroke cylinder 11 and a stroke piston 12, the stroke piston 12 is disposed in the stroke cylinder 11 and the stroke piston 12 can perform a piston motion in the stroke cylinder 11, an internal space of the stroke switch is divided into a first sealed space 13 and a second sealed space 14 by the stroke piston 12, an oil outlet end of the oil inlet pipeline 6 is connected to the stroke cylinder 11 and is communicated with the first sealed space 13, the working fluid entering the oil inlet pipeline 6 can drive the stroke piston 12 to move towards the second sealed space 14 side, the stroke piston 12 is connected with the stroke cylinder 11 by an elastic member 15, when the working fluid drives the stroke piston 12 to move towards the second sealed space 14, the stroke piston 12 overcomes the elastic force of the elastic member 15, so that the elastic member 15 accumulates the elastic force, in this way, the spring element 15 exerts a damping force on the travel piston 12, which is indirectly transmitted to the pedal 7 via the working fluid. In addition, a stroke control structure 16 is arranged on the stroke piston 12, the stroke control structure 16 is used for controlling the movement amount of the stroke piston 12 in the stroke cylinder 11 when the elastic force of the elastic element 15 is overcome, namely when the pedal 7 is stepped on, working oil enters the first sealed space 13 through the oil inlet pipeline 6 to drive the stroke piston 12 to move towards the second sealed space 14, and when the movement process reaches a certain degree, the stroke control structure 16 is connected with the inner wall of the stroke cylinder 11 so as to abut against the inner wall, so that the stroke piston 12 cannot move continuously, namely the elastic element 15 cannot be compressed continuously, so that the elastic element 15 can be protected, and the service life of the stroke simulator 1 is prolonged.
As an alternative to this embodiment, the elastic element 15 in this embodiment is disposed in the second sealed space 14, and when the oil is fed into the first sealed space 13, the elastic element 15 is driven to compress, i.e. overcome the elastic force of the elastic element 15. As another embodiment of this embodiment, the elastic member 15 in this embodiment may also be disposed in the second sealed space 14, and when the first sealed space 13 is filled with oil, the stroke piston 12 stretches the elastic member 15, that is, overcomes the elastic force of the elastic member 15. Of course, the best mode of the present embodiment is to arrange the elastic member 15 in the second sealed space 14, so as to reduce the influence of the elastic member 15 on the working oil.
As an embodiment of the present embodiment, the stroke control structure 16 in the present embodiment is a baffle welded or integrally formed on the stroke piston 12, and the baffle is also located in the second sealed space 14. When the stroke piston 12 is driven by the working oil to move to a certain extent from the first sealed space 13 to the second sealed space 14, the baffle will prop against the inner wall of the stroke cylinder 11, and at this time, the stroke piston 12 cannot continue to compress the elastic element 15.
As an embodiment of the present embodiment, the elastic member 15 in the present embodiment is a spring, and both ends of the spring are respectively connected to the stroke piston 12 and the inner wall of the second sealed space 14, thereby simplifying the structure. Of course, the elastic member 15 in the present embodiment may be a rubber block filled in the second sealed space 14 and abutting against the stroke piston 12 and the inner wall of the second sealed space 14.
In this embodiment, the second sealed space 14 is filled with hydraulic oil, the stroke cylinder 11 is connected to an oil discharge pipe 8 communicating with the second sealed space 14, and an oil outlet end of the oil discharge pipe 8 is connected to the oil can 9, so as to ensure that the hydraulic oil pressure in the second sealed space 14 is zero, so that the working oil enters the first sealed space 13 to push the stroke piston 12 to move. When the pedal 7 is released, the elastic element 15 resets the driving piston 12, so that the working oil in the first sealed space 13 is pushed out of the first sealed space 13 and flows back, and the second sealed space 14 is continuously filled with the working oil.
As an optional implementation manner of the present embodiment, four sealed cavities are provided in the master cylinder 5 in the present embodiment, two of the four sealed cavities are the first cavity group 51 connected to the wheel cylinder, and when the pedal 7 is pressed down, the brake fluid in the first cavity group 51 will enter the wheel cylinder to perform braking. The other two of the four sealed cavities are the second cavity group 52 connected with the stroke simulator 1, specifically, the two sealed cavities of the second cavity group 52 are divided into a first sealed cavity 521 and a second sealed cavity 522, the first sealed cavity 521 is communicated with the first sealed space 13 through the oil inlet pipeline 6, and the second sealed cavity 522 is communicated with the oil can 9, so as to ensure that the pedal 7 can smoothly act. As an embodiment of the present embodiment, the stroke cylinder 11 of the stroke simulator 1 in the present embodiment is connected with the oil pipe 10 communicating with the second sealed space 14, the oil inlet end of the oil pipe 10 communicates with the second sealed chamber 522, and the second sealed chamber 522 communicates with the oil can 9 through the oil exhaust pipeline 8, so that the second sealed chamber 522 communicates with the oil can 9 at this time, which can simplify the system pipeline.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A vehicle braking and treading force feedback system is characterized by comprising a stroke simulator, a flow control valve, a pressure sensor and a controller;
an oil inlet pipeline for guiding working oil from the brake main cylinder into the stroke simulator is communicated with the stroke simulator;
the flow control valve is arranged on the oil inlet pipeline, and the opening degree of the flow control valve is A when the brake operation is not executed0，Amin＜A0＜AmaxWherein A isminIs the minimum opening degree of the flow control valve, AmaxThe maximum opening degree of the flow control valve;
the pressure sensor is arranged on the oil inlet pipeline;
the controller is electrically connected with the flow control valve and the pressure sensor so as to positively and correspondingly adjust the opening of the flow control valve according to the hydraulic pressure of the working oil.
2. A vehicle braking and pedaling force feedback system according to claim 1, wherein: the stroke simulator comprises a stroke cylinder body and a stroke piston, the stroke piston is arranged in the stroke cylinder body, the inner space of the stroke cylinder body is divided into a first sealing space and a second sealing space through the stroke piston, the oil inlet pipeline is communicated with the first sealing space, and the stroke piston is connected with the stroke cylinder body through an elastic piece;
and the stroke piston is provided with a stroke control structure for limiting the moving amount of the stroke piston in the stroke cylinder body.
3. A vehicle braking and pedaling force feedback system according to claim 2, wherein: the elastic member is disposed in the second sealed space.
4. A vehicle braking and pedaling force feedback system according to claim 3, wherein: the stroke control structure is a baffle plate, and the baffle plate is positioned in the second sealed space.
5. A vehicle braking and pedaling force feedback system according to claim 4, wherein: the elastic part is a spring, and two ends of the spring are respectively connected to the stroke piston and the inner wall of the second sealed space.
6. A vehicle braking and pedaling force feedback system according to claim 5, wherein: and an oil discharge pipeline communicated with the second sealed space is connected to the stroke cylinder body, and the oil outlet end of the oil discharge pipeline is connected with the oil can.
7. A vehicle braking and pedaling force feedback system according to claim 6, wherein: the brake master cylinder is internally provided with four sealed cavities, two of the four sealed cavities are a first cavity group connected with a brake wheel cylinder, the other two of the four sealed cavities are a second cavity group connected with the stroke simulator, the two sealed cavities in the second cavity group are respectively a first sealed cavity and a second sealed cavity, the first sealed cavity is communicated with the first sealed space through the oil inlet pipeline, and the second sealed cavity is communicated with the oil can.
8. A vehicle braking and pedaling force feedback system according to claim 7, wherein: and the stroke cylinder body is connected with an oil pipe communicated with the second sealing space, and the oil inlet end of the oil pipe is communicated with the second sealing cavity.
9. A vehicle braking and pedaling force feedback system according to any one of claims 1 to 8, wherein: the flow control valve is a throttle valve.
10. A vehicle braking and pedaling force feedback system according to any one of claims 1 to 8, wherein: the controller is a wire controller or a remote controller.
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| CN202110156808.9A CN112937529B (en) | 2021-02-04 | 2021-02-04 | Vehicle braking treading force feedback system |
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| CN202110156808.9A CN112937529B (en) | 2021-02-04 | 2021-02-04 | Vehicle braking treading force feedback system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013411A (en) * | 2021-11-10 | 2022-02-08 | 万向钱潮股份有限公司 | Pedal simulator of large vehicle control power-assisted system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849883A (en) * | 2019-03-11 | 2019-06-07 | 郑州科技学院 | Brake fluid system and intelligent mobile vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849883A (en) * | 2019-03-11 | 2019-06-07 | 郑州科技学院 | Brake fluid system and intelligent mobile vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013411A (en) * | 2021-11-10 | 2022-02-08 | 万向钱潮股份有限公司 | Pedal simulator of large vehicle control power-assisted system |
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Address after: 430073 No. 299, Guanggu Avenue, Donghu Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Yuanfeng automobile electronic control system Co.,Ltd. Address before: No. 299, Guanggu Avenue, Donghu Development Zone, Wuhan City, Hubei Province, 430014 Patentee before: WUHAN YOUFIN ELECTRONIC CONTROL SYSTEM CO.,LTD. |