CN215204840U

CN215204840U - Hydraulic brake device

Info

Publication number: CN215204840U
Application number: CN202023204929.6U
Authority: CN
Inventors: 陈海波; 雷晶
Original assignee: Shenlan Artificial Intelligence Shenzhen Co Ltd
Current assignee: Shenlan Artificial Intelligence Shenzhen Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-12-17
Anticipated expiration: 2030-12-25

Abstract

The embodiment of the application relates to the technical field of hydraulic pressure, and provides a hydraulic braking device, which comprises: the first brake master cylinder is in power coupling connection with the brake pedal, and the first brake master cylinder is communicated with the brake actuator through a first pipeline; the first switch is arranged on the first pipeline; the second brake master cylinder is communicated with the brake actuator through a second pipeline; the driving module is in power coupling connection with the second brake master cylinder; the second switch is arranged on the second pipeline; the controller is arranged to turn on the first switch and turn off the second switch based on a trigger signal of a brake pedal in a manual braking mode; and in the automatic braking mode, the second switch is turned on, the first switch is turned off, and the driving module is controlled to output power. The application provides a hydraulic braking device can enlarge and be suitable for the scene, improves the convenience of braking operation.

Description

Hydraulic brake device

Technical Field

The application relates to the technical field of hydraulic pressure, in particular to a hydraulic braking device.

Background

With the development of vehicle technology, a vehicle brake device is a device that applies resistance to a power portion of a vehicle to perform forced braking, and an automobile brake device can forcibly decelerate or stop the vehicle while the vehicle is traveling.

The conventional vehicle braking device is mainly used for performing power coupling connection on a brake pedal and a power part of a vehicle, when a driver treads the brake pedal, resistance can be transmitted to the power part of the vehicle in a mechanical, hydraulic or pneumatic mode and the like, so that the vehicle can be braked.

Disclosure of Invention

The application provides a hydraulic braking device to realize enlarging the applicable scene, improve the convenience of braking operation.

The application provides a hydraulic brake device, hydraulic brake device includes: the first brake master cylinder is in power coupling connection with a brake pedal, and the first brake master cylinder is communicated with the brake actuator through a first pipeline; a first switch mounted to the first pipeline; the second brake master cylinder is communicated with the brake actuator through a second pipeline; the driving module is in power coupling connection with the second brake master cylinder; a second switch mounted to the second pipeline; the first switch, the second switch and the driving module are electrically connected with the controller, and the controller is set to turn on the first switch and turn off the second switch based on a trigger signal of the brake pedal in a manual braking mode; and in the automatic braking mode, the second switch is turned on, the first switch is turned off, and the driving module is controlled to output power.

According to the hydraulic brake device provided by the application, the controller is set to be in an automatic braking mode, the second switch is turned on, the first switch is turned off, and a driving signal is output to the input end of the driving module through the output end so as to control the driving module to output power.

According to the hydraulic brake device provided by the application, the controller is configured to switch between the manual braking mode and the automatic braking mode based on a mode selection signal input by a user.

According to the present application, there is provided a hydraulic brake device, further comprising: a first sensor mounted on the first conduit at a location between the first master cylinder and the first switch, the first sensor electrically connected to the controller, the controller configured to: in an automatic braking mode, if the first sensor detects an oil pressure rising signal, the driving module is controlled to output power based on the oil pressure rising signal, so that the brake actuator performs automatic braking; or the first switch is opened and the second switch is closed, so that the brake actuator performs manual braking.

According to the present application, there is provided a hydraulic brake device, further comprising: and the second sensor is arranged on the second pipeline and is electrically connected with the controller.

According to the present application, there is provided a hydraulic brake device, wherein the first master cylinder has a first port communicating with a first end of the brake actuator and a second port communicating with a second end of the brake actuator, and the first switch is installed between the first port and the first end and between the second port and the second end.

According to the hydraulic brake device provided by the application, the second brake master cylinder is provided with a third port and a fourth port, the third port is communicated with the first end of the brake actuator, the fourth port is communicated with the second end of the brake actuator, and the second switch is installed between the third port and the first end and between the fourth port and the second end.

According to the hydraulic brake device provided by the application, the first switch is a normally open valve.

According to a hydraulic brake device provided by the application, the second switch is a normally closed valve.

According to the present application, there is provided a hydraulic brake device, further comprising: the first brake master cylinder is communicated with the first brake fluid tank; and the second brake master cylinder is communicated with the second brake fluid tank.

According to the hydraulic brake device provided by the application, at least one of the first switch and the second switch is a solenoid valve.

According to the present application, there is provided a hydraulic brake apparatus, the driving module including: the gear motor is electrically connected with the controller.

The application provides a hydraulic braking device, through setting up second brake master cylinder and the second switch that links to each other with the controller, can realize the switching of artifical braking mode and automatic braking mode through the controller, can enlarge and be suitable for the scene, improve the convenience of brake operation.

Drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a hydraulic brake device provided in the present application.

Reference numerals:

10: a first brake master cylinder; 11: a first port; 12: a second port;

13: a first brake fluid reservoir; 14: a brake pedal; 15: a first pipeline;

16: a first switch; 17: a first sensor; 20: a second master brake cylinder;

21: a third port; 22: a fourth port; 23: a second brake fluid reservoir;

24: a drive module; 25: a second pipeline; 26: a second switch;

27: a second sensor; 30: a controller; 40: a brake actuator;

41: a first end; 42: a second end.

Detailed Description

To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The hydraulic brake device of the present application is described below with reference to fig. 1.

As shown in fig. 1, an embodiment of the present application provides a hydraulic brake device including: a first master cylinder 10, a first switch 16, a second master cylinder 20, a drive module 24, a second switch 26, and a controller 30.

The first master cylinder 10 is in power coupling connection with the brake pedal 14, and the first master cylinder 10 and the brake actuator 40 are communicated through a first pipeline 15.

It will be appreciated that the brake actuator 40 may be part of an ESP (electronic stability system) module of the vehicle, the ESP module brake actuator 40 being the braking system of the vehicle wheels, the brake actuator 40 being a braking system capable of individually braking the vehicle wheels, the braking system of a vehicle equipped with the ESP module having a pressure accumulation function, unlike a vehicle without the ESP module. In short, the pressure accumulation can pressurize the brake oil pipes of the wheels when the vehicle has no brake signal according to requirements, and accurate brake force is independently applied to each wheel, so that the vehicle can keep stable running.

The first master cylinder 10 and the brake actuator 40 are communicated through the first pipe 15, and the first master cylinder 10 can pump hydraulic oil to the first pipe 15.

The primary function of the first master cylinder 10 is to convert the mechanical force generated by the brake pedal 14 into hydraulic force, and the first master cylinder 10 may include: push rod, piston leather cup, return spring, compensation oilhole and bypass oilhole.

The push rod can be dragged by the brake pedal 14, the piston is used for generating brake pressure, the piston cup plays a role in sealing the brake pressure, the return spring is used for enabling the brake pedal 14 to return to the original position after the brake is finished, and the compensation oil hole and the bypass oil hole are used for increasing the flowing speed of liquid.

The brake pedal 14 and the first master cylinder 10 are coupled in a power mode, that is, the brake pedal 14 can transmit mechanical force to the first master cylinder 10 to drive the push rod of the first master cylinder 10, and when the driver steps on the brake pedal 14, the first master cylinder 10 can convert the mechanical force of the brake pedal 14 into hydraulic force, that is, pump hydraulic oil to the first pipeline 15, so that the brake actuator 40 receives greater hydraulic force, thereby controlling the wheel brake.

In other words, when the driver steps on the brake pedal 14, the first master cylinder 10, the first pipe line 15, and the brake actuator 40 can be interlocked to brake the vehicle.

And a first switch 16 installed on the first pipe 15, wherein the first switch 16 can control the on/off of the first pipe 15, when the first switch 16 is closed, the first pipe 15 is blocked, the first master cylinder 10 cannot transmit hydraulic pressure to the brake actuator 40, when the first switch 16 is closed, the first pipe 15 is conducted, and the first master cylinder 10 can transmit hydraulic pressure to the brake actuator 40.

The drive module 24 is in power-coupled connection with the second master brake cylinder 20.

It will be appreciated that the second master cylinder 20 has the same structure as the first master cylinder 10, the second master cylinder 20 mainly functions to convert the mechanical force generated by the driving module 24 into hydraulic force, and the second master cylinder 20 may include: push rod, piston leather cup, return spring, compensation oilhole and bypass oilhole. The push rod can receive the traction of drive module 24, and the piston is used for producing brake pressure, and the piston leather cup plays brake pressure sealing effect, and return spring is used for making drive module 24 reply to original position after the braking, and compensation oilhole and bypass oilhole are used for increasing the speed that liquid flows.

The second master cylinder 20 and the brake actuator 40 communicate through the second conduit 25, and the second master cylinder 20 is capable of pumping hydraulic oil to the second conduit 25.

The second line 25 and the first line 15 may be commonly connected to an oil inlet of the brake actuator 40, that is, the hydraulic oil in the first line 15 and the second line 25 is collected together at the oil inlet of the brake actuator 40, forming an integral passage.

The second switch 26 is attached to the second pipe 25, the second switch 26 can control the opening and closing of the second pipe 25, when the second switch 26 is closed, the second pipe 25 is blocked, the second master cylinder 20 cannot transmit the hydraulic pressure to the brake actuator 40, when the second switch 26 is closed, the second pipe 25 is conducted, and the second master cylinder 20 can transmit the hydraulic pressure to the brake actuator 40.

That is, the first conduit 15 is controlled by the first switch 16, the second conduit 25 is controlled by the second switch 26, the source of the hydraulic pressure applied to the brake actuator 40 can be determined by the switch states of the first switch 16 and the second switch 26, when the first switch 16 is turned on and the second switch 26 is turned off, the hydraulic pressure applied to the brake actuator 40 is from the first master cylinder 10, and when the second switch 26 is turned on and the first switch 16 is turned off, the hydraulic pressure applied to the brake actuator 40 is from the second master cylinder 20.

The controller 30, the first switch 16, the second switch 26, and the driving module 24 are electrically connected to an output of the controller 30. An output of the controller 30 may output control signals to the first switch 16, the second switch 26, and the drive module 24.

The controller 30 is configured to open the first switch 16 and close the second switch 26 to enable the brake actuator 40 to perform manual braking in the manual braking mode based on the trigger signal of the brake pedal 14; in the automatic braking mode, the second switch 26 is turned on and the first switch 16 is turned off, and the driving module 24 is controlled to output power to automatically brake the brake actuator 40.

In some embodiments, the controller is configured to switch between the manual braking mode and the automatic braking mode based on a mode selection signal input by a user.

That is, before driving the vehicle, a user may input a mode selection signal, such as a manual braking mode or an automatic braking mode, to the controller through a control panel electrically connected to the controller, and the controller may determine that the vehicle is in one of the manual braking mode and the automatic braking mode according to the mode selection signal input by the user to determine a braking response mechanism during driving.

It will be appreciated that the hydraulic brake device may have a manual braking mode in which the first switch 16 remains open and the second switch 26 remains closed, with the first line 15 open, the second line 25 blocked, and the brake actuator 40 being affected by the hydraulic pressure of the first master cylinder 10; in the automatic braking mode, the first switch 16 remains closed and the second switch 26 remains open, with the first line 15 blocked, the second line 25 open, and the brake actuator 40 affected by the hydraulic pressure of the second master cylinder 20.

In the manual braking mode, when the driver steps on the brake pedal 14, the brake pedal 14 generates a trigger signal to transmit mechanical force to the first master cylinder 10, so that the first master cylinder 10 transmits hydraulic pressure to the brake actuator 40 through the first pipeline 15, and the brake actuator 40 controls the deceleration braking of the vehicle.

In the automatic braking mode, when controller 30 outputs a braking signal to drive module 24, drive module 24 transmits a mechanical force to second master cylinder 20 such that second master cylinder 20 transmits a hydraulic force to brake actuator 40 through second conduit 25, at which time brake actuator 40 controls the vehicle retarding brake.

In some embodiments, the controller is configured to turn on the second switch and turn off the first switch, and output a driving signal to the input terminal of the driving module through the output terminal to control the driving module to output power in the automatic braking mode.

It can be understood that, in the automatic braking mode, when the vehicle encounters an obstacle and there is a risk of collision, the controller may output a driving signal to the input end of the driving module through the output end, so as to control the driving module to output power to the second brake master cylinder, so that the second brake master cylinder can transmit hydraulic pressure to the second pipeline, and the brake actuator performs braking.

That is to say, the hydraulic braking device of this application embodiment can realize manual braking and automatic braking, can be applied to the vehicle of automatic driving scene for the vehicle can carry out automatic braking according to the barrier condition in front, so that unmanned driving or driver assistance, can widen vehicle braking device's use scene.

Of course, the embodiment of the application is equivalent to that the controller 30, the driving module 24, the second brake master cylinder 20 and the second pipeline 25 are added in the existing vehicle brake device, and the existing vehicle brake device can be directly modified without special customization during production, so that the modified workload is small, the cost is low and the reliability is high.

The hydraulic braking device provided by the embodiment of the application can realize the switching between the manual braking mode and the automatic braking mode through the controller 30 by setting the second brake master cylinder 20 and the second switch 26 which are connected with the controller 30, can enlarge the applicable scene, and improves the convenience of braking operation.

As shown in fig. 1, in some embodiments, the hydraulic brake device further includes: a first sensor 17.

A first sensor 17 is mounted on the first conduit 15 at a location between the first master cylinder 10 and the first switch 16, the first sensor 17 being electrically connected to a controller 30, the controller 30 being configured to: in the automatic braking mode, if the first sensor 17 detects an oil pressure rise signal, the control driving module 24 outputs power based on the oil pressure rise signal so as to enable the brake actuator 40 to perform automatic braking; alternatively, the first switch 16 is opened and the second switch 26 is closed to allow the brake actuator 40 to perform manual braking.

It will be appreciated that in the automatic braking mode, the second switch 26 is open and the first switch 16 is closed, and the brake actuator 40 automatically brakes in response to the brake signal from the controller 30, i.e., if an obstacle is present on the road surface, the controller 30 may control the brake actuator 40 to decelerate via the second line 25.

However, if the driver steps on the brake pedal 14 at this time, the first sensor 17 senses the increase in the oil pressure in the first line 15 between the first master cylinder 10 and the first switch 16, that is, the detection of the oil pressure increase signal, and it is necessary to respond to the driver's operation of stepping on the brake pedal 14 to increase the user's control to the highest priority.

At this time, there may be two control strategies, one of which is to control the driving module 24 to output power according to the oil pressure increasing signal, so that the brake actuator 40 performs automatic braking, that is, the oil pressure increasing signal in the first pipeline 15 is fed back to the second pipeline 25 through the controller 30, so that the oil pressure in the second pipeline 25 is increased, so that the brake actuator 40 controls the vehicle to perform braking.

The second state is a state in which the first switch 16 and the second switch 26 are switched on, that is, the first switch 16 is turned on and the second switch 26 is turned off, so that the second line 25 is blocked, the first line 15 is conducted, and the brake actuator 40 can perform braking in accordance with the hydraulic pressure in the first line 15.

The two modes can be alternatively performed, namely, one of the two modes can ensure that manual control of a driver has the highest priority, accurate and efficient braking can be realized in an emergency, the emergency can cause physical discomfort of the driver and needs emergency stop, and the vehicle cannot automatically brake only because the vehicle hardly senses the physical condition of a user, so that the manual control of the driver is endowed with the highest priority, and the safety performance of vehicle braking can be improved.

As shown in fig. 1, in some embodiments, the hydraulic brake device further includes: a second sensor 27.

The second sensor 27 is installed at the second pipe 25, and the second sensor 27 is electrically connected to the controller 30.

It is understood that the second sensor 27 can sense the oil pressure in the second pipeline 25, and can feed back to the controller 30 in time according to the oil pressure in the second pipeline 25, so that the controller 30 adjusts the control strategy, for example, if the oil pressure in the second pipeline 25 is abnormal, the controller 30 can send a fault prompt, and the worker can repair the oil pressure in time.

As shown in FIG. 1, in some embodiments, the first master brake cylinder 10 has a first port 11 and a second port 12, the first port 11 communicating with a first end 41 of the brake actuator 40, the second port 12 communicating with a second end 42 of the brake actuator 40, and a first switch 16 mounted between the first port 11 and the first end 41 and between the second port 12 and the second end 42.

It will be appreciated that the first master cylinder 10 may have the first port 11 and the second port 12, and the first port 11, the second port 12, the first end 41 and the second end 42 form a closed circuit through the first conduit 15, so that a hydraulic circuit can be formed between the first master cylinder 10 and the brake actuator 40, and the response speed of the first master cylinder 10 and the brake actuator 40 can be increased.

The first switches 16 are installed between the first port 11 and the first end 41 and between the second port 12 and the second end 42, so that the second pipe 25 can be easily connected to the first pipe 15, and the second master cylinder 20 can be easily installed.

In some embodiments, as shown in FIG. 1, the second master cylinder 20 has a third port 21 and a fourth port 22, the third port 21 communicates with a first end 41 of the brake actuator 40, the fourth port 22 communicates with a second end 42 of the brake actuator 40, and the second switch 26 is mounted between the third port 21 and the first end 41 and between the fourth port 22 and the second end 42.

It will be appreciated that second master cylinder 20 may have third port 21 and fourth port 22, and that third port 21, fourth port 22, first end 41 and second end 42 may be closed by second conduit 25, thereby creating a hydraulic circuit between second master cylinder 20 and brake actuator 40 to increase the response speed of second master cylinder 20 and brake actuator 40.

In some embodiments, the first switch 16 is a normally open valve.

That is, the first switch 16 is selected to be a normally open valve, which can satisfy the manual braking mode of the vehicle in most cases, so that the controller 30 can avoid frequently controlling the first switch 16 to open and close, and the service life of the hydraulic braking device can be prolonged.

In some embodiments, the second switch 26 is a normally closed valve.

That is, the second switch 26 is selected to be a normally closed valve, which further satisfies the requirement that the manual braking mode is used in most cases, and the controller 30 can further avoid controlling the second switch 26 to be opened and closed frequently, thereby further prolonging the service life of the hydraulic braking device.

As shown in fig. 1, in some embodiments, the hydraulic brake device further includes: a first brake fluid tank 13 and a second brake fluid tank 23.

The first master cylinder 10 communicates with a first brake fluid tank 13, and the first brake fluid tank 13 is used to supply hydraulic fluid to the first master cylinder 10.

The second master cylinder 20 communicates with a second brake fluid tank 23, and the second brake fluid tank 23 is used to supply hydraulic fluid to the second master cylinder 20.

In some embodiments, at least one of the first switch 16 and the second switch 26 is a solenoid valve, and the solenoid valve (Electromagnetic valve) is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. There are many types of solenoid valves, with different solenoid valves functioning at different locations in the control system, the most common being one-way valves, safety valves, directional control valves, speed control valves, etc.

The first switch 16 and the second switch 26 may be solenoid valves, so that the control accuracy of the controller 30 on the first switch 16 and the second switch 26 can be improved, and the response speed can be increased.

In some embodiments, the drive module 24 includes: a speed reducing motor.

The reduction motor is an integrated body of a reduction gear and a motor (motor). Such an integrated body may also be generally referred to as a gear motor or gearmotor. The speed reducing motor has the characteristics of high efficiency and reliability, long service life, simple and convenient maintenance, wide application and the like. The stage number of the motor can be divided into a single-stage gear reduction motor, a two-stage gear reduction motor and a three-stage gear reduction motor, and the installation and arrangement modes mainly comprise an expansion type, a coaxial type and a split flow type.

The speed reducing motor is electrically connected with the controller 30, and the driving module 24 adopts the speed reducing motor here, so that the control precision of the controller 30 on the driving module 24 can be improved, and the response speed of the driving module 24 on the braking signal of the controller 30 can be improved.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A hydraulic brake apparatus, comprising:

the first brake master cylinder is in power coupling connection with a brake pedal, and the first brake master cylinder is communicated with the brake actuator through a first pipeline;

a first switch mounted to the first pipeline;

a second brake master cylinder, the second brake master cylinder and the brake actuator communicating through a second conduit;

the driving module is in power coupling connection with the second brake master cylinder;

a second switch mounted to the second pipeline;

the first switch, the second switch and the driving module are electrically connected with the controller, and the controller is set to turn on the first switch and turn off the second switch based on a trigger signal of the brake pedal in a manual braking mode; and in the automatic braking mode, the second switch is turned on, the first switch is turned off, and the driving module is controlled to output power.

2. The hydraulic brake apparatus of claim 1, wherein the controller is configured to turn on the second switch and turn off the first switch in an automatic braking mode, and output a driving signal via an output to an input of the driving module to control the driving module to output power.

3. A hydraulic brake arrangement according to claim 1, wherein the controller is arranged to switch between the manual braking mode and the automatic braking mode based on a mode selection signal input by a user.

4. The hydraulic brake device according to claim 1, characterized by further comprising:

a first sensor mounted on the first conduit at a location between the first master cylinder and the first switch, the first sensor electrically connected to the controller, the controller configured to: in an automatic braking mode, if the first sensor detects an oil pressure rising signal, the driving module is controlled to output power based on the oil pressure rising signal, so that the brake actuator performs automatic braking; or the first switch is opened and the second switch is closed, so that the brake actuator performs manual braking.

5. The hydraulic brake device according to claim 1, characterized by further comprising:

and the second sensor is arranged on the second pipeline and is electrically connected with the controller.

6. The hydraulic brake device of claim 1, wherein the first master cylinder has a first port in communication with a first end of the brake actuator and a second port in communication with a second end of the brake actuator, the first switch being mounted between the first port and the first end and between the second port and the second end.

7. The hydraulic brake device of claim 6, wherein the second master cylinder has a third port in communication with a first end of the brake actuator and a fourth port in communication with a second end of the brake actuator, the second switch being mounted between the third port and the first end and between the fourth port and the second end.

8. The hydraulic brake device of claim 7, wherein the first switch is a normally open valve.

9. The hydraulic brake device of claim 7, wherein the second switch is a normally closed valve.

10. The hydraulic brake device according to any one of claims 1 to 9, characterized by further comprising:

the first brake master cylinder is communicated with the first brake fluid tank;

and the second brake master cylinder is communicated with the second brake fluid tank.

11. The hydraulic brake device according to any one of claims 1 to 9, wherein at least one of the first switch and the second switch is a solenoid valve.

12. The hydraulic brake device according to any one of claims 1 to 9, wherein the drive module includes: the gear motor is electrically connected with the controller.