Hydraulic braking device, braking equipment and vehicle

Abstract

The utility model provides a hydraulic braking device, braking equipment and a vehicle, and relates to the technical field of hydraulic pressure. The hydraulic braking device comprises a body, a piston and a pressure valve assembly. The body is arranged on a vehicle; the body comprises a piston cavity and a connecting port, and the piston cavity is communicated with the brake through the connecting port; the piston is arranged in the piston cavity in a sealed mode, the piston cavity can be used for containing brake fluid, and the piston can move relative to the piston cavity so as to change the size of the piston cavity. The body further comprises a valve set cavity, and at least one part of the pressure valve assembly is arranged in the valve set cavity. The valve group cavity is communicated with the piston cavity, and / or the valve group cavity is communicated with the connector; the pressure valve assembly is used for adjusting the pressure in the valve bank cavity. By means of the hydraulic braking device, the size of the hydraulic braking device can be reduced, and cost is saved.

Description

Technical Field

[0001] The present application relates to the field of hydraulic technology, and in particular to a hydraulic braking device, a braking equipment and a vehicle. Background Art

[0002] During the driving of a vehicle, according to the driver's braking instruction, a hydraulic braking device generates a frictional effect on a brake through hydraulic transmission, so as to decelerate or stop the vehicle. In order to reduce the phenomenon of wheel lock during braking, an anti-lock braking system is usually added.

[0003] In the related art, since a hydraulic braking device and an anti-lock braking system include a plurality of complex mechanical components and hydraulic pipelines, their connection volume is large and the production cost is high. Summary of the Utility Model

[0004] The present application provides a hydraulic braking device, a braking equipment and a vehicle, which can reduce the volume of the hydraulic braking device and save costs.

[0005] In a first aspect, the present application provides a hydraulic braking device for connecting with a brake. The hydraulic braking device includes: a body, a piston, and a pressure valve assembly. The body is arranged on a vehicle; the body includes a piston cavity and a connection port, and the piston cavity is communicated with the brake through the connection port; the piston is sealingly arranged in the piston cavity, the piston cavity can be used to accommodate brake fluid, and the piston can move relative to the piston cavity to change the volume of the piston cavity; the body further includes a valve group cavity, and at least a part of the pressure valve assembly is arranged in the valve group cavity; the valve group cavity is communicated with the piston cavity, and / or the valve group cavity is communicated with the connection port; the pressure valve assembly is used to adjust the pressure in the valve group cavity.

[0006] The hydraulic braking device provided by the present application includes a piston cavity on the body. The piston cavity can be used to accommodate brake fluid, and a piston is arranged in the piston cavity. Therefore, when the piston moves relative to the piston cavity, the volume in the piston cavity is reduced, and the pressure of the brake fluid accommodated in the piston cavity increases. Since the piston cavity is communicated with the brake through a connection port, the brake fluid can flow to the brake through the connection port, and the increased pressure of the brake fluid can provide braking force for the brake, causing the vehicle to decelerate or stop. The body also includes a valve group cavity, and at least a part of the pressure valve assembly is arranged in the valve group cavity. Since the valve group cavity is communicated with the piston cavity, when the pressure valve assembly adjusts the pressure in the valve group cavity, the pressure in the piston cavity will also change accordingly, thereby adjusting the pressure of the brake fluid in the piston cavity and adjusting the braking force generated by the brake fluid on the brake, reducing the situation of wheel lock-up. At the same time, in one case or another, the valve group cavity is communicated with the connection port. Since the piston cavity is communicated with the brake through the connection port, by changing the pressure in the valve group cavity, the pressure at the connection port can be changed, thereby changing the braking force generated by the brake fluid on the brake, reducing the situation of wheel lock-up. With such a structure, the pressure valve assembly for adjusting the braking force and the piston structure for providing braking force for the brake can be arranged in the body at the same time, and the effects of braking and anti-lock of the brake can be achieved simultaneously. Compared with the related art in which the hydraulic braking device and the anti-lock system need to be connected through multiple complex mechanical components and hydraulic pipelines, the hydraulic braking device provided by the present application reduces the number of mechanical components and the complexity of the mechanical components and hydraulic pipelines of the hydraulic braking device by arranging the pressure valve assembly for adjusting the braking force and the piston structure for providing braking force for the brake in the body at the same time. Therefore, by applying a hydraulic braking device provided by the present application, the volume of the hydraulic braking device can be reduced and the cost can be saved.

[0007] In a possible implementation manner of the present application, the body further includes a storage cavity, and the storage cavity is communicated with the valve group cavity and the piston cavity respectively. The storage cavity can be used to store brake fluid.

[0008] In a possible implementation manner of the present application, the valve group cavity includes a first cavity, and the pressure valve assembly includes a pressure reducing valve. The pressure reducing valve is arranged in the first cavity; the first cavity is communicated with the piston cavity, and / or the first cavity is communicated with the connection port; the pressure reducing valve is used to reduce the pressure in the first cavity.

[0009] In a possible implementation manner of the present application, the liquid inlet of the first cavity is communicated with the piston cavity, and / or the liquid inlet of the first cavity is communicated with the connection port; the liquid outlet of the first cavity is communicated with the storage cavity; the pressure reducing valve can move relative to the first cavity so that the first cavity and the piston cavity are in a communicating state or a blocking state; and / or the pressure reducing valve can move relative to the first cavity so that the first cavity and the connection port are in a communicating state or a blocking state.

[0010] In a possible implementation manner of the present application, the pressure reducing valve can move outward of the first cavity to reduce the space occupied by the pressure reducing valve in the first cavity.

[0011] In a possible implementation manner of the present application, the valve group cavity further includes a second cavity, and the pressure valve assembly further includes a pressure increasing valve which is arranged in the second cavity; the second cavity is communicated with the piston cavity, and / or the second cavity is communicated with the connection port; the pressure increasing valve can move into the second cavity to increase the space occupied by the pressure increasing valve in the second cavity.

[0012] In a possible implementation manner of the present application, both the pressure increasing valve and the pressure reducing valve are hermetically connected to the body.

[0013] In a possible implementation manner of the present application, the pressure increasing valve and the pressure reducing valve are electromagnetic valves.

[0014] In a possible implementation manner of the present application, the pressure valve assembly is arranged on any side of the body in the vehicle forward direction.

[0015] In a possible implementation manner of the present application, the storage cavity is communicated with the piston cavity through the first channel of the body. When the piston moves relative to the piston cavity to provide pressure to the brake fluid, the outlet of the first channel communicating with the piston cavity is closed.

[0016] In a possible implementation manner of the present application, the hydraulic braking device further includes a control unit which is electrically connected to the pressure valve assembly. The control unit is used to control the movement of the pressure valve assembly in the valve group cavity to regulate the pressure in the valve group cavity.

[0017] In a second aspect, the present application provides a braking device which includes a brake and the hydraulic braking device of the first aspect. The hydraulic braking device is communicated with the brake through the connection port.

[0018] In a third aspect, the present application provides a vehicle which includes a wheel speed sensor and the braking device of the second aspect. The wheel speed sensor is used to obtain the wheel speed of the vehicle; the wheel speed sensor is electrically connected to the control unit and is used to transmit an instruction to the pressure valve assembly of the braking device according to the wheel speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the hydraulic braking device provided by the present application installed on a vehicle handlebar;

[0020] Figure 2 It is a schematic structural diagram of the hydraulic braking device provided by the present application;

[0021] Figure 3 It is an exploded view of the hydraulic braking device provided by the present application;

[0022] Figure 4 Cross-sectional view (one) of the hydraulic braking device provided by this application;

[0023] Figure 5 Cross-sectional view (two) of the hydraulic braking device provided by this application;

[0024] Figure 6 Cross-sectional view (three) of the hydraulic braking device provided by this application;

[0025] Figure 7 Cross-sectional view (four) of the hydraulic braking device provided by this application;

[0026] Figure 8 Working principle diagram of the hydraulic braking device provided by this application.

[0027] Explanation of reference numerals:

[0028] 1 - Body; 11 - Piston cavity; 12 - Connection port; 13 - Valve group cavity; 131 - First cavity; 1311 - Liquid inlet; 1312 - Liquid outlet; 132 - Second cavity; 14 - Storage cavity; 141 - Groove; 142 - Cover; 143 - Seal; 144 - Screw; 15 - Flow channel; 2 - Piston; 21 - First end; 22 - Second end; 23 - Elastic member; 3 - Pressure valve assembly; 31 - Pressure reducing valve; 311 - First fixing part; 312 - First moving part; 32 - Pressure increasing valve; 321 - Second fixing part; 322 - Second moving part; 33 - Electromagnetic coil; 34 - Solenoid valve cover; 35 - Wire; 36 - Connector; 37 - Valve cover sealing ring; 4 - Brake pull rod; 5 - Brake; Y - Vehicle forward direction. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will further describe the specific technical solutions of this application in detail with reference to the accompanying drawings in the embodiments of this application. The following embodiments are used to illustrate this application but are not used to limit the scope of this application.

[0030] In the embodiments of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of this application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0031] In addition, in the embodiments of the present application, orientation terms such as "upper", "lower", "left", and "right" are defined relative to the orientation in which the components in the drawings are schematically placed. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and they can change accordingly with the change of the orientation in which the components in the drawings are placed.

[0032] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium.

[0033] In the embodiments of the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0034] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0035] With the awakening of users' safety awareness and the rapid growth of the market's demand for high safety standards. Currently, most vehicles are equipped with a dual-channel anti-lock braking system (ABS). Some electric two-wheelers are expanding towards medium and high speeds. Installing ABS on electric two-wheelers can improve the safety performance of the vehicles, especially for motorcycles with a displacement exceeding 150 cubic centimeters (cc).

[0036] In an emergency, the ABS system makes the motorcycle more stable by controlling the braking force of each wheel, so that the driver can better control the motorcycle in an emergency situation, allowing the driver to turn while braking, which helps to avoid obstacles ahead and maintain the stability of the vehicle. The vehicles provided in the embodiments of the present application include electric two-wheelers, motorcycles, etc.

[0037] Refer to Figure 1, this application provides a vehicle, which includes a wheel speed sensor and a braking device. The wheel speed sensor is used to obtain the rotational speed of the vehicle's wheels; the control unit of the braking device is electrically connected to the wheel speed sensor; the control unit is used to transmit an instruction to the pressure valve assembly 3 of the braking device according to the wheel rotational speed.

[0038] In the embodiments of this application, the wheel speed sensor is used to obtain the real-time rotational speed of the vehicle's wheels. The wheel speed sensor is usually installed on the wheel or the transmission shaft, and senses and measures the change of the magnetic field or magnetic flux during the rotation of the wheel. The wheel speed sensor generally includes a magnetoelectric wheel speed sensor and a Hall wheel speed sensor, etc., and a suitable wheel speed sensor can be selected according to the requirements of different vehicles.

[0039] In the embodiments of this application, the braking device further includes a pressure valve assembly 3. The pressure valve assembly 3 is connected to the hydraulic transmission system. The pressure valve assembly 3 is used to adjust the pressure in the brake cylinder, thereby adjusting the braking force transmitted to the brake 5, adjusting the frictional force between the brake 5 and the wheel, and reducing the situation of wheel lock-up.

[0040] In the embodiments of this application, the control unit receives the wheel rotational speed information from the wheel speed sensor, and processes and analyzes these data in real time; according to the preset algorithms and logics, the control unit can judge the driving state and braking requirements of the vehicle; based on the results of data processing, the control unit sends precise instructions to the pressure valve assembly 3 of the braking system to adjust the magnitude and distribution of the braking pressure.

[0041] For the vehicle provided in the embodiments of this application, by real-time monitoring of the wheel rotational speed, the wheel speed sensor can obtain the dynamic changes of the vehicle's wheel rotational speed, such as abnormal conditions like slipping and lock-up; after this information is transmitted to the control unit of the braking device, the control unit can optimize the braking force distribution by adjusting the pressure valve assembly 3, reducing the situation of wheel locking or excessive slipping, thereby effectively improving the stability and safety of the vehicle during emergency braking and driving on slippery roads.

[0042] Refer to Figure 1 and Figure 8 , this application provides a braking device, which includes a brake 5 and a hydraulic braking device. The hydraulic braking device is communicated with the brake 5 through a connection port 12.

[0043] In the embodiments of this application, the most basic function of the braking device is to decelerate the vehicle and finally stop it. When the driver performs a braking action, the braking system slows down the rotational speed of the wheels by generating frictional force, thereby decelerating the vehicle and finally stopping it. The braking device usually includes a brake 5, a brake assist system, a hydraulic transmission system or a pneumatic transmission system, a master cylinder and a wheel cylinder, etc.

[0044] In the embodiments of the present application, the connection port 12 can be an integral structure with the hydraulic braking device or a split type, and the connection port 12 is connected to the hydraulic braking device; for example, the connection port 12 and the hydraulic braking device can adopt a quick-connect threaded joint, and tightening and loosening can be achieved by rotation, which not only ensures the reliability of the connection but also improves the operation efficiency.

[0045] For the braking device provided in the embodiments of the present application, the hydraulic brake 5 is communicated with the brake 5 through the connection port 12, and the hydraulic brake 5 can provide braking force for the brake 5.

[0046] In the related art, since the hydraulic braking device and the anti-lock braking system include multiple complex mechanical components and hydraulic pipelines, they are relatively large in volume and high in production cost when connected.

[0047] Refer to Figure 3 、 Figure 4 、 Figure 6 and Figure 7 , the present application provides a hydraulic braking device for connecting with the brake 5, and the hydraulic braking device includes: a body 1, a piston 2, and a pressure valve assembly 3. The body 1 is arranged on the vehicle; the body 1 includes a piston cavity 11 and a connection port 12, and the piston cavity 11 is communicated with the brake 5 through the connection port 12; the piston 2 is hermetically arranged in the piston cavity 11, the piston cavity 11 can be used to accommodate brake fluid, and the piston 2 can move relative to the piston cavity 11 to change the volume of the piston cavity 11; the body 1 further includes at least a part of the pressure valve assembly 3 arranged in the valve group cavity 13; the valve group cavity 13 is communicated with the piston cavity 11, and / or the valve group cavity 13 is communicated with the connection port 12; the pressure valve assembly 3 is used to adjust the pressure in the valve group cavity 13 and adjust the braking force generated by the brake fluid on the brake 5, reducing the situation of wheel lock-up; at the same time, in one case or another, the valve group cavity 13 is communicated with the connection port 12. Since the piston cavity 11 is communicated with the brake 5 through the connection port 12, by changing the pressure in the valve group cavity 13, the pressure at the connection port 12 can be changed, and further the braking force generated by the brake fluid on the brake 5 can be changed, reducing the situation of wheel lock-up.

[0048] In the embodiments of the present application, refer to Figure 1 , the body 1 is arranged on the handle of the vehicle. At least a part of the body 1 can be embedded in the internal structure of the vehicle handle, so that the body 1 does not occupy too much external space and at the same time keeps the appearance of the handle simple. A special bracket or module can also be attached to the outside of the vehicle handle for installing the body 1. The body 1 and the vehicle handle can also be made into an integral structure, so that the body 1 and the vehicle handle form a whole in terms of function and appearance. The body 1 can be made of materials such as stainless steel and aluminum alloy with high strength, corrosion resistance, and wear resistance.

[0049] In the embodiments of the present application, the hydraulic braking device can be connected to the tie rod assembly of the vehicle. The tie rod assembly is a transmission device between the brake handle and other parts of the braking system, and is responsible for transmitting the force applied by the rider on the brake lever 4 to an actuator such as a brake pump or a brake caliper.

[0050] In the embodiments of the present application, referring to Figure 1 and Figure 4 , the first end 21 of the piston 2 is located inside the piston cavity 11, and the second end 22 is located outside the piston cavity 11. The end of the second end 22 can abut against the brake lever 4. When the rider applies a force to the brake lever 4, the brake lever 4 pushes the piston 2 to move inward into the piston cavity 11, and the pressure inside the piston cavity 11 increases; an elastic member 23 is also provided on the first end 21 of the piston 2. When the rider removes the force applied to the brake lever 4, the elastic member 23 can provide a restoring force for the piston 2 to move outward from the piston cavity 11, and thus the pressure inside the piston cavity 11 decreases.

[0051] In the embodiments of the present application, the piston cavity 11 is a space or area inside the body 1. The shape and size of the piston cavity 11 are usually determined according to the size and shape of the piston 2, so that the piston 2 can move smoothly and effectively inside the piston cavity 11. The piston cavity 11 can be used to accommodate the brake fluid. As the piston 2 moves inside the piston cavity 11, the volume of the piston cavity 11 can be changed, and the brake fluid can be compressed or released accordingly to generate the braking force required for braking.

[0052] In the embodiments of the present application, when the pressure inside the piston cavity 11 increases, the pressure of the brake fluid increases, and the braking force transmitted to the brake 5 will increase; conversely, when the pressure inside the piston cavity 11 decreases, the pressure of the brake fluid decreases, and the braking force transmitted to the brake 5 will decrease.

[0053] In the embodiments of the present application, the piston 2 is hermetically arranged inside the piston cavity 11. At least one sealing ring can be arranged in the circumferential direction of the piston 2, and the sealing ring is closely attached to the inner wall of the piston cavity 11 to reduce the overflow of the brake fluid; alternatively, at least one sealing groove can be arranged on the inner wall of the piston cavity 11, and the sealing ring is arranged in the sealing groove, and the sealing ring is closely attached to the outer wall in the circumferential direction of the piston 2 to reduce the overflow of the brake fluid.

[0054] In the embodiments of the present application, referring to Figure 3 , Figure 6 and Figure 7 , the piston cavity 11 is communicated with the brake 5 through the connection port 12. The connection port 12 can be integrally formed with the body 1 to communicate the connection port 12 and the piston cavity 11; referring to Figure 3, the connection port 12 can also be designed separately from the main body 1 and connected to the main body 1 through connection means such as threads, and the connection port 12 is communicated with the piston cavity 11. By way of example, an intermediate transition component (such as a distribution block, a manifold block, etc.) is provided between the connection port 12 and the piston cavity 11, and the distribution and transmission of hydraulic pressure are realized through this component, which can increase the flexibility and maintainability of the system.

[0055] In the embodiment of the present application, the valve group cavity 13 is a space or area inside the main body 1. The pressure valve assembly 3 is arranged in the valve group cavity 13, and it can also be used to accommodate the brake fluid. The part of the pressure valve assembly 3 for regulating the pressure in the valve group cavity 13 is arranged in the valve group cavity 13, and the other part for controlling the movement of the pressure valve assembly 3 is arranged outside the valve group cavity 13.

[0056] In the embodiment of the present application, the main body 1 is provided with a channel that can communicate the valve group cavity 13 and the piston cavity 11 between the valve group cavity 13 and the piston cavity 11; or, the main body 1 is provided with channels respectively for communicating the piston cavity 11 and the connection port 12 in the valve group cavity 13; or the main body 1 is provided with a communicating channel between the valve group cavity 13 and the connection port 12, so that the brake fluid can flow between the piston cavity 11, the valve group cavity 13, and the connection port 12.

[0057] The hydraulic braking device provided by the embodiment of the present application includes a piston cavity 11 on the body 1. The piston cavity 11 can be used to accommodate brake fluid. A piston 2 is arranged in the piston cavity 11. Therefore, when the piston 2 moves relative to the piston cavity 11, the volume in the piston cavity 11 is reduced, and the pressure of the brake fluid accommodated in the piston cavity 11 increases. Since the piston cavity 11 is communicated with the brake 5 through the connection port 12, the brake fluid can flow to the brake 5 through the connection port 12. The increased pressure of the brake fluid can provide braking force for the brake 5 to decelerate or stop the vehicle. The body 1 also includes a valve group cavity 13. At least a part of the pressure valve assembly 3 is arranged in the valve group cavity 13. Since the valve group cavity 13 is communicated with the piston cavity 11, when the pressure valve assembly 3 adjusts the pressure in the valve group cavity 13, the pressure in the piston cavity 11 will also change accordingly, thereby adjusting the pressure of the brake fluid in the piston cavity 11 and adjusting the braking force generated by the brake fluid on the brake 5 to reduce the situation of wheel locking. At the same time, in one case or another, the valve group cavity 13 is communicated with the connection port 12. Since the piston cavity 11 is communicated with the brake 5 through the connection port 12, by changing the pressure in the valve group cavity 13, the pressure at the connection port 12 can be changed, thereby changing the braking force generated by the brake fluid on the brake 5 to reduce the situation of wheel locking. With such a structure, the pressure valve assembly 3 for adjusting the magnitude of the braking force and the piston 2 structure for providing the braking force for the brake 5 can be arranged in the body 1 at the same time, and the effects of braking and anti-lock of the brake 5 can be achieved simultaneously. Compared with the related art in which the hydraulic braking device and the anti-lock system need to be connected by a plurality of complex mechanical components and hydraulic pipelines, the hydraulic braking device provided by the present application reduces the number of mechanical components and the complexity of the mechanical components and hydraulic pipelines of the hydraulic braking device by arranging the pressure valve assembly 3 for adjusting the magnitude of the braking force and the piston 2 structure for providing the braking force for the brake 5 in the body 1 at the same time. Therefore, by applying the hydraulic braking device provided by the present application, the volume of the hydraulic braking device can be reduced and the cost can be saved.

[0058] In addition, compared with the prior art solution of separately arranging an ABS component on the vehicle, the hydraulic braking device provided by the present application combines the pressure valve assembly 3 for adjusting the magnitude of the braking force and the vehicle's braking system. When it is necessary to install an ABS system or replace the ABS system on the vehicle, only the body 1 in the original hydraulic braking device of the vehicle needs to be disassembled and replaced with the body 1 (the pressure valve assembly 3 is installed on the body 1) in the hydraulic braking device provided by the embodiment of the present application. In this way, without removing other components of the vehicle, the hydraulic braking device in the vehicle can be replaced with a braking system of an ABS system having the hydraulic braking device provided by the present application. Therefore, the hydraulic braking device provided by the embodiment of the present application is also convenient for realizing the replacement, installation and maintenance of the ABS system of the vehicle.

[0059] The present application provides a hydraulic braking device. Refer toFigure 4 , Figure 5 , Figure 6 and Figure 7 , the body 1 further includes a storage cavity 14 which is respectively communicated with the valve group cavity 13 and the piston cavity 11, and the storage cavity 14 can be used to store brake fluid.

[0060] In the embodiment of the present application, the storage cavity 14 can be an area and space arranged inside the body 1, or a cavity formed in a structure connected to the body 1, which is used to store brake fluid, and provides brake fluid for the piston cavity 11 and the valve group cavity 13 when the hydraulic braking device works, and recovers the brake fluid flowing back from the piston cavity 11 and the valve group cavity 13 when the hydraulic braking device does not perform braking operations or performs anti-lock braking operations.

[0061] In the embodiment of the present application, a one-way valve can be used to communicate between the storage cavity 14 and the valve group cavity 13, so that the brake fluid in the storage cavity 14 can flow into the piston cavity 11, but when the pressure in the piston cavity 11 increases, the brake fluid in the piston 2 cavity 11 will not flow back into the storage cavity 14, improving the effect of the brake fluid in the piston 2 cavity 11 providing braking force.

[0062] In the embodiment of the present application, the storage cavity 14 can be set as an integral closed cavity or an open cavity. For example, referring to Figure 3 and Figure 4 , a groove 141 is provided on the body 1, and a cover body 142 covers the opening of the groove 141, and a first cavity 131 is formed between the groove 141. The groove 141 is used to accommodate brake fluid, and a seal 143 is also provided between the cover body 142 and the groove 141. The cover body 142 can seal and connect the seal 143 and the body 1 through a screw 144 to reduce the overflow of brake fluid, and the connection between the cover body 142 and the body 1 can also be achieved through other connection methods.

[0063] For the hydraulic braking device provided by the embodiment of the present application, the storage cavity 14 is respectively communicated with the valve group cavity 13 and the piston cavity 11, and the brake fluid stored in the storage cavity 14 can flow into the valve group cavity 13 and the piston cavity 11. When the vehicle braking and anti-lock system works, the brake fluid can flow through different cavities to achieve corresponding braking effects.

[0064] Referring to Figure 3 , Figure 6 and Figure 7, this application provides a hydraulic braking device. The valve group cavity 13 includes a first cavity 131, and the pressure valve assembly 3 includes a pressure reducing valve 31. The pressure reducing valve 31 is arranged in the first cavity 131; the first cavity 131 is communicated with the piston cavity 11, and / or the first cavity 131 is communicated with the connection port 12; the pressure reducing valve 31 is used to reduce the pressure in the first cavity 131.

[0065] In the embodiment of this application, the valve group cavity 13 may include multiple functional regions or sub-cavities, and these functional regions or sub-cavities can be used to accommodate valve bodies or components with different functions.

[0066] In the embodiment of this application, the pressure valve assembly 3 includes a pressure reducing valve 31, and the pressure reducing valve 31 is used to reduce the pressure in the first cavity 131. The pressure reducing valve 31 can be an electric pressure reducing valve 31, and the fluid pressure is controlled by a motor; the pressure reducing valve 31 can also be a pneumatic pressure reducing valve 31, and the fluid pressure is controlled by air or gas pressure. Exemplarily, the pneumatic pressure reducing valve 31 can be directly installed in the first cavity 131, and the inlet and outlet of the pressure reducing valve 31 are correctly connected to the fluid channel of the first cavity 131 so that the brake fluid can flow. As needed, the pressure reducing valve 31 and the inner wall of the first cavity 131 on the body 1 can be connected by means of threaded connection or snap connection.

[0067] For the hydraulic braking device provided by the embodiment of this application, the first cavity 131 is communicated with the piston cavity 11. When the pressure reducing valve 31 reduces the pressure in the first cavity 131, the pressure in the piston cavity 11 will also decrease. The piston cavity 11 is connected to the brake 5 through the connection port 12. That is, when the first cavity 131 and / or the connection port 12 are communicated, the pressure reducing valve 31 reduces the pressure in the first cavity 131, and the pressure of the connection port 12 will also decrease; therefore, the braking force transmitted to the brake 5 will decrease, and the phenomenon of vehicle braking lock can be alleviated.

[0068] This application provides a hydraulic braking device. Refer to Figure 5 and Figure 7 , the liquid inlet 1311 of the first cavity 131 is communicated with the piston cavity 11, and / or the liquid inlet 1311 of the first cavity 131 is communicated with the connection port 12; the liquid outlet 1312 of the first cavity 131 is communicated with the storage cavity 14; the pressure reducing valve 31 can move relative to the first cavity 131 so that the first cavity 131 and the piston cavity 11 are in a communicated state or a blocked state; and / or the pressure reducing valve 31 can move relative to the first cavity 131 so that the first cavity 131 and the connection port 12 are in a communicated state or a blocked state.

[0069] In the embodiments of the present application, the pressure reducing valve 31 can move relative to the first cavity 131 to put the first cavity 131 and the connection port 12 in a communicating state or a blocking state. By way of example, the main body of the pressure reducing valve 31 can be a rotatable component, and the communication or blocking between the connection port 12 of the first cavity 131 is controlled by a rotational movement. When the pressure reducing valve 31 rotates to a certain position, the channel inside the pressure reducing valve 31 aligns with the connection port 12 of the first cavity 131 to achieve a communicating state; when rotated to another position, the channel is blocked to achieve a blocking state.

[0070] In the hydraulic braking device provided by the embodiments of the present application, the movement of the pressure reducing valve 31 relative to the first cavity 131 can put the first cavity 131 and the piston cavity 11 in a communicating state or a blocking state. The liquid inlet 1311 of the first cavity 131 is in communication with the piston cavity 11, and the liquid outlet 1312 of the first cavity 131 is in communication with the storage cavity 14. When the first cavity 131 and the piston cavity 11 are in a communicating state, since the piston 2 applies pressure to the brake fluid in the braking state, the brake fluid will flow into the first cavity 131 from the liquid inlet 1311 and then flow back to the storage cavity 14, and the pressure in the piston cavity 11 will decrease accordingly, and the pressure received by the brake fluid will decrease, so that when the wheels are about to lock, the pressure applied by the brake fluid to the brake 5 will decrease, and the wheels will resume rotation. When the pressure reducing valve 31 puts the first cavity 131 and the piston cavity 11 in a blocking state, the pressure in the piston cavity 11 is restored and can continue to increase according to the movement of the piston 2, and the braking force of the brake 5 can be increased again.

[0071] Since the piston cavity 11 is in communication with the brake 5 through the connection port 12, therefore, whether the first cavity 131 is directly in communication with the connection port 12, or the first cavity 131 is in communication with both the piston cavity 11 and the connection port 12 at the same time, the above effects can be achieved.

[0072] The present application provides a hydraulic braking device, and the pressure reducing valve 31 can move out of the first cavity 131 to reduce the space occupied by the pressure reducing valve 31 inside the first cavity 131.

[0073] In the embodiments of the present application, the pressure reducing valve 31 can move out of the first cavity 131. By way of example, the structure of the pressure reducing valve 31 can be a component that can slide along a certain side wall of the first cavity 131 or the bottom of the first cavity 131. When it is necessary to reduce the space occupied by the pressure reducing valve 31 inside the first cavity 131, the pressure reducing valve 31 is slid outwards along the sliding track by manual, electric or pneumatic operations.

[0074] In another example, the structure of the pressure reducing valve 31 can be a telescopic component, including a fixed part and a movable part. The movable part is connected to the fixed part by a spring or the like, and enables the movable part to expand and contract within a certain range. By making the movable part contract towards the fixed part, the occupied space of the pressure reducing valve 31 in the first cavity 131 can be reduced.

[0075] In the hydraulic braking device provided by the embodiment of the present application, when the pressure reducing valve 31 moves out of the first cavity 131, the space occupied by the pressure reducing valve 31 in the first cavity 131 decreases, the space in the first cavity 131 becomes larger, the pressure in the first cavity 131 decreases, and the brake fluid can flow into the first cavity 131 from the piston cavity 11 through the liquid inlet 1311. The pressure in the piston cavity 11 decreases accordingly, the pressure received by the brake fluid decreases, and thus the pressure exerted by the brake fluid on the brake 5 decreases when the wheel is about to lock, enabling the wheel to resume rotation.

[0076] The present application provides a hydraulic braking device. Referring to Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , the valve group cavity 13 further includes a second cavity 132, and the pressure valve assembly 3 further includes a pressure increasing valve 32. The pressure increasing valve 32 is disposed in the second cavity 132; the second cavity 132 is in communication with the piston cavity 11, and / or the second cavity 132 is in communication with the connection port 12; the pressure increasing valve 32 can move into the second cavity 132 to increase the space occupied by the pressure increasing valve 32 in the second cavity 132.

[0077] In the embodiment of the present application, the valve group cavity 13 may include multiple functional regions or sub - cavities. The pressure increasing valve 32 is disposed in the second cavity 132, which can increase the pressure in the valve group cavity 13. The first cavity 131 and the second cavity 132 can be unidirectionally communicated, enabling the brake fluid to flow unidirectionally from the first cavity 131 into the second cavity 132, reducing the backflow of the brake fluid into the first cavity 131 when the pressure increasing valve 32 increases the pressure in the second cavity 132 and affecting the pressure increasing effect of the pressure increasing valve 32.

[0078] In the embodiment of the present application, the second cavity 132 and the storage cavity 14 are communicated using a one - way valve, enabling the brake fluid to enter the second cavity 132 from the storage cavity 14, but when the pressure increasing valve 32 increases the pressure in the second cavity 132, the brake fluid will not flow back from the second cavity 132 into the storage cavity 14, enabling the brake fluid in the pressure increasing valve 32 to flow into the piston 2 cavity 11 or the connection port 12 and improving the pressure increasing effect of the pressure increasing valve 32.

[0079] In the embodiments of the present application, the second cavity 132 is in communication with the piston cavity 11, and / or the second cavity 132 is in communication with the connection port 12. A flow passage 15 communicating the second cavity 132 with the piston cavity 11 and / or the second cavity 132 with the connection port 12 may be provided on the body 1, so that the brake fluid can flow between the second cavity 132, the piston cavity 11, and the connection port 12. The second cavity 132 may also be communicated with the piston cavity 11 and / or the second cavity 132 with the connection port 12 through an external pipeline or hose.

[0080] In the embodiments of the present application, the pressure increasing valve 32 can move into the second cavity 132 to increase the space occupied by the pressure increasing valve 32 in the second cavity 132. Exemplarily, the structure of the pressure increasing valve 32 can be a rotatable component. The pressure increasing valve 32 can be threadedly connected to the inner wall of the second cavity 132. By operating the part of the pressure increasing valve 32 provided outside the second cavity 132, the pressure increasing valve 32 provided in the second cavity 132 can be rotated towards the inside of the second cavity 132.

[0081] In another embodiment, the structure of the pressure increasing valve 32 can be a telescopic component, including a fixed part and a movable part. The movable part is connected to the fixed part through a spring or the like, and enables the movable part to be telescopic within a certain range. By extending the movable part towards the fixed part, the occupied space of the pressure increasing valve 32 in the second cavity 132 can be increased.

[0082] In the hydraulic braking device provided by the embodiments of the present application, the pressure increasing valve 32 is arranged in the second cavity 132. When the pressure increasing valve 32 moves into the second cavity 132, the pressure increasing valve 32 occupies the volume in the second cavity 132, and the pressure in the second cavity 132 increases; since the second cavity 132 is in communication with the piston cavity 11, and / or the second cavity 132 is in communication with the connection port 12, and the piston cavity 11 is in communication with the brake 5 through the connection port 12, therefore, when the pressure in the second cavity 132 increases, the pressures in the piston cavity 11 and the connection port 12 will both increase, so that the braking force transmitted to the brake 5 will increase to provide sufficient braking force.

[0083] The present application provides a hydraulic braking device, in which the pressure increasing valve 32 and the pressure reducing valve 31 are both hermetically connected to the body 1.

[0084] In the embodiments of the present application, since the pressure increasing valve 32 can move relative to the second cavity 132 and the pressure reducing valve 31 can move relative to the first cavity 131, therefore, the pressure reducing valve 31 can be provided with a first fixing part 311 and a first moving part 312, and the pressure increasing valve 32 can be provided with a second fixing part 321 and a second moving part 322. The first moving part 312 can move in the first cavity 131, the second moving part 322 can move in the second cavity 132, and the first fixing part 311 and the second fixing part 321 are used for connecting to the body 1.

[0085] In the embodiments of the present application, the connection manner between the fixing part and the main body 1 can be threaded connection, snap connection, etc. A sealing part can be arranged in the area where the fixing part is connected to the main body 1. The material of the sealing part can be selected for its oil resistance, wear resistance, and temperature resistance properties. At the same time, technologies such as metal sealing surfaces or coating seals can also be used to improve the sealing performance of the area where the fixing part is connected to the main body 1.

[0086] In the hydraulic braking device provided by the embodiments of the present application, since both the pressure increasing valve 32 and the pressure reducing valve 31 are hermetically connected to the main body 1, it is possible to reduce the leakage of the brake fluid from the connection between the pressure increasing valve 32, the pressure reducing valve 31 and the main body 1, which affects the pressure regulation of the piston cavity 11 and the valve group cavity 13.

[0087] The present application provides a hydraulic braking device, and the pressure increasing valve 32 and the pressure reducing valve 31 are solenoid valves.

[0088] In the embodiments of the present application, with reference to Figure 3 and Figure 7 , at least a part of the pressure valve assembly 3 is arranged in the valve group cavity 13, and the other part is exposed outside the main body 1. An electromagnetic coil 33 is arranged on the pressure valve assembly 3 exposed outside the main body 1. When the electromagnetic coil 33 is energized, it can control the movement of the pressure valve assembly 3.

[0089] In the embodiments of the present application, in order to increase the stability of the electromagnetic coil 33 and provide protection for the electromagnetic coil 33 and the solenoid valve, the pressure valve assembly 3 can further include a solenoid valve cover 34 arranged outside the electromagnetic coil 33. A wire 35 for supplying power to the electromagnetic coil 33 is connected to the solenoid valve cover 34, and the wire 35 is electrically connected to the power supply device of the vehicle. The wire 35 is electrically connected to the electromagnetic coil 33 through the solenoid valve cover 34 to supply power to the electromagnetic coil 33.

[0090] In the embodiments of the present application, the solenoid valve cover 34 can be connected to the main body 1 by means of snap connection, welding, etc. For example, the solenoid valve cover 34 can be installed on the main body 1 through a connecting member 36. In order to further improve the stability of the pressure valve assembly 3, a valve cover sealing ring 37 can also be added between the electromagnetic coil 33 and the solenoid valve cover 34 to improve the sealing performance between the electromagnetic coil 33 and the solenoid valve cover 34.

[0091] In the hydraulic braking device provided by the embodiments of the present application, since the pressure increasing valve 32 and the pressure reducing valve 31 are solenoid valves, when it is necessary to adjust the pressure in the valve group cavity 13, when the electromagnet is energized, it generates a magnetic force to attract the valve core, so that the pressure increasing valve 32 and the pressure reducing valve 31 are opened; when the power is off, the magnetic force disappears, so that the pressure increasing valve 32 and the pressure reducing valve 31 are closed. In this process, the response time of the pressure increasing valve 32 and the pressure reducing valve 31 to the electromagnetic force is relatively short, and the movement of the valve body can be quickly controlled.

[0092] The present application provides a hydraulic brake device, in which a pressure valve assembly 3 is arranged on any side of a body 1 in a forward direction Y of the vehicle.

[0093] In the embodiment of the present application, the hydraulic brake device is arranged on the vehicle handle and is also connected to the pull rod assembly on the handle. The brake pull rod 4 of the pull rod assembly is used to push the piston 2 to move when the driver performs the brake operation. Figure 1 The hydraulic brake device and the handle can be arranged side by side perpendicular to the vehicle's forward direction Y, so that the brake rod 4 can push the piston 2 to move.

[0094] In order to save space and reduce the space occupied by the hydraulic brake device on the handle, the pressure valve assembly 3 can be set on any side of the body 1 in the vehicle forward direction Y. It can also be understood that the pressure valve assembly 3 is set on the side of the body 1 facing the driver or the side away from the driver, so that it does not occupy too much handle space perpendicular to the vehicle forward direction Y, and the structure of the hydraulic brake device and the handle can be made more compact. Such a structure can also make the pressure valve assembly 3 avoid in the direction of movement of the brake rod 4. When the driver applies pressure to the brake rod 4, the contact between the brake rod 4 and the pressure valve assembly 3 is reduced, thereby reducing the impact of the brake rod 4 on the pressure valve assembly 3 when it moves under the action of pressure.

[0095] The hydraulic brake device provided in the embodiment of the present application can reduce the space occupied by the pressure valve assembly 3 on the handlebar by arranging the pressure valve assembly 3 on any side of the main body 1 in the vehicle's forward direction Y, making the handlebar structure more compact and smaller in size.

[0096] The present application provides a hydraulic brake device, in which a storage chamber 14 is connected to a piston chamber 11 through a first channel of a body 1 , and when a piston 2 moves relative to the piston chamber 11 to provide pressure to the brake fluid, an outlet of the first channel connected to the piston chamber 11 is closed.

[0097] In the embodiment of the present application, the outlet of the first channel connected to the piston cavity 11 is closed, which may be that when the piston 2 moves relative to the piston cavity 11 to provide pressure to the brake fluid, the piston 2 moves to a certain position to block the outlet of the first channel connected to the piston cavity 11 through the structure of the piston 2 itself. Alternatively, a switch may be provided at the outlet of the first channel connected to the piston cavity 11, and the switch is controlled by the movement of the piston 2. When the piston 2 moves relative to the piston cavity 11 to provide pressure to the brake fluid, the switch is closed.

[0098] In the hydraulic braking device provided in the embodiment of the present application, when the piston 2 is not moving, the brake fluid can flow from the storage chamber 14 into the piston chamber 11. When the piston 2 moves, pressure needs to be provided to the brake fluid. Closing the outlet of the storage chamber 14 to the piston chamber 11 can reduce the reflux of the brake fluid and improve the braking effect.

[0099] The present application provides a hydraulic braking device, and the hydraulic braking device further includes a control unit. The control unit is electrically connected to the pressure valve assembly 3, and the control unit is configured to control the movement of the pressure valve assembly 3 within the valve group cavity 13 to adjust the pressure within the valve group cavity 13.

[0100] In an embodiment of the present application, the control unit may include structures such as a processor, a controller input interface, and an output interface. The input interface may be connected to a wheel speed sensor and is configured to transmit the wheel speed information obtained by the wheel speed sensor to the processor of the control unit. The output interface connects the controller and the pressure valve assembly 3. The processor processes the wheel speed information to obtain information for controlling the pressure valve assembly 3 to adjust the pressure. The controller transmits the control information to the pressure valve assembly 3 through the output interface, and the pressure valve assembly 3 correspondingly executes to adjust the pressure.

[0101] The hydraulic braking device provided by the embodiment of the present application, through the electrical connection between the control unit and the pressure valve assembly 3, can accurately control the movement of the pressure valve assembly 3 within the valve group cavity 13, and automatically adjust the pressure within the valve group cavity 13, thereby improving the performance, stability, and automation of the braking system.

[0102] Figure 8 Shown is the working principle of the hydraulic braking device provided by the embodiment of the present application. At the same time, refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8, the working process of the hydraulic braking device provided by the embodiment of the present application is as follows: When the driver needs to brake during driving, a force is applied to the brake lever 4. The brake lever 4 pushes the piston 2 of the hydraulic braking device to move into the piston cavity 11. The pressure in the piston cavity 11 decreases, and then the brake fluid in the piston cavity 11 is compressed. The brake fluid transmits the braking force for braking to the brake 5, and the brake 5 performs the braking action. When the wheel speed sensor detects the rotational speed information of the wheel during braking and transmits it to the control unit, when the control unit detects that the wheel is in or about to be in the locked state, the control unit controls the pressure reducing valve 31 in the pressure valve assembly 3 to work, reducing the pressure in the first cavity 131. Since the first cavity 131 is connected to the piston cavity 11 and / or the connection port 12, the pressure in the piston cavity 11 and / or the connection port 12 decreases. Furthermore, the pressure of the brake fluid in the piston cavity 11 and / or the connection port 12 decreases, and the braking force of the brake 5 decreases, and the wheel temporarily resumes rotation, alleviating the phenomenon of wheel locking. After the wheel resumes rotation, the control unit will control the pressure reducing valve 31 in the pressure valve assembly 3 to stop working, and the pressure increasing valve 32 works, increasing the pressure in the second cavity 132, thereby increasing the braking force of the brake 5 and enabling the brake 5 to perform the braking action. In order to reduce the dangerous situations generated when the vehicle is in the locked state, the above process of the hydraulic braking device working will be continuously repeated during the braking stage until the vehicle stops completely.

[0103] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A hydraulic braking device for connection to a brake, characterized in that, Comprising: A body, which is arranged on a vehicle; the body includes a piston cavity and a connection port, and the piston cavity is communicated with the brake through the connection port; A piston, which is hermetically arranged in the piston cavity, the piston cavity can be used to accommodate brake fluid, and the piston can move relative to the piston cavity to change the volume of the piston cavity; A pressure valve assembly, the body further includes a valve group cavity, and at least a part of the pressure valve assembly is arranged in the valve group cavity; the valve group cavity is communicated with the piston cavity, and / or the valve group cavity is communicated with the connection port; the pressure valve assembly is used to adjust the pressure in the valve group cavity.

2. The hydraulic braking device according to claim 1, characterized in that, The body further includes a storage cavity, the storage cavity is respectively communicated with the valve group cavity and the piston cavity, and the storage cavity can be used to store the brake fluid.

3. The hydraulic braking device according to claim 2, characterized in that The valve group cavity includes a first cavity, the pressure valve assembly includes a pressure reducing valve, and the pressure reducing valve is arranged in the first cavity; the first cavity is communicated with the piston cavity, and / or the first cavity is communicated with the connection port; the pressure reducing valve is used to reduce the pressure in the first cavity.

4. The hydraulic braking device according to claim 3, characterized in that, The liquid inlet of the first cavity is communicated with the piston cavity, and / or the liquid inlet of the first cavity is communicated with the connection port; the liquid outlet of the first cavity is communicated with the storage cavity; The pressure reducing valve can move relative to the first cavity so that the first cavity and the piston cavity are in a communicating state or a blocking state; and / or the pressure reducing valve can move relative to the first cavity so that the first cavity and the connection port are in a communicating state or a blocking state.

5. The hydraulic braking device according to claim 3, characterized in that, The pressure reducing valve can move out of the first cavity to reduce the space occupied by the pressure reducing valve in the first cavity.

6. The hydraulic braking device according to claim 3, characterized in that, The valve group cavity further includes a second cavity, the pressure valve assembly further includes a pressure increasing valve, and the pressure increasing valve is arranged in the second cavity; the second cavity is communicated with the piston cavity, and / or the second cavity is communicated with the connection port; the pressure increasing valve can move into the second cavity to increase the space occupied by the pressure increasing valve in the second cavity.

7. The hydraulic braking device according to claim 6, characterized in that, Both the pressure increasing valve and the pressure reducing valve are hermetically connected to the body.

8. The hydraulic braking device according to claim 6, characterized in that, The pressure increasing valve and the pressure reducing valve are electromagnetic valves.

9. The hydraulic braking device according to any one of claims 1 to 8, characterized in that, The pressure valve assembly is arranged on any side of the body in the vehicle forward direction.

10. The hydraulic braking device according to any one of claims 3 to 8, characterized in that, The storage cavity is communicated with the piston cavity through a first channel of the body. When the piston moves relative to the piston cavity to provide pressure to the brake fluid, the outlet of the first channel communicating with the piston cavity is closed.

11. The hydraulic braking device according to any one of claims 1 to 8, characterized in that, It further includes a control unit, the control unit is electrically connected to the pressure valve assembly, and the control unit is used to control the movement of the pressure valve assembly in the valve group cavity to adjust the pressure in the valve group cavity.

12. A braking device, characterized in that, Comprising: A brake; The hydraulic braking device according to any one of claims 1 to 11, and the hydraulic braking device is communicated with the brake through the connection port.

13. A vehicle, characterized in that, Comprising: A wheel speed sensor, which is used to obtain the wheel speed of the vehicle; The braking device according to claim 12; the wheel speed sensor is electrically connected to the control unit and is configured to transmit an instruction to the pressure valve assembly of the braking device according to the wheel speed.

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