Modular electro-hydraulic brake system

Abstract

The invention discloses a parking braking mechanism of an electronic mechanical braking system. The parking braking mechanism comprises a valve block (1), a flange plate (2), a speed reducing mechanism module (3), a hydraulic cylinder body module (4), a simulator cylinder body (5), an ECU controller (6), a driving motor module (7) and a liquid storage tank (8). According to the parking braking mechanism of the electronic mechanical braking system, modular design is adopted, the machining difficulty of a single assembly is greatly reduced, the process assemblability is optimized, the assembly flexibility of a production line is improved, and the assembly process is simpler and more reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobiles, in particular to a modular electronic hydraulic brake system. BACKGROUND

[0002] The traditional automobile vacuum booster is mainly composed of a vacuum pump and a mechanical transmission mechanism. Such vacuum pumps generally have the problems of response lag, large space occupation, and high maintenance cost, which also affect the smoothness and comfort of the braking process. The electronic hydraulic brake system uses a hydraulic pump to replace the traditional vacuum pump, and introduces an electronic control unit to collect brake signals in real time, issue control commands, and drive the hydraulic control unit to quickly establish brake pressure, reducing the system response time to within 150 milliseconds and significantly improving the braking comfort and handling performance of the vehicle. In the current domestic mass-produced vehicles, the electronic hydraulic brake system usually integrates the hydraulic pump, drive motor, and various solenoid valves into a compact hydraulic control unit, which provides the required hydraulic pressure for the brake system and achieves precise and efficient braking. The application of this system effectively alleviates the space occupation pressure of the traditional vacuum booster in the engine compartment, optimizes the flexibility of the vehicle layout, and reduces the maintenance cost. The electronic hydraulic brake system used by the competitor further realizes modular integration in structure design: the transmission mechanism, master cylinder assembly, and liquid tank assembly are integrated on a unified valve block as three relatively independent functional units, considering the simplicity of the system structure and the rationality of the functional distribution.

[0003] However, the electronic hydraulic brake system control unit valve block on the current market is highly integrated in structure design: it integrates the key structural features of the transmission mechanism, master cylinder assembly, and liquid tank assembly into a single valve block, and achieves reliable sealing through a sealing ring. Due to the integration of the three functional modules, the internal oil passage layout of the valve block tends to be complex, often involving precision processes such as inclined hole machining and steel ball riveting, forming complex internal structural features. The entire valve block assembly, as the core of the system, further integrates solenoid valves, drive motors, hydraulic pumps, and pressure sensors, etc. multiple key components, forming a functional complete and highly integrated electronic hydraulic brake system, causing problems such as high production cost. SUMMARY

[0004] In the summary section, a series of simplified concepts are introduced, which are simplifications of existing technology in the field, which will be further described in the detailed description section. The summary section of the present application does not mean to attempt to limit the key features and necessary technical features of the claimed technical solution, nor does it attempt to determine the protection scope of the claimed technical solution.

[0005] The technical problem to be solved by the present application is to provide a low-cost, simple and reliable modular electronic hydraulic brake system.

[0006] In order to solve the above technical problems, the modular electronic hydraulic braking system provided by the application comprises a valve block (1), a flange plate (2), a reduction mechanism module (3), a hydraulic cylinder body module (4), a simulator cylinder body (5), an ECU controller (6), a drive motor module (7), and a liquid storage tank (8),

[0007] The ECU controller (6) is connected to the left XZ plane of the valve block (1) through bolts, the flange plate (2) is located on the front side of the YZ plane of the valve block (1) and is connected to the reduction mechanism module (3) and the hydraulic cylinder body module (4) through bolts, the hydraulic cylinder body module (4) is connected to the right XZ plane of the valve block (1) through bolts, the simulator cylinder body (5) is connected to the right XZ plane of the valve block (1) through bolts, the simulator cylinder body (5) is below the hydraulic cylinder body module (4), the reduction mechanism module (3) is connected to the hydraulic cylinder body module (4) through bolts in the axial direction, the drive motor module (7) is located above the XY plane of the valve block (1), is connected to the reduction mechanism module (3) through bolts, and is connected to the protruding shell of the ECU controller (6), and the liquid storage tank (8) is located above the reduction mechanism module (3) and is connected thereto.

[0008] Preferably, the modular electronic hydraulic braking system is further improved, characterized in that the valve block (1) is used for integrating various valve bodies and pressure sensors, and the valve block (1) is connected to the hydraulic cylinder body module (4) and the simulator cylinder body (5) through hydraulic oil path interfaces and / or pipelines to realize brake fluid exchange.

[0009] Preferably, the modular electronic hydraulic braking system is further improved, characterized in that the drive motor module (7) is not directly connected to the valve block (1), and the longitudinal axis of the motor output shaft in the drive motor module (7) is arranged in parallel with the longitudinal axis of the simulator cylinder body (5).

[0010] Preferably, the modular electronic hydraulic braking system is further improved, characterized in that the drive motor module (7) is connected to the reduction mechanism module (3) through a worm mechanism at the output shaft end.

[0011] Preferably, the modular electronic hydraulic braking system is further improved, characterized in that the gear and the turbine longitudinal axis in the reduction mechanism module (3) are integrated, and the gear longitudinal axis in the reduction mechanism module (3) is arranged perpendicularly to the cylinder body longitudinal axis of the hydraulic cylinder body module (4).

[0012] Preferably, the modular electronic hydraulic braking system is further improved in characterised in that it further comprises: the speed reduction mechanism module (3) achieves speed reduction and torque increase through turbine and worm gear engagement and gear and rack engagement transmission, and converts the motor output torque into linear thrust to push the piston.

[0013] Preferably, the modular electronic hydraulic braking system is further improved in characterised in that it further comprises: the ECU controller (6) controls the motor output specified torque in the driving motor module (7) through instruction control, and after speed reduction and torque increase through the speed reduction mechanism module (3), achieves conversion of rotary motion into linear thrust, provides hydraulic assistance to push the wheel cylinder piston to press the brake pad against the brake disc, and achieves vehicle braking.

[0014] Preferably, the modular electronic hydraulic braking system is further improved in characterised in that it further comprises: the ECU controller (6) controls the opening and closing of the specified valve body door in the valve block (1), achieves exchange of brake fluid with the simulator cylinder (5), thereby simulating the set pedal force and achieving different pedal feeling requirements.

[0015] Preferably, the modular electronic hydraulic braking system is further improved in characterised in that it further comprises: the hydraulic cylinder module (4) includes brake pressure building by two independent hydraulic chambers in the unassisted state, and brake pressure building by independent hydraulic chambers in the assisted state.

[0016] The modular electronic hydraulic braking system of the application is designed in a modular manner, and the integrated valve block is split into a valve block body, a worm gear speed reduction mechanism, and a PSU&TMC (brake pressure supply unit & master cylinder) cylinder, thereby reducing the machining difficulty of parts, optimizing the process assembly, and having the following two specific benefits:

[0017] 1) The valve block of the hydraulic braking unit is only used as a carrier for internal oil transfer, and only needs to be machined for electromagnetic valves, check valves, pressure sensors, oil port interfaces, and simulator hole structures, and other features are transferred to the transmission mechanism, the master cylinder assembly, and the liquid tank assembly, thereby greatly reducing the machining difficulty of individual components and reducing costs.

[0018] 2) In a modular form, the assembly flexibility of the production line is greatly improved, and the assembly process is simpler and more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the invention, supplementing the description in the specification. However, the drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by exemplary embodiments of the invention. The invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a schematic diagram of the modular electro-hydraulic braking system of the present invention. Figure One .

[0021] Figure 2 This is a schematic diagram of the modular electro-hydraulic braking system of the present invention. Figure Two .

[0022] Explanation of reference numerals in the attached figures:

[0023] Valve block 1;

[0024] Flange 2;

[0025] Speed ​​reduction mechanism module 3;

[0026] Hydraulic cylinder module 4;

[0027] Simulator cylinder 5;

[0028] ECU controller 6;

[0029] Drive motor module 7;

[0030] Storage tank 8. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and various details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the technical solutions of these exemplary embodiments are fully conveyed to those skilled in the art. It should be understood that when an element is referred to as "connected" or "combined" to another element, the element can be directly connected or combined to the other element, or there may be intermediate elements. The difference is that when an element is referred to as "directly connected" or "directly combined" to another element, there are no intermediate elements. Throughout the drawings, the same reference numerals always denote the same elements. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Other terms used to describe the relationship between elements or layers should be interpreted in the same way (e.g., “between” and “directly between”, “adjacent to” and “directly adjacent to”, “on” and “directly on”, etc.).

[0032] Example;

[0033] This invention provides a modular electro-hydraulic braking system, comprising: a valve block (1), a flange (2), a reduction mechanism module (3), a hydraulic cylinder module (4), a simulator cylinder (5), an ECU controller (6), a drive motor module (7), and a reservoir (8).

[0034] The ECU controller (6) is connected to the left XZ plane of the valve block (1) by bolts. The flange (2) is located in front of the YZ plane of the valve block (1) and is connected to the deceleration mechanism module (3) and the hydraulic cylinder module (4) by bolts. The hydraulic cylinder module (4) is connected to the right XZ plane of the valve block (1) by bolts. The simulator cylinder (5) is connected to the right XZ plane of the valve block (1) by bolts. The simulator cylinder (5) is below the hydraulic cylinder module (4). The deceleration mechanism module (3) is axially connected to the hydraulic cylinder module (4) by bolts. The drive motor module (7) is located above the XY plane of the valve block (1), is connected to the deceleration mechanism module (3) by bolts, and is connected to the protruding housing of the ECU controller (6). The liquid storage tank (8) is located above the deceleration mechanism module (3) and is connected to it.

[0035] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that it further includes: the valve block (1) is used to integrate various valve bodies and pressure sensors, and to exchange brake fluid with the hydraulic cylinder module (4) and the simulator cylinder (5) through the hydraulic oil circuit interface and / or pipeline.

[0036] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that: the drive motor module (7) is not directly connected to the valve block (1), and the longitudinal axis of the motor output shaft in the drive motor module (7) is set in parallel with the longitudinal axis of the simulator cylinder (5).

[0037] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that it further includes: the drive motor module (7) is connected to the reduction mechanism module (3) through a worm gear mechanism at the output shaft end.

[0038] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that: the gear and the turbine longitudinal axis overlap and form an integrated structure in the deceleration mechanism module (3), and the longitudinal axis of the gear in the deceleration mechanism module (3) is set perpendicular to the longitudinal axis of the cylinder in the hydraulic cylinder module (4).

[0039] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that it further includes: the deceleration mechanism module (3) achieves deceleration and torque increase through the meshing of a worm gear and a gear and rack, and converts the motor output torque into a linear thrust that pushes the piston.

[0040] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that it further includes: the ECU controller (6) controls the motor in the drive motor module (7) to output a specified torque through the command, and after the speed reduction mechanism module (3) reduces the speed and increases the torque, the rotational motion is converted into linear thrust, providing hydraulic assistance to push the wheel cylinder piston to make the brake pads press against the brake disc, thereby realizing vehicle braking.

[0041] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that it further includes: the ECU controller (6) controls the opening and closing of the specified valve body door in the valve block (1) to realize the exchange of brake fluid with the simulator cylinder (5), thereby simulating the set pedal force and realizing different pedal feel requirements.

[0042] Preferably, the modular electro-hydraulic braking system is further improved, characterized in that it further includes: the hydraulic cylinder module (4) includes pressure-building braking by two independent hydraulic chambers in the unassisted state, and pressure-building braking by the hydraulic chambers independently in the assisted state.

[0043] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.

[0044] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A modular electro-hydraulic brake system, characterized in that, It comprises: Valve block (1), flange plate (2), reduction mechanism module (3), hydraulic cylinder module (4), simulator cylinder (5), ECU controller (6), drive motor module (7), liquid storage tank (8), The ECU controller (6) is connected to the left side XZ plane of the valve block (1) by bolts, the flange plate (2) is located on the front side of the YZ plane of the valve block (1) and is connected to the reduction mechanism module (3) and the hydraulic cylinder module (4) by bolts, the hydraulic cylinder module (4) is connected to the right side XZ plane of the valve block (1) by bolts, the simulator cylinder (5) is connected to the right side XZ plane of the valve block (1) by bolts, the simulator cylinder (5) is below the hydraulic cylinder module (4), the reduction mechanism module (3) is connected to the hydraulic cylinder module (4) by bolts in the axial direction, the drive motor module (7) is located above the XY plane of the valve block (1), connected to the reduction mechanism module (3) by bolts, and connected to the protruding shell of the ECU controller (6), the liquid storage tank (8) is located above the reduction mechanism module (3) and connected thereto.

2. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The valve block (1) is used to integrate various valve bodies and pressure sensors, and to exchange brake fluid with the hydraulic cylinder module (4) and the simulator cylinder (5) through hydraulic oil path interface and / or pipeline.

3. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The drive motor module (7) is not directly connected to the valve block (1), and the longitudinal axis of the motor output shaft in the drive motor module (7) is parallel to the longitudinal axis of the simulator cylinder (5).

4. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The drive motor module (7) is connected to the reduction mechanism module (3) by the worm mechanism at the output shaft end.

5. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The gear and turbine longitudinal axis in the reduction mechanism module (3) are integrated, and the gear longitudinal axis in the reduction mechanism module (3) is perpendicular to the cylinder longitudinal axis of the hydraulic cylinder module (4).

6. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The reduction mechanism module (3) achieves speed reduction and torque increase by worm and gear meshing and gear and rack meshing transmission, and converts the motor output torque into linear thrust to push the piston.

7. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The ECU controller (6) controls the motor output torque in the drive motor module (7) by command, reduces the speed and increases the torque after the reduction mechanism module (3), realizes the conversion of rotary motion to linear thrust, provides hydraulic assistance to push the wheel cylinder piston to make the brake pad press the brake disc, and realizes vehicle braking.

8. The modular electro-hydraulic brake system of claim 1, wherein, It also includes: The ECU controller (6) controls the opening and closing of the specified valve body door in the valve block (1), realizes the exchange of brake fluid with the simulator cylinder (5), simulates the set pedal force, and realizes different pedal feeling requirements.

9. The modular electro-hydraulic brake system of claim 1, wherein: The hydraulic cylinder module (4) includes two independent hydraulic chambers for building pressure braking in the unassisted state, and the hydraulic chamber independently completes the building pressure braking in the assisted state.

10. An electro-hydraulic brake system characterized by, It comprises the modular electronic hydraulic braking system according to any one of claims 1 to 9.

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