CN114932890B

CN114932890B - Miniaturized single-channel ABS hydraulic control module and brake anti-lock braking system

Info

Publication number: CN114932890B
Application number: CN202210564022.5A
Authority: CN
Inventors: 吴柳杰; 张海岩; 单东升; 陈赞; 张军晓
Original assignee: Ningbo Saifu Automobile Brake Co ltd
Current assignee: Ningbo Saifu Automobile Brake Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2023-07-14
Anticipated expiration: 2042-05-23
Also published as: CN114932890A

Abstract

The application provides a miniaturized single-channel ABS hydraulic control module and a braking anti-lock braking system, and relates to the technical field of braking devices. The module comprises a main valve block, wherein the main valve block comprises a master pump oil port, a wheel cylinder oil port, a first accommodating cavity and a second accommodating cavity, the master pump oil port is communicated with the first accommodating cavity, the first accommodating cavity is communicated with the wheel cylinder oil port, the wheel cylinder oil port is communicated with the second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are coaxially distributed. And the pressure-increasing switch valve is used for controlling the on-off of the first accommodating cavity and the oil port of the wheel cylinder. The energy accumulator is connected with the main valve block and is communicated with the second accommodating cavity. The pressure reducing switch valve is used for controlling the on-off of the oil port of the wheel cylinder and the accumulator; and a check valve through which the brake fluid in the second receiving chamber can flow into the first receiving chamber. The module can be installed and used in a narrower space, and the anti-lock braking system applying the module can be put into use in more vehicle types, is wider in application and meets the safety requirement.

Description

Miniaturized single-channel ABS hydraulic control module and brake anti-lock braking system

Technical Field

The application relates to the technical field of braking devices, in particular to a miniaturized single-channel ABS hydraulic control module and a braking anti-lock system.

Background

The anti-lock braking system is called ABS for short. The function is to automatically control the braking force of the brake when the vehicle brakes, so that the wheels are not locked and are in a rolling and sliding state (the sliding rate is about 20 percent), and the adhesion force between the wheels and the ground is ensured to be at the maximum value. The development of ABS systems dates back to the beginning of the 20 th century. The later stage of 70 years of 20 th century, digital electronic technology and large-scale integrated circuits are rapidly developed, a technical foundation is laid for the practical development of ABS systems, and various ABS systems are developed by a plurality of companies successively. Since the mid 80 s of the 20 th century, ABS systems have evolved toward cost performance. As the structure of vehicles becomes more compact, miniaturization and weight reduction of ABS have also become a necessary trend.

The single-channel ABS has the advantages of simple structure, small and exquisite appearance, low cost and the like, is widely applied to light trucks, motorcycles, electric bicycles and electric power-assisted bicycles, can obviously shorten the braking distance of the vehicle on most road surfaces, improves the directional stability during braking, and ensures the running safety of the vehicle.

From structural analysis, the ABS can be roughly split into a signal acquisition component, an electronic control unit and a hydraulic control module. The signal acquisition component comprises a wheel speed sensor, a pressure sensor and the like and is used for collecting information such as the wheel speed of a vehicle and the pressure of a hydraulic system; the electronic control unit processes the acquired signals and controls the hydraulic control module according to the processed results; the hydraulic control module is an actuating mechanism of the system, the hydraulic system in the hydraulic control module is an precondition of ABS operation, and the working pressure of a vehicle brake cylinder can be regulated under the control of the electronic control unit, so that the holding force of the brake caliper on the disc brake sheet is regulated. The design of the hydraulic control module is an important part of the development work for ABS.

The existing ABS still do not match well for some narrow vehicle spaces, with limitations of application.

Disclosure of Invention

The purpose of this application is to provide a miniaturized single channel ABS hydraulic control module, it can be through structural arrangement, improves some existing ABS and still is not suitable for some narrow vehicle space's problem.

It is another object of the present application to provide a brake anti-lock system including the above miniaturized single-channel ABS hydraulic control module having all the characteristics of the miniaturized single-channel ABS hydraulic control module.

Embodiments of the present application are implemented as follows:

embodiments of the present application provide a miniaturized single channel ABS hydraulic control module comprising:

the main valve block comprises a main pump oil port, a wheel cylinder oil port, a first accommodating cavity and a second accommodating cavity, wherein the main pump oil port is communicated with the first accommodating cavity, the first accommodating cavity is communicated with the wheel cylinder oil port, the wheel cylinder oil port is communicated with the second accommodating cavity, and the first accommodating cavity and the second accommodating cavity are coaxially distributed along the length direction of the main valve block;

the pressure-increasing switch valve is arranged in the first accommodating cavity and can control the on-off of the first accommodating cavity and the wheel cylinder oil port;

the energy accumulator is connected with the main valve block and communicated with the second accommodating cavity;

the pressure reducing switch valve is arranged in the second accommodating cavity and can control the on-off of the wheel cylinder oil port and the energy accumulator; and

the check valve is arranged between the first accommodating cavity and the second accommodating cavity, and brake fluid in the second accommodating cavity can flow into the first accommodating cavity through the check valve.

In addition, the miniaturized single-channel ABS hydraulic control module provided by the embodiment of the application can also have the following additional technical characteristics:

in an alternative embodiment of the present application, the miniaturized single-channel ABS hydraulic control module has a pressure maintaining state, a pressure reducing state and a pressure increasing state when the brake of the vehicle is depressed;

in the pressure maintaining state, the pressure reducing switch valve is closed, and the pressure increasing switch valve is closed so that the pressure of the wheel cylinder is a constant value;

in the pressure-reducing state, the pressure-increasing switching valve is closed, the pressure-reducing switching valve is cyclically opened and closed, and brake fluid in the wheel cylinder flows to the accumulator so that the pressure of the wheel cylinder is reduced to a first threshold value;

in the pressure increasing state, the pressure reducing switch valve is closed, the pressure increasing switch valve is cyclically opened and closed, and brake fluid flows into the wheel cylinder from the master pump oil port, so that the pressure of the wheel cylinder is increased to a second threshold value;

when the brake of the vehicle is released, the brake fluid in the energy accumulator flows into the second accommodating cavity, flows into the first accommodating cavity through the one-way valve, and flows back to the master pump through the master pump oil port.

In an alternative embodiment of the present application, the main valve block includes a first flow passage, a second flow passage, and a third flow passage extending in a length direction, and a fourth flow passage, a fifth flow passage, a sixth flow passage, and a seventh flow passage extending perpendicular to the length direction;

the total pump oil port is communicated with the first accommodating cavity through the first runner and the fourth runner which are sequentially connected, the first accommodating cavity is communicated with the wheel cylinder oil port through the fifth runner and the second runner which are sequentially connected, a part, far away from the wheel cylinder oil port, of the second runner is communicated with the second accommodating cavity through the sixth runner, and the second accommodating cavity is communicated with the energy accumulator through the seventh runner and the third runner which are sequentially connected.

In an alternative embodiment of the present application, the openings of the fourth flow channel, the fifth flow channel, the sixth flow channel and the seventh flow channel are sealed by a seal.

In an alternative embodiment of the present application, the seal is a steel sealing ball or a sealing plate.

In an alternative embodiment of the present application, the sealing plate includes a plate body, a sealing ring, and a sealing protrusion, the main valve block is provided with a mounting groove, the sealing ring is distributed along the edge of the plate body, the sealing protrusion is connected to the plate body and is located on the same side of the plate body with the sealing ring, the plate body is fixed in the mounting groove, and openings of the fourth runner, the fifth runner, the sixth runner and the seventh runner are respectively blocked by one sealing protrusion.

In an alternative embodiment of the present application, the miniaturized single-channel ABS hydraulic control module further includes an electrical connection assembly including a first coil, a second coil, a first coil pad, a second coil pad, a first coil patch cord, a second coil patch cord;

the first coil gasket is sleeved on the pressurizing switch valve and positioned in the first accommodating cavity, the first coil gasket is propped against one end of the first coil, which is far away from the second accommodating cavity, and the first coil patch cord is electrically connected with the first coil and used for electrically connecting the first coil with the outside;

the second coil is sleeved on the pressure reducing switch valve and is positioned in the second accommodating cavity, the second coil gasket is propped against one end, far away from the first accommodating cavity, of the second coil, the second coil patch cord is electrically connected with the second coil and is used for electrically connecting the second coil with the outside, and the energy accumulator is propped against one side, far away from the first accommodating cavity, of the second coil gasket.

In an alternative embodiment of the present application, the accumulator comprises an accumulator valve body, and an accumulator piston, an O-ring, an accumulator spring and an accumulator cover which are arranged in an inner cavity of the accumulator valve body, wherein the inner cavity is communicated with the second accommodating cavity, the O-ring is sleeved on the accumulator piston, one end of the accumulator spring is connected with the accumulator cover, and the other end of the accumulator spring is propped against the accumulator piston.

In an alternative embodiment of the present application, the projection of the accumulator valve body in the length direction of the main valve block does not exceed the extent of the main valve block.

The embodiment of the application provides a braking anti-lock braking system, which comprises a signal acquisition component, an electronic control unit and a miniaturized single-channel ABS hydraulic control module according to any one of the above, wherein the signal acquisition component is used for acquiring information of the miniaturized single-channel ABS hydraulic control module and feeding back data to the electronic control unit, and the electronic control unit controls the miniaturized single-channel ABS hydraulic control module to work according to the data.

The beneficial effects of this application are:

the miniaturized single channel ABS hydraulic control module is through holding the first chamber that holds of main valve piece and the coaxial arrangement of chamber that holds of second for the valve port of pressure boost ooff valve and relief pressure ooff valve is relative and is sharp arranging, makes the shape of whole module be long and thin form, in addition, this kind of arrangement makes this application realize hydraulic control with more simple structure, holistic volume is reduced, whole module can realize installing in more narrow and small space and use, the anti-lock braking system who uses this miniaturized single channel ABS hydraulic control module also can put into use in more motorcycle types, it is more extensive to use, satisfy the safety demand.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a miniaturized single-channel ABS hydraulic control module provided in embodiment 1 of the present application;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of the flow path of the main valve block at one view angle;

FIG. 5 is a schematic view of FIG. 4 at another view angle;

FIG. 6 is a hydraulic schematic;

FIG. 7 is a schematic view of a main valve block of example 2;

fig. 8 is a schematic view of the sealing plate of fig. 7.

Icon: 100-miniaturization single-channel ABS hydraulic control module; 10-a main valve block; 11-a master pump oil port; 12-an oil port of the wheel cylinder; 13-a first accommodation chamber; 14-a second accommodation chamber; 101-a first flow channel; 102-a second flow channel; 103-a third flow channel; 104-a fourth flow channel; 105-fifth flow channel; 106-a sixth flow channel; 107-seventh flow channel; 20-a boost switching valve; 30-an accumulator; 31-accumulator valve body; 32-accumulator piston; 33-O-shaped ring; 34-accumulator spring; 35-an accumulator cover; 40-a pressure reducing switch valve; 50-a one-way valve; 61-a first coil; 62-a second coil; 63-a first coil gasket; 64-a second coil pad; 65-a first coil patch cord; 66-a second coil patch; 67-coil shielding cover; 71-sealing steel balls; 72-sealing plate; 721-plate body; 722-a seal ring; 723-sealing projections; 74-mounting groove.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the product is conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1

Referring to fig. 1 to 6, embodiments of the present application provide a miniaturized single-channel ABS hydraulic control module 100, including:

the main valve block 10, the main valve block 10 comprises a main pump oil port 11, a wheel cylinder oil port 12, a first accommodating cavity 13 and a second accommodating cavity 14, the main pump oil port 11 is communicated with the first accommodating cavity 13, the first accommodating cavity 13 is communicated with the wheel cylinder oil port 12, the wheel cylinder oil port 12 is communicated with the second accommodating cavity 14, and the first accommodating cavity 13 and the second accommodating cavity 14 are coaxially distributed along the length direction of the main valve block 10;

the pressure-increasing switch valve 20 is arranged in the first accommodating cavity 13, and the pressure-increasing switch valve 20 can control the on-off of the first accommodating cavity 13 and the wheel cylinder oil port 12;

the energy accumulator 30, the energy accumulator 30 is connected with the main valve block 10, the energy accumulator 30 is communicated with the second accommodating cavity 14;

the pressure-reducing switch valve 40, the pressure-reducing switch valve 40 is set up in the second accommodation cavity 14 and can control the on-off of the wheel cylinder oil port 12 and the accumulator 30; and

the check valve 50, the check valve 50 is disposed between the first receiving chamber 13 and the second receiving chamber 14, and the brake fluid in the second receiving chamber 14 can flow into the first receiving chamber 13 through the check valve 50.

Referring to fig. 4 and 5, the main valve block 10 includes a first flow passage 101, a second flow passage 102, and a third flow passage 103 extending in a longitudinal direction, and a fourth flow passage 104, a fifth flow passage 105, a sixth flow passage 106, and a seventh flow passage 107 extending perpendicular to the longitudinal direction;

the master pump oil port 11 is communicated with the first accommodating cavity 13 through a first flow passage 101 and a fourth flow passage 104 which are sequentially connected, the first accommodating cavity 13 is communicated with the wheel cylinder oil port 12 through a fifth flow passage 105 and a second flow passage 102 which are sequentially connected, a part, far away from the wheel cylinder oil port 12, of the second flow passage 102 is communicated with the second accommodating cavity 14 through a sixth flow passage 106, and the second accommodating cavity 14 is communicated with the energy accumulator 30 through a seventh flow passage 107 and a third flow passage 103 which are sequentially connected.

Referring to fig. 6, the pressure-increasing switch valve 20 is normally open, and when the vehicle has no locking trend, the brake master cylinder is ensured to be directly communicated with the wheel cylinder, so as to meet the basic braking requirement of the vehicle. The pressure reducing switch valve 40 is normally closed, and the accumulator 30 is connected to the outlet of the pressure reducing switch valve 40 (i.e., is connected to the outlet of the pressure reducing switch valve 40 via the third flow passage 103 and the seventh flow passage 107). The non-return valve 50 then permits a one-way flow of brake fluid from the reservoir 30 into the first receiving chamber 13 only, and not from the pressure-reducing switching valve 40 into the sixth flow passage 106 and the second flow passage 102.

When the brakes of the vehicle are depressed, the miniaturized single-channel ABS hydraulic control module 100 has a pressure-maintaining state, a pressure-reducing state, and a pressure-increasing state;

in the pressure maintaining state, the pressure-reducing switching valve 40 is closed, and the pressure-increasing switching valve 20 is closed so that the pressure of the wheel cylinder is a constant value;

in the reduced pressure state, the pressure-increasing switching valve 20 is closed, the pressure-decreasing switching valve 40 is cyclically opened and closed, and the brake fluid in the wheel cylinder flows to the accumulator 30 so that the pressure of the wheel cylinder is reduced to the first threshold value;

in the pressure-increasing state, the pressure-decreasing switching valve 40 is closed, the pressure-increasing switching valve 20 is cyclically opened and closed, and the brake fluid flows into the wheel cylinders from the master cylinder port 11 so that the pressure of the wheel cylinders increases to the second threshold value;

when the braking of the vehicle is released, the brake fluid in the accumulator 30 flows into the second receiving chamber 14 and into the first receiving chamber 13 through the check valve 50, and then flows back to the master cylinder through the master cylinder port 11.

The openings of the fourth flow channel 104, the fifth flow channel 105, the sixth flow channel 106 and the seventh flow channel 107 are process holes, and the process holes are sealed by a sealing member. In this embodiment, the seal is a sealing steel ball 71.

Specifically, the miniaturized single-channel ABS hydraulic control module 100 of the present embodiment further includes an electrical connection assembly including a first coil 61, a second coil 62, a first coil pad 63, a second coil pad 64, a first coil patch cord 65, and a second coil patch cord 66;

the first coil 61 is sleeved on the boost switch valve 20 and is positioned in the first accommodating cavity 13, the first coil gasket 63 is propped against one end of the first coil 61 far away from the second accommodating cavity 14, the other end of the first coil gasket 63 is limited and fixed through the coil blocking cover 67, and the first coil patch cord 65 is electrically connected with the first coil 61 and is used for electrically connecting the first coil 61 with the outside;

the second coil 62 is sleeved on the pressure reducing switch valve 40 and is located in the second accommodating cavity 14, the second coil gasket 64 abuts against one end, far away from the first accommodating cavity 13, of the second coil 62, the second coil patch 66 is electrically connected with the second coil 62 and used for electrically connecting the second coil 62 with the outside, and the energy accumulator 30 abuts against one side, far away from the first accommodating cavity 13, of the second coil gasket 64.

The accumulator 30 comprises an accumulator valve body 31, an accumulator piston 32 arranged in an inner cavity of the accumulator valve body 31, an O-shaped ring 33, an accumulator spring 34 and an accumulator blocking cover 35, wherein the inner cavity is communicated with the second accommodating cavity 14, the O-shaped ring 33 is sleeved on the accumulator piston 32, one end of the accumulator spring 34 is connected with the accumulator blocking cover 35, and the other end of the accumulator spring 34 is propped against the accumulator piston 32.

Wherein the projection of the accumulator valve body 31 in the length direction of the main valve block 10 does not exceed the range of the main valve block 10.

The valve ports of the pressure increasing switch valve 20 and the pressure reducing switch valve 40 are oppositely arranged and are arranged in a linear mode innovatively, so that the structure of the whole module is slender, the function of rapidly and accurately controlling braking force can be realized only by two high-speed switch valves and one-way valve 50 and one accumulator 30, the whole module is miniaturized, narrow vehicle inner spaces such as an electric bicycle frame and a front fork can be flexibly arranged, the size of the accumulator 30 is in the width range of the main valve block 10, the miniaturization and the slender structure are further guaranteed, and the installation and arrangement are not influenced because the accumulator 30 has expenditure in the width direction of the main valve block 10.

Based on the miniaturized single-channel ABS hydraulic control module 100, the embodiment of the application provides a braking anti-lock braking system, which comprises a signal acquisition component, an electronic control unit and the miniaturized single-channel ABS hydraulic control module 100, wherein the signal acquisition component is used for acquiring information of the miniaturized single-channel ABS hydraulic control module 100 and feeding back data to the electronic control unit, and the electronic control unit controls the miniaturized single-channel ABS hydraulic control module 100 to work according to the data. The signal acquisition component and the electronic control unit may refer to corresponding components and units in the prior art, and are not described herein.

The principle of this embodiment is:

the main valve block 10 is designed in an elongated structure, and the assembly is pressed into the main valve block 10 from both end surfaces in the longitudinal direction. The pressure increasing switch valve 20 and the pressure reducing switch valve 40 are arranged on a straight line in a mode that valve ports are opposite, an outlet of the pressure reducing switch valve 40 is connected with an inlet of the pressure increasing switch valve 20 through a one-way valve 50, and the straight line arrangement mode of the pressure increasing switch valve is a basis for realizing the slender integral structure. The flow passage is opened at the side of the main valve block 10, and the outlet of the pressure increasing switching valve 20, the inlet of the pressure reducing switching valve 40 and the wheel cylinder oil port 12 are connected on the premise of occupying a small volume. The accumulator 30 is arranged in the length direction, is pressed into the main valve block 10 after being assembled, is in interference fit with the main valve block 10, and is provided with a flow passage so as to be directly communicated with the outlet of the pressure reducing switch valve 40. The coil blocking cover 67 and the accumulator valve body 31 are respectively in interference fit with the main valve block 10, and press two coils and a coil gasket on the main valve block 10 to realize the positioning of the coils. The coil patch cord is connected with the coil and the electronic control unit of the ABS and transmits electric energy and electric signals.

Referring to fig. 6, the operation of the miniaturized single-channel ABS hydraulic control module 100 is as follows:

ABS operation can be divided into pressure maintaining, pressure increasing and pressure reducing states. When the pressure of the wheel cylinder H just can maintain the wheel slip rate at a desired value, the pressure-increasing switch valve 20 is powered on and rapidly closed, so that the pressure in the wheel cylinder is maintained at a constant value, and the pressure-maintaining state is entered; when the wheel cylinder pressure makes the wheel slip ratio higher than the desired value, that is, when the wheel cylinder pressure is excessively large, the pressure-increasing switching valve 20 is kept in a closed state, the pressure-decreasing switching valve 40 is rapidly opened and closed, so that the wheel cylinder pressure is reduced to the desired value (first threshold value) in a stepwise manner, which is a pressure-decreasing stage; when the wheel cylinder pressure makes the wheel slip ratio lower than the desired value, that is, when the wheel cylinder pressure is too small, the pressure-reducing switching valve 40 is kept in a closed state, the pressure-increasing switching valve 20 is rapidly opened and closed, so that the wheel cylinder pressure increases to the desired value in a stepwise manner (the second threshold may be identical to the first threshold or may be set separately according to the pressure demand), and this process is a pressure-increasing stage. The pressure-maintaining, pressure-increasing and pressure-reducing processes are performed in a rapid and orderly manner in the wheel cylinder cavity by rapidly opening and closing the pressure-increasing switch valve 20 and the pressure-reducing switch valve 40, so that the pressure in the wheel cylinder cavity is controlled, the wheels are always in a rolling and sliding state (the sliding rate is about 20%), and the wheels are prevented from locking. The brake fluid discharged by the pressure reducing switch valve 40 enters the accumulator 30, and when the brake is released, the pressure of the brake master cylinder S is lower than the pressure in the accumulator 30, and the brake fluid flows back to the brake master cylinder through the one-way valve 50, so that the brake fluid is circulated. The back pressure of the accumulator 30 is required to be slightly greater than the opening pressure of the check valve 50 so that smooth return of brake fluid to the master cylinder is ensured by the accumulator spring 34. The volume of the accumulator 30 is required to be larger than the volume of the brake master cylinder, so that wheel locking caused by too high wheel cylinder pressure due to the fact that the pressure-reducing switch valve 40 cannot discharge brake fluid after the accumulator 30 is filled is avoided. In addition, a single long-time trigger of ABS can cause all brake fluid in the brake master cylinder to enter the accumulator 30, so that the wheel cylinder pressure cannot be maintained, and at this time, the driver of the vehicle needs to quickly release the brake, so that the brake fluid in the accumulator 30 flows back to the brake master cylinder through the check valve 50, and then quickly presses down the brake to continuously trigger the ABS. The operation is simple and the hand is very easy to be put on, so that the device has enough practicability.

In this embodiment, by controlling the rapid opening and closing of the pressure-increasing switch valve 20 and the pressure-reducing switch valve 40, the pressure-maintaining, pressure-increasing and pressure-reducing processes are performed in a rapid and orderly manner in the wheel cylinder cavity, so that the pressure in the wheel cylinder cavity is controlled, the wheels are always in a rolling and sliding state (the slip rate is about 20%), and the locking of the wheels is prevented. And under the condition of realizing the function foundation, the whole miniaturized single-channel ABS hydraulic control module 100 is smaller in size and long and thin in structure, is convenient to arrange in some narrow spaces, and is mainly suitable for two-wheel light vehicles such as light motorcycles, electric bicycles and electric power assisted bicycles.

By applying the miniaturized single-channel ABS hydraulic control module 100, the brake anti-lock system can also exert an anti-lock function in more narrow application spaces.

Example 2

Referring to fig. 7 and 8, the difference between the present embodiment and the embodiment is that: the seal of this embodiment is a seal plate 72.

Specifically, the sealing plate 72 includes a plate body 721, a sealing ring 722, and a sealing protrusion 723, the main valve block 10 is provided with a mounting groove 74, the sealing ring 722 is distributed along the edge of the plate body 721, the sealing protrusion 723 is connected to the plate body 721 and is located on the same side of the plate body 721 as the sealing ring 722, the plate body 721 is fixed in the mounting groove 74, and openings of the fourth flow passage 104, the fifth flow passage 105, the sixth flow passage 106, and the seventh flow passage 107 are respectively blocked by one sealing protrusion 723.

Reference is made to embodiment 1 and to the prior art for the remaining structure and function.

By using the sealing plate 72, after the electric connection assembly and the accumulator 30 are installed, the sealing protrusion 723 can be aligned with the process hole on the main valve block 10, and pressed in, so that the sealing protrusion 723 is in interference fit with the hole wall of the process hole, and the plate body 721 can be fixed with the main valve block 10 by adopting bolts, so that the plate body 721 is embedded into the installation groove 74 and does not protrude out of the main valve block 10, thereby sealing a plurality of process holes at one time, improving the assembly efficiency, and simultaneously not affecting the whole volume of the module. The sealing ring 722 can further improve the sealing performance, and prevent the invasion of external impurities.

To sum up, the miniaturized single-channel ABS hydraulic control module 100 of this application is through holding chamber 13 and the coaxial arrangement of second holding chamber 14 with the first holding chamber of main valve piece 10 for the valve port of pressure boost ooff valve 20 and pressure reduction ooff valve 40 is relative and is sharp arranging, makes the shape of whole module be long and thin form, in addition, this kind of arrangement makes this application realize hydraulic control with more retrenching structure, holistic volume is reduced, whole module can realize installing in more narrow and small space and use, the anti-lock braking system who uses this miniaturized single-channel ABS hydraulic control module 100 also can put into use in more motorcycle types, it is wider to use, satisfy the safety requirement.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A miniaturized single-channel ABS hydraulic control module comprising:

the check valve is arranged between the first accommodating cavity and the second accommodating cavity, and brake fluid in the second accommodating cavity can flow into the first accommodating cavity through the check valve;

when the brake of the vehicle is pressed down, the miniaturized single-channel ABS hydraulic control module is provided with a pressure maintaining state, a pressure reducing state and a pressure increasing state;

when the brake of the vehicle is released, the brake fluid in the energy accumulator flows into the second accommodating cavity, flows into the first accommodating cavity through the one-way valve, and flows back to the master pump through the master pump oil port; the main valve block comprises a first flow passage, a second flow passage and a third flow passage which extend in the length direction, and a fourth flow passage, a fifth flow passage, a sixth flow passage and a seventh flow passage which extend in the direction perpendicular to the length direction;

2. The miniaturized single-channel ABS hydraulic control module of claim 1 wherein the openings of the fourth, fifth, sixth and seventh channels are sealed by seals.

3. The miniaturized single channel ABS hydraulic control module of claim 2 wherein the seal is a sealing steel ball or a sealing plate.

4. The miniaturized single-channel ABS hydraulic control module according to claim 3, wherein the sealing plate comprises a plate body, a sealing ring and sealing protrusions, the main valve block is provided with a mounting groove, the sealing ring is distributed along the edge of the plate body, the sealing protrusions are connected to the plate body and located on the same side of the plate body as the sealing ring, the plate body is fixed in the mounting groove, and the openings of the fourth flow channel, the fifth flow channel, the sixth flow channel and the seventh flow channel are respectively plugged by one sealing protrusion.

5. The miniaturized single-channel ABS hydraulic control module of claim 1 further comprising an electrical connection assembly comprising a first coil, a second coil, a first coil shim, a second coil shim, a first coil patch, a second coil patch;

6. The miniaturized single-channel ABS hydraulic control module according to claim 1, wherein the accumulator comprises an accumulator valve body, and an accumulator piston, an O-ring, an accumulator spring and an accumulator cover disposed in an inner chamber of the accumulator valve body, wherein the inner chamber is in communication with the second receiving chamber, the O-ring is sleeved on the accumulator piston, one end of the accumulator spring is connected to the accumulator cover, and the other end of the accumulator spring is in abutment with the accumulator piston.

7. The miniaturized single channel ABS hydraulic control module of claim 6 wherein the projection of the accumulator valve body in the length direction of the main valve block does not exceed the extent of the main valve block.

8. A brake anti-lock system, comprising a signal acquisition assembly, an electronic control unit and a miniaturized single-channel ABS hydraulic control module according to any one of claims 1-7, wherein the signal acquisition assembly is used for acquiring information of the miniaturized single-channel ABS hydraulic control module and feeding back data to the electronic control unit, and the electronic control unit controls the miniaturized single-channel ABS hydraulic control module to work according to the data.