CN114932890A

CN114932890A - Miniaturized single-channel ABS hydraulic control module and anti-lock braking system

Info

Publication number: CN114932890A
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: 2022-08-23
Anticipated expiration: 2042-05-23
Also published as: CN114932890B

Abstract

The application provides miniaturized single channel ABS hydraulic control module and braking anti-lock braking system relates to arresting gear technical field. This module includes the master valve block, and the master valve block includes that the master pump hydraulic fluid port, wheel cylinder hydraulic fluid port, the first chamber and the second that holds hold the chamber, and the master pump hydraulic fluid port with first hold the chamber intercommunication, first chamber and the wheel cylinder hydraulic fluid port intercommunication that holds, the wheel cylinder hydraulic fluid port holds the chamber intercommunication with the second, first chamber and the second that holds hold the coaxial distribution in chamber. 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 communicated with the second accommodating cavity. The pressure reducing switch valve is used for controlling the connection and disconnection of the oil port of the wheel cylinder and the energy accumulator; and a check valve through which the brake fluid in the second accommodation chamber can flow into the first accommodation chamber. The module can be installed and used in a narrow space, the anti-lock braking system applying the module can also be put into use in more vehicle types, the application is wider, and the safety requirement is met.

Description

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

And the brake anti-lock system is called ABS for short. The function is that when the vehicle brakes, the braking force of the brake is automatically controlled, so that the wheels are not locked and are in a state of rolling and sliding (the sliding rate is about 20 percent) to ensure that the adhesive force between the wheels and the ground is at the maximum. The development of ABS systems dates back to the beginning of the 20 th century. In the late 20 th century 70 s, digital electronic technology and large-scale integrated circuit are rapidly developed, which lays a technical foundation for practical development of ABS systems, and many companies have developed ABS systems in diverse forms. Since the middle of the 80's of the 20 th century, ABS systems have been developed in a cost effective manner. As the structure of the vehicle is becoming more compact, the reduction in size and weight of the ABS is also becoming an inevitable 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 direction stability during braking, and ensures the running safety of the vehicle.

Structurally, the ABS can be roughly divided into a signal acquisition assembly, an electronic control unit and a hydraulic control module. The signal acquisition assembly 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 result; the hydraulic control module is an actuating mechanism of the system, the hydraulic system in the hydraulic control module is the premise of ABS work, and the working pressure of a vehicle brake wheel cylinder can be adjusted under the control of the electronic control unit, so that the holding force of the brake caliper on the disc brake pad is adjusted. For ABS, the design of the hydraulic control module is an important part of its development work.

The existing ABS still cannot be well matched for some narrow vehicle spaces, and has application limitation.

Disclosure of Invention

The application aims to provide a miniaturized single-channel ABS hydraulic control module which can improve the problem that some conventional ABS are still not suitable for narrow vehicle spaces through structural arrangement.

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

The embodiment of the application is realized as follows:

the embodiment of the application provides a miniaturized single channel ABS hydraulic control module, includes:

the main valve block comprises a main pump oil port, a wheel cylinder oil port, a first accommodating cavity and a second accommodating cavity, 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 connection and disconnection 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 connection and disconnection of the oil port of the wheel cylinder and the energy accumulator; and

the check valve, the check valve set up in first hold the chamber with the second holds between the chamber, the second holds the brake fluid in the chamber and can pass through the check valve flows into first chamber that holds.

In addition, according to the miniaturized single-channel ABS hydraulic control module provided by the embodiments of the present application, the following additional technical features may also be provided:

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 a brake of a vehicle is depressed;

in the pressure maintaining state, the pressure reduction on-off valve is closed, and the pressure increase on-off valve is closed, so that the pressure of the wheel cylinder is a constant value;

in the pressure reduction state, the pressure-increasing open-close valve is closed, the pressure-reducing open-close valve is opened and closed circularly, and the 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 opened and closed circularly, 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 then 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 master pump oil port is communicated with the first containing cavity through the first flow passage and the fourth flow passage which are sequentially connected, the first containing cavity is communicated with the wheel cylinder oil port through the fifth flow passage and the second flow passage which are sequentially connected, the part, far away from the wheel cylinder oil port, of the second flow passage is communicated with the second containing cavity through the sixth flow passage, and the second containing cavity is communicated with the energy accumulator through the seventh flow passage and the third flow passage which are sequentially connected.

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

In alternative embodiments of the present application, the seal is a seal steel ball or a seal plate.

In the optional embodiment of this application, the closing plate includes plate body, sealing washer, sealed arch, the mounting groove has been seted up to the main valve piece, the sealing washer along the edge distribution of plate body, sealed arch connect in the plate body and with the sealing washer is in same one side of plate body, the plate body is fixed in the mounting groove, the fourth runner the fifth runner the sixth runner with the opening of seventh runner is respectively by one sealed protruding shutoff.

In an optional embodiment of the application, the miniaturized single-channel ABS hydraulic control module further includes an electrical connection assembly, where the electrical connection assembly includes a first coil, a second coil, a first coil gasket, a second coil gasket, a first coil patch cord, and a second coil patch cord;

the first coil is sleeved on the pressure-increasing switch valve and located in the first accommodating cavity, the first coil gasket is abutted against one end, far away from the second accommodating cavity, of the first coil, 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 reduction switch valve and located in the second containing cavity, the second coil gasket is abutted to one end, far away from the first containing cavity, of the second coil, the second coil transfer line is electrically connected with the second coil and used for electrically connecting the second coil with the outside, and the energy accumulator is abutted to one side, far away from the first containing cavity, of the second coil gasket.

In the optional embodiment of this application, the energy storage ware include the energy storage ware valve body and set up in energy storage ware piston, O type circle, energy storage ware spring and the energy storage ware of the inside cavity of energy storage ware valve body keep off the lid, inside cavity with the second holds the chamber intercommunication, O type circle cover is located the energy storage ware piston, the one end of energy storage ware spring with the energy storage ware keeps off the lid and connects, the other one end of energy storage ware spring with the energy storage ware piston supports to hold.

In an alternative embodiment of the 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 an anti-lock braking system, including signal acquisition subassembly, electronic control unit and according to any one of the aforesaid miniaturized single channel ABS hydraulic control module, the signal acquisition subassembly is used for gathering miniaturized single channel ABS hydraulic control module's information and to electronic control unit feedback data, electronic control unit basis data control miniaturized single channel ABS hydraulic control module work.

The beneficial effect of this application is:

miniaturized single channel ABS hydraulic control module holds the chamber coaxial arrangement through the first chamber and the second that holds with the main valve piece, make pressure boost ooff valve and decompression ooff valve's valve port relative and be the straight line and arrange, make the shape of whole module be long and thin form, in addition, this kind of arrangement makes this application can realize hydraulic control with the structure of more retrenching, holistic volume obtains reducing, whole module can be realized installing the use in more narrow and small space, the braking anti-lock system who uses this miniaturized single channel ABS hydraulic control module also can come into operation in more motorcycle types, it is more extensive to use, satisfy the safety demand.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

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 from one perspective;

FIG. 5 is a schematic view of FIG. 4 from another perspective;

FIG. 6 is a hydraulic schematic;

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

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

An icon: 100-a miniaturized single-channel ABS hydraulic control module; 10-a main valve block; 11-master pump oil port; 12-wheel cylinder oil port; 13-a first containing cavity; 14-a second containing cavity; 101-a first flow channel; 102-a second flow channel; 103-a third flow channel; 104-a fourth flow channel; 105-a fifth flow channel; 106-sixth flow path; 107-a seventh flow channel; 20-a boost on-off valve; 30-an accumulator; 31-an accumulator valve body; 32-an accumulator piston; 33-O-ring; 34-an accumulator spring; 35-accumulator flap; 40-a pressure reducing switch valve; 50-a one-way valve; 61-a first coil; 62-a second coil; 63-a first coil pad; 64-a second coil pad; 65-a first coil patch cord; 66-a second coil patch cord; 67-coil shield cover; 71-sealing steel balls; 72-a sealing plate; 721-a plate body; 722-a sealing ring; 723-sealing projection; 74-mounting groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in 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 obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

Example 1

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

the master valve block 10 comprises a master pump oil port 11, a wheel cylinder oil port 12, a first accommodating cavity 13 and a second accommodating cavity 14, the master 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 master valve block 10;

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

the accumulator 30, the accumulator 30 is connected with main valve block 10, the accumulator 30 communicates with second and holds the cavity 14;

the pressure-reducing switch valve 40 is arranged in the second accommodating cavity 14 and can control the on-off of the wheel cylinder oil port 12 and the energy accumulator 30; and

and a check valve 50, the check valve 50 being disposed between the first accommodating chamber 13 and the second accommodating chamber 14, the brake fluid in the second accommodating chamber 14 being able to flow into the first accommodating chamber 13 through the check valve 50.

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

the master pump oil port 11 is communicated with the first containing cavity 13 through a first flow passage 101 and a fourth flow passage 104 which are sequentially connected, the first containing 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, the part, far away from the wheel cylinder oil port 12, of the second flow passage 102 is communicated with the second containing cavity 14 through a sixth flow passage 106, and the second containing 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 valve port of the pressure-increasing switch valve 20 is normally open, so that when the vehicle does not have a tendency of locking, the brake master cylinder is directly communicated with the wheel cylinder, thereby meeting 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 through the third flow passage 103 and the seventh flow passage 107). The check valve 50 allows the brake fluid to flow from the accumulator 30 into the first accommodation chamber 13 only in one direction, and not to flow from the pressure-reducing switch valve 40 into the sixth flow passage 106 and the second flow passage 102.

When the brake of the vehicle is pressed down, 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 open-close valve 40 is closed, and the pressure-increasing open-close valve 20 is closed, so that the pressure of the wheel cylinder is a constant value;

in the pressure reduction state, the pressure-increasing open-close valve 20 is closed, the pressure-reducing open-close valve 40 is opened and closed in a circulating manner, 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 pressurization state, the pressure-reducing open-close valve 40 is closed, the pressurization open-close valve 20 is opened and closed circularly, and the brake fluid flows into the wheel cylinder from the master cylinder port 11, 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 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 pump through the master pump port 11.

Openings of the fourth flow passage 104, the fifth flow passage 105, the sixth flow passage 106, and the seventh flow passage 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 this embodiment further includes an electrical connection component, where the electrical connection component includes a first coil 61, a second coil 62, a first coil gasket 63, a second coil gasket 64, a first coil patch cord 65, and a second coil patch cord 66;

the first coil 61 is sleeved on the pressure-increasing switch valve 20 and is located in the first accommodating cavity 13, the first coil gasket 63 abuts against one end, far away from the second accommodating cavity 14, of the first coil 61, 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 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 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 transfer wire 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, an O-ring 33, an accumulator spring 34 and an accumulator blocking cover 35, wherein the accumulator piston 32, the O-ring 33, the accumulator spring 34 and the accumulator blocking cover 35 are arranged in a cavity inside the accumulator valve body 31, the cavity inside is communicated with the second accommodating cavity 14, the O-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 abutted against the accumulator piston 32.

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 utility model provides a set up the valve port of pressure boost ooff valve 20 and decompression ooff valve 40 relatively and arrange according to the straight line mode innovatively, make the structure of whole module slim, and only need two high-speed ooff valves, a check valve 50, the function of controlling braking force fast accurately can be realized just to an energy storage ware 30, make the volume of whole module also miniaturized, thereby can arrange in narrow vehicle inner space such as electric power-assisted bicycle frame, front fork is nimble, and the size of energy storage ware 30 is in the width scope of main valve piece 10, further ensure the miniaturization and the slimness of structure, do not influence the installation because energy storage ware 30 has the expenditure on the width direction of main valve piece 10 and lay.

Based on above-mentioned miniaturized single channel ABS hydraulic control module 100, the embodiment of this application provides a braking anti-lock system, including signal acquisition subassembly, electronic control unit and miniaturized single channel ABS hydraulic control module 100, the signal acquisition subassembly is used for gathering miniaturized single channel ABS hydraulic control module 100's information and to electronic control unit feedback data, electronic control unit is according to the work of data control miniaturized single channel ABS hydraulic control module 100. The signal acquisition assembly and the electronic control unit can refer to corresponding assemblies and units in the prior art, and are not described in detail herein.

The principle of the embodiment is as follows:

the main valve block 10 is designed as a long bar-shaped structure, and the components are pressed into the main valve block 10 from both end faces in the length direction. The pressure-increasing switching valve 20 and the pressure-reducing switching valve 40 are arranged on a straight line in a valve port-to-valve manner, the outlet of the pressure-reducing switching valve 40 is connected with the inlet of the pressure-increasing switching valve 20 through a check valve 50, and the straight line arrangement of the switching valves is the basis for realizing the slimness of the whole structure. A flow passage is formed on the side of the main valve block 10, and the outlet of the pressure-increasing open-close valve 20, the inlet of the pressure-reducing open-close valve 40 and the wheel cylinder oil port 12 are connected on the premise of occupying less volume. The accumulator 30 is disposed in a longitudinal direction, is press-fitted into the main valve block 10 after assembly, and is interference-fitted with the main valve block 10, and is provided with a flow passage to be directly communicated with an outlet of the pressure reducing switch valve 40. The coil blocking cover 67 and the accumulator valve body 31 are in interference fit with the main valve block 10 respectively, and two coils and coil gaskets are pressed on the main valve block 10 to realize the positioning of the coils. The coil patch cord is connected with the coil and an electronic control unit of the ABS and transmits electric energy and electric signals.

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

ABS works in three states of pressure maintaining, pressure increasing and pressure reducing. When the pressure of the wheel cylinder H can just enable the wheel slip rate to be maintained at a desired value, the pressure-increasing switch valve 20 is electrified and quickly closed, so that the pressure in the wheel cylinder is maintained at a constant value, and the wheel cylinder enters a pressure maintaining state; when the wheel cylinder pressure makes the wheel slip ratio higher than the desired value, that is, when the wheel cylinder pressure is too high, the pressure-increasing open-close valve 20 is kept in a closed state, and the pressure-reducing open-close valve 40 is rapidly opened and closed, so that the pressure in the wheel cylinder is reduced to the desired value (first threshold value) in a step trend, and the process is a pressure-reducing stage; when the wheel cylinder pressure is such that the wheel slip ratio is lower than the desired value, that is, when the wheel cylinder pressure is too small, the pressure-reducing open-close valve 40 is kept closed, and the pressure-increasing open-close valve 20 is rapidly opened and closed so that the wheel cylinder pressure increases in a stepwise manner to the desired value (the second threshold value may be the same as the first threshold value, or may be set separately depending on the pressure requirement), which is a pressure-increasing stage. Through the rapid opening and closing of the pressure-increasing switch valve 20 and the pressure-reducing switch valve 40, the wheel cylinder cavity is subjected to pressure maintaining, pressure increasing and pressure reducing processes rapidly and orderly, so that the pressure of the wheel cylinder cavity is controlled, the wheel is always in a state of rolling and slipping (the slip rate is about 20%), and the wheel is prevented from being locked. The brake fluid discharged from the pressure reducing switch valve 40 enters the accumulator 30, when the brake is released, the pressure of the master cylinder S is lower than the pressure in the accumulator 30, and the brake fluid flows back to the master cylinder through the check valve 50, so that the circulation of the brake fluid is realized. The back pressure of the accumulator 30 is required to be slightly larger than the opening pressure of the check valve 50, so that the smooth return of the 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 that of the master cylinder, so that the phenomenon that the wheel cylinder pressure is too high to cause wheel locking 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 the ABS can cause all the brake fluid in the master cylinder to enter the accumulator 30, so that the pressure of the wheel cylinder cannot be maintained, and at this time, the driver of the vehicle is required to quickly release the brake, so that the brake fluid in the accumulator 30 flows back to the master cylinder through the one-way valve 50, and then quickly presses down the brake, so as to continuously trigger the ABS. The operation is simple and the operation is easy to be carried out, so that the method has enough practicability.

In the embodiment, the pressure-increasing switch valve 20 and the pressure-reducing switch valve 40 are controlled to be opened and closed quickly, so that the wheel cylinder cavity is subjected to pressure maintaining, pressure increasing and pressure reducing processes quickly and orderly, the pressure of the wheel cylinder cavity is controlled, the wheel is always in a state of rolling and slipping (the slip rate is about 20%), and the wheel is prevented from being locked. And under the condition of realizing the function basis, still through structural design for whole miniaturized single channel ABS hydraulic control module 100's volume is littleer, and the structure is long and thin, conveniently lays in some narrow and small spaces, mainly is applicable to two-wheeled light vehicles such as light motorcycle, electric bicycle, electric power bicycle.

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

Example 2

Referring to fig. 7 and fig. 8, the difference between the present embodiment and the present embodiment is: 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 an installation 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 installation groove 74, and openings of the fourth flow channel 104, the fifth flow channel 105, the sixth flow channel 106, and the seventh flow channel 107 are respectively blocked by one sealing protrusion 723.

The rest of the structure and functions can be referred to embodiment 1 and the prior art.

By using the sealing plate 72, after the electrical connection assembly and the energy accumulator 30 are mounted, the sealing protrusion 723 can be aligned to the fabrication hole on the main valve block 10, and pressed in by pressing, so that the sealing protrusion 723 is in interference fit with the hole wall of the fabrication hole, and the plate body 721 can be fixed with the main valve block 10 by using a bolt, so that the plate body 721 is embedded into the mounting groove 74 and does not protrude from the main valve block 10, thereby sealing a plurality of fabrication holes at one time, improving the assembly efficiency, and simultaneously not affecting the overall volume of the module. The sealing ring 722 can further improve the sealing performance and prevent external impurities from entering.

To sum up, the miniaturized single channel ABS hydraulic control module 100 of this application holds chamber 13 and the coaxial arrangement of second holding chamber 14 through the first holding chamber with main valve block 10 for boost switch valve 20 and decompression switch valve 40's valve port is relative and is the straight line and arranges, make the shape of whole module be long and thin form, in addition, this kind of arrangement makes this application realize hydraulic control with the structure of more retrenching, holistic volume is reduced, whole module can realize installing in more narrow and small space and use, the braking anti-lock braking system who uses this miniaturized single channel ABS hydraulic control module 100 also can come into use in more motorcycle types, it is more extensive to use, satisfy the safety requirement.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a miniaturized single channel ABS hydraulic control module which characterized in that includes:

2. The miniaturized single channel ABS hydraulic control module of claim 1 wherein the miniaturized single channel ABS hydraulic control module has a hold pressure state, a reduced pressure state, and a pressurized state when a brake of a 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;

3. The miniaturized single channel ABS hydraulic control module of claim 2 wherein the main valve block includes first, second and third flow channels extending in the length direction, fourth, fifth, sixth and seventh flow channels extending perpendicular to the length direction;

4. The miniaturized single channel ABS hydraulic control module of claim 3, wherein openings of the fourth, fifth, sixth, and seventh flow channels are sealed by seals.

5. The miniaturized single channel ABS hydraulic control module of claim 4, wherein the seal is a sealing steel ball or a sealing plate.

6. The small-sized single-channel ABS hydraulic control module according to claim 5, wherein the sealing plate comprises a plate body, a sealing ring and a sealing protrusion, the main valve block is provided with an installation groove, the sealing ring is distributed along the edge of the plate body, the sealing protrusion is 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 installation groove, and the openings of the fourth flow channel, the fifth flow channel, the sixth flow channel and the seventh flow channel are respectively blocked by one sealing protrusion.

7. 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 gasket, a second coil gasket, a first coil patch cord, a second coil patch cord;

8. The miniaturized single-channel ABS hydraulic control module of claim 1, wherein the accumulator includes an accumulator valve body, and an accumulator piston, an O-ring, an accumulator spring, and an accumulator cover disposed in an internal chamber of the accumulator valve body, the internal chamber is communicated with the second receiving 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 abutted against the accumulator piston.

9. The miniaturized single channel ABS hydraulic control module of claim 8 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.

10. An anti-lock braking system, characterized by comprising a signal acquisition component, an electronic control unit and the miniaturized single-channel ABS hydraulic control module according to any one of claims 1-9, 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.