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CN218616613U - Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle - Google Patents

Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle Download PDF

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Publication number
CN218616613U
CN218616613U CN202222919114.9U CN202222919114U CN218616613U CN 218616613 U CN218616613 U CN 218616613U CN 202222919114 U CN202222919114 U CN 202222919114U CN 218616613 U CN218616613 U CN 218616613U
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China
Prior art keywords
brake
brake cylinder
branch
cylinder
valve
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CN202222919114.9U
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Chinese (zh)
Inventor
李兵歌
徐建栋
姚宇刚
熊伟
黎亦辉
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BYD Co Ltd
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BYD Co Ltd
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Abstract

The utility model discloses a hydraulic pressure piece, hydraulic assembly, braking system and vehicle for vehicle braking system. The hydraulic block comprises a hydraulic block body, a first brake cylinder and a second brake cylinder, wherein an oil inlet connector, a second brake cylinder mounting hole, a brake wheel cylinder connector, a first brake cylinder regulating valve mounting hole and a second brake cylinder regulating valve mounting hole are formed in the hydraulic block body; the first brake cylinder comprises a first piston, a brake cavity is defined in the first brake cylinder, the second brake cylinder comprises a second piston, the first piston can move to the position where the brake cavity is isolated from a brake fluid pot, and when the second piston acts to pressurize, a first pressure relief detection branch is formed by a brake branch of the first brake cylinder and a brake branch of the second brake cylinder. According to the utility model discloses a hydraulic pressure piece utilizes the first piston activity of first checking cylinder extremely the braking chamber with the brake fluid kettle is isolated to be opened, hydraulic pressure piece simple structure.

Description

Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle
Technical Field
The utility model relates to a vehicle braking technical field particularly, relates to a braking system and vehicle that is used for vehicle braking system's hydraulic pressure piece, is used for vehicle braking system's hydraulic pressure subassembly, vehicle.
Background
In the related technology, a detection main cylinder is integrated with a 14-valve hydraulic block, the structure of the hydraulic block is complex, and for a brake system using the 14-valve hydraulic block, when the brake system is detected to be leaked, a detection valve is needed to be used for closing the connection between the detection main cylinder and a brake fluid pot, so that the operation of the detection process is complex.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a hydraulic block for vehicle braking system, simple structure.
The utility model also provides a hydraulic assembly of having above-mentioned hydraulic block.
The utility model also provides a braking system of having above-mentioned hydraulic assembly.
The utility model also provides a vehicle of having above-mentioned braking system.
The hydraulic block for the vehicle brake system according to the embodiment of the present invention includes a hydraulic block body, a first brake cylinder and a second brake cylinder, the hydraulic block body is provided with an oil inlet interface for connecting the first brake cylinder, a second brake cylinder mounting hole for mounting the second brake cylinder, a brake cylinder interface for connecting the brake cylinder, a first brake cylinder isolating valve mounting hole for mounting the first brake cylinder isolating valve, a second brake cylinder regulating valve mounting hole for mounting the second brake cylinder regulating valve, and a pressure sensor mounting hole for mounting a pressure sensor, the second brake cylinder is mounted in the second brake cylinder mounting hole, a first brake cylinder brake branch, a second brake cylinder brake branch, and a wheel cylinder brake branch are formed in the hydraulic block body, the second brake cylinder brake branch is suitable for connecting a brake fluid bottle, the oil inlet interface and the first brake cylinder isolating valve mounting hole are located on the first brake branch, the second brake cylinder mounting hole and the second brake cylinder regulating valve mounting hole are located on the second brake cylinder brake branch, the brake interface is located on the brake branch, one of the first brake branch and the second brake cylinder brake branch is a mechanical brake cylinder, and the brake cylinder brake branch is connected with the other brake cylinder;
the wheel cylinder braking branch is connected with the brake fluid pot, the oil inlet interface is kept closed through a passage from the wheel cylinder braking branch to the brake fluid pot, the first brake cylinder comprises a first piston, the first piston is in a braking cavity is defined in the first brake cylinder, the second brake cylinder comprises a second piston, the first piston can move to the braking cavity is isolated from the brake fluid pot, so that when the second piston acts and pressurizes, the first brake cylinder braking branch and the second brake cylinder braking branch form a first pressure relief detection branch.
According to the utility model discloses a hydraulic pressure piece for vehicle braking system need not to adopt FDV check valve to carry out hydraulic pressure leak detection, only need utilize the first piston activity of first checking cylinder extremely the braking chamber with the brake fluid kettle is isolated to be opened, can replace the braking chamber with set up FDV check valve between the brake fluid kettle and close and realize hydraulic pressure leak detection.
According to some embodiments of the utility model, the oil feed interface includes first oil feed interface, second oil feed interface, first brake cylinder isolating valve mounting hole includes first mounting hole of first brake cylinder isolating valve and first brake cylinder isolating valve second mounting hole, first brake cylinder braking branch road includes first braking branch road and second braking branch road, first oil feed interface with first mounting hole of first brake cylinder isolating valve is seted up on the first braking branch road, the second oil feed interface with first brake cylinder isolating valve second mounting hole is seted up on the second braking branch road.
According to some embodiments of the present invention, the second brake cylinder braking branch includes a third braking branch, a fourth braking branch, the second brake cylinder regulating valve mounting hole includes a second brake cylinder regulating valve first mounting hole and a second brake cylinder regulating valve second mounting hole, the second brake cylinder regulating valve first mounting hole is seted up on the third braking branch, the second brake cylinder regulating valve second mounting hole is seted up on the fourth braking branch.
According to the utility model discloses a some embodiments, the wheel cylinder braking branch road includes first group wheel cylinder branch road, second group wheel cylinder branch road, first group wheel cylinder branch road is including parallelly connected first wheel cylinder branch road, second group wheel cylinder branch road is including parallelly connected third wheel cylinder branch road, fourth wheel cylinder branch road, first braking branch road the third braking branch road all with first group wheel cylinder branch road is connected, the second braking branch road the fourth braking branch road all with second group wheel cylinder branch road is connected.
According to the utility model discloses a some embodiments, still be equipped with the pressure retaining valve mounting hole that is used for installing the pressure retaining valve on the hydraulic block body, the pressure retaining valve mounting hole is located wheel cylinder braking is on the road.
According to some embodiments of the present invention, the hydraulic block body is further provided with a fluid-replenishing fluid return pipe connector for connecting the brake fluid pot and a pressure-reducing valve mounting hole for mounting a pressure-reducing valve, a fluid-replenishing fluid return branch is further formed in the hydraulic block body, the fluid-replenishing fluid return branch is adapted to be connected to the wheel cylinder brake branch, the second brake cylinder brake branch is connected to the brake fluid pot through the fluid-replenishing fluid return branch, and the fluid-replenishing fluid return pipe connector and the pressure-reducing valve mounting hole are located on the fluid-replenishing fluid return branch;
wherein, when each pressure reducing valve is kept closed, the first brake cylinder braking branch, the second brake cylinder braking branch and the wheel cylinder braking branch form a second pressure relief detection branch with the first pressure relief detection branch.
According to some embodiments of the present invention, the hydraulic block body is further provided with a simulator mounting hole for mounting a pedal stroke simulator and a simulator control valve mounting hole for mounting a simulator control valve, a simulator branch is formed in the hydraulic block body, the simulator mounting hole and the simulator control valve mounting hole are located on the simulator branch, and the simulator control valve mounting hole is located between the simulator mounting hole and the oil inlet port;
when the simulator regulating valve is closed, the first brake cylinder braking branch, the second brake cylinder braking branch and the wheel cylinder braking branch form the second pressure relief detection branch.
According to some embodiments of the utility model, simulator governing valve mounting hole with second checking cylinder mounting hole sets up in the coplanar of hydraulic block body, just simulator governing valve mounting hole with the axis of second checking cylinder mounting hole is parallel.
According to some embodiments of the present invention, the pressure reducing valve mounting holes and the pressure retaining valve mounting holes are the same in number as the wheels of the vehicle;
the number of the linear valve holes of the hydraulic block for the vehicle brake system is 13, wherein the 13 linear valve holes include 4 pressure reducing valve mounting holes, 4 pressure maintaining valve mounting holes, 2 first brake cylinder isolating valve mounting holes, 2 second brake cylinder regulating valve mounting holes, and 1 simulator regulating valve mounting hole;
or, the number of the linear valve holes of the hydraulic block for the vehicle brake system is 17, wherein the 17 linear valve holes include 6 pressure reducing valve mounting holes, 6 pressure maintaining valve mounting holes, 2 first brake cylinder isolating valve mounting holes, 2 second brake cylinder regulating valve mounting holes, and 1 simulator regulating valve mounting hole;
or, be used for the linear valve hole of vehicle braking system's hydraulic block 21, wherein, 21 linear valve hole includes 8 relief valve mounting hole, 8 pressure retaining valve mounting hole, 2 first brake cylinder isolating valve mounting hole, 2 second brake cylinder governing valve mounting hole, 1 simulator governing valve mounting hole.
According to the utility model discloses a some embodiments, still be equipped with the fast sensor mounting hole of wheel that is used for installing the fast sensor of wheel on the hydraulic block body.
According to the utility model discloses a some embodiments, still be equipped with whole car fixed interface on the hydraulic block body, be used for connecting the motor interface of motor.
According to some embodiments of the invention, one of the first brake cylinder and the second brake cylinder is a mechanical brake cylinder and the other is a first piston pump; or, the first brake cylinder and the second brake cylinder are both a first piston pump.
According to some embodiments of the utility model, first checking cylinder with second checking cylinder components of a whole that can function independently sets up, the oil feed interface is the oil feed pipe interface.
According to some embodiments of the present invention, the first piston will the brake chamber divide into first brake chamber and second brake chamber, brake pedal with the first piston links to each other.
According to the utility model discloses a hydraulic assembly for vehicle braking system of another aspect embodiment includes:
the above-described hydraulic block for a vehicle brake system;
the pressure reducing valve is arranged at a pressure reducing valve mounting hole of the hydraulic block and is used for communicating or cutting off a fluid supplementing and returning branch of the hydraulic block and a corresponding wheel cylinder braking branch;
the pressure retaining valve is arranged at a pressure retaining valve mounting hole of the hydraulic block and is used for opening or cutting off the wheel cylinder braking branch;
a second brake cylinder regulating valve mounted at the second brake cylinder regulating valve mounting hole, the second brake cylinder regulating valve for opening or shutting off the second brake cylinder braking branch;
a first brake cylinder isolation valve mounted at the first brake cylinder isolation valve mounting hole, the first brake cylinder isolation valve for opening or interrupting the first brake cylinder braking branch;
the simulator regulating valve is installed at a mounting hole of the simulator regulating valve of the hydraulic block and used for opening or cutting off a simulator branch of the hydraulic block.
According to some embodiments of the invention, the hydraulic assembly has a first operating condition in which the second brake cylinder regulating valve is open the first brake cylinder isolating valve is closed the simulator regulating valve is closed, a second operating condition in which the second brake cylinder regulating valve is closed the first brake cylinder isolating valve is open the simulator regulating valve is closed, a third operating condition in which the second brake cylinder regulating valve is open the first brake cylinder isolating valve is closed the simulator regulating valve is open.
According to another aspect of the present invention, a brake system for a vehicle includes:
in the above hydraulic assembly for a vehicle braking system, the first brake cylinder has a first brake cavity and a second brake cavity, the first brake cavity is connected to a first oil inlet interface of the oil inlet interfaces, and the second brake cavity is connected to a second oil inlet interface of the oil inlet interfaces;
and the brake wheel cylinder is connected with the brake wheel cylinder interface.
According to another aspect of the present invention, a vehicle includes the above-mentioned brake system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a first perspective front view of a hydraulic block according to an embodiment of the present invention;
fig. 2 is a second perspective front view of a hydraulic block according to an embodiment of the present invention;
fig. 3 is a first perspective view of a hydraulic block according to an embodiment of the present invention;
fig. 4 is a second perspective view of a hydraulic block according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a first perspective of an internal flow path of a hydraulic block according to an embodiment of the invention;
figure 6 is a schematic diagram of a second view of the internal flow path of the hydraulic block according to an embodiment of the present invention;
figure 7 is a schematic diagram of a third perspective of the internal flow path of a hydraulic block according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a hydraulic assembly according to an embodiment of the present invention;
fig. 9 is a schematic flow diagram of a braking system according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a vehicle according to an embodiment of the present invention.
Reference numerals:
the hydraulic assembly 1000, the hydraulic block 1, the pressure reducing valve mounting hole 21, the first pressure reducing valve mounting hole 2101, the second pressure reducing valve mounting hole 2102, the third pressure reducing valve mounting hole 2103, the fourth pressure reducing valve mounting hole 2104, the pressure maintaining valve mounting hole 22, the first pressure maintaining valve mounting hole 221, the second pressure maintaining valve mounting hole 222, the third pressure maintaining valve mounting hole 223, the fourth pressure maintaining valve mounting hole 224, the second brake cylinder regulating valve mounting hole 23, the second brake cylinder regulating valve first mounting hole 231, the second brake cylinder regulating valve second mounting hole 232, the first brake cylinder isolating valve mounting hole 24, the first brake cylinder isolating valve first mounting hole 241, the first brake cylinder isolating valve second mounting hole 242, the simulator regulating valve mounting hole 25, the sensor mounting hole 3, the pressure sensor mounting hole 31, the rotation speed sensor mounting hole 32, the simulator oil inlet mounting hole 4, the second brake cylinder mounting hole 5, the brake cylinder interface 6, the first wheel cylinder interface 61, the second wheel cylinder interface 62, the third wheel interface 63, the fourth wheel interface 64, the oil inlet interface 7, the first oil inlet interface 71, the second oil inlet interface 72, the second oil return interface 72, the hydraulic fluid supplementing interface fixing port 10, the hydraulic motor interface support port 11, and the hydraulic motor interface;
the brake system comprises a mechanical brake branch L12, a first brake branch L1, a second brake branch L2, a second brake cylinder brake branch L34, a third brake branch L3, a fourth brake branch L4, a wheel cylinder brake branch L56, a first group of wheel cylinder branches L5, a first wheel cylinder branch L51, a second wheel cylinder branch L52, a second group of wheel cylinder branches L6, a third wheel cylinder branch L61, a fourth wheel cylinder branch L62, a simulator branch L7 and a fluid supplementing and returning branch L8;
a first pressure reducing valve 201, a second pressure reducing valve 202, a third pressure reducing valve 203, a fourth pressure reducing valve 204, a first pressure retaining valve 205, a second pressure retaining valve 206, a third pressure retaining valve 207, a fourth pressure retaining valve 208, a second brake cylinder first regulating valve 209, a second brake cylinder second regulating valve 210, a first brake cylinder first isolating valve 211, a first brake cylinder second isolating valve 212, a simulator regulating valve 213, a first pressure sensor 214, a rotation speed sensor 215, a pedal stroke simulator 216, a second pressure sensor 217;
first brake cylinder 2000, first brake chamber 2001, second brake chamber 2002, first piston 2003, first brake wheel cylinder 3001, second brake wheel cylinder 3002, third brake wheel cylinder 3003, fourth brake wheel cylinder 3004, brake system 4000, brake pedal 4001, displacement sensor 4002, brake fluid reservoir 4003, second brake cylinder 4004, and vehicle 5000.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
A hydraulic block 1 for a vehicle brake system 4000 according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 10.
Referring to fig. 1-9, a hydraulic block 1 for vehicle braking system 4000 according to the embodiment of the present invention includes a hydraulic block body, a first brake cylinder 2000 and a second brake cylinder 4004, the hydraulic block body is provided with a second brake cylinder mounting hole 5, a brake wheel cylinder interface 6, an oil inlet interface 7, a second brake cylinder regulating valve mounting hole 23, a first brake cylinder isolating valve mounting hole 24, a pressure sensor mounting hole 31, the second brake cylinder 4004 is installed in the second brake cylinder mounting hole 5, the second brake cylinder mounting hole 5 is used for installing the second brake cylinder 4004, the hydraulic block 1 hydraulic block body can be eliminated with the FDV detection valve mounting hole, so that the hydraulic block 1 is structurally simplified. The brake cylinder interface 6 is used for connecting a brake cylinder, the oil inlet interface 7 is used for connecting a first brake cylinder 2000, the second brake cylinder regulating valve mounting hole 23 is used for mounting a second brake cylinder regulating valve, the first brake cylinder isolating valve mounting hole 24 is used for mounting a first brake cylinder isolating valve, and the pressure sensor mounting hole 31 is used for mounting a pressure sensor.
Alternatively, the number of the second brake cylinder mounting holes 5 may be one or more, and a corresponding second brake cylinder 4004 is mounted at each second brake cylinder mounting hole 5.
A first brake cylinder braking branch L12, a second brake cylinder braking branch L34 and a wheel cylinder braking branch L56 are formed in the hydraulic block body, the second brake cylinder braking branch L34 is suitable for being connected with a brake fluid pot 4003, the oil inlet port 7 and the first brake cylinder isolation valve installation hole 24 are located in the first brake cylinder braking branch L12, the first brake cylinder isolation valve is installed at the first brake cylinder isolation valve installation hole 24, and the first brake cylinder isolation valve is used for opening or cutting off the first brake cylinder braking branch L12. The first brake cylinder braking branch L12 is connected between the oil inlet port 7 and the wheel cylinder braking branch L56, the second brake cylinder mounting hole 5 and the second brake cylinder regulating valve mounting hole 23 are located on the second brake cylinder braking branch L34, the second brake cylinder braking branch L34 is connected between the second brake cylinder mounting hole 5 and the wheel cylinder braking branch L56, and the second brake cylinder regulating valve is mounted at the second brake cylinder regulating valve mounting hole 23, and the second brake cylinder regulating valve is used for opening or cutting off the second brake cylinder braking branch L34. The brake wheel cylinder interface 6 is located on the wheel cylinder brake branch L56, and the first brake-cylinder brake branch L12 and the second brake-cylinder brake branch L34 are both connected with the wheel cylinder brake branch L56.
One of the first brake cylinder braking branch L12 and the second brake cylinder braking branch L34 is a mechanical braking branch, and the other is a brake-by-wire branch. For example, in the example of fig. 9, first brake cylinder brake branch L12 is a mechanical brake branch and second brake cylinder brake branch L34 is a brake-by-wire branch.
Wheel cylinder brake branch L56 is connected to brake fluid reservoir 4003, first brake cylinder 2000 includes first piston 2003, first piston 2003 defines a brake chamber in first brake cylinder 2000, and second brake cylinder 4004 includes a second piston, when a leakage condition of the vehicle brake system is detected, oil inlet port 7 is kept closed through wheel cylinder brake branch L56 to brake fluid reservoir 4003, first piston 2003 can be moved to isolate the brake chamber from brake fluid reservoir 4003, so that when the second piston is operated to pressurize, first brake cylinder brake branch L12 and second brake cylinder brake branch L34 form a first pressure relief detection branch.
The detection principle is as follows: the brake pedal 4001 is firstly stepped on to enable the brake pedal 4001 to cross an idle stroke, so that the first piston 2003 moves to a position for separating a brake cavity from a brake fluid pot 4003, then the system is electrified to enable the first brake cylinder brake branch L12 and the second brake cylinder brake branch L34 to form a first pressure relief detection branch, the second piston acts to increase pressure to build pressure inside the system, the pressure sensor detects the pressure inside the system, when the pressure detected by the pressure sensor reaches a target pressure (such as 3 MPa), the motor stops rotating, the pressure building stops, meanwhile, the pressure value of the pressure sensor is observed to decrease within a preset time period (such as 30 s), if the pressure value decreases or exceeds a preset range, leakage of the whole vehicle brake system 4000 is proved, and if the pressure value does not exceed the preset range, leakage of the whole vehicle brake system 4000 is proved.
In some embodiments of the present invention, referring to fig. 1-9, a plurality of pressure increasing valves (i.e., pressure maintaining valves) and a plurality of pressure reducing valves are disposed on the wheel cylinder braking branch L56, and the first brake cylinder 2000 includes at least one first brake cylinder isolation valve.
Wherein, first pressure release detects: when the pressure-maintaining valves or the first brake cylinder isolation valves are kept closed, a first pressure release detection branch capable of detecting the first brake cylinder brake branch L12 and the second brake cylinder brake branch L34 is formed.
Detection range: the first pressure relief detection branch may detect the presence of pressure relief in each of the components in first and second brake cylinder branch brake circuits L12, L34, and detect the presence of pressure relief in the respective isolation components, including first brake cylinder 2000, and the corresponding respective pressure increasing valves or first and second brake cylinder isolating valves.
Wherein, the second pressure release detects: when the pressure-maintaining valves, the first brake-cylinder isolating valves, and the second brake-cylinder adjusting valves are kept open and the pressure-reducing valves are kept closed, a second pressure-release detection branch is formed that detects the formation of the first brake-cylinder braking branch L12, the second brake-cylinder braking branch L34, and the wheel-cylinder braking branch L56. That is, when each pressure reducing valve is kept closed, the first brake-cylinder branch line L12, the second brake-cylinder branch line L34, and the wheel-cylinder branch line L56 form a second pressure-release detection branch line having the first pressure-release detection branch line.
Detection range: the second pressure relief detection branch may detect whether there is pressure relief in each of the components in first brake cylinder branch L12, second brake cylinder branch L34, and wheel cylinder branch L56, and whether there is pressure relief in a corresponding isolation component, which includes the first brake cylinder, the second brake cylinder, and the corresponding pressure relief valves in the second pressure relief detection branch.
Specifically referring to fig. 9, during the first pressure release detection, the first pressure-maintaining valve 205, the second pressure-maintaining valve 206, the third pressure-maintaining valve 207, and the fourth pressure-maintaining valve 208 are kept closed, or the first brake cylinder first isolation valve 211 and the first brake cylinder second isolation valve 212 are kept closed.
During the second pressure release detection, the first pressure retaining valve 205, the second pressure retaining valve 206, the third pressure retaining valve 207, the fourth pressure retaining valve 208, the first brake cylinder first isolation valve 211, the first brake cylinder second isolation valve 212, the second brake cylinder first regulation valve 209, and the second brake cylinder second regulation valve 210 are kept open, and the first pressure reducing valve 201, the second pressure reducing valve 202, the third pressure reducing valve 203, and the fourth pressure reducing valve 204 are closed.
The first and second pressure relief sensing branches may also include sensing whether the simulator regulator valve 213 is being relieved, for example.
A simulator branch L7 may be further disposed between brake fluid pot 4003 and first brake cylinder braking branch L12, where simulator branch L7 includes simulator regulator valve 213 and pedal stroke simulator 216, and when simulator branch L7 is disposed, simulator regulator valve 213 may be further closed, so that first brake cylinder braking branch L12 and second brake cylinder braking branch L34 form the first pressure relief detection branch, or so that first brake cylinder braking branch L12, second brake cylinder braking branch L34 and wheel cylinder braking branch L56 form the second pressure relief detection branch. At this time, the simulator governor valve 213 also belongs to the isolation member.
Specifically referring to fig. 9, in the first pressure release detection, the first pressure-maintaining valve 205, the second pressure-maintaining valve 206, the third pressure-maintaining valve 207, the fourth pressure-maintaining valve 208, and the simulator adjustment valve 213 are kept closed, or the first brake cylinder first isolation valve 211, the first brake cylinder second isolation valve 212, and the simulator adjustment valve 213 are kept closed.
During the second pressure release detection, the first pressure-maintaining valve 205, the second pressure-maintaining valve 206, the third pressure-maintaining valve 207, the fourth pressure-maintaining valve 208, the first brake cylinder first isolation valve 211, the first brake cylinder second isolation valve 212, the second brake cylinder first regulation valve 209, and the second brake cylinder second regulation valve 210 are kept open, and the first pressure-reducing valve 201, the second pressure-reducing valve 202, the third pressure-reducing valve 203, the fourth pressure-reducing valve 204, and the simulator regulation valve 213 are closed.
In the example of fig. 9, the first brake cylinder 2000 includes a cylinder and a first piston 2003 disposed within the cylinder, the first piston 2003 defining a brake chamber within the cylinder. The brake chambers include a first brake chamber 2001 and a second brake chamber 2002, and the first brake chamber 2001 and the second brake chamber 2002 are both connected to the first brake cylinder brake branch L12. The first piston 2003 includes a first sub-piston and a second sub-piston which define a first brake chamber 2001, a second brake chamber 2002 within a cylinder.
According to the embodiment of the present invention, when the hydraulic block 1 for the vehicle brake system 4000 is applied to the vehicle brake system, the leakage detection function of the vehicle brake system can be realized by changing the active state of the first piston 2003 of the hydraulic block 1, wherein the hydraulic block 1 includes the cylinder body of the first brake cylinder 2000, the first piston 2003 of the first brake cylinder 2000, the cylinder body (hydraulic block body) of the second brake cylinder 4004, the second piston of the second brake cylinder 4004, and the passage connecting the first brake cylinder 2000 and the second brake cylinder 4004. Hydraulic leakage detection can be achieved without adopting an FDV detection valve, and hydraulic leakage detection can be achieved by closing the FDV detection valve between the brake cavity and the brake fluid pot 4003 only by moving the first piston 2003 of the first brake cylinder 2000 to isolate the brake cavity from the brake fluid pot 4003. At this moment, not only can the first pressure relief detection branch be correspondingly set, but also the second pressure relief detection branch can be set, the corresponding first group of wheel cylinder branch L5 and/or second group of wheel cylinder branch L6 can be cut off as required, and whether the first branch piston and the second branch piston move to isolate the corresponding brake cavity from the brake fluid pot 4003 is matched, so as to correspondingly detect whether the pressure relief detection branch formed by the corresponding first brake branch L1, the second brake branch L2, the third brake branch L3 and the fourth brake branch L4 is pressure relieved.
Specifically, for example, the first sub-piston and the second sub-piston are moved to be isolated from the brake fluid pot 4003, the first pressure reducing valve 201, the second pressure reducing valve 202, the third pressure reducing valve 203 and the fourth pressure reducing valve 204 are kept in a closed state, and the first piston pump works to increase pressure, so that pressure relief detection of the whole brake system (the second pressure relief detection branch) can be realized. Wherein the simulator governor valve 213 remains closed when the pedal stroke simulator 216 is provided.
According to some embodiments of the present invention, referring to fig. 1-9, first brake cylinder 2000 is provided separately from second brake cylinder 4004, and oil inlet joint 7 is an oil inlet pipe joint. The cylinder body of the first brake cylinder 2000 and the cylinder body of the second brake cylinder 4004 may be provided separately, specifically, the first brake cylinder 2000 is a mechanical brake cylinder, the second brake cylinder 4004 is a first piston pump, the cylinder body of the mechanical brake cylinder and the cylinder body of the first piston pump are independent members, and they are not integrally connected, and they may be detachably connected when mounted, or may be separately mounted at different portions of the vehicle. At this time, the cylinder of the first piston pump is a hydraulic block body.
When first brake cylinder 2000 and second brake cylinder 4004 are provided separately, the hydraulic block for the vehicle brake system also includes first brake cylinder 2000 and second brake cylinder 4004, that is, a cylinder body including first brake cylinder 2000, first piston 2003 located in the cylinder body, a cylinder body (hydraulic block body) of second brake cylinder 4004, a second piston located in the hydraulic block body, and a passage communicating between first brake cylinder 2000 and second brake cylinder 4004. In this embodiment, the passage is a pipe. In other embodiments, the channel may be a flow path within the cylinder, where the two cylinders are detachably connected and communicate through the through hole.
An oil inlet port 7 for connecting the first brake cylinder 2000 and a second brake cylinder mounting hole 5 for mounting the second brake cylinder 4004 are formed in the hydraulic block body, the first brake cylinder 2000 can be arranged outside the hydraulic block 1, the first brake cylinder 2000 and the second brake cylinder 4004 are mutually independent parts, therefore, the structure of the hydraulic block 1 can be simplified, the first brake cylinder 2000 can be designed into master cylinders with different cylinder diameters according to vehicle types (passenger vehicles/commercial vehicles), and the size arrangement of the hydraulic block 1 is not limited.
In some embodiments of the present invention, referring to fig. 1-9, oil inlet interface 7 includes first oil inlet interface 71 and second oil inlet interface 72, first brake cylinder isolating valve mounting hole 24 includes first brake cylinder isolating valve first mounting hole 241 and first brake cylinder isolating valve second mounting hole 242, first brake cylinder braking branch L12 includes first braking branch L1 and second braking branch L2, first oil inlet interface 71 and first brake cylinder isolating valve first mounting hole 241 are opened on first braking branch L1, second oil inlet interface 72 and first brake cylinder isolating valve second mounting hole 242 are opened on second braking branch L2. The first brake cylinder isolating valve includes a first brake cylinder first isolating valve 211, a first brake cylinder second isolating valve 212, the first brake cylinder first isolating valve 211 is installed at the first brake cylinder isolating valve first installation hole 241, and the first brake cylinder first isolating valve 211 is used to open or block the first brake branch L1, the first brake cylinder second isolating valve 212 is installed at the first brake cylinder isolating valve second installation hole 242, and the first brake cylinder second isolating valve 212 is used to open or block the second brake branch L2. When the first braking branch L1 and the second braking branch L2 are opened, the first braking branch L1 and the second braking branch L2 are both communicated with the wheel cylinder braking branch L56, so that hydraulic oil in the first braking branch L1 and the second braking branch L2 can enter the wheel cylinder braking branch L56 to brake the wheel cylinder at the wheel cylinder interface 6, and braking of wheels is further realized. When the driver steps on the brake pedal 4001, hydraulic oil in the first brake cylinder 2000 can enter the first brake branch L1 and the second brake branch L2.
The first brake chamber 2001 is connected to the first brake branch L1, and the second brake chamber 2002 is connected to the second brake branch L2.
In some embodiments, first brake cylinder 2000 has a first brake chamber 2001 and a second brake chamber 2002, first brake chamber 2001 is connected to first oil inlet port 71, and second brake chamber 1002 is connected to second oil inlet port 72. When the first piston 2003 comprises a first sub-piston and a second sub-piston, when the leakage conditions of different branches of the vehicle braking system are detected, the first sub-piston and/or the second sub-piston in the first piston 2003 can be moved to an inlet which is communicated with the blocking brake fluid pot 4003 to the corresponding brake cavity according to needs, so that the corresponding brake cavity and the brake fluid pot 4003 are isolated.
In some embodiments, the hydraulic block body is configured to be a cuboid structure, the first oil inlet port 71 is located on the large surface of the hydraulic block body, and the second oil inlet port 72 is located on the narrow surface of the hydraulic block body, so that the two oil inlet pipes can be separated from each other in arrangement positions, the operation space is large, and pipeline connection is facilitated.
In some embodiments of the present invention, referring to fig. 9, the second brake cylinder braking branch L34 includes a third braking branch L3 and a fourth braking branch L4, the second brake cylinder regulating valve mounting hole 23 includes a second brake cylinder regulating valve first mounting hole 231 and a second brake cylinder regulating valve second mounting hole 232, the second brake cylinder regulating valve first mounting hole 231 is disposed on the third braking branch L3, and the second brake cylinder regulating valve second mounting hole 232 is disposed on the fourth braking branch L4. The second brake cylinder regulating valve mounting hole 23 includes a second brake cylinder regulating valve first mounting hole 231 and a second brake cylinder regulating valve second mounting hole 232, the second brake cylinder regulating valve includes a second brake cylinder first regulating valve 209 and a second brake cylinder second regulating valve 210, the second brake cylinder first regulating valve 209 is mounted at the second brake cylinder regulating valve first mounting hole 231, and the second brake cylinder first regulating valve 209 is used for opening or blocking the third brake branch L3, the second brake cylinder second regulating valve 210 is mounted at the second brake cylinder regulating valve second mounting hole 232, and the second brake cylinder second regulating valve 210 is used for opening or blocking the fourth brake branch L4. When the third braking branch L3 and the fourth braking branch L4 are opened, the third braking branch L3 and the fourth braking branch L4 are both communicated with the wheel cylinder braking branch L56, so that hydraulic oil in the third braking branch L3 and the fourth braking branch L4 can enter the wheel cylinder braking branch L56 to brake the wheel cylinder at the wheel cylinder interface 6, and further, the wheel is braked. When the second brake cylinder 4004 is in operation, hydraulic oil can enter the third brake branch L3 and the fourth brake branch L4.
In some embodiments of the present invention, referring to fig. 9, the wheel cylinder braking branch L56 includes a first set of wheel cylinder branch L5 and a second set of wheel cylinder branch L6, the first set of wheel cylinder branch L5 includes a first wheel cylinder branch L51 and a second wheel cylinder branch L52 connected in parallel, the second set of wheel cylinder branch L6 includes a third wheel cylinder branch L61 and a fourth wheel cylinder branch L62 connected in parallel, the first braking branch L1 and the third braking branch L3 are all connected to the first set of wheel cylinder branch L5, the second braking branch L2 and the fourth braking branch L4 are all connected to the second set of wheel cylinder branch L6. The brake cylinder interface 6 includes a first wheel cylinder interface 61, a second wheel cylinder interface 62, a third wheel cylinder interface 63, and a fourth wheel cylinder interface 64, the first wheel cylinder interface 61 is located on the first wheel cylinder branch L51, the first wheel cylinder interface 61 is used for connecting a first brake wheel cylinder 3001 of the vehicle 5000, the first brake wheel cylinder 3001 is disposed at the first wheel for braking the first wheel, the second wheel cylinder interface 62 is located on the second wheel cylinder branch L52, the second wheel cylinder interface 62 is used for connecting a second brake wheel cylinder 3002 of the vehicle 5000, the second brake wheel cylinder 3002 is disposed at the second wheel for braking the second wheel, the third wheel cylinder interface 63 is located on the third wheel cylinder branch L61, the third wheel cylinder interface 63 is used for connecting a third brake wheel cylinder 3003 of the vehicle 5000, the third brake wheel cylinder 3003 is disposed at the third wheel for braking the third wheel, the fourth wheel cylinder interface 64 is located on the fourth wheel cylinder branch L62, the fourth wheel cylinder interface 64 is used for connecting a fourth brake wheel cylinder 3004 of the vehicle 5000, and the fourth wheel cylinder interface is disposed at the fourth wheel cylinder 3004 for braking the fourth wheel.
In some embodiments of the present invention, referring to fig. 9, a pressure retaining valve mounting hole 22 is further provided on the hydraulic block body, the pressure retaining valve mounting hole 22 is used for installing a pressure retaining valve, and the pressure retaining valve mounting hole 22 is located on the wheel cylinder braking branch L56. In other words, a pressure-retaining valve for opening or intercepting the wheel cylinder brake branch L56 is installed at the pressure-retaining valve installation hole 22 of the hydraulic block 1. In the embodiment of fig. 1 to 9, the pressure-maintaining valve mounting holes 22 include a first pressure-maintaining valve mounting hole 221, a second pressure-maintaining valve mounting hole 222, a third pressure-maintaining valve mounting hole 223, and a fourth pressure-maintaining valve mounting hole 224, the pressure-maintaining valves include a first pressure-maintaining valve 205, a second pressure-maintaining valve 206, a third pressure-maintaining valve 207, and a fourth pressure-maintaining valve 208, the first pressure-maintaining valve 205 is mounted at the first pressure-maintaining valve mounting hole 221, and the first pressure-maintaining valve 205 is used to open or intercept the first wheel cylinder branch L51, the second pressure-maintaining valve 206 is mounted at the second pressure-maintaining valve mounting hole 222, and the second pressure-maintaining valve 206 is used to open or intercept the second wheel cylinder branch L52, the third pressure-maintaining valve 207 is mounted at the third pressure-maintaining valve mounting hole 223, and the third pressure-maintaining valve 207 is used to open or intercept the third wheel cylinder branch L61, the fourth pressure-maintaining valve 208 is mounted at the fourth pressure-maintaining valve mounting hole 224, and the fourth pressure-maintaining valve 208 is used to open or intercept the fourth wheel cylinder branch L62.
In some embodiments of the utility model, refer to fig. 9, still be equipped with fluid infusion liquid return pipe interface 8 and relief pressure valve mounting hole 21 on the hydraulic block body, fluid infusion liquid return pipe interface 8 is used for connecting brake fluid pot 4003, relief pressure valve mounting hole 21 is used for installing the relief pressure valve, still form fluid infusion liquid return branch road L8 in the hydraulic block body, fluid infusion liquid return branch road L8 is suitable for to be connected with wheel cylinder braking branch road L56, second checking cylinder braking branch road L34 is connected with brake fluid pot 4003 through fluid infusion liquid return branch road L8 realization, fluid infusion liquid return pipe interface 8 and relief pressure valve mounting hole 21 are located fluid infusion liquid return branch road L8. In the embodiment of fig. 9, the pressure reducing valve mounting holes 21 include a first pressure reducing valve mounting hole 2101, a second pressure reducing valve mounting hole 2102, a third pressure reducing valve mounting hole 2103, and a fourth pressure reducing valve mounting hole 2104, the pressure reducing valve includes a first pressure reducing valve 201, a second pressure reducing valve 202, a third pressure reducing valve 203, and a fourth pressure reducing valve 204, the first pressure reducing valve 201 is mounted at the first pressure reducing valve mounting hole 2101, and the first pressure reducing valve 201 is used to communicate or block the fluid-replenishing return branch L8 with the first wheel cylinder branch L51, the second pressure reducing valve 202 is mounted at the second pressure reducing valve mounting hole 2102, and the second pressure reducing valve 202 is used to communicate or block the fluid-replenishing return branch L8 with the second wheel cylinder branch L52, the third pressure reducing valve 203 is mounted at the third pressure reducing valve mounting hole 2103, and the third pressure reducing valve 203 is used to communicate or block the fluid-replenishing return branch L8 with the third wheel cylinder branch L61, the fourth pressure reducing valve 204 is mounted at the fourth pressure reducing valve mounting hole 204 is used to communicate or block the fluid-replenishing return branch L8 with the fourth wheel cylinder branch L62. When the fluid-replenishing fluid-returning branch L8 is communicated with the corresponding wheel cylinder braking branch L56, fluid can be replenished to the wheel cylinder braking branch L56 through the fluid-replenishing fluid-returning branch L8, and excess fluid in the wheel cylinder braking branch L56 can also reach the fluid-replenishing fluid-returning pipe connector 8 through the fluid-replenishing fluid-returning branch L8, and then is recovered to the brake fluid pot 4003.
The brake fluid pot 4003 can be connected at the near end and the far end, is flexible in arrangement position, and can be designed into different sizes according to scheme requirements.
By controlling the on/off of the pressure reducing valve and the pressure retaining valve, more functions can be realized, such as an anti-lock brake system (ABS), an electronic brake force distribution (EBD), a hydraulic brake assist system (HBA), and the like.
In some embodiments of the present invention, referring to fig. 9, the second brake cylinder braking branch L34 is further connected to the fluid infusion return branch L8, so that fluid infusion can be performed on the second brake cylinder braking branch L34 through the fluid infusion return branch L8, and the redundant fluid in the second brake cylinder braking branch L34 can also reach the fluid infusion return pipe interface 8 through the fluid infusion return branch L8, and then be recovered to the brake fluid pot 4003.
In some embodiments of the present invention, referring to fig. 3-4, a support hole 11 is further disposed on the hydraulic block body, a support rod can be installed at the support hole 11, and the support rod is used for supporting the brake fluid pot 4003. Alternatively, the number of the support rods may be plural, for example, three, thereby facilitating the improvement of the support stability of the brake fluid pot 4003.
In some embodiments of the utility model, referring to fig. 1-8, still be equipped with simulator mounting hole 4 on the hydraulic pressure piece body, simulator governing valve mounting hole 25, simulator mounting hole 4 is used for installing footboard stroke simulator 216, simulator governing valve mounting hole 25 is used for installing the simulator governing valve, this internal simulator branch road L7 that forms of hydraulic pressure piece, simulator mounting hole 4 and simulator governing valve mounting hole 25 are located simulator branch road L7, and simulator governing valve mounting hole 25 is located between simulator mounting hole 4 and the oil feed interface 7. When the simulator governor valve is open, the first brake cylinder 2000 oil can enter the simulator branch L7 through the oil inlet port 7, so that when the driver steps on the brake pedal 4001, the pedal stroke simulator 216 can provide pedal force to the driver, thereby obtaining a good pedal feeling. The simulator mounting hole 4 is additionally arranged, so that direct feedback of pedal feeling can be realized, and the power assisting structure of the external first brake cylinder 2000 is reduced. Different braking force curves are designed by modifying the pedal stroke simulator 216 according to different driving styles.
In some embodiments of the utility model, referring to fig. 9, simulator branch road L7 still returns liquid branch road L8 with the fluid infusion and is connected, like this, can return liquid branch road L8 through the fluid infusion and carry out the fluid infusion to simulator branch road L7, and unnecessary fluid in simulator branch road L7 also can return liquid branch road L8 through the fluid infusion and reachs fluid infusion and return liquid pipe interface 8, and then retrieves to brake fluid kettle 4003.
In some embodiments of the present invention, referring to fig. 2, 5-6, simulator modulator valve mounting hole 25 and second brake cylinder mounting hole 5 are opened in the same plane of the hydraulic block body, and simulator modulator valve mounting hole 25 is parallel to the axis of second brake cylinder mounting hole 5. Thus, the external arrangement space of the hydraulic block 1 can be optimized, and the processing technology of the hydraulic block 1 is simplified.
The pressure reducing valve mounting holes 21 and the pressure retaining valve mounting holes 22 are the same in number as the wheels of the vehicle.
In some embodiments of the present invention, the linear valve hole of the hydraulic block 1 for the vehicle brake system is 13, suitable for 4-wheel vehicles, wherein the 13 linear valve holes include 4 pressure reducing valve mounting holes 21, 4 pressure retaining valve mounting holes 22, 2 first brake cylinder isolation valve mounting holes 24,2 second brake cylinder regulating valve mounting holes 23, 1 simulator regulating valve mounting hole 25. That is to say, the utility model discloses hydraulic block 1 is 13 valve hydraulic blocks, and relief pressure valve mounting hole 21 is four, and pressure retaining valve mounting hole 22 is four, and first checking cylinder isolating valve mounting hole 24 is two, and second checking cylinder governing valve mounting hole 23 is two, and simulator governing valve mounting hole 25 is one.
The utility model discloses hydraulic block 1 has cancelled the FDV detection valve mounting hole that is used for installing the FDV detection valve, and the detection oil circuit of FDV detection valve itself and FDV detection valve also cancelled for hydraulic block 1's simple structure, inside flow path simplify. And an FDV detection valve is omitted, so that the number of electromagnetic valves is reduced, the arrangement space of the hydraulic block 1 is increased, and the cost of the hydraulic block 1 is saved. The first brake cylinder 2000 externally connected with the hydraulic block 1 can realize redundancy backup, and can be designed into structures with different cylinder diameters and without assistance according to design requirements.
In some embodiments of the present invention, the linear valve hole of the hydraulic block 1 for the vehicle brake system is 17, suitable for 6-wheel vehicles, wherein the 17 linear valve holes include 6 pressure reducing valve mounting holes 21, 6 pressure retaining valve mounting holes 22, 2 first brake cylinder isolation valve mounting holes 24,2 second brake cylinder regulating valve mounting holes 23, 1 simulator regulating valve mounting hole 25.
In some embodiments of the present invention, the linear valve openings of the hydraulic block 1 for the vehicle braking system are 21, suitable for 8-wheel vehicles, wherein the 21 linear valve openings include 8 pressure reducing valve mounting holes 21, 8 pressure maintaining valve mounting holes 22, 2 first brake cylinder isolation valve mounting holes 24,2 second brake cylinder regulating valve mounting holes 23, 1 simulator regulating valve mounting hole 25.
The utility model discloses an in some embodiments, still be equipped with fast sensor mounting hole 32 of wheel on the hydraulic block body, fast sensor mounting hole 32 of wheel is used for installing the fast sensor of wheel. The sensor mounting holes 3 on the hydraulic block body comprise two pressure sensor mounting holes 31 and two rotating speed sensor mounting holes 32, the first pressure sensor 214 is mounted at one pressure sensor mounting hole 31, the second pressure sensor 217 is mounted at the other pressure sensor mounting hole 31, and the rotating speed sensor 215 is mounted at the rotating speed sensor mounting hole 32.
The utility model discloses an in some embodiments, still be equipped with whole car fixed interface 9, motor interface 10 on the hydraulic block body, motor interface 10 is used for connecting the motor. The motor interface 10 may be a motor three-phase line interface (U, V, W phase).
In some embodiments of the present invention, one of first brake cylinder 2000 and second brake cylinder 4004 is a mechanical brake cylinder and the other is a first piston pump, as shown in fig. 9, first brake cylinder 2000 is a mechanical brake cylinder and second brake cylinder 4004 is a first piston pump. In this case, the first brake cylinder isolation valve is a master cylinder isolation valve, and the second brake cylinder regulator valve is a first piston pump regulator valve. In other embodiments of the present invention (not shown), first brake cylinder 2000 and second brake cylinder 4004 are both first piston pumps. The hydraulic assembly 1000 for the vehicle brake system 4000 according to the embodiment of the second aspect of the present invention may include: a pressure reducing valve, a pressure retaining valve, a second brake cylinder regulating valve, a first brake cylinder isolating valve, a simulator regulating valve, and the above-described hydraulic block 1 for the vehicle brake system 4000.
The utility model discloses an in some embodiments, the relief pressure valve is four, and the pressure retaining valve is four, and first checking jar isolation valve is two, and second checking jar governing valve is two, and the simulator governing valve is one. That is to say, the utility model discloses hydraulic assembly 1000 is 13 valve hydraulic assembly, and at this moment, hydraulic assembly 1000 is applicable to 4 rounds of vehicles, and first group wheel cylinder branch road L5, second group wheel cylinder branch road L6 each include two parallelly connected wheel cylinder branch roads, and hydraulic assembly 1000 has cancelled the FDV check valve, and the detection oil circuit of FDV check valve also is cancelled for hydraulic assembly 1000's simple structure, inside flow path simplifies. The elimination of the FDV detection valve reduces the number of electromagnetic valves, increases the arrangement space of the hydraulic assembly 1000, and saves the cost of the hydraulic assembly 1000. The utility model discloses hydraulic assembly 1000 has cancelled the accumulator, and the break-make through relief pressure valve mounting hole 21, pressure retaining valve mounting hole 22, second brake jar governing valve mounting hole 23, first brake jar isolating valve mounting hole 24 realizes the pressure shock when braking.
In some embodiments of the utility model, the relief pressure valve is six, and the pressure retaining valve is six, and first checking jar isolation valve is two, and second checking jar governing valve is two, and the simulator governing valve is one. That is to say, the utility model discloses hydraulic assembly 1000 is 17 valve hydraulic assembly, and at this moment, hydraulic assembly 1000 is applicable to 6 rounds of vehicles, and first group wheel cylinder branch road L5, second group wheel cylinder branch road L6 each include three wheel cylinder branch roads in parallel.
In some embodiments of the utility model, the relief pressure valve is eight, and the pressure retaining valve is eight, and first checking jar isolation valve is two, and second checking jar governing valve is two, and the simulator governing valve is one. That is to say, the utility model discloses hydraulic assembly 1000 is 21 valve hydraulic assembly, and at this moment, hydraulic assembly 1000 is applicable to 8 rounds of vehicles, and first group wheel cylinder branch road L5, second group wheel cylinder branch road L6 each include four parallelly connected wheel cylinder branch roads.
The pressure reducing valve is installed in a pressure reducing valve installation hole 21 of the hydraulic block 1, and the pressure reducing valve is used for communicating or cutting off a fluid supplementing and returning branch L8 of the hydraulic block 1 and a corresponding wheel cylinder brake branch L56. In the embodiment of fig. 1 to 9, the pressure reducing valve mounting holes 21 include a first pressure reducing valve mounting hole 2101, a second pressure reducing valve mounting hole 2102, a third pressure reducing valve mounting hole 2103, and a fourth pressure reducing valve mounting hole 2104, the pressure reducing valve includes a first pressure reducing valve 201, a second pressure reducing valve 202, a third pressure reducing valve 203, and a fourth pressure reducing valve 204, the first pressure reducing valve 201 is mounted at the first pressure reducing valve mounting hole 2101, and the first pressure reducing valve 201 is used to communicate or block the fluid replenishing return branch L8 with the first wheel cylinder branch L51, the second pressure reducing valve 202 is mounted at the second pressure reducing valve mounting hole 2102, and the second pressure reducing valve 202 is used to communicate or block the fluid replenishing return branch L8 with the second wheel cylinder branch L52, the third pressure reducing valve 203 is mounted at the third pressure reducing valve mounting hole 2103, and the third pressure reducing valve 203 is used to communicate or block the fluid replenishing return branch L8 with the third wheel cylinder branch L61, the fourth pressure reducing valve 204 is mounted at the fourth pressure reducing valve mounting hole 2104, and the fourth pressure reducing valve 204 is used to communicate or block the fluid replenishing return branch L8 with the fourth wheel cylinder branch L62.
The pressure retaining valve is arranged at the pressure retaining valve mounting hole 22 of the hydraulic block 1 and is used for opening or cutting off the wheel cylinder braking branch L56. In the embodiment of fig. 1 to 9, the pressure-retaining valve mounting holes 22 include a first pressure-retaining valve mounting hole 221, a second pressure-retaining valve mounting hole 222, a third pressure-retaining valve mounting hole 223, a fourth pressure-retaining valve mounting hole 224, the pressure-retaining valve includes a first pressure-retaining valve 205, a second pressure-retaining valve 206, a third pressure-retaining valve 207, a fourth pressure-retaining valve 208, the first pressure-retaining valve 205 is mounted at the first pressure-retaining valve mounting hole 221, and the first pressure-retaining valve 205 is used to open or block the first wheel cylinder branch L51, the second pressure-retaining valve 206 is mounted at the second pressure-retaining valve mounting hole 222, and the second pressure-retaining valve 206 is used to open or block the second wheel cylinder branch L52, the third pressure-retaining valve 207 is mounted at the third pressure-retaining valve mounting hole 223, and the third pressure-retaining valve 207 is used to open or block the third wheel cylinder branch L61, the fourth pressure-retaining valve 208 is mounted at the fourth pressure-retaining valve mounting hole 224, and the fourth pressure-retaining valve 208 is used to open or block the fourth wheel branch L62.
A second brake cylinder regulating valve for opening or shutting off the second brake cylinder braking branch L34 is installed at the second brake cylinder regulating valve installation hole 23. In the exemplary embodiment of fig. 1 to 9, the second brake cylinder regulating valve mounting opening 23 comprises a second brake cylinder regulating valve first mounting opening 231 and a second brake cylinder regulating valve second mounting opening 232, the second brake cylinder regulating valve comprises a second brake cylinder first regulating valve 209 and a second brake cylinder second regulating valve 210, the second brake cylinder first regulating valve 209 is mounted at the second brake cylinder regulating valve first mounting opening 231, and the second brake cylinder first regulating valve 209 is used for opening or blocking the third brake branch L3, the second brake cylinder second regulating valve 210 is mounted at the second brake cylinder regulating valve second mounting opening 232, and the second brake cylinder second regulating valve 210 is used for opening or blocking the fourth brake branch L4.
A first brake cylinder isolating valve is mounted at the first brake cylinder isolating valve mounting hole 24 for opening or shutting off the first brake cylinder braking branch L12. In the embodiment of fig. 1-9, first brake cylinder isolation valve mounting bore 24 includes a first brake cylinder isolation valve first mounting bore 241 and a first brake cylinder isolation valve second mounting bore 242, the first brake cylinder isolation valve includes a first brake cylinder first isolation valve 211, a first brake cylinder second isolation valve 212, the first brake cylinder first isolation valve 211 is mounted at the first brake cylinder isolation valve first mounting bore 241, and the first brake cylinder first isolation valve 211 is used to open or block the first brake branch L1, the first brake cylinder second isolation valve 212 is mounted at the first brake cylinder isolation valve second mounting bore 242, and the first brake cylinder second isolation valve 212 is used to open or block the second brake branch L2.
The simulator regulating valve is installed at the simulator regulating valve installation hole 25 of the hydraulic block 1, and the simulator regulating valve is used for opening or cutting off the simulator branch L7 of the hydraulic block 1.
In some embodiments of the present disclosure, hydraulic assembly 1000 has a first operating state in which the second brake cylinder regulating valve is open, the first brake cylinder isolating valve is closed, and the simulator regulating valve is closed; in a second working state, the second brake cylinder regulating valve is closed, the first brake cylinder isolating valve is opened, and the simulator regulating valve is closed; in a third operating state, the second brake cylinder regulating valve is opened, the first brake cylinder isolating valve is closed, and the simulator regulating valve is opened.
When the second brake cylinder 4004 is used for braking, the pressure build-up principle of the hydraulic assembly 1000 is as follows: when the brake pedal 4001 is pressed down, the displacement sensor 4002 detects the displacement of the brake pedal 4001, the first brake cylinder first isolation valve 211 and the first brake cylinder second isolation valve 212 are electrically closed, the second brake cylinder first regulating valve 209 and the second brake cylinder second regulating valve 210 are electrically opened, the second brake cylinder 4004 builds pressure according to the braking depth, and brake fluid enters the brake wheel cylinders to generate braking force, so that the first operating state can be set. The second brake cylinder 4004 is used for pressure building, so that the accurate control of the brake pressure can be realized, and the full decoupling of the brake pedal 4001 can be realized.
During emergency braking, brake fluid enters the brake wheel cylinder through the first brake branch L1 and the second brake branch L2 to generate braking force, and at this time, the second working state may be set.
The third working state is suitable for a normal braking working condition, namely short-time braking during normal running, the simulator regulating valve is opened, brake fluid enters the pedal stroke simulator 216 at the simulator mounting hole 3 through the simulator regulating valve, the pedal stroke simulator 216 is compressed to generate acting force, reaction force generated inside the pedal stroke simulator 216 is transmitted to the brake pedal 4001 through the first brake cylinder braking branch line L12 (for example, through the second braking branch line L2), so that the brake pedal 4001 generates pedal feeling, a motor outside the hydraulic block 1 drives the screw rod to rotate through the planet wheel speed reducing mechanism, so as to drive the second brake cylinder 4004 to move forwards (namely, move towards the direction of generating braking force), and the brake fluid enters the brake cylinder through the second brake cylinder braking branch line L34 to generate braking force. Specifically, when the second brake cylinder 4004 moves forward, the brake fluid enters the first wheel cylinder branch L51 and the second wheel cylinder branch L52 through the third brake branch L3, and enters the third wheel cylinder branch L61 and the fourth wheel cylinder branch L62 through the fourth brake branch L4.
According to the utility model discloses hydraulic unit 100 can external first brake jar 2000 exclusive use, also can not external first brake jar 2000 exclusive use.
Referring to fig. 9, a brake system 4000 of a vehicle 5000 according to an embodiment of the third aspect of the present invention may include: and a brake cylinder, and the hydraulic assembly 1000 for the vehicle brake system 4000 of the above embodiment, the first brake cylinder 2000 has a first brake chamber 2001 and a second brake chamber 2002, the first brake chamber 2001 is connected to the first oil inlet port 71 in the oil inlet port 7, the second brake chamber 2002 is connected to the second oil inlet port 72 in the oil inlet port 7, and the brake cylinder is connected to the brake cylinder port 6.
An axially displaceable first piston 2003 is arranged in first brake cylinder 2000, first piston 2003 dividing the interior of first brake cylinder 2000 into a first brake chamber 2001 and a second brake chamber 2002.
Take the second pressure release to detect as the example, use the utility model discloses a hydraulic assembly 1000 detects when vehicle braking system 4000 leaks, steps on brake pedal 4001 and tests after the idle stroke, and displacement sensor 4002 is used for detecting brake pedal 4001's stroke. Particularly, use the utility model discloses a whether detection principle that hydraulic assembly 1000 detected vehicle braking system 4000 and leaked is: the brake pedal 4001 is firstly stepped on to enable the brake pedal 4001 to cross the idle stroke, so that the first piston 2003 moves to a position for separating the first brake cavity 2001 and the second brake cavity 2002 from the brake fluid pot 4003, then the system is electrified, the first brake cylinder first isolation valve 211, the first brake cylinder second isolation valve 212, the second brake cylinder first regulating valve 209 and the second brake cylinder second regulating valve 210 are electrified and opened, the simulator regulating valve 213 is in a closed state, the first brake cylinder brake branch L12 is communicated with the wheel cylinder brake branch L56, the second brake cylinder brake branch L34 is also communicated with the wheel cylinder brake branch L56, each pressure reducing valve is kept closed, a motor connected with the motor interface 10 drives a planetary gear to rotate, a lead screw is further driven to rotate, and the lead screw drives the second brake cylinder 4004 to move forwards, brake fluid in the brake fluid pot 4003 enters the brake wheel cylinders through the fluid replenishing return branch L8 and the brake branch L34 of the second brake cylinder, the first pressure sensor 214 is used for detecting the pressure of the brake branch L34 of the second brake cylinder, the second pressure sensor 217 is used for detecting the pressure of the brake branch L12 of the first brake cylinder, when the pressure detected by the first pressure sensor 214 and/or the second pressure sensor 217 reaches a target pressure (for example, 3 MPa), the motor stops rotating, the pressure of the second brake cylinder 4004 stops building, meanwhile, the pressure value of the pressure sensor is observed to drop within a preset time period (for example, 30 s), if the pressure value drops or exceeds a preset range, leakage of the whole vehicle brake system 4000 is proved, and if the pressure value does not exceed the preset range, leakage of the whole vehicle brake system 4000 is proved. In this way, the first brake cylinder 2000 and the second brake cylinder 4004 can be simultaneously detected, and when one or both of the first brake cylinder 2000 and the second brake cylinder 4004 is damaged, the system pressure value is reduced.
In some embodiments, when the pressure detected by the first pressure sensor 214 reaches a target pressure, for example, 3 MPa), the motor stops rotating, the second brake cylinder 4004 is pressurized and stopped, and a decrease in the pressure value of the first pressure sensor 214 is observed for a preset time period (for example, 30 s), and if the pressure value decreases, a leak of the entire vehicle brake system 4000 is proved.
The idle stroke refers to a state that the brake chamber is not blocked from the brake fluid pot 4003, when the brake pedal 4001 is stepped on, the first piston 2003 moves, the brake chamber is still communicated with the brake fluid pot 4003, and the brake fluid in the brake chamber can flow back to the brake fluid pot 4003.
And the FDV valve is eliminated, so that the number of electromagnetic valves is reduced, the arrangement space of the hydraulic unit is increased, and the cost of the hydraulic unit is saved.
According to the vehicle 5000 of the fourth aspect of the present invention, the brake system 4000 according to the above embodiment is included.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (18)

1. A hydraulic block for a vehicle brake system is characterized by comprising a hydraulic block body, a first brake cylinder and a second brake cylinder, wherein an oil inlet interface for connecting the first brake cylinder, a second brake cylinder mounting hole for mounting the second brake cylinder, a brake cylinder interface for connecting a brake cylinder, a first brake cylinder isolating valve mounting hole for mounting a first brake cylinder isolating valve, a second brake cylinder regulating valve mounting hole for mounting a second brake cylinder regulating valve and a pressure sensor mounting hole for mounting a pressure sensor are arranged on the hydraulic block body, a first brake cylinder braking branch, a second brake cylinder braking branch and a wheel cylinder braking branch are formed in the hydraulic block body, the second brake cylinder braking branch is suitable for connecting a brake fluid pot, the oil inlet interface and the first brake cylinder isolating valve mounting hole are arranged on the first brake cylinder branch, the second brake cylinder mounting hole and the second brake cylinder regulating valve mounting hole are arranged on the second brake cylinder branch, the brake cylinder braking interface is arranged on the brake branch, one of the first brake cylinder braking branch and the second brake cylinder braking branch are connected with the other brake cylinder braking branch by wire, and the other brake cylinder braking branch is connected with a brake cylinder by wire;
the wheel cylinder braking branch is connected the brake fluid pot, the oil feed interface via the route of wheel cylinder braking branch to brake fluid pot keeps closing, first brake cylinder includes first piston, first piston is in inject the braking chamber in the first brake cylinder, the second brake cylinder includes the second piston, first piston can move about to the braking chamber with the brake fluid pot is isolated, so that when the second piston action pressure boost, first brake cylinder braking branch the second brake cylinder braking branch forms first pressure release and detects the branch road.
2. The hydraulic block for a vehicle braking system according to claim 1, wherein the oil inlet interface comprises a first oil inlet interface, a second oil inlet interface, the first brake cylinder isolation valve mounting hole comprises a first brake cylinder isolation valve first mounting hole and a first brake cylinder isolation valve second mounting hole, the first brake cylinder braking branch comprises a first braking branch and a second braking branch, the first oil inlet interface and the first brake cylinder isolation valve first mounting hole open on the first braking branch, and the second oil inlet interface and the first brake cylinder isolation valve second mounting hole open on the second braking branch.
3. The hydraulic block for a vehicle braking system according to claim 2, wherein the second brake cylinder braking branch includes a third braking branch, a fourth braking branch, and the second brake cylinder regulating valve mounting hole includes a second brake cylinder regulating valve first mounting hole and a second brake cylinder regulating valve second mounting hole, the second brake cylinder regulating valve first mounting hole opening on the third braking branch, and the second brake cylinder regulating valve second mounting hole opening on the fourth braking branch.
4. The hydraulic block for a vehicle braking system according to claim 3, wherein the wheel cylinder braking branch comprises a first set of wheel cylinder branches and a second set of wheel cylinder branches, the first set of wheel cylinder branches comprises a first wheel cylinder branch and a second wheel cylinder branch which are connected in parallel, the second set of wheel cylinder branches comprises a third wheel cylinder branch and a fourth wheel cylinder branch which are connected in parallel, the first braking branch and the third braking branch are both connected with the first set of wheel cylinder branches, and the second braking branch and the fourth braking branch are both connected with the second set of wheel cylinder branches.
5. The hydraulic block for a vehicle brake system according to any one of claims 1 to 4, wherein a pressure retaining valve mounting hole for mounting a pressure retaining valve is further provided on the hydraulic block body, and the pressure retaining valve mounting hole is located on the wheel cylinder brake branch.
6. The hydraulic block for the vehicle brake system according to claim 5, wherein a fluid supplementing return pipe joint for connecting the brake fluid pot and a pressure reducing valve mounting hole for mounting a pressure reducing valve are further formed on the hydraulic block body, a fluid supplementing return branch is further formed in the hydraulic block body, the fluid supplementing return branch is suitable for being connected with the wheel cylinder brake branch, the second brake cylinder brake branch is connected with the brake fluid pot through the fluid supplementing return branch, and the fluid supplementing return pipe joint and the pressure reducing valve mounting hole are located on the fluid supplementing return branch;
when the pressure reducing valves are kept closed, the first brake cylinder braking branch, the second brake cylinder braking branch and the wheel cylinder braking branch form a second pressure relief detection branch with the first pressure relief detection branch.
7. The hydraulic block for the vehicle braking system according to claim 6, wherein a simulator mounting hole for mounting a pedal stroke simulator and a simulator regulating valve mounting hole for mounting a simulator regulating valve are further formed in the hydraulic block body, a simulator branch is formed in the hydraulic block body, the simulator mounting hole and the simulator regulating valve mounting hole are located on the simulator branch, and the simulator regulating valve mounting hole is located between the simulator mounting hole and the oil inlet port;
when the simulator regulating valve is closed, the first brake cylinder braking branch, the second brake cylinder braking branch and the wheel cylinder braking branch form the second pressure relief detection branch.
8. The hydraulic block for a vehicle brake system according to claim 7, wherein the simulator modulator valve mounting hole and the second brake cylinder mounting hole open in the same plane of the hydraulic block body, and the simulator modulator valve mounting hole is parallel to an axis of the second brake cylinder mounting hole.
9. The hydraulic block for a vehicle brake system according to claim 7, wherein the pressure reducing valve mounting holes and the pressure retaining valve mounting holes are each the same as the number of wheels of a vehicle;
the number of the linear valve holes of the hydraulic block for the vehicle brake system is 13, wherein the 13 linear valve holes comprise 4 pressure reducing valve mounting holes, 4 pressure retaining valve mounting holes, 2 first brake cylinder isolation valve mounting holes, 2 second brake cylinder regulating valve mounting holes and 1 simulator regulating valve mounting hole;
or, the number of linear valve holes of the hydraulic block for the vehicle brake system is 17, wherein the 17 linear valve holes include 6 pressure reducing valve mounting holes, 6 pressure retaining valve mounting holes, 2 first brake cylinder isolating valve mounting holes, 2 second brake cylinder regulating valve mounting holes, and 1 simulator regulating valve mounting hole;
or, be used for the linear valve hole of vehicle braking system's hydraulic block 21, wherein, 21 linear valve hole includes 8 relief valve mounting hole, 8 pressure retaining valve mounting hole, 2 first brake cylinder isolating valve mounting hole, 2 second brake cylinder governing valve mounting hole, 1 simulator governing valve mounting hole.
10. The hydraulic block for a vehicle brake system according to claim 1, wherein a wheel speed sensor mounting hole for mounting a wheel speed sensor is further provided on the hydraulic block body.
11. The hydraulic block for a vehicle braking system according to claim 1, wherein a complete vehicle fixing interface and a motor interface for connecting a motor are further provided on the hydraulic block body.
12. The hydraulic block for a vehicle braking system according to claim 1, wherein one of the first brake cylinder and the second brake cylinder is a mechanical brake cylinder and the other is a first piston pump; or, the first brake cylinder and the second brake cylinder are both a first piston pump.
13. The hydraulic block for a vehicle braking system according to claim 12, wherein the first brake cylinder is separate from the second brake cylinder and the oil inlet port is an oil inlet pipe port.
14. The hydraulic block for a vehicle brake system according to claim 1, wherein the first piston divides the brake chamber into a first brake chamber and a second brake chamber, and a brake pedal is connected to the first piston.
15. A hydraulic assembly for a vehicle braking system, comprising:
a hydraulic block for a vehicle brake system as claimed in any one of claims 1 to 14;
the pressure reducing valve is arranged at a pressure reducing valve mounting hole of the hydraulic block and is used for communicating or cutting off a liquid supplementing and returning branch of the hydraulic block and a corresponding wheel cylinder braking branch;
the pressure retaining valve is arranged at a pressure retaining valve mounting hole of the hydraulic block and is used for opening or cutting off the wheel cylinder braking branch;
a second brake cylinder regulating valve mounted at the second brake cylinder regulating valve mounting hole, the second brake cylinder regulating valve for opening or shutting off the second brake cylinder braking branch;
a first brake cylinder isolation valve mounted at the first brake cylinder isolation valve mounting hole, the first brake cylinder isolation valve for opening or interrupting the first brake cylinder braking branch;
the simulator regulating valve is installed at a mounting hole of the simulator regulating valve of the hydraulic block and used for opening or cutting off a simulator branch of the hydraulic block.
16. The hydraulic assembly for a vehicle braking system according to claim 15, wherein the hydraulic assembly has a first operating state in which the second brake cylinder regulating valve is open, the first brake cylinder isolating valve is closed, and the simulator regulating valve is closed, a second operating state in which the second brake cylinder regulating valve is closed, the first brake cylinder isolating valve is open, and the simulator regulating valve is closed, and a third operating state in which the second brake cylinder regulating valve is open, the first brake cylinder isolating valve is closed, and the simulator regulating valve is open.
17. A braking system for a vehicle, comprising:
the hydraulic assembly for a vehicle braking system of claim 15 or 16, said first brake cylinder having a first brake chamber and a second brake chamber, said first brake chamber connected to a first of said oil feed interfaces, said second brake chamber connected to a second of said oil feed interfaces;
and the brake wheel cylinder is connected with the brake wheel cylinder interface.
18. A vehicle comprising the braking system of claim 17.
CN202222919114.9U 2022-10-31 2022-10-31 Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle Active CN218616613U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222919114.9U CN218616613U (en) 2022-10-31 2022-10-31 Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222919114.9U CN218616613U (en) 2022-10-31 2022-10-31 Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle

Publications (1)

Publication Number Publication Date
CN218616613U true CN218616613U (en) 2023-03-14

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Family Applications (1)

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CN202222919114.9U Active CN218616613U (en) 2022-10-31 2022-10-31 Hydraulic block for vehicle brake system, hydraulic assembly, brake system and vehicle

Country Status (1)

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CN (1) CN218616613U (en)

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