CN109552287A - Line control brake system and vehicle - Google Patents
Line control brake system and vehicle Download PDFInfo
- Publication number
- CN109552287A CN109552287A CN201710885196.0A CN201710885196A CN109552287A CN 109552287 A CN109552287 A CN 109552287A CN 201710885196 A CN201710885196 A CN 201710885196A CN 109552287 A CN109552287 A CN 109552287A
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- Prior art keywords
- brake
- pedal
- controller
- line control
- brake system
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/26—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Braking Arrangements (AREA)
Abstract
The disclosure provides a kind of line control brake system and vehicle, the line control brake system includes pedal signal collector, controller, hydraulic system, hydraulic control unit, two dynamo-electric brakes, two liquid braking devices, the dynamo-electric brake is front wheel brake, and the liquid braking device is rear wheel brake；Or, the dynamo-electric brake is rear wheel brake, the liquid braking device is front wheel brake, the controller is used to control the dynamo-electric brake according to the collected pedal signal of the pedal signal collector, and the hydraulic control unit is used to control the hydraulic coupling that the hydraulic system is supplied to the liquid braking device according to the pedal signal.The line control brake system is simple for structure, suitable for arranging on vehicle.
Description
Technical field
This disclosure relates to motor vehicle braking system, and in particular, to a kind of line control brake system and vehicle.
Background technique
Line control brake system abbreviation BBW, that is, electrically controlled brake system, be divided into mechanical line control brake system abbreviation EMB and
Two kinds of EHB of fluid pressure type line control brake system abbreviation.If EHB is called the BBW system of " wet type ", EMB is exactly " dry type "
BBW system.The difference of the two is that EMB does not use brake fluid and hydraulic unit, and braking moment is completely by being mounted on 4 vehicles
Motor drive actuator on wheel is realized, and EHB is the braking system between conventional hydraulic braking system and EMB, is
One transition system.
Mechanical line control brake system abbreviation EMB is completely different with traditional brake fluid system.Traditional hydraulic braking
System Development has been highly developed technology so far.With the continuous improvement that people require braking ability, anti-skid braking system
The functions such as system ABS, traction control system TCS, electronic stability control program ESP, active collision avoidance technology ACC are gradually dissolved into
In braking system, more and more additional mechanism providing additional operations are installed in brake line, this makes brake system structure more complicated, are also increased
The difficulty of the hidden danger and assembly, maintenance that have added hydraulic circuit to leak.Therefore the mechanical line that structure is simpler, function is more reliable
The common recognition that traditional brake fluid system has become automobile industry is finally replaced in control braking system.
EHB system is developed on the basis of traditional brake fluid system.Have with traditional brake fluid system
Institute is different, and it is an advanced electro-mechanical system that EHB, which substitutes some mechanical element with electronic component,.One synthesis of EHB
Brake module replaces the pressure regulator and ABS module in conventional brake, this synthetical restraint module can produce and store
Brake pressure, can the braking moment to four wheels individually adjusted.EHB system has conventional hydraulic braking system can not
The superiority of analogy, but EHB system still uses electrichydraulic control mode, is not in a strict sense pure brake-by-wire system
System, but compared with EMB system, EHB system is more mature in current techniques, thus has splendid development prospect in a short time.
Summary of the invention
Purpose of this disclosure is to provide a kind of line control brake systems simple for structure, suitable for arranging on vehicle.
To achieve the goals above, the one side of the disclosure provides a kind of line control brake system, including pedal signal acquisition
Device, controller, hydraulic system, hydraulic control unit, two dynamo-electric brakes, two liquid braking devices,
The dynamo-electric brake is front wheel brake, and the liquid braking device is rear wheel brake；Alternatively, the electronic system
Dynamic device is rear wheel brake, and the liquid braking device is front wheel brake,
The controller is used to control the electrodynamic braking according to the collected pedal signal of the pedal signal collector
Device, the hydraulic control unit are supplied to the liquid braking device for controlling the hydraulic system according to the pedal signal
Hydraulic coupling.
Optionally, the pedal signal collector includes pedal displacement sensor and/or pedal force sensor.
Optionally, the line control brake system further includes whole vehicle state collector, and the controller according to for stepping on
Described in the collected pedal signal of partitioned signal collector and the collected whole vehicle state signal control of the whole vehicle state collector
Dynamo-electric brake.
Optionally, the whole vehicle state collector includes longitudinal acceleration sensor, lateral acceleration sensor, yaw angle
One or more of velocity sensor, steering wheel angle sensor and wheel speed sensors.
Optionally, the controller includes central controller and the first controller, the central controller respectively with it is described
Hydraulic control unit and the electrical connection of the first controller, first controller is for controlling the dynamo-electric brake, the center
Controller receives the pedal signal and receives the whole vehicle state signal by In-vehicle networking.
Optionally, the system comprises electronic pedal, which includes brake pedal, pedal simulator, pedal mould
Quasi- device controller and the pedal signal collector, the pedal signal collector are electrically connected with the pedal simulator controller
It connects, the pedal simulator controller is electrically connected with the central controller.
Optionally, the pedal simulator controller is also electrically connected with the hydraulic control unit and the first controller respectively
It connects.
Optionally, the dynamo-electric brake is disk brake, which includes braking clamp body, the first braking
Block, motor, retarder and screw body, the motor are external rotor electric machine, and the stator of the motor, which has, to be axially extended
Cavity, the screw body includes screw rod and the nut that is sleeved on the screw rod, and the screw rod runs through the cavity, described
The rotor of motor drives the screw rod rotation by the retarder, so that the nut is moved axially along the screw rod, thus
Push first brake block mobile to compress brake disc.
Optionally, the disk brake is disc brake with floating caliper, and the disk brake further includes the second brake block,
First brake block and the second brake block are located at the brake disc two sides, and second brake block is mounted on the braking
On caliper.
Optionally, the disk brake further includes electromagnetic clutch, when electromagnetic clutch power-off, the electromagnetism
Clutch engagement, by a shaft locking of the retarder；When the electromagnetic clutch is powered, the electromagnetic clutch
Separation, the shaft is discharged.
Optionally, the electromagnetic clutch includes electromagnet, translational friction piece and rotary friction pad, and the electromagnet includes
Fixed core, dynamic iron core and the driving spring for acting on the dynamic iron core, the rotary friction pad are connect with the shaft, described flat
Moving friction plate can be driven by the dynamic iron core.
Optionally, the electromagnetic clutch further includes clutch housing, outer race and inside race, the inside race with it is described
The connection of shaft spline, the rotary friction pad are arranged on the inside race, and the outer race is interior with the clutch housing
The connection of wall spline, the clutch housing are fixed relative to the braking clamp body, and the translational friction piece is arranged in the outer seat
On circle.
Optionally, the retarder is that beat bores poor planetary reduction gear, and the rotor of the motor and the beat bore poor row
The ring gear of star retarder is connected, and the output shaft that the beat bores poor planetary reduction gear is connected with the screw rod, and the shaft is
The beat bores the input shaft of poor planetary reduction gear.
Optionally, the disk brake further includes piston, and the piston is slidably fitted in one end of the cavity, described
The other end of the cavity is arranged in retarder, and the nut pushes first brake block mobile by the piston.
Lack through the above technical solutions, the disclosure is made to be capable of providing a kind of be mechanically connected, it is simple for structure, it is small in size, easily
In arranging on vehicle, and it can be effectively reduced the line control brake system of complete vehicle quality.
Another aspect of the present disclosure provides a kind of vehicle, including line control brake system recited above.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is the schematic illustration according to the line control brake system of an embodiment of the present disclosure；
Fig. 2 is the cross-sectional view of dynamo-electric brake；
Fig. 3 is the partial enlarged view of Fig. 2；
Fig. 4 is the structural schematic diagram that beat bores poor planetary reduction gear；
Fig. 5 is the structural schematic diagram of electromagnetic clutch.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
According to one aspect of the disclosure, a kind of line control brake system, including electronic pedal 200, hydraulic system, liquid are provided
Press 910, two liquid braking devices 410 of control unit, controller, two dynamo-electric brakes 420.
Electronic pedal 200 includes brake pedal 210, pedal simulator 220 and pedal signal collector 230.Pedal simulation
Device 220 provides pedal sense (pedal reaction force and pedal travel) similar with Conventional braking systems for driver, can be by
Brake operating is carried out according to oneself habit and experience.The manipulation that pedal signal collector 230 is used to monitor driver is intended to, can be with
Using pedal displacement sensor or pedal force sensor, can also both use simultaneously, to avoid single type sensor common-mode
The influence of failure, is conducive to fault diagnosis.
Two liquid braking devices 410 can be two front wheel brakes, or two rear wheel brakes.Namely
It says, two liquid braking devices 410 can be used for braking two front-wheels 510, can be used for two rear-wheels 520 of braking.When two
When liquid braking device 410 is two front wheel brakes, two dynamo-electric brakes 420 are two rear wheel brakes；When two it is hydraulic
When brake 410 is two rear wheel brakes, two dynamo-electric brakes 420 are two front wheel brakes.
Pedal signal collector 230 is by collected pedal signal (for example, pedal acceleration, pedal displacement, pedal force are big
It is small etc.) it is transferred to controller and hydraulic control unit 910, controller controls dynamo-electric brake 420 according to the pedal signal and generates
Corresponding brake force；Hydraulic control unit 910 controls the liquid that hydraulic system is supplied to liquid braking device 410 according to the pedal signal
Pressure, so that liquid braking device 410 generates corresponding brake force.
Lack through the above technical solutions, the disclosure is made to be capable of providing a kind of be mechanically connected, it is simple for structure, it is small in size, easily
In arranging on vehicle, and it can be effectively reduced the line control brake system of complete vehicle weight.
In the disclosure, in order to improve braking stationarity and safety, the line control brake system can also include vehicle
State acquisition device 800, controller are also used to control intermediate electricity according to the collected whole vehicle state signal of whole vehicle state collector 800
Machine.That is, controller should receive the collected pedal signal of pedal signal collector 230, whole vehicle state is received again
The collected whole vehicle state signal of collector 800, these comprehensive signals calculate each wheel respectively real-time required best system
Power reaches optimal braking effect.Specifically, controller can by In-vehicle networking (for example, TTP/C network, CAN network,
Flex ray network etc.) receive whole vehicle state collector 800 signal.
Here, whole vehicle state collector 800 may include longitudinal acceleration sensor, lateral acceleration sensor, sideway
One or more of angular-rate sensor, steering wheel angle sensor and wheel speed sensors.Correspondingly, whole vehicle state signal can
To include in longitudinal acceleration signal, transverse acceleration signal, yaw rate signal, steering wheel angle signal and wheel speed signal
One of or more persons.
Specifically, hydraulic system may include oil storage cup 920, the electric hydraulic pump 930, accumulation of energy being connected by fluid pressure line
Device 950, check valve 940 etc..Hydraulic control unit 910 may include electronic control unit and multiple solenoid valves, and electronic control is single
Member is for controlling electric hydraulic pump and solenoid valve, so that hydraulic system exports corresponding hydraulic coupling to liquid braking device 410.
In the disclosure, controller can be one, or multiple.In order to improve braking response speed, controller
It may include central controller 310 and the first controller 320, wherein the first controller 320 is used to control dynamo-electric brake 420,
Central controller 310 is electrically connected with the first controller 320 and hydraulic control unit 910 respectively.Central controller 310 receives pedal
Signal simultaneously receives whole vehicle state signal by In-vehicle networking, for determining driver intention or judging Full Vehicle Dynamics state,
And control signal is sent to the first controller 320 and hydraulic control unit 910.First controller 320 receives central controller 310
Control signal, control dynamo-electric brake 420 generate corresponding brake force.Hydraulic control unit 910 receives central controller
310 control signal, the hydraulic coupling that control hydraulic system is exported to liquid braking device 410, so that liquid braking device 410 generates phase
The brake force answered.
Optionally, electronic pedal 200 can also include the pedal simulator for the motor in control pedal simulator 220
Controller 240, pedal signal collector 230 are electrically connected with pedal simulator controller 240, pedal simulator controller 240 with
Central controller 310 is electrically connected, and the collected pedal signal of pedal signal collector 230 can pass through pedal simulator controller
240 are transmitted to central controller 310.It should be noted that can also be by pedal signal collector 230 and central controller 310
It is directly electrically connected, so that pedal signal is directly transferred to central controller 310.
Further, pedal simulator controller 240 can also respectively with the first controller 320 and hydraulic control unit
910 electrical connections, so that pedal signal can be transmitted to the first controller 320 and hydraulic control by pedal simulator controller 240
Unit 910 processed.In this way, so that braking system can also complete the system on basis when central controller 310 breaks down
Dynamic function, improves braking safety.
Specifically, the line control brake system can also include for dynamo-electric brake 420, central controller 310,
The power supply 600 that one controller 320, hydraulic control unit 910, electronic pedal 200 and whole vehicle state collector 800 are powered.It is attached
Icon note 700 represents power interface.
The course of work of the line control brake system according to an embodiment of the present disclosure is briefly described below in conjunction with Fig. 1.
After driver's brake pedal, pedal acceleration, displacement and pedal are detected by pedal signal collector
The brake command signals such as the size of power (that is, pedal signal), central controller receive brake command signal by In-vehicle networking, and
The signal of other sensors (that is, whole vehicle state collector) under comprehensive current vehicle driving status calculates each wheel respectively
Optimum braking force required in real time, and control signal is sent to the first controller and hydraulic control unit.First controller according to
The control signal control dynamo-electric brake received generates corresponding brake force.Hydraulic control unit is believed according to the control received
The hydraulic coupling exported to liquid braking device number is controlled, so that liquid braking device generates corresponding brake force.
In the disclosure, used liquid braking device can have any suitable structure, and the disclosure does not limit this
System.
In the disclosure, used dynamo-electric brake 420 can have any suitable structure.In a kind of embodiment
In, as shown in Figures 2 to 4, the dynamo-electric brake 420 can be disk brake, and make including braking clamp body 10, first
Motion block 31, motor 40, retarder 50 and screw body 60.First brake block 31 and the second brake block 32 are located at braking
The two sides of disk 20.Motor 40 is external rotor electric machine, and the stator 41 of motor 40 is formed with the cavity 411 axially extended.Screw rod machine
Structure 60 includes screw rod 61 and the nut 62 being sleeved on screw rod 61, and screw rod 61 runs through cavity 411, and the rotor 42 of motor 40 is by subtracting
Fast device 50 drives screw rod 61 to rotate, so that nut 62 is moved axially along screw rod 61, to push the first brake block 31 mobile and press
It comes in brake disc 20.
In above-mentioned disk brake, by the way that screw body to be integrated in the inside of motor, the axial direction of brake is reduced
Length, so that brake structural is more compact, occupied space is smaller, convenient for the mounting arrangements on vehicle.
Above-mentioned disk brake can be disc brake with fixed caliper, or disc brake with floating caliper.
In the case where above-mentioned disk brake is disc brake with floating caliper, which further includes the second brake block
32, which is mounted on braking clamp body 10, and braking clamp body 10 can be moved axially relative to brake disc 20.Specifically
Ground, as shown in Figures 2 and 3, when executing service brake, the rotor 42 of motor 40 drives screw rod 61 to rotate by retarder 50, with
It is moved to the left nut 62 along screw rod 61, so that the first brake block 31 is pushed also to be moved to the left and be pressed in brake disc 20, in
It is brake disc 20 to the reaction force of 62 1, nut to the right, nut 62 is made to move right together with braking clamp body 10 is whole, until
Second brake block 32 also presses against in brake disc 20.At this moment the brake block 31,32 of two sides is all pressed in brake disc 20, to clamp
Brake disc 20 generates the moment of friction for preventing vehicle wheel rotation, realizes service brake.
Optionally, screw body 60 can be rolling lead screw mechanism.Using rolling lead screw mechanism, nut 62
Rolling element, such as ball or roller are provided between screw rod 61.Further, screw body 60 can be planetary roller screw rod
Mechanism.Compared to other screw bodies, planetary roller screw body big, strong shock resistance, transmission accuracy with receiving load
The advantages of height, long service life.
In addition, also optionally, screw body 60 can be ball wire rod mechanism.Using the beneficial effect of ball wire rod mechanism
It is similar with the above-mentioned effect using planetary roller screw rod, herein in order to avoid repeating, omit its description.But the disclosure is not
It is defined in this, screw body 60 can also be using sliding screw mechanism etc..When using sliding screw mechanism, screw pair can be made
Lead angle be greater than Self-locking angle, to guarantee that it is self-locking that screw pair will not occur, thus release braking when can pass through brake disc
The return of nut is realized to the active force of brake block.
In one embodiment, above-mentioned disk brake can also include piston 90, which is slidably fitted in sky
One end of chamber 411, retarder 50 are arranged in the other end of cavity 411 and are connected with screw rod 61, and nut 62 is pushed by piston 90
First brake block 31 is mobile.In this embodiment, piston 90 separates the inside of cavity 411 with the external world, so that screw rod machine
Structure 60 is in a relatively closed environment, avoids the erosion by outside water, impurity, and extend brake uses the longevity
Life.
In order to avoid the movement to piston 90 forms resistance, piston 90 can be with 411 clearance fit of cavity, that is to say, that
The diameter of cavity 411 can be slightly larger than the diameter of piston 90.It in this case, can be in piston 90 in order to guarantee leakproofness
Sealing ring 100 is set between the inner wall of cavity 411.
Here, nut 62 can be fixed together by the modes and piston 90 such as being spirally connected, welding, be glued.However, in order to keep away
Exempt to generate stress concentration in junction, in one embodiment, nut 62 is not connected to piston 90, when executing service brake,
Nut 62 pushes piston 90 mobile, and piston 90 pushes the first brake block 31 to be pressed in brake disc 20 again.Piston 90 can be in one
End seal closes the open tubular structure of the other end, and the inner wall clearance fit in piston 90 and with piston 90 can be set in nut 62,
When executing service brake, the thrust of nut 62 is in the closed end of piston 90 to push piston 90 mobile towards brake disc 20.
In other embodiments, nut 62 can also directly drive the movement of the first brake block 31, without piston is arranged
90。
Optionally, thrust bearing 70 can be installed on screw rod 61.In one embodiment, it is formed on screw rod 61 convex
Edge, thrust bearing 70 are arranged between flange and the shell of retarder 50.When brake block clamps brake disc 20, retarder 50
Shell applies axial force to screw rod 61 by thrust bearing 70 with balanced system Moving plate 20 to the reaction force of screw rod 61, guarantees screw rod
61 stress balances.
In the disclosure, retarder 50 can use the retarder of any suitable type, as long as can be by the defeated of motor 40
Torque reduction passes to screw rod 61 after increasing square out.In one embodiment, retarder 50 can bore poor planet for beat
Retarder.
Fig. 4 is the structural schematic diagram that beat bores poor planetary reduction gear, mainly by rotating bevel gear 1, beat bevel gear 2, defeated
Enter the compositions such as beat generator H and the circumferential limitation pair on axis 5.Wherein beat generator H has drift angle by the end of input shaft 5
The spindle nose 6 and tapered roller bearing 7 of Σ is constituted.Bevel gear 2 is equivalent to an internal bevel gear, with the cone tooth on output shaft 9
1 composition internal messing of wheel, one end of beat bevel gear 2 is on the tapered roller bearing 7 at drift angle spindle nose 6, other end spherical surface
Bearing 8 is connect with the shaft end of output shaft 9 composition flexural pivot.The vertex of a cone of two bevel gears is overlapped with the center O point of spherical bearing, in beat
The outer rim of bevel gear 2 is equipped with cydariform outer gear ring 3, circumferentially limits pair with 4 groups of ring gear.
Beat bores the transmission principle of poor planetary reduction gear are as follows: when input shaft 5 drives drift angle spindle nose 6 around the fixing axle of input shaft
When line nn is rotated, the axes O O of drift angle spindle noseHJust forming a cone-apex angle is 2 Σ cone-beam spaces.Due on drift angle spindle nose 6
The constraint secondary by circumferential limitation of beat bevel gear 2, turnover movement cannot be done, this cone-beam movement of drift angle spindle nose just forces
Beat bevel gear 2 makees circulation beat movement around O point, forms engaging for circulation folding with the rotating bevel gear 1 on output shaft 9
State.In shown position, two bevel gears top is in full meshing state, and forms full disengaged condition in lower part.But when drift angle turns over
180 ° to position A ' when, two bevel gears lower part is in full meshing state, and top is in full disengaged condition.When drift angle spindle nose turns over again
180 ° when being returned to original position, are exactly completed a beat engagement circulation.The process that spindle nose is rotated around fixed axis nn in drift angle
In, the gear teeth of beat bevel gear are along the circumferential direction recycled into and exit engagement, make region of engagement along the pitch cone of output bevel gear wheel
Transfer.
In the case where boring poor planetary reduction gear using beat, the rotor 42 of motor 40 with poor planetary reduction gear can be bored with beat
The ring gear 4 of device is connected, and the output shaft 9 that beat bores poor planetary reduction gear can be connected with screw rod 61, and electromagnetic clutch 8 is mounted on
Beat is bored on the input shaft 5 of poor planetary reduction gear.That is, ring gear 4 bores the input terminal of poor planetary reduction gear as beat,
Output shaft 9 bores the output end of poor planetary reduction gear as beat.
In the disclosure, in order to make brake while there is parking braking function, in one embodiment, such as Fig. 2 and
Shown in Fig. 5, the brake can also include electromagnetic clutch 80, which is mounted on one turn of retarder 50
On axis, the locking to retarder 50 is realized by shaft described in 80 locking of electromagnetic clutch, to realize parking braking.Example
Such as, when retarder 50 bores poor planetary reduction gear using beat as described above, it is poor that electromagnetic clutch 8 may be mounted at beat cone
The input shaft 5 of planetary reduction gear, and being capable of the locking input shaft 5.
Specifically, when 80 power loss of electromagnetic clutch, electromagnetic clutch 80 is engaged with a shaft of locking retarder 50,
So that retarder 50 is locked up, so that screw rod 61 be made not to be able to rotate, keep nut 62 immovable, and then keeps to the first brake block
31 thrust realizes parking braking.When electromagnetic clutch obtains it is electric when, electromagnetic clutch separate to discharge retarder 50, parking system
It is dynamic to release.
Optionally, electromagnetic clutch 80 may include clutch housing 81, electromagnet, translational friction piece 85, spin friction
Piece 86, outer race 87 and inside race 88.Wherein, clutch housing 81 is fixed relative to braking clamp body 10, and electromagnet may include
Fixed core 82, dynamic iron core 83 and the driving spring 84 for acting on dynamic iron core 83.One shaft of inside race 88 and retarder 50 is logical
Spline slide connection is crossed, rotary friction pad 86 is arranged on inside race 88 can rotate under the drive of the shaft.Outer seat
Circle 87 is connect with the inner wall of clutch housing 81 by spline slide, and the setting of translational friction piece 85 is on outer race 87 with being capable of edge
The axial translation of the shaft.Fixed core 82 and dynamic iron core 83 can be formed as cyclic structure, and dynamic iron core 83 is set in institute
The outside of shaft is stated, fixed core 82 is set in the outside of dynamic iron core 83, so that the more compact structure of brake, axial dimension is more
It is small.When electromagnet power loss, the magnetic attraction between fixed core 82 and dynamic iron core 83 disappears, work of the dynamic iron core 83 in driving spring 84
It moves right under, and translational friction piece 85 and rotary friction pad 86 is pushed to engage, frictional force between the two makes retarder
50 shaft is by locking；When electromagnet obtains it is electric when, magnetic attraction is generated between fixed core 82 and dynamic iron core 83, so that dynamic iron core
Compressible drive spring 84 while 83 reset, translational friction piece 85 and rotary friction pad 86 separate, and frictional force between the two disappears
It loses to lose locking power.
In general, when needing to be implemented parking braking function, motor 40 must be electric, and passes sequentially through retarder 50 and drive screw rod
61 rotations, to make nut 62 that brake block be pushed to clamp brake disc 20, (for example, parking brake force reaches when reaching parking requirement
Target braking force, and parking brake force increases to the time used in target braking force less than preset time from zero), motor 40 loses
Electricity, the work of electromagnetic clutch 80 keep parking brake force with the shaft of locking retarder 50, locking retarder 50, execute
Parking braking function.When releasing parking braking, electromagnetic clutch 80 loses locking power, discharges the shaft, releases to retarder
50 locking.
Optionally, retarder 50 can be set between motor 40 and electromagnetic clutch 80, so that brake structural is tight
It gathers, shape rule.
In one embodiment, motor 40, retarder 50 and electromagnetic clutch 80 can be contained in same housing 110
Interior, which can be for example fixed together by fastener with braking clamp body 10, and clutch housing 81 can be fixed on shell
In body 110.
According to another aspect of the present disclosure, a kind of vehicle is provided, which uses line control brake system as described above.
In conclusion the line control brake system of the disclosure has the advantage that one, hydraulic brake line quantity is reduced, it can
Complete vehicle quality is effectively reduced, it is simple for structure, it is small in size, it is easy to arrange；Two, using being mechanically and electrically, signal transmitting is rapid,
Braking response is fast, is quick on the draw；Three, transmission efficiency is high, saves the energy；Four, electronic intelligence control function is powerful, can be by repairing
Change the software program in controller, configures relevant parameter to realize the electric control function of the complexity such as ABS, TCS, ESC, ACC, and
It is easy to and the new-energy automobile with brake energy recovering system is matched；Five, whole system can use modular construction,
Assembly is simple, easy to maintenance；Six, using electronic pedal, mechanically and hydraulically connecting for brake pedal and brake actuator is eliminated
It connects, on the one hand, when executing the movement such as ABS, brake pedal does not have rebound vibration, improves braking comfort, on the other hand,
When vehicle collides, impact force will not be passed in driver's cabin by braking system, improve the passive safety of automobile.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (15)
1. a kind of line control brake system, which is characterized in that including pedal signal collector (230), controller, hydraulic system, liquid
Control unit (910), two dynamo-electric brakes (420), two liquid braking devices (410) are pressed,
The dynamo-electric brake (420) is front wheel brake, and the liquid braking device (410) is rear wheel brake；Alternatively, described
Dynamo-electric brake (420) is rear wheel brake, and the liquid braking device (410) is front wheel brake,
The controller is used to control the electrodynamic braking according to the collected pedal signal of the pedal signal collector (230)
Device (420), the hydraulic control unit (910), which is used to control the hydraulic system according to the pedal signal, is supplied to the liquid
Press the hydraulic coupling of brake (410).
2. line control brake system according to claim 1, which is characterized in that the pedal signal collector (230) includes
Pedal displacement sensor and/or pedal force sensor.
3. line control brake system according to claim 1, which is characterized in that the line control brake system further includes vehicle shape
State collector (800), the controller are used for according to the collected pedal signal of the pedal signal collector (230) and described
The collected whole vehicle state signal of whole vehicle state collector (800) controls the dynamo-electric brake (420).
4. line control brake system according to claim 3, which is characterized in that the whole vehicle state collector (800) includes
Longitudinal acceleration sensor, lateral acceleration sensor, yaw-rate sensor, steering wheel angle sensor and wheel speed sensing
One or more of device.
5. line control brake system according to claim 3, which is characterized in that the controller includes central controller
(310) it is controlled respectively with the hydraulic control unit (910) and first with the first controller (320), the central controller (310)
Device (320) electrical connection processed, first controller (320) is for controlling the dynamo-electric brake (420), the central controller
(310) it receives the pedal signal and the whole vehicle state signal is received by In-vehicle networking.
6. line control brake system according to claim 5, which is characterized in that the system comprises electronic pedal (200), should
Electronic pedal (200) includes brake pedal (210), pedal simulator (220), pedal simulator controller (240) and described steps on
Partitioned signal collector (230), the pedal signal collector (230) are electrically connected with the pedal simulator controller (240), institute
Pedal simulator controller (240) is stated to be electrically connected with the central controller (310).
7. line control brake system according to claim 6, which is characterized in that the pedal simulator controller (240) is also
It is electrically connected respectively with the hydraulic control unit (910) and the first controller (320).
8. line control brake system according to claim 1, which is characterized in that the dynamo-electric brake (420) is disc type system
Dynamic device, which includes braking clamp body (10), the first brake block (31), motor (40), retarder (50) and screw rod
Mechanism (60), the motor (40) are external rotor electric machine, and the stator (41) of the motor (40) has the cavity axially extended
(411), the screw body (60) includes screw rod (61) and the nut (62) being sleeved on the screw rod (61), the screw rod
(61) run through the cavity (411), the rotor (42) of the motor (40) drives the screw rod by the retarder (50)
(61) it rotates, so that the nut (62) is moved axially along the screw rod (61), so that first brake block (31) be pushed to move
It moves to compress brake disc (20).
9. line control brake system according to claim 8, which is characterized in that the disk brake is floating caliper type disc braking
Device, the disk brake further include the second brake block (32), and first brake block (31) and the second brake block (32) are respectively
Positioned at the brake disc (20) two sides, second brake block (32) is mounted on the braking clamp body (10).
10. line control brake system according to claim 8, which is characterized in that the disk brake further include electromagnetism from
Clutch (80), when the electromagnetic clutch (80) power-off, electromagnetic clutch (80) engagement, by the retarder (50)
A shaft locking；When the electromagnetic clutch (80) are powered, electromagnetic clutch (80) separation, by the shaft
Release.
11. line control brake system according to claim 10, which is characterized in that the electromagnetic clutch (80) includes electromagnetism
Iron, translational friction piece (85) and rotary friction pad (86), the electromagnet include fixed core (82), dynamic iron core (83) and act on
The driving spring (84) of the dynamic iron core (83), the rotary friction pad (86) connect with the shaft, the translational friction piece
(85) it can be driven by the dynamic iron core (83).
12. line control brake system according to claim 11, which is characterized in that the electromagnetic clutch (80) further include from
Clutch shell (81), outer race (87) and inside race (88), the inside race (88) connect with the shaft spline, the rotation
Friction plate (86) is arranged on the inside race (88), the inner wall spline of the outer race (87) and the clutch housing (81)
Connection, the clutch housing (81) is fixed relative to the braking clamp body (10), and the translational friction piece (85) is arranged in institute
It states on outer race (87).
13. line control brake system according to claim 10, which is characterized in that the retarder (50) is that beat bores poor row
The rotor (42) of star retarder, the motor (40) is connected with the ring gear (4) that the beat bores poor planetary reduction gear, described inclined
The output shaft (9) that pendulum bores poor planetary reduction gear is connected with the screw rod (61), and the shaft is that the beat bores poor planetary reduction gear
The input shaft (5) of device.
14. line control brake system according to claim 8, which is characterized in that the disk brake further includes piston
(90), the piston (90) is slidably fitted in one end of the cavity (411), and the retarder (50) is arranged in the cavity
(411) the other end, the nut (62) push first brake block (31) mobile by the piston (90).
15. a kind of vehicle, which is characterized in that including line control brake system described according to claim 1 any one of -14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885196.0A CN109552287A (en) | 2017-09-26 | 2017-09-26 | Line control brake system and vehicle |
| PCT/CN2018/107534 WO2019062745A1 (en) | 2017-09-26 | 2018-09-26 | Brake-by-wire system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885196.0A CN109552287A (en) | 2017-09-26 | 2017-09-26 | Line control brake system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109552287A true CN109552287A (en) | 2019-04-02 |
Family
ID=65863327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710885196.0A Pending CN109552287A (en) | 2017-09-26 | 2017-09-26 | Line control brake system and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109552287A (en) |
| WO (1) | WO2019062745A1 (en) |
Cited By (2)
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| WO2021248927A1 (en) * | 2020-06-08 | 2021-12-16 | 芜湖伯特利汽车安全系统股份有限公司 | Electro-hydraulic hybrid braking system for vehicle |
| CN114148306A (en) * | 2020-09-08 | 2022-03-08 | 蜂巢智能转向系统(江苏)有限公司保定分公司 | Automobile brake system and control method thereof |
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Also Published As
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| WO2019062745A1 (en) | 2019-04-04 |
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