CN207725381U - A kind of brake pedal travel simulator - Google Patents
A kind of brake pedal travel simulator Download PDFInfo
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- CN207725381U CN207725381U CN201820028699.6U CN201820028699U CN207725381U CN 207725381 U CN207725381 U CN 207725381U CN 201820028699 U CN201820028699 U CN 201820028699U CN 207725381 U CN207725381 U CN 207725381U
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Abstract
The utility model discloses a kind of brake pedal travel simulators, overcome existing brake pedal travel simulator different automobile types matching it is difficult, need to redesign simulator parameter, the non-adjustable driving habit personnel different from cannot be satisfied of pedal sense drive demand the problem of comprising pedal sense is adjusted partly and hydraulic spring grease cup cylinder part；Pedal sense adjustment portion point includes check valve (24), plunger pump (25), motor (26) and voltage stabilizing solenoid valve (30)；Hydraulic spring grease cup cylinder part includes simulator cylinder body (41)；Motor (26) is connect with plunger pump (25) using shaft coupling, a mouthfuls with check valve (24) of p mouthfuls of plunger pump (25) is connect, a mouthfuls of p mouthfuls of check valve (24) and voltage stabilizing solenoid valve (30) are connect with brake operating mechanism (1), and a mouthfuls of plunger pump (25) and simulator cylinder body (41) through-hole K1, through-hole K2, pressure sensor (28) are connect for p mouthfuls with voltage stabilizing solenoid valve (30).
Description
Technical field
The utility model is related to a kind of automobile brake pedal stroke simulators, more precisely, the utility model is related to
A kind of brake pedal travel simulator.
Background technology
In order to make new-energy automobile continual mileage improve, reduce energy consumption, new-energy automobile manufacturer is all generally proposed braking
Energy Recovery Technology.Since motor braking torque has certain effect range, national brake legislation also to have correlation to want braking system
It asks.Present brake energy recovering system is all made of conventional hydraulic and brakes the control mode being combined with motor braking.In order to
The pedal sense for making brake energy recovering system have Conventional braking systems consistent when motor braking, brake pedal travel simulator
A series of patents of invention generate therewith.
It is inquired by Patents documents, brake pedal travel simulator patent is generally divided into the simulation of passive type pedal at present
Two kinds of device and active pedal simulator.
It is CN101879891B that Chinese patent, which announces (announcements) number, announces (announcement) day as August in 2012 15 days, entitled
《Simulator for feeling automobile brake pedal》, apply for artificial Zhejiang Yatai Mechanical ＆ Electrical Co. Ltd..Chinese patent announces (announcement) number
For CN202130438, announcement (announcement) day is on February 1st, 2012, and number of patent application 915068.8 is entitled《It is a kind of
Simulator for feeling automobile brake pedal》, apply for artificial Zhejiang Yatai Mechanical ＆ Electrical Co. Ltd..U.S. Patent Publication (announcement) number is
US7,219,966B2, announcement (announcement) day is on May 22nd, 2007, and number of patent application 10/958021 is entitled《Braking
Pedal sense simulator》, apply for artificial Continental Motors Corperation.These three patents are passive type pedal simulator, once simulation
Device parameter is selected, and pedal sense is non-adjustable.It applies when in variant vehicle, needs to redesign simulator parameter,
It is unfavorable for the mass production manufacture of simulator.
In existing brake pedal travel simulator patent, the patent about active pedal simulator is less, through retrieval with
The maximally related patent of the utility model has：
It is CN101566211A that Chinese patent, which announces (announcement) number, and announcement (announcement) day is on October 28th, 2009, denomination of invention
For《Damper regulator and electronic brake pedal sense simulator》, apply for artificial Saic Chery Automobile Co., Ltd.Patent master
It to utilize the electric field fluid viscosity relationship of current liquid to adjust pedal to damp, but pedal sense simulator disclosed above needs
Up to several kilovolts of voltage is provided, and sensitive to biological impurities in current liquid, Applicable temperature range is relatively narrow, the body of equipment
Product is larger, and does not account for the free travel of brake pedal, finally then influences its braking ability.
It is CN101982356A that Chinese patent, which announces (announcement) number, and announcement (announcement) day is on March 2nd, 2011, entitled
《Automobile brake pedal mechanism and its pedal sense simulator》, apply for artificial Jiangsu Teachers University of Technology.The patent is related to microwave
The mechanisms such as range radar, central processing unit, it is complicated, it is of high cost, and magnetic rheological liquid control difficulty is high, simulates pedal sense
Feel difficult.
Invention content
Technical problem to be solved in the utility model is to overcome existing brake pedal travel simulator in different automobile types
Matching is difficult, needs to redesign simulator parameter and the unadjustable driving habit personnel different from cannot be satisfied of pedal sense
Drive demand the problem of, provide the brake pedal travel simulator that a kind of adjustable pedal is felt.
In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：
The brake pedal travel simulator that the adjustable pedal is felt includes that pedal sense adjusts part and hydraulic spring grease cup
Cylinder part；
The pedal sense adjustment portion point includes check valve, plunger pump, motor, pressure sensor and voltage stabilizing solenoid valve；
The hydraulic spring grease cup cylinder part includes simulator cylinder body；
The motor is connect with plunger pump using shaft coupling, and the p mouths of plunger pump connect with a mouth fluid pressure lines of check valve
It connecing, the p mouths of check valve and a mouths of voltage stabilizing solenoid valve are connect with the liquid outlet e fluid pressure lines of the fluid reservoir in brake operating mechanism,
The a mouths and the internal thread through hole K1 on simulator cylinder body, the internal thread through hole K2 on simulator cylinder body, pressure sensor of plunger pump
Interface connect with the p of voltage stabilizing solenoid valve mouth fluid pressure lines.
The p mouths of check valve described in technical solution and a mouths of voltage stabilizing solenoid valve and the fluid reservoir in brake operating mechanism
The connection of liquid outlet e fluid pressure lines, a mouths of plunger pump on simulator cylinder body internal thread through hole K1, on simulator cylinder body
Internal thread through hole K2, pressure sensor interface connect with the p of voltage stabilizing solenoid valve mouth fluid pressure lines and refer to:
It further includes No.1 threeway, No. two threeways, No. three threeways and No. four threeways that the pedal sense, which adjusts part,；It is described
The p mouths of check valve connect with the b of No.1 threeway mouth fluid pressure lines, the c mouths of No.1 threeway and a oral fluid pressure pipes of voltage stabilizing solenoid valve
Road connects, and a mouths of No.1 threeway are connect with the liquid outlet e fluid pressure lines of the fluid reservoir in brake operating mechanism；The a mouths of plunger pump
It is connect with the b of No. two threeways mouth fluid pressure lines, the c mouths of No. two threeways are connect with the p of voltage stabilizing solenoid valve mouth fluid pressure lines, No. two three
Logical a mouths are connect with the c of No. three threeways mouth fluid pressure lines, and the b mouths of No. three threeways connect with the interface fluid pressure line of pressure sensor
Connect, a mouths of No. three threeways are connect with the b of No. four threeways mouth fluid pressure lines, the c mouths of No. four threeways with a mouthfuls successively with simulator cylinder
Internal thread through hole K1 on body is connect with internal thread through hole K2 fluid pressure lines.
Hydraulic spring grease cup cylinder part described in technical solution further includes the first spring, second spring, end cap, gasket, rubber
Blob of viscose, second spring seat, second piston sealing ring, second piston, the first spring base, first piston sealing ring and first piston；
The first piston sealing ring, second piston sealing ring be set in first piston, second piston annular groove in, first
Piston is mounted in the interstitial hole and left hole of simulator cylinder body in succession with second piston；First spring base and second spring seat point
Not Cai Yong welding manner be fixed at the center of first piston and second piston, be welded at first piston and second piston center
The first spring base and second spring seat rotation conllinear；First spring is set in the first spring base with second spring
With on second spring seat, the right side of the left side of the first spring and second piston connects, the right side of the first spring with
The left side of first piston connects, and the left side of second spring and the right side of end cap connect, the right side of second spring
End face and the left side of second piston connect；The left side of rubber block and the right side of end cap are connected using heat adhesive,
The rotation conllinear of rubber block axis of rotation and end cap；End cap is connect with the left end of simulator cylinder body by end cover connecting bolt
It is fixed, gasket is installed between the right side and the left side of simulator cylinder body of end cap.
Second piston and first piston described in technical solution are circular discs class formation part, the structure ruler of second piston
The very little structure size more than first piston, second piston are machined with on the cylindrical surface on first piston periphery for placing sealing ring
Annular groove, second piston is equal with the diameter of interstitial hole with the left hole of simulator cylinder body successively with the diameter of first piston,
Second piston and first piston are successively to be slidably matched between the left hole and interstitial hole of simulator cylinder body.
Simulator cylinder body described in technical solution is cylindrical parts structural member, and three are machined with along the central axes of simulator cylinder body
The diameter of the stepped hole of segmentation cylinder, three-stage stepped hole from left to right successively decreases successively, and wherein right ports K3 is simulator cylinder
Body into oil outlet, and be processed into internal thread hole；There are six uniformly distributed to be used for connecting for processing in the left end face of simulator cylinder body
The cylindrical female hole of fixed end cap；The left and right ends of the hole wall of simulator cylinder body left hole are machined with two cylindrical interior spiral shells
Line through-hole K1 is pedal sense tune with internal thread through hole K2, cylindrical internal thread through hole K1, cylindrical internal thread through hole K2
Save chamber into oil outlet.
Before brake operating mechanism described in technical solution includes brake pedal, pedal displacement sensor, vacuum booster
Hold mandril, vacuum booster, fluid reservoir, electric vacuum pump and master cylinder；The brake pedal is located at driver in compartment
The top of lower front, brake pedal is fixed on by axis pin on pedal support, and pedal support is bolted on vehicle body,
The left side of brake pedal middle-end and the right side of the vacuum booster front end mandril of vacuum booster connect, pedal displacement
Sensor is fixed on the pedal support being connect with vehicle body, and the lever arm of pedal displacement sensor and the upper end of brake pedal connect
It connects, the vacuum booster is located in enging cabin, is fixed on vehicle body by ring flange, and output will pass through vacuum booster
Output push rod is withstood on the piston push rod of master cylinder.Electric vacuum pump is located in enging cabin, and the p mouths of electric vacuum pump utilize
Vacuum hose is connected with the vacuum port of vacuum booster, and a mouths of electric vacuum pump are directly connected with air using vacuum hose, system
Dynamic master cylinder is located at the left side of the vacuum booster in enging cabin, and fluid reservoir is integrated in the top of master cylinder, in fluid reservoir
Liquid outlet f is connected by the ante-chamber of pipeline and master cylinder with back cavity respectively with liquid outlet r, and the liquid outlet e of fluid reservoir passes through
Hose is connect with brake pedal travel simulator.
Compared with prior art the utility model has the beneficial effects that：
1. the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt is by controlling voltage stabilizing electricity
Magnet valve dutyfactor value adjusts pedal sense and adjusts cavity pressure, realizes the switching of 3 kinds of pedal senses, meets different driving habit crowds
Drive demand.And driver can increase self-defined pedal pattern according to itself driving habit, improve the satisfaction of user.
2. the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt is applied to different vehicles
When type, automobile vendor need to only re-scale dutyfactor value of the voltage stabilizing solenoid valve under different pedal patterns and can be applied to difference
Vehicle need not redesign pedal simulator Parameters of The Parts, reduce automobile vendor and develop jointly cost.
3. the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt provides a kind of pedal
Feel adjustment control method, pedal sense is adjusted according to the relationship of voltage stabilizing solenoid valve dutyfactor value and oil pressure relief value, one kind is stepped on
Plate mode corresponds to a dutyfactor value, and when switch mode only needs controller change duty cycle signals value cooperation electrical machinery hydraulic pump work
, control is simply.
4. the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt is rigid using two kinds of differences
The elastic element of degree simulates pedal sense so that and simulation pedal force curve is more nearly with tradition pedal force curve, so as to
So that pedal sense is closer to conventional hydraulic braking system.
5. the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt is simple in structure, itself
Function is relatively complete, and interface is simple, it may be convenient to be integrated in existing brake fluid system.Automobile vendor only needs pair
Brake piping is modified, and a small amount of solenoid valve is added, you can is accessed among traditional brake fluid system.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings：
Fig. 1 is that the structural principle for the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt shows
It is intended to；
Fig. 2 is showing for the brake pedal travel simulator structure composition that a kind of adjustable pedal described in the utility model is felt
It is intended to；
Fig. 3 is the control method for the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt
Flow diagram；
Fig. 4 is the brake pedal position for the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt
Move the curve graph of the relationship between brake pedal force；
Fig. 5 is the voltage stabilizing solenoid valve for the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt
The calibration schematic diagram of duty ratio and oil pressure relief relationship；
In figure：1. brake operating mechanism, 2. brake pedals, 3. pedal displacement sensors, 4. vacuum booster front end mandrils,
5. vacuum booster, 6. fluid reservoirs, 7. electric vacuum pumps, 8. master cylinders, 9. simulator liquid inlet electromagnetic valves, 10. brake pedals
Stroke simulator, 11. front axle solenoid valves, 12. rear axle solenoid valves, 13. electric-controlled hydraulics adjust unit, 14. the near front wheels, before 15. right sides
Wheel, 16. left rear wheels, 17. off hind wheels, 18. simulator admission chambers, 19. first springs, 20. pedal sense adjusting cavities, 21. second
Spring, 22. end caps, 23. No.1 threeways, 24. check valves, 25. plunger pumps, 26. motors, 27. No. two threeways, 28. pressure sensings
Device, 29. No. three threeways, 30. voltage stabilizing solenoid valves, 31. end cover connecting bolts, 32. gaskets, 33. No. four threeways, 34. rubber blocks,
35. second spring seat, 36. second piston sealing rings, 37. second pistons, 38. first spring bases, 39. first piston sealing rings,
40. first piston, 41. simulator cylinder bodies, 42. brake monitors.
Specific implementation mode
The utility model is explained in detail below in conjunction with the accompanying drawings：
Brake pedal travel simulator, that is, brake-pedal travel mould that a kind of adjustable pedal described in the utility model is felt
Quasi- device 10 includes that pedal sense adjusts part and hydraulic spring grease cup cylinder part.
Referring to Fig.2, the pedal sense, which adjusts part, can actively regulate pedal simulator rigidity.
The pedal sense adjustment portion point includes No.1 threeway 23, check valve 24, plunger pump 25, motor 26, No. two three
Logical 27,30, No. four 28, No. three threeways 29 of pressure sensor, voltage stabilizing solenoid valve threeways 33.
The threeway 29 of threeway 27, three of No.1 threeway 23, two and No. four threeways 33 is using the identical cutting ferrule of structure
Formula tee pipe coupling is used for while connecting three fluid pressure lines.
It is 0.04MPa that the check valve 24, which uses straight check valve, positive Opening pressure,.Check valve 24 is for controlling
Brake oil flow is only capable of making brake fluid from the p mouth inflows plunger pump 25 of check valve 24, and brake fluid cannot be made to flow back.
The plunger pump 25 uses eccentric shaft type plunger piston pump, can flow into plunger by check valve 24 is passed through in fluid reservoir 6
The low pressure brake fluid of pump 25 becomes high-pressure brake liquid, supply pedal sense adjusting cavity 20.
The motor 26 uses brushed DC permanent magnet motor, and the work of plunger pump 25 sucking can be driven to be braked with output
Liquid.
The pressure sensor 28 is needed using the active pressure sensor of the model 303 of BOSCH companies production
The supply voltage for inputting 5V, can measure the pressure of pedal sense adjusting cavity 20.
The voltage stabilizing solenoid valve 30 is bi-bit bi-pass normally open solenoid valve, and the duty ratio by controlling voltage stabilizing solenoid valve 30 can
Actively to adjust the pressure in pedal sense adjusting cavity 20.
The position of specific component and connection type are：The p mouths of check valve 24 and the b mouth fluid pressure lines of No.1 threeway 23 connect
It connects, a mouths of voltage stabilizing solenoid valve 30 are connect with the c of No.1 threeway 23 mouth fluid pressure lines, a of the p mouth and check valve 24 of plunger pump 25
The connection of mouthful fluid pressure line, a mouths of plunger pump 25 are connect with the b of No. two threeways 27 mouth fluid pressure lines, c mouths of No. two threeways 27 and surely
The p mouth fluid pressure lines of pressure electromagnetic valve 30 connect, and a mouths of No. two threeways 27 are connect with the c of No. three threeways 29 mouth fluid pressure lines, pressure
Sensor 28 is connect with the b of No. three threeways 29 mouth fluid pressure lines, the b oral fluid pressure pipes of a mouths of No. three threeways 29 and No. four threeways 33
Road connects.The motor 26 is connect with plunger pump 25 by shaft coupling.
Referring to Fig.2, the hydraulic spring grease cup cylinder part is for accommodating brake fluid, using the different spring of two rigidity and
Two concatenated modes of piston simulate front and back wheel cylinder rigidity, keep pedal sense consistent with Conventional braking systems.
The hydraulic spring grease cup cylinder part includes the first spring 19, second spring 21, end cap 22, end cover connecting bolt
31, gasket 32, rubber block 34, second spring seat 35, second piston sealing ring 36, second piston 37, the first spring base 38, first
Piston packing 39, first piston 40 and simulator cylinder body 41.
The simulator cylinder body 41 is cylindrical parts structural member, and three-stage circle is machined with along the central axes of simulator cylinder body 41
The diameter of cylindrical stepped hole, three-stage stepped hole from left to right successively decreases successively, and wherein right ports K3 is simulator cylinder body 41
Into oil outlet, and it is processed into internal thread hole；The processing of cylinder body left end face is solid for connecting there are six uniformly distributed cylindrical female hole
Fixed end lid 22；It is logical that the left and right ends of the hole wall of 41 left hole of simulator cylinder body (large diameter hole) are machined with two cylindrical internal threads
Hole K1, K2, cylindrical internal thread through hole K1, K2 are pedal sense adjusting cavity 20 into oil outlet.
First spring 19 uses cylindrically coiled spring, and rigidity is smaller, wheel cylinder pressure when main analog small intensity is braked
Power bulk properties.
The second spring 21 uses cylindrically coiled spring, and rigidity is larger, wheel cylinder pressure when the big intensity of main analog is braked
Power bulk properties.
The end cap 22 is cylindrical disc class formation part, and end face processing is used to support there are six uniformly distributed cylindrical hole
Second spring 21 and fixed rubber block 34 and sealing simulator cylinder body 41.
The end cover connecting bolt 31 is single ended bolt, is used for connection end cap 22 and simulator cylinder body 41.
The gasket 32 is rubber material, plays the role of locking and sealed cylinder block.
The rubber block 34 is cylindrical rubber material, is used for the buffer shock-absorbing of second spring seat 35.
The second spring seat 35, the first spring base 38 are cylindrical structure part, are respectively used to installation and fix second
Spring 21 and the first spring 19.
The second piston sealing ring 36, first piston sealing ring 39 are O-ring seals, for the close of brake fluid
Envelope.
The second piston 37, first piston 40 are cylindrical disc class formation part, the structure size of second piston 37
More than the structure size of first piston 40, second piston 37 be machined on the cylindrical surface on 40 periphery of first piston it is close for placing
The annular groove of seal, the diameter of second piston 37 and first piston 40 successively with the left hole of simulator cylinder body 41 and interstitial hole
Diameter is equal, and second piston 37 and first piston 40 are matched between the left hole and interstitial hole of simulator cylinder body 41 for sliding successively
It closes.
The position of specific component and connection type are：First piston sealing ring 39, second piston sealing ring 36 are respectively fitted over
First piston 40, second piston 37 annular groove in, first piston 40 and second piston 37 are mounted on simulator cylinder body 41 in succession
Interstitial hole and left hole in；Simulator cylinder body is divided into the chamber of left, center, right three by first piston 40 with second piston 37,
Middle right chamber is located at 40 right side of first piston, being simulator admission chamber 18, the system of four wheel cylinders is flowed into when for accommodating traditional braking
Hydrodynamic.Lumen between first piston 40 and second piston 37, left chamber between second piston 37 and end cap 22, lumen and
Left chamber is pedal sense adjusting cavity 20, and the liquid for accommodating the input of plunger pump 25, lumen and left chamber are connected by fluid pressure line
Logical, right chamber is not connected to lumen, left chamber.First spring base 38, second spring seat 35 are respectively welded at first piston 40 and second
At the center of piston 37, it is welded on first piston 40 and the first spring base 38, the second spring seat 35 at 37 center of second piston
Rotation conllinear；First spring 19 and second spring 21 are respectively arranged on the first spring base 38 and second spring seat 35,
The left side of first spring 19 is in contact with the right side of second piston 37, right side and the first piston 40 of the first spring 19
Left side is in contact, and the left side of second spring 21 is in contact with the right side of end cap 22, the right side of second spring 21 and the
The left side of two pistons 37 is in contact；The left side of rubber block 34 is connect with the right side of end cap 22 by heat adhesive, rubber
The rotation conllinear of block 34 axis of rotation and end cap 22；End cap 22 and the left end of simulator cylinder body 41 pass through end cover connecting bolt
31 are connected and fixed, and gasket 32 is equipped between the right side and the left side of simulator cylinder body 41 of end cap 22.
Refering to fig. 1, brake pedal travel simulator 10 described in the utility model is mounted in vehicle braking system, with system
Dynamic system inside brake operating mechanism 1 is connected.Vehicle braking system includes brake operating mechanism 1 and brake actuator.Wherein
Brake actuator need to meet traditional brake-by-wire system functional requirement, and the utility model emphasis is brake pedal travel simulator
10, therefore be not described, brake actuator shown in Fig. 1 (including front axle solenoid valve 11, rear axle solenoid valve 12, electric-controlled hydraulic are adjusted
Unit 13, the near front wheel 14, off-front wheel 15, left rear wheel 16, off hind wheel 17) only refer to.
The brake operating mechanism 1 includes mainly brake pedal 2, pedal displacement sensor 3, vacuum booster front end top
Bar 4, vacuum booster 5, fluid reservoir 6, electric vacuum pump 7 and master cylinder 8.
The brake pedal 2 divides for rotating part and pedal support, and axis pin is installed on rotating part top, and pedal support is adopted
It is fixed with bolt and vehicle body.
The pedal displacement sensor 3 using ASM companies of Germany CLM series stay-supported type displacement sensor, using stepping on
Lever arm on plate displacement sensor 3 can measure out the angular displacement of brake pedal 2, and angular displacement is sent to controller, be used for
The pedal displacement information of driver is obtained when Recovering Waste Energy of Braking in Automobiles.
The vacuum booster front end mandril 4 is the input terminal of vacuum booster 5.
The vacuum booster 5 uses penetration type vacuum booster, using negative pressure by vacuum booster front end mandril 4
Input power is amplified, and the power that driver acts on braking system is increased.
The fluid reservoir 6 shares three for storing brake fluid and detecting brake fluid surplus using rigid plastics material
A liquid outlet, respectively liquid outlet f, liquid outlet r, liquid outlet e, wherein liquid outlet f, liquid outlet r are arranged in 6 bottom of fluid reservoir,
Liquid outlet e is arranged in 6 side middle and lower part of fluid reservoir.
The electric vacuum pump 7 selects piston type electric vacuum pump, is powered using vehicle power supply 12V, is used for mould
The negative pressure source of quasi- original car engine air inlet pipe.
The mechanical energy that driver pedal inputs is converted to hydraulic energy by the master cylinder 8, uses series connection two-chamber formula,
There are two the chamber that can generate high-pressure brake liquid independently of one another, two chambers enter 8 inside of master cylinder at arranged in series, machinery
Mouth is piston push rod, and hydraulic output is ante-chamber liquid outlet H, back cavity liquid outlet I.
The position of specific component and connection type：Brake pedal 2 is located at driver's lower front in compartment, brake pedal 2
The top of rotating part is fixed on by axis pin on pedal support, and pedal support is bolted on vehicle body, brake pedal 2
The middle-end left side of rotating part and the right side of the vacuum booster front end mandril 4 of vacuum booster 5 connect.Pedal position
Displacement sensor 3 is fixed on the pedal support being connect with vehicle body, the rotation of the lever arm and brake pedal 2 of pedal displacement sensor 3
Transfer part point connection.The vacuum booster 5 is located in enging cabin, is fixed on vehicle body by ring flange, and output will pass through
Vacuum booster 5 exports push rod and withstands on the piston push rod of master cylinder 8.The electric vacuum pump 7 is located in enging cabin, electricity
The p mouths of dynamic vacuum pump 7 are connected using vacuum hose with the vacuum port of vacuum booster, and a mouths of electric vacuum pump 7 are soft via vacuum
Pipe is directly connected with air.The master cylinder 8 is located at 5 rear portion of vacuum booster in enging cabin.Fluid reservoir 6 is integrated in system
The top of dynamic master cylinder 8, the liquid outlet of fluid reservoir 6 altogether there are three, wherein liquid outlet f and liquid outlet r pass through pipeline and braking respectively
The ante-chamber of master cylinder 8 is connected with back cavity, and liquid outlet e is connect by hose with brake pedal travel simulator 10.
Pedal sense is adjusted in a kind of brake operating mechanism 1 provided by the utility model, brake pedal travel simulator 10
Part and the connection relation of hydraulic spring grease cup cylinder part are：In brake operating mechanism 1 the liquid outlet e of liquid storing cup 6 by hose with
The a mouths that pedal sense adjusts the No.1 threeway 23 of part are connected；Pedal sense adjusts the c mouths and a of No. four threeways 33 of part
Mouth is connected with the holes K1 of hydraulic spring grease cup cylinder part and the holes K2 respectively；The H mouths and mould of master cylinder 8 in brake operating mechanism 1
The p mouth piping connections of quasi- device liquid inlet electromagnetic valve 9, a mouths of simulator liquid inlet electromagnetic valve 9 and the K3 mouth phases of hydraulic spring grease cup cylinder part
Connection.
Refering to Fig. 4, there are three types of the brake pedal travel simulator tools that a kind of adjustable pedal described in the utility model is felt
Operating mode, i.e., common pedal pattern, comfortable pedal pattern and moving steps pattern, the pedal sense of different pedal patterns is not
Together, i.e., pedal force is of different sizes under same pedal displacement, and pedal force is maximum under motor pattern, and pedal force is minimum under comfort mode.
The switching of each pattern is completed by the control of voltage stabilizing solenoid valve 30 and motor 26.It is introduced by taking moving steps pattern as an example below
The pedal simulator course of work described in the utility model.
When the brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt is operated in motor pattern
When, brake monitor 42 receives the pedal displacement signal of pedal displacement sensor 3, once pedal displacement is more than threshold value, system
Movement controller 42 makes motor 26 work, and motor 26 makes the work of plunger pump 25 take out brake fluid from fluid reservoir 6, and brake fluid is by unidirectional
Valve 24 and plunger pump 25 become high-pressure brake liquid, while voltage stabilizing solenoid valve 30 receives the electric current of a duty ratio corresponding, are powered
It closes, once 28 surveyed 20 pressure of pedal sense adjusting cavity of pressure sensor is more than motor pattern threshold pressure, voltage stabilizing electromagnetism
Valve 30 is opened overflow decompression by action of hydraulic force, and when pressure is less than motor pattern threshold pressure, hydraulic coupling reduction can not make
Voltage stabilizing solenoid valve 30 is opened, and electrical machinery hydraulic pump, which continues supercharging, makes pedal sense adjusting cavity pressure maintain a stable range.
The brake pedal travel simulator that a kind of adjustable pedal described in the utility model is felt additionally provides a kind of simulation
Device crash handling mode, when the brake pedal travel simulator failure that adjustable pedal is felt, arrestment mechanism is switched to traditional brake
Car state, simulator liquid inlet electromagnetic valve 9, front axle solenoid valve 11, rear axle solenoid valve 12 are off-position, driver's pedal,
Brake fluid adjusts 13 to four wheels of unit by front axle solenoid valve 11 and rear axle solenoid valve 12 from master cylinder 8 by electric-controlled hydraulic
Cylinder generates brake force.
Refering to Fig. 3, a kind of brake pedal travel simulator conduct braking that adjustable pedal is felt described in the utility model
One component of system, needs the instruction according to brake monitor 42 come work.A kind of adjustable pedal described in the utility model
The brake pedal travel simulator of feeling is controlled using closed loop control method, is specifically divided into following steps：
Step 1: driver selects brake pedal pattern, there are three types of patterns altogether：Moving steps pattern, common pedal mould
Formula and comfortable pedal pattern, manufacturer on the basis of the utility model by change software program can also self-developing make by oneself
Adopted pedal pattern；
Step 2: brake monitor 42 looks into 20 goal pressure P of pedal sense adjusting cavity according to pedal operating modepurposeWith
Pedal operating mode relation table determines 20 target pressure value P of pedal sense adjusting cavitypurpose.Master cylinder pressure reflects pedal sense,
Under same pedal displacement, master cylinder pressure is：
PMaster cylinder=Pact+FSpring/SPiston
Under same pedal displacement, spring force FSpringWith piston area SPistonIt is constant, then master cylinder pressure PMaster cylinderOnly by pedal sense tune
Save 20 actual pressure P of chamberactIt influences, control targe is to make Pact=Ppurpose.Pedal sense adjusting cavity goal pressure PpurposeWith
Pedal operating mode relation table needs demarcated according to specific vehicle, the first spring, second spring rigidity and impulse stroke and
Piston diameter is demarcated according to wheel cylinder brake fluid pressure bulk properties, in order to improve pedal sense adjustable range, can suitably be reduced
First, second spring rate increases piston diameter and impulse stroke；
Step 3: brake monitor 42 looks into 20 goal pressure P of pedal sense adjusting cavitypurposeWith 30 duty of voltage stabilizing solenoid valve
Than relation table, 30 duty ratio of voltage stabilizing solenoid valve is determined.20 goal pressure P of pedal sense adjusting cavitypurposeWith voltage stabilizing solenoid valve 30
Duty cycle relationship table needs to demarcate 30 oil pressure relief value of voltage stabilizing solenoid valve under different duty, and specific scaling method can join
It reads shown in Fig. 5, is not the utility model emphasis；
Step 2: step 3 can merge into a step, regenerative braking controller looks into pedal work according to pedal operating mode
Operation mode and 30 duty cycle relationship table of voltage stabilizing solenoid valve, determine 30 duty ratio of voltage stabilizing solenoid valve；
Step 4: brake monitor 42 receives 3 signal of pedal displacement sensor；
Step 5: if pedal displacement S=0, carries out step 6；If pedal displacement S>0, then carry out step 7；
Step 6: brake monitor 42 sends 0 signal, motor 26 and voltage stabilizing solenoid valve 30 are powered off and are not worked, at this time surely
Pressure electromagnetic valve 30 is channel status, and 20 pressure of pedal sense adjusting cavity is atmospheric pressure.Terminate return to step four；
Step 7: brake monitor 42 receives the 20 pressure P of pedal sense adjusting cavity that pressure sensor 28 transmitsactLetter
Number；
If Step 8: Pact<Ppurpose, i.e., 20 actual pressure of pedal sense adjusting cavity is less than 20 mesh of pedal sense adjusting cavity
Pressure is marked, then enters step nine；If Pact>=Ppurpose, i.e., 20 actual pressure of pedal sense adjusting cavity is more than or equal to pedal sense
Feel 20 goal pressure of adjusting cavity, then enters step ten；
Step 9: the duty cycle signals that 42 forwarding step three of brake monitor determines are to voltage stabilizing solenoid valve 30, voltage stabilizing electromagnetism
Valve is powered under this duty ratio corresponding current, while motor 26 receives 1 signal that brake monitor 42 is sent and is powered on
Plunger pump 25 is driven to take out brake fluid, pedal sense adjusting cavity 20 is pressurized, return to step seven；
Motor 26 is set to be stopped Step 10: brake monitor 42 sends 0 signal, voltage stabilizing solenoid valve 30 is still in step 3
It is powered under determining duty cycle current, return to step four.
Claims (6)
1. a kind of brake pedal travel simulator, which is characterized in that a kind of brake pedal travel simulator includes pedal
Feel to adjust part and hydraulic spring grease cup cylinder part；
The pedal sense adjustment portion point include check valve (24), plunger pump (25), motor (26), pressure sensor (28) and
Voltage stabilizing solenoid valve (30)；
The hydraulic spring grease cup cylinder part includes simulator cylinder body (41)；
The motor (26) is connect with plunger pump (25) using shaft coupling, the p mouths of plunger pump (25) and a mouths of check valve (24)
Fluid pressure line connection, the p mouths of check valve (24) and a mouths of voltage stabilizing solenoid valve (30) and the fluid reservoir in brake operating mechanism (1)
(6) liquid outlet e fluid pressure lines connection, a mouths of plunger pump (25) and the internal thread through hole K1 on simulator cylinder body (41), simulation
The interface of internal thread through hole K2, pressure sensor (28) on device cylinder body (41) and the p mouth fluid pressure lines of voltage stabilizing solenoid valve (30)
Connection.
2. a kind of brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the check valve (24)
The a mouths of p mouthfuls and voltage stabilizing solenoid valve (30) are connect with the liquid outlet e fluid pressure lines of the fluid reservoir (6) in brake operating mechanism (1),
The a mouths and the internal thread through hole K1 on simulator cylinder body (41), the internal thread through hole on simulator cylinder body (41) of plunger pump (25)
K2, the interface of pressure sensor (28) are connect with the p mouth fluid pressure lines of voltage stabilizing solenoid valve (30) refers to:
The pedal sense adjust part further include No.1 threeway (23), No. two threeways (27), No. three threeways (29) with No. four
Threeway (33)；
The p mouths of the check valve (24) are connect with the b mouth fluid pressure lines of No.1 threeway (23), the c mouths of No.1 threeway (23) with
The a mouth fluid pressure lines of voltage stabilizing solenoid valve (30) connect, a mouths and the fluid reservoir in brake operating mechanism (1) of No.1 threeway (23)
(6) liquid outlet e fluid pressure lines connection；The a mouths of plunger pump (25) are connect with the b mouth fluid pressure lines of No. two threeways (27), No. two
The c mouths of threeway (27) are connect with the p mouth fluid pressure lines of voltage stabilizing solenoid valve (30), a mouths and No. three threeways of No. two threeways (27)
(29) c mouth fluid pressure lines connection, the b mouths of No. three threeways (29) are connect with the interface fluid pressure line of pressure sensor (28), and three
The a mouths of number threeway (29) are connect with the b mouth fluid pressure lines of No. four threeways (33), the c mouths of No. four threeways (33) with a mouthfuls successively and mould
Internal thread through hole K1 on quasi- device cylinder body (41) is connect with internal thread through hole K2 fluid pressure lines.
3. a kind of brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the hydraulic spring grease cup cylinder body
Part further includes the first spring (19), second spring (21), end cap (22), gasket (32), rubber block (34), second spring seat
(35), second piston sealing ring (36), second piston (37), the first spring base (38), first piston sealing ring (39) and first
Piston (40)；
The first piston sealing ring (39), second piston sealing ring (36) are set in first piston (40), second live
In the annular groove for filling in (37), first piston (40) and second piston (37) in succession mounted on the interstitial hole of simulator cylinder body (41) with
In left hole；First spring base (38) and second spring seat (35) are respectively adopted welding manner and are fixed on first piston (40) and the
At the center of two pistons (37), it is welded on the first spring base (38) at first piston (40) and second piston (37) center and the
The rotation conllinear of two spring bases (35)；First spring (19) is set in the first spring base (38) with second spring (21)
With on second spring seat (35), the left side of the first spring (19) is connected with the right side of second piston (37), the first bullet
The right side of spring (19) is connected with the left side of first piston (40), left side and the end cap (22) of second spring (21)
Right side connects, and the right side of second spring (21) is connected with the left side of second piston (37)；Rubber block (34)
Left side connect by heat adhesive with the right side of end cap (22), the revolution of rubber block (34) axis of rotation and end cap (22)
Axis collinear；End cap (22) and the left end of simulator cylinder body (41) are connected and fixed by end cover connecting bolt (31), end cap (22)
Right side and the left side of simulator cylinder body (41) between gasket (32) is installed.
4. a kind of brake pedal travel simulator described in accordance with the claim 3, which is characterized in that the second piston (37)
It is circular discs class formation part with first piston (40), the structure size of second piston (37) is more than the structure of first piston (40)
The annular groove for placing sealing ring is machined on the cylindrical surface on size, second piston (37) and first piston (40) periphery, the
Two pistons (37) are equal with the diameter of interstitial hole with the left hole of simulator cylinder body (41) successively with the diameter of first piston (40),
Second piston (37) and first piston (40) are successively to be slidably matched between the left hole and interstitial hole of simulator cylinder body (41).
5. a kind of brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the simulator cylinder body
(41) it is cylindrical parts structural member, the stepped hole of three-stage cylinder, three-stage is machined with along the central axes of simulator cylinder body (41)
The diameter of stepped hole from left to right successively decreases successively, and wherein right ports K3 is simulator cylinder body (41) into oil outlet, and is processed into
Internal thread hole；There are six the uniformly distributed cylinders for being used for being connected and fixed end cap (22) for processing in the left end face of simulator cylinder body (41)
Shape internal thread hole；The left and right ends of the hole wall of simulator cylinder body (41) left hole be machined with two cylindrical internal thread through hole K1 with
Internal thread through hole K2, cylindrical internal thread through hole K1, cylindrical internal thread through hole K2 are pedal sense adjusting cavity (20)
Into oil outlet.
6. a kind of brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the brake operating mechanism
(1) include brake pedal (2), pedal displacement sensor (3), vacuum booster front end mandril (4), vacuum booster (5), liquid storage
Tank (6), electric vacuum pump (7) and master cylinder (8)；
The brake pedal (2) is located at driver's lower front in compartment, and the top of brake pedal (2) is fixed on by axis pin
On pedal support, pedal support is bolted on vehicle body, the left side of brake pedal (2) middle-end and vacuum booster
(5) right side of vacuum booster front end mandril (4) connects, and pedal displacement sensor (3) is fixed on to be connect with vehicle body
Pedal support on, the lever arm of pedal displacement sensor (3) is connect with the upper end of brake pedal (2), the vacuum booster
(5) it is located in enging cabin, is fixed on vehicle body by ring flange, output will exports push rod top by vacuum booster (5)
On the piston push rod of master cylinder (8), electric vacuum pump (7) is located in enging cabin, and the p mouths of electric vacuum pump (7) utilize
Vacuum hose is connected with the vacuum port of vacuum booster (5), and a mouths of electric vacuum pump (7) use vacuum hose directly and air
It is connected, master cylinder (8) is located at the left side of the vacuum booster (5) in enging cabin, and fluid reservoir (6) is integrated in master cylinder
(8) top, the middle liquid outlet f and liquid outlet r of fluid reservoir (6) pass through the ante-chamber and back cavity of pipeline and master cylinder (8) respectively
It is connected, the liquid outlet e of fluid reservoir (6) is connect by hose with brake pedal travel simulator (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820028699.6U CN207725381U (en) | 2018-01-08 | 2018-01-08 | A kind of brake pedal travel simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820028699.6U CN207725381U (en) | 2018-01-08 | 2018-01-08 | A kind of brake pedal travel simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207725381U true CN207725381U (en) | 2018-08-14 |
Family
ID=63085076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820028699.6U Expired - Fee Related CN207725381U (en) | 2018-01-08 | 2018-01-08 | A kind of brake pedal travel simulator |
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| Country | Link |
|---|---|
| CN (1) | CN207725381U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108032851A (en) * | 2018-01-08 | 2018-05-15 | 吉林大学 | A kind of brake pedal travel simulator and its control method |
| CN110682900A (en) * | 2019-10-17 | 2020-01-14 | 浙江亚太机电股份有限公司 | Integrated braking system with adjustable pedal feel and self-checking function |
| CN111256970A (en) * | 2020-02-18 | 2020-06-09 | 万向钱潮股份有限公司 | Simulation device capable of adjusting automobile brake pedal feeling |
| CN112644526A (en) * | 2020-12-17 | 2021-04-13 | 北京北九方科贸有限公司 | Hydraulic adjusting pedal |
-
2018
- 2018-01-08 CN CN201820028699.6U patent/CN207725381U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108032851A (en) * | 2018-01-08 | 2018-05-15 | 吉林大学 | A kind of brake pedal travel simulator and its control method |
| CN108032851B (en) * | 2018-01-08 | 2024-01-02 | 吉林大学 | Brake pedal stroke simulator and control method thereof |
| CN110682900A (en) * | 2019-10-17 | 2020-01-14 | 浙江亚太机电股份有限公司 | Integrated braking system with adjustable pedal feel and self-checking function |
| CN111256970A (en) * | 2020-02-18 | 2020-06-09 | 万向钱潮股份有限公司 | Simulation device capable of adjusting automobile brake pedal feeling |
| CN112644526A (en) * | 2020-12-17 | 2021-04-13 | 北京北九方科贸有限公司 | Hydraulic adjusting pedal |
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Granted publication date: 20180814 Termination date: 20190108 |