CN104442784B - Integrated electric control master cylinder drive system - Google Patents

Integrated electric control master cylinder drive system Download PDF

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Publication number
CN104442784B
CN104442784B CN201410713915.7A CN201410713915A CN104442784B CN 104442784 B CN104442784 B CN 104442784B CN 201410713915 A CN201410713915 A CN 201410713915A CN 104442784 B CN104442784 B CN 104442784B
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China
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master cylinder
oil
leading screw
screw
solenoid valve
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CN104442784A (en
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李静
杨雄
张伟同
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Jilin University
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Jilin University
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    • 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
    • B60T13/741—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 acting on an ultimate actuator
    • 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
    • B60T13/745—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 acting on a hydraulic system, e.g. a master cylinder

Abstract

The invention discloses a kind of integrated electric control master cylinder drive system, being intended to overcome in existing brake fluid system that power-assisted volume is compared with big, the poor problem poor with pedal sense when braking of active safety function, it includes brake pedal operation mechanism, electric machine actuating mechanism and hydraulic control unit.Electric machine actuating mechanism includes leading screw screw mechanism, stroke return mechanism, input sealing mechanism, shell mechanism, leading screw screw drive and rotor-position sensor.Stroke return mechanism is arranged in drive end bearing bracket, leading screw screw mechanism uses bearing to be arranged on drive end bearing bracket and middle-end lid, and be in rear end cap, the right side of the stroke return spring back seat of stroke return mechanism contacts with the left side of the leading screw screw rod in leading screw screw mechanism, leading screw screw drive is sleeved on the 3rd section of axle of the feed screw nut in leading screw screw mechanism, rotor-position sensor is sleeved on the first paragraph axle of feed screw nut, and input sealing mechanism is arranged in the first ladder blind hole of leading screw screw rod.

Description

Integrated electric control master cylinder drive system
Technical field
The present invention relates to the integrated electric control master cylinder drive system of the one in vehicle chassis technology field.
Background technology
From automobile birth, motor vehicle braking system just plays vital role at the secure context of vehicle.Existing For the commonly used brake fluid system of automobile, its composition includes brake pedal, master cylinder, vacuum booster, fluid pressure line, system Dynamic devices etc., during braking, driver's brake pedal promotes master cylinder motion, the brake force machine that pedal is inputted by master cylinder Tool can be converted into hydraulic energy, and high-pressure brake liquid arrives wheel cylinder through fluid pressure line, it is achieved braking.But above-mentioned brake fluid system Exist certain not enough: driver's burden is bigger；The active safety control functions such as integrated vacuum power-assisted and modern ABS, TCS and ESP After, brake fluid system is more complicated, and brake fluid system response speed is slow.
Chinese patent bulletin (opening) number is CN10132778A, and bulletin (opening) day is 2008.12.24, Application No. 200710111537.5, invention entitled " a kind of electric booster braking system ", structurally this system additionally increase a kind of from Clutch, causes brake fluid system overall volume relatively big, and does not has ABS, TCS and ESP of extensive integrated use on current automobile Deng active safety function, once motor braking lost efficacy, and the safety of braking can not be guaranteed.
Chinese patent bulletin (opening) number is 103496362A, and bulletin (opening) day is 2014.01.08, Application No. 201310504320.6, invention entitled " a kind of compensation integrated electric control brakes ", although disclosure satisfy that above-mentioned need Ask, but when motor reversal drives leading screw screw retreats, input push rod follows leading screw screw retreats, makes driver produce top feel Feeling, pedal sense is poor.Therefore, ensureing that brake system of car has good braking ability energy integrated ABS, TCS and ESP While active safety function, designing a structure simpler, degree of integration is higher, and pedal sense when can guarantee that braking More preferable integrated electric control moves master cylinder driving means, becomes the key technical problem needing emphasis to solve.
Summary of the invention
The technical problem to be solved is to overcome power-assisted volume in the brake fluid system that prior art exists Compared with big, the poor problem poor with pedal sense during braking of active safety function, it is provided that a kind of integrated electric control master cylinder Drive system.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that realization: described integrated electric control Master cylinder drive system includes brake pedal operation mechanism, electric machine actuating mechanism, brake master cylinder assy, hydraulic control list Unit, electronic control unit and motor drive controller.Described electric machine actuating mechanism includes leading screw screw mechanism, stroke return Mechanism, input sealing mechanism, shell mechanism, leading screw screw drive, clutch shaft bearing, the second bearing and rotor position sensing Device.
Described shell mechanism includes drive end bearing bracket, casing, middle end cap and rear end cap.
The right-hand member circular disk of drive end bearing bracket is with bolts with the left flange plate of casing, the right ring flange of casing and middle-end Covering with bolts, the left end ring flange of rear end cap is with bolts with middle end cap.
Stroke return mechanism is arranged in drive end bearing bracket, before leading screw screw mechanism uses clutch shaft bearing and the second bearing to be arranged on On end cap and middle-end lid, and it is among rear end cap, the right side of the stroke return spring back seat in stroke return mechanism and silk The left side contact of the leading screw screw rod in thick stick screw mechanism connects, and leading screw screw drive is sleeved in leading screw screw mechanism Being bonded on 3rd section of axle of feed screw nut, rotor-position sensor is sleeved on the first paragraph axle of feed screw nut, and is in In the right cylinder of rear end cap, input sealing mechanism is arranged in the first ladder blind hole of leading screw screw rod.
Leading screw screw mechanism described in technical scheme also includes plunger push rod, stroke adjustment spring base, stroke adjustment Spring, ball body, stroke adjustment push rod, adjusting base, rubber reaction plate and output push rod.Feed screw nut is set with by ball body Connecting for rolling on leading screw screw rod, stroke adjustment spring base loads the right-hand member of leading screw screw rod the first ladder blind hole, stroke adjustment Being matched in clearance between spring base and the first ladder blind hole of leading screw screw rod, plunger push rod loads the groove of stroke adjustment spring base Interior for being slidably matched, the right-hand member of plunger push rod is connected with the left end ball pivot of the input push rod in brake pedal operation mechanism, stroke The right-hand member of regulation spring is connected with the recessed circle of left end annular stop of stroke adjustment spring base；The left end of stroke adjustment spring embeds It is arranged in the annular stop groove on the stroke adjustment push rod in the second ladder blind hole, a left side for left section of axle of stroke adjustment push rod End embeds in the intercommunicating pore of leading screw screw rod, and extend in the 3rd ladder blind hole of leading screw screw rod；Adjusting base is enclosed in leading screw In 3rd ladder blind hole of screw rod, the left end of left section of axle of stroke adjustment push rod insert adjusting base interstitial hole and with circular rubber The right side of glue reaction plate contacts, and rubber reaction plate connects for contact in loading the groove on the right-hand member disk of output push rod； The right-hand member disk of output push rod loads in the 3rd ladder blind hole of leading screw screw rod.
Feed screw nut described in technical scheme is the cylindrical element of a hollow, the left end of feed screw nut centre bore be provided with The I.S.S raceway that ball body matches, feed screw nut excircle is arranged to the multidiameter that diameter is different, the most successively For installing the first paragraph axle of rotor-position sensor, the second segment axle of the second bearing is installed, the 3rd of rotor yoke is installed Section axle and the 4th section of axle installing clutch shaft bearing, a diameter of maximum of the 3rd section of axle, the 4th section of axle and the diameter phase of second segment axle With, a diameter of minimum of first paragraph axle.
Leading screw screw rod described in technical scheme is a cylindrical element, on the external cylindrical surface of the right-hand member of leading screw screw rod vertically Being provided with right-hand member is unlimited groove, and the external cylindrical surface on the left of open channel is provided with the external thread type rolling matched with ball body Road, the external thread type raceway on leading screw screw rod is identical with the I.S.S roller path structure on feed screw nut, the right-hand member of leading screw screw rod Axially disposed have ladder blind hole, and left end is axially disposed for left blind hole that is the 3rd ladder blind hole, the ladder blind hole of right-hand member and a left side End left blind hole between axially disposed have by both connect intercommunicating pore, the ladder blind hole of right-hand member, intercommunicating pore, left end a left side blind Hole and the axis of rotation conllinear of leading screw screw rod, the ladder blind hole of right-hand member is followed successively by the first ladder blind hole and the second ladder from right to left Blind hole.
Leading screw screw drive described in technical scheme includes motor stator winding, rotor, rotor Yoke and motor rotor magnetic steel.Described rotor yoke is sleeved on the 3rd section of axle of feed screw nut and uses bonded, Motor rotor magnetic steel is sleeved on the outer ring of rotor yoke as stationary fit, the outer ring of motor rotor magnetic steel and rotor Being matched in clearance between inner ring, the outer ring of rotor and the inner ring of casing are matched in clearance, and it is fixed that rotor is surrounded with motor Sub-winding, motor stator winding is that stationary fit is connected with the inner ring of casing.
Input sealing mechanism described in technical scheme include dust cover, the first return spring, the second return spring with Rubber packing.Dust cover, the first return spring, the second return spring and rubber packing are placed sequentially in leading screw screw rod from right to left The first ladder blind hole in, dust cover, the first return spring, the second return spring contact connection successively with rubber packing, dust-proof Cover, the first return spring, the second return spring are sleeved on the input push rod in brake pedal operation mechanism with rubber packing, rubber The left side of glue liner contacts connection with the right side of plunger push rod.
Stroke return mechanism described in technical scheme is by stroke return spring, stroke return spring back seat and stroke return Spring front stall is constituted.Described stroke return spring back seat is disc-shaped structure part, by the annulus of the torus of left end Yu right-hand member Dish forms, and toric right-hand member is connected with the left side of circle ring disk, and the right side of circle ring disk is annular plane, torus Axis of rotation and circle ring disk on the axis of rotation conllinear of central through hole, toric internal orifice dimension leads to the center on circle ring disk The aperture in hole is equal, defeated in the aperture of the central through hole on toric internal orifice dimension or circle ring disk and leading screw screw mechanism The left end rod diameter going out push rod is equal, and it is convex that toric surrounding is i.e. inwardly provided with two circle torus from the edge of circle ring disk Rise, between two circle torus projections, be arranged to place the spring retainer groove of stroke return spring.One end of stroke return spring Being placed in the spring retainer groove of stroke return spring back seat, the other end of stroke return spring is placed on stroke return spring In the spring retainer groove of front stall, stroke return spring front stall is connected by screw and drive end bearing bracket are fixing, stroke return spring back seat On central through hole with output push rod be equipped with as being slidably matched.
Hydraulic control unit described in technical scheme is by compensating controlling organization and pressure of wheel braking cylinder governor motion forms.Described Compensation controlling organization be to include energy storage pressure sensor, relief valve, accumulator, check valve, hydraulic pump, pump motor and compensation Electromagnetic valve.Described hydraulic pump and pump motor are mechanically connected, the oil-in of hydraulic pump respectively with oil-out and the braking of relief valve The oil-in pipeline of the oil storage cup in master cylinder assembly connects, and the oil-out of hydraulic pump is connected with the oil-in pipeline of check valve, single To the oil-out of valve respectively with hydraulic fluid port, the hydraulic fluid port of energy storage pressure sensor, the oil-in of compensation electromagnetic valve and the peace of accumulator The oil-in pipeline of full valve connects, and the oil-out of compensation electromagnetic valve and a chamber of master cylinder are connected with the oil-out pipeline in b chamber； Described pressure of wheel braking cylinder governor motion is to be stored by the first low pressure accumulator, the first low pressure accumulator normally closed solenoid valve, the second low pressure Energy device, the second low pressure accumulator normally closed solenoid valve, the first pressure regulate normally open solenoid valve, the second pressure regulates normally open solenoid valve, 3rd pressure regulation normally open solenoid valve, the 4th pressure regulation normally open solenoid valve and master cylinder pressure sensor are constituted.Master cylinder (2) The oil-out in a chamber and the oil-in of the first low pressure accumulator normally closed solenoid valve, the oil-feed of the first pressure regulation normally open solenoid valve The oil-in pipeline of mouth, the oil-in of the second pressure regulation normally open solenoid valve and master cylinder pressure sensor connects, the b of master cylinder The oil-out in chamber and the oil-in of the second low pressure accumulator normally closed solenoid valve, the 3rd pressure regulation normally open solenoid valve oil-in with The oil-in pipeline of the 4th pressure regulation normally open solenoid valve connects, the first low pressure accumulator normally closed solenoid valve, the second low pressure accumulation of energy Device normally closed solenoid valve oil-out respectively with the first low pressure accumulator, the hydraulic fluid port pipeline of the second low pressure accumulator connect, the first pressure Regulation normally open solenoid valve, the second pressure regulation normally open solenoid valve, the 3rd pressure regulation normally open solenoid valve and the regulation of the 4th pressure are often The oil-out of open electromagnetic valve respectively with front left wheel, front right wheel, the wheel cylinder oil-in pipe of rear left wheel and rear right wheel Road connects.
The input that input push rod in brake pedal operation mechanism described in technical scheme inserts electric machine actuating mechanism is close Ball pivot is used to be connected in sealing mechanism and with the right-hand member of the plunger push rod in the leading screw screw mechanism of electric machine actuating mechanism, master cylinder The input of the master cylinder in assembly utilizes studs to be fixedly linked with the output push rod of electric machine actuating mechanism, master cylinder Axis of rotation and output push rod with input push rod axis of rotation conllinear, a chamber oil-out of master cylinder and hydraulic control list The oil-out of compensation electromagnetic valve, first oil-in of low pressure accumulator normally closed solenoid valve and entering of master cylinder pressure sensor in unit Hydraulic fluid port pipeline connects, the oil-out of compensation electromagnetic valve in the oil-out in master cylinder b chamber and hydraulic control unit, master cylinder pressure The oil-in of sensor and the oil-in pipeline of the second low pressure accumulator normally closed solenoid valve connect；Input in electronic control unit Signal acquisition processing circuit is stepped on the master cylinder pressure sensor in hydraulic control unit, energy storage pressure sensor, braking respectively Brake pedal displacement transducer in plate operating mechanism, the brake switch in brake pedal operation mechanism, current sensor, rotor Position sensor is connected with power module circuitry electric wire；Control signal output circuit in electronic control unit respectively with hydraulic pressure control Pump motor in unit processed, the first pressure regulation normally open solenoid valve, the second pressure regulation normally open solenoid valve, the 3rd pressure often regulate Open electromagnetic valve, the 4th pressure regulation normally open solenoid valve, compensation electromagnetic valve, the second low pressure accumulator normally closed solenoid valve, the first low pressure The control circuit electric wire of accumulator normally closed solenoid valve, power module and motor drive controller connects；In electronic control unit Fault diagnosis circuit be connected with power module circuitry；The signals collecting end of the current sensor in motor drive controller and electricity The signal output part circuit lines of the actuating motor in machine actuator connects, and the signal output part of current sensor drives with motor The first input end circuit lines of the control circuit in movement controller connects, the second input of control circuit and Electronic Control list The circuit of output terminal electric wire of the control signal output circuit in unit connects, the outfan of control circuit and the input of drive circuit Circuit lines connects, and the outfan of drive circuit connects with the signal input part circuit lines of the actuating motor in electric machine actuating mechanism Connect.
Compared with prior art the invention has the beneficial effects as follows:
The leading screw inside screw of integrated electric control master cylinder drive system the most of the present invention uses stroke adjustment Mechanism, when motor reversal drives leading screw screw retreats, pedal sense is more preferable；
The motor angular displacement of integrated electric control master cylinder drive system the most of the present invention be easily achieved accurately with With operator brake pedal angular displacement signal, thus realize different braking functions；
Integrated electric control master cylinder drive system highly versatile the most of the present invention, is applicable to various vehicle.
Integrated electric control master cylinder drive system the most of the present invention is when fail-safe mode, and driver can be only Vertical enforcement is braked, it is ensured that automotive safety reliability service.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is that integrated electric control master cylinder driving system structure of the present invention forms schematic block diagram.
Fig. 2 is the electric machine actuating mechanism structure composition in integrated electric control master cylinder drive system of the present invention Front view.
Fig. 3 is the hydraulic control unit structure composition in integrated electric control master cylinder drive system of the present invention Schematic diagram.
Fig. 4 is the structure group of the input sealing mechanism in integrated electric control master cylinder drive system of the present invention Become partial enlarged drawing.
Fig. 5-a is the structure composition of the plunger push rod in integrated electric control master cylinder drive system of the present invention Full sectional view on front view.
Fig. 5-b is the plunger push rod structure composition in integrated electric control master cylinder drive system of the present invention Front view.
Fig. 6-a is the structure composition of the rubber packing in integrated electric control master cylinder drive system of the present invention Full sectional view on front view.
Fig. 6-b is the rubber packing structure composition in integrated electric control master cylinder drive system of the present invention Front view.
Fig. 7-a is the structure of spring the first skeleton in integrated electric control master cylinder drive system of the present invention Full sectional view on composition front view.
Fig. 7-b is spring the first framing structure group in integrated electric control master cylinder drive system of the present invention The front view become.
In figure: 1. oil storage cup, 2. master cylinder, 3. drive end bearing bracket, 4. stroke return spring, No. 5.1 bearings, 6. motor stators Winding, 7. casing, 8. rotor, No. 9.2 bearings, 10. in end cap, 11. rear end caps, 12. rotor-position sensors, 13. Thick stick nut, 14. stop screws, 15. dust-proof cushions, 16. input push rods, 17. brake pedal position sensor, 18. brake switches, 19. brake pedals, 20. leading screw screw rods, 21. first return springs, 22. second return springs, 23. rubber packings, 24. plunger tops Bar, 25. stroke adjustment spring bases, 26. stroke adjustment springs, 27. ball bodies, 28. rotor yokes, 29. rotor magnetic Steel, 30. stroke adjustment push rods, 31. adjusting bases, 32. rubber reaction plates, 33. output push rods, 34. stroke return spring back seats, 35. stroke return spring front stalls, 36. energy storage pressure sensors, 37. relief valve, 38. accumulators, 39. check valves, 40. hydraulic pressure Pump, 41. pump motors, 42. second low pressure accumulator normally closed solenoid valves, 43. second low pressure accumulators, 44. master cylinder pressure sensors, 45. first pressure regulation normally open solenoid valves, 46. second pressure regulation normally open solenoid valves, 47. first low pressure accumulators, 48. the 3rd Pressure regulation normally open solenoid valve, 49. first low pressure accumulator normally closed solenoid valves, 50. the 4th pressure regulation normally open solenoid valves, 51. Compensation electromagnetic valve.A. brake pedal operation mechanism, B. electric machine actuating mechanism, C. brake master cylinder assy, D. hydraulic control unit, E. Electronic control unit, F. motor drive controller, a. master cylinder ante-chamber, b. master cylinder back cavity, 52. master cylinder the first plungers, 53. first posts Plug return spring, 54. first plunger return spring skeletons, 55. master cylinder the second plungers, 56. second plunger return springs, 57. the Two return spring skeletons, 58. master cylinder housings, 59. spring the first skeletons, 60. spring the second skeletons, 61. pads.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is explained in detail:
Refering to Fig. 1, integrated electric control master cylinder drive system of the present invention includes brake pedal operation machine Structure A, electric machine actuating mechanism B, brake master cylinder assy C, hydraulic control unit D, electronic control unit E and motor drive controller F.
Described brake pedal operation mechanism A is mainly by input push rod 16, brake pedal position sensor 17, brake switch 18 and brake pedal 19 form.
The upper end of brake pedal 19 has one section of groove with bolts with the right-hand member of input push rod 16, position, brake pedal angle Put sensor 17 to be connected with brake pedal 19 top rotating shaft screw bolt, make the rotating part of brake pedal angular position pick up 17 with Brake pedal rotating shaft rotates together；Brake switch 18 contacts connection with the upper position, upper end of brake pedal 19, exports push rod 16 Left end be connected with plunger push rod 24 ball pivot in described electric machine actuating mechanism B.
Refering to Fig. 2, described electric machine actuating mechanism B mainly by leading screw screw mechanism, stroke return mechanism, input sealer Structure, shell mechanism, leading screw screw drive, clutch shaft bearing the 5, second bearing 9, rotor-position sensor 12 form.
Described leading screw screw mechanism is mainly by feed screw nut 13, leading screw screw rod 20, plunger push rod 24, stroke adjustment spring Seat 25, stroke adjustment spring 26, ball body 27, stroke adjustment push rod 30, adjusting base 31, rubber reaction plate 32 and output push rod 33。
The described cylindrical element that feed screw nut 13 is a hollow, the left end of feed screw nut 13 centre bore is provided with and ball body The I.S.S raceway that 27 match, feed screw nut 13 excircle is arranged to the multidiameter that diameter is different, is followed successively by from right to left The first paragraph axle of rotor-position sensor 12 is installed, the second segment axle of No. 2 bearings 9 is installed, the of rotor yoke 28 is installed Three sections of axles and the 4th section of axle of No. 1 bearing 5 of installation, wherein the diameter maximum of the 3rd section of axle, the 4th section of axle and second segment axle is straight Footpath is identical, and diameter is only second to the 3rd section of axle, and the diameter of first paragraph axle is minimum.
Described leading screw screw rod 20 is a cylindrical element, and axially disposed on the external cylindrical surface of the right-hand member of leading screw screw rod 20 have Right-hand member is unlimited groove, and the face of cylinder of leading screw screw rod 20 open channel is provided with the external thread type rolling matched with ball body 27 Road, the external thread type raceway on leading screw screw rod 20 is identical with the I.S.S roller path structure on feed screw nut 13, leading screw screw rod 20 The axially disposed ladder blind hole for different-diameter of right-hand member, left end is axially disposed for left blind hole (the 3rd ladder blind hole), right It is provided with intercommunicating pore between ladder blind hole and the left blind hole of left end of end both to be connected, the ladder blind hole of right-hand member, intercommunicating pore, a left side The left blind hole of end and the axis of rotation conllinear of leading screw screw rod 20, it is blind that the ladder blind hole of right-hand member is followed successively by the first ladder from right to left Hole, the second ladder blind hole.
Described stroke adjustment push rod 30 is multidiameter like members, stroke adjustment push rod 30 by left section of axle, stage casing axle with right section Axle forms, and left section of axle is small diameter shaft, stage casing axle major diameter axle, and right section of axle is middle diameter shaft, and the diameter of right section of axle is between left section Between the diameter of axle and stage casing axle, right section of axle is arranged to install the spacing of stroke adjustment spring 26 left end with the junction of stage casing axle Groove.
Described output push rod 33 is connected with right-hand member disk by left end push rod and forms, left end push rod and right-hand member disk Axis of rotation conllinear, the diameter of right-hand member disk, more than the diameter of left end push rod, the right side of right-hand member disk is provided with installation rubber Glue reaction plate 32 groove equipped with adjusting base 31 left end.
Described adjusting base 31 is multidiameter, and left end diameter is identical with output push rod 33 right-hand member groove diameter, and right-hand member is straight Footpath is identical with leading screw screw rod 20 the 3rd blind hole diameter, and there is through hole centre；The axis of rotation conllinear of left end shaft, right-hand member axle and through hole.
Feed screw nut 13 is sleeved on leading screw screw rod 20 by ball body 27 and connects for rolling, and stroke adjustment spring base 25 fills Enter in the right-hand member of leading screw screw rod 20 first ladder blind hole, the first ladder blind hole of stroke adjustment spring base 25 and leading screw screw rod 20 it Between connect for matched in clearance, plunger push rod 24 embeds in the groove of stroke adjustment spring base 25 as being slidably matched, plunger push rod 24 Right-hand member with in brake pedal operation mechanism A input push rod 16 left end be connected by ball pivot, stroke adjustment spring base 25 Left end is provided with the recessed circle of annular stop, and the right-hand member of stroke adjustment spring 26 is recessed with the left end annular stop of stroke adjustment spring base 25 Circle is connected in the first ladder blind hole embedding leading screw screw rod 20；It is blind that the left end embedding of stroke adjustment spring 26 is arranged on the second ladder In the annular stop groove of the stroke adjustment push rod 30 in hole, the left end of the left section of axle that stroke adjustment push rod 30 diameter is less embeds In the intercommunicating pore of leading screw screw rod 20, and it extend in the left blind hole (the 3rd ladder blind hole) of leading screw screw rod 20；Adjusting base 31 is Annular rubber block, is embedded in the left blind hole (the 3rd ladder blind hole) of leading screw screw rod 20, and stroke adjustment push rod 30 diameter is less The left end of left section of axle insert the interstitial hole of adjusting base 31 and contact with the right side of round rubber reaction plate 32, rubber is anti- Feedback dish 32 connects for contact in embedding the groove on the right-hand member disk of output push rod 33；The right-hand member disk of output push rod 33 loads silk In the left blind hole (the 3rd ladder blind hole) of thick stick screw rod 20, in the left end push rod of output push rod 33 and stroke return spring back seat 34 Between neck aperture coordinate for being slidably connected.
Described stroke return mechanism is by stroke return spring 4, stroke return spring back seat 34, stroke return spring front stall 35 are constituted.
Described stroke return spring back seat 34 is disc-shaped structure part, by the circle ring disk group of the torus of left end Yu right-hand member Becoming, toric right-hand member is connected with the left side of circle ring disk, and the right side of circle ring disk is annular plane, toric time The axis of rotation conllinear of the central through hole on shaft axis and circle ring disk, toric internal orifice dimension and the central through hole on circle ring disk Aperture is equal, the aperture of the central through hole on toric internal orifice dimension or circle ring disk and with the output in leading screw screw mechanism The left end rod diameter of push rod 33 is equal, and it is convex that toric surrounding is i.e. inwardly provided with two circle torus from the edge of circle ring disk Rise, between two circle torus projections, be arranged to place the spring retainer groove of stroke return spring 4.
One end of stroke return spring 4 is placed in stroke return spring back seat 34 spring retainer groove, stroke return bullet The left end of spring 4 is placed in stroke return spring front stall 35 spring retainer groove, and stroke return spring front stall 35 passes through screw with front End cap 3 is connected, and the central through hole on stroke return spring back seat 34 is equipped with output push rod 33 phase, stroke return spring back seat The left side of the right side of 34 and leading screw screw rod 20 for contacting connection, the centre of gyration of stroke return mechanism and leading screw screw mechanism Centre of gyration conllinear.
Described input sealing mechanism is by dust cover the 15, first return spring the 21, second return spring 22, rubber packing 23, spring the first skeleton 59, spring the second skeleton 60, pad 61 form.
Described dust cover 15 is cylindrical revolving body, and there are cylindrical bore, the external diameter of dust cover 15 and leading screw spiral shell in centre First blind hole internal diameter size of bar 20 is identical, and the internal orifice dimension of dust cover 15 is identical with the external diameter size of input push rod 16, dust cover The internal diameter of 15 and external diameter center are on same axis.
Refering to Fig. 5, described plunger push rod 24 is multidiameter class formation part, be from left to right followed successively by first paragraph axle, second Section axle, the 3rd section of axle, the 4th section of axle and platform dish composition, right-hand member is fluted, has escape in the middle of the 4th section of axle；First paragraph axle, Two-stage nitration axle, the 3rd section of axle, the 4th section of axle and the axis of rotation conllinear of platform dish.
Refering to Fig. 6, described rubber packing 23 is rubber shell part, is made up of three parts, is from left to right followed successively by first Section revolving body, second segment revolving body, the 3rd section of revolving body.Wherein left end is the first revolving body, and mid portion has inclined plane groove, groove Left end diameter is big, and right-hand member diameter is little, has a projection enclosing over-effect, have in the middle of revolving body between groove and left end plane Through hole, and it is provided with the pad groove installing pad；Centre is second segment revolving body, and diameter reduces the most gently, and inside is Through-hole structure；Right-hand member is the 3rd section of revolving body, and there is a circle groove at low order end edge, and centre is through-hole structure, this through-hole diameter from Left-to-right mild increase, rear right somewhat reduces；The axis of rotation conllinear of three revolving bodies.
Refering to Fig. 7, described spring the second skeleton 60 is thin-wall part, is made up of three parts, be from left to right followed successively by disk, Thin cylinder and ring flange left end are disk, have the circular hole being relatively large in diameter in the middle of disk；Centre is thin cylinder, diameter from a left side to Right mild reduction；Right-hand member is ring flange；The axis of rotation conllinear of disk, thin cylinder and ring flange.
Described spring the first skeleton 59 is cylinder thin-wall part, is made up of left end cylinder and right-hand member ring flange；Left end cylinder On have through hole, right-hand member ring flange be used for place the first return spring 21.
Dust cover 15, spring the first skeleton the 59, first return spring 21, spring the second skeleton the 60, second return spring 22, Rubber packing 23 is placed sequentially in the first ladder blind hole of leading screw screw rod 20 from right to left, and spring the second skeleton 60 embeds rubber Liner 23 right-hand member, pad 61 embeds in the left end groove of rubber packing 23；Spring the first skeleton the 59, first return spring 21, bullet Spring the second skeleton the 60, second return spring 22, pad 61 contact connection successively, and input push rod 16 inserts dust cover 15, bullet Spring the first skeleton the 59, first return spring 21, spring the second skeleton the 60, second return spring 22, pad 61, rubber packing 23 In central through hole, the left end of input push rod 16 uses ball pivot to be connected with the right-hand member groove of plunger push rod 24, a left side for rubber packing 23 End face contacts connection with the right side of plunger push rod 24.
Described shell mechanism is made up of drive end bearing bracket 3, casing 7, middle end cap 10, rear end cap 11 and stop screw 14.
The described shell structure part that drive end bearing bracket 3 is an annulus tubular, by left end barrel, stage casing cylinder and right-hand member annular Disk forms；The center of left end barrel is provided with through hole, and the periphery of right-hand member circular disk is provided with bolt hole equably, right First spacing ring equipped with casing 7 and equipped with No. 1 bearing 5 the it is provided with from outside to inside on the right side of end circular disk Two spacing rings, right-hand member circular disk is connected with the right-hand member of stage casing cylinder, left end barrel, stage casing cylinder, right-hand member circular disk, The centre of gyration conllinear of the through hole of left end barrel, the first spacing ring and the second spacing ring.
Described middle end cap 10 is an annular dish class formation part, and the center of middle end cap 10 is provided with middle end cap central Through hole, the left side of middle end cap 10 is provided with around middle end cap central through hole installation No. 2 bearings 9 second from the inside to the outside spacing Ring body and the first spacing ring body installing casing 7, on the middle end cap 10 between the second spacing ring body and the first spacing ring body uniformly 6 second bolt holes are distributed, the middle end cap 10 around the first spacing ring body has been evenly distributed 6 the first bolts lead to Hole.
Described rear end cap 11 is double cylinder stairstepping housing components, and right-hand member is right cylinder, the right barrel center of right cylinder It is provided with right cylinder through hole；Stage casing is middle cylinder, and the right barrel center of middle cylinder is provided with middle cylinder through hole, middle cylinder straight Footpath is more than the diameter of right cylinder, and middle cylinder connects as one with right cylinder, middle cylinder through-hole diameter and the barrel diameter of right cylinder Equal；The left end of rear end cap 11 is provided with left end ring flange, and ring flange has been evenly distributed 6 bolt holes；Middle cylinder, in Cylinder through hole, right cylinder, right cylinder through hole and the axis of rotation conllinear of left end ring flange.
Casing 7 is annular housing component, and casing 7 two ends are provided with the left flange of the identical annular being parallel to each other of structure Dish, right ring flange, left flange plate, right ring flange centre of gyration line and casing 7 centre of gyration line conllinear.The left end of casing 7 and front Right-hand member circular disk in end cap 3 the first spacing ring be equipped with and use that bolt is fixing connects, the right-hand member of casing 7 and middle end cap The first spacing ring body of 10 is equipped with and uses that bolt is fixing connects, the left end ring flange of rear end cap 11 and the second spacing ring body and the The right side of the middle end cap 10 between one spacing ring body uses the fixing connection of bolt, stop screw 14 and the spacing hole of rear end cap 11 Being connected, the right cylinder through hole of rear end cap 11 is sleeved on input push rod 16.
The right-hand member circular disk of drive end bearing bracket 3 is with bolts with the left flange plate of casing 7, the right ring flange of casing 7 with Middle end cap 10 is with bolts, and the left end ring flange of rear end cap 11 is with bolts with middle end cap 10, drive end bearing bracket 3, casing 7, middle end cap 10 and the axis of rotation conllinear of rear end cap 11.
Stroke return mechanism is arranged in drive end bearing bracket 3, and leading screw screw mechanism uses clutch shaft bearing 5 to install with the second bearing 9 It is connected for rolling with on middle end cap 10 at drive end bearing bracket 3, and is among rear end cap 11, the stroke return bullet in stroke return mechanism The right side of spring back seat 34 contacts connection, leading screw screw drive with the left side of the leading screw screw rod 20 in leading screw screw mechanism For bonded on 3rd section of axle of the feed screw nut 13 being sleeved in leading screw screw mechanism, rotor-position sensor 12 is sleeved on silk On the first paragraph axle of thick stick nut 13, and being in the middle cylinder of rear end cap 11, input sealing mechanism is arranged on leading screw screw rod 20 The first ladder blind hole in.
Described leading screw screw drive is turned by motor stator winding 6, rotor 8, rotor yoke 28, motor Sub-magnet steel 29 forms.
Described rotor yoke 28 is sleeved on the 3rd section of axle of feed screw nut 13 and uses and bonded realizes power Transmission purpose, it is stationary fit that motor rotor magnetic steel 29 is sleeved on the outer ring of rotor yoke 28, motor rotor magnetic steel 29 Being matched in clearance between the inner ring of outer ring and rotor 8, the outer ring of rotor 8 is connected with the inner ring matched in clearance of casing 7, Rotor 8 be surrounded with motor stator winding 6.
The inner ring of described rotor-position sensor 12 is sleeved on the first paragraph axle of feed screw nut 13, and is in rear end cap In the right cylinder of 11, the outer ring of rotor-position sensor 12 is connected with the middle cylinder matched in clearance of rear end cap 11；Clutch shaft bearing 5 Inner ring is that interference fit is connected with the 4th section of axle of feed screw nut 13, the outer collar bearing of clutch shaft bearing 5 and second on drive end bearing bracket 3 Spacing ring body is that interference fit connects；The inner bearing collar of the second bearing 9 is connected with the second segment axle interference fit of leading screw screw rod, the The outer collar bearing of two bearings 9 is that interference fit is connected with the second spacing ring body on middle end cap 10.
Described master cylinder 2 is returned by master cylinder housing 58, master cylinder the first plunger 52, master cylinder the second piston the 55, first plunger 57 groups of spring the 53, second plunger return spring the 56, first plunger return spring skeleton the 54, the second plunger return spring skeleton in position Become.Wherein master cylinder housing 58 is cylindrical shape symmetrical casting, the center of master cylinder housing 58 be provided with from right to left the first blind hole, Two blind holes, the 3rd blind hole, wherein the first blind hole is identical with the 3rd blind hole diameter, respectively with master cylinder the first plunger 52 and master cylinder second Piston 55 contact connects, and the second blind hole is between the first blind hole and the 3rd blind hole, and diameter is blind slightly larger than the first blind hole and the 3rd, main The top of the housing wall of the left end of the first blind hole of cylinder housing 58 and the right-hand member of the 3rd blind hole is provided with two oil-ins, master cylinder shell The left end of the second blind hole of body 58, the bottom of housing wall of left end of the 3rd blind hole are provided with two oil-outs；
Described master cylinder the first plunger 52 and master cylinder the second piston 55 are cylinder symmetrical casting, master cylinder the first plunger 52 left end Being provided with deeper groove, groove center axis is provided with the first guide rod, guide rod left end has circle to emit, and right-hand member has screw thread；Its In the first guide rod right-hand member be connected with screwed hole rigid body with center, master cylinder the first plunger 52 groove left side screw thread；Master cylinder second Piston 55 left end is provided with deeper groove, and groove center axis is provided with the second guide rod, and guide rod left end has circle to emit, right-hand member There is screw thread；Wherein the second guide rod right-hand member is with center, master cylinder the second piston 55 groove left side screw thread with screwed hole rigid body even Connect；The central axis of the first guide rod and master cylinder the first plunger 52 central axis and the second guide rod and master cylinder the second piston 55 is same On bar centre of gyration axis；
The first described plunger return spring skeleton 54 and the second plunger return spring skeleton 57 are columnar structured part, by Cylindrical shell forms with the otic placode of annular, and the right-hand member center of cylindrical shell is provided with than the first guide rod and the second guide rod The bigger through hole of smaller diameter rods, the otic placode of annular is connected with cylindrical shell left end, the centre of gyration of otic placode and circle The centre of gyration of barrel-type casing on same centre of gyration axis, the first plunger return spring skeleton 54 and the second plunger return Spring skeleton 57 is sleeved on the major diameter bar of the first guide rod and the second guide rod.
The input of master cylinder 2 passes through double threaded screw static connection with the output push rod 33 of electric machine actuating mechanism B；Output pushes away The left side of bar 33 contacts connection with the right side of master cylinder the first plunger 52；First plunger return spring 53 and the first plunger return Spring skeleton 54 is sleeved on the first guide rod of master cylinder the first plunger 52 successively；Master cylinder the first plunger 52 loads master cylinder housing 58 In first blind hole；The right side of master cylinder the second piston 55 contacts connection with the left side of the first plunger return spring skeleton 54；The Two plunger return springs 56 and the second plunger return spring skeleton 57 are sleeved on the second guide rod of master cylinder the second plunger 55 successively； Master cylinder the second plunger 55 loads in the 3rd blind hole of master cylinder housing 58, the left side of the second plunger return spring skeleton 57 and master cylinder The right side contact of housing 58 groove connects；Two oil-outs of oil storage cup 1 are connected with one end interference of special hose, special soft The other end of pipe is by being connected with two oil-ins on master cylinder housing 58 with the nut of through hole；The oil return opening of oil storage cup 1 with One end interference of special hose connects.
Refering to Fig. 3, described hydraulic control unit D by compensating controlling organization and pressure of wheel braking cylinder governor motion forms；
Described compensation controlling organization be by energy storage pressure sensor 36, relief valve 37, accumulator 38, check valve 39, Hydraulic pump 40, pump motor 41 and compensation electromagnetic valve 51 form.
Described compensation electromagnetic valve 51 is high speed normally closed switch valve or the normally closed linear valve of high speed；
Described hydraulic pump 40 is mechanically connected with pump motor 41, and pump motor 41 drives hydraulic pump 40 to export high-pressure brake liquid, Hydraulic pump 40 oil-in oil-in pipeline with relief valve 37 oil-out with the oil storage cup 1 in brake master cylinder assy C successively is connected, Hydraulic pump 40 oil-out is connected with check valve 39 oil-in pipeline, check valve 39 oil-out successively with accumulator 38 hydraulic fluid port, accumulation of energy Device pressure transducer 36 hydraulic fluid port, compensation electromagnetic valve 51 oil-in are connected with the oil-in pipeline of relief valve 37, compensation electromagnetic valve 51 Oil-out and a chamber of master cylinder 2 be connected with the oil-out pipeline in b chamber.
Described pressure of wheel braking cylinder governor motion is by first low pressure accumulator the 47, first low pressure accumulator normally closed solenoid valve 49, second low pressure accumulator the 43, second low pressure accumulator normally closed solenoid valve the 42, first pressure regulation normally open solenoid valve 45, second Pressure regulation normally open solenoid valve the 46, the 3rd pressure regulation normally open solenoid valve the 48, the 4th pressure regulation normally open solenoid valve 50 and master cylinder Pressure transducer 44 is constituted.
Described first low pressure accumulator normally closed solenoid valve the 49, second low pressure accumulator normally closed solenoid valve 42 is speed-sensitive switch Valve, described first pressure regulation normally open solenoid valve the 45, second pressure regulation normally open solenoid valve the 46, the 3rd pressure regulates normally opened electromagnetism Valve 48 and the 4th pressure regulation normally open solenoid valve 50 are high-speed switch valve or high-speed linear valve；
The oil-out in a chamber of master cylinder 2 and the oil-in of the first low pressure accumulator normally closed solenoid valve 49, the first pressure are adjusted The joint oil-in of normally open solenoid valve 45, the second pressure regulation oil-in of normally open solenoid valve 46 and entering of master cylinder pressure sensor 44 Hydraulic fluid port pipeline connects, the oil-out in the b chamber of master cylinder 2 and the oil-in of the second low pressure accumulator normally closed solenoid valve 42, the 3rd The oil-in of pressure regulation normally open solenoid valve 48 and the oil-in pipeline of the 4th pressure regulation normally open solenoid valve 50 connect, and first is low Pressure accumulator normally closed solenoid valve the 49, second low pressure accumulator normally closed solenoid valve 42 oil-out successively with the first low pressure accumulator 47, The hydraulic fluid port pipeline of the second low pressure accumulator 43 connects, and first pressure regulation normally open solenoid valve the 45, second pressure regulates normally opened electromagnetism Valve the 46, the 3rd pressure regulation normally open solenoid valve 48 and the 4th pressure regulate normally open solenoid valve 50 oil-out successively and front left wheel, Front right wheel, rear left wheel are connected with the wheel cylinder oil-in pipeline of rear right wheel.
Described electronic control unit E is by CPU, input signal acquisition process circuit, control signal output electricity Road, fault diagnosis circuit and power module are constituted.
Described power module is provided with output port of power source 1, output port of power source 2, output port of power source 3, power supply output Port 4 forms, and this module is that electronic control unit E powers；
Described fault diagnosis circuit is provided with supply input port and fault-signal output port, and this module is monitored respectively in real time Whether individual parts break down, and in time fault-signal are passed to CPU；
Freescale chip that described CPU uses model to be MC9S12XS128 (or have 17 inputs/defeated Go out the singlechip chip of passage) it is provided with energization input, fault-signal input port, gathers signal input port and control signal Output port；CPU can receive the status signal of fault-signal and collection, by the inside relevant control algorithm to letter Number process obtains corresponding control signal.
Described input signal acquisition process circuit is provided with supply input port, signals collecting port 1, signals collecting port 2, signals collecting port 3, signals collecting port 4, signals collecting port 5, signals collecting port 6 and signal output port；Signal The acquisition process circuit signal by 8 collection terminal mouth each sensors of Real-time Collection, and signal is passed through signal output port Send CPU to；
Described control signal output circuit is provided with supply input port, control signal receiving port, control signal output Port 1, control signal output port 2, control signal output port 3, control signal output port 4, control signal output port 5, control signal output port 6, control signal output port 7, control signal output port 8, control signal output port 9；Control Signal output apparatus processed accepts to derive from the control signal of CPU by control signal receiving port, and by 5 Control signal is sent to each and performs controller by control signal output port；
The output port of power source 1 of described power module, output port of power source 2, output port of power source 3, power output end Mouthfuls 4 respectively with fault diagnosis circuit, CPU, input signal acquisition process circuit, the confession of control signal output circuit Electrical input mouth electric wire connects；
The fault-signal input port of CPU connects with the fault-signal output port electric wire of fault diagnosis circuit Connecing, the signal output port electric wire gathering signal input port and input signal acquisition process circuit of CPU is even Connecing, the control signal output port of CPU connects with the control signal receiving port electric wire of control signal output circuit Connect；The signals collecting port 1 of described input signal acquisition process circuit is with the outfan electric wire of master cylinder pressure sensor 44 even Connecing, signals collecting port 2 is connected with the outfan electric wire of energy storage pressure sensor 36, signals collecting port 3 and rotor-position The outfan electric wire of sensor 12 connects, and signals collecting port 4 is connected with the outfan electric wire of brake switch 18, signals collecting end Mouth 5 is connected with the outfan electric wire of brake pedal position sensor 17, signals collecting port 6 and the current signal of current sensor Output port 1 electric wire connects；
The control signal output port 1 of described control signal output circuit and the control electricity in motor drive controller F Road control signal input port 1 electric wire connects, control signal output port 2 and the input of the first pressure regulation normally open solenoid valve 45 End electric wire connects, and control signal output port 3 is connected with the input electric wire of the second pressure regulation normally open solenoid valve 46, controls letter Number output port 4 is connected with the input electric wire of the 3rd pressure regulation normally open solenoid valve 48, control signal output port 5 and the 4th The input electric wire of pressure regulation normally open solenoid valve 50 connects, control signal output port 6 and the input port electric wire of pump motor Connecting, control signal output port 7 is connected with the signal input port electric wire of compensation electromagnetic valve 51, control signal output port 8 It is connected with the input electric wire of the first low pressure accumulator normally closed solenoid valve 49, control signal output port 9 and the second low pressure accumulation of energy The input electric wire of device normally closed solenoid valve 42 connects.
Described motor drive controller F is made up of current sensor, control circuit, drive circuit.
Described current sensor is provided with current signal and gathers port, current signal output end mouth 1, current signal output Port 2, current sensor gathers the current signal of actuating motor, and transmits a signal to the control in motor drive controller F Signal acquisition processing circuit in circuit and electronic control unit E；
Described control circuit module is provided with control signal input port 1, control signal input port 2 and control signal Output port, control circuit module Real-time Collection input signal, and control signal is exported in real time to drive circuit；
Described drive circuit module is provided with signal input port and drives signal output port, and drive circuit module is real Time receive control signal, and in real time output drive signal；
The current signal of described current sensor module gathers port 1 and the actuating motor electricity in electric machine actuating mechanism B Line connects, and current signal output end mouth 2 is connected with control signal input port 2 electric wire of control circuit；Drive circuit module Signal input port is connected with the control signal output port electric wire of control circuit module, and the driving signal of drive circuit module is defeated Go out port to be connected with the actuating motor electric wire in electric machine actuating mechanism B.
The work process of integrated electric control master cylinder drive system of the present invention is as follows:
Refering to Fig. 1 and Fig. 2, vehicle traveling process is frequently encountered operating mode complicated and changeable, according to concrete vehicle condition, needs Driver is wanted to make the brake operating adapted therewith, such as slowly when light brake, the braking of slow moderate, high-speed running automobile Short time brake hard is slowed down and long-time hard brake stop etc..When running car is in normal operating conditions, driver steps on When automobile is implemented braking by lower brake pedal 19, brake pedal 19 promotes input push rod 16, input push rod 16 to extrude plunger push rod 24, plunger push rod 24 crush stroke regulation spring base 25 move forward, stroke adjustment spring base 25 move forward compression travel regulation spring 26, Stroke adjustment spring 26 is applied on stroke adjustment push rod 30, and stroke adjustment push rod 30 moves forward and gradually eliminates and rubber reaction plate 32 Between gap after, extruding rubber reaction plate 32 produce active force；Meanwhile, the switching signal of brake switch 18 is adopted through signal Collection processes circuit and sends CPU to, and middle processing unit sends control signal through control signal output circuit control circuit And drive circuit is applied on the motor in electric machine actuating mechanism B, motor rotarily drives leading screw screw rod 20 and moves forward, leading screw screw rod 20 Extruding rubber reaction plate 32 produces active force；Under the effect of above-mentioned two extruding, hydraulic control unit D is driven to produce to wheel cylinder Raw a certain amount of brake pressure, eliminates the gap between caliper and friction plate；Now driver can release braking, it is possible to continues Implement braking.If driver discharge brake pedal 19 release braking, now output push rod 33, stroke return spring back seat 34, Rubber reaction plate 32, stroke adjustment push rod 30, stroke adjustment spring 26, stroke adjustment spring base 25, leading screw screw rod 20, plunger top Bar 24 and input push rod 16 grade quickly recover to thoroughly release the original state of braking action under the effect of various return counter-forces； If driver continues to trample brake pedal 19 and implements braking, electronic control unit E can persistently detect acquisition brake pedal position The control signal of sensor 17, master cylinder pressure sensor 44, rotor displacement sensor 12 etc., CPU passes through itself Control algolithm, processes above-mentioned status signal and obtains the braking intention of driver, be slow light brake, slow moderate braking or Other situations, according to the braking intention of driver, calculate name brake pressure, then the master obtained with master cylinder pressure sensor 44 The braking-force ratio that cylinder calculation of pressure obtains relatively, determines that brake force is not enough or brake force is excessive, according in CPU Control algolithm obtain the difference of name brake pressure and actual brake pressure, and trample the speed of brake pedal 19 according to driver The rotor-position that degree, displacement and dynamics and current rotor displacement transducer 12 obtain obtains needing to be applied to electric machine actuating mechanism B Driving electric current, current signal exported to motor drive controller F by electronic control unit E, drives motor to make accordingly Rotating forward or reversion action, drive feed screw nut 13 advance or retreat rapidly and accurately, increase or reduce and be applied to rubber Pressure on reaction plate 32, so export the most controlled brake fluid pressure make car deceleration or parking.
Conventional brake mode of operation:
During conventional brake, system does not triggers the active control functions such as ABS, TCS or ESP, and each in system controls Electromagnetic valve is in power-off default conditions, driver's brake pedal 16, electronic control unit E quickly detect brake switch 18, The signal of brake pedal position sensor 17, thus predict that operator brake is intended to.Electronic control unit E controls to drive controller F drives driven by motor leading screw screw rod 20 quick and precisely to follow driver and tramples the speed of brake pedal, displacement, motor and driver Jointly master cylinder 2 is applied active force, make master cylinder the first plunger 52, master cylinder the second plunger 55 advance or retreat, master cylinder 2 Middle a chamber, b chamber export respectively or the brake fluid that flows back to is through respective brake piping, the pressure regulation into or out system of normally open solenoid valve Driving wheel cylinder, it is achieved the conventional brake of wheel cylinder increases decompression, makes car deceleration or parking.
The operating modes such as ABS, TCS or ESP:
Running car is frequently encountered various complex working condition, such as: on the low attachment road surfaces such as wet and slippery or ice and snow, at a high speed Traveling is implemented suddenly relatively force dynamic, starting to accelerate or under the operating mode such as tempo turn, automobile be likely occurred wheel lock up drag sliding, Driving wheel trackslips or the dangerous situation such as run-off-road traveling, and at this moment system will trigger rapidly ABS, TCS or ESP active safety control Function.After ABS, TCS or ESP function is triggered, electronic control unit E is by timely collection automobile longitudinal and lateral acceleration The running status that the signals such as degree, yaw velocity, side slip angle, wheel speed are current to identify automobile, exports various controls in real time Signal regulates normally opened electricity to the pressure of electric machine actuating mechanism B, compensation electromagnetic valve 51, low pressure accumulator electromagnetic valve, each wheel cylinder Magnet valves etc. complete the supercharging of wheel cylinder, pressurize and decompression regulation.
Control pressure regulation control algolithm in this device all realizes the quick of each road pressure of wheel cylinder and effectively controls base This control rule is: the decompression regulation of (1) default has limit priority, i.e. draws a certain when electronic control unit E judgement When having one or more wheel cylinder to reduce pressure in the control cycle, first meet their decompression demand；(2) all wheel cylinders all without During decompression demand, make each wheel cylinder pressurize or supercharging according to automobile real-time running state；(3) a certain road or multichannel wheel cylinder During decompression, electronic control unit E output multi-channel control signal simultaneously controls motor and inverts rapidly drive leading screw screw retreats, need to subtract Electric-opening in the pressure regulation normally open solenoid valve power-off unlatching of pressure wheel cylinder and low pressure accumulator normally closed solenoid valve, need to reduce pressure system Driving wheel cylinder inside brake liquid is introduced into through brake piping, corresponding pressure regulation normally open solenoid valve, low pressure accumulator normally closed solenoid valve In low pressure accumulator, then flow in master cylinder, be rapidly completed the decompression cycles of corresponding wheel cylinder, between wheel cylinder Different vacuum Flow-rate adjustment realizes by controlling electromagnetic valve average opening time length, and other is without the wheel cylinder of decompression demand Implementing pressurize in the process, in decompression process, owing to motor reversal drives leading screw screw retreats, driver now may feel that The sensation of " the top foot " that be similar in conventional braking system ABS work process, the leading screw inside screw of this programme has stroke and adjusts Joint mechanism, stroke control mechanism mainly includes stroke adjustment push rod, stroke adjustment spring and stroke adjustment spring pedestal, leading screw spiral shell Bar regulates spring by stroke adjustment push rod crush stroke, and driver now may feel that and is similar to conventional braking system ABS work The pedal force sense of low-frequency vibration during work, the stroke vibration amplitude of input push rod is substantially zeroed, and pedal sense is more preferable.

Claims (9)

1. an integrated electric control master cylinder drive system, includes brake pedal operation mechanism (A), brake master cylinder assy (C), hydraulic control unit (D), electronic control unit (E) and motor drive controller (F)；It is characterized in that, described is integrated Electric control master cylinder drive system also includes electric machine actuating mechanism (B), and described electric machine actuating mechanism (B) includes silk Thick stick screw mechanism, stroke return mechanism, input sealing mechanism, shell mechanism, leading screw screw drive, clutch shaft bearing (5), the Two bearings (9) and rotor-position sensor (12)；
Described shell mechanism includes drive end bearing bracket (3), casing (7), middle end cap (10) and rear end cap (11)；
The right-hand member circular disk of drive end bearing bracket (3) is with bolts with the left flange plate of casing (7), the right ring flange of casing (7) With bolts with middle end cap (10), the left end ring flange of rear end cap (11) is with bolts with middle end cap (10)；
Stroke return mechanism is arranged in drive end bearing bracket (3), and leading screw screw mechanism uses clutch shaft bearing (5) to pacify with the second bearing (9) It is contained on drive end bearing bracket (3) and middle end cap (10), and is in the stroke return spring among rear end cap (11), in stroke return mechanism The right side of back seat (34) contacts connection, leading screw screw drive machine with the left side of the leading screw screw rod (20) in leading screw screw mechanism For bonded on 3rd section of axle of the feed screw nut (13) that structure is sleeved in leading screw screw mechanism, rotor-position sensor (12) overlaps Being contained on the first paragraph axle of feed screw nut (13), and be in the right cylinder of rear end cap (11), input sealing mechanism is arranged on silk In first ladder blind hole of thick stick screw rod (20).
2. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described leading screw spiral shell Linkage also includes plunger push rod (24), stroke adjustment spring base (25), stroke adjustment spring (26), ball body (27), OK Journey regulation push rod (30), adjusting base (31), rubber reaction plate (32) and output push rod (33)；
It is upper for rolling connection, stroke adjustment spring base that feed screw nut (13) is sleeved on leading screw screw rod (20) by ball body (27) (25) right-hand member of leading screw screw rod (20) first ladder blind hole, stroke adjustment spring base (25) and the first of leading screw screw rod (20) are loaded Being matched in clearance between ladder blind hole, the groove that plunger push rod (24) loads stroke adjustment spring base (25) is interior for being slidably matched, The right-hand member of plunger push rod (24) is connected with the left end ball pivot of the input push rod (16) in brake pedal operation mechanism (A), and stroke is adjusted The right-hand member of joint spring (26) is connected with the recessed circle of left end annular stop of stroke adjustment spring base (25)；Stroke adjustment spring (26) Left end embed in the annular stop groove on the stroke adjustment push rod (30) that is arranged in the second ladder blind hole, stroke adjustment top The left end of left section of axle of bar (30) embeds in the intercommunicating pore of leading screw screw rod (20), and extend into the 3rd ladder of leading screw screw rod (20) In blind hole；Adjusting base (31) is enclosed in the 3rd ladder blind hole of leading screw screw rod (20), left section of stroke adjustment push rod (30) The left end of axle inserts the interstitial hole of adjusting base (31) and contacts with the right side of round rubber reaction plate (32), and rubber feeds back Dish (32) connects for contact in loading the groove on the right-hand member disk of output push rod (33)；The right-hand member disk dress of output push rod (33) Enter in the 3rd ladder blind hole of leading screw screw rod (20).
3. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described leading screw spiral shell Female (13) are the cylindrical element of a hollow, and the left end of feed screw nut (13) centre bore is provided with the interior spiral shell matched with ball body (27) Stricture of vagina formula raceway, feed screw nut (13) excircle is arranged to the multidiameter that diameter is different, is followed successively by installation rotor-position from right to left The first paragraph axle of sensor (12), installs the second segment axle of the second bearing (9), installs the 3rd section of axle of rotor yoke (28) With the 4th section of axle of installation clutch shaft bearing (5), a diameter of maximum of the 3rd section of axle, the 4th section of axle and the diameter phase of second segment axle With, a diameter of minimum of first paragraph axle.
4. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described leading screw spiral shell Bar (20) is a cylindrical element, and axially disposed on the external cylindrical surface of the right-hand member of leading screw screw rod (20) to have right-hand member be unlimited groove, The external thread type raceway matched with ball body (27) it is provided with, on leading screw screw rod (20) on external cylindrical surface on the left of open channel External thread type raceway is identical with the I.S.S roller path structure on feed screw nut (13), and the right-hand member of leading screw screw rod (20) sets vertically Being equipped with ladder blind hole, left end is axially disposed for left blind hole that is the 3rd ladder blind hole, and the ladder blind hole of right-hand member is blind with a left side for left end Axially disposed between hole have the intercommunicating pore both connected, the ladder blind hole of right-hand member, intercommunicating pore, the left blind hole of left end and leading screw The axis of rotation conllinear of screw rod (20), it is blind with the second ladder that the ladder blind hole of right-hand member is followed successively by the first ladder blind hole from right to left Hole.
5. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described leading screw spiral shell Bar drive mechanism includes motor stator winding (6), rotor (8), rotor yoke (28) and motor rotor magnetic steel (29)；
Described rotor yoke (28) is sleeved on the 3rd section of axle of feed screw nut (13) and uses bonded, rotor It is stationary fit that magnet steel (29) is sleeved on the outer ring of rotor yoke (28), and the outer ring of motor rotor magnetic steel (29) turns with motor Being matched in clearance between the inner ring of son (8), the outer ring of rotor (8) is matched in clearance with the inner ring of casing (7), rotor (8) being surrounded with motor stator winding (6), motor stator winding (6) is that stationary fit is connected with the inner ring of casing (7).
6. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described input is close Sealing mechanism includes dust cover (15), the first return spring (21), the second return spring (22) and rubber packing (23)；
Dust cover (15), the first return spring (21), the second return spring (22) are put the most successively with rubber packing (23) Put in the first ladder blind hole of leading screw screw rod (20), dust cover (15), the first return spring (21), the second return spring (22) Connection, dust cover (15), the first return spring (21), the second return spring (22) and rubber is contacted successively with rubber packing (23) Liner (23) is sleeved on the input push rod (16) in brake pedal operation mechanism (A), the left side of rubber packing (23) and post The right side contact of plug push rod (24) connects.
7. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described stroke returns Position mechanism is made up of with stroke return spring front stall (35) stroke return spring (4), stroke return spring back seat (34)；
Described stroke return spring back seat (34) is disc-shaped structure part, by the circle ring disk group of the torus of left end Yu right-hand member Becoming, toric right-hand member is connected with the left side of circle ring disk, and the right side of circle ring disk is annular plane, toric time The axis of rotation conllinear of the central through hole on shaft axis and circle ring disk, toric internal orifice dimension and the central through hole on circle ring disk Aperture is equal, and the output in the aperture of the central through hole on toric internal orifice dimension or circle ring disk and leading screw screw mechanism pushes away The left end rod diameter of bar (33) is equal, and it is convex that toric surrounding is i.e. inwardly provided with two circle torus from the edge of circle ring disk Rise, between two circle torus projections, be arranged to place the spring retainer groove of stroke return spring (4)；
One end of stroke return spring (4) is placed in the spring retainer groove of stroke return spring back seat (34), stroke return The other end of spring (4) is placed in the spring retainer groove of stroke return spring front stall (35), stroke return spring front stall (35) Being connected by screw and drive end bearing bracket (3) are fixing, the central through hole on stroke return spring back seat (34) is joined with output push rod (33) Dress is for being slidably matched.
8. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described hydraulic pressure control Unit processed (D) is made up of compensation controlling organization and pressure of wheel braking cylinder governor motion；
Described compensation controlling organization is to include energy storage pressure sensor (36), relief valve (37), accumulator (38), check valve (39), hydraulic pump (40), pump motor (41) and compensation electromagnetic valve (51)；
Described hydraulic pump (40) and pump motor (41) are mechanically connected, the oil-in of hydraulic pump (40) respectively with relief valve (37) Oil-out is connected with the oil-in pipeline of the oil storage cup (1) in brake master cylinder assy (C), and the oil-out of hydraulic pump (40) is with unidirectional The oil-in pipeline of valve (39) connects, and the oil-out of check valve (39) hydraulic fluid port, energy storage pressure with accumulator (38) respectively passes The hydraulic fluid port of sensor (36), the oil-in of compensation electromagnetic valve (51) are connected with the oil-in pipeline of relief valve (37), compensation electromagnetic valve (51) oil-out and a chamber of master cylinder (2) are connected with the oil-out pipeline in b chamber；
Described pressure of wheel braking cylinder governor motion is by the first low pressure accumulator (47), the first low pressure accumulator normally closed solenoid valve (49), the second low pressure accumulator (43), the second low pressure accumulator normally closed solenoid valve (42), the first pressure regulation normally open solenoid valve (45), the second pressure regulation normally open solenoid valve (46), the 3rd pressure regulation normally open solenoid valve (48), the 4th pressure regulate normally opened electricity Magnet valve (50) and master cylinder pressure sensor (44) are constituted；
The oil-out in a chamber of master cylinder (2) and the oil-in of the first low pressure accumulator normally closed solenoid valve (49), the first pressure are adjusted The oil-in of joint normally open solenoid valve (45), the oil-in of the second pressure regulation normally open solenoid valve (46) and master cylinder pressure sensor (44) oil-in pipeline connects, the oil-out in the b chamber of master cylinder (2) and the second low pressure accumulator normally closed solenoid valve (42) Oil-in, the oil-in of the 3rd pressure regulation normally open solenoid valve (48) and the oil-in of the 4th pressure regulation normally open solenoid valve (50) Pipeline connects, and the first low pressure accumulator normally closed solenoid valve (49), the second low pressure accumulator normally closed solenoid valve (42) oil-out are respectively Connect with the hydraulic fluid port pipeline of the first low pressure accumulator (47), the second low pressure accumulator (43), the first pressure regulation normally open solenoid valve (45), the second pressure regulation normally open solenoid valve (46), the 3rd pressure regulation normally open solenoid valve (48) regulate normally opened with the 4th pressure The oil-out of electromagnetic valve (50) respectively with front left wheel, front right wheel, the wheel cylinder oil-in of rear left wheel and rear right wheel Pipeline connects.
9. according to the integrated electric control master cylinder drive system described in claim 1, it is characterised in that described braking is stepped on Perform in the input sealing mechanism of the input push rod (16) insertion electric machine actuating mechanism (B) in plate operating mechanism (A) and with motor The right-hand member of the plunger push rod (24) in the leading screw screw mechanism of mechanism (B) uses ball pivot to connect, the system in brake master cylinder assy (C) The dynamic input of master cylinder (2) utilizes studs to be fixedly linked with the output push rod (33) of electric machine actuating mechanism (B), master cylinder (2) axis of rotation and output push rod (33) and the axis of rotation conllinear inputting push rod (16), a chamber of master cylinder (2) is fuel-displaced Mouthful and hydraulic control unit (D) in the oil-out of compensation electromagnetic valve (51), the first low pressure accumulator normally closed solenoid valve (49) Oil-in is connected with the oil-in pipeline of master cylinder pressure sensor (44), the oil-out in master cylinder (2) b chamber and hydraulic control list The oil-out of compensation electromagnetic valve (51), the oil-in of master cylinder pressure sensor (44) and the second low pressure accumulator in unit (D) are normal The oil-in pipeline closing electromagnetic valve (42) connects；
Input signal acquisition process circuit in electronic control unit (E) respectively with the master cylinder pressure in hydraulic control unit (D) Brake pedal displacement transducer in sensor (44), energy storage pressure sensor (36), brake pedal operation mechanism (A) (17), the brake switch (18) in brake pedal operation mechanism (A), current sensor, rotor-position sensor (12) and power supply Modular circuit electric wire connects；Control signal output circuit in electronic control unit (E) respectively with in hydraulic control unit (D) Pump motor (41), the first pressure regulation normally open solenoid valve (45), the second pressure regulation normally open solenoid valve (46), the 3rd pressure regulation Normally open solenoid valve (48), the 4th pressure regulation normally open solenoid valve (50), compensation electromagnetic valve (51), the second normally closed electricity of low pressure accumulator The control circuit electricity of magnet valve (42), the first low pressure accumulator normally closed solenoid valve (49), power module and motor drive controller Line connects；Fault diagnosis circuit in electronic control unit (E) is connected with power module circuitry；
The signals collecting end of the current sensor in motor drive controller (F) and the actuating motor in electric machine actuating mechanism (B) Signal output part circuit lines connect, the control electricity in the signal output part of current sensor and motor drive controller (F) The first input end circuit lines on road connects, the second input of control circuit and the control signal in electronic control unit (E) The circuit of output terminal electric wire of output circuit connects, and the outfan of control circuit is connected with the inlet circuit electric wire of drive circuit, The outfan of drive circuit is connected with the signal input part circuit lines of the actuating motor in electric machine actuating mechanism (B).
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