CN204250014U

CN204250014U - Integrate motor electric control braking master cylinder drive system

Info

Publication number: CN204250014U
Application number: CN201420739716.9U
Authority: CN
Inventors: 李静; 杨雄; 张伟同
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2014-11-28
Filing date: 2014-11-28
Publication date: 2015-04-08
Anticipated expiration: 2024-11-28

Abstract

The utility model discloses integrate motor electric control braking master cylinder drive system, be intended to overcome the problem that in existing hydraulic brake system, power-assisted volume is comparatively large, active safety function difference is poor with pedal sense during braking, 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 front end cover, leading screw screw mechanism adopts bearing to be arranged on front end cover and middle-end covers, and be in rear side housing, the right side of stroke pull back 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

Integrate motor electric control braking master cylinder drive system

Technical field

The utility model relates to a kind of integrate motor electric control braking master cylinder drive system in vehicle chassis technology field.

Background technology

From automobile is born, motor vehicle braking system just plays vital role at the secure context of vehicle.Modern automobile generally adopts hydraulic brake system, its composition comprises brake pedal, master brake cylinder, vacuum booster, hydraulic tubing, drg etc., during braking, chaufeur is stepped on brake pedal and is promoted master brake cylinder motion, the mechanical braking force that pedal inputs by master brake cylinder can convert hydraulic energy to, high-pressure brake liquid arrives brake wheel cylinder through hydraulic tubing, realizes braking.But above-mentioned hydraulic brake system exists certain not enough: chaufeur burden is larger; After the active safety control functions such as integrated vacuum power-assisted and modern ABS, TCS and ESP, hydraulic brake system is more complicated, and hydraulic brake system speed of response is slow.

Chinese patent bulletin (opening) number is CN10132778A, bulletin (opening) day is 2008.12.24, application number is 200710111537.5, denomination of invention is " a kind of electric booster braking system ", structurally this system additionally increases a kind of power-transfer clutch, causes hydraulic brake system overall volume comparatively large, and does not have the active safety functions such as ABS, TCS and ESP of extensive integrated use on current automobile, once motor braking lost efficacy, the safety of braking can not be guaranteed.

Chinese patent bulletin (opening) number is 103496362A, bulletin (opening) day is 2014.01.08, application number is 201310504320.6, denomination of invention is " a kind of compensation integrate motor electric controlled brake system ", although can meet the demand, when motor reversal drives leading screw screw retreats, input push rod follows leading screw screw retreats, make chaufeur produce top feel to feel, pedal sense is poor.Therefore, ensureing that brake system of car has good deceleration and stopping performance and can while the active safety function such as integrated ABS, TCS and ESP, design a structure simpler, degree of integration is higher, and the better integrate motor of pedal sense automatically controlled dynamic master cylinder actuating device when can ensure braking, become the key technical problem needing emphasis to solve.

Summary of the invention

Technical problem to be solved in the utility model overcomes the problem that in the hydraulic brake system of prior art existence, power-assisted volume is comparatively large, active safety function difference is poor with pedal sense during braking, provides a kind of integrate motor electric control braking master cylinder drive system.

For solving the problems of the technologies described above, the utility model adopts following technical scheme to realize: described integrate motor electric control braking master cylinder drive system includes brake pedal operation mechanism, electric machine actuating mechanism, brake master cylinder assembly, hydraulic control 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 sensor.

Described shell mechanism includes front end cover, casing, middle end cap and rear side housing.

The right-hand member circular disk of front end cover and the left flange plate of casing with bolts, right flange and the middle end cap of casing are with bolts, and left end flange and the middle end cap of rear side housing are with bolts.

Stroke return mechanism is arranged in front end cover, leading screw screw mechanism adopts clutch shaft bearing and the second bearing is arranged on front end cover and middle-end covers, and be among rear side housing, the right side of stroke pull back spring back seat in stroke return mechanism contacts with the left side of the leading screw screw rod in leading screw screw mechanism and connects, the 3rd section of axle that leading screw screw drive is sleeved on the feed screw nut in leading screw screw mechanism is key connects, rotor-position sensor is sleeved on the first paragraph axle of feed screw nut, and be in the right cylinder of rear side housing, 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 perch, stroke adjustment spring, ball body, stroke adjustment push rod, adjusting base, rubber reaction plate and exports push rod.Feed screw nut is sleeved on leading screw screw rod by ball body and connects for rolling, stroke adjustment spring perch loads the right-hand member of leading screw screw rod first ladder blind hole, be free-running fit between stroke adjustment spring perch and the first ladder blind hole of leading screw screw rod, be bearing fit in the groove of plunger push rod loading stroke adjustment spring perch, 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, and the right-hand member of stroke adjustment spring is connected with the recessed circle of left end annular stop of stroke adjustment spring perch; The left end of stroke adjustment spring embeds in the annular stop groove on the stroke adjustment push rod that is arranged in the second ladder blind hole, and the left end of left section of axle of stroke adjustment push rod 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 the 3rd ladder blind hole of leading screw screw rod, the left end of left section of axle of stroke adjustment push rod inserts the interstitial hole of adjusting base and contacts with the right side of round rubber reaction plate, and rubber reaction plate loads in the groove on the right-hand member disk exporting push rod for contact connects; The right-hand member disk exporting 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 hole is provided with the I.S.S raceway matched with ball body, feed screw nut excircle is arranged to the different stepped shaft of diameter, be followed successively by the first paragraph axle installing rotor-position sensor from right to left, the second segment axle of No. 2 bearings, the 3rd section of axle of mounting rotor of electric motor yoke and the 4th section of axle installing No. 1 bearing are installed, the diameter of the 3rd section of axle is maximum, 4th section of axle is identical with the diameter of second segment axle, and the diameter of first paragraph axle is minimum.

Leading screw screw rod described in technical scheme is a cylindrical element, the external cylindrical surface of the right-hand member of leading screw screw rod being provided with vertically right-hand member is unlimited groove, external cylindrical surface on the left of open channel is provided with the external thread type raceway matched with ball body, 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 is provided with ladder blind hole vertically, left end is set to left blind hole i.e. the 3rd ladder blind hole vertically, the intercommunicating pore both be communicated with is provided with vertically between the ladder blind hole of right-hand member and the left blind hole of left end, the ladder blind hole of right-hand member, intercommunicating pore, the left blind hole of left end and the rotation axis 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 blind hole from right to left.

Leading screw screw drive described in technical scheme includes motor stator winding, rotor, rotor yoke and motor rotor magnetic steel.The 3rd section of axle that described rotor yoke is sleeved on feed screw nut adopt key to connect, it the outer ring that motor rotor magnetic steel is sleeved on rotor yoke is close fit, it is free-running fit between the outer ring of motor rotor magnetic steel and the inner ring of rotor, the outer ring of rotor and the inner ring of casing are free-running fit, rotor is around there being motor stator winding, and motor stator winding and the inner ring of casing are that close fit is connected.

Input sealing mechanism described in technical scheme includes dust boot, the first pull back spring, the second pull back spring and rubber gasket.Dust boot, the first pull back spring, the second pull back spring and rubber gasket are placed in the first ladder blind hole of leading screw screw rod from right to left successively, dust boot, the first pull back spring, the second pull back spring contact connection successively with rubber gasket, dust boot, the first pull back spring, the second pull back spring and rubber gasket are sleeved on the input push rod in brake pedal operation mechanism, and the left side of rubber gasket contacts with the right side of stroke adjustment spring perch and connects.

Stroke return mechanism described in technical scheme is made up of stroke pull back spring, stroke pull back spring back seat and stroke pull back spring front stall.Described stroke pull back spring back seat is disc-shaped structure part, be made up of the torus of left end and the circle ring disk of right-hand member, toric right-hand member is connected with the left side of circle ring disk, the right side of circle ring disk is annular plane, the rotation axis conllinear of the central through hole on toric rotation axis and circle ring disk, toric internal orifice dimension is equal with the aperture of the central through hole on circle ring disk, the left end rod diameter of the output push rod in the aperture of the central through hole on toric internal orifice dimension or circle ring disk and leading screw screw mechanism is equal, namely two circle torus are inwardly provided with from the edge of circle ring disk protruding around toric, the spring retainer groove placing stroke pull back spring is arranged between two circle torus projections.One end of stroke pull back spring is placed in the spring retainer groove of stroke pull back spring back seat, the other end of stroke pull back spring is placed in the spring retainer groove of stroke pull back spring front stall, stroke pull back spring front stall is fixedly connected with front end cover by screw, and the central through hole on stroke pull back spring back seat is equipped with as bearing fit with output push rod.

Hydraulic control unit described in technical scheme is made up of compensatory control mechanism and pressure of wheel braking cylinder regulating mechanism.Described compensatory control mechanism comprises energy storage pressure sensor, safety valve, energy storage, check valve, Hydraulic Pump, pump motor and compensation electromagnetic valve.Described Hydraulic Pump and pump motor are mechanically connected, the oil inlet of Hydraulic Pump is connected with the oil inlet pipeline of the oil storage cup in brake master cylinder assembly with the oil outlet of safety valve successively, the oil outlet of Hydraulic Pump is connected with the oil inlet pipeline of check valve, the oil outlet of check valve is connected with the oil inlet pipeline of safety valve with the hydraulic fluid port of energy storage, the hydraulic fluid port of energy storage pressure sensor, the oil inlet of compensation electromagnetic valve successively, and the oil outlet of compensation electromagnetic valve is connected with the oil outlet pipeline in b chamber with a chamber of master brake cylinder; Described pressure of wheel braking cylinder regulating mechanism regulates normally open solenoid valve, the second pressure adjustment normally open solenoid valve, the 3rd pressure to regulate normally open solenoid valve, the 4th pressure adjustment normally open solenoid valve and master cylinder pressure sensor to form by the first low pressure accumulator, the first low pressure accumulator normally closed solenoid valve, the second low pressure accumulator, the second low pressure accumulator normally closed solenoid valve, the first pressure.The oil outlet in a chamber of master brake cylinder (2) and the oil inlet of the first low pressure accumulator normally closed solenoid valve, first pressure regulates the oil inlet of normally open solenoid valve, second pressure regulates the oil inlet of normally open solenoid valve to be connected with the oil inlet pipeline of master cylinder pressure sensor, the oil outlet in the b chamber of master brake cylinder and the oil inlet of the second low pressure accumulator normally closed solenoid valve, 3rd pressure regulates the oil inlet of normally open solenoid valve to regulate the oil inlet pipeline of normally open solenoid valve to be connected with the 4th pressure, first low pressure accumulator normally closed solenoid valve, second low pressure accumulator normally closed solenoid valve oil outlet successively with the first low pressure accumulator, the hydraulic fluid port pipeline of the second low pressure accumulator connects, first pressure regulates normally open solenoid valve, second pressure regulates normally open solenoid valve, 3rd pressure regulate normally open solenoid valve and the 4th pressure regulate the oil outlet of normally open solenoid valve successively with front left wheel, front right wheel, rear left wheel is connected with the brake wheel cylinder oil inlet pipeline of rear right wheel.

Input push rod in brake pedal operation mechanism described in technical scheme to insert in the input sealing mechanism of electric machine actuating mechanism and adopts ball pivot to be connected with the right-hand member of the plunger push rod in the leading screw screw mechanism of electric machine actuating mechanism, the input end of the master brake cylinder in brake master cylinder assembly and the output push rod of electric machine actuating mechanism utilize double end stud to be fixedly linked, the rotation axis conllinear of the rotation axis of master brake cylinder and output push rod and input push rod, the oil outlet of the compensation electromagnetic valve in a chamber oil outlet of master brake cylinder and hydraulic control unit, the oil inlet of the first low pressure accumulator normally closed solenoid valve is connected with the oil inlet pipeline of master cylinder pressure sensor, the oil outlet of the compensation electromagnetic valve in the oil outlet in master brake cylinder b chamber and hydraulic control unit, the oil inlet of master cylinder pressure sensor is connected with the oil inlet pipeline of the second low pressure accumulator normally closed solenoid valve, incoming signal acquisition process circuit in electronic control unit is connected with power module circuitry electric wire with the brake pedal displacement pickup in the master cylinder pressure sensor in hydraulic control unit, energy storage pressure sensor, brake pedal operation mechanism, the brake switch in brake pedal operation mechanism, current sensor, rotor-position sensor respectively, control signal output circuit in electronic control unit regulates normally open solenoid valve with the pump motor in hydraulic control unit, the first pressure respectively, the second pressure regulates normally open solenoid valve, the 3rd pressure regulates normally open solenoid valve, the 4th pressure regulates the control circuit electric wire of normally open solenoid valve, compensation electromagnetic valve, the second low pressure accumulator normally closed solenoid valve, the first low pressure accumulator normally closed solenoid valve, power module and motor drive controller to be connected, fault diagnosis circuit in electronic control unit is connected with power module circuitry, the acquisition of signal end of the current sensor in motor drive controller is connected with the signal output part circuit lines of the actuating motor in electric machine actuating mechanism, the signal output part of current sensor is connected with the first input end circuit lines of the control circuit in motor drive controller, second input end of control circuit is connected with the circuit of output terminal electric wire of the control signal output circuit in electronic control unit, the mouth of control circuit is connected with the inlet circuit electric wire of driving circuit, the mouth of driving circuit is connected with the signal input part circuit lines of the actuating motor in electric machine actuating mechanism.

Compared with prior art the beneficial effects of the utility model are:

1. the leading screw inside screw of integrate motor electric control braking master cylinder drive system described in the utility model adopts stroke control mechanism, and when motor reversal drives leading screw screw retreats, pedal sense is better;

2. the motor angular transposition of integrate motor electric control braking master cylinder drive system described in the utility model is easy to realize accurately following chaufeur brake pedal angular displacement signal, thus realizes different braking functions;

3. integrate motor electric control braking master cylinder drive system highly versatile described in the utility model, is applicable to various vehicle.

4. integrate motor electric control braking master cylinder drive system described in the utility model is when fail-safe mode, and chaufeur independently can implement braking, guarantees automotive safety reliability service.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is integrate motor electric control braking master cylinder driving system structure described in the utility model composition schematic block diagram.

Fig. 2 is the front view of the electric machine actuating mechanism structure composition in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 3 is the schematic diagram of the hydraulic control unit structure composition in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 4 is the structure composition partial enlarged drawing of the input sealing mechanism in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 5-a is the full sectional view on the structure composition front view of plunger push rod in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 5-b is the front view of the plunger push rod structure composition in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 6-a is the full sectional view on the structure composition front view of rubber gasket in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 6-b is the front view of the rubber gasket structure composition in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 7-a is the full sectional view on the structure composition front view of spring first skeleton in integrate motor electric control braking master cylinder drive system described in the utility model.

Fig. 7-b is the front view of the spring first skeleton structure composition in integrate motor electric control braking master cylinder drive system described in the utility model.

In figure: 1. oil storage cup, 2. master brake cylinder, 3. front end cover, 4. stroke pull back spring, No. 5.1 bearings, 6. motor stator winding, 7. casing, 8. rotor, No. 9.2 bearings, 10. end cap in, 11. rear side housings, 12. rotor-position sensors, 13. feed screw nuts, 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 pull back springs, 22. second pull back springs, 23. rubber gaskets, 24. plunger push rods, 25. stroke adjustment spring perches, 26. stroke adjustment springs, 27. ball bodies, 28. rotor yokes, 29. motor rotor magnetic steels, 30. stroke adjustment push rods, 31. adjusting bases, 32. rubber reaction plates, 33. export push rod, 34. stroke pull back spring back seats, 35. stroke pull back spring front stalls, 36. energy storage pressure sensors, 37. safety valves, 38. energy storages, 39. check valves, 40. Hydraulic Pumps, 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 regulate normally open solenoid valve, 46. second pressure regulate normally open solenoid valve, 47. first low pressure accumulators, 48. the 3rd pressure regulate normally open solenoid valve, 49. first low pressure accumulator normally closed solenoid valves, 50. the 4th pressure regulate normally open solenoid valve, 51. compensation electromagnetic valves.A. brake pedal operation mechanism, B. electric machine actuating mechanism, C. brake master cylinder assembly, 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 first plungers, 53. first plunger return springs, 54. first plunger return spring skeletons, 55. master cylinder second plungers, 56. second plunger return springs, 57. second pull back spring skeletons, 58. master cylinder housings, 59. spring first skeletons, 60. spring second skeletons, 61. pads.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is explained in detail:

Consult Fig. 1, integrate motor electric control braking master cylinder drive system described in the utility model includes brake pedal operation mechanism A, electric machine actuating mechanism B, brake master cylinder assembly C, hydraulic control unit D, electronic control unit E and motor drive controller F.

Described brake pedal operation mechanism A forms primarily of input push rod 16, brake pedal position sensor 17, brake switch 18 and brake pedal 19.

The upper end of brake pedal 19 has the right-hand member of one section of groove and input push rod 16 with bolts, brake pedal position transduser 17 is connected with brake pedal 19 top rotating shaft screw bolt, and the rotating element of brake pedal position transduser 17 is rotated with brake pedal rotating shaft; Brake switch 18 contacts with the upper position, upper end of brake pedal 19 and connects, and exports the left end of push rod 16 and is connected with plunger push rod 24 ball pivot in described electric machine actuating mechanism B.

Consult Fig. 2, described electric machine actuating mechanism B forms primarily of leading screw screw mechanism, stroke return mechanism, input sealing mechanism, shell mechanism, leading screw screw drive, clutch shaft bearing 5, second bearing 9, rotor-position sensor 12.

Described leading screw screw mechanism is primarily of feed screw nut 13, leading screw screw rod 20, plunger push rod 24, stroke adjustment spring perch 25, stroke adjustment spring 26, ball body 27, stroke adjustment push rod 30, adjusting base 31, rubber reaction plate 32 and export push rod 33.

Described feed screw nut 13 is the cylindrical element of a hollow, the left end of feed screw nut 13 centre hole is provided with the I.S.S raceway matched with ball body 27, feed screw nut 13 excircle is arranged to the different stepped shaft of diameter, be followed successively by the first paragraph axle installing rotor-position sensor 12 from right to left, the second segment axle of No. 2 bearings 9 is installed, 3rd section of axle and the 4th section of axle installing No. 1 bearing 5 of mounting rotor of electric motor yoke 28, the wherein largest diameter of the 3rd section of axle, 4th section of axle is identical with the diameter of second segment axle, diameter is only second to the 3rd section of axle, the diameter of first paragraph axle is minimum.

Described leading screw screw rod 20 is a cylindrical element, the external cylindrical surface of the right-hand member of leading screw screw rod 20 being provided with vertically right-hand member is unlimited groove, the face of cylinder of leading screw screw rod 20 open channel is provided with the external thread type raceway matched with ball body 27, 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, the right-hand member of leading screw screw rod 20 is set to the ladder blind hole of different-diameter vertically, left end is set to left blind hole (the 3rd ladder blind hole) vertically, be provided with intercommunicating pore between the ladder blind hole of right-hand member and the left blind hole of left end both are communicated with, the ladder blind hole of right-hand member, intercommunicating pore, the left blind hole of left end and the rotation axis conllinear of leading screw screw rod 20, the ladder blind hole of right-hand member is followed successively by the first ladder blind hole from right to left, second ladder blind hole.

Described stroke adjustment push rod 30 is stepped shaft like members, stroke adjustment push rod 30 is made up of left section of axle, stage casing axle and right section of axle, left section of axle is small diameter shaft, stage casing axle major diameter axle, right section of axle is middle diameter shaft, the diameter of right section of axle is between left section of axle and the diameter of stage casing axle, and the limited impression installing stroke regulating spring 26 left end is arranged in the junction of right section of axle and stage casing axle.

Described output push rod 33 to be connected with right-hand member disk by left end push rod and to form, the rotation axis conllinear of left end push rod and right-hand member disk, the diameter of right-hand member disk is greater than the diameter of left end push rod, the right side of right-hand member disk is provided with and installs rubber reaction plate 32 and the groove equipped with adjusting base 31 left end.

Described adjusting base 31 is stepped shaft, and left end diameter is identical with output push rod 33 right-hand member groove diameter, and right-hand member diameter is identical with leading screw screw rod 20 the 3rd blind hole diameter, and there is through hole centre; The rotation axis 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, stroke adjustment spring perch 25 loads in the right-hand member of leading screw screw rod 20 first ladder blind hole, for free-running fit is connected between stroke adjustment spring perch 25 and the first ladder blind hole of leading screw screw rod 20, it is bearing fit in the groove that plunger push rod 24 embeds stroke adjustment spring perch 25, the right-hand member of plunger push rod 24 is connected by ball pivot with the left end of the input push rod 16 in brake pedal operation mechanism A, the left end of stroke adjustment spring perch 25 is provided with the recessed circle of annular stop, the right-hand member of stroke adjustment spring 26 is connected with the recessed circle of left end annular stop of stroke adjustment spring perch 25 and embeds in the first ladder blind hole of leading screw screw rod 20, the left end of stroke adjustment spring 26 embeds in the annular stop groove of the stroke adjustment push rod 30 be arranged in the second ladder blind 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 extend in the left blind hole (the 3rd ladder blind hole) of leading screw screw rod 20, adjusting base 31 is annular rubber block, be embedded in the left blind hole (the 3rd ladder blind hole) of leading screw screw rod 20, the left end of the left section of axle that stroke adjustment push rod 30 diameter is less inserts the interstitial hole of adjusting base 31 and contacts with the right side of round rubber reaction plate 32, and rubber reaction plate 32 embeds in the groove on the right-hand member disk exporting push rod 33 as contact connects, the right-hand member disk exporting push rod 33 loads in the left blind hole (the 3rd ladder blind hole) of leading screw screw rod 20, and the left end push rod exporting push rod 33 coordinates with the intermediate neck hole of stroke pull back spring back seat 34 for sliding block joint.

Described stroke return mechanism is made up of stroke pull back spring 4, stroke pull back spring back seat 34, stroke pull back spring front stall 35.

Described stroke pull back spring back seat 34 is disc-shaped structure part, be made up of the torus of left end and the circle ring disk of right-hand member, toric right-hand member is connected with the left side of circle ring disk, the right side of circle ring disk is annular plane, the rotation axis conllinear of the central through hole on toric rotation axis and circle ring disk, toric internal orifice dimension is equal with the aperture of the central through hole on circle ring disk, the aperture of the central through hole on toric internal orifice dimension or circle ring disk is also equal with the left end rod diameter of the output push rod 33 in leading screw screw mechanism, namely two circle torus are inwardly provided with from the edge of circle ring disk protruding around toric, the spring retainer groove placing stroke pull back spring 4 is arranged between two circle torus projections.

One end of stroke pull back spring 4 is placed in stroke pull back spring back seat 34 spring retainer groove, the left end of stroke pull back spring 4 is placed in stroke pull back spring front stall 35 spring retainer groove, stroke pull back spring front stall 35 is connected with front end cover 3 by screw, central through hole on stroke pull back spring back seat 34 is equipped with output push rod 33 phase, the right side of stroke pull back spring back seat 34 connects for contacting with the left side of leading screw screw rod 20, the center of gyration of stroke return mechanism and the center of gyration conllinear of leading screw screw mechanism.

Described input sealing mechanism is made up of dust boot 15, first pull back spring 21, second pull back spring 22, rubber gasket 23, spring first skeleton 59, spring second skeleton 60, pad 61.

Described dust boot 15 is cylindrical gyro-rotor, there is cylindrical bore centre, the external diameter of dust boot 15 is identical with the first blind hole internal diameter size of leading screw screw rod 20, and the internal orifice dimension of dust boot 15 is identical with the external diameter size of input push rod 16, and the internal diameter of dust boot 15 and external diameter center are on same axis.

Consult Fig. 5, described plunger push rod 24 is stepped shaft class formation part, and be from left to right followed successively by first paragraph axle, second segment axle, the 3rd section of axle, the 4th section of axle and platform dish composition, right-hand member is fluted, has relief groove in the middle of the 4th section of axle; The rotation axis conllinear of first paragraph axle, second segment axle, the 3rd section of axle, the 4th section of axle and platform dish.

Consult Fig. 6, described rubber gasket 23 is rubber shell part, is made up of three parts, is from left to right followed successively by first paragraph gyro-rotor, second segment gyro-rotor, the 3rd section of gyro-rotor.Wherein left end is the first gyro-rotor, and centre portion has inclined plane groove, and groove left end diameter is large, and right-hand member diameter is little, has the projection that encloses over effect, have through hole, and be provided with the pad groove installing pad in the middle of gyro-rotor between groove and left end plane; Centre is second segment gyro-rotor, and diameter from left to right reduces gently, and inside is through-hole structure; Right-hand member is the 3rd section of gyro-rotor, and there is a circle groove at low order end edge, and centre is through-hole structure, and this through-hole diameter from left to right increases gently, and rear right reduces a little; The rotation axis conllinear of three gyro-rotors.

Consult Fig. 7, described spring second skeleton 60 is thin-wall part, is made up of three parts, and being from left to right followed successively by disk, thin circular cylinder and flange left end is disk, the circular hole having diameter larger in the middle of disk; Centre is thin circular cylinder, and diameter from left to right reduces gently; Right-hand member is flange; The rotation axis conllinear of disk, thin circular cylinder and flange.

Described spring first skeleton 59 is cylinder thin-wall part, is made up of left end cylinder and right-hand member flange; Left end cylinder has through hole, and right-hand member flange is used for placement first pull back spring 21.

Dust boot 15, spring first skeleton 59, first pull back spring 21, spring second skeleton 60, second pull back spring 22, rubber gasket 23 are placed in the first ladder blind hole of leading screw screw rod 20 from right to left successively, spring second skeleton 60 embeds rubber gasket 23 right-hand member, and pad 61 embeds in the left end groove of rubber gasket 23; Spring first skeleton 59, first pull back spring 21, spring second skeleton 60, second pull back spring 22, pad 61 contact connection successively, input push rod 16 inserts in the central through hole of dust boot 15, spring first skeleton 59, first pull back spring 21, spring second skeleton 60, second pull back spring 22, pad 61, rubber gasket 23, the input left end of push rod 16 adopts ball pivot to be connected with the right-hand member groove of plunger push rod 24, and the left side of rubber gasket 23 contacts with the right side of plunger push rod 24 and connects.

Described shell mechanism is made up of front end cover 3, casing 7, middle end cap 10, rear side housing 11 and stop screw 14.

Described front end cover 3 is the housing structure part of an annulus tubular, is made up of left end barrel, stage casing cylindrical shell and right-hand member circular disk; The center of left end barrel is provided with through hole, the periphery of right-hand member circular disk is provided with bolt hole equably, the right side of right-hand member circular disk is provided with from outside to inside first spacing ring equipped with casing 7 and second spacing ring equipped with No. 1 bearing 5, right-hand member circular disk is connected with the right-hand member of stage casing cylindrical shell, the center of gyration conllinear of the through hole of left end barrel, stage casing cylindrical shell, right-hand member circular disk, left end barrel, the first spacing ring and the second spacing ring.

Described middle end cap 10 is an annular arrangement dish class formation part, 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 the spacing ring body of installation No. 2 bearings 9 second and the first spacing ring body installing casing 7 from the inside to the outside, middle end cap 10 between second spacing ring body and the first spacing ring body is distributed with equably 6 the second bolt holes, the middle end cap 10 around the first spacing ring body is distributed with equably 6 the first bolt holes.

Described rear side housing 11 is two cylinder stepped appearance housing components, and right-hand member is right cylinder, and the right barrel center of right cylinder 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, and the diameter of middle cylinder is greater than the diameter of right cylinder, and middle cylinder and right cylinder connect as one, and middle cylinder through-hole diameter is equal with the barrel diameter of right cylinder; The left end of rear side housing 11 is provided with left end flange, flange is distributed with equably 6 bolt holes; The rotation axis conllinear of middle cylinder, middle cylinder through hole, right cylinder, right cylinder through hole and left end flange.

Casing 7 is annular arrangement housing component, and casing 7 two ends are provided with the left flange plate of the identical annular arrangement be parallel to each other of structure, right flange, left flange plate, right flange center of gyration line and casing 7 center of gyration line conllinear.The left end of casing 7 and the right-hand member circular disk in front end cover 3 the first spacing ring be equipped with and adopt bolt to be fixedly connected with, the right-hand member of casing 7 is equipped with the first spacing ring body of middle end cap 10 and adopts bolt to be fixedly connected with, the right side of the left end flange of rear side housing 11 and the middle end cap 10 between the second spacing ring body with the first spacing ring body adopts bolt to be fixedly connected with, stop screw 14 is connected with the spacing hole of rear side housing 11, and the right cylinder through hole of rear side housing 11 is sleeved on input push rod 16.

The right-hand member circular disk of front end cover 3 and the left flange plate of casing 7 with bolts, right flange and the middle end cap 10 of casing 7 are with bolts, left end flange and the middle end cap 10 of rear side housing 11 are with bolts, the rotation axis conllinear of front end cover 3, casing 7, middle end cap 10 and rear side housing 11.

Stroke return mechanism is arranged in front end cover 3, leading screw screw mechanism employing clutch shaft bearing 5 is arranged on front end cover 3 with the second bearing 9 and is connected for rolling with on middle end cap 10, and be among rear side housing 11, the right side of stroke pull back spring back seat 34 in stroke return mechanism contacts with the left side of the leading screw screw rod 20 in leading screw screw mechanism and connects, the 3rd section of axle that leading screw screw drive is sleeved on the feed screw nut 13 in leading screw screw mechanism is key connects, rotor-position sensor 12 is sleeved on the first paragraph axle of feed screw nut 13, and be in the middle cylinder of rear side housing 11, input sealing mechanism is arranged in the first ladder blind hole on leading screw screw rod 20.

Described leading screw screw drive is made up of motor stator winding 6, rotor 8, rotor yoke 28, motor rotor magnetic steel 29.

The 3rd section of axle that described rotor yoke 28 is sleeved on feed screw nut 13 adopts key to connect to realize power transmission object, it the outer ring that motor rotor magnetic steel 29 is sleeved on rotor yoke 28 is close fit, be free-running fit between the outer ring of motor rotor magnetic steel 29 and the inner ring of rotor 8, the outer ring of rotor 8 is connected with the inner ring free-running fit of casing 7, rotor 8 around there being 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 the right cylinder of rear side housing 11, and the outer ring of rotor-position sensor 12 is connected with the middle cylinder free-running fit of rear side housing 11; The inner ring of clutch shaft bearing 5 is that interference fit is connected with the 4th of feed screw nut 13 the section of axle, and outer collar bearing and the spacing ring body of second on front end cover 3 of clutch shaft bearing 5 are that interference fit is connected; The inner bearing collar of the second bearing 9 is connected with the second segment axle interference fit of leading screw screw rod, and the outer collar bearing of the second bearing 9 is that interference fit is connected with the second spacing ring body on middle end cap 10.

Described master brake cylinder 2 is made up of master cylinder housing 58, master cylinder first plunger 52, master cylinder second piston 55, first plunger return spring 53, second plunger return spring 56, first plunger return spring skeleton 54, second plunger return spring skeleton 57.Wherein master cylinder housing 58 is cylindrical shape symmetrical casting, the center of master cylinder housing 58 is provided with the first blind hole from right to left, second blind hole, 3rd blind hole, wherein the first blind hole is identical with the 3rd blind hole diameter, contact with master cylinder second piston 55 with master cylinder first plunger 52 respectively and connect, second blind hole is between the first blind hole and the 3rd blind hole, diameter is a bit larger tham the first blind hole and the 3rd blind, the top of the housing wall of the left end of the first blind hole of master cylinder housing 58 and the right-hand member of the 3rd blind hole is provided with two oil inlets, the left end of the second blind hole of master cylinder housing 58, the bottom of the housing wall of the left end of the 3rd blind hole is provided with two oil outlets,

Described master cylinder first plunger 52 and master cylinder second piston 55 are cylinder symmetrical casting, and master cylinder first plunger 52 left end is provided with darker groove, and 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; Wherein the first guide rod right-hand member is connected with tapped bore rigid body with center, master cylinder first plunger 52 groove left side screw thread; Master cylinder second piston 55 left end is provided with darker groove, and groove center axis is provided with the second guide rod, guide rod left end has circle to emit, and right-hand member has screw thread; Wherein the second guide rod right-hand member is connected with tapped bore rigid body with center, master cylinder second piston 55 groove left side screw thread; The central axis of the first guide rod and master cylinder first plunger 52 central axis and the second guide rod and master cylinder second piston 55 is on same center of gyration axis;

The first described plunger return spring skeleton 54 and the second plunger return spring skeleton 57 are columnar structured, be made up of the otic placode of cylindrical shell and annular arrangement, the right-hand member center of cylindrical shell is provided with the through hole larger than the smaller diameter rods of the first guide rod and the second guide rod, the otic placode of annular arrangement is connected with cylindrical shell left end, the center of gyration of otic placode and the center of gyration of cylindrical shell are on same center of gyration axis, first plunger return spring skeleton 54 and the second plunger return spring skeleton 57 are sleeved on the major diameter bar of the first guide rod and the second guide rod.

The input end of master brake cylinder 2 and the output push rod 33 of electric machine actuating mechanism B are by two-thread screw static connection; The left side exporting push rod 33 contacts with the right side of master cylinder first plunger 52 and connects; First plunger return spring 53 and the first plunger return spring skeleton 54 are sleeved on the first guide rod of master cylinder first plunger 52 successively; Master cylinder first plunger 52 loads in the first blind hole of master cylinder housing 58; The right side of master cylinder second piston 55 contacts with the left side of the first plunger return spring skeleton 54 and connects; Second plunger return spring 56 and the second plunger return spring skeleton 57 are sleeved on the second guide rod of master cylinder second plunger 55 successively; Master cylinder second plunger 55 loads in the 3rd blind hole of master cylinder housing 58, and the left side of the second plunger return spring skeleton 57 contacts with the right side of master cylinder housing 58 groove and connects; Two oil outlets of oil storage cup 1 are connected with one end interference of special hose, and the other end of special hose is connected with the oil inlet of two on master cylinder housing 58 by the nut with through hole; The return opening of oil storage cup 1 is connected with one end interference of special hose.

Consult Fig. 3, described hydraulic control unit D is made up of compensatory control mechanism and pressure of wheel braking cylinder regulating mechanism;

Described compensatory control mechanism is made up of energy storage pressure sensor 36, safety valve 37, energy storage 38, check valve 39, Hydraulic Pump 40, pump motor 41 and compensation electromagnetic valve 51.

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, pump motor 41 drives Hydraulic Pump 40 to export high-pressure brake liquid, Hydraulic Pump 40 oil inlet is connected with the oil inlet pipeline of safety valve 37 oil outlet with the oil storage cup 1 in brake master cylinder assembly C successively, Hydraulic Pump 40 oil outlet is connected with check valve 39 oil inlet pipeline, check valve 39 oil outlet successively with energy storage 38 hydraulic fluid port, energy storage pressure sensor 36 hydraulic fluid port, compensation electromagnetic valve 51 oil inlet is connected with the oil inlet pipeline of safety valve 37, the oil outlet of compensation electromagnetic valve 51 is connected with the oil outlet pipeline in b chamber with a chamber of master brake cylinder 2.

Described pressure of wheel braking cylinder regulating mechanism regulates normally open solenoid valve 45, second pressure to regulate normally open solenoid valve 46, the 3rd pressure adjustment normally open solenoid valve 48, the 4th pressure to regulate normally open solenoid valve 50 and master cylinder pressure sensor 44 to form by the first low pressure accumulator 47, first low pressure accumulator normally closed solenoid valve 49, second low pressure accumulator 43, second low pressure accumulator normally closed solenoid valve 42, first pressure.

Described first low pressure accumulator normally closed solenoid valve 49, second low pressure accumulator normally closed solenoid valve 42 is high-speed switch valve, and described first pressure regulates normally open solenoid valve 45, second pressure to regulate normally open solenoid valve 46, the 3rd pressure adjustment normally open solenoid valve 48 and the 4th pressure to regulate normally open solenoid valve 50 to be high-speed switch valve or high-speed linear valve;

The oil outlet in a chamber of master brake cylinder 2 and the oil inlet of the first low pressure accumulator normally closed solenoid valve 49, first pressure regulates the oil inlet of normally open solenoid valve 45, second pressure regulates the oil inlet of normally open solenoid valve 46 to be connected with the oil inlet pipeline of master cylinder pressure sensor 44, the oil outlet in the b chamber of master brake cylinder 2 and the oil inlet of the second low pressure accumulator normally closed solenoid valve 42, 3rd pressure regulates the oil inlet of normally open solenoid valve 48 to regulate the oil inlet pipeline of normally open solenoid valve 50 to be connected with the 4th pressure, first low pressure accumulator normally closed solenoid valve 49, second low pressure accumulator normally closed solenoid valve 42 oil outlet successively with the first low pressure accumulator 47, the hydraulic fluid port pipeline of the second low pressure accumulator 43 connects, first pressure regulates normally open solenoid valve 45, second pressure regulates normally open solenoid valve 46, 3rd pressure regulate normally open solenoid valve 48 and the 4th pressure regulate normally open solenoid valve 50 oil outlet successively with front left wheel, front right wheel, rear left wheel is connected with the brake wheel cylinder oil inlet pipeline of rear right wheel.

Described electronic control unit E is made up of central processing unit, incoming signal acquisition process circuit, control signal output circuit, fault diagnosis circuit and power module.

Described power module is provided with output port of power source 1, output port of power source 2, output port of power source 3, output port of power source 4 form, and this module is that electronic control unit E powers;

Described fault diagnosis circuit is provided with energization input mouth and breakdown signal output port, this module Real-Time Monitoring all parts whether et out of order, and in time breakdown signal is passed to central processing unit;

Described central processing unit employing model is that the Freescale chip (or having the singlechip chip of 17 I/O passages) of MC9S12XS128 is provided with energization input, breakdown signal input port, collection signal input port and control signal output port; Central processing unit can receive the status signal of breakdown signal and collection, obtains corresponding control signal by the inside relevant control algorithm to signal transacting.

Described incoming signal acquisition process circuit is provided with energization input mouth, acquisition of signal port one, acquisition of signal port 2, acquisition of signal port 3, acquisition of signal port 4, acquisition of signal port 5, acquisition of signal port 6 and signal output port; Signal acquisition processing circuit by the signal of 8 each sensors of collection terminal mouth Real-time Collection, and sends signal to central processing unit by signal output port;

Described control signal output circuit is provided with energization input mouth, 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 circuit accepts by control signal receiving port the control signal deriving from central processing unit, and sends control signal to each implementation controller by 5 control signal output ports;

The output port of power source 1 of described power module, output port of power source 2, output port of power source 3, output port of power source 4 are connected with the energization input mouth electric wire of fault diagnosis circuit, central processing unit, incoming signal acquisition process circuit, control signal output circuit respectively;

The breakdown signal input port of central processing unit is connected with the breakdown signal output port electric wire of fault diagnosis circuit, the collection signal input port of central processing unit is connected with the signal output port electric wire of incoming signal acquisition process circuit, and the control signal output port of central processing unit is connected with the control signal receiving port electric wire of control signal output circuit; The described acquisition of signal port one of incoming signal acquisition process circuit is connected with the mouth electric wire of master cylinder pressure sensor 44, acquisition of signal port 2 is connected with the mouth electric wire of energy storage pressure sensor 36, acquisition of signal port 3 is connected with the mouth electric wire of rotor-position sensor 12, acquisition of signal port 4 is connected with the mouth electric wire of brake switch 18, acquisition of signal port 5 is connected with the mouth electric wire of brake pedal position sensor 17, and acquisition of signal port 6 is connected with current signal output end mouth 1 electric wire of current sensor;

The control signal output port 1 of described control signal output circuit is connected with control circuit control signal input port 1 electric wire in motor drive controller F, control signal output port 2 and the first pressure regulate the input end electric wire of normally open solenoid valve 45 to be connected, control signal output port 3 and the second pressure regulate the input end electric wire of normally open solenoid valve 46 to be connected, control signal output port 4 and the 3rd pressure regulate the input end electric wire of normally open solenoid valve 48 to be connected, control signal output port 5 and the 4th pressure regulate the input end electric wire of normally open solenoid valve 50 to be connected, control signal output port 6 is connected with the input port electric wire of pump motor, control signal output port 7 is connected with the signal input port electric wire of compensation electromagnetic valve 51, control signal output port 8 is connected with the input end electric wire of the first low pressure accumulator normally closed solenoid valve 49, control signal output port 9 is connected with the input end electric wire of the second low pressure accumulator normally closed solenoid valve 42.

Described motor drive controller F is made up of current sensor, control circuit, driving circuit.

Described current sensor is provided with current signal and gathers port, current signal output end mouth 1, current signal output end mouth 2, current sensor gathers the current signal of actuating motor, and signal is sent to the control circuit in motor drive controller F and the signal acquisition processing circuit in electronic control unit E;

Described control circuit module installation has control signal input port 1, control signal input port 2 and control signal output port, control circuit module Real-time Collection incoming signal, and control signal is exported to driving circuit in real time;

Described drive circuit module is provided with signal input port and drive singal output port, drive circuit module real-time reception control signal, and real-time output drive signal;

The current signal of described current sensor module gathers port one and is connected with the actuating motor electric wire in electric machine actuating mechanism B, and current signal output end mouth 2 is connected with control signal input port 2 electric wire of control circuit; The signal input port of drive circuit module is connected with the control signal output port electric wire of control circuit module, and the drive singal output port of drive circuit module is connected with the actuating motor electric wire in electric machine actuating mechanism B.

The working process of integrate motor electric control braking master cylinder drive system described in the utility model is as follows:

Consult Fig. 1 and Fig. 2; often operating mode complicated and changeable can be run in vehicle traveling process; according to concrete vehicle condition; the brake operating needing chaufeur to make to adapt with it, such as slowly light brake, slowly moderate braking, high-speed running automobile time short time emergency braking slow down and long-time hard brake stop etc.When running car is in normal working, when chaufeur steps on brake pedal 19 pairs of automobiles enforcement brakings, brake pedal 19 promotes input push rod 16, input push rod 16 extrudes plunger push rod 24, plunger push rod 24 crush stroke regulating spring seat 25 moves forward, stroke adjustment spring perch 25 moves forward compression stroke regulating spring 26, stroke adjustment spring 26 is applied on stroke adjustment push rod 30, behind the gap that stroke adjustment push rod 30 moves forward gradually between elimination with rubber reaction plate 32, extruding rubber reaction plate 32 produces application force; Meanwhile, the on-off signal of brake switch 18 sends central processing unit to through signal acquisition processing circuit, middle processing unit sends control signal and is applied on the motor in electric machine actuating mechanism B through control signal output circuit control circuit and driving circuit, motor rotarily drives leading screw screw rod 20 and moves forward, and leading screw screw rod 20 extrudes rubber reaction plate 32 and produces application force; Under the effect of above-mentioned two extruding, drive hydraulic control unit D to produce a certain amount of brake-pressure to brake wheel cylinder, eliminate the gap between brake clamp and friction lining; Now chaufeur can brake off, also can continue to implement braking.If chaufeur release brake pedal 19 brake off, now export the initial condition that push rod 33, stroke pull back spring back seat 34, rubber reaction plate 32, stroke adjustment push rod 30, stroke adjustment spring 26, stroke adjustment spring perch 25, leading screw screw rod 20, plunger push rod 24 and input push rod 16 etc. quickly recover to thorough brake off effect under the effect of various return counter-force, if chaufeur continues to trample brake pedal 19 implement braking, electronic control unit E can continue to detect acquisition brake pedal position sensor 17, master cylinder pressure sensor 44, the control signal of rotor displacement sensor 12 grade, central processing unit is by the control algorithm of itself, process the braking intention that above-mentioned status signal obtains chaufeur, it is slow light brake, slow moderate braking or other situations, according to the braking intention of chaufeur, calculate nominal brake-pressure, the braking-force ratio that the master cylinder pressure obtained with master cylinder pressure sensor 44 again calculates comparatively, determine that braking force is not enough or braking force is excessive, the difference of nominal brake-pressure and actual brake pressure is obtained according to the control algorithm in central processing unit, and the speed of brake pedal 19 is trampled according to chaufeur, the rotor-position that displacement and dynamics and current rotor displacement pickup 12 obtain obtains the drive current needing to be applied to electric machine actuating mechanism B, by electronic control unit E, current signal is exported to motor drive controller F, drive motor makes corresponding rotating forward or reversion action, feed screw nut 13 is driven to advance or retreat rapidly and accurately, the pressure that increase or reduction are applied on rubber reaction plate 32, and then the accurately controlled brake fluid pressure of output makes car deceleration or parking.

Conventional brake mode of operation:

In conventional brake process, system does not trigger the active control functions such as ABS, TCS or ESP, each Controlling solenoid valve in system is in power-off default conditions, chaufeur steps on brake pedal 16, electronic control unit E detects the signal of brake switch 18, brake pedal position sensor 17 fast, thus prediction chaufeur braking intention.Electronic control unit E controls driving governor F drive motor and drives leading screw screw rod 20 quick and precisely to follow speed, the displacement that chaufeur tramples brake pedal, motor and chaufeur apply application force to master brake cylinder 2 jointly, make master cylinder first plunger 52, master cylinder second plunger 55 advances or retreat, the braking liquid that in master brake cylinder 2, a chamber, b chamber export respectively or flow back to regulates normally open solenoid valve enter or discharge brake wheel cylinder through respective brake piping, pressure, realize the conventional brake increase and decrease compression functions of brake wheel cylinder, make car deceleration or parking.

The operating modes such as ABS, TCS or ESP:

Often various complex working condition can be run in running car; such as: on the low attachment road surfaces such as wet and slippery or ice and snow; run at high speed and implement suddenly comparatively to force dynamic, starting to accelerate or under the operating mode such as tempo turn; probably there is wheel lockup and drag sliding, drive wheel to trackslip or the dangerous situation such as run-off-road traveling in automobile, 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 to identify the running state that automobile is current by the signal such as timely collection automobile longitudinal and lateral acceleration, yaw velocity, side slip angle, wheel speed, is exported in real time various control signal and regulates normally open solenoid valve etc. to complete the supercharging of brake wheel cylinder, pressurize and decompression adjustment to the pressure of electric machine actuating mechanism B, compensation electromagnetic valve 51, low pressure accumulator electromagnetic valve, each brake wheel cylinder.

The basic controlling rule that effectively controls fast that control presssure regulable control algorithm in this device all realizes each road pressure of wheel cylinder is: (1) default decompression adjustment has limit priority, namely when electronic control unit E judge draw in a certain control cycle have one or more wheel cylinder to reduce pressure time, first meet their decompression demand, (2), when all brake wheel cylinder is all without decompression demand, each brake wheel cylinder pressurize or supercharging is made according to automobile real-time running state, (3) when a certain road or the decompression of multichannel brake wheel cylinder, electronic control unit E output multi-channel control signal control simultaneously motor reverses rapidly and drives leading screw screw retreats, the pressure of pressure m wheel cylinder is needed to regulate electric-opening on normally open solenoid valve power-off unlatching and low pressure accumulator normally closed solenoid valve, need pressure m wheel cylinder inside brake liquid through brake piping, corresponding pressure regulates normally open solenoid valve, low pressure accumulator normally closed solenoid valve is introduced in low pressure accumulator, then flow in master brake cylinder, complete the decompression cycle of corresponding brake wheel cylinder fast, different vacuum flow regulating between brake wheel cylinder is realized by the average opening time length of Controlling solenoid valve, other brake wheel cylinder without decompression demand implements pressurize in the process, in decompression process, because motor reversal drives leading screw screw retreats, chaufeur now can feel the sensation being similar to " top pin " in conventional braking system ABS working process, the leading screw inside screw of this programme has stroke control mechanism, stroke control mechanism mainly comprises stroke adjustment push rod, stroke adjustment spring and stroke adjustment spring pedestal, leading screw screw rod is by stroke adjustment push rod crush stroke regulating spring, chaufeur now can feel be similar to conventional braking system ABS working process medium and low frequency vibration treadle effort sense, the stroke vibration amplitude of input push rod is zero substantially, pedal sense is better.

Claims

1. an integrate motor electric control braking master cylinder drive system, includes brake pedal operation mechanism (A), brake master cylinder assembly (C), hydraulic control unit (D), electronic control unit (E) and motor drive controller (F); It is characterized in that, described integrate motor electric control braking master cylinder drive system also includes electric machine actuating mechanism (B), and described electric machine actuating mechanism (B) includes leading screw screw mechanism, stroke return mechanism, input sealing mechanism, shell mechanism, leading screw screw drive, clutch shaft bearing (5), the second bearing (9) and rotor-position sensor (12);

Described shell mechanism includes front end cover (3), casing (7), middle end cap (10) and rear side housing (11);

The right-hand member circular disk of front end cover (3) and the left flange plate of casing (7) with bolts, right flange and the middle end cap (10) of casing (7) are with bolts, and left end flange and the middle end cap (10) of rear side housing (11) are with bolts;

Stroke return mechanism is arranged in front end cover (3), leading screw screw mechanism adopts clutch shaft bearing (5) and the second bearing (9) to be arranged on front end cover (3) with on middle end cap (10), and be among rear side housing (11), the right side of the stroke pull back spring back seat (34) in stroke return mechanism contacts with the left side of the leading screw screw rod (20) in leading screw screw mechanism and connects, the 3rd section of axle that leading screw screw drive is sleeved on the feed screw nut (13) in leading screw screw mechanism is key connects, rotor-position sensor (12) is sleeved on the first paragraph axle of feed screw nut (13), and be in the right cylinder of rear side housing (11), input sealing mechanism is arranged in the first ladder blind hole of leading screw screw rod (20).

2. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described leading screw screw mechanism also includes plunger push rod (24), stroke adjustment spring perch (25), stroke adjustment spring (26), ball body (27), stroke adjustment push rod (30), adjusting base (31), rubber reaction plate (32) and exports push rod (33);

It is connection of rolling that feed screw nut (13) is sleeved on leading screw screw rod (20) upper by ball body (27), stroke adjustment spring perch (25) loads the right-hand member of leading screw screw rod (20) first ladder blind hole, be free-running fit between stroke adjustment spring perch (25) and the first ladder blind hole of leading screw screw rod (20), be bearing fit in the groove of plunger push rod (24) loading stroke adjustment spring perch (25), 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), the right-hand member of stroke adjustment spring (26) is connected with the recessed circle of left end annular stop of stroke adjustment spring perch (25), the left end of stroke adjustment spring (26) embeds in the annular stop groove on the stroke adjustment push rod (30) that is arranged in the second ladder blind hole, the left end of left section of axle of stroke adjustment push rod (30) embeds in the intercommunicating pore of leading screw screw rod (20), and extend in the 3rd ladder blind hole of leading screw screw rod (20), adjusting base (31) is enclosed in the 3rd ladder blind hole of leading screw screw rod (20), the left end of left section of axle of stroke adjustment push rod (30) inserts the interstitial hole of adjusting base (31) and contacts with the right side of round rubber reaction plate (32), and rubber reaction plate (32) loads in the groove on the right-hand member disk exporting push rod (33) for contact connects, the right-hand member disk exporting push rod (33) loads in the 3rd ladder blind hole of leading screw screw rod (20).

3. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described feed screw nut (13) is the cylindrical element of a hollow, the left end of feed screw nut (13) centre hole is provided with the I.S.S raceway matched with ball body (27), feed screw nut (13) excircle is arranged to the different stepped shaft of diameter, be followed successively by the first paragraph axle installing rotor-position sensor (12) from right to left, the second segment axle of No. 2 bearings (9) is installed, 3rd section of axle and the 4th section of axle installing No. 1 bearing (5) of mounting rotor of electric motor yoke (28), the diameter of the 3rd section of axle is maximum, 4th section of axle is identical with the diameter of second segment axle, the diameter of first paragraph axle is minimum.

4. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described leading screw screw rod (20) is a cylindrical element, the external cylindrical surface of the right-hand member of leading screw screw rod (20) being provided with vertically right-hand member is unlimited groove, external cylindrical surface on the left of open channel is provided with the external thread type raceway matched with ball body (27), 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), the right-hand member of leading screw screw rod (20) is provided with ladder blind hole vertically, left end is set to left blind hole i.e. the 3rd ladder blind hole vertically, the intercommunicating pore both be communicated with is provided with vertically between the ladder blind hole of right-hand member and the left blind hole of left end, the ladder blind hole of right-hand member, intercommunicating pore, the left blind hole of left end and the rotation axis conllinear of leading screw screw rod (20), the ladder blind hole of right-hand member is followed successively by the first ladder blind hole and the second ladder blind hole from right to left.

5. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described leading screw screw drive includes motor stator winding (6), rotor (8), rotor yoke (28) and motor rotor magnetic steel (29);

The 3rd section of axle that described rotor yoke (28) is sleeved on feed screw nut (13) adopt key to connect, it the outer ring that motor rotor magnetic steel (29) is sleeved on rotor yoke (28) is close fit, be free-running fit between the outer ring of motor rotor magnetic steel (29) and the inner ring of rotor (8), the outer ring of rotor (8) and the inner ring of casing (7) are free-running fit, rotor (8) is around there being motor stator winding (6), and motor stator winding (6) and the inner ring of casing (7) are that close fit is connected.

6. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described input sealing mechanism includes dust boot (15), the first pull back spring (21), the second pull back spring (22) and rubber gasket (23);

Dust boot (15), first pull back spring (21), second pull back spring (22) and rubber gasket (23) are placed in the first ladder blind hole of leading screw screw rod (20) from right to left successively, dust boot (15), first pull back spring (21), second pull back spring (22) contacts connection successively with rubber gasket (23), dust boot (15), first pull back spring (21), second pull back spring (22) and rubber gasket (23) are sleeved on the input push rod (16) in brake pedal operation mechanism (A), the left side of rubber gasket (23) contacts with the right side of stroke adjustment spring perch (25) and connects.

7. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described stroke return mechanism is made up of with stroke pull back spring front stall (35) stroke pull back spring (4), stroke pull back spring back seat (34);

Described stroke pull back spring back seat (34) is disc-shaped structure part, be made up of the torus of left end and the circle ring disk of right-hand member, toric right-hand member is connected with the left side of circle ring disk, the right side of circle ring disk is annular plane, the rotation axis conllinear of the central through hole on toric rotation axis and circle ring disk, toric internal orifice dimension is equal with the aperture of the central through hole on circle ring disk, the left end rod diameter of the output push rod (33) in the aperture of the central through hole on toric internal orifice dimension or circle ring disk and leading screw screw mechanism is equal, namely two circle torus are inwardly provided with from the edge of circle ring disk protruding around toric, the spring retainer groove placing stroke pull back spring (4) is arranged between two circle torus projections,

One end of stroke pull back spring (4) is placed in the spring retainer groove of stroke pull back spring back seat (34), the other end of stroke pull back spring (4) is placed in the spring retainer groove of stroke pull back spring front stall (35), stroke pull back spring front stall (35) is fixedly connected with front end cover (3) by screw, and the central through hole on stroke pull back spring back seat (34) is equipped with as bearing fit with output push rod (33).

8. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, described hydraulic control unit (D) is made up of compensatory control mechanism and pressure of wheel braking cylinder regulating mechanism;

Described compensatory control mechanism comprises energy storage pressure sensor (36), safety valve (37), energy storage (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 inlet of Hydraulic Pump (40) is connected with the oil inlet pipeline of the oil outlet of safety valve (37) with the oil storage cup (1) in brake master cylinder assembly (C) successively, the oil outlet of Hydraulic Pump (40) is connected with the oil inlet pipeline of check valve (39), the oil outlet of check valve (39) successively with the hydraulic fluid port of energy storage (38), the hydraulic fluid port of energy storage pressure sensor (36), the oil inlet of compensation electromagnetic valve (51) is connected with the oil inlet pipeline of safety valve (37), the oil outlet of compensation electromagnetic valve (51) is connected with the oil outlet pipeline in b chamber with a chamber of master brake cylinder (2),

Described pressure of wheel braking cylinder regulating mechanism regulates normally open solenoid valve (45), the second pressure adjustment normally open solenoid valve (46), the 3rd pressure to regulate normally open solenoid valve (48), the 4th pressure adjustment normally open solenoid valve (50) and master cylinder pressure sensor (44) to form 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;

The oil outlet in a chamber of master brake cylinder (2) and the oil inlet of the first low pressure accumulator normally closed solenoid valve (49), first pressure regulates the oil inlet of normally open solenoid valve (45), second pressure regulates the oil inlet of normally open solenoid valve (46) to be connected with the oil inlet pipeline of master cylinder pressure sensor (44), the oil outlet in the b chamber of master brake cylinder (2) and the oil inlet of the second low pressure accumulator normally closed solenoid valve (42), 3rd pressure regulates the oil inlet of normally open solenoid valve (48) to regulate the oil inlet pipeline of normally open solenoid valve (50) to be connected with the 4th pressure, first low pressure accumulator normally closed solenoid valve (49), second low pressure accumulator normally closed solenoid valve (42) oil outlet successively with the first low pressure accumulator (47), the hydraulic fluid port pipeline of the second low pressure accumulator (43) connects, first pressure regulates normally open solenoid valve (45), second pressure regulates normally open solenoid valve (46), the oil outlet that 3rd pressure regulates normally open solenoid valve (48) and the 4th pressure to regulate normally open solenoid valve (50) successively with front left wheel, front right wheel, rear left wheel is connected with the brake wheel cylinder oil inlet pipeline of rear right wheel.

9. according to integrate motor electric control braking master cylinder drive system according to claim 1, it is characterized in that, input push rod (16) in described brake pedal operation mechanism (A) to insert in the input sealing mechanism of electric machine actuating mechanism (B) and adopts ball pivot to be connected with the right-hand member of the plunger push rod (24) in the leading screw screw mechanism of electric machine actuating mechanism (B), the input end of the master brake cylinder (2) in brake master cylinder assembly (C) and the output push rod (33) of electric machine actuating mechanism (B) utilize double end stud to be fixedly linked, the rotation axis of master brake cylinder (2) and the rotation axis conllinear of output push rod (33) and input push rod (16), the oil outlet of the compensation electromagnetic valve (51) in a chamber oil outlet of master brake cylinder (2) and hydraulic control unit (D), the oil inlet of the first low pressure accumulator normally closed solenoid valve (49) is connected with the oil inlet pipeline of master cylinder pressure sensor (44), the oil outlet of the compensation electromagnetic valve (51) in the oil outlet in master brake cylinder (2) b chamber and hydraulic control unit (D), the oil inlet of master cylinder pressure sensor (44) is connected with the oil inlet pipeline of the second low pressure accumulator normally closed solenoid valve (42),

Incoming signal acquisition process circuit in electronic control unit (E) is connected with the brake pedal displacement pickup (17) in the master cylinder pressure sensor (44) in hydraulic control unit (D), energy storage pressure sensor (36), brake pedal operation mechanism (A), the brake switch (18) in brake pedal operation mechanism (A), current sensor, rotor-position sensor (12) and power module circuitry electric wire respectively, control signal output circuit in electronic control unit (E) respectively with the pump motor (41) in hydraulic control unit (D), first pressure regulates normally open solenoid valve (45), second pressure regulates normally open solenoid valve (46), 3rd pressure regulates normally open solenoid valve (48), 4th pressure regulates normally open solenoid valve (50), compensation electromagnetic valve (51), second low pressure accumulator normally closed solenoid valve (42), first low pressure accumulator normally closed solenoid valve (49), the control circuit electric wire of power module and motor drive controller connects, fault diagnosis circuit in electronic control unit (E) is connected with power module circuitry,

The acquisition of signal end of the current sensor in motor drive controller (F) is connected with the signal output part circuit lines of the actuating motor in electric machine actuating mechanism (B), the signal output part of current sensor is connected with the first input end circuit lines of the control circuit in motor drive controller (F), second input end of control circuit is connected with the circuit of output terminal electric wire of the control signal output circuit in electronic control unit (E), the mouth of control circuit is connected with the inlet circuit electric wire of driving circuit, the mouth of driving circuit is connected with the signal input part circuit lines of the actuating motor in electric machine actuating mechanism (B).