CN108501913A - A kind of brake pedal travel simulator - Google Patents
A kind of brake pedal travel simulator Download PDFInfo
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- CN108501913A CN108501913A CN201810507745.5A CN201810507745A CN108501913A CN 108501913 A CN108501913 A CN 108501913A CN 201810507745 A CN201810507745 A CN 201810507745A CN 108501913 A CN108501913 A CN 108501913A
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- Prior art keywords
- piston
- simulator
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- hole
- bearing
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
- B60T8/4086—Systems with stroke simulating devices for driver input the stroke simulating device being connected to, or integrated in the driver input device
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of brake pedal travel simulators, it is intended to overcome the prior art to exist excessively high to the requirement of hydraulic regulation unit performance, insufficient problem is utilized to existing component.It includes simulator driving mechanism and simulator executing agency two parts.Simulator driving mechanism includes electric machine controller, motor, first bearing, flat key, sun gear, partition board, second bearing, ball, spring washer, lead screw mandril, planetary gear shaft spacing ring, planet carrier, planetary gear shaft, planetary gear bearing, planetary gear, gear ring, rear cover.Simulator executing agency includes rubber block, second piston, first piston spring, first piston spring base, simulator cylinder body, first piston, first piston sealing ring, second piston sealing ring, second piston spring.Simulator cylinder body connect bolt by four partition boards with partition board and is connected, and rubber block is sleeved on the post portion of lead screw mandril with second piston.
Description
Technical field
The present invention relates to a kind of automobile brake pedal stroke simulators, it more particularly relates to a kind of braking
Pedal travel simulator.
Background technology
New-energy automobile introduces regenerative braking system to reach the target for reducing energy consumption, promoting continual mileage
System.Currently, in order to obtain good braking ability and meet the requirement of relevant laws and regulations, existing regeneration brake system is all made of biography
System hydraulic pressure (or air pressure) brakes the mode being combined with motor regenerative braking.
In order to promote the energy recovery rate of regeneration brake system, need to motor braking power and hydraulic pressure (or air pressure) brake force
Reasonably distribute and adjust, while pedal travel analog functuion being added in conventional hydraulic braking system, so as in motor
The brake pedal of regeneration brake system is allowed still to have the pedal sense close to traditional braking pedal when being braked.It is asked for this
Topic, external manufacturer and research institution are usually all solved by carrying out complete redesign to brake fluid system,
If the Chinese patent publication No. of Magna Powertrain AG ＆ Co. KG is CN101927758A, date of publication 2010
It is on December 29, in, entitled " brake pedal simulator and braking system "；The Chinese patent of Toyota Motor Corporation rep.
Publication No. is CN102066167A, and date of publication is on May 18th, 2011, entitled " stroke simulator and brake control
Device processed "；The Chinese patent publication No. of Robert Bosch Co., Ltd is CN102256842A, and date of publication is in November, 2011
23 days, entitled " brake booster works as pedal simulator and the brake booster through respective design " and Ai Pijia
The Chinese patent publication No. of special joint-stock company is CN102582595A, and date of publication is on July 18th, 2012, entitled " row
Journey simulator ".
For domestic automobile vendor, because component resource and technology are relatively deficient, hydraulic pressure system is redesigned completely
Dynamic system will face the problem that difficulty is big, the period is long, of high cost, be unfavorable for market competition.Currently, domestic only have Zhejiang Asia-Pacific machine
It is CN101879891A that the Chinese patent of electric limited liability company, which announces (announcement) number, and announcement (announcement) day is on November 10th, 2010,
Chinese Patent Application No. is CN201010214778.4, entitled " simulator for feeling automobile brake pedal "；Chinese patent
It is CN102294997A to announce (announcement) number, and announcement (announcement) day is on December 28th, 2011, and Chinese Patent Application No. is
CN201110160378.4, it is entitled " simulator for feeling automobile brake pedal ", it is proposed that two are based on existing hydraulic pressure system
The improvement project of dynamic system.The two schemes have exceeded the performance requirement of hydraulic regulation unit existing when realizing pressure adjustment
The ability for having product is still not enough the utilization of existing component resource.
Therefore, it is necessary to a device is developed, it can be in the premise without substantially being changed to former brake fluid system
Under, the function that pressure is adjusted and pedal sense is simulated is realized, to coordinate motor to carry out regenerative braking.In this way, on the one hand can be with
Meet functional requirement of the regeneration brake system for conventional hydraulic braking system, while research and development and production cost can also be reduced,
Shorten the R＆D cycle.
Invention content
The technical problem to be solved by the present invention is to overcome the prior art in the presence of the performance requirement to hydraulic regulation unit
The ability for having exceeded existing product the problem of being still not enough to the utilization of existing component resource, provides a kind of brake and steps on
Plate stroke simulator.
In order to solve the above technical problems, the present invention adopts the following technical scheme that realization：
The brake pedal travel simulator includes simulator driving mechanism and simulator executing agency two parts；It is described
Simulator driving mechanism include electric machine controller, motor, first bearing, flat key, sun gear, partition board, second bearing, lead screw
Mandril, planetary gear shaft spacing ring, planet carrier, planetary gear shaft, planetary gear bearing, planetary gear, gear ring, rear cover；It is described
Simulator executing agency include simulator cylinder body；
Electric machine controller is bolted at the left end circular hole of rear cover, and motor is mounted on electric machine controller right side
On, motor is connect with electric machine controller output end electric wire, and first bearing is sleeved on the output shaft of motor, and motor passes through
Flat key is connected with sun gear transition, and gear ring is fixed in the major diameter round hole of rear cover, and the inner ring of gear ring is engaged with planet tooth
Wheel, planetary gear are sleeved in planetary gear shaft successively with planetary gear bearing, and planetary gear engages connection, planet with sun gear
Frame is sleeved in planetary gear shaft, and planetary gear shaft spacing ring is mounted in planetary gear shaft right end circular groove, lead screw mandril
To roll connection, partition board and rear cover rivet interlacement in the central through hole of left section of loading planet carrier, lead screw mandril passes through in partition board
Heart through-hole, second bearing are sleeved on right end on the cylindrical boss of planet carrier and are contacted with the left end of partition board, simulator cylinder body with every
Plate is to be bolted.
Planet carrier described in technical solution is regular triangular prism class formation part, and circular cylindrical projection is provided at triangle center
Platform, the boss center of circle are overlapped with triangle center, and boss circle centre position is machined with central through hole, is arranged on the inner cylinder face of central through hole
The raceway for having installation ball, there are three slotted holes, three vertex of planet carrier to be also machined with for processing on the outside of cylindrical boss
The round heart of distribution of the identical circular through hole of three diameters, circular through hole is overlapped with triangle center, three apex angles of planet carrier
Also rounded corner processing is done.
Sun gear, planetary gear, gear ring described in technical solution are all made of straight spur gear, and wherein sun gear is processed
There is the centre bore with flat key keyway, two sections of stepped holes are machined on planetary central axes.
Planetary gear shaft described in technical solution is three sections of multi-diameter shafts, and the diameter of axle is gradually reduced from left to right, wherein right end
The circular groove for installing planetary gear shaft spacing ring is machined in small diameter shaft.
Lead screw mandril described in technical solution is formed by two sections, and left section is to match with the central through hole and ball of planet carrier
The lead screw for being provided with spiral rolling track closed, right section is the smooth cylindrical slide bar in surface.
Simulator executing agency described in technical solution further includes rubber block, second piston, first piston spring, first
Piston spring seat, first piston, first piston sealing ring, second piston sealing ring, second piston spring；The first piston
Sealing ring, second piston sealing ring be respectively fitted over first piston, second piston annular groove in, first piston and second piston phase
After in the interstitial hole and left hole mounted on simulator cylinder body, to be slidably connected, first piston spring base is welded on first piston
Center at, first piston spring and second piston spring are respectively arranged in the left end shaft of first piston spring base and second piston
On, the left side of first piston spring is in contact with the right side of second piston, and the right side of first piston spring is lived with first
The left side of plug is in contact, and the left side of second piston spring is in contact with the right side of partition board, the right end of second piston spring
Face is in contact with the left side of second piston major diameter axis, and the right side of rubber block and the left side of second piston pass through heat bonding
Agent connect, rubber block, second piston, first piston spring base, simulator cylinder body, first piston rotation conllinear.
Simulator cylinder body described in technical solution is cylindrical parts structural member, and left end right end is open, in left end nozzle
External cylindrical surface on be provided with ring flange for installation, uniformly distributed on ring flange there are four bolts hole, along simulator cylinder body
Axis is machined with the stepped hole of three-stage cylinder, and the diameter of three-stage stepped hole from left to right successively decreases successively, wherein right ports
K2 is simulator cylinder body into oil outlet, and is processed into internal thread hole, and the cylindrical wall of left hole is also machined with venthole K1, three sections
Formula cylindrical stepped holes are connected with each other logical and rotation conllinear.
Second piston described in technical solution is two-part multi-diameter shaft, and the right end diameter of axle is larger, on the cylindrical surface of right end axis
It is machined with the annular groove for placing sealing ring, the left end diameter of axle is smaller, for installing second piston spring, along multi-diameter shaft revolution
Heart line is machined with circular through hole, and through-hole diameter is slightly larger than the slide bar diameter of lead screw mandril；The first piston is cylindrical ties
Component is machined with the annular groove for placing sealing ring on the cylindrical surface on first piston periphery.
Output shaft, first bearing, sun gear, partition board, the second axis of electric machine controller, motor described in technical solution
It holds, the rotation conllinear of lead screw mandril, planet carrier, gear ring, rear cover, simulator cylinder body, planetary gear shaft, planetary gear shaft
It holds, planetary axis of rotation and electric machine controller, the output shaft of motor, first bearing, sun gear, partition board, the second axis
Hold, lead screw mandril, planet carrier, gear ring, rear cover, the axis of rotation of simulator cylinder body it is parallel.
Compared with prior art the beneficial effects of the invention are as follows：
1. a kind of brake pedal travel simulator integrated level of the present invention is high, the function of itself is relatively complete, and connects
Mouth is simple, it may be convenient to be integrated in existing brake fluid system.Automobile vendor need to only be modified brake piping,
A small amount of solenoid valve is added, you can accessed among traditional brake fluid system.
2. a kind of brake pedal travel simulator of the present invention uses planetary gear coaxial gear set, the mechanism
Input and output shaft is coaxial, stable movement, large carrying capacity, and anti shock and vibration ability is strong, long working life.Planet tooth is used simultaneously
It is compact to take turns drive mechanism, space availability ratio is high, can significantly reduce the quality and volume of brake pedal travel simulator.
3. a kind of brake pedal travel simulator of the present invention is integrated with function of increasing pressure and pedal sense analog functuion,
Compensate for the deficiency that conventional hydraulic adjusts cell pressure regulating power.Automobile vendor can be allowed in existing conventional hydraulic braking system
Increase both functions on the basis of system, increases flexibility and accuracy that brake fluid system is adjusted.
4. a kind of brake pedal travel simulator of the present invention is simulated using the elastic element of two kinds of different-stiffness
Pedal sense so that simulation pedal force curve with tradition pedal force curve be more nearly, so as to so that pedal sense closer to
Conventional hydraulic braking system.
5. a kind of brake pedal travel simulator of the present invention may be mounted at hybrid vehicle and electric vehicle
Braking system in, adjusted by accurate brake pressure, hydraulic braking can be allowed preferably to coordinate with motor braking, maximum journey
The ability of the performance motor regenerative braking of degree, is substantially improved the economy of hybrid vehicle and electric vehicle.
Description of the drawings
The present invention will be further described below with reference to the drawings：
Fig. 1 is a kind of structure composition schematic diagram of brake pedal travel simulator of the present invention；
Fig. 2 is the front view of planetary gear mechanism in a kind of brake pedal travel simulator of the present invention；
In figure：1. electric machine controller, 2. motor, 3. first bearings, 4. flat keys, 5. sun gears, 6. partition boards, 7. rear covers connect
Connect rivet, 8. second bearings, 9. balls, 10. spring washers, 11. rubber blocks, 12. second pistons, 13. first piston springs,
14. first piston spring base, 15. simulator cylinder bodies, 16. first pistons, 17. first piston sealing rings, 18. lead screw mandrils, 19.
Second piston sealing ring, 20. second piston springs, 21. partition boards connection bolt, 22. planetary gear shaft spacing rings, 23. planet carriers,
24. planetary gear shaft, 25. planetary gear bearings, 26. planetary gears, 27. gear rings, 28. rear covers, 29. rear covers connect bolt.
Specific implementation mode
The present invention is explained in detail below in conjunction with the accompanying drawings：
A kind of brake pedal travel simulator of the present invention includes simulator driving mechanism and simulator executing agency
Two parts.
Refering to fig. 1, the simulator driving mechanism include electric machine controller 1, motor 2, first bearing 3, flat key 4,
Sun gear 5, partition board 6, rear cover connection rivet 7, second bearing 8, ball 9, spring washer 10, lead screw mandril 18, planetary gear shaft
Spacing ring 22, planet carrier 23, planetary gear shaft 24, planetary gear bearing 25, planetary gear 26, gear ring 27, rear cover 28, rear cover connect
Connecting bolt 29.
The rear cover 28 is stepped cylindrical parts structural member, left end closing, right-end openings, there are four left end processing
Uniformly distributed bolt hole, is provided with the ring flange for installation on the external cylindrical surface of right end nozzle, and uniformly distributed on ring flange there are six rivetings
Nail hole；Stepped hole is machined on the central axes of rear cover 28, left end is installation electric machine controller 1, motor 2 and first bearing 3
Minor diameter circular hole, right end be install gear ring 27 major diameter round hole, two circular holes interconnect and rotating shaft is conllinear.
The motor 2 uses brushed DC permanent magnet motor, output end to be machined with flat key keyway, and motor 2 is
The power source of simulator driving mechanism.
The flat key 4 uses common A types flat key, can be by the torque transfer of motor 2 to sun gear 5 by flat key 4.
The sun gear 5, planetary gear 26, gear ring 27 are all made of straight spur gear, wherein sun gear 5 be machined with
The matched centre bore of output shaft of motor 2, is machined with flat key keyway in centre bore, and sun gear 5 plays that transmit motor 2 defeated
Go out the effect of torque；Stepped hole, wherein left end minor diameter circular hole and planetary gear shaft are machined on the central axes of planetary gear 26
24 match, and right end major diameter round hole is for installing planetary gear bearing 25；
The planetary gear shaft 24 is multi-diameter shaft, and the diameter of axle is gradually reduced from left to right, and wherein left end major diameter axis acts on
For the axial displacement of restrictions planetary gear 26, jackshaft is matched with planetary gear 26 and planetary gear bearing 25, and right end is small straight
Journal axle is matched with planet carrier 23, and is machined with the circular groove for installing planetary gear shaft spacing ring 22.
The planetary gear bearing 25 uses needle bearing, and it acts as the radial forces for bearing planetary gear 26.
Referring to Fig.2, the planet carrier 23 is regular triangular prism class formation part, circular cylindrical projection is provided at triangle center
Platform, the boss center of circle are overlapped with triangle center, and boss circle centre position is machined with central through hole, is arranged on the inner cylinder face of central through hole
There is the raceway of installation ball 9；In order to reduce the rotary inertia of planet carrier 23, there are three oval for processing on the outside of cylindrical boss
Hole；Three vertex of planet carrier 23 are also processed there are three the identical circular through hole of diameter, the round heart of distribution of circular through hole with
Triangle center overlaps, and three apex angles of planet carrier also do rounded corner processing.
The planetary gear shaft spacing ring 22 is ring-shaped structure part, using aluminum alloy materials, in order to facilitate the installation of, circle
It is processed on ring jagged.Planetary gear shaft spacing ring 22 act as the axial displacement of limitation planet carrier 23.
The lead screw mandril 18 is formed by two sections, and left section is matched with the central through hole and ball 9 of planet carrier 23
It is provided with the lead screw of spiral rolling track；Right section is the smooth cylindrical slide bar in surface.Lead screw mandril 18 is played the rotation of planet carrier 23
Transhipment turn turns to the effect of linear motion.
The first bearing 3 is all made of deep groove ball bearing with second bearing 8, and wherein first bearing 3 can bear motor 2
The radial forces of output end, at the same also can restrictions planetary gear 26 and sun gear 5 axial displacement；Second bearing 8 is mainly made
With the axial displacement for being limitation planet carrier 23.
The partition board 6 is disc-like structural member, and the center is machined with central through hole, is also processed in the plane of partition board 6
There are six uniformly distributed rivet hole, four uniformly distributed bolts hole, rivet pore size distribution circle and bolthole circle with 6 arranged concentric of partition board.
The rear cover connection rivet 7 uses snap rivet, act as connection rear cover 28 and partition board 6.
The rear cover connection bolt 29 uses common closely-pitched hex bolts, for fixing electric machine controller 1.
The position of specific component and connection type are：After electric machine controller 1 is fixed on by four rear covers connection bolts 29
At the left end minor diameter circular hole of lid 28, motor 2 is mounted on the right side of 1 shell of electric machine controller, the terminals of motor 2
It is connected on drive output of electric machine controller 1.First bearing 3 is sleeved on the output shaft of motor 2, left end and electricity
The right side of motivation 2 contacts, and first bearing 3 and the output between centers of motor 2 are gap-matched.The output shaft of motor 2 is logical
It crosses flat key 4 with sun gear 5 to be connected, the two is coordinated using transition, and sun gear 5 is conllinear with the output shaft revolution of motor 2.Gear ring
27 are fixed in the major diameter round hole of rear cover 28, and inner ring is uniformly arranged there are three planetary gear 26, and the two is engaged by gear
Connection.Planetary gear 26 is sleeved on planetary gear bearing 25 in planetary gear shaft 24 successively, planetary gear shaft 24 and planet tooth
It is clearance fit between wheel 26 and planetary gear bearing 25.Planetary gear 26 engages connection, planet carrier with sun gear 5 by gear
23 are finally sleeved in planetary gear shaft 24, are gap-matched between planet carrier 23 and planetary gear shaft 24.By planetary gear shaft
Spacing ring 22 is mounted in 24 right end circular groove of planetary gear shaft, and planetary gear mechanism is made to be connected.Lead screw mandril 18 is pacified
In the central through hole of planet carrier 23, spring washer 10 is sleeved at 18 left sections of lead screws of lead screw mandril, 10 left end of spring washer
It is in contact with the boss right end of planet carrier 23, ball 9 is housed between the lead screw in the central through hole and lead screw mandril 18 of planet carrier 23,
Lead screw mandril 18 is driven by ball 9, ball (can not be drawn by the cycle raceway in the central through hole of planet carrier 23 on figure
Go out) it is recycled.Partition board 6 is connected with rear cover 28 by six rear cover connection rivets 7, and the post portion of lead screw mandril 18 passes through
The central through hole of partition board 6, and have certain interval between central through hole.Second bearing 8 is sleeved on the cylindrical boss of planet carrier 23
On, the two is gap-matched, and the right end of second bearing 8 is contacted with the left end of partition board 6, realizes the axially position of planet carrier 23.
Wherein：Electric machine controller 1, the output shaft of motor 2, first bearing 3, sun gear 5, partition board 6, second bearing 8, spring washer
10, the rotation conllinear of lead screw mandril 18, planet carrier 23, gear ring 27, rear cover 28；Planetary gear shaft 24, planetary gear bearing
25, the axis of rotation of planetary gear 26 and electric machine controller 1, the output shaft of motor 2, first bearing 3, sun gear 5, partition board 6,
Second bearing 8, spring washer 10, lead screw mandril 18, planet carrier 23, gear ring 27, the axis of rotation of rear cover 28 are parallel.
Refering to fig. 1, the simulator executing agency includes rubber block 11, second piston 12, first piston spring 13,
One piston spring seat 14, simulator cylinder body 15, first piston 16, first piston sealing ring 17, second piston sealing ring 19, second
Piston spring 20, partition board connect bolt 21.
The simulator cylinder body 15 is cylindrical parts structural member, and left end right end is open, in the outside cylinder of left end nozzle
It is provided with the ring flange for installation on face, uniformly distributed on ring flange there are four bolts hole；Add along the central axes of simulator cylinder body 15
Work has the stepped hole of three-stage cylinder, the diameter of three-stage stepped hole from left to right to successively decrease successively, and wherein right ports K2 is mould
Quasi- device cylinder body 15 into oil outlet, and be processed into internal thread hole, interstitial hole is used for installing first piston 16, and left hole is used for installing
The cylindrical wall of second piston 12, left hole is also machined with venthole K1, is used for and external aeration.Three-stage cylindrical stepped holes that
This is connected and rotation conllinear.
The first piston spring 13 uses cylindrically coiled spring, and rigidity is smaller, and main analog small intensity brakes hour wheel
Cylinder pressure volume characteristic.
The second piston spring 20 uses cylindrically coiled spring, and rigidity is larger, and the big intensity of main analog brakes hour wheel
Cylinder pressure volume characteristic.
The rubber block 11 is cylindrical rubber material, and center is equipped with circular through hole, and rubber block 11 is used for second piston
12 buffer shock-absorbing.
The first piston spring base 14 is cylindrical structure part, for installing fixed first piston spring 13.
The first piston sealing ring 17, second piston sealing ring 19 are O-ring seals, for the close of brake fluid
Envelope.
The first piston 16 is cylindrical disc class formation part, is machined with and is used on the cylindrical surface on 16 periphery of first piston
Place the annular groove of sealing ring.
The second piston 12 is two-part multi-diameter shaft, and the right end diameter of axle is larger, is processed on the cylindrical surface of right end axis useful
In the annular groove for placing sealing ring, the left end diameter of axle is smaller, for installing second piston spring 20.Add along multi-diameter shaft centre of gyration line
Work has circular through hole, through-hole diameter to be slightly larger than the slide bar diameter of lead screw mandril 18.
The partition board connection bolt 21 uses common closely-pitched hex bolts, is used for connecting partition 6 and simulator cylinder body 15.
The position of specific component and connection type are：First piston sealing ring 17, second piston sealing ring 19 are respectively fitted over
First piston 16, second piston 12 annular groove in, first piston 16 and second piston 12 are mounted on simulator cylinder body 15 in succession
Interstitial hole and left hole in, to be slidably connected；First piston spring base 14 is welded at the center of first piston 16；First lives
Plug spring 13 and second piston spring 20 are respectively arranged in the left end shaft of first piston spring base 14 and second piston 12, and first
The left side of piston spring 13 is in contact with the right side of second piston 12, the right side of first piston spring 13 and first piston
16 left side is in contact, and the left side of second piston spring 20 is in contact with the right side of partition board 6, second piston spring 20
Right side is in contact with the left side of 12 major diameter axis of second piston；The left side of the right side and second piston 12 of rubber block 11
It is connected by heat adhesive.Rubber block 11, second piston 12, first piston spring base 14, simulator cylinder body 15, first piston 16
Rotation conllinear.
Connection relation between simulator driving mechanism provided by the invention and simulator executing agency is：Simulator cylinder body 15
Bolt 21 is connect with partition board 6 by four partition boards to be connected, rubber block 11 is sleeved on the cunning of lead screw mandril 18 with second piston 12
Bar part, there are gaps between the slide bar and second piston 12 and the interstitial hole of rubber block 11 of lead screw mandril 18.Simulator cylinder body 15,
The rotation conllinear of rear cover 28, partition board 6.
A kind of brake pedal travel simulator of the present invention belongs to an important component of brake energy recovering system,
It has there are three types of exemplary operation state, and the switching of different working condition is controlled by brake energy recovering system, brake pedal row
Journey simulator itself does not have mode switch function.Since the present invention is not related to the other component of brake energy recovering system,
Therefore a complete Brake energy recovery process can not be described, only to three kinds of exemplary operation states of brake pedal travel simulator
And the function having under the working condition is introduced.
A kind of three kinds of exemplary operation states of brake pedal travel simulator of the present invention are：
1. lead screw mandril 18 is in home position
When lead screw mandril 18 is in home position, i.e. the slide bar left end of lead screw mandril 18 is in contact with spring washer 10,
Simulator driving mechanism does not work, and only simulator executing agency works, and brake pedal travel simulator can simulate traditional system at this time
The pedal sense of dynamic system.When brake-pipe pressure increases, brake fluid is flowed into from into oil outlet K2, and pressure acts on the first work
On plug 16.When acting on pretightning force of the power on first piston 16 equal to the first bullet piston spring 13, first piston spring 13
Start to compress, this is the simulation process of first segment pedal sense.It is equal to second piston bullet when acting on the power on first piston 16
When the pretightning force of spring 20, second piston spring 20 starts to compress, this is second segment pedal sense simulation process.Two sections of pedal simulations
Process be combined together, the pedal sense close to true brake pedal can be simulated.Second piston spring 20 and first
When piston spring 13 compresses, the air in simulator cylinder body 15 is discharged by venthole K1, so that second piston 12 and first is lived
Plug 16 can be with free movement.When loine pressure is withdrawn from, second piston spring 20 and 13 return of first piston spring, brake fluid from
Pipeline is flowed back into oil outlet K2.
2. lead screw mandril 18 moves right
When wheel cylinder has boost demand, a kind of brake pedal travel simulator can assist brake energy recovering system to produce
Raw pressure source, meets the requirement of system boost rate.Its course of work is as follows：Electric machine controller 1 send out control instruction make it is electronic
Machine 2 rotates in the forward direction, and the output shaft of motor 2 drives sun gear 5 to rotate by flat key 4, and sun gear 5 is engaged by gear and drives row
Star gear 26 does planetary motion in gear ring 27, and planetary gear 26 drives planet carrier 23 to rotate again.In planet carrier 23
There are internal raceways in heart through-hole, the ball 9 in internal raceways can drive lead screw mandril 18 to move right.Lead screw mandril 18 is because of slide bar
Part is constrained by the centre bore on partition board 6, can not be rotated, can only be moved along a straight line.Lead screw mandril 18 move to
When first piston spring base 14 is in contact, first piston 16 starts to move right, and pressurization starts.As lead screw mandril 18 is held
Continuous to push first piston spring base 14, pressurization persistently carries out.
3. lead screw mandril 18 moves downward
Electric machine controller 1, which sends out control instruction, makes motor 2 reversely rotate, and the output shaft of motor 2 is driven by flat key 4
Sun gear 5 rotates, and sun gear 5 is engaged by gear drives planetary gear 26 to do planetary motion, planetary gear 26 in gear ring 27
Planet carrier 23 is driven to rotate again.There are internal raceways in the central through hole of planet carrier 23, the ball 9 in internal raceways can band
Dynamic lead screw mandril 18 moves downward.Under the working condition, a kind of brake pedal travel simulator can assist Brake energy recovery system
System is depressurized, while every time after end of braking, lead screw mandril 18, which moves downward, can make lead screw mandril 18 return to initial position.
Claims (9)
1. a kind of brake pedal travel simulator, which is characterized in that the brake pedal travel simulator includes that simulator drives
Motivation structure and simulator executing agency two parts；
The simulator driving mechanism includes electric machine controller (1), motor (2), first bearing (3), flat key (4), the sun
Take turns (5), partition board (6), second bearing (8), lead screw mandril (18), planetary gear shaft spacing ring (22), planet carrier (23), planet tooth
Wheel shaft (24), planetary gear bearing (25), planetary gear (26), gear ring (27), rear cover (28)；
The simulator executing agency includes simulator cylinder body (15)；
The electric machine controller (1) is bolted at the left end circular hole of rear cover (28), and motor (2) is mounted on motor
On controller (1) right side, motor (2) is connect with electric machine controller (1) output end electric wire, and first bearing (3) is sleeved on electricity
On the output shaft of motivation (2), motor (2) is connected by flat key (4) and sun gear (5) transition, and gear ring (27) is fixed on
In the major diameter round hole of rear cover (28), the inner ring of gear ring (27) is engaged with planetary gear (26), planetary gear (26) and planet tooth
Wheel bearing (25) is sleeved on successively in planetary gear shaft (24), and planetary gear (26) engages connection, planet carrier with sun gear (5)
(23) it is sleeved in planetary gear shaft (24), it is recessed that planetary gear shaft spacing ring (22) is mounted on planetary gear shaft (24) right end circle
In slot, left section of lead screw mandril (18) is packed into the central through hole of planet carrier (23) to roll connection, partition board (6) and rear cover (28) riveting
Nail connection, lead screw mandril (18) pass through the central through hole of partition board (6), second bearing (8) to be sleeved on the cylinder of planet carrier (23)
Right end is contacted with the left end of partition board (6) on boss, and simulator cylinder body (15) is to be bolted with partition board (6).
2. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the planet carrier (23) is positive three
Prism class formation part is provided with cylindrical boss at triangle center, and the boss center of circle is overlapped with triangle center, the boss center of circle
Place is machined with central through hole, the raceway of installation ball (9) is provided on the inner cylinder face of central through hole, on the outside of cylindrical boss
There are three slotted hole, three vertex of planet carrier (23) also to process there are three the identical circular through hole of diameter for processing, and circle is logical
The round heart of distribution in hole is overlapped with triangle center, and three apex angles of planet carrier also do rounded corner processing.
3. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the sun gear (5), planet tooth
Wheel (26), gear ring (27) are all made of straight spur gear, and wherein sun gear (5) is machined with the centre bore with flat key keyway, planet
Two sections of stepped holes are machined on the central axes of gear (26).
4. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the planetary gear shaft (24) is
Three sections of multi-diameter shafts, from left to right the diameter of axle be gradually reduced, be wherein machined in right end small diameter shaft for install planetary gear shaft limit
The circular groove of position ring (22).
5. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the lead screw mandril (18) is by two
Duan Zucheng, left section is central through hole and the matched lead screw for being provided with spiral rolling track of ball (9) with planet carrier (23), right section
For the cylindrical slide bar that surface is smooth.
6. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the simulator executing agency is also
Including rubber block (11), second piston (12), first piston spring (13), first piston spring base (14), first piston (16),
First piston sealing ring (17), second piston sealing ring (18), second piston spring (20)；
The first piston sealing ring (17), second piston sealing ring (19) are respectively fitted over first piston (16), second piston
(12) in annular groove, first piston (16) is with second piston (12) in succession mounted on the interstitial hole of simulator cylinder body (15) and a left side
In side opening, to be slidably connected, first piston spring base (14) is welded at the center of first piston (16), first piston spring
(13) it is respectively arranged in the left end shaft of first piston spring base (14) and second piston (12) with second piston spring (20), the
The left side of one piston spring (13) is in contact with the right side of second piston (12), the right side of first piston spring (13) with
The left side of first piston (16) is in contact, and the left side of second piston spring (20) is in contact with the right side of partition board (6), the
The right side of two piston springs (20) is in contact with the left side of second piston (12) major diameter axis, the right side of rubber block (11)
It is connect by heat adhesive with the left side of second piston (12), rubber block (11), second piston (12), first piston spring base
(14), the rotation conllinear of simulator cylinder body (15), first piston (16).
7. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the simulator cylinder body (15) is
Cylindrical parts structural member, left end right end are open, and the ring flange for installation, method are provided on the external cylindrical surface of left end nozzle
It is uniformly distributed there are four bolt hole on blue disk, it is machined with the stepped hole of three-stage cylinder along the central axes of simulator cylinder body (15), three
The diameter of segmentation stepped hole from left to right successively decreases successively, wherein right ports K2 be simulator cylinder body (15) into oil outlet, and add
Work is also machined with venthole K1 at internal thread hole, the cylindrical wall of left hole, and three-stage cylindrical stepped holes are connected with each other logical and return
Shaft axis is conllinear.
8. brake pedal travel simulator according to claim 6, which is characterized in that the second piston (12) is two
Segmentation multi-diameter shaft, the right end diameter of axle is larger, and the annular groove for placing sealing ring, the left end diameter of axle are machined on the cylindrical surface of right end axis
It is smaller, for installing second piston spring (20), it is machined with circular through hole along multi-diameter shaft centre of gyration line, through-hole diameter is slightly larger than
The slide bar diameter of lead screw mandril (18)；
The first piston (16) is cylindrical structure part, is machined on the cylindrical surface on first piston (16) periphery for placing
The annular groove of sealing ring.
9. brake pedal travel simulator described in accordance with the claim 1, which is characterized in that the electric machine controller (1), electricity
Output shaft, first bearing (3), sun gear (5), partition board (6), second bearing (8), lead screw mandril (18), the planet carrier of motivation (2)
(23), the rotation conllinear of gear ring (27), rear cover (28), simulator cylinder body (15), planetary gear shaft (24), planetary gear shaft
Hold (25), axis of rotation and the electric machine controller (1) of planetary gear (26), the output shaft of motor (2), first bearing (3), too
Sun wheel (5), partition board (6), second bearing (8), lead screw mandril (18), planet carrier (23), gear ring (27), rear cover (28), simulator
The axis of rotation of cylinder body (15) is parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507745.5A CN108501913A (en) | 2018-05-24 | 2018-05-24 | A kind of brake pedal travel simulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507745.5A CN108501913A (en) | 2018-05-24 | 2018-05-24 | A kind of brake pedal travel simulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108501913A true CN108501913A (en) | 2018-09-07 |
Family
ID=63401331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810507745.5A Pending CN108501913A (en) | 2018-05-24 | 2018-05-24 | A kind of brake pedal travel simulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108501913A (en) |
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| CN112406829A (en) * | 2020-12-10 | 2021-02-26 | 吉林大学 | Active brake pedal stroke simulator and control method thereof |
| CN112406836A (en) * | 2020-12-10 | 2021-02-26 | 吉林大学 | Brake-by-wire system with backup function and control method thereof |
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