CN107215326B - A kind of braking system of electric vehicle - Google Patents
A kind of braking system of electric vehicle Download PDFInfo
- Publication number
- CN107215326B CN107215326B CN201710289676.0A CN201710289676A CN107215326B CN 107215326 B CN107215326 B CN 107215326B CN 201710289676 A CN201710289676 A CN 201710289676A CN 107215326 B CN107215326 B CN 107215326B
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- Prior art keywords
- clutch
- gear
- wireline reel
- brake
- driving
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/58—Combined or convertible systems
- B60T13/588—Combined or convertible systems both fluid and mechanical assistance or drive
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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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
Abstract
The invention discloses a kind of braking systems of electric vehicle, including gas pedal, brake pedal, brake cylinder, driving motor and braking energy storage equipment, braking energy storage equipment includes the wind spring between wireline reel, winding outer gear ring, wireline reel and winding outer gear ring, wireline reel is connected by disengaging type linear transmission with the piston rod of brake cylinder, when gas pedal movement, driving motor drives vehicle driving by differential mechanism；When brake pedal movement, wind spring drives wireline reel rotation, and drives the piston rod of brake cylinder mobile by disengaging type linear transmission, realizes the braking of vehicle, and wheel then passes through the winding outer gear ring rotation of disengaging type one-way driving mechanism towing astern, and wind spring takes up accumulation of energy；When brake pedal unclamps, main automatically controlled lock device locking wireline reel, pawl locking winds outer gear ring.The present invention is suitble to implement on pure electric automobile, and reduces the power consumption of braking system with can dramatically, and is advantageously implemented the intelligent brake of vehicle.
Description
Technical field
The present invention relates to the braking systems of automobile, more particularly, to a kind of braking system suitable for pure electric vehicle.
Background technique
The vacuum servo that existing brake system of car generally includes a brake pedal, is connected with brake pedal
Device, vacuum booster is connected by pipeline with the air inlet pipe of engine, so that vacuum can be formed by making the side of vacuum booster, according to
Draught head by vacuum booster two sides, amplifies the driving force of brake pedal, and then brake cylinder is made to export high-pressure brake oil, into
And the caliper movement of hydraulic driving system, to realize the braking of vehicle.Currently, pure electric automobile has been increasingly entering
Average family, since pure electric automobile does not have engine, it is usually to add a vacuum pump, to make vacuum booster
Generate a vacuum chamber.But the consumption of noise and electric energy of the vacuum pump when on the one hand will increase vehicle driving, on the other hand,
Using the braking system of vacuum booster due to needing the mechanical action with a brake pedal, therefore, it is difficult to realize vehicle
Intelligent brake.
One kind disclosed " deceleration of Intelligent collision prevention system of automobile and brake actuator " in Chinese patent literature, it is public
Announcement number is CN204978616U, including original brake system of car, further includes secondary brake system, secondary brake system includes
Stepper motor, cam, piston rod and the pipeline for the hydraulic oil that circulates, the stepper motor are fixedly connected with cam, cam with
Piston rod is connected, and above-mentioned stepper motor, cam and piston rod collectively form an overall mechanism, and overall mechanism analog foot is stepped on
The movement of pedal, so that controlling secondary brake system completes the movement slowed down or braked.The invention is sentenced according to central processing unit
It is disconnected, make in time and reliably it is corresponding execute movement, so as to the generation effectively to avoid traffic accident, be conducive to automobile intelligent
Anti-collision system is popularized.However, the invention still has following problem: need to be arranged two braking systems being mutually juxtaposed, two
A braking system still uses the structure and technology of existing brake system of car, when the state of sensor perception vehicle, leads to
It crosses stepper motor, cam, piston rod etc. and makes drive simulating people's foot and touch on the brake the movement of pedal, to realize intelligent brake.In this way,
On the one hand so that whole structure is become extremely complex, increase the outer dimension of braking system significantly, while being unfavorable in pure electricity
Implement on electrical automobile.
Summary of the invention
The purpose of the present invention is to solve structure is complicated present in existing brake system of car, is not suitable for pure electric vehicle
The problem of realizing intelligent brake, is implemented and be unfavorable for automobile, provides a kind of braking system of electric vehicle, overall structure letter
It is single, it is suitble to implement on pure electric automobile, and reduce the power consumption of braking system with can dramatically, and be advantageously implemented vehicle
Intelligent brake.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of braking system of electric vehicle, including gas pedal, brake pedal, the brake oil to drive caliper to act
Cylinder, the driving motor to drive vehicle driving, the differential mechanism being connected with driving motor further include a braking accumulation of energy dress
Set, the braking energy storage equipment include wireline reel, the winding outer gear ring being set in outside wireline reel, it is associated with brake pedal to
The automatically controlled lock device of the master of locking wireline reel, the pawl that winding outer gear ring rotation direction can be limited, in wireline reel and winding outer gear ring
Between be equipped with wind spring, the inner end of wind spring is connected on wireline reel, and the outer end of wind spring is connected in winding outer gear ring, and wireline reel passes through
Disengaging type linear transmission is connected with the piston rod of brake cylinder, and disengaging type linear transmission includes one and steps on brake
The associated first clutch of plate is equipped with main clutch associated with gas pedal, institute between driving motor and differential mechanism
It states and is equipped with disengaging type one-way driving mechanism between differential mechanism and winding outer gear ring, disengaging type one-way driving mechanism includes one and brake
The associated second clutch of vehicle pedal, when gas pedal movement, main clutch engagement, driving motor is driven by differential mechanism
Vehicle driving, leads automatically controlled lock device locking wireline reel at this time, and the first, second clutch is in disengaged condition；When brake pedal is dynamic
When making, the first, second clutch is in engagement state, main automatically controlled lock device release, and wind spring drives wireline reel rotation, and wireline reel is logical
The piston rod for crossing disengaging type linear transmission driving brake cylinder is mobile, so that the brake fluid for exporting high pressure keeps caliper dynamic
Make, realize the braking of vehicle, at the same time, wheel winds outer gear ring by differential mechanism, disengaging type one-way driving mechanism towing astern and turns
It is dynamic, so that wind spring be made to take up the accumulation of energy on wireline reel；When brake pedal unclamps, the first, second clutch restores to disengagement shape
State, main automatically controlled lock device locking wireline reel, pawl prevents winding outer gear ring revolution, so that wind spring be made to keep energy accumulating state.
The present invention has abandoned the vacuum booster of existing braking system, using a wind spring as energy-accumulating element.In this way, working as
When normal vehicle operation, driver steps on the throttle pedal, main clutch engagement, and driving motor passes through differential mechanism driving vehicle row
It sails, and the first, second clutch can be effectively isolated driving motor and braking energy storage equipment, both when avoiding normal vehicle operation
Between occur interfering with each other phenomenon；When needing to brake, driver steps on brake pedal, associated with brake pedal first,
Second clutch all engages, and main automatically controlled lock device release, gas pedal is failure to actuate at this time, and the power of driving motor is by main clutch
Device is separated without passing to differential mechanism.Wind spring then discharges and wireline reel is driven to rotate, to be filled by disengaging type Linear transmission
Set the linear motion for converting the revolving speed of wireline reel in brake cylinder piston rod, brake cylinder, that is, exportable high pressure brake fluid,
The braking of vehicle is realized in caliper movement at this time.At the same time, the wheel towing astern differential mechanism rotation of braking, and then pass through disengaging type
One-way driving mechanism towing astern winds outer gear ring rotation, so that wind spring is wound accumulation of energy, that is to say, that the braking energy of vehicle is inhaled by wind spring
It receives and utilizes, so that wind spring is stored energy again while releasing energy in a braking process, on the one hand can effectively utilize vehicle
Braking energy, while the braking effect of vehicle can be improved；When brake pedal unclamps, the first, second clutch is cut again
Disengaged condition, main automatically controlled lock device locking wireline reel are shifted to, pawl then prevents winding outer gear ring revolution, so that wind spring be made to keep storing
Energy state, disengaging type linear transmission at this time make the piston rod of brake cylinder and wireline reel be in disengaged condition, therefore, system
Moving in-oil cylinder reset spring can drive piston rod to retreat reset, to carry out braking next time.It can be understood that working as me
Corresponding sensor is set on vehicle after, the driving conditions such as the speed of vehicle, the distance of front and back barrier, vehicle can be perceived
Controller can control the movement of the first, second clutch, main automatically controlled lock device etc. according to the signal of sensor, thus convenient
The intelligent brake of ground realization vehicle.That is, the artificial system of vehicle can be realized using a set of braking energy storage equipment by the present invention
Dynamic and intelligent brake simplifies structure with can dramatically, energy consumption is reduced, convenient for implementing on pure electric vehicle.
Preferably, the disengaging type linear transmission include fixed rack, be slidably connected in fixed rack from
The driving gear that carry-over bar, empty set engage on wireline reel with driven rack gear, the piston rod of the driven rack gear and brake cylinder
It is connected, the first clutch is the first synchronizer being arranged on wireline reel, when the first synchronizer is engaged with driving gear
When, driving gear forms a fixed connection with wireline reel；When the first synchronizer and driving gear disengage, driving gear and wireline reel
Form rotation connection.
The transmission mechanism being made of driving gear and driven rack gear is simple and reliable, and synchronizer is the existing dress in speed changer
It sets, is easy to implement electric control clutch, to be advantageously implemented intelligent brake.
Preferably, the automatically controlled lock device of master includes locking electromagnet, the spreadet spreadet wheel that is arranged on wireline reel, it is described
Locking electromagnet is equipped with the locking tooth engaged with spreadet spreadet wheel.
Locking tooth can make spreadet spreadet wheel secure ratcs, and reduce with can dramatically and want to the driving force of locking electromagnet
It asks, is easy to implement automatically controlled, be advantageously implemented intelligent brake
Preferably, the disengaging type one-way driving mechanism includes the main transmission being arranged between main clutch and differential mechanism
The clutch gear of towing astern gear, clutch tooth wheel shaft, empty set on clutch tooth wheel shaft on axis, clutch gear are mutually nibbled with towing astern gear
Close, the second clutch is the second synchronizer being arranged on clutch tooth wheel shaft, on the end face of towing astern gear integrally provided with
The inner sidewall of the locking axle sleeve being set on main shaft, locking axle sleeve is in regular hexagonal prism shape, thus in locking axle sleeve and main biography
Being formed on the outside of one between moving axis is regular hexagon, inside is circular rotation cavity, and rotatable turn is equipped in rotation cavity
Dynamic annulus is rotated and is set on annulus there are six in the equally distributed radially through groove of circumferencial direction, and radially through groove is interior equipped with moveable
Rub cylinder, is bonded on the inside of friction cylinder with main shaft, the inner sidewall fitting corresponding with locking axle sleeve of friction cylindrical outer side, lock
Only axle sleeve is equipped with rotatable telescopic control-rod, and the outer circumference surface for rotating annulus is equipped with positioning groove, telescopic control
The inner end detent of bar is in positioning groove, when the second synchronizer is engaged with clutch gear, clutch gear and clutch tooth wheel shaft shape
At being fixedly connected；When the second synchronizer and clutch gear disengage, clutch gear and clutch tooth wheel shaft are formed and are rotatablely connected.
Since the inner sidewall of locking axle sleeve is in regular hexagonal prism shape, six equally distributed friction side walls, locking are formed
The radial clearance of the rotation cavity formed between axle sleeve and main shaft is from the edges and corners of friction side wall to the midpoint of friction side wall
Position gradually reduces.In this way, the friction cylinder in rotation annulus will be unable to towards the lesser side of radial clearance in rotation cavity
It is mobile, to realize the unidirectional delivery of torque.In this way, vehicle is when moving backward braking, counter-rotational differential mechanism is unable to drive volume
It is rotated backward around outer gear ring, so that it is guaranteed that effective work of energy storage equipment, and the second synchronizer is easy to implement electric control clutch, favorably
In realization intelligent brake.
Preferably, the brake pedal is equipped with position sensor, the driven rack gear is located at the back in fixed rack
Face is equipped with the limit elongated slot axially extended, is equipped with several limits being arranged side by side along axial direction at corresponding limit elongated slot on fixed rack
Position hole, limit hole includes intermediate biggish accommodating hole and the lesser pilot hole in both ends, to make limit hole in stepped hole shape, limit
Spacer pin is equipped in the hole of position, the centre of spacer pin is equipped with the stop collar that can be moved in accommodating hole, and the both ends of spacer pin are fitted respectively
In the pilot hole for fitting over limit hole both ends, it is arranged with reseting pressuring spring on the spacer pin in accommodating hole, on the fixed rack
Equipped with control-rod associated with stepper motor, the end of control-rod is equipped with guiding surface, and when brake pedal movement, position is passed
Sensor exports the position signal of brake pedal, and stepper motor makes control-rod move forward corresponding distance, by the guiding of control-rod
The spacer pin that inclined-plane squeezes is moving inwardly into limit elongated slot, so as to limit the shift motion of driven rack gear.
Controller can judge the driving status of vehicle according to the signal of sensor, thus when controlling stepper motor control-rod to
The suitable distance of preceding movement, to squeeze suitable spacer pin quantity, and then correspondingly limits the stroke of driven rack gear, with control
The movement of brake cylinder and caliper efficiently controls brake process.
Therefore, it is simple that the invention has the following beneficial effects: overall structures, is suitble to implement on pure electric automobile, and
It reduces the power consumption of braking system with can dramatically, and is advantageously implemented the intelligent brake of vehicle.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention.
Fig. 2 is the stroke limit structural schematic diagram of driven rack gear.
Fig. 3 is the connection structure axial sectional view of main shaft Yu towing astern gear.
Fig. 4 is the connection structure transverse direction partial sectional view of main shaft Yu towing astern gear.
In figure: 1, driving motor 2, main clutch 3, brake cylinder 4, differential mechanism 50, wireline reel 501, spreadet spreadet wheel
51, outer gear ring 53, wind spring 60, fixed pulley 601, limit hole 61, driven rack gear 611, limit elongated slot 62, active are wound
Gear 63, the first synchronizer 64, spacer pin 641, stop collar 65, reseting pressuring spring 66, control-rod 661, guiding surface 7,
Locking electromagnet 71, locking tooth 80, towing astern gear 81, clutch tooth wheel shaft 82, clutch gear 83, transition gear 84,
Two synchronizers 85, friction side wall 852, articulated shaft 86, rotation annulus 861, radially through groove 862, are determined locking axle sleeve 851
Position groove 87, friction cylinder 9, telescopic control-rod 91, fixed link 92, telescopic 93, pressure spring.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of braking system of electric vehicle, including gas pedal and brake pedal (do not show in figure
Out), the brake cylinder 3 to drive caliper to act, the driving motor 1 to drive vehicle driving, be connected with driving motor
The differential mechanism 4 connect and a braking energy storage equipment are arranged associated with gas pedal between driving motor and differential mechanism
Main clutch 2, the throttle movement of gas pedal analog gasoline car therein, and connect based on the axis of main clutch and differential mechanism
Transmission shaft 21.Certainly, retarder can also be arranged in we between main clutch and differential mechanism, so as to simplify the speed control of vehicle
System, convenient for making full use of existing gasoline car technology.
Braking energy storage equipment of the invention include wireline reel 50, the winding outer gear ring 51 being set in outside wireline reel, master it is automatically controlled
Lock device, the pawl (not shown) that can limit winding outer gear ring rotation direction are set between wireline reel and winding outer gear ring
There is wind spring 53, the inner end of wind spring is connected on wireline reel, and the outer end of wind spring is connected in winding outer gear ring.When wireline reel forward direction turns
When dynamic or winding outer gear ring rotates backward, wind spring is tightly wound around on wireline reel and accumulation of energy.Wireline reel passes through disengaging type straight line
Transmission device is connected with the piston rod of brake cylinder, and disengaging type linear transmission includes one related to brake pedal
The first clutch of connection, to make wireline reel selectively brake cylinder be driven to act.And between differential mechanism and winding outer gear ring
Disengaging type one-way driving mechanism is then set, and disengaging type one-way driving mechanism includes one associated with brake pedal second
Clutch, so that when the vehicle is braked, wheel can wind outer gear ring by the reversed towing astern of differential mechanism and rotate backward.Main automatically controlled locking
Device is associated with brake pedal, so as to selectively locking wireline reel.
Specifically, disengaging type linear transmission include fixed rack 60, the driven tooth that is slidably connected in fixed rack
The piston rod of the driving gear 62 that item 61, empty set engage on wireline reel with driven rack gear, driven rack gear and brake cylinder passes through
Shaft coupling is connected.In addition, first synchronizer 63 is arranged on wireline reel, when the first synchronizer is engaged with driving gear
When, driving gear forms a fixed connection with wireline reel；When the first synchronizer and driving gear disengage, driving gear and wireline reel
Rotation connection is formed, so that the first synchronizer be made to constitute the first clutch in disengaging type linear transmission.
In addition, main automatically controlled lock device includes locking electromagnet 7, the spreadet spreadet wheel being arranged on wireline reel 501, locking electromagnetism
The locking tooth 71 engaged with spreadet spreadet wheel is set on iron to make spreadet spreadet wheel enter lockup state, avoids the rotation of wireline reel.
When locking electromagnet energized action, locking tooth can be driven and move back the locking released to spreadet spreadet wheel.
Further, disengaging type one-way driving mechanism includes the 80, clutches of towing astern gear being arranged on main shaft
Gear shaft 81, empty set in the clutch gear 82 on clutch tooth wheel shaft, the transition gear 83 that is fixed on clutch tooth wheel shaft, from
It closes gear to engage with towing astern gear, transition gear is engaged with winding outer gear ring.In addition, also needing setting one on clutch tooth wheel shaft
Second synchronizer 84, when the second synchronizer is engaged with clutch gear, clutch gear forms a fixed connection with clutch tooth wheel shaft, this
When differential mechanism can impart power to winding outer gear ring；When the second synchronizer and clutch gear disengage, clutch gear and clutch
Gear shaft forms rotation connection, and differential mechanism can not impart power to winding outer gear ring at this time, so that the second synchronizer be made to constitute
Second clutch in disengaging type one-way driving mechanism.In addition, as shown in Figure 3, Figure 4, integrally being set on the end face of towing astern gear
The locking axle sleeve 85 being set on main shaft is set, the inner sidewall of locking axle sleeve is in regular hexagonal prism shape, therefore, forms six uniformly
The friction side wall 851 of distribution forms one 120 degree of corner angle between two adjacent friction side walls.The inner sidewall of locking axle sleeve
Form a rotation cavity between main shaft, the cross section of the rotation cavity be in outer side edges be regular hexagon, inner side edge is
Circular ring-type.Therefore, the radial clearance for rotating cavity is maximum in the edges and corners of friction side wall, in the midpoint of friction side wall
It is minimum.Setting one rotatable rotation annulus 86 in cavity is rotated, setting six on annulus is rotated and uniformly divides in circumferencial direction
The radially through groove 861 of cloth, the moveable friction cylinder 87 of the interior setting of radially through groove.Locking shaft, which is put on, also needs the logical of setting radial direction
Slot, is arranged an articulated shaft 852, articulated telescopic formula control-rod 9 on articulated shaft in through slot, which includes hinged
Pressure spring 93 is arranged in telescopic in fixed link 91 on articulated shaft, the telescopic 92 being socketed in fixed link, and pressure spring one end compresses
Fixed link, the other end compress telescopic bottom, thus make telescopic control-rod length can elastic telescopic, and can be in through slot
It is rotated around articulated shaft.Determine in addition, being located on the outer circumference surface of rotation annulus and being arranged one between two neighboring radially through groove
Position groove 862, the end detent of telescopic is in positioning groove on telescopic control-rod, to generate a torsion to rotation annulus
Square, the friction cylinder rotated in annulus is i.e. mobile towards the lesser side of radial clearance in rotation cavity, makes on the inside of friction cylinder
It is bonded with main shaft, the friction side wall fitting corresponding with locking axle sleeve of friction cylindrical outer side.When main shaft rotates backward,
Friction cylinder and rotation annulus is driven to rotate backward together by frictional force, radial clearance of the friction cylinder towards rotation cavity
Maximum is mobile.That is, the radial clearance of rotation cavity corresponding to cylinder that rubs at this time is greater than the outer diameter of friction cylinder
And there is opposite sliding, main shaft can not deliver torque to clutch gear.When main shaft rotates forward, pass through friction
Power makes the trend moved at the cylindrical radial clearance minimum at towards rotation cavity of friction.That is, the cylinder that rubs at this time
The radial clearance of corresponding rotation cavity is less than the outer diameter of friction cylinder and is formed self-locking, and main shaft can deliver torque to
Clutch gear.
The present invention has abandoned the vacuum booster of existing braking system, using a wind spring as energy-accumulating element, to drive
The movement of dynamic brake cylinder.When a vehicle is started, driver steps on the throttle pedal, and main clutch associated with gas pedal connects
It closes, driving motor drives vehicle driving by differential mechanism.At this point, the first, second clutch associated with brake pedal is in
Disengaged condition, so as to which driving motor and braking energy storage equipment to be effectively isolated, when avoiding normal vehicle operation between the two
Appearance interferes with each other phenomenon.Main automatically controlled lock device then by wireline reel locking, be failure to actuate by brake cylinder；When needing to brake, drive
People steps on brake pedal, and the first, second clutch associated with brake pedal all engages, main automatically controlled lock device release, this
When gas pedal be failure to actuate, the power of driving motor is separated by main clutch without passing to differential mechanism.Wind spring then discharge and
Wireline reel rotation is driven, the driving gear on wireline reel drives driven rack gear mobile, and then drives the piston rod of brake cylinder
The braking of vehicle is realized in brake fluid that is mobile and exporting high pressure, at this time caliper movement.
At the same time, the wheel towing astern differential mechanism rotation slowed down by braking, to make the towing astern gear on main shaft
Rotation, and clutch gear is driven to rotate together with clutch tooth wheel shaft, at this point, transition gear drives winding outer gear ring rotation, make to roll up
Spring winds accumulation of energy.That is, wind spring is wound by wheel towing astern while driving brake cylinder movement by wireline reel again
Accumulation of energy, in order to brake next time；When brake pedal unclamps, the first, second clutch back switches to disengagement shape
State, main automatically controlled lock device locking wireline reel, pawl then prevents winding outer gear ring revolution, so that wind spring is made to keep energy accumulating state, this
When brake cylinder in reset spring piston rod can be driven to retreat reset, to carry out braking next time, and and brake cylinder
The connected driven rack gear of piston rod then driving gear is driven to dally on wireline reel.It should be noted that we can be in vehicle
The upper corresponding sensor of setting, to perceive the driving conditions such as the speed of vehicle, the distance of front and back barrier, vehicle control device
The movement that the first, second clutch, main automatically controlled lock device etc. are controlled according to the signal of sensor, to conveniently realize vehicle
Intelligent brake.
Finally, we, which can also be located at the back side in fixed rack in driven rack gear, is arranged the limit elongated slot axially extended
611, several limit holes 601 being arranged side by side along axial direction are set on fixed rack at corresponding limit elongated slot, and limit hole includes centre
The lesser pilot hole of biggish accommodating hole and both ends, to make limit hole in stepped hole shape.Spacer pin 64 is set in limit hole,
The stop collar 641 that the intermediate setting of spacer pin can move in accommodating hole, the both ends of spacer pin fit in limit hole both ends respectively
Pilot hole in, be arranged the reseting pressuring spring 65 for compressing stop collar on the spacer pin in accommodating hole, reseting pressuring spring driving
Spacer pin is mobile away from driven rack gear side.That is, the inner end of spacer pin is separated with limit elongated slot at this time, and limit
The outer end of pin exposes to outside limit hole.In addition, moveable control-rod 66 is arranged far from the outside of driven rack gear in fixed rack, it should
Control-rod is associated with a stepper motor by corresponding transmission mechanism, and leading towards spacer pin side is arranged in the end of control-rod
To inclined-plane 661, to make stepper motor that can move axially by transmission mechanism drive control bar.Certainly, we also need stopping
Corresponding position sensor is set on vehicle pedal, to export corresponding brake pedal position signal to controller.
When needing to brake, driver steps on brake pedal, and position sensor exports corresponding brake pedal to controller
Position signal, controller controls stepper motor and rotates corresponding angle, so that control-rod is made to move forward a certain distance, this
When control boom end guiding surface squeeze the outer end of the spacer pin of front several, the spacer pin being extruded is moving inwardly into limit
In elongated slot.At the same time, wind spring drives wireline reel rotation, and the driving gear on wireline reel drives driven rack gear mobile, driven
Rack gear behind limits elongated slot by the blocking of spacer pin and moves a distance corresponding with the displacement of brake pedal, in turn
It drives the piston rod of brake cylinder mobile and exports the brake fluid of high pressure, the braking of vehicle is realized in caliper movement at this time.Also
It is to say, when the moving distance difference of control-rod, the number for the spacer pin that control-rod is squeezed is also different, correspondingly, driven tooth
The mobile distance of item institute is also different.By controlling the moving distance of driven rack gear, the movement of brake cylinder can be efficiently controlled
Amplitude, to accurately control the brake force of caliper.
Claims (4)
1. a kind of braking system of electric vehicle, including gas pedal, brake pedal, the brake oil to drive caliper to act
Cylinder, the driving motor to drive vehicle driving, the differential mechanism being connected with driving motor, characterized in that further include a system
Dynamic energy storage equipment, the braking energy storage equipment include wireline reel, the winding outer gear ring being set in outside wireline reel, with brake pedal phase
The pawl for being associated with the automatically controlled lock device of master to locking wireline reel, winding outer gear ring rotation direction being limited, in wireline reel and volume
Wind spring is equipped between outer gear ring, the inner end of wind spring is connected on wireline reel, and the outer end of wind spring is connected in winding outer gear ring, volume
It is connected by disengaging type linear transmission with the piston rod of brake cylinder around axis, disengaging type linear transmission includes one
First clutch associated with brake pedal, between driving motor and differential mechanism be equipped with master associated with gas pedal from
Clutch is equipped with disengaging type one-way driving mechanism between the differential mechanism and winding outer gear ring, and disengaging type one-way driving mechanism includes
One second clutch associated with brake pedal, when gas pedal movement, main clutch engagement, driving motor passes through difference
Fast device drives vehicle driving, leads automatically controlled lock device locking wireline reel at this time, the first, second clutch is in disengaged condition；Work as brake
When vehicle pedal acts, the first, second clutch is in engagement state, main automatically controlled lock device release, and wind spring drives wireline reel rotation,
Wireline reel drives the piston rod of brake cylinder mobile by disengaging type linear transmission, so that the brake fluid for exporting high pressure makes to make
Dynamic pincers movement, realizes the braking of vehicle, and at the same time, wheel is outer by differential mechanism, disengaging type one-way driving mechanism towing astern winding
Ring gear against rotation, so that wind spring be made to take up the accumulation of energy on wireline reel；When brake pedal unclamp when, the first, second clutch restore to
Disengaged condition, main automatically controlled lock device locking wireline reel, pawl prevents winding outer gear ring revolution, so that wind spring be made to keep accumulation of energy shape
State, the disengaging type linear transmission include that fixed rack, the driven rack gear being slidably connected in fixed rack, empty set are being rolled up
The driving gear engaged on axis with driven rack gear, the driven rack gear are connected with the piston rod of brake cylinder, and described first
Clutch is the first synchronizer being arranged on wireline reel, when the first synchronizer is engaged with driving gear, driving gear and volume
It forms a fixed connection around axis；When the first synchronizer and driving gear disengage, driving gear and wireline reel are formed and are rotatablely connected.
2. a kind of braking system of electric vehicle according to claim 1, characterized in that the automatically controlled lock device of master includes lock
Only electromagnet, the spreadet spreadet wheel being arranged on wireline reel, the locking electromagnet are equipped with the locking tooth engaged with spreadet spreadet wheel.
3. a kind of braking system of electric vehicle according to claim 1, characterized in that the disengaging type one-way driving mechanism
Including the towing astern gear, clutch tooth wheel shaft, empty set that are arranged on the main shaft between main clutch and differential mechanism in clutch tooth
Clutch gear on wheel shaft, clutch gear are meshed with towing astern gear, and the second clutch is to be arranged on clutch tooth wheel shaft
The second synchronizer, integrally provided with the locking axle sleeve being set on main shaft on the end face of towing astern gear, locking axle sleeve
Inner sidewall is in regular hexagonal prism shape, to be formed between locking axle sleeve and main shaft, an outside is regular hexagon, inside is
Circular rotation cavity, rotation cavity is interior to be equipped with rotatable rotation annulus, rotates equal in circumferencial direction there are six setting on annulus
The radially through groove of even distribution, radially through groove is interior to be equipped with moveable friction cylinder, and friction cylinder inside is bonded with main shaft, rubs
Cylindrical outer side inner sidewall fitting corresponding with locking axle sleeve is wiped, locking shaft, which is put on, is equipped with rotatable telescopic control-rod, rotation
The outer circumference surface of annulus is equipped with positioning groove, and the inner end detent of telescopic control-rod is in positioning groove, when the second synchronizer
When engaging with clutch gear, clutch gear forms a fixed connection with clutch tooth wheel shaft；When the second synchronizer and clutch gear disengage
When, clutch gear and clutch tooth wheel shaft are formed and are rotatablely connected.
4. a kind of braking system of electric vehicle according to claim 1, characterized in that the brake pedal is equipped with position
Sensor, the driven rack gear is located at the back side in fixed rack and is equipped with the limit elongated slot that axially extends, right on fixed rack
It should limit and be equipped with several limit holes being arranged side by side along axial direction at elongated slot, limit hole includes intermediate biggish accommodating hole and both ends
Lesser pilot hole, to make limit hole in stepped hole shape, limit hole is interior to be equipped with spacer pin, and the centre of spacer pin is equipped with and can hold
The stop collar moved in hole is set, the both ends of spacer pin are fitted in respectively in the pilot hole at limit hole both ends, in accommodating hole
Reseting pressuring spring is arranged on spacer pin, the fixed rack is equipped with control-rod associated with stepper motor, the end of control-rod
Portion is equipped with guiding surface, and when brake pedal movement, position sensor exports the position signal of brake pedal, and stepper motor makes to control
Bar processed moves forward corresponding distance, is moving inwardly into limit elongated slot by the spacer pin that the guiding surface of control-rod squeezes,
So as to limit the shift motion of driven rack gear.
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| CN201710289676.0A CN107215326B (en) | 2017-04-27 | 2017-04-27 | A kind of braking system of electric vehicle |
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| CN201710289676.0A CN107215326B (en) | 2017-04-27 | 2017-04-27 | A kind of braking system of electric vehicle |
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| CN107215326A CN107215326A (en) | 2017-09-29 |
| CN107215326B true CN107215326B (en) | 2019-05-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109017734B (en) * | 2018-07-19 | 2020-01-17 | 浙江零跑科技有限公司 | Gear type EPB (emergency braking system) failure parking device |
| CN113006595B (en) * | 2021-02-24 | 2022-10-04 | 池州市公路管理服务中心 | Security fence for highway maintenance |
| CN113734117B (en) * | 2021-11-08 | 2022-02-25 | 浙江万泉信息技术有限公司 | Semi-decoupling braking device for regenerative braking of new energy automobile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202225863U (en) * | 2011-08-26 | 2012-05-23 | 山东交通学院 | Power take-off type electronic brake |
| CN102602376A (en) * | 2012-03-27 | 2012-07-25 | 沈阳工业大学 | Energy-saving mechanism for storing and outputting energy in the same direction |
| CN103448696A (en) * | 2013-06-04 | 2013-12-18 | 浙江金刚汽车有限公司 | Vehicle auxiliary drive mechanism |
| CN103448544A (en) * | 2013-06-04 | 2013-12-18 | 浙江金刚汽车有限公司 | Vehicle auxiliary drive method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3616847B2 (en) * | 2001-12-25 | 2005-02-02 | 川崎重工業株式会社 | Regenerative braking system for land mobile |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202225863U (en) * | 2011-08-26 | 2012-05-23 | 山东交通学院 | Power take-off type electronic brake |
| CN102602376A (en) * | 2012-03-27 | 2012-07-25 | 沈阳工业大学 | Energy-saving mechanism for storing and outputting energy in the same direction |
| CN103448696A (en) * | 2013-06-04 | 2013-12-18 | 浙江金刚汽车有限公司 | Vehicle auxiliary drive mechanism |
| CN103448544A (en) * | 2013-06-04 | 2013-12-18 | 浙江金刚汽车有限公司 | Vehicle auxiliary drive method |
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