CN107117143B - A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism - Google Patents
A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism Download PDFInfo
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- CN107117143B CN107117143B CN201710224146.8A CN201710224146A CN107117143B CN 107117143 B CN107117143 B CN 107117143B CN 201710224146 A CN201710224146 A CN 201710224146A CN 107117143 B CN107117143 B CN 107117143B
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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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- Braking Elements And Transmission Devices (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of brake feel piezoelectric type adjustable damping brake treadle mechanisms, including mounting bracket, brake pedal, pedal sense simulator, piezoelectric element driving mechanism, inductive pick-up and pedal displacement sensor, pedal sense simulator includes the first pedal sense simulation mechanism, bindiny mechanism, the second pedal sense simulation mechanism and brake pushrod.The present invention is compared to the prior art, inductive pick-up for perceiving the braking intention of driver in advance, pedal displacement sensor is used to accurately identify the braking intention of driver, piezoelectric element driving mechanism adjusts braking operation characteristic curve by adjusting hydraulic oil flow area and flow damping, compact-sized reasonable, easy to operate quick, brake feel is adjustable, can effectively simulating brake feel, improve stability, the comfortableness and security of braking, and have the function of pre-identification braking intention and emergency brake.
Description
Technical field
The invention belongs to vehicle brake apparatus technical fields, and in particular to a kind of brake feel piezoelectric type adjustable damping braking
Pedal gear.
Background technique
Braking system is one of important component of automobile chassis, is directly related to comprehensive vehicle performance and lives and properties
Safety.Although conventional hydraulic formula, pneumatic brake system can satisfy the requirements of existing brake legislation, there is pipes
Complexity is arranged, by vacuum booster unit, braking response speed are relatively slow, braking moment actively can not be adjusted and be difficult to and other in road
The deficiencies of system integration controls place, is not suitable for the demand for development of the integrated control of automobile especially electric automobile chassis.
The electric controlled brake system reality decoupling of brake treadle mechanism and brake actuator, mainly there is electro-hydraulic brake
System (EHB) and two kinds of electromechanical braking system (EMB), eliminate straight between brake treadle mechanism and brake actuator
It connects in succession, using electric wire as information transmission media, electronic control unit identifies braking intention, control system according to relevant sensor signals
Dynamic executing agency's movement, realizes the control to each wheel braking force, fast with vacuum booster unit, dynamic response is not depended on
Speed is easily integrated the advantages that control, compensates for the deficiency on Conventional braking systems structural principle.
Since brake treadle mechanism and brake actuator realize decoupling, so that the brake pedal of electric controlled brake system is not
Traditional vacuum booster unit is depended on again, brake pedal structure and operator brake feeling etc. can all vary widely, because
This needs to carry out brand-new design to automobile decoupling distributed brake Braking system pedal gear.Currently, in the existing vapour that can be inquired
It is that Authorization Notice No. is with the maximally related technology of the present invention in vehicle brake system pedal gear relevant information
The patent of invention of CN101982356B --- automobile brake pedal mechanism and its pedal sense simulator and Authorization Notice No. are
A kind of utility model patent of CN201989768U --- brake pedal apparatus of automobile line control brake system.Foregoing invention uses
Pedal displacement sensor identifies the braking intention of driver, is hindered using magnetorheological fluid variable damp characteristics dynamic regulation brake pedal
Buddhist nun's power, improves brake pedal feel and automobile brake perfrmance.Foregoing invention uses piezoelectric type pedal pressing force sensor and pedal
Linear displacement transducer identifies the braking intention of driver jointly, and pedal sense analog functuion part uses dual spring mechanism,
When middle small intensity is braked, only outer lateral spring works；In high-intensitive or emergency braking, medial and lateral spring simultaneously participates in work
Make.But magnetorheological fluid formula pedal sense simulator and piezoelectric type pedal pressing force sensor in foregoing invention etc. in foregoing invention,
All there is the problems such as structure is complicated, controls cumbersome, higher cost and realizes difficulty, and does not both account for braking intention and know in advance
Other and emergency brake function.To so far, there is the brake feel piezoelectric type of braking intention pre-identification and emergency brake function
Adjustable damping brake treadle mechanism, which also rarely has, to be referred to.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of brake feel piezoelectric type adjustable damping brake pedal machines
Structure.
In order to achieve the above object, technical scheme is as follows:
The present invention provides a kind of brake feel piezoelectric type adjustable damping brake treadle mechanism, comprising:
Mounting bracket, including connected the first mounting portion and the second mounting portion, the second installation position is in the first mounting portion
Lower section；
Brake pedal, including pedal body and pedal shaft, the top of pedal shaft are rotatably dispose on the first mounting portion,
The bottom end that pedal body is set to pedal shaft is used to that pedal shaft to be driven to rotate around the tie point of itself and the first mounting portion；
Pedal sense simulator, including the first pedal sense simulation mechanism, bindiny mechanism, the second pedal sense simulation mechanism
And brake pushrod, the first pedal sense simulation mechanism are set on the second mounting portion, brake pushrod respectively with the first pedal sense
Simulation mechanism, pedal shaft are flexibly connected, and the second pedal sense simulation mechanism is set under the first pedal sense simulation mechanism
Side, bindiny mechanism are set between the first pedal sense simulation mechanism and the second pedal sense simulation mechanism and are connected between three
It is equipped with hydraulic oil in logical space, is equipped with emergency button in the first pedal sense simulation mechanism；
Piezoelectric element driving mechanism, movement are set in bindiny mechanism, adjust for adjusting the flow area of hydraulic oil
Save the characteristic curve of pedal sense simulator；
Inductive pick-up is set on pedal body, for perceiving the braking intention of driver in advance；
Pedal displacement sensor is set on the first mounting portion and connect with the top of pedal shaft, for accurately knowing
The braking intention of other driver.
Compared to the prior art, inductive pick-up for perceiving the braking intention of driver, pedal displacement in advance by the present invention
Sensor is used to accurately identify the braking intention of driver, and piezoelectric element driving mechanism is by adjusting hydraulic oil flow area and stream
Dynamic damping adjusts braking operation characteristic curve, compact-sized reasonable, and easy to operate quick, brake feel is adjustable, can effectively simulate
Brake feel improves stability, the comfortableness and security of braking, and has pre-identification braking intention and emergency brake function
Energy.
As a preferred option, the first above-mentioned pedal sense simulation mechanism include first shell, the first elastic parts and
Third elastic parts, the axial ends of first shell are respectively equipped with cover board of front end and rear-end plate, the sealing of the first elastic parts and
It is movably set in the axial cavity of first shell and is close proximity in cover board of front end in the initial state, third elastic parts is set
It is placed on rear-end plate；First elastic parts includes the first spring-leaf retainer, second spring seat ring, the first spring, sealing ring and answers
Hitch bar, the first spring-leaf retainer, second spring seat ring are axially set in turn in first shell by its front end along first shell to the back-end
In the axial cavity of body, the first spring is set on the first spring-leaf retainer and second spring seat ring, and sealing ring is sheathed on the second bullet
On spring abutment circle, emergency push rod is set on second spring seat ring, brake pushrod be movably set in first shell and with the first bullet
The connection of spring abutment circle.
Above-mentioned third elastic parts is elastic element, and elastic element is made by elastoplastic, and elastic element is circle
Rod structure, elastic element are set on rear-end plate, and emergency button is set to the center on rear-end plate and being located at elastic element
Position.
Above-mentioned bindiny mechanism includes the second shell being set to below first shell, the upper surface and lower end of second shell
The middle position in face is equipped with center hole, and center hole is connected with the axial cavity of first shell, third shell respectively, and second
The side through hole being connected with center hole is additionally provided on the side end face of shell.
The second above-mentioned pedal sense simulation mechanism includes third shell and the second elastic parts, the axial direction one of third shell
End is equipped with bottom head covers, and the axle center of third shell and the axle center of first shell are mutually perpendicular to, the sealing of the second elastic parts and movement
Ground is set in the axial cavity of third shell and has certain preload, first shell, second shell in the initial state
Hydraulic oil is filled in the space being connected between third shell；Second elastic parts includes second spring and first piston,
First piston is set in the axial cavity of third shell along the axial movement of third shell, and second spring is set to first piston
Between bottom head covers, the stiffness coefficient of the first spring is greater than the stiffness coefficient of second spring.
Using above-mentioned limited scheme, filled in the space that is connected between first shell, second shell and third shell
There is hydraulic oil, so that the first spring and second spring have certain preload in the initial state, and makes the first spring-leaf retainer
It is close proximity in cover board of front end.Middle small intensity braking when, mainly by second spring simulate in small intensity brake feel；Big strong
When degree braking, second spring has been compressed near the limit, and the brake feel of big intensity is mainly simulated by the first spring；Urgent
When braking, piezoelectric element driving mechanism reduces the flow area of hydraulic oil, to suitably increase brake pedal resistance, actively adjusts
Brake feel, the needs of when meeting emergency braking.When braking system when something goes wrong, brake pushrod is pushed to bottom, elastic element
Compressive deformation is larger, so that emergency button is closed, can start alternate brake function.
As a preferred option, above-mentioned piezoelectric element driving mechanism include the 4th shell, piezoelectric element, second piston,
Displacement amplifying mechanism adjusts push rod, pilot plunger and return spring, the axial ends of the 4th shell be equipped with the second cover board of front end and
Second rear-end plate, setting is for adjusting the movable through-hole of push rod in the second cover board of front end, by the second drive end bearing bracket in the 4th shell
Plate is disposed with first axis cavity, the second axial cavity and third axial cavity, piezoelectricity member to the second rear-end plate direction
Part is set in third axial cavity and is close proximity on the inside of the second rear-end plate, and second piston movement is set to third axial cavity
It is interior and connected with piezoelectric element, displacement amplifying mechanism be set in the second axial cavity and respectively with second piston, adjust
Push rod connection adjusts push rod and is set in first axis cavity and connect with pilot plunger, and pilot plunger is sealed and movably set
It is placed in side through hole, return spring, which is sheathed on, to be adjusted on push rod and make second piston be close proximity to piezoelectric element in the initial state
On.
Above-mentioned piezoelectric element is the multi-layer ceramics dignity being stacked, and the two sides of ceramics dignity are respectively equipped with positive electrode face
And negative electrode face, it is electrically connected to a power source respectively after being connected with each other between positive electrode face, after being connected with each other between negative electrode face.
Above-mentioned displacement amplifying mechanism include set gradually from the second cover board of front end to the second rear-end plate direction it is multiple
Displacement equations lever, is connected by salient point between adjacent displacement equations lever, and the displacement equations lever of two sides is articulated with driving
On the inner wall of shell.
Using the above preferred scheme, in emergency braking, when piezoelectric element obtains electric generation mechanically deform, output loads gram
Taking return spring pushes second piston mobile to the second cover board of front end direction, the displacement by displacement amplifying mechanism to second piston
It is pushed after amplifying and adjusts push rod to the movement of side through hole interior direction, to reduce the flow area of hydraulic oil, thus suitably
Increase brake pedal resistance, actively adjust brake feel, the needs of when meeting emergency braking.
In addition, above-mentioned inductive pick-up is infrared-sensing type sensor or ultrasonic sensor, pedal displacement sensing
Device be it is double can rheostat angular displacement sensor or Hall-type angular displacement sensor.It is double can rheostat angular displacement sensor include induction
Device shell, induction shaft, the first sliding block, the first slide plate, the second sliding block and the second slide plate, inductor shell are set to the first installation
In portion, the first slide plate, the second slide plate are consistent for the radian of arcuate structure and the two, and the first slide plate and the second slide plate are fixedly installed on
In inductor shell, the one end for incuding the length direction of shaft is fixedly connected with the top of pedal shaft, and the first sliding block, second are slided
Block is set to the other end of the length direction of induction shaft and setting interval is provided therebetween, and the movement of the first sliding block is set to
On first slide plate, the movement of the second sliding block is set on the second slide plate.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the structural schematic diagram of pedal sense simulator of the invention.
Fig. 3 is the structural schematic diagram of piezoelectric element driving mechanism of the invention.
Fig. 4 is the structural schematic diagram of pedal displacement sensor of the invention.
Fig. 5 is the circuit diagram of pedal displacement sensor of the invention.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, as shown in Figures 1 to 5, provided in one of embodiment of the invention
A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism, comprising:
Mounting bracket 4, including connected the first mounting portion and the second mounting portion, the second installation position is in the first mounting portion
Lower section；
Brake pedal 1, including pedal body and pedal shaft, the top of pedal shaft are rotatably dispose in the first mounting portion
On, the bottom end that pedal body is set to pedal shaft is used to that pedal shaft to be driven to rotate around the tie point of itself and the first mounting portion；
Pedal sense simulator, including the first pedal sense simulation mechanism 6, bindiny mechanism 7, the second pedal sense analog machine
Structure 8 and brake pushrod 3, the first pedal sense simulation mechanism 6 are set on the second mounting portion, and brake pushrod 3 is stepped on first respectively
Plate feels that simulation mechanism 6, pedal shaft are flexibly connected, and the second pedal sense simulation mechanism 8 is set to the simulation of the first pedal sense
The lower section of mechanism 6, bindiny mechanism 7 be set between the first pedal sense simulation mechanism 6 and the second pedal sense simulation mechanism 8 and
It is equipped with hydraulic oil in the space being connected between three, is equipped with emergency button 18 in the first pedal sense simulation mechanism 6, emergency is opened
Closing is that mechanical contact-type switchs, and emergency button is normally open；
Piezoelectric element driving mechanism 9, movement are set in bindiny mechanism 7, and the flow area for adjusting hydraulic oil comes
Adjust the characteristic curve of pedal sense simulator；
Inductive pick-up 2, is set on pedal body, for perceiving the braking intention of driver in advance；
Pedal displacement sensor 5 is set on the first mounting portion and connect with the top of pedal shaft, for accurately knowing
The braking intention of other driver.
Compared to the prior art, inductive pick-up 2 for perceiving the braking intention of driver, pedal in advance for present embodiment
Displacement sensor 5 is used to accurately identify the braking intention of driver, and piezoelectric element driving mechanism 9 is cut by adjusting hydraulic oil circulation
Face and flow damping adjust braking operation characteristic curve, compact-sized reasonable, and easy to operate quick, brake feel is adjustable, can have
It imitates simulating brake to feel, improves stability, the comfortableness and security of braking, and there is pre-identification braking intention and emergency system
Dynamic function.
As shown in Fig. 2, in order to further optimize implementation result of the invention, in another embodiment of the invention
In, on the basis of foregoing teachings, the first above-mentioned pedal sense simulation mechanism 6 includes first shell 12, the first elastic parts
With third elastic parts, the axial ends of first shell 12 is respectively equipped with cover board of front end 10 and rear-end plate, the first elastic parts
It seals and is movably set in the axial cavity of first shell and be close proximity in cover board of front end 10 in the initial state, third bullet
Property component is set on rear-end plate；First elastic parts includes the first spring-leaf retainer 11, second spring seat ring 15, the first spring
13, sealing ring 14 and emergency push rod 16, the first spring-leaf retainer 11, second spring seat ring 15 are axial by its front end along first shell 12
It is set in turn in the axial cavity of first shell 12 to the back-end, the first spring 13 is set to the first spring-leaf retainer 11 and the second bullet
On spring abutment circle 15, sealing ring 14 is sheathed on second spring seat ring 15, and emergency push rod 16 is set on second spring seat ring 15, is made
Dynamic push rod 3 is movably set in first shell 12 and connect with the first spring-leaf retainer 11.
Above-mentioned third elastic parts is elastic element 17, and elastic element 17 is made by elastoplastic, elastic element
17 be cylindrical structure, and elastic element 17 is set on rear-end plate, and emergency button 18 is set on rear-end plate and is located at elasticity
The center of element 17.
Above-mentioned bindiny mechanism includes the second shell 20 being set to below first shell, the upper surface of second shell 20 and
The middle position of lower end surface be equipped with center hole, center hole respectively with first shell 12, the axial cavity phase of third shell 21
It is connected to, is additionally provided with the side through hole being connected with center hole on the side end face of second shell 20.
The second above-mentioned pedal sense simulation mechanism includes third shell 21 and the second elastic parts, the axis of third shell 21
Bottom head covers are equipped with to one end, the axle center of third shell 21 and the axle center of first shell 12 are mutually perpendicular to, and the second elastic parts is close
It seals and is movably set in the axial cavity of third shell 21 and in the initial state with certain preload, first shell
12, hydraulic oil is filled in the space being connected between second shell 20 and third shell 21；Second elastic parts includes second
Spring 23 and first piston 22, first piston 22 are set to the axial cavity of third shell 21 along the axial movement of third shell 21
Interior, second spring 23 is set between first piston 22 and bottom head covers, and the stiffness coefficient of the first spring 13 is greater than second spring
23 stiffness coefficient.
Using above-mentioned limited scheme, the space that is connected between first shell 12, second shell 20 and third shell 21
It is interior to be filled with hydraulic oil, so that the first spring 13 and second spring 23 have certain preload in the initial state, and make the
One spring-leaf retainer 11 is close proximity in cover board of front end 10.
In the braking of middle small intensity, mainly by the brake feel of small intensity in the simulation of second spring 23.
In the braking of big intensity, second spring 23 has been compressed near the limit, is mainly simulated by the first spring 13 big strong
The brake feel of degree.
In emergency braking, piezoelectric element driving mechanism 9 reduces the flow area of hydraulic oil, steps on to suitably increase braking
Plate resistance, actively adjusts brake feel, the needs of when meeting emergency braking.
When braking system when something goes wrong, brake pushrod 9 is pushed to bottom, and elastic element compressive deformation is larger so that emergency
Switch 18 is closed, and is provided emergency brake signal according to automobile practical operation situation and is started alternate brake function.If emergency button closes
It closes, and braking deceleration is consistent with braking requirement, then without starting alternate brake function；If emergency button is closed, and brakes and subtract
Speed and braking requirement deviation are larger, then enable alternate brake function, implement car emergency braking, to improve running car peace
Full performance.In addition, it is also necessary in time by malfunction indicator lamp and audible alarm, driver be reminded to pay attention to.
As shown in figure 3, in order to further optimize implementation result of the invention, in another embodiment of the invention
In, on the basis of foregoing teachings, above-mentioned piezoelectric element driving mechanism is living including the 4th shell 33, piezoelectric element 34, second
Plug 25, displacement amplifying mechanism, adjusting push rod 24, pilot plunger 19 and return spring 30, the axial ends of the 4th shell 33 are equipped with
Second cover board of front end and the second rear-end plate are arranged for adjusting the movable through-hole of push rod, the 4th shell in the second cover board of front end
First axis cavity, the second axial cavity and third are disposed with from the second cover board of front end to the second rear-end plate direction in 33
Axial cavity, piezoelectric element 34 are set in third axial cavity and are close proximity on the inside of the second rear-end plate, and second piston 25 is moved
Dynamic to be set in third axial cavity and connect with piezoelectric element 34, displacement amplifying mechanism is set in the second axial cavity
And connect respectively with second piston 25, adjusting push rod 24, adjusting push rod 24 is set in first axis cavity and and pilot plunger
19 connection, pilot plunger 19 seal and be movably set in side through hole, return spring 30 be sheathed on adjust push rod 24 on and
It is close proximity to second piston 25 on piezoelectric element 34.
Above-mentioned piezoelectric element 34 is the multi-layer ceramics dignity being stacked, and the two sides of ceramics dignity are respectively equipped with positive electrode
Face and negative electrode face are electrically connected to a power source, root respectively after being connected with each other between positive electrode face, after being connected with each other between negative electrode face
According to the voltage for needing to supply 0~600 volt.
Above-mentioned displacement amplifying mechanism includes second set gradually from the second cover board of front end to the second rear-end plate direction
Displacement equations lever 28 and the first displacement equations lever 26, second displacement are amplified between lever 28 and the first displacement equations lever 26
It is connected by salient point, second displacement amplification lever 28 and the first displacement equations lever 26 are articulated with the by fixed hinge 32 respectively
On two fixed hinge pedestals 29, the first fixed hinge pedestal 31.
Using the above preferred scheme, in emergency braking, when piezoelectric element 34 obtains electric generation mechanically deform, output loads
Return spring is overcome to push second piston 25 mobile to side through hole interior direction, by displacement amplifying mechanism to second piston 25
Displacement pushes after amplifying adjusts push rod to the movement of side through hole interior direction, thus reduce the flow area of hydraulic oil, thus
It is appropriate to increase brake pedal resistance, brake feel is actively adjusted, the needs of when meeting emergency braking.
When 34 power loss of piezoelectric element, the deformation of piezoelectric element 34 disappears, and under the action of return spring 30, adjusts push rod 24
Mobile to the second rear-end plate direction, pilot plunger 19 is also mobile to the second rear-end plate direction, and the flow area of hydraulic oil increases
Greatly, while passing through displacement equations lever pushing second piston 25 to the mobile return in the second rear-end plate direction.By adjusting piezoelectricity
The voltage value or power pulses duty ratio applied on element 34, may be implemented the accurate control to the flow area of hydraulic oil.
Appropriate location in driver's cabin on instrument board is provided with brake feel regulating device, including " increase " and " reduction "
Two basic buttons.When pressing " increase " button, 34 driving voltage of piezoelectric element increases, by adjusting push rod 24, pilot plunger
19 push second piston 25 mobile to side through hole interior direction, increase brake pedal force；When pressing " reduction " button, piezoelectric element
34 driving voltages reduce, mobile to the first rear-end plate direction by adjusting push rod 24, the drive second piston 25 of pilot plunger 19,
Reduce brake pedal force.Driver can be accustomed to according to the personal preference of oneself, the autonomous work for changing pedal sense simulator
Characteristic curve.Moreover, there are the storing mechanism of braking system different drivers to adjust the memory function of data, different drivers can
By memory function, characteristic working curve set by One-key recovery oneself last time.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, above-mentioned inductive pick-up 2 be infrared-sensing type sensor or ultrasonic sensor, specifically can be according to reality
The selection of border situation.
Using the above preferred scheme, in automobile brake, when driver moves to right crus of diaphragm above brake pedal, induction
Sensor 2 can perceive in advance the braking intention of driver before driver implements practical braking, implement for braking moment and
Braking force distribution offer is set aside some time, and so as to shorten the corresponding time is braked, proposes vehicle synthetical restraint performance.Inductive pick-up 2
The time difference between signal and the generation signal of pedal displacement sensor 5 is being generated in detection range by inductive pick-up 2, it can
Prejudge the urgency level of this braking.Different urgency levels, brake actuator use different control strategies, such as
When emergency braking, brake actuator should increase braking moment and increase speed with what pedal displacement changed, enable automobile fast
Speed parking, and improve brake safe performance.
In order to further optimize implementation result of the invention, in another embodiment of the invention, aforementioned interior
On the basis of appearance, above-mentioned pedal displacement sensor 5 be it is double can rheostat angular displacement sensor or Hall-type angular displacement sensor.
As shown in Fig. 4 to Fig. 5, it is double can rheostat angular displacement sensor include that inductor shell, induction shaft 35, first are sliding
Block 36, the first slide plate 37, the second sliding block 39 and the second slide plate 38, inductor shell are set on the first mounting portion, the first slide plate
37, the second slide plate 38 is consistent for the radian of arcuate structure and the two, and the first slide plate 37 and the second slide plate 38 are fixedly installed on induction
In device shell, the one end for incuding the length direction of shaft is fixedly connected with the top of pedal shaft, the first sliding block 36, the second sliding block
39 are set to the other end of the length direction of induction shaft and setting interval are provided therebetween, the mobile setting of the first sliding block 36
In on the first slide plate 37, the movement of the second sliding block 39 is set on the second slide plate 38.
Using the above preferred scheme, two slide plates and two sliding blocks respectively in connection with, constitute two slide rheostat G101,
G102.When driver steps on brake pedal, induction shaft is rotated with pedal shaft, and the first sliding block 36, the second sliding block 39 divide
It is not slided on the first slide plate 37, the second slide plate 38, pedal displacement and change in displacement rate information is exported, for judging driver's
Braking intention.The control precision and fault-tolerant ability of braking system can be improved in two slide rheostat cooperatings.If wherein one
A failure can work on according to another signal, and warning reminding driver repairs as early as possible in time.
The above are merely the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art,
Without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (10)
1. a kind of brake feel piezoelectric type adjustable damping brake treadle mechanism characterized by comprising
Mounting bracket, including connected the first mounting portion and the second mounting portion, the second installation position is in the lower section of the first mounting portion；
Brake pedal, including pedal body and pedal shaft, the top of pedal shaft are rotatably dispose on the first mounting portion, pedal
The bottom end that ontology is set to pedal shaft is used to that pedal shaft to be driven to rotate around the tie point of itself and the first mounting portion；
Pedal sense simulator, including the first pedal sense simulation mechanism, bindiny mechanism, the second pedal sense simulation mechanism and system
Dynamic push rod, the first pedal sense simulation mechanism are set on the second mounting portion, and brake pushrod is simulated with the first pedal sense respectively
Mechanism, pedal shaft are flexibly connected, and the second pedal sense simulation mechanism is set to the lower section of the first pedal sense simulation mechanism, even
Connection mechanism is set between the first pedal sense simulation mechanism and the second pedal sense simulation mechanism and is connected between three
It is equipped with hydraulic oil in space, is equipped with emergency button in the first pedal sense simulation mechanism；
Piezoelectric element driving mechanism, movement are set in bindiny mechanism, step on for changing the flow area of hydraulic oil to adjust
The characteristic curve of plate sense simulator；
Inductive pick-up is set on pedal body, for perceiving the braking intention of driver in advance；
Pedal displacement sensor is set on the first mounting portion and connect with the top of pedal shaft, drives for accurately identifying
The braking intention for the person of sailing.
2. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 1, which is characterized in that first steps on
Plate feels that simulation mechanism includes first shell, the first elastic parts and third elastic parts, the axial ends difference of first shell
Equipped with cover board of front end and rear-end plate, the first elastic parts seal and be movably set in the axial cavity of first shell and
It is close proximity in cover board of front end when original state, third elastic parts is set on rear-end plate；First elastic parts includes first
Spring-leaf retainer, second spring seat ring, the first spring, sealing ring and emergency push rod, the first spring-leaf retainer, second spring seat ring are along the
One shell is axial to be set in turn in the axial cavity of first shell to the back-end by its front end, and the first spring is set to the first spring
On seat ring and second spring seat ring, sealing ring is sheathed on second spring seat ring, and emergency push rod is set on second spring seat ring,
Brake pushrod is movably set in first shell and connect with the first spring-leaf retainer.
3. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 2, which is characterized in that third bullet
Property component be elastic element, elastic element is made by elastoplastic, and elastic element is cylindrical structure, and elastic element is set to
On rear-end plate, emergency button is set to the center on rear-end plate and being located at elastic element.
4. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 3, which is characterized in that bindiny mechanism's packet
The second shell being set to below first shell is included, the upper surface of second shell and the middle position of lower end surface are equipped with center circle
Hole, center hole are connected with the axial cavity of the third shell in first shell and the second pedal sense simulation mechanism respectively,
The side through hole being connected with center hole is additionally provided on the side end face of second shell.
5. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 4, which is characterized in that second steps on
Plate feels that simulation mechanism includes third shell and the second elastic parts, and axial one end of third shell is equipped with bottom head covers, third
The axle center of shell and the axle center of first shell are mutually perpendicular to, and the second elastic parts seals and is movably set to the axis of third shell
Into cavity and in the initial state with certain preload, it is connected between first shell, second shell and third shell
Space in be filled with hydraulic oil；Second elastic parts includes second spring and first piston, and first piston is along third shell
Axial movement is set in the axial cavity of third shell, and second spring is set between first piston and bottom head covers, and first
The stiffness coefficient of spring is greater than the stiffness coefficient of second spring.
6. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 5, which is characterized in that piezoelectricity member
Part driving mechanism includes the 4th shell, piezoelectric element, second piston, displacement amplifying mechanism, adjusts push rod, pilot plunger and return
Spring, the axial ends of the 4th shell are equipped with the second cover board of front end and the second rear-end plate, are arranged in the second cover board of front end and are used for
The movable through-hole of push rod is adjusted, the 4th shell is interior to be disposed with first axle from the second cover board of front end to the second rear-end plate direction
To cavity, the second axial cavity and third axial cavity, piezoelectric element is set in third axial cavity and after being close proximity to second
On the inside of end casing, second piston is mobile to be set in third axial cavity and connects with piezoelectric element, displacement amplifying mechanism
It is set in the second axial cavity and is connect respectively with second piston, adjusting push rod, adjust push rod and be set to first axis cavity
Interior and connect with pilot plunger, pilot plunger is sealed and is movably set in the side through hole of second shell, and return spring is arranged
In adjusting on push rod and be in the initial state close proximity to second piston on piezoelectric element.
7. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 6, which is characterized in that piezoelectricity member
Part is the multi-layer ceramics dignity being stacked, and the two sides of ceramics dignity are respectively equipped with positive electrode face and negative electrode face, positive electrode face
Between be connected with each other after, between negative electrode face be connected with each other after be electrically connected to a power source respectively.
8. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 6, which is characterized in that displacement is put
Great institutions include the multiple displacement equations levers set gradually from the second cover board of front end to the second rear-end plate direction, adjacent position
It moves between amplification lever and is connected by salient point, the displacement equations lever of two sides is articulated on the inner wall of the 4th shell.
9. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 1, which is characterized in that induction passes
Sensor is infrared-sensing type sensor or ultrasonic sensor, pedal displacement sensor be it is double can rheostat angular displacement sensor
Or Hall-type angular displacement sensor.
10. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 9, which is characterized in that it is double can
Rheostat angular displacement sensor includes that inductor shell, induction shaft, the first sliding block, the first slide plate, the second sliding block and second are sliding
Piece, inductor shell are set on the first mounting portion, and the first slide plate, the second slide plate are consistent for the radian of arcuate structure and the two,
First slide plate and the second slide plate be fixedly installed in inductor shell, incudes one end and the pedal shaft of the length direction of shaft
Top is fixedly connected, and the first sliding block, the second sliding block are set to the other end of the length direction of induction shaft and setting therebetween
There is setting to be spaced, the movement of the first sliding block is set on the first slide plate, and the movement of the second sliding block is set on the second slide plate.
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| CN201710224146.8A CN107117143B (en) | 2017-04-07 | 2017-04-07 | A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism |
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| CN201710224146.8A CN107117143B (en) | 2017-04-07 | 2017-04-07 | A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism |
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| CN107117143A CN107117143A (en) | 2017-09-01 |
| CN107117143B true CN107117143B (en) | 2019-07-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108556822A (en) * | 2018-01-02 | 2018-09-21 | 北京汽车股份有限公司 | Mechanically aided formula braking system and vehicle |
| CN110126959A (en) * | 2018-02-02 | 2019-08-16 | 张奉琦 | A kind of anti-deadlock hydraulic brake system framework and its implementation method |
| CN112849107B (en) * | 2021-02-25 | 2022-03-08 | 吉林大学 | Hierarchical brake pedal simulator |
| CN112896116B (en) * | 2021-03-19 | 2022-07-08 | 江苏理工学院 | Electromagnetic regulation type intelligent pedal mechanism for braking feeling of electric automobile |
| CN112918440B (en) * | 2021-03-19 | 2022-09-27 | 江苏理工学院 | Formula intelligence pedal mechanism is adjusted to electric automobile braking sensation damping |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007030312A1 (en) * | 2007-06-29 | 2009-01-02 | Robert Bosch Gmbh | pedal travel |
| DE102010024734A1 (en) * | 2009-10-31 | 2011-05-05 | Volkswagen Ag | Brake assembly for e.g. pure electric vehicle, has brake pedal decoupled from transmission device in operating mode and coupled with device in another operating mode, and valve closed for former mode and opened for latter mode |
| CN101982356B (en) * | 2010-11-14 | 2012-07-25 | 江苏技术师范学院 | Automobile brake pedal mechanism and pedal feeling simulator thereof |
| CN102267450B (en) * | 2011-05-05 | 2015-07-15 | 浙江师范大学 | Electro-hydraulic control type braking power assisting device |
| JP5411963B2 (en) * | 2012-05-21 | 2014-02-12 | 本田技研工業株式会社 | Pedal simulator |
| CN103486163B (en) * | 2013-09-29 | 2016-06-08 | 江苏理工学院 | Piezoelectric brake actuating mechanism of vehicle electronic mechanical brake system |
| KR102255792B1 (en) * | 2014-06-26 | 2021-05-27 | 주식회사 만도 | Pedal simulator |
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