CN107117143A - 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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- CN107117143A CN107117143A CN201710224146.8A CN201710224146A CN107117143A CN 107117143 A CN107117143 A CN 107117143A CN 201710224146 A CN201710224146 A CN 201710224146A CN 107117143 A CN107117143 A CN 107117143A
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- brake
- spring
- feel
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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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- Mechanical Engineering (AREA)
- 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 mechanism, including mounting bracket, brake pedal, pedal sense simulator, piezoelectric element drive 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 prior art, inductive pick-up is used for the braking intention for perceiving driver in advance, pedal displacement sensor is used for the braking intention for accurately identifying driver, piezoelectric element drive mechanism adjusts braking operation characteristic curve by adjusting hydraulic oil flow area and flow damping, and compact conformation is rationally, easy to operate quick, brake feel is adjustable, it simulating brake can effectively feel, improve the stability, comfortableness and security of braking, and with pre-identification braking intention and emergency brake function.
Description
Technical field
The invention belongs to vehicle brake apparatus technical field, and in particular to a kind of brake feel piezoelectric type adjustable damping braking
Pedal gear.
Background technology
Brakes is one of important component of automobile chassis, is directly connected to comprehensive vehicle performance and lives and properties
Safety.Although conventional hydraulic formula, pneumatic brake system disclosure satisfy that the requirements of existing brake legislation, pipe is there is
Road arrangement is complicated, actively can not be adjusted and be difficult to and other by vacuum booster unit, braking response speed relatively slow, braking moment
The weak points, the demand for development of the integrated control of unsuitable automobile especially electric automobile chassis such as system integration control.
The electric controlled brake system reality decoupling of brake treadle mechanism and brake actuator, mainly there is electro-hydraulic brake
Two kinds of system (EHB) and electromechanical braking system (EMB), are eliminated straight between brake treadle mechanism and brake actuator
Connect in succession, using electric wire as information transmission media, electronic control unit recognizes braking intention, control system according to relevant sensor signals
Dynamic executing agency's action, realizes the control to each wheel braking force, with fast independent of vacuum booster unit, dynamic response
Speed, the advantages of be easily integrated control, it compensate for the deficiency on Conventional braking systems structural principle.
Because 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, and brake pedal structure and operator brake sensation etc. can all be varied widely, because
This needs to carry out brand-new design to automobile decoupling distributed brake Braking system pedal gear.At present, in the vapour that can have inquired about
It is that Authorization Notice No. is with maximally related technology of the invention in car brake system pedal gear relevant information
CN101982356B patent of invention --- automobile brake pedal mechanism and its pedal sense simulator and Authorization Notice No. are
A kind of CN201989768U utility model patent --- brake pedal apparatus of automobile line control brake system.Foregoing invention is used
Pedal displacement sensor recognizes the braking intention of driver, is hindered using magnetic flow liquid 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 recognizes the braking intention of driver jointly, and pedal sense analog functuion part uses dual spring mechanism,
During middle small intensity braking, only outer lateral spring works；In high intensity or brake hard, medial and lateral spring simultaneously participates in work
Make.But, piezoelectric type pedal pressing force sensor etc. in magnetic flow liquid formula pedal sense simulator and foregoing invention in foregoing invention,
All there are problems that it is complicated, control cumbersome, cost higher and realize, and both do not account for braking intention and know in advance
Other and emergency brake function.To so far, the brake feel piezoelectric type with braking intention pre-identification and emergency brake function
Adjustable damping brake treadle mechanism, which also rarely has, to be referred to.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of brake feel piezoelectric type adjustable damping brake pedal machine
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, including：
Mounting bracket, including connected the first installation portion and the second installation portion, the second installation position is in the first installation portion
Lower section；
Brake pedal, including pedal body and pedal shaft, the top of pedal shaft, which is rotated, to be arranged on the first installation portion,
The bottom that pedal body is arranged at pedal shaft is used to drive pedal shaft to rotate around the tie point of itself and the first installation 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 is arranged on the second installation portion, brake pushrod respectively with the first pedal sense
Simulation mechanism, pedal shaft are flexibly connected, and the second pedal sense simulation mechanism is arranged under the first pedal sense simulation mechanism
Side, bindiny mechanism is arranged between the first pedal sense simulation mechanism and the second pedal sense simulation mechanism and is connected between three
It is provided with logical space in hydraulic oil, the first pedal sense simulation mechanism and is provided with emergency button；
Piezoelectric element drive mechanism, its movement is arranged in bindiny mechanism, is adjusted for adjusting the flow area of hydraulic oil
Save the characteristic curve of pedal sense simulator；
Inductive pick-up, it is arranged on pedal body, the braking intention for perceiving driver in advance；
Pedal displacement sensor, it is arranged on the first installation portion and is connected with the top of pedal shaft, for accurately knowing
The braking intention of other driver.
The present invention is compared to prior art, and inductive pick-up is used for the braking intention for perceiving driver in advance, pedal displacement
Sensor is used for the braking intention for accurately identifying driver, and piezoelectric element drive mechanism is by adjusting hydraulic oil flow area and stream
Dynamic damping adjusts braking operation characteristic curve, and rationally, easy to operate quick, brake feel is adjustable, can effectively simulate for compact conformation
Brake feel, improves the stability, comfortableness and security of braking, and with pre-identification braking intention and emergency brake work(
Energy.
As preferred scheme, the first above-mentioned pedal sense simulation mechanism include the first housing, the first elastic parts and
3rd elastic parts, the axial two ends of the first housing are respectively equipped with cover board of front end and rear-end plate, the sealing of the first elastic parts and
Movably it is arranged in the axial cavity of the first housing and is close proximity in original state in cover board of front end, the 3rd 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 answered
Hitch bar, the first spring-leaf retainer, second spring seat ring are axially set in turn in first shell to the back-end along the first housing by its front end
In the axial cavity of body, the first spring is arranged on the first spring-leaf retainer and second spring seat ring, and sealing ring is sheathed on the second bullet
On spring abutment circle, emergent push rod is arranged on second spring seat ring, brake pushrod be movably set in first shell body and with the first bullet
Spring abutment circle is connected.
The 3rd above-mentioned elastic parts is flexible member, and flexible member is made by elastoplast, and flexible member is circle
Rod structure, flexible member is arranged on rear-end plate, and emergency button is arranged on rear-end plate and positioned at the center of flexible member
Position.
Above-mentioned bindiny mechanism includes being arranged at the second housing below the first housing, the upper surface and lower end of the second housing
The centre position in face is provided with center hole, and axial cavity of the center hole respectively with the first housing, the 3rd housing is connected, and second
The side through hole being connected with center hole is additionally provided with the side end face of housing.
The second above-mentioned pedal sense simulation mechanism includes the 3rd housing and the second elastic parts, the axial direction one of the 3rd housing
End is provided with bottom head covers, and the axle center and the axle center of the first housing of the 3rd housing are mutually perpendicular to, the sealing of the second elastic parts and movement
Ground is arranged in the axial cavity of the 3rd housing and in original state with certain preload, the first housing, the second housing
And the 3rd be filled with hydraulic oil in the space being connected between housing；Second elastic parts includes second spring and first piston,
First piston is arranged in the axial cavity of the 3rd housing along the axial movement of the 3rd housing, and second spring is arranged at first piston
Between bottom head covers, the stiffness coefficient of the first spring is more than the stiffness coefficient of second spring.
Using above-mentioned limited scheme, filled in the space being connected between the first housing, the second housing and the 3rd housing
There is hydraulic oil so that the first spring and second spring, with certain preload, and make the first spring-leaf retainer in original state
It is close proximity in cover board of front end.When middle small intensity is braked, mainly by second spring simulate in small intensity brake feel；Big strong
During 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
During braking, piezoelectric element drive mechanism reduces the flow area of hydraulic oil, so as to suitably increase brake pedal resistance, actively adjusts
Brake feel, meets demand during brake hard.When brakes goes wrong, brake pushrod is pushed to bottom, flexible member
Compressive deformation is larger so that emergency button is closed, and can start alternate brake function.
As preferred scheme, above-mentioned piezoelectric element drive mechanism include the 4th housing, piezoelectric element, second piston,
Displacement amplifying mechanism, regulation push rod, pilot plunger and return spring, the axial two ends of the 4th housing provided with the second cover board of front end and
It is provided for adjusting in second rear-end plate, the second cover board of front end in the through hole of push rod activity, the 4th housing by the second drive end bearing bracket
Plate is disposed with the first axial cavity, the second axial cavity and the 3rd axial cavity, piezoelectricity member to the second rear-end plate direction
Part is arranged in the 3rd axial cavity and is close proximity on the inside of the second rear-end plate, and second piston movement is arranged at the 3rd axial cavity
It is interior and connection is contacted with piezoelectric element, displacement amplifying mechanism be arranged in the second axial cavity and respectively with second piston, regulation
Push rod is connected, and regulation push rod is arranged in the first axial cavity and is connected with pilot plunger, and pilot plunger is sealed and movably set
It is placed in side through hole, return spring is sheathed on regulation push rod and in original state so that second piston is close proximity to piezoelectric element
On.
Above-mentioned piezoelectric element is the multi-layer ceramics dignity being stacked, and the both sides of ceramics dignity are respectively equipped with positive electrode face
And negative electrode face, after being connected with each other after being connected with each other between positive electrode face, between negative electrode face respectively with power electric connection.
Above-mentioned displacement amplifying mechanism include from the second cover board of front end to the second rear-end plate direction set gradually it is multiple
Connected between displacement equations lever, adjacent displacement equations lever by salient point, the displacement equations lever of both sides is articulated with driving
On the inwall of housing.
Using above-mentioned preferred scheme, in brake hard, when piezoelectric element obtains electric generation mechanically deform, output loads gram
Taking return spring promotes second piston to be moved to the second cover board of front end direction, the displacement by displacement amplifying mechanism to second piston
Regulation push rod is promoted to be moved to direction on the inside of side through hole after being amplified, so as to reduce the flow area of hydraulic oil, so that suitably
Increase brake pedal resistance, actively adjust brake feel, meet demand during brake hard.
In addition, above-mentioned inductive pick-up is infrared-sensing type sensor or ultrasonic sensor, pedal displacement sensing
Device for it is double can rheostat angular displacement sensor or Hall-type angular displacement sensor.It is double can rheostat angular displacement sensor include sensing
Device housing, sensing rotating shaft, the first sliding block, the first slide plate, the second sliding block and the second slide plate, inductor housing are arranged at the first installation
In portion, the first slide plate, the second slide plate are arcuate structure and the radian of the two is consistent, and the first slide plate and the second slide plate are fixedly installed on
In inductor housing, one end of length direction of sensing rotating shaft is fixedly connected with the top of pedal shaft, and the first sliding block, second are slided
Block is arranged at the other end of the length direction of sensing rotating shaft and setting interval is provided therebetween, and the movement of the first sliding block is arranged at
On first slide plate, the movement of the second sliding block is arranged on the second slide plate.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the structural representation of the pedal sense simulator of the present invention.
Fig. 3 is the structural representation of the piezoelectric element drive mechanism of the present invention.
Fig. 4 is the structural representation of the pedal displacement sensor of the present invention.
Fig. 5 is the circuit diagram of the pedal displacement sensor of the present invention.
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 the one of which embodiment of the present invention
A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism, including：
Mounting bracket 4, including connected the first installation portion and the second installation portion, the second installation position is in the first installation portion
Lower section；
Brake pedal 1, including pedal body and pedal shaft, the top of pedal shaft, which is rotated, is arranged at the first installation portion
On, the bottom that pedal body is arranged at pedal shaft is used to drive pedal shaft to rotate around the tie point of itself and the first installation 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 arranged on the second installation 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 arranged at the simulation of the first pedal sense
The lower section of mechanism 6, bindiny mechanism 7 be arranged between the first pedal sense simulation mechanism 6 and the second pedal sense simulation mechanism 8 and
It is provided with the space being connected between three in hydraulic oil, the first pedal sense simulation mechanism 6 and is provided with emergency button 18, it is emergent to open
Close and switched for mechanical contact-type, emergency button is normally open；
Piezoelectric element drive mechanism 9, its movement is arranged 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, it is arranged on pedal body, the braking intention for perceiving driver in advance；
Pedal displacement sensor 5, it is arranged on the first installation portion and is connected with the top of pedal shaft, for accurately knowing
The braking intention of other driver.
Present embodiment is compared to prior art, and inductive pick-up 2 is used for the braking intention for perceiving driver in advance, pedal
Displacement transducer 5 is used for the braking intention for accurately identifying driver, and piezoelectric element drive mechanism 9 is cut by adjusting hydraulic oil circulation
Face and flow damping regulation braking operation characteristic curve, rationally, easy to operate quick, brake feel is adjustable, can have for compact conformation
Imitate simulating brake to feel, improve the stability, comfortableness and security of braking, and with pre-identification braking intention and emergent system
Dynamic function.
As shown in Fig. 2 the implementation result in order to further optimize the present invention, in another embodiment of the invention
In, on the basis of foregoing teachings, the first above-mentioned pedal sense simulation mechanism 6 includes the first housing 12, the first elastic parts
With the 3rd elastic parts, the axial two ends of the first housing 12 are respectively equipped with cover board of front end 10 and rear-end plate, the first elastic parts
Seal and be movably arranged in the axial cavity of the first housing and be close proximity in original state in cover board of front end 10, the 3rd bullet
Property component is arranged on rear-end plate；First elastic parts includes the first spring-leaf retainer 11, second spring seat ring 15, the first spring
13rd, sealing ring 14 and emergent push rod 16, the first spring-leaf retainer 11, second spring seat ring 15 are along the first housing 12 axially by its front end
It is set in turn in the back-end in the axial cavity of the first housing 12, the first spring 13 is arranged at 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 emergent push rod 16 is arranged on second spring seat ring 15, is made
Dynamic push rod 3 is movably set in the first housing 12 and is connected with the first spring-leaf retainer 11.
The 3rd above-mentioned elastic parts is flexible member 17, and flexible member 17 is made by elastoplast, flexible member
17 be cylindrical structure, and flexible member 17 is arranged on rear-end plate, and emergency button 18 is arranged on rear-end plate and positioned at elasticity
The center of element 17.
Above-mentioned bindiny mechanism includes being arranged at the second housing 20 below the first housing, the upper surface of the second housing 20 and
The centre position of lower surface is provided with center hole, the axial cavity body phase of center hole respectively with the first housing 12, the 3rd housing 21
The side through hole being connected with center hole is additionally provided with connection, the side end face of the second housing 20.
The second above-mentioned pedal sense simulation mechanism includes the 3rd housing 21 and the second elastic parts, the axle of the 3rd housing 21
Bottom head covers are provided with to one end, the axle center of the 3rd housing 21 and the axle center of the first housing 12 are mutually perpendicular to, and the second elastic parts is close
Seal and be movably arranged in the axial cavity of the 3rd housing 21 and in original state with certain preload, the first housing
12nd, hydraulic oil is filled with the space being connected between the second housing 20 and the 3rd housing 21；Second elastic parts includes second
Spring 23 and first piston 22, axial movement of the first piston 22 along the 3rd housing 21 are arranged at the axial cavity of the 3rd housing 21
Interior, second spring 23 is arranged between first piston 22 and bottom head covers, and the stiffness coefficient of the first spring 13 is more than second spring
23 stiffness coefficient.
Using above-mentioned limited scheme, the space being connected between the first housing 12, the second housing 20 and the 3rd housing 21
It is interior to be filled with hydraulic oil so that the first spring 13 and second spring 23, with certain preload, and make the in original state
One spring-leaf retainer 11 is close proximity in cover board of front end 10.
When middle small intensity is braked, mainly by second spring 23 simulate in small intensity brake feel.
When big intensity is braked, 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 brake hard, piezoelectric element drive mechanism 9 reduces the flow area of hydraulic oil, so that suitably increase braking is stepped on
Plate resistance, actively adjusts brake feel, meets demand during brake hard.
When brakes goes wrong, brake pushrod 9 is pushed to bottom, and flexible member compressive deformation is larger so that emergent
The closure of switch 18 starts alternate brake function there is provided emergency brake signal according to automobile practical operation situation.If emergency button is closed
Close, and braking deceleration is consistent with braking requirement, then need not start alternate brake function；If emergency button is closed, and brake and subtract
Speed and braking requirement deviation are larger, then enable alternate brake function, implement car emergency braking, so as to improve running car peace
Full performance.In addition, in addition it is also necessary in time by malfunction indicator lamp and audible alarm, driver is reminded to note.
As shown in figure 3, the implementation result in order to further optimize the present invention, in another embodiment of the invention
In, on the basis of foregoing teachings, above-mentioned piezoelectric element drive mechanism includes the 4th housing 33, piezoelectric element 34, second and lived
Plug 25, displacement amplifying mechanism, regulation push rod 24, pilot plunger 19 and return spring 30, the axial two ends of the 4th housing 33 are provided with
It is provided for adjusting the through hole of push rod activity, the 4th housing in second cover board of front end and the second rear-end plate, the second cover board of front end
In 33 the first axial cavity, the second axial cavity and the 3rd are disposed with from the second cover board of front end to the second rear-end plate direction
Axial cavity, piezoelectric element 34 is arranged in the 3rd axial cavity and is close proximity on the inside of the second rear-end plate, and second piston 25 is moved
Dynamic to be arranged in the 3rd axial cavity and connection is contacted with piezoelectric element 34, displacement amplifying mechanism is arranged in the second axial cavity
And be connected respectively with second piston 25, regulation push rod 24, regulation push rod 24 is arranged in the first axial cavity and and pilot plunger
19 connections, pilot plunger 19 seals and is movably arranged in side through hole, return spring 30 be sheathed on regulation push rod 24 and
Second piston 25 is caused to be close proximity on piezoelectric element 34 during original state.
Above-mentioned piezoelectric element 34 is the multi-layer ceramics dignity being stacked, and the both sides of ceramics dignity are respectively equipped with positive electrode
Between face and negative electrode face, positive electrode face be connected with each other after, between negative electrode face be connected with each other after respectively with power electric connection, root
According to needing the voltage of 0~600 volt of supply.
Above-mentioned displacement amplifying mechanism includes second set gradually from the second cover board of front end to the second rear-end plate direction
Between the displacement equations lever 26 of displacement equations lever 28 and first, the second displacement amplification displacement equations lever 26 of lever 28 and first
Connected by salient point, second displacement amplification lever 28 and first displacement equations lever 26 is articulated with the by fixed hinge 32 respectively
On two fixed hinge bases 29, the first fixed hinge base 31.
Using above-mentioned preferred scheme, in brake hard, when piezoelectric element 34 obtains electric generation mechanically deform, output loads
Return spring is overcome to promote second piston 25 to be moved to direction on the inside of side through hole, by displacement amplifying mechanism to second piston 25
Displacement promotes regulation push rod to be moved to direction on the inside of side through hole after being amplified, so that reduce the flow area of hydraulic oil, so that
Appropriate increase brake pedal resistance, actively adjusts brake feel, meets demand during brake hard.
When 34 dead electricity of piezoelectric element, the deformation of piezoelectric element 34 disappears, in the presence of return spring 30, adjusts push rod 24
Moved to the second rear-end plate direction, pilot plunger 19 is also moved to the second rear-end plate direction, the flow area of hydraulic oil increases
Greatly, while moving return to the second rear-end plate direction by displacement equations lever pushing second piston 25.By adjusting piezoelectricity
The magnitude of voltage or power pulses dutycycle applied on element 34, it is possible to achieve the accurate control to the flow area of hydraulic oil.
Appropriate location in driver's cabin on instrument board is provided with brake feel adjusting means, including " increase " and " reduction "
Two basic buttons.When pressing " increase " button, the driving voltage of piezoelectric element 34 increase, by adjusting push rod 24, pilot plunger
19 promote second piston 25 to be moved to direction on the inside of side through hole, increase brake pedal force；When pressing " reduction " button, piezoelectric element
34 driving voltages reduce, and drive second piston 25 to be moved to the first rear-end plate direction by adjusting push rod 24, pilot plunger 19,
Reduce brake pedal force.Driver can be accustomed to according to the personal like of oneself, the autonomous work for changing pedal sense simulator
Characteristic curve.Moreover, there are the storing mechanism of brakes 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 the implementation result of the present invention, in another embodiment of the invention, foregoing interior
On the basis of appearance, above-mentioned inductive pick-up 2 is infrared-sensing type sensor or ultrasonic sensor, specifically can be according to reality
Border situation selection.
Using above-mentioned preferred scheme, in automobile brake, when driver moves to right crus of diaphragm above brake pedal, sensing
Sensor 2 can perceive the braking intention of driver in advance before driver implements actual braking, be braking moment implement and
Braking force distribution is provided and set aside some time, so as to shorten the braking corresponding time, puies forward car synthetical restraint performance.Inductive pick-up 2
The time difference between signal and the generation signal of pedal displacement sensor 5 is produced by inductive pick-up 2 in detection range, can
Prejudge the urgency level of this braking.Different urgency levels, brake actuator uses different control strategies, for example
During brake hard, brake actuator should increase braking moment with gathering way that pedal displacement changes so that automobile can be fast
Speed parking, and improve brake safe performance.
In order to further optimize the implementation result of the present invention, in another embodiment of the invention, foregoing interior
On the basis of appearance, above-mentioned pedal displacement sensor 5 for 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 inductor housing, sensing rotating shaft 35, first slide
Block 36, the first slide plate 37, the second sliding block 39 and the second slide plate 38, inductor housing are arranged on the first installation portion, the first slide plate
37th, the second slide plate 38 is arcuate structure and the radian of the two is consistent, and the first slide plate 37 and the second slide plate 38 are fixedly installed on sensing
In device housing, one end of length direction of sensing rotating shaft is fixedly connected with the top of pedal shaft, the first sliding block 36, the second sliding block
39 are arranged at the other end of the length direction of sensing rotating shaft and setting interval are provided therebetween, and the movement of the first sliding block 36 is set
In on the first slide plate 37, the movement of the second sliding block 39 is arranged on the second slide plate 38.
Using above-mentioned 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, sensing rotating shaft is rotated with pedal shaft, the first sliding block 36,39 points of the second sliding block
Do not slided on the first slide plate 37, the second slide plate 38, output pedal displacement and change in displacement rate information, for judging driver's
Braking intention.Two slide rheostat cooperatings, can improve the control accuracy and fault-tolerant ability of brakes.If wherein one
It is individual to break down, it can be worked on according to another signal, and warning reminding driver repairs as early as possible in time.
The above is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art,
Without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.
Claims (10)
1. a kind of brake feel piezoelectric type adjustable damping brake treadle mechanism, it is characterised in that including：
Mounting bracket, including connected the first installation portion and the second installation portion, the second installation position is in the lower section of the first installation portion；
Brake pedal, including pedal body and pedal shaft, the top of pedal shaft, which is rotated, to be arranged on the first installation portion, pedal
The bottom that body is arranged at pedal shaft is used to drive pedal shaft to rotate around the tie point of itself and the first installation 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 is arranged on the second installation 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 arranged at the lower section of the first pedal sense simulation mechanism, even
What connection mechanism was arranged between the first pedal sense simulation mechanism and the second pedal sense simulation mechanism and was connected between three
It is provided with space in hydraulic oil, the first pedal sense simulation mechanism and is provided with emergency button；
Piezoelectric element drive mechanism, its movement is arranged in bindiny mechanism, and the flow area for changing hydraulic oil is stepped on to adjust
The characteristic curve of plate sense simulator；
Inductive pick-up, it is arranged on pedal body, the braking intention for perceiving driver in advance；
Pedal displacement sensor, it is arranged on the first installation portion and is connected with the top of pedal shaft, is driven 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, it is characterised in that the first pedal sense
Feel that simulation mechanism includes the first housing, the first elastic parts and the 3rd elastic parts, the axial two ends of the first housing are respectively equipped with
Cover board of front end and rear-end plate, the first elastic parts are sealed and are movably arranged in the axial cavity of the first housing and initial
It is close proximity to during state in cover board of front end, the 3rd elastic parts is arranged on rear-end plate；First elastic parts includes the first spring
Seat ring, second spring seat ring, the first spring, sealing ring and emergent push rod, the first spring-leaf retainer, second spring seat ring are along first shell
Body is axially set in turn in the axial cavity of the first housing to the back-end by its front end, and the first spring is arranged at the first spring-leaf retainer
On second spring seat ring, sealing ring is sheathed on second spring seat ring, and emergent push rod is arranged on second spring seat ring, braking
Push rod is movably set in first shell body and is connected with the first spring-leaf retainer.
3. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 2, it is characterised in that the 3rd elastic group
Part is flexible member, and flexible member is made by elastoplast, and flexible member is cylindrical structure, and flexible member is arranged at rear end
On cover plate, emergency button is arranged on rear-end plate and positioned at the center of flexible member.
4. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 3, it is characterised in that bindiny mechanism wraps
The second housing being arranged at below the first housing is included, the upper surface of the second housing and the centre position of lower surface are provided with center circle
Hole, axial cavity of the center hole respectively with the first housing, the 3rd housing is connected, be additionally provided with the side end face of the second housing with
The side through hole that center hole is connected.
5. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 4, it is characterised in that the second pedal sense
Feel that simulation mechanism includes the 3rd housing and the second elastic parts, axial one end of the 3rd housing is provided with bottom head covers, the 3rd housing
Axle center and the axle center of the first housing be mutually perpendicular to, the second elastic parts seals and is movably arranged at the axial cavity of the 3rd housing
In vivo and in original state with certain preload, the sky being connected between the first housing, the second housing and the 3rd housing
It is interior to be filled with hydraulic oil；Second elastic parts includes second spring and first piston, axial direction of the first piston along the 3rd housing
Movement is arranged in the axial cavity of the 3rd housing, and second spring is arranged between first piston and bottom head covers, the first spring
Stiffness coefficient be more than second spring stiffness coefficient.
6. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 5, it is characterised in that piezoelectric element drives
Motivation structure includes the 4th housing, piezoelectric element, second piston, displacement amplifying mechanism, regulation push rod, pilot plunger and return bullet
Spring, the axial two ends of the 4th housing, which are provided with the second cover board of front end and the second rear-end plate, the second cover board of front end, to be provided for adjusting
The through hole of push rod activity is saved, the 4th housing is interior to be disposed with first axially from the second cover board of front end to the second rear-end plate direction
Cavity, the second axial cavity and the 3rd axial cavity, piezoelectric element are arranged in the 3rd axial cavity and are close proximity to the second rear end
On the inside of cover plate, second piston movement is arranged in the 3rd axial cavity and connection is contacted with piezoelectric element, and displacement amplifying mechanism is set
It is placed in the second axial cavity and is connected respectively with second piston, regulation push rod, regulation push rod is arranged in the first axial cavity
And be connected with pilot plunger, pilot plunger is sealed and is movably arranged in side through hole, and return spring is sheathed on regulation push rod
And in original state second piston is close proximity on piezoelectric element.
7. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 6, it is characterised in that piezoelectric element is
The multi-layer ceramics dignity being stacked, the both sides of ceramics dignity are respectively equipped between positive electrode face and negative electrode face, positive electrode face
After interconnection, between negative electrode face be connected with each other after respectively with power electric connection.
8. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 6, it is characterised in that displacement equations machine
Structure includes the multiple displacement equations levers set gradually from the second cover board of front end to the second rear-end plate direction, and adjacent displacement is put
Connected between big lever by salient point, the displacement equations lever of both sides is articulated with the inwall of drive shell.
9. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 1, it is characterised in that inductive pick-up
For infrared-sensing type sensor or ultrasonic sensor, pedal displacement sensor for it is double can rheostat angular displacement sensor or suddenly
That formula angular displacement sensor.
10. brake feel piezoelectric type adjustable damping brake treadle mechanism according to claim 9, it is characterised in that it is double can variable resistance
Formula angular displacement sensor includes inductor housing, sensing rotating shaft, the first sliding block, the first slide plate, the second sliding block and the second slide plate, sense
Device housing is answered to be arranged on the first installation portion, the first slide plate, the second slide plate are arcuate structure and the radian of the two is consistent, first slides
Piece and the second slide plate are fixedly installed in inductor housing, are sensed one end of the length direction of rotating shaft and the top of pedal shaft and are consolidated
Fixed connection, the first sliding block, the second sliding block are arranged at the other end of the length direction of sensing rotating shaft and setting are provided therebetween
Interval, the first sliding block movement is arranged on the first slide plate, and the movement of the second sliding block is arranged 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 true CN107117143A (en) | 2017-09-01 |
| CN107117143B CN107117143B (en) | 2019-07-23 |
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| CN201710224146.8A Active CN107117143B (en) | 2017-04-07 | 2017-04-07 | A kind of brake feel piezoelectric type adjustable damping brake treadle mechanism |
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| CN112896116A (en) * | 2021-03-19 | 2021-06-04 | 江苏理工学院 | Electromagnetic regulation type intelligent pedal mechanism for braking feeling of electric automobile |
| CN112918440A (en) * | 2021-03-19 | 2021-06-08 | 江苏理工学院 | Formula intelligence pedal mechanism is adjusted to electric automobile braking sensation damping |
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