CN107477110A - A kind of electric mechanical brake-by-wire device - Google Patents
A kind of electric mechanical brake-by-wire device Download PDFInfo
- Publication number
- CN107477110A CN107477110A CN201710814660.7A CN201710814660A CN107477110A CN 107477110 A CN107477110 A CN 107477110A CN 201710814660 A CN201710814660 A CN 201710814660A CN 107477110 A CN107477110 A CN 107477110A
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- China
- Prior art keywords
- piston
- clamp body
- handed screw
- braking
- braking clamp
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to a kind of electric mechanical brake-by-wire device, including motor, transmission mechanism, one-way clutch, two-way nut, left-handed screw, right handed screw, piston, connecting rod, friction stopping means etc..Motor drives one-way clutch to rotate by transmission mechanism, one-way clutch, which combines, drives two-way nut rotation, the motion of connecting rod is driven by two-way nut-screw transmission mechanism, driving piston and braking clamp body move in the opposite direction, friction plate is compressed from brake disc both sides with identical power, realizes efficient braking effect.Simple in construction, reliable operation of the invention, retardation efficiency is high, can automatically adjust brake clearance, and compensates due to influence, the design of simplified control system, available for service brake and parking braking caused by friction disc wear.
Description
Technical field
The present invention relates to brake field, existing floating caliper type disc liquid braking device can be specifically replaced, with automatically controlled machine
The mode of tool realizes that friction plate clamps brake disc from both sides with identical pressure, while can realize that brake clearance is adjustable, brakes
The adjustable line traffic control mechanical brake of intensity, refers in particular to a kind of electric mechanical brake-by-wire device.
Background technology
Brake-by-wire technology is a kind of new braking technology occurred in recent years, between brake and brake pedal not
By machinery or fluid power connection, the information controlled motor that sensor is received by control system works, realized for automobile
Reliable and stable control for brake.Mainly there are electro-hydraulic formula brakes (EHB) and mechanical type brake system electric at present
(EMB) two kinds.Line control brake system is advantageous to the optimization of braking performance of vehicle, can be easily other with ABS, ASR, ESP etc.
Electronic control system combines, therefore has wide development space.
Electro-hydraulic formula brakes (EHB) is transformed by traditional brake fluid system, and braking procedure is rapider,
It is stable, the braking safety and comfortableness of automobile are improved, but due to remaining hydraulic unit, do not possess complete brake-by-wire system
The all advantages of system, it is often viewed as a kind of product in advance of mechanical type brake system electric (EMB).
Mechanical type brake system electric (EMB) realizes braking procedure by motor drive machinery mechanism, enormously simplify system
The structure of dynamic system, makes brake more easily arrange, assemble and overhauls.But existing mechanical type brake system electric due to
Part brake often lacks the function that brake clearance automatically adjusts, and makes brake in outside environmental change and friction disc wear
In the case of the problem of causing brake actuator efficiency change indefinite, so as to bring certain difficulty to brake efficiency control.Together
When, the problems such as structure is more complicated, and installation dimension is larger be present in most of brake.
The content of the invention
It is an object of the invention to propose a kind of electric mechanical brake-by-wire device.The present invention have it is simple in construction, work can
By the advantages that, automatically adjusting for brake clearance can be realized, by the displacement or the corner that detect friction plate drive mechanism, you can change
Calculation draws braking clamping force size, so that control system is able to corresponding simplification.
Realize that the technical scheme of the object of the invention is as follows：
A kind of electric mechanical brake-by-wire device, include motor, transmission mechanism, one-way clutch, two-way nut, left-handed spiral shell
Bar, right handed screw, connecting rod, piston, rub stopping means, braking clamp body, brake disc, friction plate；Described friction plate has two
Piece, described brake disc both sides are arranged symmetrically in, one is arranged on described piston, and one is arranged on described braking clamp body
On；Described piston is arranged on described braking clamp body via described friction stopping means；Described friction stopping means
A part is fixedly mounted on described braking clamp body, there is larger frictional force between another part and described outer surface of piston,
When having relative displacement between described piston and described braking clamp body, because frictional force effect makes the spacing dress of described friction
Put interior generation elastic potential energy；The input element of transmission mechanism described in described motor connection；The terminal of described transmission mechanism
The described one-way clutch of element connection, the described two-way nut of described one-way clutch connection, described two-way nut bag
Left-handed threaded portion and right-handed thread part are included, is coordinated respectively with described left-handed screw and described right handed screw；Described
Left-handed screw and described piston between, between described right handed screw and described piston, described left-handed screw and institute
Described connecting rod is used to connect between right handed screw and described braking clamp body between the braking clamp body stated, described；Institute
The final element motion for the transmission mechanism stated, when described one-way clutch combines, drives described two-way nut rotation, described
Left-handed screw and described right handed screw influenceed by described connecting rod, can not rotate, can only be along described two-way nut
Axis direction moves, and now described left-handed screw and described right handed screw screw in simultaneously, move toward one another, drive described company
Extension bar moves, and the described braking clamp body of described connecting rod driving and described piston move in the opposite direction, described in drive
Friction plate from two side compressions described in brake disc；
During braking, described motor drives described one-way clutch to move via described transmission mechanism, now described
One-way clutch combine, drive described two-way nut rotation, pass through the described left side of two-way nut-screw transmission mechanism driving
Rotation screw rod and described right handed screw screw in simultaneously, drive described connecting rod to move, the described work of described connecting rod driving
Plug and described braking clamp body move in the opposite direction respectively, described friction plate is pressed on described brake disc both sides,
The braking effect of high efficient and reliable is obtained, now, has relative displacement between described piston and described braking clamp body, described
The stopping means that rubs is interior to produce elastic potential energy；When releasing braking, described motor is via described in described transmission mechanism driving
One-way clutch counter motion, the separation of now described one-way clutch, the elastic potential inside described friction stopping means
It can act on, make described piston and described braking clamp body relative motion, recover initial position, the driving of now described connecting rod
Described left-handed screw and described right handed screw screw out simultaneously, the rotation of described two-way nut, described two-way nut-screw
Transmission mechanism return is to adapt to the relative motion of described piston and described braking clamp body；
After described friction plate has abrasion, thickness thinning, during braking operation, described motor is via described driver
The described one-way clutch of structure driving combines, and drives described two-way nut rotation, makes described piston and described caliper
Body relative motion, elastic potential energy reaches maximum in described friction stopping means, and because friction plate is thinning, braking effect is bad,
Now described motor works on, and drives described two-way nut to be rotated further, and overcomes outer surface and the institute of described piston
Frictional force between the friction stopping means stated, makes described piston and described braking clamp body continue to relatively move, compresses system
Moving plate, obtain reliable efficient braking effect；When releasing braking, the elastic potential energy effect in described friction stopping means, make
Described piston and described braking clamp body relative motion, now described piston are connect with described friction stopping means with new
Tactile position is relatively fixed, and realizes the adjust automatically of brake clearance.
It is additionally included between described two-way nut and described left-handed screw, described right handed screw using circulation chou
Structure, to reduce frictional resistance, improve system operating efficiency.
Being additionally included between described one-way clutch and described two-way nut increases transmission system.
Described connecting rod is symmetrical arranged.
Connection between described connecting rod and described left-handed screw/right handed screw/piston/braking clamp body, Ke Yitong
The relative motion crossed between described connecting rod and described left-handed screw/right handed screw/piston/braking clamp body meets brake
Change in location during work between part, can also by described connecting rod and described left-handed screw/right handed screw/piston/
The elastic deformation of junction meets the change in location between part during brake operation between braking clamp body.
When the transmission link for being zero without reverse efficiency in described transmission mechanism or described transmission system, using locking machine
Structure realizes the parking braking under described motor powering-off state, and described lockable mechanism uses electromagnetic brake or electric-controlled mechanical system
Dynamic device, can be disconnected when being powered, power-off when fixed conveyor link in actuated element, keep described friction plate and described
Brake disc between pressure size, realize parking braking function；Set when in described transmission mechanism or described transmission system
When having the transmission link that reverse efficiency is zero, parking braking can be realized using described lockable mechanism, reverse efficiency can also be utilized
Be zero, power and motion can not back transfer, realize the parking braking under described motor powering-off state.
Also include described two-way nut to be arranged on described braking clamp body, only in described left-handed screw and described
Described connecting rod is set between right handed screw and described piston between piston, described；Or described two-way nut peace
On described piston, only right handed screw between described left-handed screw and described braking clamp body, described and described
Braking clamp body between both frame modes of described connecting rod are set.
The contact point also included between described connecting rod and described piston can move on described piston face；
Or the contact point between described connecting rod and described braking clamp body can move on described braking clamp body surface.
Brief description of the drawings
Fig. 1 is a kind of front view of the embodiment one of electric mechanical brake-by-wire device of the present invention.
Fig. 2 is a kind of A direction views of the embodiment one of electric mechanical brake-by-wire device of the present invention.
Fig. 3 is a kind of front view of the embodiment two of electric mechanical brake-by-wire device of the present invention.
Fig. 4 is a kind of front view of the embodiment three of electric mechanical brake-by-wire device of the present invention.
Explanation is marked in accompanying drawing：The two-way nuts of 1- brake-caliper support 2- guide finger 3- braking clamp body 4- right handed screws 5-
6- connecting rod 7- left-handed screw 8- one-way clutch 9- locking wheel 10- motor 11- motor shaft 12- electromagnetic brakes 13-
Sealing ring 14- piston 15- friction plate 16- brake disc 17- snap ring 18- spring 19- driving gear 20- driven gears 21-
Return spring 22- magnet coil 23- lock pin 24- worm gear 25- worm screws
Embodiment
Refer to the attached drawing 1 and accompanying drawing 2, one embodiment of the present of invention is described in detail.
As shown in figure 1, a kind of electric mechanical brake-by-wire device includes a caliper that can be moved on guide finger (2)
Body (3), guide finger (2) are fixed on brake-caliper support (1).There are brake disc (16), brake disc in the jaw of braking clamp body (3)
(16) there is friction plate (15) both sides, and one is mounted on braking clamp body (3), and one is mounted on piston (14), and piston (14) passes through
Sealing ring (13) has larger frictional force between the contact surface of sealing ring (13) and piston (14), works as work on braking clamp body (3)
When filling in the displacement of (14) in the regime of elastic deformation of sealing ring (13), without phase between the contact surface of sealing ring (13) and piston (14)
To motion.The opposite side of piston (14) has two-way nut (5), and left-handed threaded portion thereon is provided with left-handed screw (7), dextrorotation
Threaded portion is provided with right handed screw (4), connecting rod (6) hinge connection left-handed screw (7) and piston (14), right handed screw (4)
With piston (14), left-handed screw (7) and braking clamp body (3), right handed screw (4) and braking clamp body (3), these connecting rods (6)
It is symmetrical arranged, the outer surface of two-way nut (5) is connected by one-way clutch (8) with worm gear (24), coordinates work with worm gear (24)
The worm screw (25) of work is driven by motor (10).
During braking operation, motor (10) drives worm screw (25) and worm gear (24) to rotate, and now one-way clutch (8) combines,
Two-way nut (5) is driven to rotate, left-handed screw (7) and right handed screw (4) are limited by connecting rod (6), can only be along two-way nut (5)
Axis direction movement, now, left-handed screw (7) moves down, and right handed screw (4) moves up, i.e., both simultaneously screw in pair
To nut (5), move toward one another, connecting rod (6) motion is driven, promotes braking clamp body (3) to move right, piston (14) is transported to the left
Dynamic, i.e. piston (14) and braking clamp body (3) moves in the opposite direction, and friction plate corresponding to drive (15) is from both sides with identical
Force the braking effect for brake disc (16), realizing high efficient and reliable.Now, elastic deformation, storage elasticity occur for sealing ring (13)
Without relative motion between the contact surface of potential energy, sealing ring (13) and piston (14).When releasing braking operation, motor (10) drives worm gear
Worm mechanism rotates backward, and now, one-way clutch (8) separation, two-way nut (5) is in free state, sealing ring (13) storage
The elastic potential energy release deposited, makes piston (14) and braking clamp body (3) relative motion, drives connecting rod (6) motion, promotes left-handed spiral shell
Bar (7) moves upwards, and right handed screw (4) moves downward, i.e., both are backwards to moving, and two-way nut (5) is in sealing ring (13)
Elastic potential energy effect is lower to be reversely rotated, and all elements recover initial position.
When friction plate (15) wears, after thickness is thinning, during braking operation, motor (10) pass through worm-and-wheel gear drive it is single
Combined to clutch (8), drive two-way nut (5) to rotate, promote piston (14) and braking clamp body (3) relative motion, sealing ring
(13) when elastic deformation amount reaches maximum, because friction plate (15) wears, braking effect is bad, and now motor (10) continues to lead to
Crossing the one-way clutch (8) combined drives two-way nut (5) to rotate, i.e., piston (14) and braking clamp body (3) continue relative motion,
Therefore, sealing ring (13) keeps maximum flexibility deflection, and piston (14) overcomes the frictional force between sealing ring (13), with new
Contact surface be engaged with sealing ring (13), i.e., piston (14) is more than sealing ring (13) relative to the displacement of braking clamp body (3)
Maximum flexibility deflection.When releasing braking, motor (10) drives worm-and-wheel gear reversion, one-way clutch (8) separation, sealing
The elastic potential energy release of (13) is enclosed, makes piston (14) and braking clamp body (3) relative motion, drives two-way nut (5) to reversely rotate,
Now sealing ring (13) and piston (14) coordinate positioning with new contact surface, and return displacement is still the maximum of sealing ring (13)
Elastic deformation amount, thus maintain brake clearance and abrasion before it is identical, realize the adjust automatically of brake clearance.
When the transmission reverse efficiency of worm screw (25) and worm gear (24) is zero, motor (10) can be made to drive friction plate (15) pressure
Tight brake disc (16), after reaching parking braking requirement, realize that motor (10) powers off feelings using the auto-lock function of worm-and-wheel gear
Parking braking under condition.
Refer to the attached drawing 3, an alternative embodiment of the invention is described.
The embodiment of accompanying drawing 3 and the embodiment main distinction of accompanying drawing 1 are as follows：
Transmission mechanism is different, is driven in accompanying drawing 1 using worm-and-wheel gear, and worm gear (24) is first for the terminal of transmission mechanism
Part, one-way clutch (8) are arranged between worm gear (24) and two-way nut (5)；Gear mechanism transmission is used in accompanying drawing 3, it is driven
Gear (20) is the final element of transmission mechanism, one-way clutch (8) be arranged on driven gear (20) and two-way nut (5) it
Between.
The stopping means that rubs is different, realizes friction limit function using sealing ring (13) in accompanying drawing 1, utilizes sealing ring (13)
Elastic deformation storage elastic potential energy；Friction limit function is realized using spring (18) and snap ring (17) in accompanying drawing 3, utilizes spring
(18) elastic deformation storage elastic potential energy is produced.
The connected mode of connecting rod is different, connecting rod (6) and left-handed screw (7)/right handed screw (4)/piston in accompanying drawing 3
(14) connected mode between/braking clamp body (3) is elastic connection, during braking operation and releases in braking procedure, passes through
The elastic deformation of junction meets the relative motion requirement between each part.It is hinge connection in the embodiment one of accompanying drawing 1, passes through
Hinge movement meets the job requirement of system.Tie point in accompanying drawing 3 between connecting rod (6) and piston (14)/braking clamp body (3)
Have multiple, tie point in accompanying drawing 1 between connecting rod (6) and piston (14)/braking clamp body (3) only has one in a longitudinal direction
It is individual.
The mode that parking braking function is realized is different, and in accompanying drawing 1, the reverse efficiency using worm-and-wheel gear is zero, directly
The parking braking under motor (10) powering-off state can be realized；In accompanying drawing 3, illustrate and released when being powered using electromagnetic brake (12)
Discharge arbor (11), and locking motor shaft (11) realizes the parking braking mode under motor (10) powering-off state during power-off, is also represented by
Using the parking braking mode of electric-controlled mechanical brake apparatus, when magnet coil (22) is powered, lock pin (23) is by electromagnetism masterpiece
With compression retracteding position spring (21), making lock pin (23) be not in contact with each other with locking wheel (9), the braking or release to brake do not have
Any influence；When needing parking braking, motor (10) driving friction plate (15) compresses brake disc (16), and reaching parking braking will
Ask, then magnet coil (22) powers off, and lock pin (23) inserts the tooth of locking wheel (9) under the elastic force effect of return spring (21)
In, keep parking braking effect, you can realize the parking braking function under motor (10) powering-off state.
As shown in figure 3, there is brake disc (16) in the jaw of braking clamp body (3), there is friction plate the both sides of brake disc (16)
(15), one is mounted on braking clamp body (3), and one is mounted on piston (14), and piston (14) is mounted in caliper by snap ring (17)
On body (3), snap ring (17) pushes the side away from brake disc (16) to by spring (18), and spring (18) is arranged on braking clamp body (3)
On.Have larger frictional force between the contact surface of snap ring (17) and piston (14), when piston (14) displacement spring (18) bullet
When in property deformation range, without relative motion between the contact surface of snap ring (17) and piston (14).The opposite side of piston (14) has two-way
Nut (5), left-handed threaded portion thereon are provided with left-handed screw (7), and right-handed thread part is provided with right handed screw (4), even
Extension bar (6) connection left-handed screw (7) and piston (14), right handed screw (4) and piston (14), left-handed screw (7) and braking clamp body
(3), right handed screw (4) and braking clamp body (3), these connecting rods (6) are symmetrical arranged, and the outer surface of two-way nut (5) is equipped with
One-way clutch (8), one-way clutch (8) connection driven gear (20), driven gear (20) engage with driving gear (19), main
Moving gear (19) is fixedly mounted on motor shaft (11).
During braking operation, motor (10) driving driving gear (19) rotates, and drives driven gear (20) to rotate, now unidirectionally
Clutch (8) combines, and drives two-way nut (5) to rotate, and promotes piston (14) and braking clamp body (3) to move in the opposite direction,
Friction plate corresponding to drive (15) forces the braking effect for brake disc (16), realizing high efficient and reliable from both sides with identical.This
When, snap ring (17) and piston (14) move together, compression spring (18), and elastic deformation occurs for spring (18), store elastic potential energy,
Without relative motion between the contact surface of snap ring (17) and piston (14).When releasing braking operation, motor (10) drives driven gear
(20) rotate backward, now, one-way clutch (8) separation, two-way nut (5) is in free state, the bullet of spring (18) storage
Property potential energy release, make piston (14) and braking clamp body (3) relative motion, drive elasticity of the two-way nut (5) in spring (18)
Potential energy effect is lower to be reversely rotated, and all elements recover initial position.
When friction plate (15) wears, after thickness is thinning, during braking operation, motor (10) by gear mechanism drive unidirectionally from
Clutch (8) combines, and drives two-way nut (5) to rotate, and promotes piston (14) and braking clamp body (3) relative motion, spring (18)
Elastic deformation amount reaches maximum, and snap ring (17) is close to when on the step surface of left side, and because friction plate (15) wears, braking effect is not
Good, now motor (10) drives two-way nut (5) to be rotated further by the one-way clutch (8) of combination, i.e. piston (14) and system
Moving caliper (3) continues relative motion, and therefore, spring (18) keeps maximum flexibility deflection, and piston (14) overcomes and snap ring
(17) frictional force between, it is engaged with new contact surface with snap ring (17).When releasing braking, motor (10) drives gear mechanism
Reversion, one-way clutch (8) separation, the elastic potential energy release of spring (18), make piston (14) and the relative fortune of braking clamp body (3)
It is dynamic, drive two-way nut (5) to rotate, now snap ring (17) and piston (14) coordinate positioning, return displacement with new contact surface
Be still the maximum flexibility deflection of spring (18), thus maintain brake clearance and abrasion before it is identical, realize brake clearance
Adjust automatically.
When needing parking braking, make motor (10) drive friction plate (15) to compress brake disc (16), reach parking braking
It is required that then electromagnetic brake (12) powers off, locking motor shaft (11), keep brake efficiency constant, motor now can be achieved
(10) parking braking function under powering-off state.When electromagnetic brake (12) is powered, motor shaft (11) is discharged, now braking moment
Big I is freely controlled by motor (10).Or electric-controlled mechanical brake apparatus is used, locking wheel is installed on motor shaft (11)
(9), during energization, magnet coil (22) makes lock pin (23) return, during power-off, in the tooth of lock pin (23) insertion locking wheel (9),
Realize the parking braking function under motor (10) powering-off state.
In this embodiment, electric-controlled mechanical brake apparatus can also be acted directly on driving gear (19), or driven gear
(20) on, it can obtain similar parking braking effect.
In the embodiment of accompanying drawing 3, one-way clutch (8) can also be arranged in driving gear (19), or motor shaft
(11) in；In the embodiment of accompanying drawing 1 and accompanying drawing 2, one-way clutch (8) can also be arranged in worm screw (25), as right
It is required that content to be protected needed for 3.
In embodiment three represented by accompanying drawing 4, two-way nut (5) is arranged on braking clamp body (3), can only be along own axes
Direction rotates.Left-handed screw (7) and right handed screw (4) are arranged on two-way nut (5), and connecting rod (6) one end is arranged on left-handed
In screw rod (7)/right handed screw (4), the other end is contacted with piston (14) and can moved on the surface of piston (14).Connection is left
The connecting rod (6) of rotation screw rod (7) and the connecting rod (6) of connection right handed screw (4) are hinged in shaft position.During braking operation, electricity
Machine (10) drives two-way nut (5) to rotate by one-way clutch (8), and now left-handed screw (7) and right handed screw (4) are transported in opposite directions
It is dynamic, make contact point of the connecting rod (6) on piston (14) also move toward one another, promote piston (14) to be moved to the left, while promote double
Moved right together to nut (5) and braking clamp body (3), that is, drive corresponding to friction plate (15) from both sides with identical force to
Brake disc (16), realize the braking effect of high efficient and reliable.Its release braking the course of work, the course of work of parking braking and
Course of work of brake clearance adjustment etc. relatively, repeats no more here with embodiment one, embodiment two.
Transmission mechanism can also use Chain conveyer, V belt translation, planet in addition to using fixed axis gear mechanism, worm-and-wheel gear
Other kinds of drive such as gear drive, friction stopping means can also use other knots in addition to using sealing ring, spring/snap ring
Structure is achieved similar function, and lockable mechanism can also act on lock pin special on other gears or with gear one
On latch ratchet, or the modes such as ratchet and pawl arrangement are installed on motor shaft and realize latch functions.Obviously, described embodiment
Only part of the embodiment of the invention, rather than whole embodiments, based on the embodiment in the present invention, in the art
Other all embodiments that those of ordinary skill is obtained on the premise of no progress creative work, belong to the present invention's
Protection domain.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as employ the inventive concept and technical scheme of the present invention progress various improvement, or it is not improved directly application
In other occasions, within protection scope of the present invention.
Claims (8)
1. a kind of electric mechanical brake-by-wire device, comprising motor, transmission mechanism, one-way clutch, two-way nut, left-handed screw,
Right handed screw, connecting rod, piston, rub stopping means, braking clamp body, brake disc, friction plate；Described friction plate has two panels,
Described brake disc both sides are arranged symmetrically in, one is arranged on described piston, and one is arranged on described braking clamp body；
Described piston is arranged on described braking clamp body via described friction stopping means；Described friction stopping means one
Divide and be fixedly mounted on described braking clamp body, have larger frictional force between another part and described outer surface of piston, work as institute
When having relative displacement between the piston and described braking clamp body stated, because frictional force effect makes in described friction stopping means
Produce elastic potential energy；The input element of transmission mechanism described in described motor connection；The final element of described transmission mechanism
The described one-way clutch of connection, the described two-way nut of described one-way clutch connection, described two-way nut include a left side
Threaded portion and right-handed thread part are revolved, is coordinated respectively with described left-handed screw and described right handed screw；On a described left side
Revolve between screw rod and described piston, between described right handed screw and described piston, described left-handed screw with it is described
Described connecting rod is used to connect between right handed screw and described braking clamp body between braking clamp body, described；Described
The final element motion of transmission mechanism, when described one-way clutch combines, drives described two-way nut rotation, a described left side
Rotation screw rod and described right handed screw are influenceed by described connecting rod, can not be rotated, can only be along the axis of described two-way nut
Direction is moved, and now described left-handed screw and described right handed screw screw in simultaneously, move toward one another, drive described connecting rod
Motion, the described braking clamp body of described connecting rod driving and described piston move in the opposite direction, drive described rub
Brake disc described in pad from two side compressions；
During braking, described motor drives described one-way clutch to move via described transmission mechanism, now described list
Combined to clutch, drive described two-way nut rotation, described left-handed spiral shell is driven by two-way nut-screw transmission mechanism
Bar and described right handed screw screw in simultaneously, drive described connecting rod to move, the described piston of described connecting rod driving and
Described braking clamp body moves in the opposite direction respectively, described friction plate is pressed on described brake disc both sides, obtains
The braking effect of high efficient and reliable, now, there is relative displacement between described piston and described braking clamp body, in described friction
Elastic potential energy is produced in stopping means；When releasing braking, described motor drives described list via described transmission mechanism
To clutch counter motion, now described one-way clutch separates, and the elastic potential energy inside described friction stopping means is made
With making described piston and described braking clamp body relative motion, recover initial position, described in the driving of now described connecting rod
Left-handed screw and described right handed screw screw out simultaneously, described two-way nut rotation, described two-way nut-screw transmission
Mechanism return is to adapt to the relative motion of described piston and described braking clamp body；
After described friction plate has abrasion, thickness thinning, during braking operation, described motor drives via described transmission mechanism
Move described one-way clutch to combine, drive described two-way nut rotation, make described piston and described caliper body phase
To motion, elastic potential energy reaches maximum in described friction stopping means, and because friction plate is thinning, braking effect is bad, now
Described motor works on, and drives described two-way nut to be rotated further, overcome the outer surface of described piston with it is described
Frictional force between friction stopping means, makes described piston and described braking clamp body continue to relatively move, and compresses brake disc,
Obtain reliable efficient braking effect；When releasing braking, the elastic potential energy effect in described friction stopping means, make described
Piston and described braking clamp body relative motion, now described piston is with described friction stopping means with new contact position
It is relatively fixed, realizes the adjust automatically of brake clearance.
2. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that two-way described in being additionally included in
Using circulation spherical structure between nut and described left-handed screw, described right handed screw, to reduce frictional resistance, system is improved
Operating efficiency.
3. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that unidirectional described in being additionally included in
Increase transmission system between clutch and described two-way nut.
4. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that described connecting rod is symmetrically set
Put.
A kind of 5. electric mechanical brake-by-wire device according to claim 1 or claim 4, it is characterised in that described company
Connection between extension bar and described left-handed screw/right handed screw/piston/braking clamp body, can by described connecting rod with
Relative motion between described left-handed screw/right handed screw/piston/braking clamp body meets position during brake operation between part
Change is put, can also be by being connected between described connecting rod and described left-handed screw/right handed screw/piston/braking clamp body
The elastic deformation at place meets the change in location between part during brake operation.
6. a kind of electric mechanical brake-by-wire device according to claim 1 or claim 3, it is characterised in that when described
During the transmission link for being zero without reverse efficiency in transmission mechanism or described transmission system, described motor is realized using lockable mechanism
Parking braking under powering-off state, described lockable mechanism use electromagnetic brake or electric-controlled mechanical brake apparatus, can be logical
Actuated element when disconnecting, powering off when electric in fixed conveyor link, keeps pressure between described friction plate and described brake disc
Size, realize parking braking function；It is zero when being provided with reverse efficiency in described transmission mechanism or described transmission system
During transmission link, parking braking can be realized using described lockable mechanism, can also be zero using reverse efficiency, power and motion
Can not back transfer, realize the parking braking under described motor powering-off state.
7. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that also including described two-way spiral shell
Mother is arranged on described braking clamp body, only right handed screw between described left-handed screw and described piston, described and
Described connecting rod is set between described piston；Or described two-way nut is arranged on described piston, only described
Left-handed screw and described braking clamp body between, between described right handed screw and described braking clamp body described company is set
Both frame modes of extension bar.
8. a kind of electric mechanical brake-by-wire device according to claim 1 or claim 7, it is characterised in that also including institute
Contact point between the connecting rod stated and described piston can move on described piston face；Or described connecting rod
Contact point between described braking clamp body can move on described braking clamp body surface.
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| CN201710814660.7A CN107477110B (en) | 2017-08-28 | 2017-08-28 | A kind of electric mechanical brake-by-wire device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710814660.7A CN107477110B (en) | 2017-08-28 | 2017-08-28 | A kind of electric mechanical brake-by-wire device |
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| CN107477110A true CN107477110A (en) | 2017-12-15 |
| CN107477110B CN107477110B (en) | 2019-06-07 |
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| CN201710814660.7A Active CN107477110B (en) | 2017-08-28 | 2017-08-28 | A kind of electric mechanical brake-by-wire device |
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| CN108194535A (en) * | 2018-01-03 | 2018-06-22 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN108204416A (en) * | 2018-01-03 | 2018-06-26 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN108253042A (en) * | 2018-01-03 | 2018-07-06 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN110513409A (en) * | 2019-08-20 | 2019-11-29 | 浙江师范大学 | A kind of brake-by-wire device |
| CN110513410A (en) * | 2019-08-20 | 2019-11-29 | 浙江师范大学 | A kind of hydraulic brake-by-wire device of electric mechanical |
| CN110541898A (en) * | 2019-08-20 | 2019-12-06 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN110552979A (en) * | 2019-08-20 | 2019-12-10 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN110566603A (en) * | 2019-08-20 | 2019-12-13 | 浙江师范大学 | Wire control actuator |
| CN110578760A (en) * | 2019-08-20 | 2019-12-17 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN110594319A (en) * | 2019-08-20 | 2019-12-20 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN114110047A (en) * | 2020-08-31 | 2022-03-01 | 比亚迪股份有限公司 | Return lever type brake caliper and vehicle |
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| CN108194535A (en) * | 2018-01-03 | 2018-06-22 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
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| CN108253042A (en) * | 2018-01-03 | 2018-07-06 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
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| CN110552979A (en) * | 2019-08-20 | 2019-12-10 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
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| CN110513410A (en) * | 2019-08-20 | 2019-11-29 | 浙江师范大学 | A kind of hydraulic brake-by-wire device of electric mechanical |
| CN110566603A (en) * | 2019-08-20 | 2019-12-13 | 浙江师范大学 | Wire control actuator |
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| CN110594319A (en) * | 2019-08-20 | 2019-12-20 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN110513409A (en) * | 2019-08-20 | 2019-11-29 | 浙江师范大学 | A kind of brake-by-wire device |
| CN110566603B (en) * | 2019-08-20 | 2021-02-02 | 浙江师范大学 | Wire control actuator |
| CN114110047A (en) * | 2020-08-31 | 2022-03-01 | 比亚迪股份有限公司 | Return lever type brake caliper and vehicle |
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