CN107448514A - A kind of electric mechanical brake-by-wire device - Google Patents
A kind of electric mechanical brake-by-wire device Download PDFInfo
- Publication number
- CN107448514A CN107448514A CN201710815266.5A CN201710815266A CN107448514A CN 107448514 A CN107448514 A CN 107448514A CN 201710815266 A CN201710815266 A CN 201710815266A CN 107448514 A CN107448514 A CN 107448514A
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- China
- Prior art keywords
- piston
- braking
- clamp body
- handed nut
- reverse
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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, reverse-flighted screw, left-handed nut, right-handed nut, piston, connecting rod, friction stopping means etc..Motor drives one-way clutch to rotate by transmission mechanism, one-way clutch, which combines, drives reverse-flighted screw to rotate, the motion of connecting rod is driven by reverse-flighted screw nut 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：
It is left-handed comprising motor, transmission mechanism, one-way clutch, reverse-flighted screw provided with a kind of electric mechanical brake-by-wire device
Nut, right-handed nut, 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 caliper
On body；Described piston is arranged on described braking clamp body via described friction stopping means；The spacing dress of described friction
Put a part to be fixedly mounted on described braking clamp body, there is larger friction between another part and described outer surface of piston
Power, when having relative displacement between described piston and described braking clamp body, because frictional force effect limits described friction
Elastic potential energy is produced in the device of position；The input element of transmission mechanism described in described motor connection；Described transmission mechanism
The described one-way clutch of final element connection, the described reverse-flighted screw of described one-way clutch connection, described two-way spiral shell
Bar includes left-handed threaded portion and right-handed thread part, coordinates respectively with described left-handed nut and described right-handed nut；
Between described left-handed nut and described piston, between described right-handed nut and described piston, described left-handed nut
Described connecting rod is used to connect between right-handed nut and described braking clamp body between described braking clamp body, described
Connect；The final element motion of described transmission mechanism, when described one-way clutch combines, drives described reverse-flighted screw to turn
Dynamic, described left-handed nut and described right-handed nut are influenceed by described connecting rod, can not be rotated, can only be along described two-way
The axis direction movement of screw rod, now described left-handed nut and described right-handed nut's move toward one another, drive described connection
Bar moves, and the described braking clamp body of described connecting rod driving and described piston move in the opposite direction, drive described
Brake disc described in friction plate from two side compressions；
During braking, described motor drives described one-way clutch to move via described transmission mechanism, now described
One-way clutch combine, drive described reverse-flighted screw to rotate, pass through reverse-flighted screw nut transmission mechanism driving described in a left side
Spin nut and described right-handed nut's move toward one another, 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
Backwards to moving, described reverse-flighted screw rotation, described twin-screw nut passes by described left-handed nut and described right-handed nut
Motivation structure 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 reverse-flighted screw to rotate, 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 reverse-flighted screw 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 reverse-flighted screw and described left-handed nut, described right-handed nut using circulation chou
Structure, to reduce frictional resistance, improve system operating efficiency.
Being additionally included between described one-way clutch and described reverse-flighted screw increases transmission system.
Described connecting rod is symmetrical arranged.
Connection between described connecting rod and described left-handed nut/right-handed nut/piston/braking clamp body, Ke Yitong
The relative motion crossed between described connecting rod and described left-handed nut/right-handed nut/piston/braking clamp body meets brake
Change in location during work between part, can also by described connecting rod and described left-handed nut/right-handed nut/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
It dynamic device, can be disconnected when being powered, actuated element during power-off in fixed conveyor link, 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 reverse-flighted screw to be arranged on described braking clamp body, only in described left-handed nut and described
Described connecting rod is set between right-handed nut and described piston between piston, described；Or described reverse-flighted screw peace
On described piston, only right-handed nut between described left-handed nut 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 front view of the embodiment two of electric mechanical brake-by-wire device of the present invention.
Fig. 3 is a kind of front view of the embodiment three of electric mechanical brake-by-wire device of the present invention.
Fig. 4 is a kind of A direction views of the embodiment three of electric mechanical brake-by-wire device of the present invention.
Fig. 5 is a kind of front view of the example IV of electric mechanical brake-by-wire device of the present invention.
Fig. 6 is a kind of front view of the embodiment five of electric mechanical brake-by-wire device of the present invention.
Explanation is marked in accompanying drawing：1- brake-caliper support 2- guide finger 3- braking clamp body 4- reverse-flighted screw 5- right-handed nuts
6- connecting rod 7- left-handed nut 8- one-way clutch 9- drive plate 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- locking wheel 22- magnet coil 23- lock pin 24- return spring 25- worm screw 26- worm gears
Embodiment
Refer to the attached drawing 1, 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 reverse-flighted screw (4), and left-handed threaded portion thereon is provided with left-handed nut (7), dextrorotation
Threaded portion is provided with right-handed nut (5), connecting rod (6) hinge connection left-handed nut (7) and piston (14), right-handed nut (5)
With piston (14), left-handed nut (7) and braking clamp body (3), right-handed nut (5) and braking clamp body (3), these connecting rods (6)
It is symmetrical arranged, one end of reverse-flighted screw (4) is connected by one-way clutch (8) with drive plate (9), and drive plate (9) is directly connected to
Motor shaft (11), in this embodiment, drive plate (9) is as from motor (10) to the driver one-way clutch (8)
Structure, directly it is driven.
During braking operation, motor (10) band nutating disk (9) rotates, and now one-way clutch (8) combines, and drives two-way spiral shell
Bar (4) is rotated, and left-handed nut (7) and right-handed nut (5) are limited by connecting rod (6), can only be along the axis direction of reverse-flighted screw (4)
Mobile, now, left-handed nut (7) moves down, and right-handed nut (5) moves up, i.e. both move toward one anothers, drives connecting rod
(6) move, promote braking clamp body (3) to move right, piston (14) is to left movement, i.e. piston (14) and braking clamp body (3) is to phase
Anti- direction movement, friction plate (15) corresponding to drive are forced to brake disc (16) from both sides with identical, realize high efficient and reliable
Braking effect.Now, elastic deformation occurs for sealing ring (13), stores elastic potential energy, and sealing ring (13) and piston (14) connect
Without relative motion between contacting surface.When releasing braking operation, motor (10) band nutating disk (9) rotates backward, now, one-way clutch
(8) separate, reverse-flighted screw (4) is in free state, the elastic potential energy release of sealing ring (13) storage, makes piston (14) and braking
Caliper (3) relative motion, connecting rod (6) motion is driven, promotes left-handed nut (7) to move upwards, right-handed nut (5) transports downwards
Dynamic, i.e., both are backwards to moving, and reverse-flighted screw (4) reversely rotates under the elastic potential energy effect in sealing ring (13), all elements
Recover initial position.
When friction plate (15) wears, after thickness is thinning, during braking operation, motor (10) is driven unidirectional by drive plate (9)
Clutch (8) combines, and driving reverse-flighted screw (4) rotates, and promotes 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
One-way clutch (8) the driving reverse-flighted screw (4) combined to be crossed 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) band nutating disk (9) reversion, one-way clutch (8) separation, sealing ring
(13) elastic potential energy release, makes piston (14) and braking clamp body (3) relative motion, drives reverse-flighted screw (4) to reversely rotate, this
When sealing ring (13) and piston (14) positioning is coordinated with new contact surface, return displacement is still the maximum bullet of sealing ring (13)
Property deflection, therefore maintain brake clearance and abrasion before it is identical, realize the adjust automatically of brake clearance.
When needing parking braking, make motor (10) drive friction plate (15) to compress brake disc (16), reach parking braking
It is required that due to the transmission link for being zero without reverse efficiency in the transmission mechanism of the present embodiment, therefore electromagnetic brake can be utilized
(12) motor shaft (11) is discharged when being powered, locking motor shaft (11) during power-off, keeps brake efficiency constant, realizes that motor (10) is disconnected
Parking braking in the case of electricity.Or drive plate (9) or reverse-flighted screw (4) etc. are determined using electric-controlled mechanical brake apparatus
Position, realizes parking braking function, the implementation of this parking braking is not introduced in Fig. 1 of the present embodiment.
Refer to the attached drawing 2, an alternative embodiment of the invention is described.
The embodiment of accompanying drawing 2 and the embodiment main distinction of accompanying drawing 1 are as follows：
Transmission mechanism is different, uses drive plate (9) direct-drive in accompanying drawing 1, one-way clutch (8) is arranged on drive plate
(9) between reverse-flighted screw (4)；Gear mechanism transmission is used in accompanying drawing 2, driven gear (20) is the terminal member of transmission mechanism
Part, one-way clutch (8) are arranged between driven gear (20) and reverse-flighted screw (4).
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 2, utilizes spring
(18) elastic deformation storage elastic potential energy is produced.
The mode that parking braking function is realized is slightly different, in accompanying drawing 1, merely illustrates and is powered using electromagnetic brake (12)
When discharge motor shaft (11), locking motor shaft (11) realizes the parking braking under motor (10) powering-off state during power-off；Accompanying drawing 2
In, except the parking braking mode illustrated using electromagnetic brake (12), also illustrate staying using electric-controlled mechanical brake apparatus
Car mode of braking, when magnet coil (22) is powered, lock pin (23) compression retracteding position spring (24), is made locking by electromagnetic force
Pin (23) is not in contact with each other with locking wheel (21), braking or the no any influence of release on brake；When needing parking braking,
Motor (10) driving friction plate (15) compresses brake disc (16), reaches parking braking requirement, and then magnet coil (22) powers off, lock
Shotpin (23) is inserted in the tooth of locking wheel (21) under the elastic force effect of return spring (24), keeps parking braking effect, you can
Realize the parking braking function under motor (10) powering-off state.
As shown in Fig. 2 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
Screw rod (4), left-handed threaded portion thereon are provided with left-handed nut (7), and right-handed thread part is provided with right-handed nut (5), even
Extension bar (6) hinge connection left-handed nut (7) and piston (14), right-handed nut (5) and piston (14), left-handed nut (7) and braking
Caliper (3), right-handed nut (5) and braking clamp body (3), these connecting rods (6) are symmetrical arranged, the stage casing dress of reverse-flighted screw (4)
There are one-way clutch (8), one-way clutch (8) connection driven gear (20), driven gear (20) engages with driving gear (19),
Driving 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 reverse-flighted screw (4) 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, reverse-flighted screw (4) is in free state, the bullet of spring (18) storage
Property potential energy release, make piston (14) and braking clamp body (3) relative motion, elasticity of the drive reverse-flighted screw (4) 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 driving reverse-flighted screw (4) rotates, 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 reverse-flighted screw (4) 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, reverse-flighted screw (4) rotation is driven, 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)
(21), during energization, magnet coil (22) makes lock pin (23) return, during power-off, the tooth of lock pin (23) insertion locking wheel (21)
In, 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 embodiment three represented by accompanying drawing 3 and accompanying drawing 4, using worm-and-wheel gear as transmission mechanism, one-way clutch
Device (8) is arranged between reverse-flighted screw (4) and worm gear (26), and during braking operation, one-way clutch (8) combines, and is released when braking,
One-way clutch (8) separates, and its braking operation process and brake clearance method of adjustment are identical with the first two embodiment, here not
Repeat again.When using reverse efficiency for zero worm-and-wheel gear, parking braking directly can be realized using worm-and-wheel gear
Function, lockable mechanism, i.e., foregoing electromagnetic brake, electric-controlled mechanical brake apparatus etc. can also be utilized to realize parking braking work(
Energy.
In the embodiment of accompanying drawing 2, one-way clutch (8) can also be arranged in driving gear (19), or motor shaft
(11) in；In the embodiment of accompanying drawing 3 and accompanying drawing 4, 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.
Example IV and the main distinction of embodiment one of accompanying drawing 1 represented by accompanying drawing 5 is as follows：In accompanying drawing 5 connecting rod (6) with
Connected mode between left-handed nut (7)/right-handed nut (5)/piston (14)/braking clamp body (3) is elastic connection, braking operation
During and release braking procedure in, the relative motion requirement between each part is met by the elastic deformation of junction.Accompanying drawing 1
Embodiment one in be hinge connection, the job requirement of system is met by hinge movement.Connecting rod (6) and piston in accompanying drawing 5
(14) tie point between/braking clamp body (3) have it is multiple, in accompanying drawing 1 between connecting rod (6) and piston (14)/braking clamp body (3)
Tie point in a longitudinal direction only have one.Accompanying drawing 5 and the design feature and the course of work of the other parts in accompanying drawing 1 are basic
It is identical, repeat no more here.
In embodiment five represented by accompanying drawing 6, reverse-flighted screw (4) is arranged on braking clamp body (3), can only be around own axes
Direction rotates.Left-handed nut (7) and right-handed nut (5) are arranged on reverse-flighted screw (4), and connecting rod (6) one end is arranged on left-handed
On nut (7)/right-handed nut (5), 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 spin nut (7) and the connecting rod (6) of connection right-handed nut (5) are hinged in shaft position.During braking operation, electricity
Machine (10) drives reverse-flighted screw (4) to rotate by one-way clutch (8), and now left-handed nut (7) and right-handed nut (5) transport 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 screw rod (4) 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, example IV.
Transmission mechanism can also use Chain conveyer, band in addition to using direct-drive, fixed axis gear mechanism, worm-and-wheel gear
Other kinds of drive such as transmission, Planetary Gear Transmission, friction stopping means can also be adopted in addition to using sealing ring, spring/snap ring
Similar function is achieved with other structures, and lockable mechanism lock pin can also be acted on other gears or and gear
On the special latch ratchet of one, or the modes such as ratchet and pawl arrangement are installed on motor shaft and realize latch functions.Obviously, retouched
The embodiment stated is only the part of the embodiment of the present invention, rather than whole embodiments, based on the embodiment in the present invention,
Other all embodiments that one of ordinary skilled in the art is obtained on the premise of no progress creative work, all belong to
In protection scope of the present invention.
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, reverse-flighted screw, left-handed nut,
Right-handed nut, 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 reverse-flighted screw of described one-way clutch connection, described reverse-flighted screw include a left side
Threaded portion and right-handed thread part are revolved, is coordinated respectively with described left-handed nut and described right-handed nut；On a described left side
Between right-handed nut and described piston between spin nut and described piston, described, described left-handed nut with it is described
Described connecting rod is used to connect between right-handed nut 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 reverse-flighted screw to rotate, a described left side
Spin nut and described right-handed nut are influenceed by described connecting rod, can not be rotated, can only be along the axis of described reverse-flighted screw
Direction is moved, and now described left-handed nut and described right-handed nut's move toward one another, drives described connecting rod to move, described
The described braking clamp body of connecting rod driving and described piston move in the opposite direction, drive described friction plate from both sides
Compress described brake disc；
During braking, described motor drives described one-way clutch to move via described transmission mechanism, now described list
Combined to clutch, drive described reverse-flighted screw to rotate, described left-handed spiral shell is driven by reverse-flighted screw nut transmission mechanism
Female and described right-handed nut's move toward one another, drives 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 nut and described right-handed nut backwards to move, described reverse-flighted screw rotation, described reverse-flighted screw nut 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 reverse-flighted screw to rotate, 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 reverse-flighted screw 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 screw rod and described left-handed nut, described right-handed nut, 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 reverse-flighted screw.
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 nut/right-handed nut/piston/braking clamp body, can by described connecting rod with
Relative motion between described left-handed nut/right-handed nut/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 nut/right-handed nut/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
Disconnected when electric, actuated element during power-off in fixed conveyor link, keep 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
Bar is arranged on described braking clamp body, only right-handed nut between described left-handed nut and described piston, described and
Described connecting rod is set between described piston；Or described reverse-flighted screw is arranged on described piston, only described
Left-handed nut and described braking clamp body between, between described right-handed nut 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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| CN201710815266.5A CN107448514B (en) | 2017-08-28 | 2017-08-28 | A kind of electric mechanical brake-by-wire device |
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| CN201710815266.5A CN107448514B (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 |
| CN108952155A (en) * | 2018-07-27 | 2018-12-07 | 重庆华硕建设有限公司 | Concrete-pouring template bracket |
| CN109700660A (en) * | 2018-12-26 | 2019-05-03 | 张磊 | A kind of department of anesthesia's treated with medicaments device |
| CN110486393A (en) * | 2019-07-27 | 2019-11-22 | 浙江师范大学 | A kind of self energizing effort 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 |
| CN110762133A (en) * | 2018-07-25 | 2020-02-07 | 现代自动车株式会社 | Wear compensation device for clutch actuator |
| CN112519728A (en) * | 2020-12-09 | 2021-03-19 | 南京信息职业技术学院 | Brake device of unmanned locomotive |
| CN113027946A (en) * | 2021-03-15 | 2021-06-25 | 宜宾职业技术学院 | Braking device for new energy automobile |
| CN114321224A (en) * | 2021-12-20 | 2022-04-12 | 北京银河方圆科技有限公司 | Brake system for medical instrument |
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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 |
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| CN110762133B (en) * | 2018-07-25 | 2022-03-01 | 现代自动车株式会社 | Wear compensation device for clutch actuator |
| CN110762133A (en) * | 2018-07-25 | 2020-02-07 | 现代自动车株式会社 | Wear compensation device for clutch actuator |
| CN108952155A (en) * | 2018-07-27 | 2018-12-07 | 重庆华硕建设有限公司 | Concrete-pouring template bracket |
| CN109700660A (en) * | 2018-12-26 | 2019-05-03 | 张磊 | A kind of department of anesthesia's treated with medicaments device |
| CN110486393A (en) * | 2019-07-27 | 2019-11-22 | 浙江师范大学 | A kind of self energizing effort 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 |
| CN112519728A (en) * | 2020-12-09 | 2021-03-19 | 南京信息职业技术学院 | Brake device of unmanned locomotive |
| CN113027946A (en) * | 2021-03-15 | 2021-06-25 | 宜宾职业技术学院 | Braking device for new energy automobile |
| CN113027946B (en) * | 2021-03-15 | 2022-08-02 | 宜宾职业技术学院 | Braking device for new energy automobile |
| CN114321224A (en) * | 2021-12-20 | 2022-04-12 | 北京银河方圆科技有限公司 | Brake system for medical instrument |
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