CN107477110B - A kind of electric mechanical brake-by-wire device - Google Patents
A kind of electric mechanical brake-by-wire device Download PDFInfo
- Publication number
- CN107477110B CN107477110B CN201710814660.7A CN201710814660A CN107477110B CN 107477110 B CN107477110 B CN 107477110B CN 201710814660 A CN201710814660 A CN 201710814660A CN 107477110 B CN107477110 B CN 107477110B
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- China
- Prior art keywords
- piston
- braking
- clamp body
- handed screw
- braking clamp
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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 limiting devices etc..Motor drives one-way clutch rotation by transmission mechanism, one-way clutch, which combines, drives two-way nut rotation, the movement 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 two sides with identical power, realizes efficient braking effect.The configuration of the present invention is simple, reliable operation, braking efficiency is high, can automatically adjust brake clearance, and compensation is influenced as caused by friction disc wear, the design of simplified control system can be used for service brake and parking braking.
Description
Technical field
The present invention relates to brake fields, 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 two sides with identical pressure, while it is adjustable to may be implemented brake clearance, braking
The adjustable line traffic control mechanical brake of intensity, refers in particular to a kind of electric mechanical brake-by-wire device.
Background technique
Brake-by-wire technology is a kind of novel braking technology occurred in recent years, between brake and brake pedal not
It is realized by the information control motor work of control system receiving sensor for automobile by mechanical or fluid power connection
Reliable and stable control for brake.Mainly there are electro-hydraulic formula braking system (EHB) and mechanical type brake system electric at present
(EMB) two kinds.Line control brake system is conducive 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.
For electro-hydraulic formula braking system (EHB) from traditional brake fluid system transformation, braking process is rapider,
Stablize, improves the braking safety and comfort of automobile, but due to remaining hydraulic unit, do not have complete brake-by-wire
The all advantages of system are often viewed as the earlier product of one kind of mechanical type brake system electric (EMB).
Mechanical type brake system electric (EMB) realizes braking process by motor drive machinery mechanism, enormously simplifies system
The structure of dynamic system, makes brake more easily arrange, assemble and overhauls.But existing mechanical type brake system electric due to
Often lack the function of brake clearance automatic adjustment in part brake, makes brake in external environmental change and friction plate
The problem for causing brake actuator efficiency change indefinite in the case where abrasion, to bring certain be stranded to brake efficiency control
It is difficult.Meanwhile the problems such as that there are structures is more complicated for most of brake, and installation dimension is larger.
Summary of the invention
It is an object of the invention to propose a kind of electric mechanical brake-by-wire device.The present invention has structure simple, and work can
By the advantages that, can be realized the automatic adjustment of brake clearance, by detect friction plate driving mechanism displacement or corner
Conversion obtains braking clamping force size, to enable the corresponding simplification of control system.
Realize that the technical solution of the object of the invention is as follows:
A kind of electric mechanical brake-by-wire device includes piston, braking clamp body, brake disc, friction plate；The friction plate has
Two panels is arranged symmetrically in the brake disc two sides, and one is mounted on the piston, and one is mounted on the braking
On caliper；It further include motor, transmission mechanism, one-way clutch, two-way nut, left-handed screw, right handed screw, connecting rod, friction
Limiting device, the piston are mounted on the braking clamp body via the friction limiting device；The friction limit
Position device a part is fixedly mounted on the braking clamp body, is had between another part and the outer surface of piston biggish
Frictional force, when having relative displacement between the piston and the braking clamp body, since frictional force effect makes described rub
It wipes and generates elastic potential energy in limiting device；The input element of the motor connection transmission mechanism；The driver
The final element connection of the structure one-way clutch, the one-way clutch connection two-way nut, described is double
Include left-handed threaded portion and right-handed thread part to nut, matches respectively with the left-handed screw and the right handed screw
It closes；Between the left-handed screw and the piston, between the right handed screw and the piston, the left side
Between rotation screw rod and the braking clamp body, the company is all made of between the right handed screw and the braking clamp body
Extension bar connection；The final element of the transmission mechanism moves, and when the one-way clutch combines, drives described two-way
Nut rotation, the left-handed screw and the right handed screw are influenced by the connecting rod, can not be rotated, can only be along institute
The axis direction for the two-way nut stated is mobile, and the left-handed screw and the right handed screw screw in simultaneously at this time, opposite to transport
It is dynamic, drive the connecting rod to move, the connecting rod drives the braking clamp body and the piston to opposite side
To movement, drive the friction plate from brake disc described in two side compressions；
When braking, the motor is moved via the transmission mechanism driving one-way clutch, described at this time
One-way clutch combine, drive the two-way nut rotate, pass through two-way nut-screw transmission mechanism driving described in a left side
Rotation screw rod and the right handed screw screw in simultaneously, and the connecting rod is driven to move, the connecting rod driving work
Plug and the braking clamp body move in the opposite direction respectively, and the friction plate is made to be pressed on the brake disc two sides,
The braking effect of high efficient and reliable is obtained, at this point, having relative displacement between the piston and the braking clamp body, described
Friction limiting device in generate elastic potential energy；When releasing braking, the motor drives institute via the transmission mechanism
The one-way clutch counter motion stated, the one-way clutch separates at this time, the elasticity inside the friction limiting device
Potential energy effect, makes the piston and the braking clamp body relative motion, restores initial position, at this time the connecting rod
The driving left-handed screw and the right handed screw screw out simultaneously, the two-way nut rotation, the two-way nut
Screw drive mechanism return is to adapt to the relative motion of the piston and the braking clamp body；
When the friction plate have abrasion, thickness it is thinning after, when braking operation, the motor is via the driver
The structure driving one-way clutch combines, and drives the two-way nut to rotate, makes the piston and the caliper
Body relative motion, elastic potential energy reaches maximum in the friction limiting device, and since friction plate is thinning, braking effect is bad,
The motor works at this time, drives the two-way nut to continue to rotate, overcomes outer surface and the institute of the piston
The frictional force between friction limiting device stated, makes the piston and the braking clamp body continue to relatively move, compresses system
Moving plate obtains reliable efficient braking effect；When releasing braking, the elastic potential energy in the friction limiting device is acted on, and is made
The piston and the braking clamp body relative motion, the piston and the friction limiting device are at this time with new
Contact position is relatively fixed, realizes the adjust automatically of brake clearance.
It further include between the two-way nut and the left-handed screw, the right handed screw using circulation chou
Structure improves system working efficiency to reduce frictional resistance.
It further include increasing transmission system between the one-way clutch and the two-way nut.
The connecting rod is symmetrical arranged.
Connection between the connecting rod and the left-handed screw/right handed screw/piston/braking clamp body, Ke Yitong
The relative motion crossed between the connecting rod and the left-handed screw/right handed screw/piston/braking clamp body, which meets, brakes
Change in location when device works between component can also pass through the connecting rod and the left-handed screw/right handed screw/work
The change in location when flexible deformation of junction meets brake operation between plug/braking clamp body between component.
When the transmission link for being zero without reverse efficiency in the transmission mechanism or the transmission system, using locking machine
Structure realizes the parking braking under the motor power blackout situation, and the lockable mechanism uses electromagnetic brake or electric-controlled mechanical
Brake apparatus, can be disconnected when being powered, power-off when fixed conveyor link in actuated element, keep the friction plate and
The size of pressure between the brake disc realizes parking braking function；When in the transmission mechanism or the transmission system
When being provided with the transmission link that reverse efficiency is zero, it can use the lockable mechanism and realize parking braking, also can use inverse
Efficiency is zero, power and movement can not back transfer, realize the parking braking under the motor power blackout situation.
It further include that the two-way nut is mounted on the braking clamp body, only in the left-handed screw and described
The connecting rod is set between the right handed screw and the piston between piston, described；Or the two-way nut peace
On the piston, only between the left-handed screw and the braking clamp body, the right handed screw and described
Braking clamp body between described both frame modes of connecting rod are set.
The contact point between connecting rod and the piston described in further including can move on the piston face；
Or the contact point between the connecting rod and the braking clamp body can move on the braking clamp body surface.
Detailed description of the invention
Fig. 1 is a kind of main view of the embodiment one of electric mechanical brake-by-wire device of the invention.
Fig. 2 is a kind of A direction view of the embodiment one of electric mechanical brake-by-wire device of the invention.
Fig. 3 is a kind of main view of the embodiment two of electric mechanical brake-by-wire device of the invention.
Fig. 4 is a kind of main view of the embodiment three of electric mechanical brake-by-wire device of the invention.
Explanation: the two-way spiral shell of 1- brake-caliper support 2- guide pin 3- braking clamp body 4- right handed screw 5- is marked in attached drawing
Female 6- connecting rod 7- left-handed screw 8- one-way clutch 9- locking wheel 10- motor 11- 12-electromagnetic brake of motor shaft
13- sealing ring 14- piston 15- friction plate 16- brake disc 17- snap ring 18- spring 19- driving gear 20- driven gear
21- return spring 22- electromagnetic coil 23- lock pin 24- 25-worm screw of worm gear
Specific embodiment
With reference to attached drawing 1 and attached 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 pin (2)
Body (3), guide pin (2) are fixed on brake-caliper support (1).There are brake disc (16), brake disc in the jaw of braking clamp body (3)
(16) two sides have friction plate (15), and one is mounted on braking clamp body (3), and one is mounted on piston (14), and piston (14) is logical
Sealing ring (13) are crossed on braking clamp body (3), have biggish frictional force between sealing ring (13) and the contact surface of piston (14),
When the displacement of piston (14) is in the regime of elastic deformation of sealing ring (13), the contact surface of sealing ring (13) and piston (14)
Between without relative motion.The other side of piston (14) has two-way nut (5), and left-handed threaded portion thereon is equipped with left-handed screw
(7), right-handed thread part is equipped with right handed screw (4), and connecting rod (6) hinge connects left-handed screw (7) and piston (14), right
Screw rod (4) and piston (14), left-handed screw (7) and braking clamp body (3), right handed screw (4) and braking clamp body (3) are revolved, these
Connecting rod (6) is symmetrical arranged, and the outer surface of two-way nut (5) is connect by one-way clutch (8) with worm gear (24), with worm gear
(24) worm screw (25) of cooperating is driven by motor (10).
When braking operation, motor (10) drives worm screw (25) and worm gear (24) rotation, and one-way clutch (8) combines at this time,
Two-way nut (5) are 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 is mobile, at this point, left-handed screw (7) moves down, right handed screw (4) is moved up, i.e., the two is revolved simultaneously
Enter two-way nut (5), move toward one another, drive connecting rod (6) movement, push braking clamp body (3) move right, piston (14) to
Left movement, i.e. piston (14) and braking clamp body (3) move in the opposite direction, drive corresponding friction plate (15) from two sides with
It is identical to force to brake disc (16), realize the braking effect of high efficient and reliable.At this point, flexible deformation, storage occur for sealing ring (13)
Elastic potential energy is deposited, without relative motion between sealing ring (13) and the contact surface of piston (14).When releasing braking operation, motor (10)
Worm gear mechanism is driven to rotate backward, at this point, one-way clutch (8) separates, two-way nut (5) is in free state, seals
The elastic potential energy release for enclosing (13) storage, makes piston (14) and braking clamp body (3) relative motion, drives connecting rod (6) movement,
Left-handed screw (7) are pushed to move upwards, right handed screw (4) moves downward, i.e., backwards to moving, two-way nut (5) is sealing the two
The elastic potential energy effect enclosed in (13) is lower to be reversely rotated, and all elements restore initial position.
When friction plate (15) are worn, after thickness is thinning, when braking operation, motor (10) is driven singly by worm gear mechanism
It is combined to clutch (8), two-way nut (5) is driven to rotate, push piston (14) and braking clamp body (3) relative motion, sealing ring
(13) when elastic deformation amount reaches maximum, since friction plate (15) are worn, braking effect is bad, and motor (10) continues at this time
Two-way nut (5) rotation is driven by the one-way clutch (8) of combination, i.e. piston (14) and braking clamp body (3) continues opposite fortune
Dynamic, therefore, sealing ring (13) keeps maximum flexibility deflection, and piston (14) overcomes the frictional force between sealing ring (13),
It is matched with new contact surface with sealing ring (13), i.e., piston (14) is greater than sealing ring relative to the displacement of braking clamp body (3)
(13) maximum flexibility deflection.When releasing braking, motor (10) drives worm gear mechanism reversion, one-way clutch (8) point
From the elastic potential energy release of sealing ring (13) makes piston (14) and braking clamp body (3) relative motion, drives two-way nut (5)
It reversely rotates, sealing ring (13) and piston (14) are cooperated at this time with new contact surface positions, and return displacement is still sealing ring
(13) maximum flexibility deflection, thus maintain brake clearance with abrasion before it is identical, realize the automatic tune of brake clearance
It is whole.
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)
It compresses brake disc (16), after reaching parking braking requirement, realizes that motor (10) power off using the self-locking function of worm gear mechanism
In the case of parking braking.
With reference to attached drawing 3, another embodiment of the invention is described.
The embodiment of attached drawing 3 and the embodiment main distinction of attached drawing 1 are as follows:
Transmission mechanism is different, is driven in attached drawing 1 using worm gear mechanism, and worm gear (24) is the terminal member of transmission mechanism
Part, one-way clutch (8) are mounted between worm gear (24) and two-way nut (5)；Gear mechanism transmission is used in attached drawing 3, from
Moving gear (20) is the final element of transmission mechanism, and one-way clutch (8) is mounted on driven gear (20) and two-way nut (5)
Between.
The limiting device that rubs is different, realizes friction limit function using sealing ring (13) in attached drawing 1, utilizes sealing ring (13)
Flexible deformation store elastic potential energy；Friction limit function is realized using spring (18) and snap ring (17) in attached drawing 3, utilizes bullet
Spring (18) generates flexible deformation and stores elastic potential energy.
The connection type of connecting rod is different, connecting rod (6) and left-handed screw (7)/right handed screw (4)/piston in attached drawing 3
(14) connection type between/braking clamp body (3) is elastic connection, and braking operation passes through in the process and in releasing braking process
The flexible deformation of junction meets the relative motion requirement between each component.It connects, leads to for hinge in the embodiment one of attached drawing 1
Cross the job requirement that hinge movement meets system.Company in attached drawing 3 between connecting rod (6) and piston (14)/braking clamp body (3)
Contact has multiple, and tie point in attached drawing 1 between connecting rod (6) and piston (14)/braking clamp body (3) is in a longitudinal direction only
There is one.
The mode that parking braking function is realized is different, and in attached drawing 1, the reverse efficiency using worm gear mechanism is zero, directly
The parking braking under motor (10) power blackout situation may be implemented；In attached drawing 3, when illustrating using electromagnetic brake (12) energization
It discharges motor shaft (11), locking motor shaft (11) realizes the parking braking mode under motor (10) power blackout situation when power-off, goes back table
The parking braking mode using electric-controlled mechanical brake apparatus is shown, when electromagnetic coil (22) is powered, lock pin (23) is by electromagnetic force
Effect, compression retracteding position spring (21) make lock pin (23) be not in contact with each other with locking wheel (9), do not have to the braking or release of brake
There is any influence；When needing parking braking, motor (10) drives friction plate (15) to compress brake disc (16), reaches parking system
Dynamic to require, then electromagnetic coil (22) powers off, and lock pin (23) is inserted into locking wheel under the elastic force effect of return spring (21)
(9) in tooth, parking braking effect is kept, the parking braking function under motor (10) power blackout situation can be realized.
As shown in figure 3, there is brake disc (16) in the jaw of braking clamp body (3), there are friction plate in the two 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 far from brake disc (16) to by spring (18), and spring (18) is mounted on braking clamp body (3)
On.Have biggish frictional force between snap ring (17) and the contact surface of piston (14), when piston (14) displacement spring (18) bullet
When in property deformation range, without relative motion between snap ring (17) and the contact surface of piston (14).The other side of piston (14) has two-way
Nut (5), left-handed threaded portion thereon are equipped with left-handed screw (7), and right-handed thread part is equipped with right handed screw (4), even
Extension bar (6) connects 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) connect driven gear (20), and driven gear (20) is engaged with driving gear (19),
Driving gear (19) is fixedly mounted on motor shaft (11).
When braking operation, motor (10) drives driving gear (19) rotation, drives driven gear (20) rotation, single at this time
It is combined to clutch (8), two-way nut (5) is driven to rotate, piston (14) and braking clamp body (3) is pushed to move in the opposite direction
It is dynamic, drive corresponding friction plate (15) to realize that the braking of high efficient and reliable is imitated to brake disc (16) from two sides with identical force
Fruit.At this point, snap ring (17) and piston (14) move together, flexible deformation occurs for compressed spring (18), spring (18), stores bullet
Property potential energy, without relative motion between snap ring (17) and the contact surface of piston (14).Release braking operation when, motor (10) drive from
Moving gear (20) rotates backward, at this point, one-way clutch (8) separates, two-way nut (5) is in free state, spring (18) storage
The elastic potential energy release deposited, makes piston (14) and braking clamp body (3) relative motion, drives two-way nut (5) in spring (18)
Elastic potential energy effect it is lower reversely rotate, all elements restore initial positions.
When friction plate (15) are worn, after thickness is thinning, when braking operation, motor (10) by gear mechanism drive unidirectionally from
Clutch (8) combines, and two-way nut (5) is driven to rotate, and pushes 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, since friction plate (15) are worn, braking effect
Bad, motor (10) drives two-way nut (5) to continue to rotate by the one-way clutch (8) combined at this time, i.e., piston (14) and
Braking clamp body (3) continues relative motion, and therefore, spring (18) keeps maximum flexibility deflection, and piston (14) overcomes and snap ring
(17) frictional force between is matched with new contact surface with snap ring (17).When releasing braking, motor (10) drives gear mechanism
Structure reversion, one-way clutch (8) separation, the elastic potential energy release of spring (18) keep piston (14) and braking clamp body (3) opposite
Movement drives two-way nut (5) to rotate, and snap ring (17) and piston (14) are cooperated at this time with new contact surface positions, return displacement
Amount is still the maximum flexibility deflection of spring (18), thus maintain brake clearance with abrasion before it is identical, realize brake cabin
The adjust automatically of gap.
When needing parking braking, so that motor (10) driving friction plate (15) is compressed brake disc (16), reach parking braking
It is required that then electromagnetic brake (12) powers off, locking motor shaft (11) keeps brake efficiency constant, motor can be realized at this time
(10) parking braking function under power blackout situation.It when electromagnetic brake (12) is powered, discharges motor shaft (11), braking turns at this time
Square size can freely be controlled by motor (10).Or electric-controlled mechanical brake apparatus is used, locking wheel is installed on motor shaft (11)
(9), when energization, electromagnetic coil (22) makes lock pin (23) return, and when power-off, lock pin (23) is inserted into the tooth of locking wheel (9)
In, realize the parking braking function under motor (10) power blackout situation.
In this embodiment, electric-controlled mechanical brake apparatus can also act directly on driving gear (19) or driven gear
(20) on, similar parking braking effect can be obtained.
In the embodiment of attached drawing 3, one-way clutch (8) can also be arranged in driving gear (19) or motor shaft
(11) in；In the embodiment of attached drawing 1 and attached 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 attached drawing 4, two-way nut (5) is mounted on braking clamp body (3), can only be along own axes
Direction rotation.Left-handed screw (7) and right handed screw (4) are mounted on two-way nut (5), and connecting rod (6) one end is mounted on left-handed
In screw rod (7)/right handed screw (4), the other end is contacted with piston (14) and can be moved on the surface of piston (14).Connection
The connecting rod (6) of left-handed screw (7) and the connecting rod (6) for connecting right handed screw (4) are hinged in shaft position.When braking operation,
Motor (10) drives two-way nut (5) rotation by one-way clutch (8), at this time left-handed screw (7) and right handed screw (4) phase
It to movement, moves toward one another contact point of the connecting rod (6) on piston (14) also, pushes piston (14) to be moved to the left, push away simultaneously
It moves two-way nut (5) and braking clamp body (3) moves right together, that is, drive corresponding friction plate (15) from two sides with identical
It forces to brake disc (16), realizes the braking effect of high efficient and reliable.Its work for releasing course of work, parking braking for braking
Relatively with embodiment one, embodiment two, which is not described herein again for process and the course of work of brake clearance adjustment etc..
Transmission mechanism can also use chain conveyer, V belt translation, planet in addition to using fixed axis gear mechanism, worm gear mechanism
Other kinds of drive such as gear drive, friction limiting device can also be using others in addition to using sealing ring, spring/snap ring
Structure is achieved similar function, lockable mechanism lock pin can also be acted on other gears or with gear one
On dedicated latch ratchet, or the modes such as ratchet and pawl arrangement are installed on motor shaft and realize latch functions.Obviously, described
Embodiment is only a part of the embodiments of the present invention, instead of all the embodiments, based on the embodiments of the present invention, this
Those of ordinary skill in field other all embodiments obtained under 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 attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved direct application
It is within the scope of the present invention in other occasions.
Claims (8)
1. a kind of electric mechanical brake-by-wire device includes piston, braking clamp body, brake disc, friction plate；The friction plate has two
Piece is arranged symmetrically in the brake disc two sides, and one is mounted on the piston, and one is mounted on the braking clamp body
On；It is characterized by also including motor, transmission mechanism, one-way clutch, two-way nut, left-handed screw, right handed screw, connections
Bar, rub limiting device, and the piston is mounted on the braking clamp body via the friction limiting device；Described
Friction limiting device a part is fixedly mounted on the braking clamp body, have between another part and the outer surface of piston compared with
Big frictional force, when having relative displacement between the piston and the braking clamp body, described in frictional force effect makes
Friction limiting device in generate elastic potential energy；The input element of the motor connection transmission mechanism；The biography
The final element connection of the motivation structure one-way clutch, the one-way clutch connection two-way nut are described
Two-way nut include left-handed threaded portion and right-handed thread part, respectively with the left-handed screw and the right handed screw
Cooperation；Between the left-handed screw and the piston, between the right handed screw and the piston, the left side
Between rotation screw rod and the braking clamp body, the connection is all made of between the right handed screw and the braking clamp body
Bar connection；The final element of the transmission mechanism moves, and when the one-way clutch combines, drives the two-way nut
Rotation, the left-handed screw and the right handed screw are influenced by the connecting rod, can not be rotated, can only be along pair
Mobile to the axis direction of nut, the left-handed screw and the right handed screw screw in simultaneously at this time, move toward one another, and drive
The connecting rod movement, the connecting rod driving braking clamp body and the piston move in the opposite direction,
Drive the friction plate from brake disc described in two side compressions；
When braking, the motor is moved via the transmission mechanism driving one-way clutch, at this time the list
It is combined to clutch, the two-way nut is driven to rotate, pass through the two-way nut-screw transmission mechanism driving left-handed spiral shell
Bar and the right handed screw screw in simultaneously, and the connecting rod is driven to move, the described connecting rod driving piston and
The braking clamp body moves in the opposite direction respectively, so that the friction plate is pressed on the brake disc two sides, obtains
The braking effect of high efficient and reliable, at this point, having relative displacement between the piston and the braking clamp body, in the friction
Elastic potential energy is generated in limiting device；When releasing braking, the motor list described via the transmission mechanism driving
To clutch counter motion, the one-way clutch is separated at this time, and the elastic potential energy inside the friction limiting device is made
With making the piston and the braking clamp body relative motion, restore initial position, described in connecting rod driving at this time
Left-handed screw and the right handed screw screw out simultaneously, the described two-way nut rotation, the two-way nut-screw transmission
Mechanism return is to adapt to the relative motion of the piston and the braking clamp body；
When the friction plate have abrasion, thickness it is thinning after, when braking operation, the motor drives via the transmission mechanism
It moves the one-way clutch to combine, drives the two-way nut to rotate, make the piston and the braking clamp body phase
To movement, elastic potential energy reaches maximum in the friction limiting device, and since friction plate is thinning, braking effect is bad, at this time
The motor works on, and the two-way nut is driven to continue to rotate, and overcomes the outer surface of the piston and described
Frictional force between friction limiting device, makes the piston and the braking clamp body continue to relatively move, and compresses brake disc,
Obtain reliable efficient braking effect；When releasing braking, the elastic potential energy in the friction limiting device is acted on, and is made described
Piston and the braking clamp body relative motion, the piston and the friction limiting device are at this time with new contact position
It is relatively fixed, realize 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 further include described two-way
System is improved to reduce frictional resistance using circulation spherical structure between nut and the left-handed screw, the right handed screw
Working efficiency.
3. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that further include described unidirectional
Increase transmission system between clutch and the two-way nut.
4. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that the connecting rod is symmetrically set
It sets.
5. according to claim 1 or a kind of electric mechanical brake-by-wire device as claimed in claim 4, it is characterised in that the company
Connection between extension bar and the left-handed screw/right handed screw/piston/braking clamp body, can by the connecting rod with
Position when relative motion between the left-handed screw/right handed screw/piston/braking clamp body meets brake operation between component
Variation is set, it can also be by being connected between the connecting rod and the left-handed screw/right handed screw/piston/braking clamp body
The change in location when flexible deformation at place meets brake operation between component.
6. according to claim 1 or a kind of electric mechanical brake-by-wire device as claimed in claim 3, it is characterised in that when described
When the transmission link for being zero without reverse efficiency in transmission mechanism or the transmission system, the motor is realized using lockable mechanism
Parking braking under power blackout situation, the 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 the friction plate and the brake disc
Size, realize parking braking function；It is zero when being provided with reverse efficiency in the transmission mechanism or the transmission system
When transmission link, can use the lockable mechanism and realize parking braking, also can use reverse efficiency be zero, power and movement
Can not back transfer, realize the parking braking under the motor power blackout situation.
7. a kind of electric mechanical brake-by-wire device according to claim 1, it is characterised in that further include the two-way spiral shell
Mother is mounted on the braking clamp body, only between the left-handed screw and the piston, the right handed screw and
The connecting rod is set between the piston；Or the two-way nut is mounted on the piston, only described
Left-handed screw and the braking clamp body between, the company is set between the right handed screw and the braking clamp body
Both frame modes of extension bar.
8. according to claim 1 or a kind of electric mechanical brake-by-wire device as claimed in claim 7, it is characterised in that further include institute
Contact point between the connecting rod stated and the piston can move on the piston face；Or the connecting rod
Contact point between the braking clamp body can move on the braking clamp body surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN107477110A CN107477110A (en) | 2017-12-15 |
| CN107477110B true 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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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253042B (en) * | 2018-01-03 | 2020-05-26 | 浙江师范大学 | Electronic mechanical brake-by-wire |
| CN114658772A (en) * | 2018-01-03 | 2022-06-24 | 浙江师范大学 | Electronic mechanical line control brake with more stable transmission characteristic |
| CN108194535B (en) * | 2018-01-03 | 2022-04-22 | 浙江师范大学 | Electronic mechanical brake-by-wire |
| CN110566603B (en) * | 2019-08-20 | 2021-02-02 | 浙江师范大学 | Wire control actuator |
| CN110594319A (en) * | 2019-08-20 | 2019-12-20 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN110578760A (en) * | 2019-08-20 | 2019-12-17 | 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 |
| CN110552979A (en) * | 2019-08-20 | 2019-12-10 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| CN110541898A (en) * | 2019-08-20 | 2019-12-06 | 浙江师范大学 | Electronic mechanical hydraulic line control brake |
| 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 |
| CN114110047B (en) * | 2020-08-31 | 2023-05-05 | 比亚迪股份有限公司 | Return lever type brake caliper and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
| CN202149166U (en) * | 2011-07-06 | 2012-02-22 | 隆中控股集团有限公司 | Automatic clearance adjusting mechanism of automobile pressure disc brake |
| EP2465741A1 (en) * | 2010-12-20 | 2012-06-20 | Robert Bosch GmbH | Electric servo assisted brake system |
| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN104019163A (en) * | 2014-06-28 | 2014-09-03 | 枣庄泰德机械有限公司 | Chassis type automatic brake gap adjusting mechanism of commercial vehicle |
-
2017
- 2017-08-28 CN CN201710814660.7A patent/CN107477110B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
| EP2465741A1 (en) * | 2010-12-20 | 2012-06-20 | Robert Bosch GmbH | Electric servo assisted brake system |
| CN202149166U (en) * | 2011-07-06 | 2012-02-22 | 隆中控股集团有限公司 | Automatic clearance adjusting mechanism of automobile pressure disc brake |
| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN104019163A (en) * | 2014-06-28 | 2014-09-03 | 枣庄泰德机械有限公司 | Chassis type automatic brake gap adjusting mechanism of commercial vehicle |
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| CN107477110A (en) | 2017-12-15 |
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