CN107448521A - A kind of floating caliper type disc brake-by-wire device - Google Patents
A kind of floating caliper type disc brake-by-wire device Download PDFInfo
- Publication number
- CN107448521A CN107448521A CN201710505966.4A CN201710505966A CN107448521A CN 107448521 A CN107448521 A CN 107448521A CN 201710505966 A CN201710505966 A CN 201710505966A CN 107448521 A CN107448521 A CN 107448521A
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- China
- Prior art keywords
- braking
- piston
- way clutch
- handed screw
- brake
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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
- F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
- F16D67/02—Clutch-brake combinations
- F16D67/06—Clutch-brake combinations electromagnetically actuated
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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
- F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
- F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
- F16D65/568—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake for synchronous adjustment of actuators arranged in parallel
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/005—Force, torque, stress or strain
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to a kind of floating caliper type disc brake-by-wire device, including motor, transmission mechanism, one-way clutch, two-way nut, left-handed screw, right handed screw, piston, friction stopping means etc..Motor drives the outer ring of one-way clutch to rotate by transmission mechanism, one-way clutch drives two-way nut rotation, drive piston and braking clamp body to move in the opposite direction respectively by bidirectional helical mechanism, 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 floating caliper type disc 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 floating caliper type disc 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, two-way nut provided with a kind of floating caliper type disc brake-by-wire device
Screw rod, right handed screw, piston, rub stopping means, piston positioning means, braking clamp body, brake disc, friction plate；Described is double
It is left hand thread to nut one end, is engaged with left-handed screw, one end is right-handed thread, is engaged with right handed screw；Described
Friction plate has two panels, is arranged symmetrically in described brake disc both sides, and one is arranged on described piston, and one installed in described
Braking clamp body on；Described piston is arranged on described braking clamp body via described friction stopping means, described work
Plug positioner makes piston to be moved back and forth in axis direction, can not rotate；Described left-handed screw and described dextrorotation spiral shell
Bar is fixedly mounted with described piston and described braking clamp body respectively；The outer surface of described two-way nut is as described list
To the inner ring of clutch, the outer ring of described one-way clutch is fixedly connected with the final element of described transmission mechanism；It is described
Transmission mechanism final element motion, drive described one-way clutch outer ring rotate, one-way clutch combination, described in drive
Two-way nut rotation when, described left-handed screw and described right handed screw screw out simultaneously；Described in described motor connection
The input element of transmission mechanism；A described friction stopping means part is fixedly mounted on described braking clamp body, another portion
Point there is larger frictional force between described outer surface of piston, when there is relative position between described piston and described braking clamp body
During shifting, because frictional force effect makes to produce elastic potential energy in described friction stopping means；
During braking, described motor drives described one-way clutch outer ring to move via described transmission mechanism, unidirectionally
Clutch combines, and drives described two-way nut rotation, and described left-handed screw and described right handed screw screw out simultaneously, drives
Described piston and described braking clamp body move in the opposite direction respectively, described friction plate is pressed on described braking
Disk both sides, the braking effect of high efficient and reliable is obtained, now, has relative displacement between described piston and described braking clamp body,
Elastic potential energy is produced in described friction stopping means；When releasing braking, described motor is via described transmission mechanism
The described one-way clutch outer ring counter motion of driving, one-way clutch separate, the elasticity inside described friction stopping means
Potential energy acts on, and makes described piston and described braking clamp body relative motion, recovers initial position, now described two-way nut
Rotation makes described left-handed screw and described right handed screw while screwed in；
After described friction plate has abrasion, thickness thinning, during braking operation, described motor is via described driver
The described one-way clutch of structure driving combines, and drives described two-way nut rotation, makes described piston and described caliper
Body relatively moves, and elastic potential energy reaches maximum in described friction stopping means, and because friction plate is thinning, braking effect is bad,
Now described motor works on, and drives described two-way nut to be rotated further, and overcomes outer surface and the institute of described piston
Frictional force between the friction stopping means stated, makes described piston and described braking clamp body continue to relatively move, compresses system
Moving plate, obtain reliable efficient braking effect；When releasing braking, the elastic potential energy effect in described friction stopping means, make
Described piston and described braking clamp body relative motion, now described piston are connect with described friction stopping means with new
Tactile position is relatively fixed, and realizes the adjust automatically of brake clearance.
It is additionally included between described two-way nut and described left-handed screw, described right handed screw using circulation chou
Structure, to reduce frictional resistance, improve system operating efficiency.
Being additionally included between described one-way clutch and described two-way nut increases transmission system.
Also include the inner ring that the final element of described transmission mechanism is connected to described one-way clutch, described is two-way
The outer ring of the described one-way clutch of nut connection, during braking operation, described one-way clutch combines, when releasing braking, institute
The one-way clutch separation stated.
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.
Brief description of the drawings
Fig. 1 is a kind of front view of the embodiment one of floating caliper type disc brake-by-wire device of the present invention.
Fig. 2 is a kind of A direction views of the embodiment one of floating caliper type disc brake-by-wire device of the present invention.
Fig. 3 is a kind of front view of the embodiment two of floating caliper type disc brake-by-wire device of the present invention.
Fig. 4 is a kind of front view of the embodiment three of floating caliper type disc brake-by-wire device of the present invention.
Explanation is marked in accompanying drawing：The two-way nuts of 1- brake-caliper support 2- guide finger 3- braking clamp body 4- right handed screws 5-
6- worm gear 7- one-way clutch 8- worm screw 9- sealing ring 10- dive key 11- piston 12- friction plate 13- brake discs
At the beginning of 14- motor 15- left-handed screw 16- cylindrical roller 17- spring 18- snap ring 19- motor shaft 20- electromagnetic brakes 21-
The level driving gear 22- primary level driven gear 25- magnet coils of level driving gear 24- times of driven gear 23- times 26- is returned
Position spring 27- lock pins
Embodiment
Refer to the attached drawing 1 and accompanying drawing 2, one embodiment of the present of invention is described in detail.
As depicted in figs. 1 and 2, a kind of floating caliper type disc brake-by-wire device can move comprising one on guide finger (2)
Braking clamp body (3), guide finger (2) are fixed on brake-caliper support (1).There is brake disc (13) in the jaw of braking clamp body (3), make
There is friction plate (12) both sides of Moving plate (13), and one is mounted on braking clamp body (3), and one is mounted on piston (11), piston (11)
By dive key (10) and sealing ring (9) on braking clamp body (3), dive key (10) makes piston (11) can only be along axis
Move in direction, it is impossible to rotate, have larger frictional force between the contact surface of sealing ring (9) and piston (11), when the position of piston (11)
When moving in the regime of elastic deformation of sealing ring (9), without relative motion between the contact surface of sealing ring (9) and piston (11).Piston
(11) left-handed screw (15) is fixedly mounted in one end installation friction plate (12), the other end.Left-handed screw (15) and two-way nut (5)
Left-handed threaded portion coordinate installation, one end of two-way nut (5) be left hand thread, with left-handed screw (15) coordinate installation；Separately
One end is right-handed thread, coordinates with right handed screw (4) and installs, and right handed screw (4) is fixedly mounted on braking clamp body (3).Therefore,
Left-handed screw (15) and right handed screw (4) can not rotate, can only be mobile with piston (11) or braking clamp body (3).Two-way nut
(5) inner ring of the periphery as one-way clutch (7), in the outer ring and Worm and worm-wheel gearing of one-way clutch (7)
Worm gear (6) is fixedly connected, and worm screw (8) is connected with the output shaft of motor (14).
During braking operation, motor (14) drives worm screw (8) to rotate, and drives worm gear (6) underdrive, now one-way clutch
(7) combine, drive two-way nut (5) to rotate, because left-handed screw (15) and right handed screw (4) can not rotate, therefore when single
Combine when driving the two-way nut (5) to rotate, left-handed screw (15) and right handed screw (4) while screwed out to clutch (7), outwards
It is mobile, promote piston (11) and braking clamp body (3) while move in the opposite direction, friction plate corresponding to drive (12) is from both sides
The braking effect for brake disc (13), realizing high efficient and reliable is forced with identical.Now, elastic deformation, storage occur for sealing ring (9)
Elastic potential energy is deposited, without relative motion between the contact surface of sealing ring (9) and piston (11).When releasing braking operation, motor (14) band
Dynamic worm screw (8) rotates backward, and driving worm gear (6) also rotates backward, now, one-way clutch (7) separation, two-way nut (5) place
In free state, the elastic potential energy release of sealing ring (9) storage, make piston (11) and braking clamp body (3) relative motion, drive left
Revolve screw rod (15) and right handed screw (4) while screw in two-way nut (5), i.e., elastic potential of the two-way nut (5) in sealing ring (9)
It can be reversely rotated under effect, all elements recover initial positions.
When friction plate (12) wears, after thickness is thinning, during braking operation, motor (14) passes through worm screw (8), worm gear (6) band
Dynamic one-way clutch (7) combines, and drives two-way nut (5) to rotate, makes left-handed screw (15) and right handed screw (4) while screw out,
Piston (11) and braking clamp body (3) relative motion is promoted, when the elastic deformation amount of sealing ring (9) reaches maximum, due to friction plate
(12) wear, braking effect is bad, and now motor (14) continues through the two-way nut (5) of one-way clutch (7) driving of combination
Rotating, i.e., piston (11) and braking clamp body (3) continue relative motion, and therefore, sealing ring (9) keeps maximum flexibility deflection, and
Piston (11) overcomes the frictional force between sealing ring (9), is engaged with new contact surface with sealing ring (9), i.e. piston (11)
It is more than the maximum flexibility deflection of sealing ring (9) relative to the displacement of braking clamp body (3).When releasing braking, motor (14) drives
Worm-and-wheel gear inverts, one-way clutch (7) separation, the elastic potential energy release of sealing ring (9), makes piston (11) and caliper
Body (3) relative motion, drive left-handed screw (15) and right handed screw (4) while screw in two-way nut (5), now sealing ring (9)
Positioning is coordinated with new contact surface with piston (11), return displacement is still the maximum flexibility deflection of sealing ring (9), therefore
It is identical with before abrasion to maintain brake clearance, realizes the adjust automatically of brake clearance.
, can be after motor (14) be powered and reaches parking braking effect when the reverse efficiency of worm screw (8) and worm gear (6) is zero
Power-off, the parking braking under motor (14) powering-off state is realized using the auto-lock function of worm-and-wheel gear.
Refer to the attached drawing 3, an alternative embodiment of the invention is described.
The embodiment of accompanying drawing 3 and the embodiment main distinction of accompanying drawing 1 are as follows：
Transmission mechanism is different, is driven in accompanying drawing 1 using worm-and-wheel gear, and worm gear (6) is the final element of transmission mechanism,
One-way clutch (7) is arranged between worm gear (6) and two-way nut (5)；Two-stage gear drive is used in accompanying drawing 3, it is secondary driven
Gear (24) is the final element of transmission mechanism, and one-way clutch (7) is arranged on secondary driven gear (24) and two-way nut (5)
Between.
The stopping means that rubs is different, realizes friction limit function using sealing ring (9) in accompanying drawing 1, utilizes sealing ring (9)
Elastic deformation stores elastic potential energy；Friction limit function is realized using spring (17) and snap ring (18) in accompanying drawing 3, utilizes spring
(17) elastic deformation storage elastic potential energy is produced.
Piston positioning means are different, and piston positioning means are used as using dive key (10) in accompanying drawing 1, make piston (11) only
It can be axially moveable, can not rotate；Piston positioning means are used as using cylindrical roller (16) in accompanying drawing 3, make piston (11) can only
It is axially moveable, can not rotates.
The mode that parking braking function is realized is different, and in accompanying drawing 1, the reverse efficiency using worm-and-wheel gear is zero, directly
The parking braking under motor (14) powering-off state can be realized；In accompanying drawing 3, motor is discharged when being powered using electromagnetic brake (20)
Axle (19), locking motor shaft (19) realizes the parking braking under motor (14) powering-off state during power-off.
As shown in figure 3, a kind of floating caliper type disc 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 (13), brake disc in the jaw of braking clamp body (3)
(13) there is friction plate (12) both sides, and one is mounted on braking clamp body (3), and one is mounted on piston (11), and piston (11) passes through
On braking clamp body (3), snap ring (18) is pushed to away from brake disc (13) by spring (17) for cylindrical roller (16) and snap ring (18)
Side, spring (17) be arranged on braking clamp body (3) on.Cylindrical roller (16) makes piston (11) to move in the axial direction,
It can not rotate, have larger frictional force between the contact surface of snap ring (18) and piston (11), when the displacement of piston (11) is in spring
(17) when in regime of elastic deformation, without relative motion between the contact surface of snap ring (18) and piston (11).One end of piston (11)
Friction plate (12) is installed, left-handed screw (15) is fixedly mounted in the other end.The left hand thread of left-handed screw (15) and two-way nut (5)
Part coordinates installation, and one end of two-way nut (5) is left hand thread, coordinates with left-handed screw (15) and installs；The other end is dextrorotation
Screw thread, coordinates with right handed screw (4) and installs, and right handed screw (4) is fixedly mounted on braking clamp body (3).Therefore, left-handed screw
(15) can not be rotated with right handed screw (4), can only be mobile with piston (11) or braking clamp body (3).Two-way nut (5) it is cylindrical
Inner ring of the face as one-way clutch (7), the outer ring of one-way clutch (7) are fixedly connected with secondary driven gear (24), secondary
Driven gear (24), secondary driving gear (23), primary driven gear (22) and primary drive gear (21) form two-stage gear
Reducing gear, primary drive gear (21) are fixedly connected with the motor shaft (19) of motor (14).
During braking operation, motor (14) drives one-way clutch (7) to combine by two-stage gear reduction, drives two-way
Nut (5) rotates, and because left-handed screw (15) and right handed screw (4) can not rotate, therefore works as one-way clutch (7) junction belt
When dynamic two-way nut (5) rotates, left-handed screw (15) and right handed screw (4) while screwed out, be displaced outwardly, promotion piston (11)
With braking clamp body (3) while move in the opposite direction, friction plate corresponding to drive (12) is forced to system from both sides with identical
Moving plate (13), realize the braking effect of high efficient and reliable.Now, snap ring (18) and piston (11) move together, compression spring (17),
Without relative motion between the contact surface of spring (17) generation elastic deformation, storage elastic potential energy, snap ring (18) and piston (11).Release
During braking operation, motor (14) drives two-stage gear reduction to rotate backward, now, one-way clutch (7) separation, two-way spiral shell
Female (5) are in free state, the elastic potential energy release of spring (17) storage, make piston (11) and braking clamp body (3) relative motion,
Drive left-handed screw (15) and right handed screw (4) while screw in two-way nut (5), i.e., two-way nut (5) is in spring (17)
Elastic potential energy effect is lower to be reversely rotated, and all elements recover initial position.
When friction plate (12) wears, after thickness is thinning, during braking operation, motor (14) passes through two-stage gear reduction band
Dynamic one-way clutch (7) combines, and drives two-way nut (5) to rotate, makes left-handed screw (15) and right handed screw (4) while screw out,
Piston (11) and braking clamp body (3) relative motion is promoted, the elastic deformation amount of spring (17) reaches maximum, and snap ring (18) is close to
When on the step surface of left side, because friction plate (12) wears, braking effect is bad, and now motor (14) continues through the unidirectional of combination
Clutch (7) drives two-way nut (5) to rotate, i.e., piston (11) and braking clamp body (3) continue relative motion, therefore, spring
(17) maximum flexibility deflection is kept, and piston (11) overcomes the frictional force between snap ring (18), with new contact surface and card
Ring (18) is engaged.When releasing braking, motor (14) drives the reversion of two-stage gear reduction, one-way clutch (7) separation, bullet
The elastic potential energy release of spring (17), makes piston (11) and braking clamp body (3) relative motion, drives left-handed screw (15) and dextrorotation spiral shell
Bar (4) while two-way nut (5) is screwed in, now snap ring (18) and piston (11) coordinate positioning, return displacement with new contact surface
Amount is still the maximum flexibility deflection of spring (17), thus maintain brake clearance and abrasion before it is identical, realize brake cabin
The adjust automatically of gap.
When needing parking braking, make motor (14) drive friction plate (12) to compress brake disc (13), reach parking braking
It is required that then electromagnetic brake (20) powers off, locking motor shaft (19), keep braking effect constant, motor now can be achieved
(14) parking braking function under powering-off state.When electromagnetic brake (20) is powered, motor shaft (19) is discharged, now braking moment
Big I is freely controlled by motor (14).
In the embodiment of accompanying drawing 3, one-way clutch (7) can also be arranged in primary drive gear (21), or it is primary from
In moving gear (22), or in secondary driving gear (23), content to be protected as needed for claim 3.
The third embodiment shown in accompanying drawing 4 and second of embodiment shown in accompanying drawing 3 are essentially identical, and difference is：It is attached
Electromagnetic brake (20) is used to realize the parking braking function under motor (14) powering-off state in Fig. 3；Automatically controlled machine is used in accompanying drawing 4
Tool brake apparatus realizes the parking braking function under motor (14) powering-off state, and specific work process is as follows：
When magnet coil (25) is powered, lock pin (27) compression retracteding position spring (26), is made lock pin by electromagnetic force
(27) it is not in contact with each other with secondary driven gear (24), braking or the no any influence of release on brake；When the parking system of needs
When dynamic, motor (14) driving friction plate (12) compresses brake disc (13), reaches parking braking requirement, and then magnet coil (25) is disconnected
Electricity, lock pin (27) in the tooth of the secondary driven gear (24) of insertion, keep parking system under the elastic force effect of return spring (26)
Dynamic effect, you can realize the parking braking function under motor (14) powering-off state.
The structure of the third embodiment other parts shown in accompanying drawing 4 and the course of work all with the embodiment phase in accompanying drawing 3
Together, it is not further described.
Transmission mechanism can also use Chain conveyer, V belt translation, planetary gear in addition to using turbine and worm mechanism, gear mechanism
Other kinds of drive such as transmission, friction stopping means can also be obtained in addition to using sealing ring, spring/snap ring using other structures
To realize similar function, piston positioning means can also use spline, pin, piston in addition to using dive key, cylindrical roller
Outer surface is not rounded to wait various ways, and lockable mechanism can also act on lock pin special on other gears or with gear one
On latch ratchet, or the modes such as ratchet and pawl arrangement are installed on motor shaft and realize latch functions.Obviously, described embodiment
Only part of the embodiment of the invention, rather than whole embodiments, based on the embodiment in the present invention, in the art
Other all embodiments that those of ordinary skill is obtained on the premise of no progress creative work, belong to the present invention's
Protection domain.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that present invention specific implementation is not by aforesaid way
Limitation, as long as employ the inventive concept and technical scheme of the present invention progress various improvement, or it is not improved directly application
In other occasions, within protection scope of the present invention.
Claims (5)
1. a kind of floating caliper type disc brake-by-wire device, comprising motor, transmission mechanism, one-way clutch, two-way nut, left-handed screw,
Right handed screw, piston, rub stopping means, piston positioning means, braking clamp body, brake disc, friction plate；Described two-way nut
One end is left hand thread, is engaged with left-handed screw, and one end is right-handed thread, is engaged with right handed screw；Described friction plate
There is two panels, be arranged symmetrically in described brake disc both sides, one is arranged on described piston, and one is arranged on described braking
On caliper；Described piston is arranged on described braking clamp body via described friction stopping means, the positioning of described piston
Device makes piston to be moved back and forth in axis direction, can not rotate；Described left-handed screw and described right handed screw difference
It is fixedly mounted with described piston and described braking clamp body；The outer surface of described two-way nut is as described one-way clutch
The inner ring of device, the outer ring of described one-way clutch are fixedly connected with the final element of described transmission mechanism；Described transmission
The final element motion of mechanism, drives described one-way clutch outer ring rotate, one-way clutch combination, drives described two-way
When nut rotates, described left-handed screw and described right handed screw screw out simultaneously；Driver described in described motor connection
The input element of structure；A described friction stopping means part is fixedly mounted on described braking clamp body, another part and institute
There is larger frictional force between the outer surface of piston stated, when having relative displacement between described piston and described braking clamp body,
Because frictional force effect makes to produce elastic potential energy in described friction stopping means；
During braking, described motor drives described one-way clutch outer ring to move via described transmission mechanism, one-way clutch
Device combines, and drives described two-way nut rotation, described left-handed screw and described right handed screw screw out simultaneously, described in drive
Piston and described braking clamp body move in the opposite direction respectively, described friction plate is pressed on described brake disc two
Side, the braking effect of high efficient and reliable is obtained, now, have relative displacement between described piston and described braking clamp body, in institute
Elastic potential energy is produced in the friction stopping means stated；When releasing braking, described motor drives via described transmission mechanism
Described one-way clutch outer ring counter motion, one-way clutch separate, the elastic potential energy inside described friction stopping means
Effect, make described piston and described braking clamp body relative motion, recover initial position, the rotation of now described two-way nut
Make described left-handed screw and described right handed screw while screw in；
After described friction plate has abrasion, thickness thinning, during braking operation, described motor drives via described transmission mechanism
Move described one-way clutch to combine, drive described two-way nut rotation, make described piston and described caliper body phase
To movement, elastic potential energy reaches maximum in described friction stopping means, and because friction plate is thinning, braking effect is bad, now
Described motor works on, and drives described two-way nut to be rotated further, overcome the outer surface of described piston with it is described
Frictional force between friction stopping means, makes described piston and described braking clamp body continue to relatively move, and compresses brake disc,
Obtain reliable efficient braking effect；When releasing braking, the elastic potential energy effect in described friction stopping means, make described
Piston and described braking clamp body relative motion, now described piston is with described friction stopping means with new contact position
It is relatively fixed, realizes the adjust automatically of brake clearance.
2. a kind of floating caliper type disc brake-by-wire device according to claim 1, it is characterised in that two-way described in being additionally included in
Using circulation spherical structure between nut and described left-handed screw, described right handed screw, to reduce frictional resistance, system is improved
Operating efficiency.
3. a kind of floating caliper type disc brake-by-wire device according to claim 1, it is characterised in that unidirectional described in being additionally included in
Increase transmission system between clutch and described two-way nut.
4. a kind of floating caliper type disc brake-by-wire device according to claim 1, it is characterised in that also include described transmission
The inner ring of one-way clutch described in the final element connection of mechanism, the described one-way clutch of described two-way nut connection
Outer ring, during braking operation, described one-way clutch combines, when releasing braking, the separation of described one-way clutch.
5. a kind of floating caliper type disc 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710505966.4A CN107448521B (en) | 2017-06-20 | 2017-06-20 | A kind of floating caliper type disc brake-by-wire device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710505966.4A CN107448521B (en) | 2017-06-20 | 2017-06-20 | A kind of floating caliper type disc brake-by-wire device |
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| Publication Number | Publication Date |
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| CN107448521A true CN107448521A (en) | 2017-12-08 |
| CN107448521B CN107448521B (en) | 2019-09-20 |
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| CN201710505966.4A Active CN107448521B (en) | 2017-06-20 | 2017-06-20 | A kind of floating caliper type disc brake-by-wire device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660439A (en) * | 2020-06-16 | 2020-09-15 | 邵立坤 | Motor control device for concrete mixer truck |
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| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
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| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| JP5234266B2 (en) * | 2008-08-29 | 2013-07-10 | 日立オートモティブシステムズ株式会社 | Disc brake device |
| CN205578558U (en) * | 2016-04-07 | 2016-09-14 | 金华职业技术学院 | Automotive electronics mechanical brake with clearance adjustment function |
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| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
| JP5234266B2 (en) * | 2008-08-29 | 2013-07-10 | 日立オートモティブシステムズ株式会社 | Disc brake device |
| 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 |
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| CN111660439A (en) * | 2020-06-16 | 2020-09-15 | 邵立坤 | Motor control device for concrete mixer truck |
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| CN107448521B (en) | 2019-09-20 |
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