CN107448521B - 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
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- CN107448521B CN107448521B CN201710505966.4A CN201710505966A CN107448521B CN 107448521 B CN107448521 B CN 107448521B CN 201710505966 A CN201710505966 A CN 201710505966A CN 107448521 B CN107448521 B CN 107448521B
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- braking
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- handed screw
- way clutch
- brake
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- 238000007667 floating Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 21
- 230000033001 locomotion Effects 0.000 claims description 22
- 238000005381 potential energy Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000005299 abrasion Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 20
- 230000005489 elastic deformation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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 limiting devices etc..Motor drives the outer ring of one-way clutch to rotate by transmission mechanism, one-way clutch drives two-way nut rotation, piston and braking clamp body are respectively driven by bidirectional helical mechanism to move in the opposite direction, and 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 floating caliper type disc 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 system
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
Part brake often lacks the function of brake clearance automatic adjustment, makes brake in external environmental change and friction disc wear
In the case where cause brake actuator efficiency change indefinite problem, thus to brake efficiency control bring certain difficulty.Together
When, 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 floating caliper type disc 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, i.e., it is interchangeable
Calculation 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:
It include motor equipped with a kind of floating caliper type disc brake-by-wire device, transmission mechanism, one-way clutch, two-way nut is left-handed
Screw rod, right handed screw, piston, rub limiting device, piston positioning means, braking clamp body, brake disc, friction plate；Described is double
It is left hand thread to nut one end, is matched with left-handed screw, one end is right-handed thread, is matched with right handed screw；Described
Friction plate has two panels, is arranged symmetrically in the brake disc two sides, and one is mounted on the piston, one be mounted on it is described
Braking clamp body on；The piston is mounted on the braking clamp body via the friction limiting device, the work
Plug positioning device move back and forth piston can only in axis direction, can not rotate；The left-handed screw and the dextrorotation spiral shell
Bar is fixedly mounted with the piston and the braking clamp body respectively；The outer surface of the two-way nut is as the list
To the inner ring of clutch, the outer ring of the one-way clutch is fixedly connected with the final element of the transmission mechanism；It is described
Transmission mechanism final element movement, drive the one-way clutch outer ring rotate, one-way clutch combination, described in drive
Two-way nut rotation when, the left-handed screw and the right handed screw screw out simultaneously；Described in the motor connection
The input element of transmission mechanism；Described friction limiting device a part is fixedly mounted on the braking clamp body, another portion
Point there is biggish frictional force between the outer surface of piston, when having opposite position between the piston and the braking clamp body
When shifting, since frictional force effect makes to generate elastic potential energy in the friction limiting device；
When braking, the motor is moved via the transmission mechanism driving one-way clutch outer ring, unidirectionally
Clutch combines, and the two-way nut is driven to rotate, and the left-handed screw and the right handed screw screw out simultaneously, drives
The piston and the braking clamp body move in the opposite direction respectively, and the friction plate is made to be pressed on the braking
Disk two sides obtain the braking effect of high efficient and reliable, at this point, have relative displacement between the piston and the braking clamp body,
Elastic potential energy is generated in the friction limiting device；When releasing braking, the motor is via the transmission mechanism
The driving one-way clutch outer ring counter motion, one-way clutch separate, 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 two-way nut
Rotation makes the left-handed screw and the right handed screw while screwing in；
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 relatively moves, and 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 is connect with the friction limiting device with new at this time
It is relatively fixed to touch position, 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.
It further include by the inner ring of the final element connection of the transmission mechanism one-way clutch, described is two-way
The outer ring of the nut connection one-way clutch, when braking operation, the one-way clutch is combined, when releasing braking, institute
The one-way clutch separation stated.
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 system
Dynamic device can be disconnected when being powered, actuated element when power-off in fixed conveyor link, keep the friction plate and described
Brake disc between pressure size, realize parking braking function；It is arranged when in the transmission mechanism or the transmission system
When having the transmission link that reverse efficiency is zero, it 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.
Detailed description of the invention
Fig. 1 is a kind of main view of the embodiment one of floating caliper type disc brake-by-wire device of the invention.
Fig. 2 is a kind of A direction view of the embodiment one of floating caliper type disc brake-by-wire device of the invention.
Fig. 3 is a kind of main view of the embodiment two of floating caliper type disc brake-by-wire device of the invention.
Fig. 4 is a kind of main view of the embodiment three of floating caliper type disc brake-by-wire device of the invention.
Explanation: the two-way nut of 1- brake-caliper support 2- guide pin 3- braking clamp body 4- right handed screw 5- is marked in attached drawing
6- worm gear 7- one-way clutch 8- worm screw 9- sealing ring 10- dive key 11- piston 12- friction plate 13- brake disc
At the beginning of 14- motor 15- left-handed screw 16- cylindrical roller 17- spring 18- snap ring 19- motor shaft 20- electromagnetic brake 21-
Grade driving gear 22- primary grade driving gear 24- times of driven gear 23- times grade driven gear 25- electromagnetic coil 26- is returned
Position spring 27- lock pin
Specific embodiment
With reference to attached drawing 1 and attached 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 includes one and can move on guide pin (2)
Braking clamp body (3), guide pin (2) are fixed on brake-caliper support (1).Have in the jaw of braking clamp body (3) brake disc (13), makes
The two sides of Moving plate (13) have friction plate (12), and one is mounted on braking clamp body (3), and one is mounted on piston (11), piston (11)
Through dive key (10) and sealing ring (9) on braking clamp body (3), dive key (10) makes piston (11) can only be along axis
Direction is mobile, is not able to rotate, has biggish frictional force between sealing ring (9) and the contact surface of piston (11), when the position of piston (11)
When moving in the regime of elastic deformation of sealing ring (9), without relative motion between sealing ring (9) and the contact surface of piston (11).Piston
(11) friction plate (12) are installed in one end, and left-handed screw (15) are fixedly mounted in the other end.Left-handed screw (15) and two-way nut (5)
Left-handed threaded portion be coupled, one end of two-way nut (5) is left hand thread, is coupled with left-handed screw (15)；Separately
One end is right-handed thread, is coupled with right handed screw (4), and right handed screw (4) is fixedly mounted on braking clamp body (3).Therefore,
Left-handed screw (15) and right handed screw (4) are not able to 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).
When braking operation, motor (14) drives worm screw (8) rotation, drives worm gear (6) underdrive, at this time one-way clutch
(7) it combines, two-way nut (5) is driven to rotate, since left-handed screw (15) and right handed screw (4) can not rotate, when single
When combining the two-way nut (5) of drive to rotate to clutch (7), left-handed screw (15) and right handed screw (4) are screwed out simultaneously, outward
It is mobile, it pushes piston (11) and braking clamp body (3) to move in the opposite direction simultaneously, drives corresponding friction plate (12) from two sides
It is forced with identical to brake disc (13), realizes the braking effect of high efficient and reliable.At this point, flexible deformation, storage occur for sealing ring (9)
Elastic potential energy is deposited, without relative motion between sealing ring (9) and the contact surface of piston (11).When releasing braking operation, motor (14) band
Dynamic worm screw (8) rotate backward, and driving worm gear (6) also rotates backward, at this point, one-way clutch (7) separates, at two-way nut (5)
In free state, the elastic potential energy release of sealing ring (9) storage makes piston (11) and braking clamp body (3) relative motion, drives left
Rotation screw rod (15) and right handed screw (4) screw in two-way nut (5) simultaneously, i.e., elastic potential of the two-way nut (5) in sealing ring (9)
It can be reversely rotated under effect, all elements restore initial positions.
When friction plate (12) are worn, after thickness is thinning, when braking operation, motor (14) passes through worm screw (8), worm gear (6) band
Dynamic one-way clutch (7) combine, and drive two-way nut (5) to rotate, make left-handed screw (15) and right handed screw (4) while screwing out,
Piston (11) and braking clamp body (3) relative motion is pushed, when the elastic deformation amount of sealing ring (9) reaches maximum, due to friction plate
(12) it wears, braking effect is bad, and the one-way clutch (7) that motor (14) continues through combination at this time drives two-way nut (5)
Rotation, 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 matched with new contact surface with sealing ring (9), i.e. piston (11)
It is greater than the maximum flexibility deflection of sealing ring (9) relative to the displacement of braking clamp body (3).When releasing braking, motor (14) is driven
Worm gear mechanism reversion, one-way clutch (7) separation, the elastic potential energy release of sealing ring (9) make piston (11) and caliper
Body (3) relative motion drives left-handed screw (15) and right handed screw (4) to screw in two-way nut (5) simultaneously, at this time sealing ring (9)
Positioning is cooperated with new contact surface with piston (11), return displacement is still the maximum flexibility deflection of sealing ring (9), therefore
It is identical as before abrasion to maintain brake clearance, realizes the adjust automatically of brake clearance.
It, can be after motor (14) be powered and reach parking braking effect when the reverse efficiency of worm screw (8) and worm gear (6) is zero
The parking braking under motor (14) power blackout situation is realized in power-off using the self-locking function of worm gear mechanism.
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 (6) is the final element of transmission mechanism,
One-way clutch (7) is mounted between worm gear (6) and two-way nut (5)；Two-stage gear drive is used in attached drawing 3, it is secondary driven
Gear (24) is the final element of transmission mechanism, and one-way clutch (7) is mounted on secondary driven gear (24) and two-way nut (5)
Between.
The limiting device that rubs is different, realizes friction limit function using sealing ring (9) in attached drawing 1, utilizes sealing ring (9)
Flexible deformation stores elastic potential energy；Friction limit function is realized using spring (17) and snap ring (18) in attached drawing 3, utilizes spring
(17) it generates flexible deformation and stores elastic potential energy.
Piston positioning means are different, are used as piston positioning means using dive key (10) in attached 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 attached drawing 3, make piston (11) can only
It is axially moveable, can not rotate.
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 (14) power blackout situation may be implemented；In attached drawing 3, motor is discharged when being powered using electromagnetic brake (20)
Axis (19), locking motor shaft (19) realizes the parking braking under motor (14) power blackout situation when 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 pin (2)
Body (3), guide pin (2) are fixed on brake-caliper support (1).There are brake disc (13), brake disc in the jaw of braking clamp body (3)
(13) two sides have friction plate (12), 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 by spring (17) far from brake disc (13) for cylindrical roller (16) and snap ring (18)
Side, spring (17) is mounted on braking clamp body (3).Cylindrical roller (16) move piston (11) can only in the axial direction,
It is not able to rotate, has biggish frictional force between snap ring (18) and the contact surface of piston (11), when the displacement of piston (11) is in spring
(17) when in regime of elastic deformation, without relative motion between snap ring (18) and the contact surface of piston (11).One end of piston (11)
It installs friction plate (12), left-handed screw (15) are fixedly mounted in the other end.The left hand thread of left-handed screw (15) and two-way nut (5)
Part is coupled, and one end of two-way nut (5) is left hand thread, is coupled with left-handed screw (15)；The other end is dextrorotation
Screw thread is coupled with right handed screw (4), and right handed screw (4) is fixedly mounted on braking clamp body (3).Therefore, left-handed screw
(15) it is not able to rotate with right handed screw (4), it can only be mobile with piston (11) or braking clamp body (3).The outer circle of two-way nut (5)
Inner ring of the face as one-way clutch (7), the outer ring of one-way clutch (7) is fixedly connected with secondary driven gear (24), secondary
Driven gear (24), secondary driving gear (23), primary driven gear (22) and primary drive gear (21) constitute two-stage gear
Deceleration mechanism, primary drive gear (21) are fixedly connected with the motor shaft (19) of motor (14).
When braking operation, motor (14) drives one-way clutch (7) to combine by two-stage gear reduction, drives two-way
Nut (5) rotation works as one-way clutch (7) junction belt since left-handed screw (15) and right handed screw (4) can not rotate
When moving two-way nut (5) rotation, left-handed screw (15) and right handed screw (4) are screwed out simultaneously, are displaced outwardly, and are pushed piston (11)
It is moved in the opposite direction simultaneously with braking clamp body (3), corresponding friction plate (12) is driven to be forced from two sides with identical to system
Moving plate (13), realizes the braking effect of high efficient and reliable.At this point, snap ring (18) and piston (11) move together, compressed spring (17),
Flexible deformation occurs for spring (17), elastic potential energy is stored, without relative motion between snap ring (18) and the contact surface of piston (11).It releases
When braking operation, motor (14) drives two-stage gear reduction to rotate backward, at this point, one-way clutch (7) separates, two-way spiral shell
Female (5) are in free state, and the elastic potential energy release of spring (17) storage makes piston (11) and braking clamp body (3) relative motion,
Left-handed screw (15) and right handed screw (4) are driven to screw in two-way nut (5) simultaneously, i.e., two-way nut (5) is in spring (17)
Elastic potential energy effect is lower to be reversely rotated, and all elements restore initial position.
When friction plate (12) are worn, after thickness is thinning, when braking operation, motor (14) passes through two-stage gear reduction band
Dynamic one-way clutch (7) combine, and drive two-way nut (5) to rotate, make left-handed screw (15) and right handed screw (4) while screwing out,
Piston (11) and braking clamp body (3) relative motion is pushed, the elastic deformation amount of spring (17) reaches maximum, and snap ring (18) is close to
When on the step surface of left side, since friction plate (12) are worn, braking effect is bad, and motor (14) continues through the unidirectional of combination at this time
Clutch (7) drives two-way nut (5) rotation, i.e. piston (11) and braking clamp body (3) continues 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) matches.When releasing braking, motor (14) drives the reversion of two-stage gear reduction, one-way clutch (7) separation, bullet
The elastic potential energy of spring (17) discharges, and makes piston (11) and braking clamp body (3) relative motion, drives left-handed screw (15) and dextrorotation spiral shell
Bar (4) screws in two-way nut (5) simultaneously, and snap ring (18) and piston (11) are cooperated at this time with new contact surface positions, return displacement
Amount is still the maximum flexibility deflection of spring (17), 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 (14) driving friction plate (12) is compressed brake disc (13), reach parking braking
It is required that then electromagnetic brake (20) powers off, locking motor shaft (19) keeps braking effect constant, motor can be realized at this time
(14) parking braking function under power blackout situation.When electromagnetic brake (20) is powered, discharge motor shaft (19), at this time braking moment
Size can freely be controlled by motor (14).
In the embodiment of attached 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), then transmission mechanism includes the portion from motor output shaft to one-way clutch
Point, transmission system includes the part from one-way clutch to two-way nut.
Attached the third embodiment shown in Fig. 4 and attached second of embodiment shown in Fig. 3 are essentially identical, and difference is: attached
The parking braking function under motor (14) power blackout situation is realized using electromagnetic brake (20) in Fig. 3；Automatically controlled machine is used in attached drawing 4
Tool brake apparatus realizes the parking braking function under motor (14) power blackout situation, and specific work process is as follows:
When electromagnetic coil (25) is powered, lock pin (27) is made lock pin by electromagnetic force, compression retracteding position spring (26)
(27) it is not in contact with each other with secondary driven gear (24), braking or the no any influence of release to brake；When the parking system of needs
When dynamic, motor (14) drives friction plate (12) to compress brake disc (13), reaches parking braking requirement, and then electromagnetic coil (25) is disconnected
Electricity, lock pin (27) are inserted into the tooth of secondary driven gear (24) under the elastic force effect of return spring (26), keep parking system
Dynamic effect, can be realized the parking braking function under motor (14) power blackout situation.
The structure of attached the third embodiment other parts shown in Fig. 4 and the course of work all with the embodiment phase in attached drawing 3
Together, it is not further described.
Transmission mechanism can also use chain conveyer, V belt translation, planetary gear in addition to using worm gear mechanism, gear mechanism
Other kinds of drive such as transmission, friction limiting device can also be obtained in addition to using sealing ring, spring/snap ring using other structures
To realize that similar function, piston positioning means can also use spline, pin, piston in addition to using dive key, cylindrical roller
The non-circular equal various ways in outer surface, lockable mechanism can also act on lock pin dedicated 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 a part of the embodiments of the present invention, instead of all the embodiments, based on the embodiments of the present invention, in the art
Those of ordinary skill's other all embodiments obtained under the premise of no progress creative work, belong to of the invention
Protection scope.
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 (5)
- It include motor 1. a kind of floating caliper type disc brake-by-wire device, transmission mechanism, one-way clutch, two-way nut, left-handed screw, Right handed screw, piston, rub limiting device, piston positioning means, braking clamp body, brake disc, friction plate；The two-way nut One end is left hand thread, is matched with left-handed screw, and one end is right-handed thread, is matched with right handed screw；The friction plate There is two panels, be arranged symmetrically in the brake disc two sides, one is mounted on the piston, and one is mounted on the braking On caliper；The piston is mounted on the braking clamp body via the friction limiting device, the piston positioning Device move back and forth piston can only in axis direction, can not rotate；The left-handed screw and the right handed screw difference It is fixedly mounted with the piston and the braking clamp body；The outer surface of the two-way nut is as the one-way clutch The inner ring of device, the outer ring of the one-way clutch are fixedly connected with the final element of the transmission mechanism；The transmission The final element of mechanism moves, and the one-way clutch outer ring is driven rotate, one-way clutch combination, drives described two-way When nut rotates, the left-handed screw and the right handed screw screw out simultaneously；The motor connection driver The input element of structure；Described friction limiting device a part is fixedly mounted on the braking clamp body, another part and institute There is biggish frictional force between the outer surface of piston stated, when having relative displacement between the piston and the braking clamp body, Since frictional force effect makes to generate elastic potential energy in the friction limiting device；When braking, the motor is moved via the transmission mechanism driving one-way clutch outer ring, one-way clutch Device combines, and drives the two-way nut to rotate, the left-handed screw and the right handed screw screw out simultaneously, described in drive Piston and the braking clamp body move in the opposite direction respectively, so that the friction plate is pressed on the brake disc two Side obtains the braking effect of high efficient and reliable, at this point, having relative displacement between the piston and the braking clamp body, in institute Elastic potential energy is generated in the friction limiting device stated；When releasing braking, the motor drives via the transmission mechanism The one-way clutch outer ring counter motion, one-way clutch separate, the elastic potential energy inside the friction limiting device Effect makes the piston and the braking clamp body relative motion, restores initial position, at this time two-way nut rotation Make the left-handed screw and the right handed screw while screwing in；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 floating caliper type disc 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 floating caliper type disc 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 floating caliper type disc brake-by-wire device according to claim 1, it is characterised in that further include by the transmission The inner ring of the final element connection of the mechanism one-way clutch, the two-way nut connection one-way clutch Outer ring, when braking operation, the one-way clutch is combined, when releasing braking, the one-way clutch separation.
- 5. a kind of floating caliper type disc brake-by-wire device according to claim 3, it is characterised in that when the transmission mechanism or When the transmission link for being zero without reverse efficiency in the transmission system, realized using lockable mechanism under the motor power blackout situation Parking braking, the lockable mechanism use electromagnetic brake or electric-controlled mechanical brake apparatus, can be powered when disconnect, break Actuated element when electric in fixed conveyor link keeps the size of pressure between the friction plate and the brake disc, realizes Parking braking function；When being provided with the transmission link that reverse efficiency is zero in the transmission mechanism or the transmission system, It can use the lockable mechanism and realize parking braking, also can use reverse efficiency is zero, and power and movement can not be passed reversely It passs, realizes the parking braking under the motor power blackout situation.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107448521A CN107448521A (en) | 2017-12-08 |
| CN107448521B true CN107448521B (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111660439B (en) * | 2020-06-16 | 2022-06-24 | 邵立坤 | Motor control device for concrete mixer truck |
| CN115773322A (en) * | 2022-11-23 | 2023-03-10 | 芜湖伯特利汽车安全系统股份有限公司 | Electronic mechanical brake caliper and brake system |
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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 |
| 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 |
| 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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2017
- 2017-06-20 CN CN201710505966.4A patent/CN107448521B/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 |
| 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 |
| 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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| Publication number | Publication date |
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| CN107448521A (en) | 2017-12-08 |
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