CN107745704A - Line control brake system actuator - Google Patents

Line control brake system actuator Download PDF

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Publication number
CN107745704A
CN107745704A CN201710901273.7A CN201710901273A CN107745704A CN 107745704 A CN107745704 A CN 107745704A CN 201710901273 A CN201710901273 A CN 201710901273A CN 107745704 A CN107745704 A CN 107745704A
Authority
CN
China
Prior art keywords
power source
caliper
brake
fixed
feed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710901273.7A
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Chinese (zh)
Inventor
朱旺旺
黄宏成
林海阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Jiaotong University
Original Assignee
Shanghai Jiaotong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Jiaotong University filed Critical Shanghai Jiaotong University
Priority to CN201710901273.7A priority Critical patent/CN107745704A/en
Publication of CN107745704A publication Critical patent/CN107745704A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/741Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator

Abstract

A kind of line control brake system actuator of automobile brake design field, including power source, fixed support, caliper body, friction plate retainer, friction plate, feeding cavity, connecting bracket.The power source of brake derives from the motor of big torsion in the present invention, control signal is sent to brake receiver unit by control unit by bus, brake power source receives the signal that vehicle bus is sent, and responds, and realizes a certain degree of braking function or parking function.Driver to put one's foot down when, automatically terminate braking.This patent of the present invention has carried out new design to the structure of actuator, develop " the wedge-shaped feed mechanism on gyratory directions ", solve the transition problem for being turned back to linear motion under small space to a certain extent, while can also play a part of slowing down to increase well turning round.

Description

Line control brake system actuator
Technical field
It is particularly a kind of to use the present invention relates to a kind of brake system actuator of automobile brake design field The brake system actuator of electric transmission technology control system.
Background technology
Automobile is during traveling, and brakes is responsible for the substantial responsibility for ensureing normally travel and safety, in automobile Upper widely used brakes is vacuum boosting braking system.Brake system of car refers to some parts of automobile (mainly Wheel) apply certain power, so as to carry out a series of special arrangements of a certain degree of forced brake to it.Brakes acts on It is:The automobile in traveling is set to carry out forced deceleration according to the requirement of driver or even stop;Make the automobile of stagnation of movement in various roads (it is included on ramp) steadily halt under the conditions of road;The car speed of descent run is set to keep stable.Braking action is risen to automobile Can only act on automobile and external force that direction is opposite with vehicle traveling direction, and the size of these external force is all random , it is uncontrollable, therefore a series of special arrangements must be installed on automobile to realize above-mentioned function.Brake system of car refers to In order to technically ensure the safety traffic of automobile, the average speed etc. of automobile is improved, and it is special that brake apparatus is installed on automobile The arrestment mechanism of door.In general brake system of car includes two sets of independent dresses of service braking device and stop device Put.Wherein service braking device is manipulated by driver with pin, therefore also known as foot brake.Stop device is by driving The person of sailing is hand-operated, therefore also known as hand brake device.
With the rapid development of the progress of motor technology, and automotive electronic technology, the large scale integrated circuit on automobile To widely use be inexorable trend.Brakes is also constantly improving, and researches and develops new brake-by-wire device for promoting The development of automobile industry has the function that huge.But in existing technology, use the braking of electric transmission technology control system System is not widely used also.
The content of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, it is proposed that a kind of new automobile line control brake system, uses electricity The work of drive technology control system, it can be responded according to the braking intention of driver.The system is no longer as traditional true Empty energy assisted braking system system needs engine to provide negative pressure progress power-assisted like that.Therefore, in engine time-sharing work or uneasiness Filling can widely use on the automobile of internal combustion engine, and use electric transmission technical controlling, can apply on intelligent driving automobile.
The present invention proposes a kind of simple in construction, rapid brake-by-wire device design of response.The pedal for controlling brake is one Angular-rate sensor module, for gathering the braking intention of driver, after the brake signal of driver is collected, information is turned Change level signal into and be sent to control unit, will by the communication technology (such as CAN) after control unit carries out data processing Control signal is delivered to brake.Brake power source receives the signal that vehicle bus is sent, and responds, and realizes certain The braking function or parking function of degree.Under parked state, when driver to put one's foot down when, automatically terminate braking.
The oil circuit of complexity is no longer needed inside new brake-by-wire device, its part includes power source, power transmission Device and brake actuator.Power source is made receiving the laggard action of signal that control unit sends;Power passes through spline housing It is sequentially delivered to spline in bay, then promotes the piston movement being connected in bay, eject friction plate;Power transmission scheme In propose a kind of new structure:Swinging wedge shape feed mechanism.
How this transmission scheme type selecting is converted to gyration straight line fortune, it is necessary to resolve in limited space It is dynamic, and obtain good power effect.In this patent, wedge mechanism on usually common linear movement direction is evolved into back Turn the wedge-shaped feed mechanism on direction, it is possible to achieve gyration is transformed to the process of linear motion.Moreover, wedge mechanism has Have big force increasing ratio, small size and it is compact-sized the characteristics of.
The executing agency that the brake-by-wire device power transmission scheme of this patent is final continues to use existing spot-type disc brake.System The structure of dynamic device needs to carry out design again, and existing brake only has two mounting holes, for caliper to be fixed on into car On body, the structure of this secondary design then needs more mounting hole sites, so as to install the power source of brake and other biographies Dynamic structure.
The present invention is achieved through the following technical solutions, the present invention include power source, the fixed support of power source first, First caliper body, the second caliper body, friction plate retainer, friction plate, the fixed support of power source second, feeding cavity, company Support is connect, power source is connected on caliper body by the fixed support of power source first, the fixed support of power source second, connection side Formula is bolt connection;First caliper body, the second caliper body are bolted together, and feeding cavity is by being arranged symmetrically Two connecting brackets be connected on the first caliper body;In feeding cavity built with spline housing, fixed feed shelter, swivel feeding Disk, thrust bearing ball, the first sealing ring, bay, the second sealing ring, feeding ball, thrust bearing retainer, baffle ring, spline housing connect The rectangular spline of power source involute spline output shaft and swivel feeding disk is connect, fixed feed shelter passes through interference fit and stopper slot Be fixed on feeding inside cavity, the side of fixed feed shelter props up the inner side shaft shoulder of feeding cavity, fixed feed shelter with turn round into To disk mechanical connection is established to feed ball as medium;The primary side of baffle ring is bay, connection bearing pin, piston, and bay connection is kept off Ring and piston, bay and piston by connecting pin axis connection, piston mounted in pairs with caliper body, piston outer wall and clamp sheet Internal wall coordinates for gap.
Further, in the present invention, three pair cross-sections are machined with above fixed feed shelter and swivel feeding disk to be shaped as justifying The feed slot of arc, the feed slot of swivel feeding disk are arranged symmetrically with the feed slot of fixed feed shelter.
Further, in the present invention, a shaft shoulder and four grooves are carried on the outer surface of spline housing.
Compared with prior art, the present invention have the advantages that for:The present invention is reasonable in design, simple in construction, response Rapidly, can be responded according to the braking intention of driver;No longer needed as traditional vacuum servo formula brakes Engine provides negative pressure and carries out power-assisted;Not installing in engine time-sharing work or can widely use on the automobile of internal combustion engine, And electric transmission technical controlling is used, it can apply on intelligent driving automobile.
Brief description of the drawings
Fig. 1 is brake-by-wire device actuator installation diagram in the present invention;
Fig. 2 is the sectional view of brake-by-wire device actuator;
Fig. 3 is wedge-shaped feed mechanism;
Fig. 4 is wedge-shaped feed mechanism force analysis;
Wherein:1st, power source, 2, the fixed support of power source first, the 3, first caliper body, the 4, second caliper body, 5, rub Pad retainer, 6, friction plate, 7, the fixed support of power source second, 8, feeding cavity, 9, connecting bracket, 10, spline housing, 11, Fixed feed shelter, 12, swivel feeding disk, 13, thrust bearing ball, the 14, first sealing ring, 15, bay, the 16, second sealing ring, 17th, ball is fed, 18, thrust bearing retainer, 19, connection baffle ring, 20, connection bearing pin, 21, piston.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings, the present embodiment is using technical solution of the present invention before Carry, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment
As shown in Figure 1 to Figure 3, the present invention includes power source 1, power source the first fixed support 2, the first caliper body 3, the Two caliper bodies 4, friction plate retainer 5, friction plate 6, the second fixed support of power source 7, feeding cavity 8, connecting bracket 9, are moved Power source 1 is connected on caliper body 3 by the first fixed support of power source 2, the second fixed support of power source 7, and connected mode is Bolt connection;First caliper body 3, the second caliper body 4 are bolted together, and feeding cavity 8 is by being arranged symmetrically Two connecting brackets 9 be connected on the first caliper body 3;Feeding cavity 8 built with spline housing 10, fixed feed shelter 11, Swivel feeding disk 12, thrust bearing ball 13, the first sealing ring 14, bay 15, the second sealing ring 16, feeding ball 17, thrust bearing Retainer 18, baffle ring 19, spline housing 10 connect the rectangular spline of the involute spline output shaft of power source 1 and swivel feeding disk 12, Fixed feed shelter 11 is fixed on inside feeding cavity 8 by interference fit and stopper slot, the side of fixed feed shelter 11 prop up into To the inner side shaft shoulder of cavity 8, fixed feed shelter 11 establishes mechanical connection to feed ball 17 with swivel feeding disk 12 as medium;Gear The primary side of ring 19 is bay 15, connection bearing pin 20, piston 21, and bay 15 connects baffle ring 19 and piston 21, bay 15 and piston 21 are connected by connecting bearing pin 20, and in the mounted in pairs of piston 21 and caliper body 3, the outer wall of piston 21 is with the inwall of caliper body 3 Gap coordinates.
Fig. 3 is a sketch of nucleus movement part.The composition of wedge-shaped feed mechanism includes three parts, is divided into fixed feeding Disk 11, feeding ball 17 (being used as the medium that motion is transmitted) and swivel feeding disk 12.On fixed feed shelter 11 and swivel feeding disk 12 Face is machined with the feed slot that three pair cross-sections are shaped as circular arc.
Respectively using two feed shelters as stress object, force analysis is carried out, simplified mechanical model will be distributed by such as Fig. 4 Feeding ball on three grooves, which is simplified on a groove inclined-plane, carries out Analysis on Mechanics Model, can see in force analysis figure The inclination angle of groove is about 10 °, and the selection of the angle can ensure that stroke meets that the deceleration that maximum is obtained under conditions of requiring increases and turned round Effect, reduce power source 1 burden.In addition, can not only increase the area of contact using three grooves, reducing contact should Power, and the effect for keeping axially stablizing can be played.
The feed slot of swivel feeding disk 12 is symmetrical with the feed slot of fixed feed shelter 11.But swivel feeding disk 12 exists Not only need to connect the power that spline housing 10 passes over when work, carry out the input of gyration, and also need to revolving The motion of axial direction is carried out while turning.On solving the problems, such as rotary motion and linear motion synchronous coordination, the machinery knot of selection Structure is spline drived.The motion of radial direction can be not only transmitted, and can be upward with release shaft while radial motion is transmitted One-movement-freedom-degree.
Spline housing 10 is mainly used in connecting the output shaft and swivel feeding disk 12 of power source 1, realizes the transmission of power.Spline The side of set is involute spline, and the spline is that the form of the spline on the output shaft according to power source 1 is designed, convenient The connection of power source 1 and spline housing 10.Spline housing 10 other side be with swivel feeding disk 12 coordinate rectangular spline, square Shape spline is very steady when motion is transmitted, and is not in that radial force is uneven during passing power Phenomenon, compare the transmission for being appropriate for high pulling torque, and rectangular spline is also used as swivel feeding disk during transmission 12 guide grooves being axially moved, dependence is provided for the axial motion of swivel feeding disk 12.
A shaft shoulder is designed with the outer surface of spline housing 10, the shaft shoulder is mainly and the shaft shoulder of feeding cavity 8 is engaged, Axial positioning is provided for spline housing 10.Four grooves are also machined with the outer surface of spline housing 10, deeper one is used to prevent The sealing ring being only process with felt, it is mainly used in the work of the sealing of the inside of whole brake;Three other grooves Specification is identical, is technology groove, after installation is complete, its outer surface and feed bracket coordinate spline housing 10, exist between the two Relative slip can be produced when motion, also just inevitably needs are lubricated, and the groove can of these three same specifications rises To the effect for accommodating lubricating oil, and during relative slide, metal fillings will necessarily be produced, if caused metal fillings obtains Less than good placement, rubbed back and forth on the surface of revolution always, the abrasion of component surface can be aggravated, reduce making for brake With the life-span, the groove can of these three specifications of the same race plays a part of storing metal fillings.In addition, the outer round surface of spline housing 10 is Polished surface, fluting can reduce workload when processing, improve the efficiency of processing, reduce processing cost.
Feeding cavity 8 is that spline housing 10, the wedge-shaped feed mechanism of the whole series, thrust bearing and bay 15 provide installation site, And provide an opposing seal clean working environment, ensure the normal work of brake.Moreover, feeding cavity 8 will also Above-mentioned each several part and support are connected on caliper body 1 by way of two connecting brackets 9 are connected with itself. In addition, it is contemplated that the axle of power source 1 can only outputting radial torque, do not allow great active force be present in the axial direction, Axial force, which crosses conference, influences the work of power source, or even infringement power source 1, therefore is specially designed with one in the inside of feed bracket The counter-force that piston transmission comes can be applied to fixed feed shelter 11 by the individual shaft shoulder, swivel feeding disk 12 during axial movement, Fixed feed shelter 11 transmits the force to feed bracket, brake force then is passed into clamp by connecting bracket 9 by the shaft shoulder Body 1, is then passed to automobile chassis, so as to avoid power source 1 by excessive axial force.
The main reason for design thrust bearing 13,18 is that swivel feeding disk 12 also needs to revolve while piston 21 are ejected Turn, but the bay 15 being joined directly together with piston 21 can only carry out axial movement.Therefore, exist therebetween and slide, pass through Design thrust bearing 13,18, in the case where not influenceing motion and transmitting, sliding friction can be become and turn to rolling friction, reduced Frictional force, so as to reduce the burden of power source 1, while the life-span on contact surface can also be improved.

Claims (3)

1. a kind of line control brake system actuator, it is characterised in that including power source (1), the fixed support of power source first (2), One caliper body (3), the second caliper body (4), friction plate retainer (5), friction plate (6), the fixed support of power source second (7) cavity (8), connecting bracket (9), are fed, power source (1) is fixed by the fixed support of power source first (2), power source second Support (7) is connected on caliper body (3), and connected mode is bolt connection;First caliper body (3), the second caliper body (4) It is bolted together, feeding cavity (8) is connected to the first caliper body by two connecting brackets (9) being arranged symmetrically (3) on;In feeding cavity (8) built with spline housing (10), fixed feed shelter (11), swivel feeding disk (12), thrust bearing ball (13), the first sealing ring (14), bay (15), the second sealing ring (16), feeding ball (17), thrust bearing retainer (18), gear The rectangular spline of ring (19), spline housing (10) connection power source (1) involute spline output shaft and swivel feeding disk (12), it is fixed Feed shelter (11) is fixed on feeding cavity (8) inside by interference fit and stopper slot, and the side of fixed feed shelter (11) props up The inner side shaft shoulder of cavity (8) is fed, fixed feed shelter (11) is established with swivel feeding disk (12) to feed ball (17) as medium Mechanically connect;The primary side of baffle ring (19) is bay (15), connection bearing pin (20), piston (21), and bay (15) connects baffle ring (19) connected with piston (21), bay (15) with piston (21) by being connected bearing pin (20), piston (21) mounted in pairs and clamp On body (3), piston (21) outer wall coordinates with caliper body (3) inwall for gap.
2. line control brake system actuator according to claim 1, it is characterised in that fixed feed shelter (11) and turn round into It is machined with the feed slot that three pair cross-sections are shaped as circular arc above to disk (12), the feed slot of swivel feeding disk (12) is with fixing Feed slot to disk (11) is arranged symmetrically.
3. line control brake system actuator according to claim 1, it is characterised in that band on the outer surface of spline housing (10) There are a shaft shoulder and four grooves.
CN201710901273.7A 2017-09-28 2017-09-28 Line control brake system actuator Pending CN107745704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710901273.7A CN107745704A (en) 2017-09-28 2017-09-28 Line control brake system actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710901273.7A CN107745704A (en) 2017-09-28 2017-09-28 Line control brake system actuator

Publications (1)

Publication Number Publication Date
CN107745704A true CN107745704A (en) 2018-03-02

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ID=61254582

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710901273.7A Pending CN107745704A (en) 2017-09-28 2017-09-28 Line control brake system actuator

Country Status (1)

Country Link
CN (1) CN107745704A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102444681A (en) * 2010-09-30 2012-05-09 日立汽车系统株式会社 Thrust generating apparatus, disk brake and stabilizer
EP2687743A1 (en) * 2012-07-20 2014-01-22 Mando Corporation Caliper parking brake
CN103994165A (en) * 2014-03-08 2014-08-20 芜湖伯特利汽车安全系统有限公司 Calipers with parking function
CN104919216A (en) * 2012-12-18 2015-09-16 Ntn株式会社 Ball-ramp mechanism, linear motion actuator, and electric disc brake device
DE102015214547A1 (en) * 2014-07-31 2016-02-04 Hitachi Automotive Systems, Ltd. disc brake
CN106151326A (en) * 2015-05-12 2016-11-23 株式会社万都 Disk brake actuator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102444681A (en) * 2010-09-30 2012-05-09 日立汽车系统株式会社 Thrust generating apparatus, disk brake and stabilizer
EP2687743A1 (en) * 2012-07-20 2014-01-22 Mando Corporation Caliper parking brake
CN104919216A (en) * 2012-12-18 2015-09-16 Ntn株式会社 Ball-ramp mechanism, linear motion actuator, and electric disc brake device
CN103994165A (en) * 2014-03-08 2014-08-20 芜湖伯特利汽车安全系统有限公司 Calipers with parking function
DE102015214547A1 (en) * 2014-07-31 2016-02-04 Hitachi Automotive Systems, Ltd. disc brake
CN106151326A (en) * 2015-05-12 2016-11-23 株式会社万都 Disk brake actuator

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Application publication date: 20180302

RJ01 Rejection of invention patent application after publication